зеркало из https://github.com/mozilla/gecko-dev.git
663 строки
18 KiB
C++
663 строки
18 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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/* DOM object representing values in DOM computed style */
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#include "nsROCSSPrimitiveValue.h"
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#include "mozilla/dom/CSSPrimitiveValueBinding.h"
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#include "nsPresContext.h"
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#include "nsStyleUtil.h"
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#include "nsDOMCSSRGBColor.h"
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#include "nsDOMCSSRect.h"
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#include "nsIURI.h"
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#include "nsError.h"
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// There is no CSS_TURN constant on the CSSPrimitiveValue interface,
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// since that unit is newer than DOM Level 2 Style, and CSS OM will
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// probably expose CSS values in some other way in the future. We
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// use this value in mType for "turn"-unit angles, but we define it
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// here to avoid exposing it to content.
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#define CSS_TURN 30U
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// Likewise we have some internal aliases for CSS_NUMBER that we don't
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// want to expose.
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#define CSS_NUMBER_INT32 31U
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#define CSS_NUMBER_UINT32 32U
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using namespace mozilla;
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using namespace mozilla::dom;
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nsROCSSPrimitiveValue::nsROCSSPrimitiveValue()
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: CSSValue(), mType(CSSPrimitiveValueBinding::CSS_PX)
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{
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mValue.mAppUnits = 0;
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}
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nsROCSSPrimitiveValue::~nsROCSSPrimitiveValue()
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{
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Reset();
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}
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsROCSSPrimitiveValue)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsROCSSPrimitiveValue)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsROCSSPrimitiveValue)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, CSSValue)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsROCSSPrimitiveValue)
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NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsROCSSPrimitiveValue)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsROCSSPrimitiveValue)
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if (tmp->mType == CSSPrimitiveValueBinding::CSS_URI) {
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mURI)
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} else if (tmp->mType == CSSPrimitiveValueBinding::CSS_RGBCOLOR) {
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mColor)
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} else if (tmp->mType == CSSPrimitiveValueBinding::CSS_RECT) {
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mRect)
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsROCSSPrimitiveValue)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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tmp->Reset();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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JSObject*
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nsROCSSPrimitiveValue::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
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{
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return dom::CSSPrimitiveValueBinding::Wrap(cx, this, aGivenProto);
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}
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nsresult
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nsROCSSPrimitiveValue::GetCssText(nsAString& aCssText)
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{
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nsAutoString tmpStr;
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aCssText.Truncate();
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nsresult result = NS_OK;
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switch (mType) {
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case CSSPrimitiveValueBinding::CSS_PX:
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{
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float val = nsPresContext::AppUnitsToFloatCSSPixels(mValue.mAppUnits);
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nsStyleUtil::AppendCSSNumber(val, tmpStr);
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tmpStr.AppendLiteral("px");
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break;
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}
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case CSSPrimitiveValueBinding::CSS_IDENT:
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{
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AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(mValue.mKeyword),
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tmpStr);
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break;
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}
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case CSSPrimitiveValueBinding::CSS_STRING:
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case CSSPrimitiveValueBinding::CSS_COUNTER: /* FIXME: COUNTER should use an object */
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{
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tmpStr.Append(mValue.mString);
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break;
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}
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case CSSPrimitiveValueBinding::CSS_URI:
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{
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if (mValue.mURI) {
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nsAutoCString specUTF8;
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nsresult rv = mValue.mURI->GetSpec(specUTF8);
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NS_ENSURE_SUCCESS(rv, rv);
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tmpStr.AssignLiteral("url(");
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nsStyleUtil::AppendEscapedCSSString(NS_ConvertUTF8toUTF16(specUTF8),
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tmpStr);
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tmpStr.Append(')');
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} else {
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// http://dev.w3.org/csswg/css3-values/#attr defines
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// 'about:invalid' as the default value for url attributes,
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// so let's also use it here as the default computed value
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// for invalid URLs.
