зеркало из https://github.com/mozilla/gecko-dev.git
5153 строки
187 KiB
C++
5153 строки
187 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Utilities for animation of computed style values */
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/RuleNodeCacheConditions.h"
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#include "mozilla/StyleAnimationValue.h"
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#include "mozilla/Tuple.h"
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#include "mozilla/UniquePtr.h"
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#include "nsStyleTransformMatrix.h"
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#include "nsAutoPtr.h"
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#include "nsCOMArray.h"
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#include "nsIStyleRule.h"
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#include "mozilla/css/StyleRule.h"
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#include "nsString.h"
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#include "nsStyleContext.h"
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#include "nsStyleSet.h"
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#include "nsComputedDOMStyle.h"
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#include "nsCSSParser.h"
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#include "nsCSSPseudoElements.h"
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#include "mozilla/css/Declaration.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/FloatingPoint.h"
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#include "mozilla/Likely.h"
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#include "mozilla/ServoBindings.h" // RawServoDeclarationBlock
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#include "gfxMatrix.h"
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#include "gfxQuaternion.h"
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#include "nsIDocument.h"
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#include "nsIFrame.h"
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#include "gfx2DGlue.h"
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using namespace mozilla;
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using namespace mozilla::css;
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using namespace mozilla::gfx;
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using nsStyleTransformMatrix::Decompose2DMatrix;
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using nsStyleTransformMatrix::Decompose3DMatrix;
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using nsStyleTransformMatrix::ShearType;
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// HELPER METHODS
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// --------------
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/*
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* Given two units, this method returns a common unit that they can both be
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* converted into, if possible. This is intended to facilitate
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* interpolation, distance-computation, and addition between "similar" units.
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*
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* The ordering of the arguments should not affect the output of this method.
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*
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* If there's no sensible common unit, this method returns eUnit_Null.
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*
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* @param aFirstUnit One unit to resolve.
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* @param aFirstUnit The other unit to resolve.
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* @return A "common" unit that both source units can be converted into, or
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* eUnit_Null if that's not possible.
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*/
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static
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StyleAnimationValue::Unit
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GetCommonUnit(nsCSSPropertyID aProperty,
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StyleAnimationValue::Unit aFirstUnit,
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StyleAnimationValue::Unit aSecondUnit)
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{
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if (aFirstUnit != aSecondUnit) {
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if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
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(aFirstUnit == StyleAnimationValue::eUnit_Coord ||
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aFirstUnit == StyleAnimationValue::eUnit_Percent ||
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aFirstUnit == StyleAnimationValue::eUnit_Calc) &&
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(aSecondUnit == StyleAnimationValue::eUnit_Coord ||
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aSecondUnit == StyleAnimationValue::eUnit_Percent ||
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aSecondUnit == StyleAnimationValue::eUnit_Calc)) {
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// We can use calc() as the common unit.
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return StyleAnimationValue::eUnit_Calc;
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}
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if ((aFirstUnit == StyleAnimationValue::eUnit_Color ||
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aFirstUnit == StyleAnimationValue::eUnit_CurrentColor ||
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aFirstUnit == StyleAnimationValue::eUnit_ComplexColor) &&
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(aSecondUnit == StyleAnimationValue::eUnit_Color ||
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aSecondUnit == StyleAnimationValue::eUnit_CurrentColor ||
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aSecondUnit == StyleAnimationValue::eUnit_ComplexColor)) {
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// We can use complex color as the common unit.
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return StyleAnimationValue::eUnit_ComplexColor;
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}
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return StyleAnimationValue::eUnit_Null;
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}
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return aFirstUnit;
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}
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static
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nsCSSUnit
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GetCommonUnit(nsCSSPropertyID aProperty,
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nsCSSUnit aFirstUnit,
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nsCSSUnit aSecondUnit)
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{
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if (aFirstUnit != aSecondUnit) {
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if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
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(aFirstUnit == eCSSUnit_Pixel ||
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aFirstUnit == eCSSUnit_Percent ||
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aFirstUnit == eCSSUnit_Calc) &&
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(aSecondUnit == eCSSUnit_Pixel ||
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aSecondUnit == eCSSUnit_Percent ||
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aSecondUnit == eCSSUnit_Calc)) {
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// We can use calc() as the common unit.
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return eCSSUnit_Calc;
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}
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return eCSSUnit_Null;
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}
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return aFirstUnit;
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}
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static nsCSSKeyword
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ToPrimitive(nsCSSKeyword aKeyword)
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{
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switch (aKeyword) {
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case eCSSKeyword_translatex:
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case eCSSKeyword_translatey:
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case eCSSKeyword_translatez:
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case eCSSKeyword_translate:
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return eCSSKeyword_translate3d;
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case eCSSKeyword_scalex:
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case eCSSKeyword_scaley:
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case eCSSKeyword_scalez:
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case eCSSKeyword_scale:
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return eCSSKeyword_scale3d;
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default:
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return aKeyword;
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}
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}
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static bool
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TransformFunctionsMatch(nsCSSKeyword func1, nsCSSKeyword func2)
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{
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// Handle eCSSKeyword_accumulatematrix as different function to be calculated
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// (decomposed and recomposed) them later.
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if (func1 == eCSSKeyword_accumulatematrix ||
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func2 == eCSSKeyword_accumulatematrix) {
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return false;
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}
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return ToPrimitive(func1) == ToPrimitive(func2);
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}
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static bool
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TransformFunctionListsMatch(const nsCSSValueList *list1,
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const nsCSSValueList *list2)
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{
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const nsCSSValueList *item1 = list1, *item2 = list2;
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do {
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nsCSSKeyword func1 = nsStyleTransformMatrix::TransformFunctionOf(
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item1->mValue.GetArrayValue());
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nsCSSKeyword func2 = nsStyleTransformMatrix::TransformFunctionOf(
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item2->mValue.GetArrayValue());
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if (!TransformFunctionsMatch(func1, func2)) {
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return false;
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}
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item1 = item1->mNext;
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item2 = item2->mNext;
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} while (item1 && item2);
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// Length match?
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return !item1 && !item2;
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}
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static already_AddRefed<nsCSSValue::Array>
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AppendFunction(nsCSSKeyword aTransformFunction)
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{
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uint32_t nargs;
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switch (aTransformFunction) {
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case eCSSKeyword_matrix3d:
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nargs = 16;
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break;
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case eCSSKeyword_matrix:
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nargs = 6;
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break;
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case eCSSKeyword_rotate3d:
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nargs = 4;
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break;
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case eCSSKeyword_interpolatematrix:
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case eCSSKeyword_accumulatematrix:
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case eCSSKeyword_translate3d:
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case eCSSKeyword_scale3d:
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nargs = 3;
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break;
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case eCSSKeyword_translate:
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case eCSSKeyword_skew:
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case eCSSKeyword_scale:
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nargs = 2;
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break;
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default:
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NS_ERROR("must be a transform function");
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MOZ_FALLTHROUGH;
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case eCSSKeyword_translatex:
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case eCSSKeyword_translatey:
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case eCSSKeyword_translatez:
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case eCSSKeyword_scalex:
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case eCSSKeyword_scaley:
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case eCSSKeyword_scalez:
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case eCSSKeyword_skewx:
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case eCSSKeyword_skewy:
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case eCSSKeyword_rotate:
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case eCSSKeyword_rotatex:
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case eCSSKeyword_rotatey:
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case eCSSKeyword_rotatez:
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case eCSSKeyword_perspective:
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nargs = 1;
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break;
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}
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RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(nargs + 1);
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arr->Item(0).SetIntValue(aTransformFunction, eCSSUnit_Enumerated);
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return arr.forget();
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}
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static already_AddRefed<nsCSSValue::Array>
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ToPrimitive(nsCSSValue::Array* aArray)
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{
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nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(aArray);
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nsCSSKeyword primitive = ToPrimitive(tfunc);
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RefPtr<nsCSSValue::Array> arr = AppendFunction(primitive);
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// FIXME: This would produce fewer calc() expressions if the
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// zero were of compatible type (length vs. percent) when
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// needed.
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nsCSSValue zero(0.0f, eCSSUnit_Pixel);
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nsCSSValue one(1.0f, eCSSUnit_Number);
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switch(tfunc) {
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case eCSSKeyword_translate:
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{
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MOZ_ASSERT(aArray->Count() == 2 || aArray->Count() == 3,
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"unexpected count");
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arr->Item(1) = aArray->Item(1);
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arr->Item(2) = aArray->Count() == 3 ? aArray->Item(2) : zero;
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arr->Item(3) = zero;
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break;
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}
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case eCSSKeyword_translatex:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = aArray->Item(1);
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arr->Item(2) = zero;
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arr->Item(3) = zero;
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break;
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}
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case eCSSKeyword_translatey:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = zero;
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arr->Item(2) = aArray->Item(1);
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arr->Item(3) = zero;
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break;
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}
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case eCSSKeyword_translatez:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = zero;
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arr->Item(2) = zero;
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arr->Item(3) = aArray->Item(1);
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break;
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}
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case eCSSKeyword_scale:
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{
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MOZ_ASSERT(aArray->Count() == 2 || aArray->Count() == 3,
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"unexpected count");
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arr->Item(1) = aArray->Item(1);
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arr->Item(2) = aArray->Count() == 3 ? aArray->Item(2) : aArray->Item(1);
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arr->Item(3) = one;
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break;
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}
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case eCSSKeyword_scalex:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = aArray->Item(1);
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arr->Item(2) = one;
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arr->Item(3) = one;
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break;
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}
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case eCSSKeyword_scaley:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = one;
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arr->Item(2) = aArray->Item(1);
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arr->Item(3) = one;
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break;
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}
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case eCSSKeyword_scalez:
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{
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MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
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arr->Item(1) = one;
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arr->Item(2) = one;
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arr->Item(3) = aArray->Item(1);
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break;
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}
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default:
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arr = aArray;
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}
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return arr.forget();
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}
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static void
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AppendCSSShadowValue(const nsCSSShadowItem *aShadow,
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nsCSSValueList **&aResultTail)
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{
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MOZ_ASSERT(aShadow, "shadow expected");
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// X, Y, Radius, Spread, Color, Inset
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RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(6);
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arr->Item(0).SetIntegerCoordValue(aShadow->mXOffset);
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arr->Item(1).SetIntegerCoordValue(aShadow->mYOffset);
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arr->Item(2).SetIntegerCoordValue(aShadow->mRadius);
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// NOTE: This code sometimes stores mSpread: 0 even when
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// the parser would be required to leave it null.
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arr->Item(3).SetIntegerCoordValue(aShadow->mSpread);
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if (aShadow->mHasColor) {
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arr->Item(4).SetColorValue(aShadow->mColor);
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}
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if (aShadow->mInset) {
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arr->Item(5).SetIntValue(uint8_t(StyleBoxShadowType::Inset),
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eCSSUnit_Enumerated);
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}
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nsCSSValueList *resultItem = new nsCSSValueList;
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resultItem->mValue.SetArrayValue(arr, eCSSUnit_Array);
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*aResultTail = resultItem;
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aResultTail = &resultItem->mNext;
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}
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// Like nsStyleCoord::CalcValue, but with length in float pixels instead
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// of nscoord.
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struct PixelCalcValue
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{
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float mLength, mPercent;
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bool mHasPercent;
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};
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// Requires a canonical calc() value that we generated.
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static PixelCalcValue
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ExtractCalcValueInternal(const nsCSSValue& aValue)
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{
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MOZ_ASSERT(aValue.GetUnit() == eCSSUnit_Calc, "unexpected unit");
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nsCSSValue::Array *arr = aValue.GetArrayValue();
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MOZ_ASSERT(arr->Count() == 1, "unexpected length");
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const nsCSSValue &topval = arr->Item(0);
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PixelCalcValue result;
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if (topval.GetUnit() == eCSSUnit_Pixel) {
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result.mLength = topval.GetFloatValue();
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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} else {
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MOZ_ASSERT(topval.GetUnit() == eCSSUnit_Calc_Plus,
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"unexpected unit");
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nsCSSValue::Array *arr2 = topval.GetArrayValue();
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const nsCSSValue &len = arr2->Item(0);
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const nsCSSValue &pct = arr2->Item(1);
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MOZ_ASSERT(len.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
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MOZ_ASSERT(pct.GetUnit() == eCSSUnit_Percent, "unexpected unit");
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result.mLength = len.GetFloatValue();
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result.mPercent = pct.GetPercentValue();
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result.mHasPercent = true;
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}
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return result;
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}
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// Requires a canonical calc() value that we generated.
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static PixelCalcValue
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ExtractCalcValue(const StyleAnimationValue& aValue)
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{
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PixelCalcValue result;
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if (aValue.GetUnit() == StyleAnimationValue::eUnit_Coord) {
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result.mLength =
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nsPresContext::AppUnitsToFloatCSSPixels(aValue.GetCoordValue());
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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return result;
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}
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if (aValue.GetUnit() == StyleAnimationValue::eUnit_Percent) {
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result.mLength = 0.0f;
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result.mPercent = aValue.GetPercentValue();
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result.mHasPercent = true;
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return result;
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}
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MOZ_ASSERT(aValue.GetUnit() == StyleAnimationValue::eUnit_Calc,
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"unexpected unit");
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nsCSSValue *val = aValue.GetCSSValueValue();
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return ExtractCalcValueInternal(*val);
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}
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static PixelCalcValue
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ExtractCalcValue(const nsCSSValue& aValue)
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{
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PixelCalcValue result;
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if (aValue.GetUnit() == eCSSUnit_Pixel) {
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result.mLength = aValue.GetFloatValue();
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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return result;
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}
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if (aValue.GetUnit() == eCSSUnit_Percent) {
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result.mLength = 0.0f;
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result.mPercent = aValue.GetPercentValue();
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result.mHasPercent = true;
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return result;
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}
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return ExtractCalcValueInternal(aValue);
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}
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static void
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CalcValueToCSSValue(const nsStyleCoord::CalcValue* aCalc, nsCSSValue& aValue)
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{
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aValue.SetCalcValue(aCalc);
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}
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static void
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CalcValueToCSSValue(const PixelCalcValue& aCalc, nsCSSValue& aValue)
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{
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RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(1);
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if (!aCalc.mHasPercent) {
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arr->Item(0).SetFloatValue(aCalc.mLength, eCSSUnit_Pixel);
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} else {
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nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
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arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
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arr2->Item(0).SetFloatValue(aCalc.mLength, eCSSUnit_Pixel);
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arr2->Item(1).SetPercentValue(aCalc.mPercent);
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}
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aValue.SetArrayValue(arr, eCSSUnit_Calc);
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}
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double
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CalcPositionSquareDistance(const nsCSSValue& aPos1,
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const nsCSSValue& aPos2)
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{
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NS_ASSERTION(aPos1.GetUnit() == eCSSUnit_Array &&
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aPos2.GetUnit() == eCSSUnit_Array,
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"Expected two arrays");
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PixelCalcValue calcVal[4];
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nsCSSValue::Array* posArray = aPos1.GetArrayValue();
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MOZ_ASSERT(posArray->Count() == 4, "Invalid position value");
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NS_ASSERTION(posArray->Item(0).GetUnit() == eCSSUnit_Null &&
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posArray->Item(2).GetUnit() == eCSSUnit_Null,
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"Invalid list used");
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for (int i = 0; i < 2; ++i) {
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MOZ_ASSERT(posArray->Item(i*2+1).GetUnit() != eCSSUnit_Null,
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"Invalid position value");
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calcVal[i] = ExtractCalcValue(posArray->Item(i*2+1));
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}
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posArray = aPos2.GetArrayValue();
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MOZ_ASSERT(posArray->Count() == 4, "Invalid position value");
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NS_ASSERTION(posArray->Item(0).GetUnit() == eCSSUnit_Null &&
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posArray->Item(2).GetUnit() == eCSSUnit_Null,
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"Invalid list used");
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for (int i = 0; i < 2; ++i) {
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MOZ_ASSERT(posArray->Item(i*2+1).GetUnit() != eCSSUnit_Null,
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"Invalid position value");
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calcVal[i+2] = ExtractCalcValue(posArray->Item(i*2+1));
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}
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double squareDistance = 0.0;
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for (int i = 0; i < 2; ++i) {
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float difflen = calcVal[i+2].mLength - calcVal[i].mLength;
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float diffpct = calcVal[i+2].mPercent - calcVal[i].mPercent;
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squareDistance += difflen * difflen + diffpct * diffpct;
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}
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return squareDistance;
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}
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static PixelCalcValue
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CalcBackgroundCoord(const nsCSSValue& aCoord)
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{
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NS_ASSERTION(aCoord.GetUnit() == eCSSUnit_Array,
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"Expected array");
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nsCSSValue::Array* array = aCoord.GetArrayValue();
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MOZ_ASSERT(array->Count() == 2 &&
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array->Item(0).GetUnit() == eCSSUnit_Null &&
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array->Item(1).GetUnit() != eCSSUnit_Null,
|
|
"Invalid position value");
|
|
return ExtractCalcValue(array->Item(1));
|
|
}
|
|
|
|
double
|
|
CalcPositionCoordSquareDistance(const nsCSSValue& aPos1,
|
|
const nsCSSValue& aPos2)
|
|
{
|
|
PixelCalcValue calcVal1 = CalcBackgroundCoord(aPos1);
|
|
PixelCalcValue calcVal2 = CalcBackgroundCoord(aPos2);
|
|
|
|
float difflen = calcVal2.mLength - calcVal1.mLength;
|
|
float diffpct = calcVal2.mPercent - calcVal1.mPercent;
|
|
return difflen * difflen + diffpct * diffpct;
|
|
}
|
|
|
|
// Ensure that a float/double value isn't NaN by returning zero instead
|
|
// (NaN doesn't have a sign) as a general restriction for floating point
|
|
// values in RestrictValue.
|
|
template<typename T>
|
|
MOZ_ALWAYS_INLINE T
|
|
EnsureNotNan(T aValue)
|
|
{
|
|
return aValue;
|
|
}
|
|
template<>
|
|
MOZ_ALWAYS_INLINE float
|
|
EnsureNotNan(float aValue)
|
|
{
|
|
// This would benefit from a MOZ_FLOAT_IS_NaN if we had one.
|
|
return MOZ_LIKELY(!mozilla::IsNaN(aValue)) ? aValue : 0;
|
|
}
|
|
template<>
|
|
MOZ_ALWAYS_INLINE double
|
|
EnsureNotNan(double aValue)
|
|
{
|
|
return MOZ_LIKELY(!mozilla::IsNaN(aValue)) ? aValue : 0;
|
|
}
|
|
|
|
template <typename T>
|
|
T
|
|
RestrictValue(uint32_t aRestrictions, T aValue)
|
|
{
|
|
T result = EnsureNotNan(aValue);
|
|
switch (aRestrictions) {
|
|
case 0:
|
|
break;
|
|
case CSS_PROPERTY_VALUE_NONNEGATIVE:
|
|
if (result < 0) {
|
|
result = 0;
|
|
}
|
|
break;
|
|
case CSS_PROPERTY_VALUE_AT_LEAST_ONE:
|
|
if (result < 1) {
|
|
result = 1;
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "bad value restriction");
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <typename T>
|
|
T
|
|
RestrictValue(nsCSSPropertyID aProperty, T aValue)
|
|
{
|
|
return RestrictValue(nsCSSProps::ValueRestrictions(aProperty), aValue);
|
|
}
|
|
|
|
static void
|
|
AddCSSValueAngle(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
if (aValue1.GetUnit() == aValue2.GetUnit()) {
|
|
// To avoid floating point error, if the units match, maintain the unit.
|
|
aResult.SetFloatValue(
|
|
EnsureNotNan(aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()),
|
|
aValue1.GetUnit());
|
|
} else {
|
|
aResult.SetFloatValue(
|
|
EnsureNotNan(aCoeff1 * aValue1.GetAngleValueInRadians() +
|
|
aCoeff2 * aValue2.GetAngleValueInRadians()),
|
|
eCSSUnit_Radian);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePercent(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
aResult.SetPercentValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetPercentValue() +
|
|
aCoeff2 * aValue2.GetPercentValue()));
|
|
}
|
|
|
|
// Add two canonical-form calc values (eUnit_Calc) to make another
|
|
// canonical-form calc value.
|
|
static void
|
|
AddCSSValueCanonicalCalc(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
PixelCalcValue v1 = ExtractCalcValue(aValue1);
|
|
PixelCalcValue v2 = ExtractCalcValue(aValue2);
|
|
PixelCalcValue result;
|
|
result.mLength = aCoeff1 * v1.mLength + aCoeff2 * v2.mLength;
|
|
result.mPercent = aCoeff1 * v1.mPercent + aCoeff2 * v2.mPercent;
|
|
result.mHasPercent = v1.mHasPercent || v2.mHasPercent;
|
|
MOZ_ASSERT(result.mHasPercent || result.mPercent == 0.0f,
|
|
"can't have a nonzero percentage part without having percentages");
|
|
CalcValueToCSSValue(result, aResult);
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePixel(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()),
|
|
eCSSUnit_Pixel);
|
|
}
|
|
|
|
static bool
|
|
AddCSSValuePixelPercentCalc(const uint32_t aValueRestrictions,
|
|
const nsCSSUnit aCommonUnit,
|
|
double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
switch (aCommonUnit) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult, aValueRestrictions);
|
|
break;
|
|
case eCSSUnit_Percent:
|
|
AddCSSValuePercent(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult, aValueRestrictions);
|
|
break;
|
|
case eCSSUnit_Calc:
|
|
AddCSSValueCanonicalCalc(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult);
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
AddTransformTranslate(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
// Only three possible units: eCSSUnit_Pixel, eCSSUnit_Percent, or
|
|
// eCSSUnit_Calc.
