зеркало из https://github.com/mozilla/gecko-dev.git
94 строки
2.9 KiB
C++
94 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#include "nsRuleData.h"
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#include "nsAttrValueInlines.h"
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#include "nsCSSParser.h"
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#include "mozilla/Poison.h"
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#include <stdint.h>
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using namespace mozilla;
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inline size_t
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nsRuleData::GetPoisonOffset()
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{
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// Fill in mValueOffsets such that mValueStorage + mValueOffsets[i]
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// will yield the frame poison value for all uninitialized value
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// offsets.
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static_assert(sizeof(uintptr_t) == sizeof(size_t),
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"expect uintptr_t and size_t to be the same size");
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static_assert(uintptr_t(-1) > uintptr_t(0),
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"expect uintptr_t to be unsigned");
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static_assert(size_t(-1) > size_t(0), "expect size_t to be unsigned");
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uintptr_t framePoisonValue = mozPoisonValue();
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return size_t(framePoisonValue - uintptr_t(mValueStorage)) /
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sizeof(nsCSSValue);
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}
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nsRuleData::nsRuleData(uint32_t aSIDs,
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nsCSSValue* aValueStorage,
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nsPresContext* aContext,
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nsStyleContext* aStyleContext)
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: GenericSpecifiedValues(StyleBackendType::Gecko, aContext, aSIDs)
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, mStyleContext(aStyleContext)
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, mValueStorage(aValueStorage)
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{
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#ifndef MOZ_VALGRIND
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size_t framePoisonOffset = GetPoisonOffset();
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for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
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mValueOffsets[i] = framePoisonOffset;
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}
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#endif
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}
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void
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nsRuleData::SetFontFamily(const nsString& aValue)
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{
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nsCSSValue* family = ValueForFontFamily();
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nsCSSParser parser;
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parser.ParseFontFamilyListString(aValue, nullptr, 0, *family);
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}
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void
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nsRuleData::SetTextDecorationColorOverride()
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{
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nsCSSValue* decoration = ValueForTextDecorationLine();
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int32_t newValue = NS_STYLE_TEXT_DECORATION_LINE_OVERRIDE_ALL;
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if (decoration->GetUnit() == eCSSUnit_Enumerated) {
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newValue |= decoration->GetIntValue();
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}
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decoration->SetIntValue(newValue, eCSSUnit_Enumerated);
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}
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void
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nsRuleData::SetBackgroundImage(nsAttrValue& aValue)
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{
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nsCSSValue* backImage = ValueForBackgroundImage();
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// If the value is an image, or it is a URL and we attempted a load,
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// put it in the style tree.
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if (aValue.Type() == nsAttrValue::eURL) {
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aValue.LoadImage(mPresContext->Document());
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}
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if (aValue.Type() == nsAttrValue::eImage) {
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nsCSSValueList* list = backImage->SetListValue();
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list->mValue.SetImageValue(aValue.GetImageValue());
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}
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}
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#ifdef DEBUG
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nsRuleData::~nsRuleData()
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{
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#ifndef MOZ_VALGRIND
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// assert nothing in mSIDs has poison value
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size_t framePoisonOffset = GetPoisonOffset();
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for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
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MOZ_ASSERT(!(mSIDs & (1 << i)) || mValueOffsets[i] != framePoisonOffset,
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"value in SIDs was left with poison offset");
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}
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#endif
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}
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#endif
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