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tmpStr.AssignLiteral(u"url(about:invalid)");
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}
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break;
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}
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case CSSPrimitiveValueBinding::CSS_ATTR:
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{
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tmpStr.AppendLiteral("attr(");
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tmpStr.Append(mValue.mString);
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tmpStr.Append(char16_t(')'));
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break;
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}
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case CSSPrimitiveValueBinding::CSS_PERCENTAGE:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat * 100, tmpStr);
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tmpStr.Append(char16_t('%'));
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break;
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}
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case CSSPrimitiveValueBinding::CSS_NUMBER:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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break;
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}
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case CSS_NUMBER_INT32:
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{
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tmpStr.AppendInt(mValue.mInt32);
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break;
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}
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case CSS_NUMBER_UINT32:
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{
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tmpStr.AppendInt(mValue.mUint32);
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break;
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}
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case CSSPrimitiveValueBinding::CSS_DEG:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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tmpStr.AppendLiteral("deg");
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break;
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}
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case CSSPrimitiveValueBinding::CSS_GRAD:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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tmpStr.AppendLiteral("grad");
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break;
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}
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case CSSPrimitiveValueBinding::CSS_RAD:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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tmpStr.AppendLiteral("rad");
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break;
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}
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case CSS_TURN:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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tmpStr.AppendLiteral("turn");
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break;
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}
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case CSSPrimitiveValueBinding::CSS_RECT:
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{
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NS_ASSERTION(mValue.mRect, "mValue.mRect should never be null");
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NS_NAMED_LITERAL_STRING(comma, ", ");
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nsAutoString sideValue;
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tmpStr.AssignLiteral("rect(");
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// get the top
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result = mValue.mRect->Top()->GetCssText(sideValue);
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if (NS_FAILED(result))
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break;
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tmpStr.Append(sideValue + comma);
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// get the right
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result = mValue.mRect->Right()->GetCssText(sideValue);
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if (NS_FAILED(result))
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break;
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tmpStr.Append(sideValue + comma);
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// get the bottom
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result = mValue.mRect->Bottom()->GetCssText(sideValue);
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if (NS_FAILED(result))
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break;
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tmpStr.Append(sideValue + comma);
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// get the left
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result = mValue.mRect->Left()->GetCssText(sideValue);
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if (NS_FAILED(result))
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break;
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tmpStr.Append(sideValue + NS_LITERAL_STRING(")"));
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break;
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}
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case CSSPrimitiveValueBinding::CSS_RGBCOLOR:
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{
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NS_ASSERTION(mValue.mColor, "mValue.mColor should never be null");
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ErrorResult error;
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NS_NAMED_LITERAL_STRING(comma, ", ");
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nsAutoString colorValue;
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if (mValue.mColor->HasAlpha())
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tmpStr.AssignLiteral("rgba(");
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else
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tmpStr.AssignLiteral("rgb(");
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// get the red component
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mValue.mColor->Red()->GetCssText(colorValue, error);
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if (error.Failed())
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break;
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tmpStr.Append(colorValue + comma);
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// get the green component
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mValue.mColor->Green()->GetCssText(colorValue, error);
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if (error.Failed())
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break;
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tmpStr.Append(colorValue + comma);
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// get the blue component
