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gecko/layout/style/nsCSSValue.cpp
Mats Palmgren 8202799ad1 Bug 969756 - Add a code comment and a test. r=cam
2015-02-22 02:41:58 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* representation of simple property values within CSS declarations */
#include "nsCSSValue.h"
#include "mozilla/CSSStyleSheet.h"
#include "mozilla/Likely.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/css/ImageLoader.h"
#include "CSSCalc.h"
#include "gfxFontConstants.h"
#include "imgIRequest.h"
#include "imgRequestProxy.h"
#include "nsIDocument.h"
#include "nsIPrincipal.h"
#include "nsCSSProps.h"
#include "nsNetUtil.h"
#include "nsPresContext.h"
#include "nsStyleUtil.h"
#include "nsDeviceContext.h"
using namespace mozilla;
nsCSSValue::nsCSSValue(int32_t aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
MOZ_ASSERT(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
aUnit == eCSSUnit_EnumColor,
"not an int value");
if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
aUnit == eCSSUnit_EnumColor) {
mValue.mInt = aValue;
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
MOZ_ASSERT(eCSSUnit_Percent <= aUnit, "not a float value");
if (eCSSUnit_Percent <= aUnit) {
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(const nsString& aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
MOZ_ASSERT(UnitHasStringValue(), "not a string value");
if (UnitHasStringValue()) {
mValue.mString = BufferFromString(aValue).take();
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
MOZ_ASSERT(UnitHasArrayValue(), "bad unit");
mValue.mArray = aValue;
mValue.mArray->AddRef();
}
nsCSSValue::nsCSSValue(mozilla::css::URLValue* aValue)
: mUnit(eCSSUnit_URL)
{
mValue.mURL = aValue;
mValue.mURL->AddRef();
}
nsCSSValue::nsCSSValue(mozilla::css::ImageValue* aValue)
: mUnit(eCSSUnit_Image)
{
mValue.mImage = aValue;
mValue.mImage->AddRef();
}
nsCSSValue::nsCSSValue(nsCSSValueGradient* aValue)
: mUnit(eCSSUnit_Gradient)
{
mValue.mGradient = aValue;
mValue.mGradient->AddRef();
}
nsCSSValue::nsCSSValue(nsCSSValueTokenStream* aValue)
: mUnit(eCSSUnit_TokenStream)
{
mValue.mTokenStream = aValue;
mValue.mTokenStream->AddRef();
}
nsCSSValue::nsCSSValue(mozilla::css::GridTemplateAreasValue* aValue)
: mUnit(eCSSUnit_GridTemplateAreas)
{
mValue.mGridTemplateAreas = aValue;
mValue.mGridTemplateAreas->AddRef();
}
nsCSSValue::nsCSSValue(css::FontFamilyListRefCnt* aValue)
: mUnit(eCSSUnit_FontFamilyList)
{
mValue.mFontFamilyList = aValue;
mValue.mFontFamilyList->AddRef();
}
nsCSSValue::nsCSSValue(const nsCSSValue& aCopy)
: mUnit(aCopy.mUnit)
{
if (mUnit <= eCSSUnit_DummyInherit) {
// nothing to do, but put this important case first
}
else if (eCSSUnit_Percent <= mUnit) {
mValue.mFloat = aCopy.mValue.mFloat;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
else if (UnitHasStringValue()) {
mValue.mString = aCopy.mValue.mString;
mValue.mString->AddRef();
}
else if (eCSSUnit_Integer <= mUnit && mUnit <= eCSSUnit_EnumColor) {
mValue.mInt = aCopy.mValue.mInt;
}
else if (IsIntegerColorUnit()) {
mValue.mColor = aCopy.mValue.mColor;
}
else if (IsFloatColorUnit()) {
mValue.mFloatColor = aCopy.mValue.mFloatColor;
mValue.mFloatColor->AddRef();
}
else if (UnitHasArrayValue()) {
mValue.mArray = aCopy.mValue.mArray;
mValue.mArray->AddRef();
}
else if (eCSSUnit_URL == mUnit) {