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Percent ||
|
|
aValue1.GetUnit() == eCSSUnit_Pixel ||
|
|
aValue1.IsCalcUnit(),
|
|
"unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Percent ||
|
|
aValue2.GetUnit() == eCSSUnit_Pixel ||
|
|
aValue2.IsCalcUnit(),
|
|
"unexpected unit");
|
|
AddCSSValuePixelPercentCalc(0,
|
|
(aValue1.GetUnit() != aValue2.GetUnit() ||
|
|
aValue1.IsCalcUnit())
|
|
? eCSSUnit_Calc
|
|
: aValue1.GetUnit(),
|
|
aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult);
|
|
}
|
|
|
|
// CLASS METHODS
|
|
// -------------
|
|
|
|
static RGBAColorData
|
|
ExtractColor(const nsCSSValue& aValue)
|
|
{
|
|
MOZ_ASSERT(aValue.IsNumericColorUnit(), "The unit should be color");
|
|
// PercentageRGBColor and PercentageRGBAColor component value might be
|
|
// greater than 1.0 in case when the color value is accumulated, so we
|
|
// can't use nsCSSValue::GetColorValue() here because that function
|
|
// clamps its values.
|
|
if (aValue.GetUnit() == eCSSUnit_PercentageRGBColor ||
|
|
aValue.GetUnit() == eCSSUnit_PercentageRGBAColor) {
|
|
nsCSSValueFloatColor* floatColor = aValue.GetFloatColorValue();
|
|
return {
|
|
floatColor->Comp1(),
|
|
floatColor->Comp2(),
|
|
floatColor->Comp3(),
|
|
floatColor->Alpha()
|
|
};
|
|
}
|
|
return RGBAColorData(aValue.GetColorValue());
|
|
}
|
|
|
|
static RGBAColorData
|
|
ExtractColor(const StyleAnimationValue& aValue)
|
|
{
|
|
MOZ_ASSERT(aValue.GetUnit() == StyleAnimationValue::eUnit_Color);
|
|
nsCSSValue* value = aValue.GetCSSValueValue();
|
|
MOZ_ASSERT(value, "CSS value must be valid");
|
|
return ExtractColor(*value);
|
|
}
|
|
|
|
static ComplexColorData
|
|
ExtractComplexColor(const StyleAnimationValue& aValue)
|
|
{
|
|
switch (aValue.GetUnit()) {
|
|
case StyleAnimationValue::eUnit_Color:
|
|
return ComplexColorData(ExtractColor(aValue), 0.0f);
|
|
case StyleAnimationValue::eUnit_CurrentColor:
|
|
return ComplexColorData({0, 0, 0, 0}, 1.0f);
|
|
case StyleAnimationValue::eUnit_ComplexColor:
|
|
return ComplexColorData(aValue.GetComplexColorData());
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown unit");
|
|
return ComplexColorData({0, 0, 0, 0}, 0.0f);
|
|
}
|
|
}
|
|
|
|
double
|
|
StyleAnimationValue::ComputeColorDistance(const RGBAColorData& aStartColor,
|
|
const RGBAColorData& aEndColor)
|
|
{
|
|
// http://www.w3.org/TR/smil-animation/#animateColorElement says
|
|
// that we should use Euclidean RGB cube distance. However, we
|
|
// have to extend that to RGBA. For now, we'll just use the
|
|
// Euclidean distance in the (part of the) 4-cube of premultiplied
|
|
// colors.
|
|
double startA = aStartColor.mA;
|
|
double startR = aStartColor.mR * startA;
|
|
double startG = aStartColor.mG * startA;
|
|
double startB = aStartColor.mB * startA;
|
|
double endA = aEndColor.mA;
|
|
double endR = aEndColor.mR * endA;
|
|
double endG = aEndColor.mG * endA;
|
|
double endB = aEndColor.mB * endA;
|
|
|
|
double diffA = startA - endA;
|
|
double diffR = startR - endR;
|
|
double diffG = startG - endG;
|
|
double diffB = startB - endB;
|
|
return sqrt(diffA * diffA + diffR * diffR + diffG * diffG + diffB * diffB);
|
|
}
|
|
|
|
enum class ColorAdditionType {
|
|
Clamped, // Clamp each color channel after adding.
|
|
Unclamped // Do not clamp color channels after adding.
|
|
};
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedFilterFunction(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
ColorAdditionType aColorAdditionType);
|
|
|
|
static inline float
|
|
GetNumberOrPercent(const nsCSSValue &aValue);
|
|
|
|
static bool
|
|
ComputeSingleShadowSquareDistance(const nsCSSValueList* aShadow1,
|
|
const nsCSSValueList* aShadow2,
|
|
double& aSquareDistance)
|
|
{
|
|
MOZ_ASSERT(aShadow1->mValue.GetUnit() == eCSSUnit_Array, "wrong unit");
|
|
MOZ_ASSERT(aShadow2->mValue.GetUnit() == eCSSUnit_Array, "wrong unit");
|
|
const nsCSSValue::Array* array1 = aShadow1->mValue.GetArrayValue();
|
|
const nsCSSValue::Array* array2 = aShadow2->mValue.GetArrayValue();
|
|
|
|
double squareDistance = 0.0;
|
|
// X, Y, Radius, Spread
|
|
for (size_t i = 0; i < 4; ++i) {
|
|
MOZ_ASSERT(array1->Item(i).GetUnit() == eCSSUnit_Pixel,
|
|
"unexpected unit");
|
|
MOZ_ASSERT(array2->Item(i).GetUnit() == eCSSUnit_Pixel,
|
|
"unexpected unit");
|
|
double diff = array1->Item(i).GetFloatValue() -
|
|
array2->Item(i).GetFloatValue();
|
|
squareDistance += diff * diff;
|
|
}
|
|
|
|
// Color, Inset
|
|
const nsCSSValue& color1 = array1->Item(4);
|
|
const nsCSSValue& color2 = array2->Item(4);
|
|
const nsCSSValue& inset1 = array1->Item(5);
|
|
const nsCSSValue& inset2 = array2->Item(5);
|
|
if ((color1.GetUnit() != color2.GetUnit() &&
|
|
(!color1.IsNumericColorUnit() ||
|
|
!color2.IsNumericColorUnit())) ||
|
|
inset1 != inset2) {
|
|
// According to AddWeightedShadowItems, we don't know how to animate
|
|
// between color and no-color, or between inset and not-inset,
|
|
// so we cannot compute the distance either.
|
|
// Note: There are only two possible states of the inset value:
|
|
// (1) GetUnit() == eCSSUnit_Null
|
|
// (2) GetUnit() == eCSSUnit_Enumerated &&
|
|
// GetIntValue() == NS_STYLE_BOX_SHADOW_INSET
|
|
return false;
|
|
}
|
|
|
|
// We compute the distance of colors only if both are numeric color units.
|
|
if (color1.GetUnit() != eCSSUnit_Null) {
|
|
double colorDistance =
|
|
StyleAnimationValue::ComputeColorDistance(ExtractColor(color1),
|
|
ExtractColor(color2));
|
|
squareDistance += colorDistance * colorDistance;
|
|
}
|
|
|
|
aSquareDistance = squareDistance;
|
|
return true;
|
|
}
|
|
|
|
// Return false if we cannot compute the distance between these filter
|
|
// functions.
|
|
static bool
|
|
ComputeFilterSquareDistance(const nsCSSValueList* aList1,
|
|
const nsCSSValueList* aList2,
|
|
double& aSquareDistance)
|
|
{
|
|
MOZ_ASSERT(aList1, "expected filter list");
|
|
MOZ_ASSERT(aList2, "expected filter list");
|
|
MOZ_ASSERT(aList1->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
MOZ_ASSERT(aList2->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
|
|
RefPtr<nsCSSValue::Array> a1 = aList1->mValue.GetArrayValue();
|
|
RefPtr<nsCSSValue::Array> a2 = aList2->mValue.GetArrayValue();
|
|
nsCSSKeyword filterFunction = a1->Item(0).GetKeywordValue();
|
|
if (filterFunction != a2->Item(0).GetKeywordValue()) {
|
|
return false;
|
|
}
|
|
|
|
const nsCSSValue& func1 = a1->Item(1);
|
|
const nsCSSValue& func2 = a2->Item(1);
|
|
switch (filterFunction) {
|
|
case eCSSKeyword_blur: {
|
|
nsCSSValue diff;
|
|
// In AddWeightedFilterFunctionImpl, blur may have different units, so we
|
|
// use eCSSUnit_Calc for that case.
|
|
if (!AddCSSValuePixelPercentCalc(0,
|
|
func1.GetUnit() == func2.GetUnit()
|
|
? func1.GetUnit()
|
|
: eCSSUnit_Calc,
|
|
1.0, func2,
|
|
-1.0, func1,
|
|
diff)) {
|
|
return false;
|
|
}
|
|
// ExtractCalcValue makes sure mHasPercent and mPercent are correct.
|
|
PixelCalcValue v = ExtractCalcValue(diff);
|
|
aSquareDistance = v.mLength * v.mLength + v.mPercent * v.mPercent;
|
|
break;
|
|
}
|
|
case eCSSKeyword_grayscale:
|
|
case eCSSKeyword_invert:
|
|
case eCSSKeyword_sepia:
|
|
case eCSSKeyword_brightness:
|
|
case eCSSKeyword_contrast:
|
|
case eCSSKeyword_opacity:
|
|
case eCSSKeyword_saturate: {
|
|
double diff =
|
|
EnsureNotNan(GetNumberOrPercent(func2) - GetNumberOrPercent(func1));
|
|
aSquareDistance = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSKeyword_hue_rotate: {
|
|
nsCSSValue v;
|
|
AddCSSValueAngle(1.0, func2, -1.0, func1, v);
|
|
double diff = v.GetAngleValueInRadians();
|
|
aSquareDistance = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSKeyword_drop_shadow: {
|
|
MOZ_ASSERT(!func1.GetListValue()->mNext && !func2.GetListValue()->mNext,
|
|
"drop-shadow filter func doesn't support lists");
|
|
if (!ComputeSingleShadowSquareDistance(func1.GetListValue(),
|
|
func2.GetListValue(),
|
|
aSquareDistance)) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("unknown filter function");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
ComputeFilterListDistance(const nsCSSValueList* aList1,
|
|
const nsCSSValueList* aList2,
|
|
double& aDistance)
|
|
{
|
|
double squareDistance = 0.0;
|
|
while (aList1 || aList2) {
|
|
// Return false if one of the lists is neither none nor a function.
|
|
if ((aList1 && aList1->mValue.GetUnit() != eCSSUnit_Function) ||
|
|
(aList2 && aList2->mValue.GetUnit() != eCSSUnit_Function)) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(aList1 || aList2, "one function list item must not be null");
|
|
|
|
double currentSquareDistance = 0.0;
|
|
if (!aList1) {
|
|
// This is a tricky to get an equivalent none filter function by 0.0
|
|
// coefficients. Although we don't guarantee this function can get the
|
|
// correct default values, it can reuse the code from the interpolation.
|
|
UniquePtr<nsCSSValueList> none =
|
|
AddWeightedFilterFunction(0, aList2, 0, aList2,
|
|
ColorAdditionType::Clamped);
|
|
if (!ComputeFilterSquareDistance(none.get(), aList2,
|
|
currentSquareDistance)) {
|
|
return false;
|
|
}
|
|
aList2 = aList2->mNext;
|
|
} else if (!aList2) {
|
|
UniquePtr<nsCSSValueList> none =
|
|
AddWeightedFilterFunction(0, aList1, 0, aList1,
|
|
ColorAdditionType::Clamped);
|
|
if (!ComputeFilterSquareDistance(aList1, none.get(),
|
|
currentSquareDistance)) {
|
|
return false;
|
|
}
|
|
aList1 = aList1->mNext;
|
|
} else {
|
|
if (!ComputeFilterSquareDistance(aList1, aList2,
|
|
currentSquareDistance)) {
|
|
return false;
|
|
}
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
}
|
|
squareDistance += currentSquareDistance;
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
|
|
enum class Restrictions {
|
|
Enable,
|
|
Disable
|
|
};
|
|
|
|
static already_AddRefed<nsCSSValue::Array>
|
|
AddShapeFunction(nsCSSPropertyID aProperty,
|
|
double aCoeff1, const nsCSSValue::Array* aArray1,
|
|
double aCoeff2, const nsCSSValue::Array* aArray2,
|
|
Restrictions aRestriction = Restrictions::Enable);
|
|
|
|
static bool
|
|
ComputeShapeDistance(nsCSSPropertyID aProperty,
|
|
const nsCSSValue::Array* aArray1,
|
|
const nsCSSValue::Array* aArray2,
|
|
double& aDistance)
|
|
{
|
|
// Use AddShapeFunction to get the difference between two shape functions.
|
|
RefPtr<nsCSSValue::Array> diffShape =
|
|
AddShapeFunction(aProperty, 1.0, aArray2, -1.0, aArray1,
|
|
Restrictions::Disable);
|
|
if (!diffShape) {
|
|
return false;
|
|
}
|
|
|
|
// A helper function to convert a calc() diff value into a double distance.
|
|
auto pixelCalcDistance = [](const PixelCalcValue& aValue) {
|
|
MOZ_ASSERT(aValue.mHasPercent || aValue.mPercent == 0.0f,
|
|
"can't have a nonzero percentage part without having percentages");
|
|
return aValue.mLength * aValue.mLength + aValue.mPercent * aValue.mPercent;
|
|
};
|
|
|
|
double squareDistance = 0.0;
|
|
const nsCSSValue::Array* func = diffShape->Item(0).GetArrayValue();
|
|
nsCSSKeyword shapeFuncName = func->Item(0).GetKeywordValue();
|
|
switch (shapeFuncName) {
|
|
case eCSSKeyword_ellipse:
|
|
case eCSSKeyword_circle: {
|
|
// Skip the first element which is the function keyword.
|
|
// Also, skip the last element which is an array for <position>
|
|
const size_t len = func->Count();
|
|
for (size_t i = 1; i < len - 1; ++i) {
|
|
squareDistance += pixelCalcDistance(ExtractCalcValue(func->Item(i)));
|
|
}
|
|
// Only iterate over elements 1 and 3. The <position> is 'uncomputed' to
|
|
// only those elements. See also the comment in SetPositionValue.
|
|
for (size_t i = 1; i < 4; i += 2) {
|
|
const nsCSSValue& value = func->Item(len - 1).GetArrayValue()->Item(i);
|
|
squareDistance += pixelCalcDistance(ExtractCalcValue(value));
|
|
}
|
|
break;
|
|
}
|
|
case eCSSKeyword_polygon: {
|
|
// Don't care about the first element which is the function keyword, and
|
|
// the second element which is the fill rule.
|
|
const nsCSSValuePairList* list = func->Item(2).GetPairListValue();
|
|
do {
|
|
squareDistance += pixelCalcDistance(ExtractCalcValue(list->mXValue)) +
|
|
pixelCalcDistance(ExtractCalcValue(list->mYValue));
|
|
list = list->mNext;
|
|
} while (list);
|
|
break;
|
|
}
|
|
case eCSSKeyword_inset: {
|
|
// Items 1-4 are respectively the top, right, bottom and left offsets
|
|
// from the reference box.
|
|
for (size_t i = 1; i <= 4; ++i) {
|
|
const nsCSSValue& value = func->Item(i);
|
|
squareDistance += pixelCalcDistance(ExtractCalcValue(value));
|
|
}
|
|
// Item 5 contains the radii of the rounded corners for the inset
|
|
// rectangle.
|
|
const nsCSSValue::Array* array = func->Item(5).GetArrayValue();
|
|
const size_t len = array->Count();
|
|
for (size_t i = 0; i < len; ++i) {
|
|
const nsCSSValuePair& pair = array->Item(i).GetPairValue();
|
|
squareDistance += pixelCalcDistance(ExtractCalcValue(pair.mXValue)) +
|
|
pixelCalcDistance(ExtractCalcValue(pair.mYValue));
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown shape type");
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddTransformLists(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
nsCSSKeyword aOperatorType = eCSSKeyword_interpolatematrix);
|
|
|
|
static double
|
|
ComputeTransform2DMatrixDistance(const Matrix& aMatrix1,
|
|
const Matrix& aMatrix2)
|
|
{
|
|
Point3D scale1(1, 1, 1);
|
|
Point3D translate1;
|
|
gfxQuaternion rotate1;
|
|
nsStyleTransformMatrix::ShearArray shear1{0.0f, 0.0f, 0.0f};
|
|
Decompose2DMatrix(aMatrix1, scale1, shear1, rotate1, translate1);
|
|
|
|
Point3D scale2(1, 1, 1);
|
|
Point3D translate2;
|
|
gfxQuaternion rotate2;
|
|
nsStyleTransformMatrix::ShearArray shear2{0.0f, 0.0f, 0.0f};
|
|
Decompose2DMatrix(aMatrix2, scale2, shear2, rotate2, translate2);
|
|
|
|
// Note:
|
|
// 1. Shear factor is the tangent value of shear angle, so we need to
|
|
// call atan() to get the angle. For 2D transform, we only have XYSHEAR.
|
|
// 2. The quaternion vector of the decomposed 2d matrix is got by
|
|
// "gfxQuaternion(0, 0, sin(rotate/2), cos(rotate/2))"
|
|
// ^^^^^^^^^^^^^ ^^^^^^^^^^^^^
|
|
// z w
|
|
// Therefore, we can get the rotate angle by 2 * atan2f(z, w).
|
|
//
|
|
// However, we can also get the rotate angle by the inner product of
|
|
// two quaternion vectors, just as what we do for eCSSKeyword_rotate3d.
|
|
// e.g.
|
|
// rotate3d(0, 0, 1, 60deg) => rotate3d(0, 0, 1, 120deg);
|
|
// quaternion 1: (0, 0, sin(30deg), cos(30deg)) = (0, 0, 1/2, sqrt(3)/2)
|
|
// quaternion 2: (0, 0, sin(60deg), cos(60deg)) = (0, 0, sqrt(3)/2, 1/2)
|
|
// inner product: sqrt(3)/4 + sqrt(3)/4 = sqrt(3)/2
|
|
// Finally, the rotate angle: 2 * acos(sqrt(3)/2) = 60deg
|
|
//
|
|
// I think doing atan() may be faster than doing inner product together
|
|
// with acos(), so let's adopt atan2f().
|
|
const Point3D diffTranslate = translate2 - translate1;
|
|
const Point3D diffScale = scale2 - scale1;
|
|
const double diffShear = atan(shear2[ShearType::XYSHEAR]) -
|
|
atan(shear1[ShearType::XYSHEAR]);
|
|
const double diffRotate = 2.0 * (atan2f(rotate2.z, rotate2.w) -
|
|
atan2f(rotate1.z, rotate1.w));
|
|
// Returns the sum of squares because we will take a square root in
|
|
// ComputeTransformListDistance.
|
|
return diffTranslate.DotProduct(diffTranslate) +
|
|
diffScale.DotProduct(diffScale) +
|
|
diffRotate * diffRotate +
|
|
diffShear * diffShear;
|
|
}
|
|
|
|
static double
|
|
ComputeTransform3DMatrixDistance(const Matrix4x4& aMatrix1,
|
|
const Matrix4x4& aMatrix2)
|
|
{
|
|
Point3D scale1(1, 1, 1);
|
|
Point3D translate1;
|
|
Point4D perspective1(0, 0, 0, 1);
|
|
gfxQuaternion rotate1;
|
|
nsStyleTransformMatrix::ShearArray shear1{0.0f, 0.0f, 0.0f};
|
|
Decompose3DMatrix(aMatrix1, scale1, shear1, rotate1, translate1,
|
|
perspective1);
|
|
|
|
Point3D scale2(1, 1, 1);
|
|
Point3D translate2;
|
|
Point4D perspective2(0, 0, 0, 1);
|
|
gfxQuaternion rotate2;
|
|
nsStyleTransformMatrix::ShearArray shear2{0.0f, 0.0f, 0.0f};
|
|
Decompose3DMatrix(aMatrix2, scale2, shear2, rotate2, translate2,
|
|
perspective2);
|
|
|
|
// Note:
|
|
// 1. Shear factor is the tangent value of shear angle, so we need to
|
|
// call atan() to get the angle.
|
|
// 2. We use the same way to get the rotate angle of two quaternion vectors as
|
|
// what we do for rotate3d.
|
|
const Point3D diffTranslate = translate2 - translate1;
|
|
const Point3D diffScale = scale2 - scale1;
|
|
const Point3D diffShear(atan(shear2[ShearType::XYSHEAR]) -
|
|
atan(shear1[ShearType::XYSHEAR]),
|
|
atan(shear2[ShearType::XZSHEAR]) -
|
|
atan(shear1[ShearType::XZSHEAR]),
|
|
atan(shear2[ShearType::YZSHEAR]) -
|
|
atan(shear1[ShearType::YZSHEAR]));
|
|
const Point4D diffPerspective = perspective2 - perspective1;
|
|
const double dot = clamped(rotate1.DotProduct(rotate2), -1.0, 1.0);
|
|
const double diffRotate = 2.0 * acos(dot);
|
|
// Returns the sum of squares because we will take a square root in
|
|
// ComputeTransformListDistance.
|
|
return diffTranslate.DotProduct(diffTranslate) +
|
|
diffScale.DotProduct(diffScale) +
|
|
diffPerspective.DotProduct(diffPerspective) +
|
|
diffShear.DotProduct(diffShear) +
|
|
diffRotate * diffRotate;
|
|
}
|
|
|
|
static double
|
|
ComputeTransformDistance(nsCSSValue::Array* aArray1,
|
|
nsCSSValue::Array* aArray2)
|
|
{
|
|
MOZ_ASSERT(aArray1, "aArray1 should be non-null.");
|
|
MOZ_ASSERT(aArray2, "aArray2 should be non-null.");
|
|
|
|
// Normalize translate and scale functions to equivalent "translate3d" and
|
|
// "scale3d" functions.
|
|
RefPtr<nsCSSValue::Array> a1 = ToPrimitive(aArray1),
|
|
a2 = ToPrimitive(aArray2);
|
|
nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(a1);
|
|
MOZ_ASSERT(nsStyleTransformMatrix::TransformFunctionOf(a2) == tfunc);
|
|
|
|
double distance = 0.0;
|
|
switch (tfunc) {
|
|
case eCSSKeyword_translate3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
|
|
nsCSSValue x, y, z;
|
|
AddTransformTranslate(1.0, a2->Item(1), -1.0, a1->Item(1), x);
|
|
AddTransformTranslate(1.0, a2->Item(2), -1.0, a1->Item(2), y);
|
|
AddTransformTranslate(1.0, a2->Item(3), -1.0, a1->Item(3), z);
|
|
// Drop percent part because we only compute distance by computed values.
|
|
double c1 = ExtractCalcValue(x).mLength;
|
|
double c2 = ExtractCalcValue(y).mLength;
|
|
double c3 = z.GetFloatValue();
|
|
distance = c1 * c1 + c2 * c2 + c3 * c3;
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
|
|
auto ComputeScaleDiff = [](const nsCSSValue& aValue1,
|
|
const nsCSSValue& aValue2) {
|
|
float v1 = aValue1.GetFloatValue();
|
|
float v2 = aValue2.GetFloatValue();
|
|
return EnsureNotNan(v2 - v1);
|
|
};
|
|
|
|
double c1 = ComputeScaleDiff(a1->Item(1), a2->Item(1));
|
|
double c2 = ComputeScaleDiff(a1->Item(2), a2->Item(2));
|
|
double c3 = ComputeScaleDiff(a1->Item(3), a2->Item(3));
|
|
distance = c1 * c1 + c2 * c2 + c3 * c3;
|
|
break;
|
|
}
|
|
case eCSSKeyword_skew: {
|
|
MOZ_ASSERT(a1->Count() == 2 || a1->Count() == 3, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2 || a2->Count() == 3, "unexpected count");
|
|
|
|
const nsCSSValue zero(0.0f, eCSSUnit_Radian);
|
|
nsCSSValue x, y;
|
|
AddCSSValueAngle(1.0, a2->Item(1), -1.0, a1->Item(1), x);
|
|
AddCSSValueAngle(1.0, a2->Count() == 3 ? a2->Item(2) : zero,
|
|
-1.0, a1->Count() == 3 ? a1->Item(2) : zero,
|
|
y);
|
|
distance = x.GetAngleValueInRadians() * x.GetAngleValueInRadians() +
|
|
y.GetAngleValueInRadians() * y.GetAngleValueInRadians();
|
|
break;
|
|
}
|
|
case eCSSKeyword_skewx:
|
|
case eCSSKeyword_skewy:
|
|
case eCSSKeyword_rotate:
|
|
case eCSSKeyword_rotatex:
|
|
case eCSSKeyword_rotatey:
|
|
case eCSSKeyword_rotatez: {
|
|
MOZ_ASSERT(a1->Count() == 2, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2, "unexpected count");
|
|
|
|
nsCSSValue angle;
|
|
AddCSSValueAngle(1.0, a2->Item(1), -1.0, a1->Item(1), angle);
|
|
distance = angle.GetAngleValueInRadians() *
|
|
angle.GetAngleValueInRadians();
|
|
break;
|
|
}
|
|
case eCSSKeyword_rotate3d: {
|
|
MOZ_ASSERT(a1->Count() == 5, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 5, "unexpected count");
|
|
|
|
Point3D vector1(a1->Item(1).GetFloatValue(),
|
|
a1->Item(2).GetFloatValue(),
|
|
a1->Item(3).GetFloatValue());
|
|
vector1.Normalize();
|
|
Point3D vector2(a2->Item(1).GetFloatValue(),
|
|
a2->Item(2).GetFloatValue(),
|
|
a2->Item(3).GetFloatValue());
|
|
vector2.Normalize();
|
|
|
|
if (vector1 == vector2) {
|
|
// Handle rotate3d with matched (normalized) vectors.
|
|
nsCSSValue angle;
|
|
AddCSSValueAngle(1.0, a2->Item(4), -1.0, a1->Item(4), angle);
|
|
distance = angle.GetAngleValueInRadians() *
|
|
angle.GetAngleValueInRadians();
|
|
} else {
|
|
// Use quaternion vectors to get the angle difference. Both q1 and q2
|
|
// are unit vectors, so we can get their angle difference by
|
|
// cos(theta/2) = (q1 dot q2) / (|q1| * |q2|) = q1 dot q2.
|
|
gfxQuaternion q1(vector1, a1->Item(4).GetAngleValueInRadians());
|
|
gfxQuaternion q2(vector2, a2->Item(4).GetAngleValueInRadians());
|
|
distance = 2.0 * acos(clamped(q1.DotProduct(q2), -1.0, 1.0));
|
|
distance = distance * distance;
|
|
}
|
|
break;
|
|
}
|
|
case eCSSKeyword_perspective: {
|
|
MOZ_ASSERT(a1->Count() == 2, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2, "unexpected count");
|
|
|
|
// We convert a perspective function into an equivalent matrix3d, and
|
|
// then do matrix decomposition to get the distance.