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mValue.mColor->Blue()->GetCssText(colorValue, error);
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if (error.Failed())
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break;
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tmpStr.Append(colorValue);
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if (mValue.mColor->HasAlpha()) {
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// get the alpha component
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mValue.mColor->Alpha()->GetCssText(colorValue, error);
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if (error.Failed())
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break;
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tmpStr.Append(comma + colorValue);
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}
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tmpStr.Append(')');
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break;
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}
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case CSSPrimitiveValueBinding::CSS_S:
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{
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nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
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tmpStr.Append('s');
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break;
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}
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case CSSPrimitiveValueBinding::CSS_CM:
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case CSSPrimitiveValueBinding::CSS_MM:
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case CSSPrimitiveValueBinding::CSS_IN:
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case CSSPrimitiveValueBinding::CSS_PT:
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case CSSPrimitiveValueBinding::CSS_PC:
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case CSSPrimitiveValueBinding::CSS_UNKNOWN:
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case CSSPrimitiveValueBinding::CSS_EMS:
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case CSSPrimitiveValueBinding::CSS_EXS:
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case CSSPrimitiveValueBinding::CSS_MS:
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case CSSPrimitiveValueBinding::CSS_HZ:
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case CSSPrimitiveValueBinding::CSS_KHZ:
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case CSSPrimitiveValueBinding::CSS_DIMENSION:
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NS_ERROR("We have a bogus value set. This should not happen");
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return NS_ERROR_DOM_INVALID_ACCESS_ERR;
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}
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if (NS_SUCCEEDED(result)) {
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aCssText.Assign(tmpStr);
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}
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return NS_OK;
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}
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void
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nsROCSSPrimitiveValue::GetCssText(nsString& aText, ErrorResult& aRv)
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{
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aRv = GetCssText(aText);
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}
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void
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nsROCSSPrimitiveValue::SetCssText(const nsAString& aText, ErrorResult& aRv)
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{
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aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
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}
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uint16_t
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nsROCSSPrimitiveValue::CssValueType() const
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{
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return CSSValueBinding::CSS_PRIMITIVE_VALUE;
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}
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void
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nsROCSSPrimitiveValue::SetFloatValue(uint16_t aType, float aVal,
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ErrorResult& aRv)
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{
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aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
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}
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float
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nsROCSSPrimitiveValue::GetFloatValue(uint16_t aUnitType, ErrorResult& aRv)
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{
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switch(aUnitType) {
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case CSSPrimitiveValueBinding::CSS_PX:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return nsPresContext::AppUnitsToFloatCSSPixels(mValue.mAppUnits);
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}
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break;
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case CSSPrimitiveValueBinding::CSS_CM:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return mValue.mAppUnits * CM_PER_INCH_FLOAT /
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nsPresContext::AppUnitsPerCSSInch();
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}
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break;
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case CSSPrimitiveValueBinding::CSS_MM:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return mValue.mAppUnits * MM_PER_INCH_FLOAT /
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nsPresContext::AppUnitsPerCSSInch();
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}
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break;
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case CSSPrimitiveValueBinding::CSS_IN:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return mValue.mAppUnits / nsPresContext::AppUnitsPerCSSInch();
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}
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break;
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case CSSPrimitiveValueBinding::CSS_PT:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return mValue.mAppUnits * POINTS_PER_INCH_FLOAT /
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nsPresContext::AppUnitsPerCSSInch();
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}
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break;
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case CSSPrimitiveValueBinding::CSS_PC:
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if (mType == CSSPrimitiveValueBinding::CSS_PX) {
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return mValue.mAppUnits * 6.0f /
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nsPresContext::AppUnitsPerCSSInch();
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}