mValue.mURL = aCopy.mValue.mURL;
mValue.mURL->AddRef();
}
else if (eCSSUnit_Image == mUnit) {
mValue.mImage = aCopy.mValue.mImage;
mValue.mImage->AddRef();
}
else if (eCSSUnit_Gradient == mUnit) {
mValue.mGradient = aCopy.mValue.mGradient;
mValue.mGradient->AddRef();
}
else if (eCSSUnit_TokenStream == mUnit) {
mValue.mTokenStream = aCopy.mValue.mTokenStream;
mValue.mTokenStream->AddRef();
}
else if (eCSSUnit_Pair == mUnit) {
mValue.mPair = aCopy.mValue.mPair;
mValue.mPair->AddRef();
}
else if (eCSSUnit_Triplet == mUnit) {
mValue.mTriplet = aCopy.mValue.mTriplet;
mValue.mTriplet->AddRef();
}
else if (eCSSUnit_Rect == mUnit) {
mValue.mRect = aCopy.mValue.mRect;
mValue.mRect->AddRef();
}
else if (eCSSUnit_List == mUnit) {
mValue.mList = aCopy.mValue.mList;
mValue.mList->AddRef();
}
else if (eCSSUnit_ListDep == mUnit) {
mValue.mListDependent = aCopy.mValue.mListDependent;
}
else if (eCSSUnit_SharedList == mUnit) {
mValue.mSharedList = aCopy.mValue.mSharedList;
mValue.mSharedList->AddRef();
}
else if (eCSSUnit_PairList == mUnit) {
mValue.mPairList = aCopy.mValue.mPairList;
mValue.mPairList->AddRef();
}
else if (eCSSUnit_PairListDep == mUnit) {
mValue.mPairListDependent = aCopy.mValue.mPairListDependent;
}
else if (eCSSUnit_GridTemplateAreas == mUnit) {
mValue.mGridTemplateAreas = aCopy.mValue.mGridTemplateAreas;
mValue.mGridTemplateAreas->AddRef();
}
else if (eCSSUnit_FontFamilyList == mUnit) {
mValue.mFontFamilyList = aCopy.mValue.mFontFamilyList;
mValue.mFontFamilyList->AddRef();
}
else {
MOZ_ASSERT(false, "unknown unit");
}
}
nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy)
{
if (this != &aCopy) {
Reset();
new (this) nsCSSValue(aCopy);
}
return *this;
}
bool nsCSSValue::operator==(const nsCSSValue& aOther) const
{
MOZ_ASSERT(mUnit != eCSSUnit_ListDep &&
aOther.mUnit != eCSSUnit_ListDep &&
mUnit != eCSSUnit_PairListDep &&
aOther.mUnit != eCSSUnit_PairListDep,
"don't use operator== with dependent lists");
if (mUnit == aOther.mUnit) {
if (mUnit <= eCSSUnit_DummyInherit) {
return true;
}
else if (UnitHasStringValue()) {
return (NS_strcmp(GetBufferValue(mValue.mString),
GetBufferValue(aOther.mValue.mString)) == 0);
}
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_EnumColor)) {
return mValue.mInt == aOther.mValue.mInt;
}
else if (IsIntegerColorUnit()) {
return mValue.mColor == aOther.mValue.mColor;
}
else if (IsFloatColorUnit()) {
return *mValue.mFloatColor == *aOther.mValue.mFloatColor;
}
else if (UnitHasArrayValue()) {
return *mValue.mArray == *aOther.mValue.mArray;
}
else if (eCSSUnit_URL == mUnit) {
return *mValue.mURL == *aOther.mValue.mURL;
}
else if (eCSSUnit_Image == mUnit) {
return *mValue.mImage == *aOther.mValue.mImage;
}
else if (eCSSUnit_Gradient == mUnit) {
return *mValue.mGradient == *aOther.mValue.mGradient;
}
else if (eCSSUnit_TokenStream == mUnit) {
return *mValue.mTokenStream == *aOther.mValue.mTokenStream;
}
else if (eCSSUnit_Pair == mUnit) {
return *mValue.mPair == *aOther.mValue.mPair;
}
else if (eCSSUnit_Triplet == mUnit) {
return *mValue.mTriplet == *aOther.mValue.mTriplet;
}
else if (eCSSUnit_Rect == mUnit) {
return *mValue.mRect == *aOther.mValue.mRect;
}
else if (eCSSUnit_List == mUnit) {
return nsCSSValueList::Equal(mValue.mList, aOther.mValue.mList);
}
else if (eCSSUnit_SharedList == mUnit) {
return *mValue.mSharedList == *aOther.mValue.mSharedList;