|
|
// Why don't we just subtract one perspective depth from the other?
|
|
// I think it's better to follow the logic of our interpolation,
|
|
// which does linear interpolation between two decomposed perspective
|
|
// vectors.
|
|
// e.g.
|
|
// Do interpolation between perspective(100px) and perspective(1000px).
|
|
// 1) Convert them into matrix3d, and then do matrix decomposition:
|
|
// perspective vector 1: perspective(0, 0, -1/100, 1);
|
|
// perspective vector 2: perspective(0, 0, -1/1000, 1);
|
|
// 2) Do linear interpolation between these two vectors.
|
|
// Therefore, we use the same rule to get the distance as what we do for
|
|
// matrix3d.
|
|
|
|
auto clampPerspectiveDepth = [](float aDepth) {
|
|
// Perspective depth should be positive non-zero value.
|
|
return std::max(aDepth, std::numeric_limits<float>::epsilon());
|
|
};
|
|
Matrix4x4 m1;
|
|
m1.Perspective(clampPerspectiveDepth(a1->Item(1).GetFloatValue()));
|
|
Matrix4x4 m2;
|
|
m2.Perspective(clampPerspectiveDepth(a2->Item(1).GetFloatValue()));
|
|
|
|
distance = ComputeTransform3DMatrixDistance(m1, m2);
|
|
break;
|
|
}
|
|
case eCSSKeyword_matrix: {
|
|
MOZ_ASSERT(a1->Count() == 7, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 7, "unexpected count");
|
|
|
|
distance = ComputeTransform2DMatrixDistance(
|
|
nsStyleTransformMatrix::CSSValueArrayTo2DMatrix(a1),
|
|
nsStyleTransformMatrix::CSSValueArrayTo2DMatrix(a2));
|
|
break;
|
|
}
|
|
case eCSSKeyword_matrix3d: {
|
|
MOZ_ASSERT(a1->Count() == 17, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 17, "unexpected count");
|
|
|
|
distance = ComputeTransform3DMatrixDistance(
|
|
nsStyleTransformMatrix::CSSValueArrayTo3DMatrix(a1),
|
|
nsStyleTransformMatrix::CSSValueArrayTo3DMatrix(a2));
|
|
break;
|
|
}
|
|
case eCSSKeyword_interpolatematrix:
|
|
case eCSSKeyword_accumulatematrix:
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unsupported transform function");
|
|
break;
|
|
}
|
|
return distance;
|
|
}
|
|
|
|
static double
|
|
ComputeTransformListDistance(const nsCSSValueList* aList1,
|
|
const nsCSSValueList* aList2)
|
|
{
|
|
MOZ_ASSERT(aList1, "aList1 should be non-null.");
|
|
MOZ_ASSERT(aList2, "aList2 should be non-null.");
|
|
|
|
double distance = 0.0;
|
|
do {
|
|
distance += ComputeTransformDistance(aList1->mValue.GetArrayValue(),
|
|
aList2->mValue.GetArrayValue());
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
MOZ_ASSERT(!aList1 == !aList2,
|
|
"aList1 and aList2 should have the same length.");
|
|
} while (aList1);
|
|
return sqrt(distance);
|
|
}
|
|
|
|
static double
|
|
ComputeMismatchedTransfromListDistance(const nsCSSValueList* aList1,
|
|
const nsCSSValueList* aList2,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
// We need nsStyleContext and nsPresContext to compute calc() values while
|
|
// processing the translate part of transforms.
|
|
if (!aStyleContext) {
|
|
return 0.0;
|
|
}
|
|
|
|
RuleNodeCacheConditions dontCare;
|
|
bool dontCareBool;
|
|
nsStyleTransformMatrix::TransformReferenceBox emptyRefBox;
|
|
|
|
Matrix4x4 m1 = nsStyleTransformMatrix::ReadTransforms(
|
|
aList1,
|
|
aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
dontCare,
|
|
emptyRefBox,
|
|
nsPresContext::AppUnitsPerCSSPixel(),
|
|
&dontCareBool);
|
|
Matrix4x4 m2 = nsStyleTransformMatrix::ReadTransforms(
|
|
aList2,
|
|
aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
dontCare,
|
|
emptyRefBox,
|
|
nsPresContext::AppUnitsPerCSSPixel(),
|
|
&dontCareBool);
|
|
return sqrt(ComputeTransform3DMatrixDistance(m1, m2));
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::ComputeDistance(nsCSSPropertyID aProperty,
|
|
const StyleAnimationValue& aStartValue,
|
|
const StyleAnimationValue& aEndValue,
|
|
nsStyleContext* aStyleContext,
|
|
double& aDistance)
|
|
{
|
|
Unit commonUnit =
|
|
GetCommonUnit(aProperty, aStartValue.GetUnit(), aEndValue.GetUnit());
|
|
|
|
switch (commonUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_Normal:
|
|
case eUnit_UnparsedString:
|
|
case eUnit_URL:
|
|
case eUnit_DiscreteCSSValue:
|
|
return false;
|
|
|
|
case eUnit_Enumerated:
|
|
switch (aProperty) {
|
|
case eCSSProperty_font_stretch: {
|
|
// just like eUnit_Integer.
|
|
int32_t startInt = aStartValue.GetIntValue();
|
|
int32_t endInt = aEndValue.GetIntValue();
|
|
aDistance = Abs(endInt - startInt);
|
|
return true;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
case eUnit_Visibility: {
|
|
int32_t startEnum = aStartValue.GetIntValue();
|
|
int32_t endEnum = aEndValue.GetIntValue();
|
|
if (startEnum == endEnum) {
|
|
aDistance = 0;
|
|
return true;
|
|
}
|
|
if ((startEnum == NS_STYLE_VISIBILITY_VISIBLE) ==
|
|
(endEnum == NS_STYLE_VISIBILITY_VISIBLE)) {
|
|
return false;
|
|
}
|
|
aDistance = 1;
|
|
return true;
|
|
}
|
|
case eUnit_Integer: {
|
|
int32_t startInt = aStartValue.GetIntValue();
|
|
int32_t endInt = aEndValue.GetIntValue();
|
|
aDistance = Abs(double(endInt) - double(startInt));
|
|
return true;
|
|
}
|
|
case eUnit_Coord: {
|
|
nscoord startCoord = aStartValue.GetCoordValue();
|
|
nscoord endCoord = aEndValue.GetCoordValue();
|
|
aDistance = Abs(double(endCoord) - double(startCoord));
|
|
return true;
|
|
}
|
|
case eUnit_Percent: {
|
|
float startPct = aStartValue.GetPercentValue();
|
|
float endPct = aEndValue.GetPercentValue();
|
|
aDistance = Abs(double(endPct) - double(startPct));
|
|
return true;
|
|
}
|
|
case eUnit_Float: {
|
|
float startFloat = aStartValue.GetFloatValue();
|
|
float endFloat = aEndValue.GetFloatValue();
|
|
aDistance = Abs(double(endFloat) - double(startFloat));
|
|
return true;
|
|
}
|
|
case eUnit_Color: {
|
|
aDistance = ComputeColorDistance(ExtractColor(aStartValue),
|
|
ExtractColor(aEndValue));
|
|
return true;
|
|
}
|
|
case eUnit_CurrentColor: {
|
|
aDistance = 0;
|
|
return true;
|
|
}
|
|
case eUnit_ComplexColor: {
|
|
ComplexColorData color1 = ExtractComplexColor(aStartValue);
|
|
ComplexColorData color2 = ExtractComplexColor(aEndValue);
|
|
// Common case is interpolating between a color and a currentcolor
|
|
if (color1.IsNumericColor() && color2.IsCurrentColor()) {
|
|
double dist = ComputeColorDistance(color1.mColor, NS_RGBA(0, 0, 0, 0));
|
|
aDistance = sqrt(dist * dist + 1);
|
|
return true;
|
|
}
|
|
if (color1.IsCurrentColor() && color2.IsNumericColor()) {
|
|
double dist = ComputeColorDistance(NS_RGBA(0, 0, 0, 0), color2.mColor);
|
|
aDistance = sqrt(dist * dist + 1);
|
|
return true;
|
|
}
|
|
// If we ever reach here, we may want to use the code in
|
|
// bug 1299741 comment 79 to compute it.
|
|
MOZ_ASSERT_UNREACHABLE("We shouldn't get here as we only call "
|
|
"ComputeDistance on pre-interpolation values");
|
|
aDistance = 0.0;
|
|
return true;
|
|
}
|
|
case eUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(aStartValue);
|
|
PixelCalcValue v2 = ExtractCalcValue(aEndValue);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
aDistance = sqrt(difflen * difflen + diffpct * diffpct);
|
|
return true;
|
|
}
|
|
case eUnit_ObjectPosition: {
|
|
const nsCSSValue* position1 = aStartValue.GetCSSValueValue();
|
|
const nsCSSValue* position2 = aEndValue.GetCSSValueValue();
|
|
double squareDistance =
|
|
CalcPositionSquareDistance(*position1,
|
|
*position2);
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
const nsCSSValuePair *pair1 = aStartValue.GetCSSValuePairValue();
|
|
const nsCSSValuePair *pair2 = aEndValue.GetCSSValuePairValue();
|
|
nsCSSUnit unit[2];
|
|
unit[0] = GetCommonUnit(aProperty, pair1->mXValue.GetUnit(),
|
|
pair2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, pair1->mYValue.GetUnit(),
|
|
pair2->mYValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[0] == eCSSUnit_URL || unit[0] == eCSSUnit_Enumerated) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
|
|
&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
|
|
};
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
nsCSSValue nsCSSValuePair::*member = pairValues[i];
|
|
double diffsquared;
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel: {
|
|
float diff = (pair1->*member).GetFloatValue() -
|
|
(pair2->*member).GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = (pair1->*member).GetPercentValue() -
|
|
(pair2->*member).GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(pair1->*member);
|
|
PixelCalcValue v2 = ExtractCalcValue(pair2->*member);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValueTriplet: {
|
|
const nsCSSValueTriplet *triplet1 = aStartValue.GetCSSValueTripletValue();
|
|
const nsCSSValueTriplet *triplet2 = aEndValue.GetCSSValueTripletValue();
|
|
nsCSSUnit unit[3];
|
|
unit[0] = GetCommonUnit(aProperty, triplet1->mXValue.GetUnit(),
|
|
triplet2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, triplet1->mYValue.GetUnit(),
|
|
triplet2->mYValue.GetUnit());
|
|
unit[2] = GetCommonUnit(aProperty, triplet1->mZValue.GetUnit(),
|
|
triplet2->mZValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[2] == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
static nsCSSValue nsCSSValueTriplet::* const pairValues[3] = {
|
|
&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
|
|
};
|
|
for (uint32_t i = 0; i < 3; ++i) {
|
|
nsCSSValue nsCSSValueTriplet::*member = pairValues[i];
|
|
double diffsquared;
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel: {
|
|
float diff = (triplet1->*member).GetFloatValue() -
|
|
(triplet2->*member).GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = (triplet1->*member).GetPercentValue() -
|
|
(triplet2->*member).GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(triplet1->*member);
|
|
PixelCalcValue v2 = ExtractCalcValue(triplet2->*member);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
case eCSSUnit_Null:
|
|
diffsquared = 0;
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSRect: {
|
|
const nsCSSRect *rect1 = aStartValue.GetCSSRectValue();
|
|
const nsCSSRect *rect2 = aEndValue.GetCSSRectValue();
|
|
if (rect1->mTop.GetUnit() != rect2->mTop.GetUnit() ||
|
|
rect1->mRight.GetUnit() != rect2->mRight.GetUnit() ||
|
|
rect1->mBottom.GetUnit() != rect2->mBottom.GetUnit() ||
|
|
rect1->mLeft.GetUnit() != rect2->mLeft.GetUnit()) {
|
|
// At least until we have calc()
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
for (uint32_t i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
MOZ_ASSERT((rect1->*member).GetUnit() == (rect2->*member).GetUnit(),
|
|
"should have returned above");
|
|
double diff;
|
|
switch ((rect1->*member).GetUnit()) {
|
|
case eCSSUnit_Pixel:
|
|
diff = (rect1->*member).GetFloatValue() -
|
|
(rect2->*member).GetFloatValue();
|
|
break;
|
|
case eCSSUnit_Auto:
|
|
diff = 0;
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diff * diff;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Dasharray: {
|
|
// NOTE: This produces results on substantially different scales
|
|
// for length values and percentage values, which might even be
|
|
// mixed in the same property value. This means the result isn't
|
|
// particularly useful for paced animation.
|
|
|
|
// Call AddWeighted to make us lists of the same length.
|
|
StyleAnimationValue normValue1, normValue2;
|
|
if (!AddWeighted(aProperty, 1.0, aStartValue, 0.0, aEndValue,
|
|
normValue1) ||
|
|
!AddWeighted(aProperty, 0.0, aStartValue, 1.0, aEndValue,
|
|
normValue2)) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
const nsCSSValueList *list1 = normValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = normValue2.GetCSSValueListValue();
|
|
|
|
MOZ_ASSERT(!list1 == !list2, "lists should be same length");
|
|
while (list1) {
|
|
const nsCSSValue &val1 = list1->mValue;
|
|
const nsCSSValue &val2 = list2->mValue;
|
|
|
|
MOZ_ASSERT(val1.GetUnit() == val2.GetUnit(),
|
|
"unit match should be assured by AddWeighted");
|
|
double diff;
|
|
switch (val1.GetUnit()) {
|
|
case eCSSUnit_Percent:
|
|
diff = val1.GetPercentValue() - val2.GetPercentValue();
|
|
break;
|
|
case eCSSUnit_Number:
|
|
diff = val1.GetFloatValue() - val2.GetFloatValue();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diff * diff;
|
|
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
MOZ_ASSERT(!list1 == !list2, "lists should be same length");
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Shadow: {
|
|
// Call AddWeighted to make us lists of the same length.
|
|
StyleAnimationValue normValue1, normValue2;
|
|
if (!AddWeighted(aProperty, 1.0, aStartValue, 0.0, aEndValue,
|
|
normValue1) ||
|
|
!AddWeighted(aProperty, 0.0, aStartValue, 1.0, aEndValue,
|
|
normValue2)) {
|
|
return false;
|
|
}
|
|
|
|
const nsCSSValueList* shadow1 = normValue1.GetCSSValueListValue();
|
|
const nsCSSValueList* shadow2 = normValue2.GetCSSValueListValue();
|
|
|
|
aDistance = 0.0;
|
|
MOZ_ASSERT(!shadow1 == !shadow2, "lists should be same length");
|
|
while (shadow1) {
|
|
double squareDistance = 0.0;
|
|
if (!ComputeSingleShadowSquareDistance(shadow1, shadow2,
|
|
squareDistance)) {
|
|
NS_ERROR("Unexpected ComputeSingleShadowSquareDistance failure; "
|
|
"why didn't we fail earlier, in AddWeighted calls above?");
|
|
}
|
|
aDistance += squareDistance; // cumulative distance^2; sqrt()'d below.
|
|
|
|
shadow1 = shadow1->mNext;
|
|
shadow2 = shadow2->mNext;
|
|
MOZ_ASSERT(!shadow1 == !shadow2, "lists should be same length");
|
|
}
|
|
aDistance = sqrt(aDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Shape:
|
|
return ComputeShapeDistance(aProperty,
|
|
aStartValue.GetCSSValueArrayValue(),
|
|
aEndValue.GetCSSValueArrayValue(),
|
|
aDistance);
|
|
|
|
case eUnit_Filter:
|
|
return ComputeFilterListDistance(aStartValue.GetCSSValueListValue(),
|
|
aEndValue.GetCSSValueListValue(),
|
|
aDistance);
|
|
|
|
case eUnit_Transform: {
|
|
// FIXME: We don't have an official spec to define the distance of
|
|
// two transform lists, but paced spacing (defined in Web Animations API)
|
|
// needs this, so we implement this according to the concept of the
|
|
// interpolation of two transform lists.
|
|
// Issue: https://www.w3.org/TR/web-animations-1/#issue-789f9fd1
|
|
|
|
const nsCSSValueList* list1 =
|
|
aStartValue.GetCSSValueSharedListValue()->mHead;
|
|
const nsCSSValueList* list2 =
|
|
aEndValue.GetCSSValueSharedListValue()->mHead;
|
|
MOZ_ASSERT(list1);
|
|
MOZ_ASSERT(list2);
|
|
|
|
if (list1->mValue.GetUnit() == eCSSUnit_None &&
|
|
list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
// Both none, nothing happens.
|
|
aDistance = 0.0;
|
|
} else if (list1->mValue.GetUnit() == eCSSUnit_None) {
|
|
nsAutoPtr<nsCSSValueList> none(AddTransformLists(0, list2, 0, list2));
|
|
aDistance = ComputeTransformListDistance(none, list2);
|
|
} else if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
nsAutoPtr<nsCSSValueList> none(AddTransformLists(0, list1, 0, list1));
|
|
aDistance = ComputeTransformListDistance(list1, none);
|
|
} else if (TransformFunctionListsMatch(list1, list2)) {
|
|
aDistance = ComputeTransformListDistance(list1, list2);
|
|
} else {
|
|
aDistance =
|
|
ComputeMismatchedTransfromListDistance(list1, list2, aStyleContext);
|
|
}
|
|
return true;
|
|
}
|
|
case eUnit_BackgroundPositionCoord: {
|
|
const nsCSSValueList *position1 = aStartValue.GetCSSValueListValue();
|
|
const nsCSSValueList *position2 = aEndValue.GetCSSValueListValue();
|
|
|
|
double squareDistance = 0.0;
|
|
MOZ_ASSERT(!position1 == !position2, "lists should be same length");
|
|
|
|
while (position1 && position2) {
|
|
squareDistance += CalcPositionCoordSquareDistance(position1->mValue,
|
|
position2->mValue);
|
|
position1 = position1->mNext;
|
|
position2 = position2->mNext;
|
|
}
|
|
// fail if lists differ in length.
|
|
if (position1 || position2) {
|
|
return false;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePairList: {
|
|
const nsCSSValuePairList *list1 = aStartValue.GetCSSValuePairListValue();
|
|
const nsCSSValuePairList *list2 = aEndValue.GetCSSValuePairListValue();
|
|
double squareDistance = 0.0;
|
|
do {
|
|
static nsCSSValue nsCSSValuePairList::* const pairListValues[] = {
|
|
&nsCSSValuePairList::mXValue,
|
|
&nsCSSValuePairList::mYValue,
|
|
};
|
|
for (uint32_t i = 0; i < ArrayLength(pairListValues); ++i) {
|
|
const nsCSSValue &v1 = list1->*(pairListValues[i]);
|
|
const nsCSSValue &v2 = list2->*(pairListValues[i]);
|
|
nsCSSUnit unit =
|
|
GetCommonUnit(aProperty, v1.GetUnit(), v2.GetUnit());
|
|
if (unit == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
double diffsquared = 0.0;
|
|
switch (unit) {
|
|
case eCSSUnit_Number:
|
|
case eCSSUnit_Pixel: {
|
|
float diff = v1.GetFloatValue() - v2.GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = v1.GetPercentValue() - v2.GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue val1 = ExtractCalcValue(v1);
|
|
PixelCalcValue val2 = ExtractCalcValue(v2);
|
|
float difflen = val2.mLength - val1.mLength;
|
|
float diffpct = val2.mPercent - val1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
default:
|
|
if (v1 != v2) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
} while (list1 && list2);
|
|
if (list1 || list2) {
|
|
// We can't interpolate lists of different lengths.
|
|
return false;
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(false, "Can't compute distance using the given common unit");
|
|
return false;
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValueNumber(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()),
|
|
eCSSUnit_Number);
|
|
}
|
|
|
|
static inline float
|
|
GetNumberOrPercent(const nsCSSValue &aValue)
|
|
{
|
|
nsCSSUnit unit = aValue.GetUnit();
|
|
MOZ_ASSERT(unit == eCSSUnit_Number || unit == eCSSUnit_Percent,
|
|
"unexpected unit");
|
|
return (unit == eCSSUnit_Number) ?
|
|
aValue.GetFloatValue() : aValue.GetPercentValue();
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePercentNumber(const uint32_t aValueRestrictions,
|
|
double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, float aInitialVal)
|
|
{
|
|
float n1 = GetNumberOrPercent(aValue1);
|
|
float n2 = GetNumberOrPercent(aValue2);
|
|
|
|
// Rather than interpolating aValue1 and aValue2 directly, we
|
|
// interpolate their *distances from aInitialVal* (the initial value,
|
|
// which is either 1 or 0 for "filter" functions). This matters in
|
|
// cases where aInitialVal is nonzero and the coefficients don't add
|
|
// up to 1. For example, if initialVal is 1, aCoeff1 is 0.5, and
|
|
// aCoeff2 is 0, then we'll return the value halfway between 1 and
|
|
// aValue1, rather than the value halfway between 0 and aValue1.
|
|
// Note that we do something similar in AddTransformScale().
|
|
float result = (n1 - aInitialVal) * aCoeff1 + (n2 - aInitialVal) * aCoeff2;
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions, result + aInitialVal),
|
|
eCSSUnit_Number);
|
|
}
|
|
|
|
// Unclamped AddWeightedColors.
|
|
static RGBAColorData
|
|
AddWeightedColors(double aCoeff1, const RGBAColorData& aValue1,
|
|
double aCoeff2, const RGBAColorData& aValue2)
|
|
{
|
|
float factor1 = aValue1.mA * aCoeff1;
|
|
float factor2 = aValue2.mA * aCoeff2;
|
|
float resultA = factor1 + factor2;
|
|
if (resultA <= 0.0) {
|
|
return {0, 0, 0, 0};
|
|
}
|
|
|
|
if (resultA > 1.0) {
|
|
resultA = 1.0;
|
|
}
|
|
|
|
float resultFactor = 1.0f / resultA;
|
|
return RGBAColorData(
|
|
(aValue1.mR * factor1 + aValue2.mR * factor2) * resultFactor,
|
|
(aValue1.mG * factor1 + aValue2.mG * factor2) * resultFactor,
|
|
(aValue1.mB * factor1 + aValue2.mB * factor2) * resultFactor,
|
|
resultA);
|
|
}
|
|
|
|
// Multiplies |aValue| color by |aDilutionRation|.
|
|
static nscolor
|
|
DiluteColor(const RGBAColorData& aValue, double aDilutionRatio)
|
|
{
|
|
MOZ_ASSERT(aDilutionRatio >= 0.0 && aDilutionRatio <= 1.0,
|
|
"Dilution ratio should be in [0, 1]");
|
|
float resultA = aValue.mA * aDilutionRatio;
|
|
return resultA <= 0.0 ? NS_RGBA(0, 0, 0, 0)
|
|
: aValue.WithAlpha(resultA).ToColor();
|
|
}
|
|
|
|
// Clamped AddWeightedColors.
|
|
static nscolor
|
|
AddWeightedColorsAndClamp(double aCoeff1, const RGBAColorData& aValue1,
|
|
double aCoeff2, const RGBAColorData& aValue2)
|
|
{
|
|
// We are using AddWeighted() with a zero aCoeff2 for colors to
|
|
// pretend AddWeighted() against transparent color, i.e. rgba(0, 0, 0, 0).
|
|
// But unpremultiplication in AddWeightedColors() does not work well
|
|
// for such cases, so we use another function named DiluteColor() which
|
|
// has a similar logic to AddWeightedColors().
|
|
return aCoeff2 == 0.0
|
|
? DiluteColor(aValue1, aCoeff1)
|
|
: AddWeightedColors(aCoeff1, aValue1, aCoeff2, aValue2).ToColor();
|
|
}
|
|
|
|
void
|
|
AppendToCSSValueList(UniquePtr<nsCSSValueList>& aHead,
|
|
UniquePtr<nsCSSValueList>&& aValueToAppend,
|
|
nsCSSValueList** aTail)
|
|
{
|
|
MOZ_ASSERT(!aHead == !*aTail,
|
|
"Can't have head w/o tail, & vice versa");
|
|
|
|
if (!aHead) {
|
|
aHead = Move(aValueToAppend);
|
|
*aTail = aHead.get();
|
|
} else {
|
|
(*aTail) = (*aTail)->mNext = aValueToAppend.release();
|
|
}
|
|
}
|
|
|
|
void
|
|
AppendToCSSValuePairList(UniquePtr<nsCSSValuePairList>& aHead,
|
|
UniquePtr<nsCSSValuePairList>&& aValueToAppend,
|
|
nsCSSValuePairList** aTail)
|
|
{
|
|
MOZ_ASSERT(!aHead == !*aTail,
|
|
"Can't have head w/o tail, & vice versa");
|
|
|
|
if (!aHead) {
|
|
aHead = Move(aValueToAppend);
|
|
*aTail = aHead.get();
|
|
} else {
|
|
(*aTail) = (*aTail)->mNext = aValueToAppend.release();
|
|
}
|
|
}
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedShadowItems(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
ColorAdditionType aColorAdditionType)
|
|
{
|
|
// X, Y, Radius, Spread, Color, Inset
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
nsCSSValue::Array *array1 = aValue1.GetArrayValue();
|
|
nsCSSValue::Array *array2 = aValue2.GetArrayValue();
|
|
RefPtr<nsCSSValue::Array> resultArray = nsCSSValue::Array::Create(6);
|
|
|
|
for (size_t i = 0; i < 4; ++i) {
|
|
AddCSSValuePixel(aCoeff1, array1->Item(i), aCoeff2, array2->Item(i),
|
|
resultArray->Item(i),
|
|
// blur radius must be nonnegative
|
|
(i == 2) ? CSS_PROPERTY_VALUE_NONNEGATIVE : 0);
|
|
}
|
|
|
|
const nsCSSValue& colorValue1 = array1->Item(4);
|
|
const nsCSSValue& colorValue2 = array2->Item(4);
|
|
const nsCSSValue& inset1 = array1->Item(5);
|
|
const nsCSSValue& inset2 = array2->Item(5);
|
|
if ((colorValue1.GetUnit() != colorValue2.GetUnit() &&
|
|
(!colorValue1.IsNumericColorUnit() ||
|
|
!colorValue2.IsNumericColorUnit())) ||
|
|
inset1.GetUnit() != inset2.GetUnit()) {
|
|
// We don't know how to animate between color and no-color, or
|
|
// between inset and not-inset.
|
|
// NOTE: In case when both colors' units are eCSSUnit_Null, that means
|
|
// neither color value was specified, so we can interpolate.
|
|
return nullptr;
|
|
}
|
|
|
|
if (colorValue1.GetUnit() != eCSSUnit_Null) {
|
|
RGBAColorData color1 = ExtractColor(colorValue1);
|
|
RGBAColorData color2 = ExtractColor(colorValue2);
|
|
if (aColorAdditionType == ColorAdditionType::Clamped) {
|
|
resultArray->Item(4).SetColorValue(
|
|
AddWeightedColorsAndClamp(aCoeff1, color1, aCoeff2, color2));
|
|
} else {
|
|
resultArray->Item(4).SetRGBAColorValue(
|
|
AddWeightedColors(aCoeff1, color1, aCoeff2, color2));
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(inset1 == inset2, "should match");
|
|
resultArray->Item(5) = inset1;
|
|
|
|
auto resultItem = MakeUnique<nsCSSValueList>();
|
|
resultItem->mValue.SetArrayValue(resultArray, eCSSUnit_Array);
|
|
return resultItem;
|
|
}
|
|
|
|
static void
|
|
AddTransformScale(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
// Handle scale, and the two matrix components where identity is 1, by
|
|
// subtracting 1, multiplying by the coefficients, and then adding 1
|
|
// back. This gets the right AddWeighted behavior and gets us the
|
|
// interpolation-against-identity behavior for free.
