зеркало из https://github.com/mozilla/gecko-dev.git
129 строки
3.7 KiB
C++
129 строки
3.7 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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#ifndef mozilla_StyleAnimationValue_h_
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#define mozilla_StyleAnimationValue_h_
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#include "mozilla/gfx/MatrixFwd.h"
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#include "mozilla/gfx/Point.h"
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#include "mozilla/ServoBindingTypes.h"
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#include "mozilla/UniquePtr.h"
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#include "nsStringFwd.h"
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#include "nsStringBuffer.h"
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#include "nsCoord.h"
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#include "nsColor.h"
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#include "nsCSSPropertyID.h"
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#include "nsCSSValue.h"
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#include "nsStyleCoord.h"
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#include "nsStyleTransformMatrix.h"
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class nsIFrame;
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class gfx3DMatrix;
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namespace mozilla {
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class ComputedStyle;
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namespace css {
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class StyleRule;
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} // namespace css
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namespace dom {
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class Element;
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} // namespace dom
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enum class CSSPseudoElementType : uint8_t;
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struct PropertyStyleAnimationValuePair;
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struct AnimationValue
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{
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explicit AnimationValue(const RefPtr<RawServoAnimationValue>& aValue)
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: mServo(aValue) { }
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AnimationValue() = default;
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AnimationValue(const AnimationValue& aOther)
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: mServo(aOther.mServo) { }
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AnimationValue(AnimationValue&& aOther)
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: mServo(std::move(aOther.mServo)) { }
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AnimationValue& operator=(const AnimationValue& aOther)
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{
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if (this != &aOther) {
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mServo = aOther.mServo;
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}
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return *this;
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}
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AnimationValue& operator=(AnimationValue&& aOther)
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{
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MOZ_ASSERT(this != &aOther, "Do not move itself");
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if (this != &aOther) {
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mServo = std::move(aOther.mServo);
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}
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return *this;
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}
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bool operator==(const AnimationValue& aOther) const;
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bool operator!=(const AnimationValue& aOther) const;
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bool IsNull() const
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{
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return !mServo;
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}
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float GetOpacity() const;
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// Return the transform list as a RefPtr.
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already_AddRefed<const nsCSSValueSharedList> GetTransformList() const;
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// Return the scale for mServo, which is calculated with reference to aFrame.
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mozilla::gfx::Size GetScaleValue(const nsIFrame* aFrame) const;
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// Uncompute this AnimationValue and then serialize it.
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void SerializeSpecifiedValue(nsCSSPropertyID aProperty,
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nsAString& aString) const;
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// Check if |*this| and |aToValue| can be interpolated.
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bool IsInterpolableWith(nsCSSPropertyID aProperty,
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const AnimationValue& aToValue) const;
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// Compute the distance between *this and aOther.
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// If |aComputedStyle| is nullptr, we will return 0.0 if we have mismatched
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// transform lists.
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double ComputeDistance(nsCSSPropertyID aProperty,
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const AnimationValue& aOther,
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ComputedStyle* aComputedStyle) const;
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// Create an AnimaitonValue from a string. This method flushes style, so we
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// should use this carefully. Now, it is only used by
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// nsDOMWindowUtils::ComputeAnimationDistance.
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static AnimationValue FromString(nsCSSPropertyID aProperty,
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const nsAString& aValue,
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dom::Element* aElement);
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// Create an AnimationValue from an opacity value.
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static AnimationValue Opacity(float aOpacity);
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// Create an AnimationValue from a transform list.
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static AnimationValue Transform(nsCSSValueSharedList& aList);
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static already_AddRefed<nsCSSValue::Array>
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AppendTransformFunction(nsCSSKeyword aTransformFunction,
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nsCSSValueList**& aListTail);
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RefPtr<RawServoAnimationValue> mServo;
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};
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struct PropertyStyleAnimationValuePair
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{
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nsCSSPropertyID mProperty;
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AnimationValue mValue;
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};
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} // namespace mozilla
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#endif
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