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break;
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case CSSPrimitiveValueBinding::CSS_PERCENTAGE:
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if (mType == CSSPrimitiveValueBinding::CSS_PERCENTAGE) {
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return mValue.mFloat * 100;
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}
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break;
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case CSSPrimitiveValueBinding::CSS_NUMBER:
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if (mType == CSSPrimitiveValueBinding::CSS_NUMBER) {
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return mValue.mFloat;
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}
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if (mType == CSS_NUMBER_INT32) {
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return mValue.mInt32;
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}
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if (mType == CSS_NUMBER_UINT32) {
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return mValue.mUint32;
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}
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break;
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case CSSPrimitiveValueBinding::CSS_UNKNOWN:
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case CSSPrimitiveValueBinding::CSS_EMS:
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case CSSPrimitiveValueBinding::CSS_EXS:
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case CSSPrimitiveValueBinding::CSS_DEG:
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case CSSPrimitiveValueBinding::CSS_RAD:
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case CSSPrimitiveValueBinding::CSS_GRAD:
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case CSSPrimitiveValueBinding::CSS_MS:
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case CSSPrimitiveValueBinding::CSS_S:
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case CSSPrimitiveValueBinding::CSS_HZ:
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case CSSPrimitiveValueBinding::CSS_KHZ:
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case CSSPrimitiveValueBinding::CSS_DIMENSION:
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case CSSPrimitiveValueBinding::CSS_STRING:
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case CSSPrimitiveValueBinding::CSS_URI:
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case CSSPrimitiveValueBinding::CSS_IDENT:
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case CSSPrimitiveValueBinding::CSS_ATTR:
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case CSSPrimitiveValueBinding::CSS_COUNTER:
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case CSSPrimitiveValueBinding::CSS_RECT:
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case CSSPrimitiveValueBinding::CSS_RGBCOLOR:
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break;
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}
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aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
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return 0;
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}
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void
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nsROCSSPrimitiveValue::SetStringValue(uint16_t aType, const nsAString& aString,
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mozilla::ErrorResult& aRv)
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{
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aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
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}
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void
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nsROCSSPrimitiveValue::GetStringValue(nsString& aReturn, ErrorResult& aRv)
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{
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switch (mType) {
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case CSSPrimitiveValueBinding::CSS_IDENT:
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CopyUTF8toUTF16(nsCSSKeywords::GetStringValue(mValue.mKeyword), aReturn);
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break;
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case CSSPrimitiveValueBinding::CSS_STRING:
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case CSSPrimitiveValueBinding::CSS_ATTR:
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aReturn.Assign(mValue.mString);
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break;
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case CSSPrimitiveValueBinding::CSS_URI: {
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nsAutoCString spec;
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if (mValue.mURI) {
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nsresult rv = mValue.mURI->GetSpec(spec);
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if (NS_FAILED(rv)) {
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aRv.Throw(rv);
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return;
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}
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}
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CopyUTF8toUTF16(spec, aReturn);
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break;
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}
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default:
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aReturn.Truncate();
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aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
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return;
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}
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}
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void
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nsROCSSPrimitiveValue::GetCounterValue(ErrorResult& aRv)
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{
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aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
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}
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nsDOMCSSRect*
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nsROCSSPrimitiveValue::GetRectValue(ErrorResult& aRv)
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{
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if (mType != CSSPrimitiveValueBinding::CSS_RECT) {
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aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
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return nullptr;
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}
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NS_ASSERTION(mValue.mRect, "mValue.mRect should never be null");
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return mValue.mRect;
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}
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nsDOMCSSRGBColor*
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nsROCSSPrimitiveValue::GetRGBColorValue(ErrorResult& aRv)
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{