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
|
|
float v1 = aValue1.GetFloatValue() - 1.0f,
|
|
v2 = aValue2.GetFloatValue() - 1.0f;
|
|
float result = v1 * aCoeff1 + v2 * aCoeff2;
|
|
aResult.SetFloatValue(EnsureNotNan(result + 1.0f), eCSSUnit_Number);
|
|
}
|
|
|
|
/* static */ already_AddRefed<nsCSSValue::Array>
|
|
StyleAnimationValue::AppendTransformFunction(nsCSSKeyword aTransformFunction,
|
|
nsCSSValueList**& aListTail)
|
|
{
|
|
RefPtr<nsCSSValue::Array> arr = AppendFunction(aTransformFunction);
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
item->mValue.SetArrayValue(arr, eCSSUnit_Function);
|
|
|
|
*aListTail = item;
|
|
aListTail = &item->mNext;
|
|
|
|
return arr.forget();
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddDifferentTransformLists(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
nsCSSKeyword aOperatorType)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
RefPtr<nsCSSValue::Array> arr;
|
|
arr =
|
|
StyleAnimationValue::AppendTransformFunction(aOperatorType,
|
|
resultTail);
|
|
|
|
// FIXME: We should change the other transform code to also only
|
|
// take a single progress value, as having values that don't
|
|
// sum to 1 doesn't make sense for these.
|
|
if (aList1 == aList2) {
|
|
arr->Item(1).Reset();
|
|
// For accumulation, we need to increase accumulation count for |aList1|.
|
|
if (aOperatorType == eCSSKeyword_accumulatematrix) {
|
|
aCoeff2 += 1.0;
|
|
}
|
|
} else {
|
|
aList1->CloneInto(arr->Item(1).SetListValue());
|
|
}
|
|
|
|
aList2->CloneInto(arr->Item(2).SetListValue());
|
|
arr->Item(3).SetPercentValue(aCoeff2);
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedFilterFunctionImpl(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
ColorAdditionType aColorAdditionType)
|
|
{
|
|
// AddWeightedFilterFunction should be our only caller, and it should ensure
|
|
// that both args are non-null.
|
|
MOZ_ASSERT(aList1, "expected filter list");
|
|
MOZ_ASSERT(aList2, "expected filter list");
|
|
MOZ_ASSERT(aList1->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
MOZ_ASSERT(aList2->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
RefPtr<nsCSSValue::Array> a1 = aList1->mValue.GetArrayValue(),
|
|
a2 = aList2->mValue.GetArrayValue();
|
|
nsCSSKeyword filterFunction = a1->Item(0).GetKeywordValue();
|
|
if (filterFunction != a2->Item(0).GetKeywordValue()) {
|
|
return nullptr; // Can't add two filters of different types.
|
|
}
|
|
|
|
auto resultList = MakeUnique<nsCSSValueList>();
|
|
nsCSSValue::Array* result =
|
|
resultList->mValue.InitFunction(filterFunction, 1);
|
|
|
|
// "hue-rotate" is the only filter-function that accepts negative values, and
|
|
// we don't use this "restrictions" variable in its clause below.
|
|
const uint32_t restrictions = CSS_PROPERTY_VALUE_NONNEGATIVE;
|
|
const nsCSSValue& funcArg1 = a1->Item(1);
|
|
const nsCSSValue& funcArg2 = a2->Item(1);
|
|
nsCSSValue& resultArg = result->Item(1);
|
|
float initialVal = 1.0f;
|
|
switch (filterFunction) {
|
|
case eCSSKeyword_blur: {
|
|
nsCSSUnit unit;
|
|
if (funcArg1.GetUnit() == funcArg2.GetUnit()) {
|
|
unit = funcArg1.GetUnit();
|
|
} else {
|
|
// If units differ, we'll just combine them with calc().
|
|
unit = eCSSUnit_Calc;
|
|
}
|
|
if (!AddCSSValuePixelPercentCalc(restrictions,
|
|
unit,
|
|
aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg)) {
|
|
return nullptr;
|
|
}
|
|
break;
|
|
}
|
|
case eCSSKeyword_grayscale:
|
|
case eCSSKeyword_invert:
|
|
case eCSSKeyword_sepia:
|
|
initialVal = 0.0f;
|
|
MOZ_FALLTHROUGH;
|
|
case eCSSKeyword_brightness:
|
|
case eCSSKeyword_contrast:
|
|
case eCSSKeyword_opacity:
|
|
case eCSSKeyword_saturate:
|
|
AddCSSValuePercentNumber(restrictions,
|
|
aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg,
|
|
initialVal);
|
|
break;
|
|
case eCSSKeyword_hue_rotate:
|
|
AddCSSValueAngle(aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg);
|
|
break;
|
|
case eCSSKeyword_drop_shadow: {
|
|
MOZ_ASSERT(!funcArg1.GetListValue()->mNext &&
|
|
!funcArg2.GetListValue()->mNext,
|
|
"drop-shadow filter func doesn't support lists");
|
|
UniquePtr<nsCSSValueList> shadowValue =
|
|
AddWeightedShadowItems(aCoeff1,
|
|
funcArg1.GetListValue()->mValue,
|
|
aCoeff2,
|
|
funcArg2.GetListValue()->mValue,
|
|
aColorAdditionType);
|
|
if (!shadowValue) {
|
|
return nullptr;
|
|
}
|
|
resultArg.AdoptListValue(Move(shadowValue));
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(false, "unknown filter function");
|
|
return nullptr;
|
|
}
|
|
|
|
return resultList;
|
|
}
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedFilterFunction(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
ColorAdditionType aColorAdditionType)
|
|
{
|
|
MOZ_ASSERT(aList1 || aList2,
|
|
"one function list item must not be null");
|
|
// Note that one of our arguments could be null, indicating that
|
|
// it's the initial value. Rather than adding special null-handling
|
|
// logic, we just check for null values and replace them with
|
|
// 0 * the other value. That way, AddWeightedFilterFunctionImpl can assume
|
|
// its args are non-null.
|
|
if (!aList1) {
|
|
return AddWeightedFilterFunctionImpl(aCoeff2, aList2, 0, aList2,
|
|
aColorAdditionType);
|
|
}
|
|
if (!aList2) {
|
|
return AddWeightedFilterFunctionImpl(aCoeff1, aList1, 0, aList1,
|
|
aColorAdditionType);
|
|
}
|
|
|
|
return AddWeightedFilterFunctionImpl(aCoeff1, aList1, aCoeff2, aList2,
|
|
aColorAdditionType);
|
|
}
|
|
|
|
static inline uint32_t
|
|
ShapeArgumentCount(nsCSSKeyword aShapeFunction)
|
|
{
|
|
switch (aShapeFunction) {
|
|
case eCSSKeyword_circle:
|
|
return 2; // radius and center point
|
|
case eCSSKeyword_polygon:
|
|
return 2; // fill rule and a list of points
|
|
case eCSSKeyword_ellipse:
|
|
return 3; // two radii and center point
|
|
case eCSSKeyword_inset:
|
|
return 5; // four edge offsets and a list of corner radii
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown shape type");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
AddPositions(double aCoeff1, const nsCSSValue& aPos1,
|
|
double aCoeff2, const nsCSSValue& aPos2,
|
|
nsCSSValue& aResultPos)
|
|
{
|
|
MOZ_ASSERT(aPos1.GetUnit() == eCSSUnit_Array &&
|
|
aPos2.GetUnit() == eCSSUnit_Array,
|
|
"Args should be CSS <position>s, encoded as arrays");
|
|
|
|
const nsCSSValue::Array* posArray1 = aPos1.GetArrayValue();
|
|
const nsCSSValue::Array* posArray2 = aPos2.GetArrayValue();
|
|
MOZ_ASSERT(posArray1->Count() == 4 && posArray2->Count() == 4,
|
|
"CSSParserImpl::ParsePositionValue creates an array of length "
|
|
"4 - how did we get here?");
|
|
|
|
nsCSSValue::Array* resultPosArray = nsCSSValue::Array::Create(4);
|
|
aResultPos.SetArrayValue(resultPosArray, eCSSUnit_Array);
|
|
|
|
// Only iterate over elements 1 and 3. The <position> is 'uncomputed' to
|
|
// only those elements. See also the comment in SetPositionValue.
|
|
for (size_t i = 1; i < 4; i += 2) {
|
|
const nsCSSValue& v1 = posArray1->Item(i);
|
|
const nsCSSValue& v2 = posArray2->Item(i);
|
|
nsCSSValue& vr = resultPosArray->Item(i);
|
|
AddCSSValueCanonicalCalc(aCoeff1, v1,
|
|
aCoeff2, v2, vr);
|
|
}
|
|
}
|
|
|
|
static Maybe<nsCSSValuePair>
|
|
AddCSSValuePair(nsCSSPropertyID aProperty, uint32_t aRestrictions,
|
|
double aCoeff1, const nsCSSValuePair* aPair1,
|
|
double aCoeff2, const nsCSSValuePair* aPair2)
|
|
{
|
|
MOZ_ASSERT(aPair1, "expected pair");
|
|
MOZ_ASSERT(aPair2, "expected pair");
|
|
|
|
Maybe<nsCSSValuePair> result;
|
|
nsCSSUnit unit[2];
|
|
unit[0] = GetCommonUnit(aProperty, aPair1->mXValue.GetUnit(),
|
|
aPair2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, aPair1->mYValue.GetUnit(),
|
|
aPair2->mYValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[0] == eCSSUnit_URL || unit[0] == eCSSUnit_Enumerated) {
|
|
return result; // Nothing() (returning |result| for RVO)
|
|
}
|
|
|
|
result.emplace();
|
|
|
|
static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
|
|
&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
|
|
};
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
nsCSSValue nsCSSValuePair::*member = pairValues[i];
|
|
if (!AddCSSValuePixelPercentCalc(aRestrictions, unit[i],
|
|
aCoeff1, aPair1->*member,
|
|
aCoeff2, aPair2->*member,
|
|
result.ref().*member) ) {
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
result.reset();
|
|
return result; // Nothing() (returning |result| for RVO)
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static UniquePtr<nsCSSValuePairList>
|
|
AddCSSValuePairList(nsCSSPropertyID aProperty,
|
|
double aCoeff1, const nsCSSValuePairList* aList1,
|
|
double aCoeff2, const nsCSSValuePairList* aList2)
|
|
{
|
|
MOZ_ASSERT(aList1, "Can't add a null list");
|
|
MOZ_ASSERT(aList2, "Can't add a null list");
|
|
|
|
auto result = MakeUnique<nsCSSValuePairList>();
|
|
nsCSSValuePairList* resultPtr = result.get();
|
|
|
|
do {
|
|
static nsCSSValue nsCSSValuePairList::* const pairListValues[] = {
|
|
&nsCSSValuePairList::mXValue,
|
|
&nsCSSValuePairList::mYValue,
|
|
};
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (uint32_t i = 0; i < ArrayLength(pairListValues); ++i) {
|
|
const nsCSSValue& v1 = aList1->*(pairListValues[i]);
|
|
const nsCSSValue& v2 = aList2->*(pairListValues[i]);
|
|
|
|
nsCSSValue& vr = resultPtr->*(pairListValues[i]);
|
|
nsCSSUnit unit =
|
|
GetCommonUnit(aProperty, v1.GetUnit(), v2.GetUnit());
|
|
if (unit == eCSSUnit_Null) {
|
|
return nullptr;
|
|
}
|
|
if (unit == eCSSUnit_Number) {
|
|
AddCSSValueNumber(aCoeff1, v1,
|
|
aCoeff2, v2,
|
|
vr, restrictions);
|
|
} else if (!AddCSSValuePixelPercentCalc(restrictions, unit,
|
|
aCoeff1, v1,
|
|
aCoeff2, v2, vr)) {
|
|
if (v1 != v2) {
|
|
return nullptr;
|
|
}
|
|
vr = v1;
|
|
}
|
|
}
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
if (!aList1 || !aList2) {
|
|
break;
|
|
}
|
|
resultPtr->mNext = new nsCSSValuePairList;
|
|
resultPtr = resultPtr->mNext;
|
|
} while (aList1 && aList2);
|
|
|
|
if (aList1 || aList2) {
|
|
return nullptr; // We can't interpolate lists of different lengths
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static already_AddRefed<nsCSSValue::Array>
|
|
AddShapeFunction(nsCSSPropertyID aProperty,
|
|
double aCoeff1, const nsCSSValue::Array* aArray1,
|
|
double aCoeff2, const nsCSSValue::Array* aArray2,
|
|
Restrictions aRestriction)
|
|
{
|
|
MOZ_ASSERT(aArray1 && aArray1->Count() == 2, "expected shape function");
|
|
MOZ_ASSERT(aArray2 && aArray2->Count() == 2, "expected shape function");
|
|
MOZ_ASSERT(aArray1->Item(0).GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
MOZ_ASSERT(aArray2->Item(0).GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
MOZ_ASSERT(aArray1->Item(1).GetUnit() == eCSSUnit_Enumerated,
|
|
"expected geometry-box");
|
|
MOZ_ASSERT(aArray2->Item(1).GetUnit() == eCSSUnit_Enumerated,
|
|
"expected geometry-box");
|
|
|
|
if (aArray1->Item(1).GetIntValue() != aArray2->Item(1).GetIntValue()) {
|
|
return nullptr; // Both shapes must use the same reference box.
|
|
}
|
|
|
|
const nsCSSValue::Array* func1 = aArray1->Item(0).GetArrayValue();
|
|
const nsCSSValue::Array* func2 = aArray2->Item(0).GetArrayValue();
|
|
nsCSSKeyword shapeFuncName = func1->Item(0).GetKeywordValue();
|
|
if (shapeFuncName != func2->Item(0).GetKeywordValue()) {
|
|
return nullptr; // Can't add two shapes of different types.
|
|
}
|
|
|
|
RefPtr<nsCSSValue::Array> result = nsCSSValue::Array::Create(2);
|
|
|
|
nsCSSValue::Array* resultFuncArgs =
|
|
result->Item(0).InitFunction(shapeFuncName,
|
|
ShapeArgumentCount(shapeFuncName));
|
|
switch (shapeFuncName) {
|
|
case eCSSKeyword_ellipse:
|
|
// Add ellipses' |ry| values (but fail if we encounter an enum):
|
|
if (!AddCSSValuePixelPercentCalc(aRestriction == Restrictions::Enable
|
|
? CSS_PROPERTY_VALUE_NONNEGATIVE
|
|
: 0,
|
|
GetCommonUnit(aProperty,
|
|
func1->Item(2).GetUnit(),
|
|
func2->Item(2).GetUnit()),
|
|
aCoeff1, func1->Item(2),
|
|
aCoeff2, func2->Item(2),
|
|
resultFuncArgs->Item(2))) {
|
|
return nullptr;
|
|
}
|
|
MOZ_FALLTHROUGH; // to handle rx and center point
|
|
case eCSSKeyword_circle: {
|
|
// Add circles' |r| (or ellipses' |rx|) values:
|
|
if (!AddCSSValuePixelPercentCalc(aRestriction == Restrictions::Enable
|
|
? CSS_PROPERTY_VALUE_NONNEGATIVE
|
|
: 0,
|
|
GetCommonUnit(aProperty,
|
|
func1->Item(1).GetUnit(),
|
|
func2->Item(1).GetUnit()),
|
|
aCoeff1, func1->Item(1),
|
|
aCoeff2, func2->Item(1),
|
|
resultFuncArgs->Item(1))) {
|
|
return nullptr;
|
|
}
|
|
// Add center points (defined as a <position>).
|
|
size_t posIndex = shapeFuncName == eCSSKeyword_circle ? 2 : 3;
|
|
AddPositions(aCoeff1, func1->Item(posIndex),
|
|
aCoeff2, func2->Item(posIndex),
|
|
resultFuncArgs->Item(posIndex));
|
|
break;
|
|
}
|
|
case eCSSKeyword_polygon: {
|
|
// Add polygons' corresponding points (if the fill rule matches):
|
|
int32_t fillRule = func1->Item(1).GetIntValue();
|
|
if (fillRule != func2->Item(1).GetIntValue()) {
|
|
return nullptr; // can't interpolate between different fill rules
|
|
}
|
|
resultFuncArgs->Item(1).SetIntValue(fillRule, eCSSUnit_Enumerated);
|
|
|
|
const nsCSSValuePairList* points1 = func1->Item(2).GetPairListValue();
|
|
const nsCSSValuePairList* points2 = func2->Item(2).GetPairListValue();
|
|
UniquePtr<nsCSSValuePairList> resultPoints =
|
|
AddCSSValuePairList(aProperty, aCoeff1, points1, aCoeff2, points2);
|
|
if (!resultPoints) {
|
|
return nullptr;
|
|
}
|
|
resultFuncArgs->Item(2).AdoptPairListValue(Move(resultPoints));
|
|
break;
|
|
}
|
|
case eCSSKeyword_inset: {
|
|
MOZ_ASSERT(func1->Count() == 6 && func2->Count() == 6,
|
|
"Update for CSSParserImpl::ParseInsetFunction changes");
|
|
// Items 1-4 are respectively the top, right, bottom and left offsets
|
|
// from the reference box.
|
|
for (size_t i = 1; i <= 4; ++i) {
|
|
if (!AddCSSValuePixelPercentCalc(aRestriction == Restrictions::Enable
|
|
? CSS_PROPERTY_VALUE_NONNEGATIVE
|
|
: 0,
|
|
GetCommonUnit(aProperty,
|
|
func1->Item(i).GetUnit(),
|
|
func2->Item(i).GetUnit()),
|
|
aCoeff1, func1->Item(i),
|
|
aCoeff2, func2->Item(i),
|
|
resultFuncArgs->Item(i))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
// Item 5 contains the radii of the rounded corners for the inset
|
|
// rectangle.
|
|
MOZ_ASSERT(func1->Item(5).GetUnit() == eCSSUnit_Array &&
|
|
func2->Item(5).GetUnit() == eCSSUnit_Array,
|
|
"Expected two arrays");
|
|
const nsCSSValue::Array* radii1 = func1->Item(5).GetArrayValue();
|
|
const nsCSSValue::Array* radii2 = func2->Item(5).GetArrayValue();
|
|
MOZ_ASSERT(radii1->Count() == 4 && radii2->Count() == 4);
|
|
nsCSSValue::Array* resultRadii = nsCSSValue::Array::Create(4);
|
|
resultFuncArgs->Item(5).SetArrayValue(resultRadii, eCSSUnit_Array);
|
|
// We use an arbitrary border-radius property here to get the appropriate
|
|
// restrictions for radii since this is a <border-radius> value.
|
|
uint32_t restrictions =
|
|
aRestriction == Restrictions::Enable
|
|
? nsCSSProps::ValueRestrictions(eCSSProperty_border_top_left_radius)
|
|
: 0;
|
|
for (size_t i = 0; i < 4; ++i) {
|
|
const nsCSSValuePair& pair1 = radii1->Item(i).GetPairValue();
|
|
const nsCSSValuePair& pair2 = radii2->Item(i).GetPairValue();
|
|
const Maybe<nsCSSValuePair> pairResult =
|
|
AddCSSValuePair(aProperty, restrictions,
|
|
aCoeff1, &pair1,
|
|
aCoeff2, &pair2);
|
|
if (!pairResult) {
|
|
return nullptr;
|
|
}
|
|
resultRadii->Item(i).SetPairValue(pairResult.ptr());
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown shape type");
|
|
return nullptr;
|
|
}
|
|
|
|
// set the geometry-box value
|
|
result->Item(1).SetIntValue(aArray1->Item(1).GetIntValue(),
|
|
eCSSUnit_Enumerated);
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddTransformLists(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
nsCSSKeyword aOperatorType)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
do {
|
|
RefPtr<nsCSSValue::Array> a1 = ToPrimitive(aList1->mValue.GetArrayValue()),
|
|
a2 = ToPrimitive(aList2->mValue.GetArrayValue());
|
|
MOZ_ASSERT(
|
|
TransformFunctionsMatch(nsStyleTransformMatrix::TransformFunctionOf(a1),
|
|
nsStyleTransformMatrix::TransformFunctionOf(a2)),
|
|
"transform function mismatch");
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail (may leak)");
|
|
|
|
nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(a1);
|
|
RefPtr<nsCSSValue::Array> arr;
|
|
if (tfunc != eCSSKeyword_matrix &&
|
|
tfunc != eCSSKeyword_matrix3d &&
|
|
tfunc != eCSSKeyword_interpolatematrix &&
|
|
tfunc != eCSSKeyword_rotate3d &&
|
|
tfunc != eCSSKeyword_perspective) {
|
|
arr = StyleAnimationValue::AppendTransformFunction(tfunc, resultTail);
|
|
}
|
|
|
|
switch (tfunc) {
|
|
case eCSSKeyword_translate3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
AddTransformTranslate(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
AddTransformTranslate(aCoeff1, a1->Item(2), aCoeff2, a2->Item(2),
|
|
arr->Item(2));
|
|
AddTransformTranslate(aCoeff1, a1->Item(3), aCoeff2, a2->Item(3),
|
|
arr->Item(3));
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
|
|
AddTransformScale(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
AddTransformScale(aCoeff1, a1->Item(2), aCoeff2, a2->Item(2),
|
|
arr->Item(2));
|
|
AddTransformScale(aCoeff1, a1->Item(3), aCoeff2, a2->Item(3),
|
|
arr->Item(3));
|
|
|
|
break;
|
|
}
|
|
// It would probably be nicer to animate skew in tangent space
|
|
// rather than angle space. However, it's easy to specify
|
|
// skews with infinite tangents, and behavior changes pretty
|
|
// drastically when crossing such skews (since the direction of
|
|
// animation flips), so interop is probably more important here.
|
|
case eCSSKeyword_skew: {
|
|
MOZ_ASSERT(a1->Count() == 2 || a1->Count() == 3,
|
|
"unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2 || a2->Count() == 3,
|
|
"unexpected count");
|
|
|
|
nsCSSValue zero(0.0f, eCSSUnit_Radian);
|
|
// Add Y component of skew.
|
|
AddCSSValueAngle(aCoeff1,
|
|
a1->Count() == 3 ? a1->Item(2) : zero,
|
|
aCoeff2,
|
|
a2->Count() == 3 ? a2->Item(2) : zero,
|
|
arr->Item(2));
|
|
|
|
// Add X component of skew (which can be merged with case below
|
|
// in non-DEBUG).
|
|
AddCSSValueAngle(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_skewx:
|
|
case eCSSKeyword_skewy:
|
|
case eCSSKeyword_rotate:
|
|
case eCSSKeyword_rotatex:
|
|
case eCSSKeyword_rotatey:
|
|
case eCSSKeyword_rotatez: {
|
|
MOZ_ASSERT(a1->Count() == 2, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2, "unexpected count");
|
|
|
|
AddCSSValueAngle(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_rotate3d: {
|
|
Point3D vector1(a1->Item(1).GetFloatValue(),
|
|
a1->Item(2).GetFloatValue(),
|
|
a1->Item(3).GetFloatValue());
|
|
vector1.Normalize();
|
|
Point3D vector2(a2->Item(1).GetFloatValue(),
|
|
a2->Item(2).GetFloatValue(),
|
|
a2->Item(3).GetFloatValue());
|
|
vector2.Normalize();
|
|
|
|
// Handle rotate3d with matched (normalized) vectors,
|
|
// otherwise fallthrough to the next switch statement
|
|
// and do matrix decomposition.
|
|
if (vector1 == vector2) {
|
|
// We skipped appending a transform function above for rotate3d,
|
|
// so do it now.
|
|
arr = StyleAnimationValue::AppendTransformFunction(tfunc, resultTail);
|
|
arr->Item(1).SetFloatValue(vector1.x, eCSSUnit_Number);
|
|
arr->Item(2).SetFloatValue(vector1.y, eCSSUnit_Number);
|
|
arr->Item(3).SetFloatValue(vector1.z, eCSSUnit_Number);
|
|
|
|
AddCSSValueAngle(aCoeff1, a1->Item(4), aCoeff2, a2->Item(4),
|
|
arr->Item(4));
|
|
break;
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
}
|
|
case eCSSKeyword_matrix:
|
|
case eCSSKeyword_matrix3d:
|
|
case eCSSKeyword_perspective:
|
|
if (aCoeff1 == 0.0 && aCoeff2 == 0.0) {
|
|
// Special case. If both coefficients are 0.0, we should apply an
|
|
// identity transform function.
|
|
arr = StyleAnimationValue::AppendTransformFunction(tfunc, resultTail);
|
|
|
|
if (tfunc == eCSSKeyword_rotate3d) {
|
|
arr->Item(1).SetFloatValue(0.0, eCSSUnit_Number);
|
|
arr->Item(2).SetFloatValue(0.0, eCSSUnit_Number);
|
|
arr->Item(3).SetFloatValue(1.0, eCSSUnit_Number);
|
|
arr->Item(4).SetFloatValue(0.0, eCSSUnit_Radian);
|
|
} else if (tfunc == eCSSKeyword_perspective) {
|
|
// The parameter of the identity perspective function is
|
|
// positive infinite.
|
|
arr->Item(1).SetFloatValue(std::numeric_limits<float>::infinity(),
|
|
eCSSUnit_Pixel);
|
|
} else {
|
|
nsStyleTransformMatrix::SetIdentityMatrix(arr);
|
|
}
|
|
break;
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
case eCSSKeyword_interpolatematrix: {
|
|
// FIXME: If the matrix contains only numbers then we could decompose
|
|
// here.
|
|
|
|
// Construct temporary lists with only this item in them.
|
|
nsCSSValueList tempList1, tempList2;
|
|
tempList1.mValue = aList1->mValue;
|
|
tempList2.mValue = aList2->mValue;
|
|
|
|
if (aList1 == aList2) {
|
|
*resultTail =
|
|
AddDifferentTransformLists(aCoeff1, &tempList1,
|
|
aCoeff2, &tempList1,
|
|
aOperatorType);
|
|
} else {
|
|
*resultTail =
|
|
AddDifferentTransformLists(aCoeff1, &tempList1,
|
|
aCoeff2, &tempList2,
|
|
aOperatorType);
|
|
}
|
|
|
|
// Now advance resultTail to point to the new tail slot.
|
|
while (*resultTail) {
|
|
resultTail = &(*resultTail)->mNext;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"unknown transform function or accumulatematrix");
|
|
}
|
|
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
} while (aList1);
|
|
MOZ_ASSERT(!aList2, "list length mismatch");
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail");
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static void
|
|
AddPositionCoords(double aCoeff1, const nsCSSValue& aPos1,
|
|
double aCoeff2, const nsCSSValue& aPos2,
|
|
nsCSSValue& aResultPos)
|
|
{
|
|
const nsCSSValue::Array* posArray1 = aPos1.GetArrayValue();
|
|
const nsCSSValue::Array* posArray2 = aPos2.GetArrayValue();
|
|
nsCSSValue::Array* resultPosArray = nsCSSValue::Array::Create(2);
|
|
aResultPos.SetArrayValue(resultPosArray, eCSSUnit_Array);
|
|
|
|
/* Only compute element 1. The <position-coord> is
|
|
* 'uncomputed' to only that element.
|
|
*/
|
|
const nsCSSValue& v1 = posArray1->Item(1);
|
|
const nsCSSValue& v2 = posArray2->Item(1);
|
|
nsCSSValue& vr = resultPosArray->Item(1);
|
|
AddCSSValueCanonicalCalc(aCoeff1, v1,
|
|
aCoeff2, v2, vr);
|
|
}
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedShadowList(double aCoeff1,
|
|
const nsCSSValueList* aShadow1,
|
|
double aCoeff2,
|
|
const nsCSSValueList* aShadow2,
|
|
ColorAdditionType aColorAdditionType)
|
|
{
|
|
// This is implemented according to:
|
|
// http://dev.w3.org/csswg/css3-transitions/#animation-of-property-types-
|
|
// and the third item in the summary of:
|
|
// http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
|
|
UniquePtr<nsCSSValueList> result;
|
|
nsCSSValueList* tail = nullptr;
|
|
while (aShadow1 && aShadow2) {
|
|
UniquePtr<nsCSSValueList> shadowValue =
|
|
AddWeightedShadowItems(aCoeff1, aShadow1->mValue,
|
|
aCoeff2, aShadow2->mValue,
|
|
aColorAdditionType);
|
|
if (!shadowValue) {
|
|
return nullptr;
|
|
}
|
|
aShadow1 = aShadow1->mNext;
|
|
aShadow2 = aShadow2->mNext;
|
|
AppendToCSSValueList(result, Move(shadowValue), &tail);
|
|
}
|
|
if (aShadow1 || aShadow2) {
|
|
const nsCSSValueList *longShadow;
|
|
double longCoeff;
|
|
if (aShadow1) {
|
|
longShadow = aShadow1;
|
|
longCoeff = aCoeff1;
|
|
} else {
|
|
longShadow = aShadow2;
|
|
longCoeff = aCoeff2;
|
|
}
|
|
|
|
while (longShadow) {
|
|
// Passing coefficients that add to less than 1 produces the
|
|
// desired result of interpolating "0 0 0 transparent" with
|
|
// the current shadow.
|
|
UniquePtr<nsCSSValueList> shadowValue =
|
|
AddWeightedShadowItems(longCoeff, longShadow->mValue,
|
|
0.0, longShadow->mValue,
|
|
aColorAdditionType);
|
|
if (!shadowValue) {
|
|
return nullptr;
|
|
}
|
|
|
|
longShadow = longShadow->mNext;
|
|
AppendToCSSValueList(result, Move(shadowValue), &tail);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static UniquePtr<nsCSSValueList>
|
|
AddWeightedFilterList(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
ColorAdditionType aColorAdditionType)
|
|
{
|
|
UniquePtr<nsCSSValueList> result;
|
|
nsCSSValueList* tail = nullptr;
|
|
while (aList1 || aList2) {
|
|
if ((aList1 && aList1->mValue.GetUnit() != eCSSUnit_Function) ||
|
|
(aList2 && aList2->mValue.GetUnit() != eCSSUnit_Function)) {
|
|
// If we don't have filter-functions, we must have filter-URLs, which
|
|
// we can't add or interpolate.
|
|
return nullptr;
|
|
}
|
|
|
|
UniquePtr<nsCSSValueList> resultFunction =
|
|
AddWeightedFilterFunction(aCoeff1, aList1, aCoeff2, aList2,
|
|
aColorAdditionType);
|
|
if (!resultFunction) {
|
|
// filter function mismatch
|
|
return nullptr;
|
|
}
|
|
|
|
AppendToCSSValueList(result, Move(resultFunction), &tail);
|
|
|
|
// move to next aList items
|
|
if (aList1) {
|
|
aList1 = aList1->mNext;
|
|
}
|
|
if (aList2) {
|
|
aList2 = aList2->mNext;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::AddWeighted(nsCSSPropertyID aProperty,
|
|
double aCoeff1,
|
|
const StyleAnimationValue& aValue1,
|
|
double aCoeff2,
|
|
const StyleAnimationValue& aValue2,
|
|
StyleAnimationValue& aResultValue)
|
|
{
|
|
Unit commonUnit =
|
|
GetCommonUnit(aProperty, aValue1.GetUnit(), aValue2.GetUnit());
|
|
// Maybe need a followup method to convert the inputs into the common
|
|
// unit-type, if they don't already match it. (Or would it make sense to do
|
|
// that in GetCommonUnit? in which case maybe ConvertToCommonUnit would be
|
|
// better.)
|
|
|
|
switch (commonUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_Normal:
|
|
case eUnit_UnparsedString:
|
|
case eUnit_URL:
|
|
case eUnit_DiscreteCSSValue:
|
|
return false;
|
|
|
|
case eUnit_Enumerated:
|
|
switch (aProperty) {
|
|
case eCSSProperty_font_stretch: {
|
|
// Animate just like eUnit_Integer.
|
|
int32_t result = floor(aCoeff1 * double(aValue1.GetIntValue()) +
|
|
aCoeff2 * double(aValue2.GetIntValue()));
|
|
if (result < NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED) {
|
|
result = NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED;
|
|
} else if (result > NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED) {
|
|
result = NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED;
|
|
}
|
|
aResultValue.SetIntValue(result, eUnit_Enumerated);
|
|
return true;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
case eUnit_Visibility: {
|
|
int32_t enum1 = aValue1.GetIntValue();
|
|
int32_t enum2 = aValue2.GetIntValue();
|
|
if (enum1 == enum2) {
|
|
aResultValue.SetIntValue(enum1, eUnit_Visibility);
|
|
return true;
|
|
}
|
|
if ((enum1 == NS_STYLE_VISIBILITY_VISIBLE) ==
|
|
(enum2 == NS_STYLE_VISIBILITY_VISIBLE)) {
|
|
return false;
|
|
}
|
|
int32_t val1 = enum1 == NS_STYLE_VISIBILITY_VISIBLE;
|
|
int32_t val2 = enum2 == NS_STYLE_VISIBILITY_VISIBLE;
|
|
double interp = aCoeff1 * val1 + aCoeff2 * val2;
|
|
int32_t result = interp > 0.0 ? NS_STYLE_VISIBILITY_VISIBLE
|
|
: (val1 ? enum2 : enum1);
|
|
aResultValue.SetIntValue(result, eUnit_Visibility);
|
|
return true;
|
|
}
|
|
case eUnit_Integer: {
|
|
// http://dev.w3.org/csswg/css3-transitions/#animation-of-property-types-
|
|
// says we should use floor
|
|
int32_t result = floor(aCoeff1 * double(aValue1.GetIntValue()) +
|
|
aCoeff2 * double(aValue2.GetIntValue()));
|
|
if (aProperty == eCSSProperty_font_weight) {
|
|
if (result < 100) {
|
|
result = 100;
|
|
} else if (result > 900) {
|
|
result = 900;
|
|
}
|
|
result -= result % 100;
|
|
} else {
|
|
result = RestrictValue(aProperty, result);
|
|
}
|
|
aResultValue.SetIntValue(result, eUnit_Integer);
|
|
return true;
|
|
}
|
|
case eUnit_Coord: {
|
|
aResultValue.SetCoordValue(RestrictValue(aProperty, NSToCoordRound(
|
|
aCoeff1 * aValue1.GetCoordValue() +
|
|
aCoeff2 * aValue2.GetCoordValue())));
|
|
return true;
|
|
}
|
|
case eUnit_Percent: {
|
|
aResultValue.SetPercentValue(RestrictValue(aProperty,
|
|
aCoeff1 * aValue1.GetPercentValue() +
|
|
aCoeff2 * aValue2.GetPercentValue()));
|
|
return true;
|
|
}
|
|
case eUnit_Float: {
|
|
aResultValue.SetFloatValue(RestrictValue(aProperty,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()));
|
|
return true;
|
|
}
|
|
case eUnit_Color: {
|
|
RGBAColorData color1 = ExtractColor(aValue1);
|
|
RGBAColorData color2 = ExtractColor(aValue2);
|
|
auto resultColor = MakeUnique<nsCSSValue>();
|
|
resultColor->SetColorValue(
|
|
AddWeightedColorsAndClamp(aCoeff1, color1, aCoeff2, color2));
|
|
aResultValue.SetAndAdoptCSSValueValue(resultColor.release(), eUnit_Color);
|
|
return true;
|
|
}
|
|
case eUnit_CurrentColor: {
|
|
aResultValue.SetCurrentColorValue();
|
|
return true;
|
|
}
|
|
case eUnit_ComplexColor: {
|
|
ComplexColorData color1 = ExtractComplexColor(aValue1);
|
|
ComplexColorData color2 = ExtractComplexColor(aValue2);
|
|
RefPtr<ComplexColorValue> result = new ComplexColorValue;
|
|
// Common case is interpolating between a color and a currentcolor.
|
|
if (color1.IsNumericColor() && color2.IsCurrentColor()) {
|
|
result->mColor = color1.mColor;
|
|
result->mForegroundRatio = aCoeff2;
|
|
} else if (color1.IsCurrentColor() && color2.IsNumericColor()) {
|
|
result->mColor = color2.mColor;
|
|
result->mForegroundRatio = aCoeff1;
|
|
} else {
|
|
float ratio1 = 1.0f - color1.mForegroundRatio;
|
|
float ratio2 = 1.0f - color2.mForegroundRatio;
|
|
float alpha1 = color1.mColor.mA * ratio1;
|
|
float alpha2 = color2.mColor.mA * ratio2;
|
|
RGBAColorData resultColor =
|
|
AddWeightedColors(aCoeff1, color1.mColor.WithAlpha(alpha1),
|
|
aCoeff2, color2.mColor.WithAlpha(alpha2));
|
|
float resultRatio = color1.mForegroundRatio * aCoeff1 +
|
|
color2.mForegroundRatio * aCoeff2;
|
|
float resultAlpha = resultColor.mA / (1.0f - resultRatio);
|
|
result->mColor = resultColor.WithAlpha(resultAlpha);
|
|
result->mForegroundRatio = resultRatio;
|
|
}
|
|
aResultValue.SetComplexColorValue(result.forget());
|
|
return true;
|
|
}
|
|
case eUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(aValue1);
|
|
PixelCalcValue v2 = ExtractCalcValue(aValue2);
|
|
double len = aCoeff1 * v1.mLength + aCoeff2 * v2.mLength;
|
|
double pct = aCoeff1 * v1.mPercent + aCoeff2 * v2.mPercent;
|
|
bool hasPct = (aCoeff1 != 0.0 && v1.mHasPercent) ||
|
|
(aCoeff2 != 0.0 && v2.mHasPercent);
|
|
nsCSSValue *val = new nsCSSValue();
|
|
nsCSSValue::Array *arr = nsCSSValue::Array::Create(1);
|
|
val->SetArrayValue(arr, eCSSUnit_Calc);
|
|
if (hasPct) {
|
|
nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
|
|
arr2->Item(0).SetFloatValue(len, eCSSUnit_Pixel);
|
|
arr2->Item(1).SetPercentValue(pct);
|
|
arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
|
|
} else {
|
|
arr->Item(0).SetFloatValue(len, eCSSUnit_Pixel);
|
|
}
|
|
aResultValue.SetAndAdoptCSSValueValue(val, eUnit_Calc);
|
|
return true;
|
|
}
|
|
case eUnit_ObjectPosition: {
|
|
const nsCSSValue* position1 = aValue1.GetCSSValueValue();
|
|
const nsCSSValue* position2 = aValue2.GetCSSValueValue();
|
|
|
|
nsAutoPtr<nsCSSValue> result(new nsCSSValue);
|
|
AddPositions(aCoeff1, *position1,
|
|
aCoeff2, *position2, *result);
|
|
|
|
aResultValue.SetAndAdoptCSSValueValue(result.forget(),
|
|
eUnit_ObjectPosition);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
Maybe<nsCSSValuePair> result =
|
|
AddCSSValuePair(aProperty, restrictions,
|
|
aCoeff1, aValue1.GetCSSValuePairValue(),
|
|
aCoeff2, aValue2.GetCSSValuePairValue());
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
|
|
// We need a heap allocated object to adopt here:
|
|
auto heapResult = MakeUnique<nsCSSValuePair>(*result);
|
|
aResultValue.SetAndAdoptCSSValuePairValue(heapResult.release(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValueTriplet: {
|
|
nsCSSValueTriplet triplet1(*aValue1.GetCSSValueTripletValue());
|
|
nsCSSValueTriplet triplet2(*aValue2.GetCSSValueTripletValue());
|
|
|
|
nsCSSUnit unit[3];
|
|
unit[0] = GetCommonUnit(aProperty, triplet1.mXValue.GetUnit(),
|
|
triplet2.mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, triplet1.mYValue.GetUnit(),
|
|
triplet2.mYValue.GetUnit());
|
|
unit[2] = GetCommonUnit(aProperty, triplet1.mZValue.GetUnit(),
|
|
triplet2.mZValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[2] == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValueTriplet> result(new nsCSSValueTriplet);
|
|
static nsCSSValue nsCSSValueTriplet::* const tripletValues[3] = {
|
|
&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
|
|
};
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (uint32_t i = 0; i < 3; ++i) {
|
|
nsCSSValue nsCSSValueTriplet::*member = tripletValues[i];
|
|
if (!AddCSSValuePixelPercentCalc(restrictions, unit[i],
|
|
aCoeff1, &triplet1->*member,
|
|
aCoeff2, &triplet2->*member,
|
|
result->*member) ) {
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueTripletValue(result.forget(),
|
|
eUnit_CSSValueTriplet);
|
|
return true;
|
|
}
|
|
case eUnit_CSSRect: {
|
|
MOZ_ASSERT(nsCSSProps::ValueRestrictions(aProperty) == 0,
|
|
"must add code for handling value restrictions");
|
|
const nsCSSRect *rect1 = aValue1.GetCSSRectValue();
|
|
const nsCSSRect *rect2 = aValue2.GetCSSRectValue();
|
|
if (rect1->mTop.GetUnit() != rect2->mTop.GetUnit() ||
|
|
rect1->mRight.GetUnit() != rect2->mRight.GetUnit() ||
|
|
rect1->mBottom.GetUnit() != rect2->mBottom.GetUnit() ||
|
|
rect1->mLeft.GetUnit() != rect2->mLeft.GetUnit()) {
|
|
// At least until we have calc()
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSRect> result(new nsCSSRect);
|
|
for (uint32_t i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
MOZ_ASSERT((rect1->*member).GetUnit() == (rect2->*member).GetUnit(),
|
|
"should have returned above");
|
|
switch ((rect1->*member).GetUnit()) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, rect1->*member, aCoeff2, rect2->*member,
|
|
result->*member);
|
|
break;
|
|
case eCSSUnit_Auto:
|
|
if (float(aCoeff1 + aCoeff2) != 1.0f) {
|
|
// Interpolating between two auto values makes sense;
|
|
// adding in other ratios does not.
|
|
return false;
|
|
}
|
|
(result->*member).SetAutoValue();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSRectValue(result.forget(), eUnit_CSSRect);
|
|
return true;
|
|
}
|
|
case eUnit_Dasharray: {
|
|
const nsCSSValueList *list1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = aValue2.GetCSSValueListValue();
|
|
|
|
uint32_t len1 = 0, len2 = 0;
|
|
for (const nsCSSValueList *v = list1; v; v = v->mNext) {
|
|
++len1;
|
|
}
|
|
for (const nsCSSValueList *v = list2; v; v = v->mNext) {
|
|
++len2;
|
|
}
|
|
MOZ_ASSERT(len1 > 0 && len2 > 0, "unexpected length");
|
|
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = EuclidLCM<uint32_t>(len1, len2); i != i_end; ++i) {
|
|
const nsCSSValue &v1 = list1->mValue;
|
|
const nsCSSValue &v2 = list2->mValue;
|
|
MOZ_ASSERT(v1.GetUnit() == eCSSUnit_Number ||
|
|
v1.GetUnit() == eCSSUnit_Percent, "unexpected");
|
|
MOZ_ASSERT(v2.GetUnit() == eCSSUnit_Number ||
|
|
v2.GetUnit() == eCSSUnit_Percent, "unexpected");
|
|
if (v1.GetUnit() != v2.GetUnit()) {
|
|
// Can't animate between lengths and percentages (until calc()).