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if (mType != CSSPrimitiveValueBinding::CSS_RGBCOLOR) {
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aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
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return nullptr;
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}
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NS_ASSERTION(mValue.mColor, "mValue.mColor should never be null");
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return mValue.mColor;
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}
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void
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nsROCSSPrimitiveValue::SetNumber(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
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mType = CSSPrimitiveValueBinding::CSS_NUMBER;
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}
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void
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nsROCSSPrimitiveValue::SetNumber(int32_t aValue)
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{
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Reset();
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mValue.mInt32 = aValue;
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mType = CSS_NUMBER_INT32;
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}
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void
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nsROCSSPrimitiveValue::SetNumber(uint32_t aValue)
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{
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Reset();
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mValue.mUint32 = aValue;
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mType = CSS_NUMBER_UINT32;
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}
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void
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nsROCSSPrimitiveValue::SetPercent(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
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mType = CSSPrimitiveValueBinding::CSS_PERCENTAGE;
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}
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void
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nsROCSSPrimitiveValue::SetDegree(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
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mType = CSSPrimitiveValueBinding::CSS_DEG;
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}
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void
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nsROCSSPrimitiveValue::SetGrad(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
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mType = CSSPrimitiveValueBinding::CSS_GRAD;
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}
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void
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nsROCSSPrimitiveValue::SetRadian(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
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mType = CSSPrimitiveValueBinding::CSS_RAD;
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}
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void
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nsROCSSPrimitiveValue::SetTurn(float aValue)
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{
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Reset();
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mValue.mFloat = aValue;
|
|
mType = CSS_TURN;
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetAppUnits(nscoord aValue)
|
|
{
|
|
Reset();
|
|
mValue.mAppUnits = aValue;
|
|
mType = CSSPrimitiveValueBinding::CSS_PX;
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetAppUnits(float aValue)
|
|
{
|
|
SetAppUnits(NSToCoordRound(aValue));
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetIdent(nsCSSKeyword aKeyword)
|
|
{
|
|
MOZ_ASSERT(aKeyword != eCSSKeyword_UNKNOWN &&
|
|
0 <= aKeyword && aKeyword < eCSSKeyword_COUNT,
|
|
"bad keyword");
|
|
Reset();
|
|
mValue.mKeyword = aKeyword;
|
|
mType = CSSPrimitiveValueBinding::CSS_IDENT;
|
|
}
|
|
|
|
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
|
|
void
|
|
nsROCSSPrimitiveValue::SetString(const nsACString& aString, uint16_t aType)
|
|
{
|
|
Reset();
|
|
mValue.mString = ToNewUnicode(aString);
|
|
if (mValue.mString) {
|
|
mType = aType;
|
|
} else {
|
|
// XXXcaa We should probably let the caller know we are out of memory
|
|
mType = CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
|
|
void
|
|
nsROCSSPrimitiveValue::SetString(const nsAString& aString, uint16_t aType)
|
|
{
|
|
Reset();
|
|
mValue.mString = ToNewUnicode(aString);
|
|
if (mValue.mString) {
|
|
mType = aType;
|
|
} else {
|
|
// XXXcaa We should probably let the caller know we are out of memory
|
|
mType = CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetURI(nsIURI *aURI)
|
|
{
|
|
Reset();
|
|
mValue.mURI = aURI;
|
|
NS_IF_ADDREF(mValue.mURI);
|
|
mType = CSSPrimitiveValueBinding::CSS_URI;
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetColor(nsDOMCSSRGBColor* aColor)
|
|
{
|
|
MOZ_ASSERT(aColor, "Null RGBColor being set!");
|
|
|
|
Reset();
|
|
mValue.mColor = aColor;
|
|
if (mValue.mColor) {
|
|
NS_ADDREF(mValue.mColor);
|
|
mType = CSSPrimitiveValueBinding::CSS_RGBCOLOR;
|
|
}
|
|
else {
|
|
mType = CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetRect(nsDOMCSSRect* aRect)
|
|
{
|
|
MOZ_ASSERT(aRect, "Null rect being set!");
|
|
|
|
Reset();
|
|
mValue.mRect = aRect;
|
|
if (mValue.mRect) {
|
|
NS_ADDREF(mValue.mRect);
|
|
mType = CSSPrimitiveValueBinding::CSS_RECT;
|
|
}
|
|
else {
|
|
mType = CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::SetTime(float aValue)
|
|
{
|
|
Reset();
|
|
mValue.mFloat = aValue;
|
|
mType = CSSPrimitiveValueBinding::CSS_S;
|
|
}
|
|
|
|
void
|
|
nsROCSSPrimitiveValue::Reset()
|
|
{
|
|
switch (mType) {
|
|
case CSSPrimitiveValueBinding::CSS_IDENT:
|
|
break;
|
|
case CSSPrimitiveValueBinding::CSS_STRING:
|
|
case CSSPrimitiveValueBinding::CSS_ATTR:
|
|
case CSSPrimitiveValueBinding::CSS_COUNTER: // FIXME: Counter should use an object
|
|
NS_ASSERTION(mValue.mString, "Null string should never happen");
|
|
free(mValue.mString);
|
|
mValue.mString = nullptr;
|
|
break;
|
|
case CSSPrimitiveValueBinding::CSS_URI:
|
|
NS_IF_RELEASE(mValue.mURI);
|
|
break;
|
|
case CSSPrimitiveValueBinding::CSS_RECT:
|
|
NS_ASSERTION(mValue.mRect, "Null Rect should never happen");
|
|
NS_RELEASE(mValue.mRect);
|
|
break;
|
|
case CSSPrimitiveValueBinding::CSS_RGBCOLOR:
|
|
NS_ASSERTION(mValue.mColor, "Null RGBColor should never happen");
|
|
NS_RELEASE(mValue.mColor);
|
|
break;
|
|
}
|
|
|
|
mType = CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
|
|
uint16_t
|
|
nsROCSSPrimitiveValue::PrimitiveType()
|
|
{
|
|
// New value types were introduced but not added to CSS OM.
|
|
// Return CSS_UNKNOWN to avoid exposing CSS_TURN to content.
|
|
if (mType > CSSPrimitiveValueBinding::CSS_RGBCOLOR) {
|
|
if (mType == CSS_NUMBER_INT32 ||
|
|
mType == CSS_NUMBER_UINT32) {
|
|
return CSSPrimitiveValueBinding::CSS_NUMBER;
|
|
}
|
|
return CSSPrimitiveValueBinding::CSS_UNKNOWN;
|
|
}
|
|
return mType;
|
|
}
|