|
|
return false;
|
|
}
|
|
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
if (v1.GetUnit() == eCSSUnit_Number) {
|
|
AddCSSValueNumber(aCoeff1, v1, aCoeff2, v2, item->mValue,
|
|
CSS_PROPERTY_VALUE_NONNEGATIVE);
|
|
} else {
|
|
AddCSSValuePercent(aCoeff1, v1, aCoeff2, v2, item->mValue,
|
|
CSS_PROPERTY_VALUE_NONNEGATIVE);
|
|
}
|
|
|
|
list1 = list1->mNext;
|
|
if (!list1) {
|
|
list1 = aValue1.GetCSSValueListValue();
|
|
}
|
|
list2 = list2->mNext;
|
|
if (!list2) {
|
|
list2 = aValue2.GetCSSValueListValue();
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Dasharray);
|
|
return true;
|
|
}
|
|
case eUnit_Shadow: {
|
|
UniquePtr<nsCSSValueList> result =
|
|
AddWeightedShadowList(aCoeff1,
|
|
aValue1.GetCSSValueListValue(),
|
|
aCoeff2,
|
|
aValue2.GetCSSValueListValue(),
|
|
ColorAdditionType::Clamped);
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.release(), eUnit_Shadow);
|
|
return true;
|
|
}
|
|
case eUnit_Shape: {
|
|
RefPtr<nsCSSValue::Array> result =
|
|
AddShapeFunction(aProperty,
|
|
aCoeff1, aValue1.GetCSSValueArrayValue(),
|
|
aCoeff2, aValue2.GetCSSValueArrayValue());
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
aResultValue.SetCSSValueArrayValue(result, eUnit_Shape);
|
|
return true;
|
|
}
|
|
case eUnit_Filter: {
|
|
UniquePtr<nsCSSValueList> result =
|
|
AddWeightedFilterList(aCoeff1, aValue1.GetCSSValueListValue(),
|
|
aCoeff2, aValue2.GetCSSValueListValue(),
|
|
ColorAdditionType::Clamped);
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.release(),
|
|
eUnit_Filter);
|
|
return true;
|
|
}
|
|
|
|
case eUnit_Transform: {
|
|
const nsCSSValueList* list1 = aValue1.GetCSSValueSharedListValue()->mHead;
|
|
const nsCSSValueList* list2 = aValue2.GetCSSValueSharedListValue()->mHead;
|
|
|
|
MOZ_ASSERT(list1);
|
|
MOZ_ASSERT(list2);
|
|
|
|
// We want to avoid the matrix decomposition when we can, since
|
|
// avoiding it can produce better results both for compound
|
|
// transforms and for skew and skewY (see below). We can do this
|
|
// in two cases:
|
|
// (1) if one of the transforms is 'none'
|
|
// (2) if the lists have the same length and the transform
|
|
// functions match
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (list1->mValue.GetUnit() == eCSSUnit_None) {
|
|
if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
result = new nsCSSValueList;
|
|
if (result) {
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
} else {
|
|
result = AddTransformLists(0, list2, aCoeff2, list2);
|
|
}
|
|
} else {
|
|
if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
result = AddTransformLists(0, list1, aCoeff1, list1);
|
|
} else if (TransformFunctionListsMatch(list1, list2)) {
|
|
result = AddTransformLists(aCoeff1, list1, aCoeff2, list2,
|
|
eCSSKeyword_interpolatematrix);
|
|
} else {
|
|
result = AddDifferentTransformLists(aCoeff1, list1,
|
|
aCoeff2, list2,
|
|
eCSSKeyword_interpolatematrix);
|
|
}
|
|
}
|
|
|
|
aResultValue.SetTransformValue(new nsCSSValueSharedList(result.forget()));
|
|
return true;
|
|
}
|
|
case eUnit_BackgroundPositionCoord: {
|
|
const nsCSSValueList *position1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *position2 = aValue2.GetCSSValueListValue();
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
while (position1 && position2) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
AddPositionCoords(aCoeff1, position1->mValue,
|
|
aCoeff2, position2->mValue, item->mValue);
|
|
|
|
position1 = position1->mNext;
|
|
position2 = position2->mNext;
|
|
}
|
|
|
|
// Check for different lengths
|
|
if (position1 || position2) {
|
|
return false;
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_BackgroundPositionCoord);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePairList: {
|
|
const nsCSSValuePairList *list1 = aValue1.GetCSSValuePairListValue();
|
|
const nsCSSValuePairList *list2 = aValue2.GetCSSValuePairListValue();
|
|
UniquePtr<nsCSSValuePairList> result =
|
|
AddCSSValuePairList(aProperty, aCoeff1, list1, aCoeff2, list2);
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
aResultValue.SetAndAdoptCSSValuePairListValue(result.release());
|
|
return true;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(false, "Can't interpolate using the given common unit");
|
|
return false;
|
|
}
|
|
|
|
StyleAnimationValue
|
|
StyleAnimationValue::Accumulate(nsCSSPropertyID aProperty,
|
|
const StyleAnimationValue& aA,
|
|
StyleAnimationValue&& aB,
|
|
uint64_t aCount)
|
|
{
|
|
StyleAnimationValue result(Move(aB));
|
|
|
|
if (aCount == 0) {
|
|
return result;
|
|
}
|
|
|
|
Unit commonUnit =
|
|
GetCommonUnit(aProperty, result.GetUnit(), aA.GetUnit());
|
|
switch (commonUnit) {
|
|
case eUnit_Filter: {
|
|
UniquePtr<nsCSSValueList> resultList =
|
|
AddWeightedFilterList(1.0, result.GetCSSValueListValue(),
|
|
aCount, aA.GetCSSValueListValue(),
|
|
ColorAdditionType::Unclamped);
|
|
if (resultList) {
|
|
result.SetAndAdoptCSSValueListValue(resultList.release(), eUnit_Filter);
|
|
}
|
|
break;
|
|
}
|
|
case eUnit_Shadow: {
|
|
UniquePtr<nsCSSValueList> resultList =
|
|
AddWeightedShadowList(1.0, result.GetCSSValueListValue(),
|
|
aCount, aA.GetCSSValueListValue(),
|
|
ColorAdditionType::Unclamped);
|
|
if (resultList) {
|
|
result.SetAndAdoptCSSValueListValue(resultList.release(), eUnit_Shadow);
|
|
}
|
|
break;
|
|
}
|
|
case eUnit_Color: {
|
|
RGBAColorData color1 = ExtractColor(result);
|
|
RGBAColorData color2 = ExtractColor(aA);
|
|
auto resultColor = MakeUnique<nsCSSValue>();
|
|
resultColor->SetRGBAColorValue(
|
|
AddWeightedColors(1.0, color1, aCount, color2));
|
|
result.SetAndAdoptCSSValueValue(resultColor.release(), eUnit_Color);
|
|
break;
|
|
}
|
|
case eUnit_Transform: {
|
|
const nsCSSValueList* listA =
|
|
aA.GetCSSValueSharedListValue()->mHead;
|
|
const nsCSSValueList* listB =
|
|
result.GetCSSValueSharedListValue()->mHead;
|
|
|
|
MOZ_ASSERT(listA);
|
|
MOZ_ASSERT(listB);
|
|
|
|
nsAutoPtr<nsCSSValueList> resultList;
|
|
if (listA->mValue.GetUnit() == eCSSUnit_None ||
|
|
listB->mValue.GetUnit() == eCSSUnit_None) {
|
|
break;
|
|
} else if (TransformFunctionListsMatch(listA, listB)) {
|
|
resultList = AddTransformLists(1.0, listB, aCount, listA,
|
|
eCSSKeyword_accumulatematrix);
|
|
} else {
|
|
resultList = AddDifferentTransformLists(1.0, listB,
|
|
aCount, listA,
|
|
eCSSKeyword_accumulatematrix);
|
|
}
|
|
result.SetTransformValue(new nsCSSValueSharedList(resultList.forget()));
|
|
break;
|
|
}
|
|
default:
|
|
Unused << AddWeighted(aProperty,
|
|
1.0, result,
|
|
aCount, aA,
|
|
result);
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
already_AddRefed<css::StyleRule>
|
|
BuildStyleRule(nsCSSPropertyID aProperty,
|
|
dom::Element* aTargetElement,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode)
|
|
{
|
|
// Set up an empty CSS Declaration
|
|
RefPtr<css::Declaration> declaration(new css::Declaration());
|
|
declaration->InitializeEmpty();
|
|
|
|
bool changed; // ignored, but needed as outparam for ParseProperty
|
|
nsIDocument* doc = aTargetElement->OwnerDoc();
|
|
nsCOMPtr<nsIURI> baseURI = aTargetElement->GetBaseURI();
|
|
nsCSSParser parser(doc->CSSLoader());
|
|
|
|
nsCSSPropertyID propertyToCheck = nsCSSProps::IsShorthand(aProperty) ?
|
|
nsCSSProps::SubpropertyEntryFor(aProperty)[0] : aProperty;
|
|
|
|
// Get a parser, parse the property, and check for CSS parsing errors.
|
|
// If this fails, we bail out and delete the declaration.
|
|
parser.ParseProperty(aProperty, aSpecifiedValue, doc->GetDocumentURI(),
|
|
baseURI, aTargetElement->NodePrincipal(), declaration,
|
|
&changed, false, aUseSVGMode);
|
|
|
|
// check whether property parsed without CSS parsing errors
|
|
if (!declaration->HasNonImportantValueFor(propertyToCheck)) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<css::StyleRule> rule = new css::StyleRule(nullptr,
|
|
declaration,
|
|
0, 0);
|
|
return rule.forget();
|
|
}
|
|
|
|
already_AddRefed<css::StyleRule>
|
|
BuildStyleRule(nsCSSPropertyID aProperty,
|
|
dom::Element* aTargetElement,
|
|
const nsCSSValue& aSpecifiedValue,
|
|
bool aUseSVGMode)
|
|
{
|
|
MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
|
|
"Should be a longhand property");
|
|
|
|
// Check if longhand failed to parse correctly.
|
|
if (aSpecifiedValue.GetUnit() == eCSSUnit_Null) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Set up an empty CSS Declaration
|
|
RefPtr<css::Declaration> declaration(new css::Declaration());
|
|
declaration->InitializeEmpty();
|
|
|
|
// Add our longhand value
|
|
nsCSSExpandedDataBlock block;
|
|
declaration->ExpandTo(&block);
|
|
block.AddLonghandProperty(aProperty, aSpecifiedValue);
|
|
declaration->ValueAppended(aProperty);
|
|
declaration->CompressFrom(&block);
|
|
|
|
RefPtr<css::StyleRule> rule = new css::StyleRule(nullptr, declaration, 0, 0);
|
|
return rule.forget();
|
|
}
|
|
|
|
static bool
|
|
ComputeValuesFromStyleContext(
|
|
nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
nsStyleContext* aStyleContext,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aValues)
|
|
{
|
|
// Extract computed value of our property (or all longhand components, if
|
|
// aProperty is a shorthand) from the temporary style context
|
|
if (nsCSSProps::IsShorthand(aProperty)) {
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty, aEnabledState) {
|
|
if (nsCSSProps::kAnimTypeTable[*p] == eStyleAnimType_None) {
|
|
// Skip non-animatable component longhands.
|
|
continue;
|
|
}
|
|
PropertyStyleAnimationValuePair* pair = aValues.AppendElement();
|
|
pair->mProperty = *p;
|
|
if (!StyleAnimationValue::ExtractComputedValue(*p, aStyleContext,
|
|
pair->mValue)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
PropertyStyleAnimationValuePair* pair = aValues.AppendElement();
|
|
pair->mProperty = aProperty;
|
|
return StyleAnimationValue::ExtractComputedValue(aProperty, aStyleContext,
|
|
pair->mValue);
|
|
}
|
|
|
|
static bool
|
|
ComputeValuesFromStyleRule(nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
nsStyleContext* aStyleContext,
|
|
css::StyleRule* aStyleRule,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aValues,
|
|
bool* aIsContextSensitive)
|
|
{
|
|
MOZ_ASSERT(aStyleContext);
|
|
if (!nsCSSProps::IsEnabled(aProperty, aEnabledState)) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(aStyleContext->PresContext()->StyleSet()->IsGecko(),
|
|
"ServoStyleSet should not use StyleAnimationValue for animations");
|
|
nsStyleSet* styleSet = aStyleContext->PresContext()->StyleSet()->AsGecko();
|
|
|
|
RefPtr<nsStyleContext> tmpStyleContext;
|
|
if (aIsContextSensitive) {
|
|
MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
|
|
"to correctly set aIsContextSensitive for shorthand properties, "
|
|
"this code must be adjusted");
|
|
|
|
nsCOMArray<nsIStyleRule> ruleArray;
|
|
ruleArray.AppendObject(styleSet->InitialStyleRule());
|
|
css::Declaration* declaration = aStyleRule->GetDeclaration();
|
|
ruleArray.AppendObject(declaration);
|
|
declaration->SetImmutable();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(aStyleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
|
|
// Force walk of rule tree
|
|
nsStyleStructID sid = nsCSSProps::kSIDTable[aProperty];
|
|
tmpStyleContext->StyleData(sid);
|
|
|
|
// The rule node will have unconditional cached style data if the value is
|
|
// not context-sensitive. So if there's nothing cached, it's not context
|
|
// sensitive.
|
|
*aIsContextSensitive =
|
|
!tmpStyleContext->RuleNode()->NodeHasCachedUnconditionalData(sid);
|
|
}
|
|
|
|
// If we're not concerned whether the property is context sensitive then just
|
|
// add the rule to a new temporary style context alongside the target
|
|
// element's style context.
|
|
// Also, if we previously discovered that this property IS context-sensitive
|
|
// then we need to throw the temporary style context out since the property's
|
|
// value may have been biased by the 'initial' values supplied.
|
|
if (!aIsContextSensitive || *aIsContextSensitive) {
|
|
nsCOMArray<nsIStyleRule> ruleArray;
|
|
css::Declaration* declaration = aStyleRule->GetDeclaration();
|
|
ruleArray.AppendObject(declaration);
|
|
declaration->SetImmutable();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(aStyleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return ComputeValuesFromStyleContext(aProperty, aEnabledState,
|
|
tmpStyleContext, aValues);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValue(nsCSSPropertyID aProperty,
|
|
dom::Element* aTargetElement,
|
|
nsStyleContext* aStyleContext,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
StyleAnimationValue& aComputedValue,
|
|
bool* aIsContextSensitive)
|
|
{
|
|
MOZ_ASSERT(aTargetElement, "null target element");
|
|
|
|
// Parse specified value into a temporary css::StyleRule
|
|
// Note: BuildStyleRule needs an element's OwnerDoc, BaseURI, and Principal.
|
|
// If it is a pseudo element, use its parent element's OwnerDoc, BaseURI,
|
|
// and Principal.
|
|
RefPtr<css::StyleRule> styleRule =
|
|
BuildStyleRule(aProperty, aTargetElement, aSpecifiedValue, aUseSVGMode);
|
|
if (!styleRule) {
|
|
return false;
|
|
}
|
|
|
|
if (nsCSSProps::IsShorthand(aProperty) ||
|
|
nsCSSProps::kAnimTypeTable[aProperty] == eStyleAnimType_None) {
|
|
// Just capture the specified value
|
|
aComputedValue.SetUnparsedStringValue(nsString(aSpecifiedValue));
|
|
if (aIsContextSensitive) {
|
|
// Since we're just returning the string as-is, aComputedValue isn't going
|
|
// to change depending on the context
|
|
*aIsContextSensitive = false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
AutoTArray<PropertyStyleAnimationValuePair,1> values;
|
|
bool ok = ComputeValuesFromStyleRule(aProperty,
|
|
CSSEnabledState::eIgnoreEnabledState,
|
|
aStyleContext, styleRule,
|
|
values, aIsContextSensitive);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(values.Length() == 1);
|
|
MOZ_ASSERT(values[0].mProperty == aProperty);
|
|
|
|
aComputedValue = values[0].mValue;
|
|
return true;
|
|
}
|
|
|
|
template <class T>
|
|
bool
|
|
ComputeValuesFromSpecifiedValue(
|
|
nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
dom::Element* aTargetElement,
|
|
nsStyleContext* aStyleContext,
|
|
T& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aResult)
|
|
{
|
|
MOZ_ASSERT(aTargetElement, "null target element");
|
|
|
|
// Parse specified value into a temporary css::StyleRule
|
|
// Note: BuildStyleRule needs an element's OwnerDoc, BaseURI, and Principal.
|
|
// If it is a pseudo element, use its parent element's OwnerDoc, BaseURI,
|
|
// and Principal.
|
|
RefPtr<css::StyleRule> styleRule =
|
|
BuildStyleRule(aProperty, aTargetElement, aSpecifiedValue, aUseSVGMode);
|
|
if (!styleRule) {
|
|
return false;
|
|
}
|
|
|
|
aResult.Clear();
|
|
return ComputeValuesFromStyleRule(aProperty, aEnabledState,
|
|
aStyleContext, styleRule, aResult,
|
|
/* aIsContextSensitive */ nullptr);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValues(
|
|
nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
dom::Element* aTargetElement,
|
|
nsStyleContext* aStyleContext,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aResult)
|
|
{
|
|
return ComputeValuesFromSpecifiedValue(aProperty, aEnabledState,
|
|
aTargetElement, aStyleContext,
|
|
aSpecifiedValue, aUseSVGMode,
|
|
aResult);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValues(
|
|
nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
dom::Element* aTargetElement,
|
|
nsStyleContext* aStyleContext,
|
|
const nsCSSValue& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aResult)
|
|
{
|
|
return ComputeValuesFromSpecifiedValue(aProperty, aEnabledState,
|
|
aTargetElement, aStyleContext,
|
|
aSpecifiedValue, aUseSVGMode,
|
|
aResult);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValues(
|
|
nsCSSPropertyID aProperty,
|
|
CSSEnabledState aEnabledState,
|
|
nsStyleContext* aStyleContext,
|
|
const RawServoDeclarationBlock& aDeclarations,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aValues)
|
|
{
|
|
MOZ_ASSERT(aStyleContext->PresContext()->StyleSet()->IsServo(),
|
|
"Should be using ServoStyleSet if we have a"
|
|
" RawServoDeclarationBlock");
|
|
|
|
if (!nsCSSProps::IsEnabled(aProperty, aEnabledState)) {
|
|
return false;
|
|
}
|
|
|
|
const ServoComputedValues* previousStyle =
|
|
aStyleContext->StyleSource().AsServoComputedValues();
|
|
|
|
// FIXME: Servo bindings don't yet represent const-ness so we just
|
|
// cast it away for now.
|
|
auto declarations = const_cast<RawServoDeclarationBlock*>(&aDeclarations);
|
|
RefPtr<ServoComputedValues> computedValues =
|
|
Servo_RestyleWithAddedDeclaration(declarations, previousStyle).Consume();
|
|
if (!computedValues) {
|
|
return false;
|
|
}
|
|
|
|
RefPtr<nsStyleContext> tmpStyleContext =
|
|
NS_NewStyleContext(aStyleContext, aStyleContext->PresContext(),
|
|
aStyleContext->GetPseudo(),
|
|
aStyleContext->GetPseudoType(),
|
|
computedValues.forget(),
|
|
false /* skipFixup */);
|
|
|
|
return ComputeValuesFromStyleContext(aProperty, aEnabledState,
|
|
tmpStyleContext, aValues);
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::UncomputeValue(nsCSSPropertyID aProperty,
|
|
const StyleAnimationValue& aComputedValue,
|
|
nsCSSValue& aSpecifiedValue)
|
|
{
|
|
Unit unit = aComputedValue.GetUnit();
|
|
switch (unit) {
|
|
case eUnit_Normal:
|
|
aSpecifiedValue.SetNormalValue();
|
|
break;
|
|
case eUnit_Auto:
|
|
aSpecifiedValue.SetAutoValue();
|
|
break;
|
|
case eUnit_None:
|
|
aSpecifiedValue.SetNoneValue();
|
|
break;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
aSpecifiedValue.
|
|
SetIntValue(aComputedValue.GetIntValue(), eCSSUnit_Enumerated);
|
|
break;
|
|
case eUnit_Integer:
|
|
aSpecifiedValue.
|
|
SetIntValue(aComputedValue.GetIntValue(), eCSSUnit_Integer);
|
|
break;
|
|
case eUnit_Coord:
|
|
aSpecifiedValue.SetIntegerCoordValue(aComputedValue.GetCoordValue());
|
|
break;
|
|
case eUnit_Percent:
|
|
aSpecifiedValue.SetPercentValue(aComputedValue.GetPercentValue());
|
|
break;
|
|
case eUnit_Float:
|
|
aSpecifiedValue.
|
|
SetFloatValue(aComputedValue.GetFloatValue(), eCSSUnit_Number);
|
|
break;
|
|
case eUnit_CurrentColor:
|
|
aSpecifiedValue.SetIntValue(NS_COLOR_CURRENTCOLOR, eCSSUnit_EnumColor);
|
|
break;
|
|
case eUnit_Calc:
|
|
case eUnit_Color:
|
|
case eUnit_ObjectPosition:
|
|
case eUnit_URL:
|
|
case eUnit_DiscreteCSSValue: {
|
|
nsCSSValue* val = aComputedValue.GetCSSValueValue();
|
|
// Sanity-check that the underlying unit in the nsCSSValue is what we
|
|
// expect for our StyleAnimationValue::Unit:
|
|
MOZ_ASSERT((unit == eUnit_Calc && val->GetUnit() == eCSSUnit_Calc) ||
|
|
(unit == eUnit_Color &&
|
|
nsCSSValue::IsNumericColorUnit(val->GetUnit())) ||
|
|
(unit == eUnit_ObjectPosition &&
|
|
val->GetUnit() == eCSSUnit_Array) ||
|
|
(unit == eUnit_URL && val->GetUnit() == eCSSUnit_URL) ||
|
|
unit == eUnit_DiscreteCSSValue,
|
|
"unexpected unit");
|
|
aSpecifiedValue = *val;
|
|
break;
|
|
}
|
|
case eUnit_ComplexColor: {
|
|
aSpecifiedValue.SetComplexColorValue(
|
|
do_AddRef(aComputedValue.mValue.mComplexColor));
|
|
break;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
// Rule node processing expects pair values to be collapsed to a
|
|
// single value if both halves would be equal, for most but not
|
|
// all properties. At present, all animatable properties that
|
|
// use pairs do expect collapsing.
|
|
const nsCSSValuePair* pair = aComputedValue.GetCSSValuePairValue();
|
|
if (pair->mXValue == pair->mYValue) {
|
|
aSpecifiedValue = pair->mXValue;
|
|
} else {
|
|
aSpecifiedValue.SetPairValue(pair);
|
|
}
|
|
} break;
|
|
case eUnit_CSSValueTriplet: {
|
|
// Rule node processing expects triplet values to be collapsed to a
|
|
// single value if both halves would be equal, for most but not
|
|
// all properties. At present, all animatable properties that
|
|
// use pairs do expect collapsing.
|
|
const nsCSSValueTriplet* triplet = aComputedValue.GetCSSValueTripletValue();
|
|
if (triplet->mXValue == triplet->mYValue && triplet->mYValue == triplet->mZValue) {
|
|
aSpecifiedValue = triplet->mXValue;
|
|
} else {
|
|
aSpecifiedValue.SetTripletValue(triplet);
|
|
}
|
|
} break;
|
|
case eUnit_CSSRect: {
|
|
nsCSSRect& rect = aSpecifiedValue.SetRectValue();
|
|
rect = *aComputedValue.GetCSSRectValue();
|
|
} break;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPositionCoord:
|
|
{
|
|
nsCSSValueList* computedList = aComputedValue.GetCSSValueListValue();
|
|
if (computedList) {
|
|
aSpecifiedValue.SetDependentListValue(computedList);
|
|
} else {
|
|
aSpecifiedValue.SetNoneValue();
|
|
}
|
|
}
|
|
break;
|
|
case eUnit_Shape: {
|
|
nsCSSValue::Array* computedArray = aComputedValue.GetCSSValueArrayValue();
|
|
aSpecifiedValue.SetArrayValue(computedArray, eCSSUnit_Array);
|
|
break;
|
|
}
|
|
case eUnit_Transform:
|
|
aSpecifiedValue.
|
|
SetSharedListValue(aComputedValue.GetCSSValueSharedListValue());
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
aSpecifiedValue.
|
|
SetDependentPairListValue(aComputedValue.GetCSSValuePairListValue());
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::UncomputeValue(nsCSSPropertyID aProperty,
|
|
StyleAnimationValue&& aComputedValue,
|
|
nsCSSValue& aSpecifiedValue)
|
|
{
|
|
Unit unit = aComputedValue.GetUnit();
|
|
switch (unit) {
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPositionCoord:
|
|
{
|
|
UniquePtr<nsCSSValueList> computedList =
|
|
aComputedValue.TakeCSSValueListValue();
|
|
if (computedList) {
|
|
aSpecifiedValue.AdoptListValue(Move(computedList));
|
|
} else {
|
|
aSpecifiedValue.SetNoneValue();
|
|
}
|
|
}
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
{
|
|
UniquePtr<nsCSSValuePairList> computedList =
|
|
aComputedValue.TakeCSSValuePairListValue();
|
|
MOZ_ASSERT(computedList, "Pair list should never be null");
|
|
aSpecifiedValue.AdoptPairListValue(Move(computedList));
|
|
}
|
|
break;
|
|
default:
|
|
return UncomputeValue(aProperty, aComputedValue, aSpecifiedValue);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::UncomputeValue(nsCSSPropertyID aProperty,
|
|
const StyleAnimationValue& aComputedValue,
|
|
nsAString& aSpecifiedValue)
|
|
{
|
|
aSpecifiedValue.Truncate(); // Clear outparam, if it's not already empty
|
|
|
|
if (aComputedValue.GetUnit() == eUnit_UnparsedString) {
|
|
aComputedValue.GetStringValue(aSpecifiedValue);
|
|
return true;
|
|
}
|
|
nsCSSValue val;
|
|
if (!StyleAnimationValue::UncomputeValue(aProperty, aComputedValue, val)) {
|
|
return false;
|
|
}
|
|
|
|
val.AppendToString(aProperty, aSpecifiedValue, nsCSSValue::eNormalized);
|
|
return true;
|
|
}
|
|
|
|
template<typename T>
|
|
inline const T&
|
|
StyleDataAtOffset(const void* aStyleStruct, ptrdiff_t aOffset)
|
|
{
|
|
return *reinterpret_cast<const T*>(
|
|
reinterpret_cast<const uint8_t*>(aStyleStruct) + aOffset);
|
|
}
|
|
|
|
static bool
|
|
StyleCoordToValue(const nsStyleCoord& aCoord, StyleAnimationValue& aValue)
|
|
{
|
|
switch (aCoord.GetUnit()) {
|
|
case eStyleUnit_Normal:
|
|
aValue.SetNormalValue();
|
|
break;
|
|
case eStyleUnit_Auto:
|
|
aValue.SetAutoValue();
|
|
break;
|
|
case eStyleUnit_None:
|
|
aValue.SetNoneValue();
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
aValue.SetPercentValue(aCoord.GetPercentValue());
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
aValue.SetFloatValue(aCoord.GetFactorValue());
|
|
break;
|
|
case eStyleUnit_Coord:
|
|
aValue.SetCoordValue(aCoord.GetCoordValue());
|
|
break;
|
|
case eStyleUnit_Enumerated:
|
|
aValue.SetIntValue(aCoord.GetIntValue(),
|
|
StyleAnimationValue::eUnit_Enumerated);
|
|
break;
|
|
case eStyleUnit_Integer:
|
|
aValue.SetIntValue(aCoord.GetIntValue(),
|
|
StyleAnimationValue::eUnit_Integer);
|
|
break;
|
|
case eStyleUnit_Calc: {
|
|
nsAutoPtr<nsCSSValue> val(new nsCSSValue);
|
|
CalcValueToCSSValue(aCoord.GetCalcValue(), *val);
|
|
aValue.SetAndAdoptCSSValueValue(val.forget(),
|
|
StyleAnimationValue::eUnit_Calc);
|
|
break;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
StyleCoordToCSSValue(const nsStyleCoord& aCoord, nsCSSValue& aCSSValue)
|
|
{
|
|
switch (aCoord.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
aCSSValue.SetIntegerCoordValue(aCoord.GetCoordValue());
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
aCSSValue.SetFloatValue(aCoord.GetFactorValue(), eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
aCSSValue.SetPercentValue(aCoord.GetPercentValue());
|
|
break;
|
|
case eStyleUnit_Calc:
|
|
CalcValueToCSSValue(aCoord.GetCalcValue(), aCSSValue);
|
|
break;
|
|
case eStyleUnit_Degree:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Degree);
|
|
break;
|
|
case eStyleUnit_Grad:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Grad);
|
|
break;
|
|
case eStyleUnit_Radian:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Radian);
|
|
break;
|
|
case eStyleUnit_Turn:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Turn);
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
SetPositionValue(const Position& aPos, nsCSSValue& aCSSValue)
|
|
{
|
|
RefPtr<nsCSSValue::Array> posArray = nsCSSValue::Array::Create(4);
|
|
aCSSValue.SetArrayValue(posArray.get(), eCSSUnit_Array);
|
|
|
|
// NOTE: Array entries #0 and #2 here are intentionally left untouched, with
|
|
// eCSSUnit_Null. The purpose of these entries in our specified-style
|
|
// <position> representation is to store edge names. But for values
|
|
// extracted from computed style (which is what we're dealing with here),
|
|
// we'll just have a normalized "x,y" position, with no edge names needed.
|
|
nsCSSValue& xValue = posArray->Item(1);
|
|
nsCSSValue& yValue = posArray->Item(3);
|
|
|
|
CalcValueToCSSValue(&aPos.mXPosition, xValue);
|
|
CalcValueToCSSValue(&aPos.mYPosition, yValue);
|
|
}
|
|
|
|
static void
|
|
SetPositionCoordValue(const Position::Coord& aPosCoord,
|
|
nsCSSValue& aCSSValue)
|
|
{
|
|
RefPtr<nsCSSValue::Array> posArray = nsCSSValue::Array::Create(2);
|
|
aCSSValue.SetArrayValue(posArray.get(), eCSSUnit_Array);
|
|
|
|
// NOTE: Array entry #0 here is intentionally left untouched, with
|
|
// eCSSUnit_Null. The purpose of this entry in our specified-style
|
|
// <position-coord> representation is to store edge names. But for values
|
|
// extracted from computed style (which is what we're dealing with here),
|
|
// we'll just have a normalized "x"/"y" position, with no edge names needed.
|
|
nsCSSValue& value = posArray->Item(1);
|
|
|
|
CalcValueToCSSValue(&aPosCoord, value);
|
|
}
|
|
|
|
/*
|
|
* Assign |aOutput = aInput|, except with any non-pixel lengths
|
|
* replaced with the equivalent in pixels, and any non-canonical calc()
|
|
* expressions replaced with canonical ones.
|
|
*/
|
|
static void
|
|
SubstitutePixelValues(nsStyleContext* aStyleContext,
|
|
const nsCSSValue& aInput, nsCSSValue& aOutput)
|
|
{
|
|
if (aInput.IsCalcUnit()) {
|
|
RuleNodeCacheConditions conditions;
|
|
nsRuleNode::ComputedCalc c =
|
|
nsRuleNode::SpecifiedCalcToComputedCalc(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
conditions);
|
|
nsStyleCoord::CalcValue c2;
|
|
c2.mLength = c.mLength;
|
|
c2.mPercent = c.mPercent;
|
|
c2.mHasPercent = true; // doesn't matter for transform translate
|
|
CalcValueToCSSValue(&c2, aOutput);
|
|
} else if (aInput.UnitHasArrayValue()) {
|
|
const nsCSSValue::Array *inputArray = aInput.GetArrayValue();
|
|
RefPtr<nsCSSValue::Array> outputArray =
|
|
nsCSSValue::Array::Create(inputArray->Count());
|
|
for (size_t i = 0, i_end = inputArray->Count(); i < i_end; ++i) {
|
|
SubstitutePixelValues(aStyleContext,
|
|
inputArray->Item(i), outputArray->Item(i));
|
|
}
|
|
aOutput.SetArrayValue(outputArray, aInput.GetUnit());
|
|
} else if (aInput.IsLengthUnit() &&
|
|
aInput.GetUnit() != eCSSUnit_Pixel) {
|
|
RuleNodeCacheConditions conditions;
|
|
nscoord len = nsRuleNode::CalcLength(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
conditions);
|
|
aOutput.SetFloatValue(nsPresContext::AppUnitsToFloatCSSPixels(len),
|
|
eCSSUnit_Pixel);
|
|
} else {
|
|
aOutput = aInput;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ExtractImageLayerPositionXList(const nsStyleImageLayers& aLayer,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
MOZ_ASSERT(aLayer.mPositionXCount > 0, "unexpected count");
|
|
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = aLayer.mPositionXCount; i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
SetPositionCoordValue(aLayer.mLayers[i].mPosition.mXPosition,
|
|
item->mValue);
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
StyleAnimationValue::eUnit_BackgroundPositionCoord);
|
|
}
|
|
|
|
static void
|
|
ExtractImageLayerPositionYList(const nsStyleImageLayers& aLayer,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
MOZ_ASSERT(aLayer.mPositionYCount > 0, "unexpected count");
|
|
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = aLayer.mPositionYCount; i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
SetPositionCoordValue(aLayer.mLayers[i].mPosition.mYPosition,
|
|
item->mValue);
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
StyleAnimationValue::eUnit_BackgroundPositionCoord);
|
|
}
|
|
|
|
static void
|
|
ExtractImageLayerSizePairList(const nsStyleImageLayers& aLayer,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
MOZ_ASSERT(aLayer.mSizeCount > 0, "unexpected count");
|
|
|
|
nsAutoPtr<nsCSSValuePairList> result;
|
|
nsCSSValuePairList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = aLayer.mSizeCount; i != i_end; ++i) {
|
|
nsCSSValuePairList *item = new nsCSSValuePairList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
const nsStyleImageLayers::Size &size = aLayer.mLayers[i].mSize;
|
|
switch (size.mWidthType) {
|
|
case nsStyleImageLayers::Size::eContain:
|
|
case nsStyleImageLayers::Size::eCover:
|
|
item->mXValue.SetIntValue(size.mWidthType,
|
|
eCSSUnit_Enumerated);
|
|
break;
|
|
case nsStyleImageLayers::Size::eAuto:
|
|
item->mXValue.SetAutoValue();
|
|
break;
|
|
case nsStyleImageLayers::Size::eLengthPercentage:
|
|
// XXXbz is there a good reason we can't just
|
|
// CalcValueToCSSValue(&size.mWidth, item->mXValue) here?
|
|
if (!size.mWidth.mHasPercent &&
|
|
// negative values must have come from calc()
|
|
size.mWidth.mLength >= 0) {
|
|
MOZ_ASSERT(size.mWidth.mPercent == 0.0f,
|
|
"Shouldn't have mPercent");
|
|
item->mXValue.SetIntegerCoordValue(size.mWidth.mLength);
|
|
} else if (size.mWidth.mLength == 0 &&
|
|
// negative values must have come from calc()
|
|
size.mWidth.mPercent >= 0.0f) {
|
|
item->mXValue.SetPercentValue(size.mWidth.mPercent);
|
|
} else {
|
|
CalcValueToCSSValue(&size.mWidth, item->mXValue);
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch (size.mHeightType) {
|
|
case nsStyleImageLayers::Size::eContain:
|
|
case nsStyleImageLayers::Size::eCover:
|
|
// leave it null
|
|
break;
|
|
case nsStyleImageLayers::Size::eAuto:
|
|
item->mYValue.SetAutoValue();
|
|
break;
|
|
case nsStyleImageLayers::Size::eLengthPercentage:
|
|
// XXXbz is there a good reason we can't just
|
|
// CalcValueToCSSValue(&size.mHeight, item->mYValue) here?
|
|
if (!size.mHeight.mHasPercent &&
|
|
// negative values must have come from calc()
|
|
size.mHeight.mLength >= 0) {
|
|
MOZ_ASSERT(size.mHeight.mPercent == 0.0f,
|
|
"Shouldn't have mPercent");
|
|
item->mYValue.SetIntegerCoordValue(size.mHeight.mLength);
|
|
} else if (size.mHeight.mLength == 0 &&
|
|
// negative values must have come from calc()
|
|
size.mHeight.mPercent >= 0.0f) {
|
|
item->mYValue.SetPercentValue(size.mHeight.mPercent);
|
|
} else {
|
|
CalcValueToCSSValue(&size.mHeight, item->mYValue);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValuePairListValue(result.forget());
|
|
}
|
|
|
|
static bool
|
|
StyleClipBasicShapeToCSSArray(const StyleClipPath& aClipPath,
|
|
nsCSSValue::Array* aResult)
|
|
{
|
|
MOZ_ASSERT(aResult->Count() == 2,
|
|
"Expected array to be presized for a function and the sizing-box");
|
|
|
|
const StyleBasicShape* shape = aClipPath.GetBasicShape();
|
|
nsCSSKeyword functionName = shape->GetShapeTypeName();
|
|
RefPtr<nsCSSValue::Array> functionArray;
|
|
switch (shape->GetShapeType()) {
|
|
case StyleBasicShapeType::Circle:
|
|
case StyleBasicShapeType::Ellipse: {
|
|
const nsTArray<nsStyleCoord>& coords = shape->Coordinates();
|
|
MOZ_ASSERT(coords.Length() == ShapeArgumentCount(functionName) - 1,
|
|
"Unexpected radii count");
|
|
// The "+1" is for the center point:
|
|
functionArray = aResult->Item(0).InitFunction(functionName,
|
|
coords.Length() + 1);
|
|
for (size_t i = 0; i < coords.Length(); ++i) {
|
|
if (coords[i].GetUnit() == eStyleUnit_Enumerated) {
|
|
functionArray->Item(i + 1).SetIntValue(coords[i].GetIntValue(),
|
|
eCSSUnit_Enumerated);
|
|
} else if (!StyleCoordToCSSValue(coords[i],
|
|
functionArray->Item(i + 1))) {
|
|
return false;
|
|
}
|
|
}
|
|
// Set functionArray's last item to the circle or ellipse's center point:
|
|
SetPositionValue(shape->GetPosition(),
|
|
functionArray->Item(functionArray->Count() - 1));
|
|
break;
|
|
}
|
|
case StyleBasicShapeType::Polygon: {
|
|
functionArray =
|
|
aResult->Item(0).InitFunction(functionName,
|
|
ShapeArgumentCount(functionName));
|
|
functionArray->Item(1).SetIntValue(shape->GetFillRule(),
|
|
eCSSUnit_Enumerated);
|
|
nsCSSValuePairList* list = functionArray->Item(2).SetPairListValue();
|
|
const nsTArray<nsStyleCoord>& coords = shape->Coordinates();
|
|
MOZ_ASSERT((coords.Length() % 2) == 0);
|
|
for (size_t i = 0; i < coords.Length(); i += 2) {
|
|
if (i > 0) {
|
|
list->mNext = new nsCSSValuePairList;
|
|
list = list->mNext;
|
|
}
|
|
if (!StyleCoordToCSSValue(coords[i], list->mXValue) ||
|
|
!StyleCoordToCSSValue(coords[i + 1], list->mYValue)) {
|
|
return false;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case StyleBasicShapeType::Inset: {
|
|
const nsTArray<nsStyleCoord>& coords = shape->Coordinates();
|
|
MOZ_ASSERT(coords.Length() == ShapeArgumentCount(functionName) - 1,
|
|
"Unexpected offset count");
|
|
functionArray =
|
|
aResult->Item(0).InitFunction(functionName, coords.Length() + 1);
|
|
for (size_t i = 0; i < coords.Length(); ++i) {
|
|
if (!StyleCoordToCSSValue(coords[i], functionArray->Item(i + 1))) {
|
|
return false;
|
|
}
|
|
}
|
|
RefPtr<nsCSSValue::Array> radiusArray = nsCSSValue::Array::Create(4);
|
|
const nsStyleCorners& radii = shape->GetRadius();
|
|
NS_FOR_CSS_FULL_CORNERS(corner) {
|
|
auto pair = MakeUnique<nsCSSValuePair>();
|
|
if (!StyleCoordToCSSValue(radii.Get(NS_FULL_TO_HALF_CORNER(corner, false)),
|
|
pair->mXValue) ||
|
|
!StyleCoordToCSSValue(radii.Get(NS_FULL_TO_HALF_CORNER(corner, true)),
|
|
pair->mYValue)) {
|
|
return false;
|
|
}
|
|
radiusArray->Item(corner).SetPairValue(pair.get());
|
|
}
|
|
// Set the last item in functionArray to the radius array:
|
|
functionArray->Item(functionArray->Count() - 1).
|
|
SetArrayValue(radiusArray, eCSSUnit_Array);
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown shape type");
|
|
return false;
|
|
}
|
|
aResult->Item(1).SetIntValue(aClipPath.GetReferenceBox(),
|
|
eCSSUnit_Enumerated);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::ExtractComputedValue(nsCSSPropertyID aProperty,
|
|
nsStyleContext* aStyleContext,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"bad property");
|
|
const void* styleStruct =
|
|
aStyleContext->StyleData(nsCSSProps::kSIDTable[aProperty]);
|
|
ptrdiff_t ssOffset = nsCSSProps::kStyleStructOffsetTable[aProperty];
|
|
nsStyleAnimType animType = nsCSSProps::kAnimTypeTable[aProperty];
|
|
MOZ_ASSERT(0 <= ssOffset ||
|
|
animType == eStyleAnimType_Custom ||
|
|
animType == eStyleAnimType_Discrete,
|
|
"all animation types other than Custom and Discrete must " \
|
|
"specify a style struct offset to extract values from");
|
|
switch (animType) {
|
|
case eStyleAnimType_Custom:
|
|
switch (aProperty) {
|
|
// For border-width, ignore the border-image business (which
|
|
// only exists until we update our implementation to the current
|
|
// spec) and use GetComputedBorder
|
|
|
|
#define BORDER_WIDTH_CASE(prop_, side_) \
|
|
case prop_: \
|
|
aComputedValue.SetCoordValue( \
|
|
static_cast<const nsStyleBorder*>(styleStruct)-> \
|
|
GetComputedBorder().side_); \
|
|
break;
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_bottom_width, bottom)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_left_width, left)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_right_width, right)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_top_width, top)
|
|
#undef BORDER_WIDTH_CASE
|
|
|
|
case eCSSProperty_column_rule_width:
|
|
aComputedValue.SetCoordValue(
|
|
static_cast<const nsStyleColumn*>(styleStruct)->
|
|
GetComputedColumnRuleWidth());
|
|
break;
|
|
|
|
case eCSSProperty_column_count: {
|
|
const nsStyleColumn *styleColumn =
|
|
static_cast<const nsStyleColumn*>(styleStruct);
|
|
if (styleColumn->mColumnCount == NS_STYLE_COLUMN_COUNT_AUTO) {
|
|
aComputedValue.SetAutoValue();
|
|
} else {
|
|
aComputedValue.SetIntValue(styleColumn->mColumnCount,
|
|
eUnit_Integer);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_order: {
|
|
const nsStylePosition *stylePosition =
|
|
static_cast<const nsStylePosition*>(styleStruct);
|
|
aComputedValue.SetIntValue(stylePosition->mOrder,
|
|
eUnit_Integer);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_border_spacing: {
|
|
const nsStyleTableBorder *styleTableBorder =
|
|
static_cast<const nsStyleTableBorder*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
pair->mXValue.SetIntegerCoordValue(styleTableBorder->mBorderSpacingCol);
|
|
pair->mYValue.SetIntegerCoordValue(styleTableBorder->mBorderSpacingRow);
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_transform_origin: {
|
|
const nsStyleDisplay *styleDisplay =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueTriplet> triplet(new nsCSSValueTriplet);
|
|
if (!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[0],
|
|
triplet->mXValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[1],
|
|
triplet->mYValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[2],
|
|
triplet->mZValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueTripletValue(triplet.forget(),
|
|
eUnit_CSSValueTriplet);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_perspective_origin: {
|
|
const nsStyleDisplay *styleDisplay =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
if (!StyleCoordToCSSValue(styleDisplay->mPerspectiveOrigin[0],
|
|
pair->mXValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mPerspectiveOrigin[1],
|
|
pair->mYValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_stroke_dasharray: {
|
|
const nsStyleSVG *svg = static_cast<const nsStyleSVG*>(styleStruct);
|
|
if (!svg->mStrokeDasharray.IsEmpty()) {
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = svg->mStrokeDasharray.Length();
|
|
i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
const nsStyleCoord &coord = svg->mStrokeDasharray[i];
|
|
nsCSSValue &value = item->mValue;
|
|
switch (coord.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
// Number means the same thing as length; we want to
|
|
// animate them the same way. Normalize both to number
|
|
// since it has more accuracy (float vs nscoord).
|
|
value.SetFloatValue(nsPresContext::
|
|
AppUnitsToFloatCSSPixels(coord.GetCoordValue()),
|
|
eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
value.SetFloatValue(coord.GetFactorValue(),
|
|
eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
value.SetPercentValue(coord.GetPercentValue());
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Dasharray);
|
|
} else if (svg->StrokeDasharrayFromObject()) {
|
|
// An empty dasharray with StrokeDasharrayFromObject() == true
|
|
// corresponds to the "context-value" keyword.
|
|
aComputedValue.SetIntValue(NS_STYLE_STROKE_PROP_CONTEXT_VALUE,
|
|
eUnit_Enumerated);
|
|
} else {
|
|
// Otherwise, an empty dasharray corresponds to the "none" keyword.
|
|
aComputedValue.SetNoneValue();
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_font_stretch: {
|
|
int16_t stretch =
|
|
static_cast<const nsStyleFont*>(styleStruct)->mFont.stretch;
|
|
static_assert(NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED == -4 &&
|
|
NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED == 4,
|
|
"font stretch constants not as expected");
|
|
if (stretch < NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED ||
|
|
stretch > NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetIntValue(stretch, eUnit_Enumerated);
|
|
return true;
|
|
}
|
|
|
|
case eCSSProperty_font_weight: {
|
|
uint16_t weight =
|
|
static_cast<const nsStyleFont*>(styleStruct)->mFont.weight;
|
|
if (weight % 100 != 0) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetIntValue(weight, eUnit_Integer);
|
|
return true;
|
|
}
|
|
|
|
case eCSSProperty_image_region: {
|
|
const nsStyleList *list =
|
|
static_cast<const nsStyleList*>(styleStruct);
|
|
const nsRect &srect = list->mImageRegion;
|
|
if (srect.IsEmpty()) {
|
|
aComputedValue.SetAutoValue();
|
|
break;
|
|
}
|
|
|
|
nsCSSRect *vrect = new nsCSSRect;
|
|
vrect->mLeft.SetIntegerCoordValue(srect.x);
|
|
vrect->mTop.SetIntegerCoordValue(srect.y);
|
|
vrect->mRight.SetIntegerCoordValue(srect.XMost());
|
|
vrect->mBottom.SetIntegerCoordValue(srect.YMost());
|
|
aComputedValue.SetAndAdoptCSSRectValue(vrect, eUnit_CSSRect);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_clip: {
|
|
const nsStyleEffects* effects =
|
|
static_cast<const nsStyleEffects*>(styleStruct);
|
|
if (!(effects->mClipFlags & NS_STYLE_CLIP_RECT)) {
|
|
aComputedValue.SetAutoValue();
|
|
} else {
|
|
nsCSSRect *vrect = new nsCSSRect;
|
|
const nsRect &srect = effects->mClip;
|
|
if (effects->mClipFlags & NS_STYLE_CLIP_TOP_AUTO) {
|
|
vrect->mTop.SetAutoValue();
|
|
} else {
|
|
vrect->mTop.SetIntegerCoordValue(srect.y);
|
|
}
|
|
if (effects->mClipFlags & NS_STYLE_CLIP_RIGHT_AUTO) {
|
|
vrect->mRight.SetAutoValue();
|
|
} else {
|
|
vrect->mRight.SetIntegerCoordValue(srect.XMost());
|
|
}
|
|
if (effects->mClipFlags & NS_STYLE_CLIP_BOTTOM_AUTO) {
|
|
vrect->mBottom.SetAutoValue();
|
|
} else {
|
|
vrect->mBottom.SetIntegerCoordValue(srect.YMost());
|
|
}
|
|
if (effects->mClipFlags & NS_STYLE_CLIP_LEFT_AUTO) {
|
|
vrect->mLeft.SetAutoValue();
|
|
} else {
|
|
vrect->mLeft.SetIntegerCoordValue(srect.x);
|
|
}
|
|
aComputedValue.SetAndAdoptCSSRectValue(vrect, eUnit_CSSRect);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_object_position: {
|
|
const nsStylePosition* stylePos =
|
|
static_cast<const nsStylePosition*>(styleStruct);
|
|
|
|
nsAutoPtr<nsCSSValue> val(new nsCSSValue);
|
|
SetPositionValue(stylePos->mObjectPosition, *val);
|
|
|
|
aComputedValue.SetAndAdoptCSSValueValue(val.forget(),
|
|
eUnit_ObjectPosition);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_background_position_x: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleBackground*>(styleStruct)->mImage;
|
|
ExtractImageLayerPositionXList(layers, aComputedValue);
|
|
break;
|
|
}
|
|
case eCSSProperty_background_position_y: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleBackground*>(styleStruct)->mImage;
|
|
ExtractImageLayerPositionYList(layers, aComputedValue);
|
|
break;
|
|
}
|
|
#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
|
|
case eCSSProperty_mask_position_x: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleSVGReset*>(styleStruct)->mMask;
|
|
ExtractImageLayerPositionXList(layers, aComputedValue);
|
|
break;
|
|
}
|
|
case eCSSProperty_mask_position_y: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleSVGReset*>(styleStruct)->mMask;
|
|
ExtractImageLayerPositionYList(layers, aComputedValue);
|
|
|
|
break;
|
|
}
|
|
#endif
|
|
case eCSSProperty_background_size: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleBackground*>(styleStruct)->mImage;
|
|
ExtractImageLayerSizePairList(layers, aComputedValue);
|
|
break;
|
|
}
|
|
#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
|
|
case eCSSProperty_mask_size: {
|
|
const nsStyleImageLayers& layers =
|
|
static_cast<const nsStyleSVGReset*>(styleStruct)->mMask;
|
|
ExtractImageLayerSizePairList(layers, aComputedValue);
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
case eCSSProperty_clip_path: {
|
|
const nsStyleSVGReset* svgReset =
|
|
static_cast<const nsStyleSVGReset*>(styleStruct);
|
|
const StyleClipPath& clipPath = svgReset->mClipPath;
|
|
const StyleShapeSourceType type = clipPath.GetType();
|
|
|
|
if (type == StyleShapeSourceType::URL) {
|
|
auto result = MakeUnique<nsCSSValue>();
|
|
result->SetURLValue(clipPath.GetURL());
|
|
aComputedValue.SetAndAdoptCSSValueValue(result.release(), eUnit_URL);
|
|
} else if (type == StyleShapeSourceType::Box) {
|
|
aComputedValue.SetIntValue(clipPath.GetReferenceBox(),
|
|
eUnit_Enumerated);
|
|
} else if (type == StyleShapeSourceType::Shape) {
|
|
RefPtr<nsCSSValue::Array> result = nsCSSValue::Array::Create(2);
|
|
if (!StyleClipBasicShapeToCSSArray(clipPath, result)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetCSSValueArrayValue(result, eUnit_Shape);
|
|
|
|
} else {
|
|
MOZ_ASSERT(type == StyleShapeSourceType::None, "unknown type");
|
|
aComputedValue.SetNoneValue();
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_filter: {
|
|
const nsStyleEffects* effects =
|
|
static_cast<const nsStyleEffects*>(styleStruct);
|
|
const nsTArray<nsStyleFilter>& filters = effects->mFilters;
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0; i < filters.Length(); ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
const nsStyleFilter& filter = filters[i];
|
|
int32_t type = filter.GetType();
|
|
if (type == NS_STYLE_FILTER_URL) {
|
|
item->mValue.SetURLValue(filter.GetURL());
|
|
} else {
|
|
nsCSSKeyword functionName =
|
|
nsCSSProps::ValueToKeywordEnum(type,
|
|
nsCSSProps::kFilterFunctionKTable);
|
|
nsCSSValue::Array* filterArray =
|
|
item->mValue.InitFunction(functionName, 1);
|
|
if (type >= NS_STYLE_FILTER_BLUR && type <= NS_STYLE_FILTER_HUE_ROTATE) {
|
|
if (!StyleCoordToCSSValue(
|
|
filter.GetFilterParameter(),
|
|
filterArray->Item(1))) {
|
|
return false;
|
|
}
|
|
} else if (type == NS_STYLE_FILTER_DROP_SHADOW) {
|
|
nsCSSValueList* shadowResult = filterArray->Item(1).SetListValue();
|
|
nsAutoPtr<nsCSSValueList> tmpShadowValue;
|
|
nsCSSValueList **tmpShadowResultTail = getter_Transfers(tmpShadowValue);
|
|
nsCSSShadowArray* shadowArray = filter.GetDropShadow();
|
|
MOZ_ASSERT(shadowArray->Length() == 1,
|
|
"expected exactly one shadow");
|
|
AppendCSSShadowValue(shadowArray->ShadowAt(0), tmpShadowResultTail);
|
|
*shadowResult = *tmpShadowValue;
|
|
} else {
|
|
// We checked all possible nsStyleFilter types but
|
|
// NS_STYLE_FILTER_NULL before. We should never enter this path.
|
|
NS_NOTREACHED("no other filter functions defined");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Filter);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_transform: {
|
|
const nsStyleDisplay *display =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (display->mSpecifiedTransform) {
|
|
// Clone, and convert all lengths (not percents) to pixels.
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (const nsCSSValueList *l = display->mSpecifiedTransform->mHead;
|
|
l; l = l->mNext) {
|
|
nsCSSValueList *clone = new nsCSSValueList;
|
|
*resultTail = clone;
|
|
resultTail = &clone->mNext;
|
|
|
|
SubstitutePixelValues(aStyleContext, l->mValue, clone->mValue);
|
|
}
|
|
} else {
|
|
result = new nsCSSValueList();
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
|
|
aComputedValue.SetTransformValue(
|
|
new nsCSSValueSharedList(result.forget()));
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_font_variation_settings: {
|
|
auto font = static_cast<const nsStyleFont*>(styleStruct);
|
|
UniquePtr<nsCSSValuePairList> result;
|
|
if (!font->mFont.fontVariationSettings.IsEmpty()) {
|
|
// Make a new list that clones the current settings
|
|
nsCSSValuePairList* tail = nullptr;
|
|
for (auto v : font->mFont.fontVariationSettings) {
|
|
auto clone = MakeUnique<nsCSSValuePairList>();
|
|
// OpenType font tags are stored in nsFont as 32-bit unsigned
|
|
// values, but represented in CSS as 4-character ASCII strings,
|
|
// beginning with the high byte of the value. So to clone the
|
|
// tag here, we append each of its 4 bytes to a string.
|
|
nsAutoString tagString;
|
|
tagString.Append(char(v.mTag >> 24));
|
|
tagString.Append(char(v.mTag >> 16));
|
|
tagString.Append(char(v.mTag >> 8));
|
|
tagString.Append(char(v.mTag));
|
|
clone->mXValue.SetStringValue(tagString, eCSSUnit_String);
|
|
clone->mYValue.SetFloatValue(v.mValue, eCSSUnit_Number);
|
|
AppendToCSSValuePairList(result, Move(clone), &tail);
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValuePairListValue(result.release());
|
|
} else {
|
|
aComputedValue.SetNormalValue();
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "missing property implementation");
|
|
return false;
|
|
};
|
|
return true;
|
|
case eStyleAnimType_Coord: {
|
|
const nsStyleCoord& coord =
|
|
StyleDataAtOffset<nsStyleCoord>(styleStruct, ssOffset);
|
|
if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_NUMBERS_ARE_PIXELS) &&
|
|
coord.GetUnit() == eStyleUnit_Coord) {
|
|
// For SVG properties where number means the same thing as length,
|
|
// we want to animate them the same way. Normalize both to number
|
|
// since it has more accuracy (float vs nscoord).
|
|
aComputedValue.SetFloatValue(nsPresContext::
|
|
AppUnitsToFloatCSSPixels(coord.GetCoordValue()));
|
|
return true;
|
|
}
|
|
return StyleCoordToValue(coord, aComputedValue);
|
|
}
|
|
case eStyleAnimType_Sides_Top:
|
|
case eStyleAnimType_Sides_Right:
|
|
case eStyleAnimType_Sides_Bottom:
|
|
case eStyleAnimType_Sides_Left: {
|
|
static_assert(
|
|
eSideTop == eStyleAnimType_Sides_Top -eStyleAnimType_Sides_Top &&
|
|
eSideRight == eStyleAnimType_Sides_Right -eStyleAnimType_Sides_Top &&
|
|
eSideBottom == eStyleAnimType_Sides_Bottom-eStyleAnimType_Sides_Top &&
|
|
eSideLeft == eStyleAnimType_Sides_Left -eStyleAnimType_Sides_Top,
|
|
"box side constants out of sync with animation side constants");
|
|
|
|
const nsStyleCoord &coord =
|
|
StyleDataAtOffset<nsStyleSides>(styleStruct, ssOffset).
|
|
Get(mozilla::Side(animType - eStyleAnimType_Sides_Top));
|
|
return StyleCoordToValue(coord, aComputedValue);
|
|
}
|
|
case eStyleAnimType_Corner_TopLeft:
|
|
case eStyleAnimType_Corner_TopRight:
|
|
case eStyleAnimType_Corner_BottomRight:
|
|
case eStyleAnimType_Corner_BottomLeft: {
|
|
static_assert(
|
|
NS_CORNER_TOP_LEFT == eStyleAnimType_Corner_TopLeft -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_TOP_RIGHT == eStyleAnimType_Corner_TopRight -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_BOTTOM_RIGHT == eStyleAnimType_Corner_BottomRight -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_BOTTOM_LEFT == eStyleAnimType_Corner_BottomLeft -
|
|
eStyleAnimType_Corner_TopLeft,
|
|
"box corner constants out of sync with animation corner constants");
|
|
|
|
const nsStyleCorners& corners =
|
|
StyleDataAtOffset<nsStyleCorners>(styleStruct, ssOffset);
|
|
uint8_t fullCorner = animType - eStyleAnimType_Corner_TopLeft;
|
|
const nsStyleCoord &horiz =
|
|
corners.Get(NS_FULL_TO_HALF_CORNER(fullCorner, false));
|
|
const nsStyleCoord &vert =
|
|
corners.Get(NS_FULL_TO_HALF_CORNER(fullCorner, true));
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
if (!StyleCoordToCSSValue(horiz, pair->mXValue) ||
|
|
!StyleCoordToCSSValue(vert, pair->mYValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_nscoord:
|
|
aComputedValue.SetCoordValue(
|
|
StyleDataAtOffset<nscoord>(styleStruct, ssOffset));
|
|
return true;
|
|
case eStyleAnimType_float:
|
|
aComputedValue.SetFloatValue(
|
|
StyleDataAtOffset<float>(styleStruct, ssOffset));
|
|
if (aProperty == eCSSProperty_font_size_adjust &&
|
|
aComputedValue.GetFloatValue() == -1.0f) {
|
|
// In nsStyleFont, we set mFont.sizeAdjust to -1.0 to represent
|
|
// font-size-adjust: none. Here, we have to treat this as a keyword
|
|
// instead of a float value, to make sure we don't end up doing
|
|
// interpolation with it.
|
|
aComputedValue.SetNoneValue();
|
|
}
|
|
return true;
|
|
case eStyleAnimType_Color:
|
|
aComputedValue.SetColorValue(
|
|
StyleDataAtOffset<nscolor>(styleStruct, ssOffset));
|
|
return true;
|
|
case eStyleAnimType_ComplexColor: {
|
|
aComputedValue.SetComplexColorValue(
|
|
StyleDataAtOffset<StyleComplexColor>(styleStruct, ssOffset));
|
|
return true;
|
|
}
|
|
case eStyleAnimType_PaintServer: {
|
|
const nsStyleSVGPaint& paint =
|
|
StyleDataAtOffset<nsStyleSVGPaint>(styleStruct, ssOffset);
|
|
switch (paint.Type()) {
|
|
case eStyleSVGPaintType_Color:
|
|
aComputedValue.SetColorValue(paint.GetColor());
|
|
return true;
|
|
case eStyleSVGPaintType_Server: {
|
|
css::URLValue* url = paint.GetPaintServer();
|
|
if (!url) {
|
|
NS_WARNING("Null paint server");
|
|
return false;
|
|
}
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
pair->mXValue.SetURLValue(url);
|
|
pair->mYValue.SetColorValue(paint.GetFallbackColor());
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eStyleSVGPaintType_ContextFill:
|
|
case eStyleSVGPaintType_ContextStroke: {
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
pair->mXValue.SetIntValue(paint.Type() == eStyleSVGPaintType_ContextFill ?
|
|
NS_COLOR_CONTEXT_FILL : NS_COLOR_CONTEXT_STROKE,
|
|
eCSSUnit_Enumerated);
|
|
pair->mYValue.SetColorValue(paint.GetFallbackColor());
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(paint.Type() == eStyleSVGPaintType_None,
|
|
"Unexpected SVG paint type");
|
|
aComputedValue.SetNoneValue();
|
|
return true;
|
|
}
|
|
}
|
|
case eStyleAnimType_Shadow: {
|
|
const nsCSSShadowArray* shadowArray =
|
|
StyleDataAtOffset<RefPtr<nsCSSShadowArray>>(styleStruct, ssOffset);
|
|
if (!shadowArray) {
|
|
aComputedValue.SetAndAdoptCSSValueListValue(nullptr, eUnit_Shadow);
|
|
return true;
|
|
}
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = shadowArray->Length(); i < i_end; ++i) {
|
|
AppendCSSShadowValue(shadowArray->ShadowAt(i), resultTail);
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Shadow);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_Discrete: {
|
|
if (aProperty == eCSSProperty_visibility) {
|
|
aComputedValue.SetIntValue(
|
|
static_cast<const nsStyleVisibility*>(styleStruct)->mVisible,
|
|
eUnit_Visibility);
|
|
return true;
|
|
}
|
|
if (aStyleContext->StyleSource().IsServoComputedValues()) {
|
|
NS_ERROR("stylo: extracting discretely animated values not supported");
|
|
return false;
|
|
}
|
|
auto cssValue = MakeUnique<nsCSSValue>(eCSSUnit_Unset);
|
|
aStyleContext->RuleNode()->GetDiscretelyAnimatedCSSValue(aProperty,
|
|
cssValue.get());
|
|
aComputedValue.SetAndAdoptCSSValueValue(cssValue.release(),
|
|
eUnit_DiscreteCSSValue);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_None:
|
|
NS_NOTREACHED("shouldn't use on non-animatable properties");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
gfxSize
|
|
StyleAnimationValue::GetScaleValue(const nsIFrame* aForFrame) const
|
|
{
|
|
MOZ_ASSERT(aForFrame);
|
|
MOZ_ASSERT(GetUnit() == StyleAnimationValue::eUnit_Transform);
|
|
|
|
nsCSSValueSharedList* list = GetCSSValueSharedListValue();
|
|
MOZ_ASSERT(list->mHead);
|
|
|
|
RuleNodeCacheConditions dontCare;
|
|
bool dontCareBool;
|
|
nsStyleTransformMatrix::TransformReferenceBox refBox(aForFrame);
|
|
Matrix4x4 transform = nsStyleTransformMatrix::ReadTransforms(
|
|
list->mHead,
|
|
aForFrame->StyleContext(),
|
|
aForFrame->PresContext(), dontCare, refBox,
|
|
aForFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
&dontCareBool);
|
|
|
|
Matrix transform2d;
|
|
bool canDraw2D = transform.CanDraw2D(&transform2d);
|
|
if (!canDraw2D) {
|
|
return gfxSize();
|
|
}
|
|
|
|
return ThebesMatrix(transform2d).ScaleFactors(true);
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(int32_t aInt, Unit aUnit,
|
|
IntegerConstructorType)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(nscoord aLength, CoordConstructorType)
|
|
{
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(float aPercent,
|
|
PercentConstructorType)
|
|
{
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(float aFloat, FloatConstructorType)
|
|
{
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(nscolor aColor, ColorConstructorType)
|
|
{
|
|
mUnit = eUnit_Color;
|
|
mValue.mCSSValue = new nsCSSValue();
|
|
mValue.mCSSValue->SetColorValue(aColor);
|
|
}
|
|
|
|
StyleAnimationValue&
|
|
StyleAnimationValue::operator=(const StyleAnimationValue& aOther)
|
|
{
|
|
if (this == &aOther) {
|
|
return *this;
|
|
}
|
|
|
|
FreeValue();
|
|
|
|
mUnit = aOther.mUnit;
|
|
switch (mUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Normal:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_CurrentColor:
|
|
break;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
case eUnit_Integer:
|
|
mValue.mInt = aOther.mValue.mInt;
|
|
break;
|
|
case eUnit_Coord:
|
|
mValue.mCoord = aOther.mValue.mCoord;
|
|
break;
|
|
case eUnit_Percent:
|
|
case eUnit_Float:
|
|
mValue.mFloat = aOther.mValue.mFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
break;
|
|
case eUnit_Calc:
|
|
case eUnit_Color:
|
|
case eUnit_ObjectPosition:
|
|
case eUnit_URL:
|
|
case eUnit_DiscreteCSSValue:
|
|
MOZ_ASSERT(IsCSSValueUnit(mUnit),
|
|
"This clause is for handling nsCSSValue-backed units");
|
|
MOZ_ASSERT(aOther.mValue.mCSSValue, "values may not be null");
|
|
mValue.mCSSValue = new nsCSSValue(*aOther.mValue.mCSSValue);
|
|
break;
|
|
case eUnit_CSSValuePair:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValuePair,
|
|
"value pairs may not be null");
|
|
mValue.mCSSValuePair = new nsCSSValuePair(*aOther.mValue.mCSSValuePair);
|
|
break;
|
|
case eUnit_CSSValueTriplet:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValueTriplet,
|
|
"value triplets may not be null");
|
|
mValue.mCSSValueTriplet = new nsCSSValueTriplet(*aOther.mValue.mCSSValueTriplet);
|
|
break;
|
|
case eUnit_CSSRect:
|
|
MOZ_ASSERT(aOther.mValue.mCSSRect, "rects may not be null");
|
|
mValue.mCSSRect = new nsCSSRect(*aOther.mValue.mCSSRect);
|
|
break;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPositionCoord:
|
|
MOZ_ASSERT(mUnit == eUnit_Shadow || mUnit == eUnit_Filter ||
|
|
aOther.mValue.mCSSValueList,
|
|
"value lists other than shadows and filters may not be null");
|
|
if (aOther.mValue.mCSSValueList) {
|
|
mValue.mCSSValueList = aOther.mValue.mCSSValueList->Clone();
|
|
} else {
|
|
mValue.mCSSValueList = nullptr;
|
|
}
|
|
break;
|
|
case eUnit_Shape:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValueArray,
|
|
"value arrays may not be null");
|
|
mValue.mCSSValueArray = aOther.mValue.mCSSValueArray;
|
|
mValue.mCSSValueArray->AddRef();
|
|
break;
|
|
case eUnit_Transform:
|
|
mValue.mCSSValueSharedList = aOther.mValue.mCSSValueSharedList;
|
|
mValue.mCSSValueSharedList->AddRef();
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValuePairList,
|
|
"value pair lists may not be null");
|
|
mValue.mCSSValuePairList = aOther.mValue.mCSSValuePairList->Clone();
|
|
break;
|
|
case eUnit_UnparsedString:
|
|
MOZ_ASSERT(aOther.mValue.mString, "expecting non-null string");
|
|
mValue.mString = aOther.mValue.mString;
|
|
mValue.mString->AddRef();
|
|
break;
|
|
case eUnit_ComplexColor:
|
|
MOZ_ASSERT(aOther.mValue.mComplexColor);
|
|
mValue.mComplexColor = aOther.mValue.mComplexColor;
|
|
mValue.mComplexColor->AddRef();
|
|
break;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetNormalValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Normal;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAutoValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Auto;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetNoneValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_None;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetIntValue(int32_t aInt, Unit aUnit)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
FreeValue();
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetCoordValue(nscoord aLength)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetPercentValue(float aPercent)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetFloatValue(float aFloat)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetColorValue(nscolor aColor)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Color;
|
|
mValue.mCSSValue = new nsCSSValue();
|
|
mValue.mCSSValue->SetColorValue(aColor);
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetCurrentColorValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_CurrentColor;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetComplexColorValue(const StyleComplexColor& aColor)
|
|
{
|
|
if (aColor.IsCurrentColor()) {
|
|
SetCurrentColorValue();
|
|
} else if (aColor.IsNumericColor()) {
|
|
SetColorValue(aColor.mColor);
|
|
} else {
|
|
SetComplexColorValue(do_AddRef(new ComplexColorValue(aColor)));
|
|
}
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetComplexColorValue(
|
|
already_AddRefed<ComplexColorValue> aValue)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_ComplexColor;
|
|
mValue.mComplexColor = aValue.take();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetUnparsedStringValue(const nsString& aString)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_UnparsedString;
|
|
mValue.mString = nsCSSValue::BufferFromString(aString).take();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueValue(nsCSSValue *aValue,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValue != nullptr, "values may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValue = aValue; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValuePairValue(nsCSSValuePair *aValuePair,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValuePairUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValuePair != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValuePair = aValuePair; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueTripletValue(
|
|
nsCSSValueTriplet *aValueTriplet, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueTripletUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValueTriplet != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueTriplet = aValueTriplet; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSRectValue(nsCSSRect *aRect, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSRectUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aRect != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSRect = aRect; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetCSSValueArrayValue(nsCSSValue::Array* aValue,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueArrayUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValue != nullptr,
|
|
"not currently expecting any arrays to be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueArray = aValue;
|
|
mValue.mCSSValueArray->AddRef();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueListValue(nsCSSValueList *aValueList,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueListUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aUnit == eUnit_Shadow || aUnit == eUnit_Filter ||
|
|
aValueList != nullptr,
|
|
"value lists other than shadows and filters may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueList = aValueList; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetTransformValue(nsCSSValueSharedList* aList)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Transform;
|
|
mValue.mCSSValueSharedList = aList;
|
|
mValue.mCSSValueSharedList->AddRef();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValuePairListValue(
|
|
nsCSSValuePairList *aValuePairList)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(aValuePairList, "may not be null");
|
|
mUnit = eUnit_CSSValuePairList;
|
|
mValue.mCSSValuePairList = aValuePairList; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::FreeValue()
|
|
{
|
|
if (IsCSSValueUnit(mUnit)) {
|
|
delete mValue.mCSSValue;
|
|
} else if (IsCSSValueListUnit(mUnit)) {
|
|
delete mValue.mCSSValueList;
|
|
} else if (IsCSSValueSharedListValue(mUnit)) {
|
|
mValue.mCSSValueSharedList->Release();
|
|
} else if (IsCSSValuePairUnit(mUnit)) {
|
|
delete mValue.mCSSValuePair;
|
|
} else if (IsCSSValueTripletUnit(mUnit)) {
|
|
delete mValue.mCSSValueTriplet;
|
|
} else if (IsCSSRectUnit(mUnit)) {
|
|
delete mValue.mCSSRect;
|
|
} else if (IsCSSValuePairListUnit(mUnit)) {
|
|
delete mValue.mCSSValuePairList;
|
|
} else if (IsCSSValueArrayUnit(mUnit)) {
|
|
mValue.mCSSValueArray->Release();
|
|
} else if (IsStringUnit(mUnit)) {
|
|
MOZ_ASSERT(mValue.mString, "expecting non-null string");
|
|
mValue.mString->Release();
|
|
} else if (mUnit == eUnit_ComplexColor) {
|
|
mValue.mComplexColor->Release();
|
|
}
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::operator==(const StyleAnimationValue& aOther) const
|
|
{
|
|
if (mUnit != aOther.mUnit) {
|
|
return false;
|
|
}
|
|
|
|
switch (mUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Normal:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_CurrentColor:
|
|
return true;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
case eUnit_Integer:
|
|
return mValue.mInt == aOther.mValue.mInt;
|
|
case eUnit_Coord:
|
|
return mValue.mCoord == aOther.mValue.mCoord;
|
|
case eUnit_Percent:
|
|
case eUnit_Float:
|
|
return mValue.mFloat == aOther.mValue.mFloat;
|
|
case eUnit_Calc:
|
|
case eUnit_Color:
|
|
case eUnit_ObjectPosition:
|
|
case eUnit_URL:
|
|
case eUnit_DiscreteCSSValue:
|
|
MOZ_ASSERT(IsCSSValueUnit(mUnit),
|
|
"This clause is for handling nsCSSValue-backed units");
|
|
return *mValue.mCSSValue == *aOther.mValue.mCSSValue;
|
|
case eUnit_CSSValuePair:
|
|
return *mValue.mCSSValuePair == *aOther.mValue.mCSSValuePair;
|
|
case eUnit_CSSValueTriplet:
|
|
return *mValue.mCSSValueTriplet == *aOther.mValue.mCSSValueTriplet;
|
|
case eUnit_CSSRect:
|
|
return *mValue.mCSSRect == *aOther.mValue.mCSSRect;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPositionCoord:
|
|
return nsCSSValueList::Equal(mValue.mCSSValueList,
|
|
aOther.mValue.mCSSValueList);
|
|
case eUnit_Shape:
|
|
return *mValue.mCSSValueArray == *aOther.mValue.mCSSValueArray;
|
|
case eUnit_Transform:
|
|
return *mValue.mCSSValueSharedList == *aOther.mValue.mCSSValueSharedList;
|
|
case eUnit_CSSValuePairList:
|
|
return nsCSSValuePairList::Equal(mValue.mCSSValuePairList,
|
|
aOther.mValue.mCSSValuePairList);
|
|
case eUnit_UnparsedString:
|
|
return (NS_strcmp(GetStringBufferValue(),
|
|
aOther.GetStringBufferValue()) == 0);
|
|
case eUnit_ComplexColor:
|
|
return *mValue.mComplexColor == *aOther.mValue.mComplexColor;
|
|
}
|
|
|
|
NS_NOTREACHED("incomplete case");
|
|
return false;
|
|
}
|