}
else if (eCSSUnit_PairList == mUnit) {
return nsCSSValuePairList::Equal(mValue.mPairList,
aOther.mValue.mPairList);
}
else if (eCSSUnit_GridTemplateAreas == mUnit) {
return *mValue.mGridTemplateAreas == *aOther.mValue.mGridTemplateAreas;
}
else if (eCSSUnit_FontFamilyList == mUnit) {
return *mValue.mFontFamilyList == *aOther.mValue.mFontFamilyList;
}
else {
return mValue.mFloat == aOther.mValue.mFloat;
}
}
return false;
}
double nsCSSValue::GetAngleValueInRadians() const
{
double angle = GetFloatValue();
switch (GetUnit()) {
case eCSSUnit_Radian: return angle;
case eCSSUnit_Turn: return angle * 2 * M_PI;
case eCSSUnit_Degree: return angle * M_PI / 180.0;
case eCSSUnit_Grad: return angle * M_PI / 200.0;
default:
MOZ_ASSERT(false, "unrecognized angular unit");
return 0.0;
}
}
imgRequestProxy* nsCSSValue::GetImageValue(nsIDocument* aDocument) const
{
MOZ_ASSERT(mUnit == eCSSUnit_Image, "not an Image value");
return mValue.mImage->mRequests.GetWeak(aDocument);
}
nscoord nsCSSValue::GetFixedLength(nsPresContext* aPresContext) const
{
MOZ_ASSERT(mUnit == eCSSUnit_PhysicalMillimeter,
"not a fixed length unit");
float inches = mValue.mFloat / MM_PER_INCH_FLOAT;
return NSToCoordFloorClamped(inches *
float(aPresContext->DeviceContext()->AppUnitsPerPhysicalInch()));
}
nscoord nsCSSValue::GetPixelLength() const
{
MOZ_ASSERT(IsPixelLengthUnit(), "not a fixed length unit");
double scaleFactor;
switch (mUnit) {
case eCSSUnit_Pixel: return nsPresContext::CSSPixelsToAppUnits(mValue.mFloat);
case eCSSUnit_Pica: scaleFactor = 16.0; break;
case eCSSUnit_Point: scaleFactor = 4/3.0; break;
case eCSSUnit_Inch: scaleFactor = 96.0; break;
case eCSSUnit_Millimeter: scaleFactor = 96/25.4; break;
case eCSSUnit_Centimeter: scaleFactor = 96/2.54; break;
default:
NS_ERROR("should never get here");
return 0;
}
return nsPresContext::CSSPixelsToAppUnits(float(mValue.mFloat*scaleFactor));
}
void nsCSSValue::DoReset()
{
if (UnitHasStringValue()) {
mValue.mString->Release();
} else if (IsFloatColorUnit()) {
mValue.mFloatColor->Release();
} else if (UnitHasArrayValue()) {
mValue.mArray->Release();
} else if (eCSSUnit_URL == mUnit) {
mValue.mURL->Release();
} else if (eCSSUnit_Image == mUnit) {
mValue.mImage->Release();
} else if (eCSSUnit_Gradient == mUnit) {
mValue.mGradient->Release();
} else if (eCSSUnit_TokenStream == mUnit) {
mValue.mTokenStream->Release();
} else if (eCSSUnit_Pair == mUnit) {
mValue.mPair->Release();
} else if (eCSSUnit_Triplet == mUnit) {
mValue.mTriplet->Release();
} else if (eCSSUnit_Rect == mUnit) {
mValue.mRect->Release();
} else if (eCSSUnit_List == mUnit) {
mValue.mList->Release();
} else if (eCSSUnit_SharedList == mUnit) {
mValue.mSharedList->Release();
} else if (eCSSUnit_PairList == mUnit) {
mValue.mPairList->Release();
} else if (eCSSUnit_GridTemplateAreas == mUnit) {
mValue.mGridTemplateAreas->Release();
} else if (eCSSUnit_FontFamilyList == mUnit) {
mValue.mFontFamilyList->Release();
}
mUnit = eCSSUnit_Null;
}
void nsCSSValue::SetIntValue(int32_t aValue, nsCSSUnit aUnit)
{
MOZ_ASSERT(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
aUnit == eCSSUnit_EnumColor,
"not an int value");
Reset();
if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
aUnit == eCSSUnit_EnumColor) {
mUnit = aUnit;
mValue.mInt = aValue;
}
}
void nsCSSValue::SetPercentValue(float aValue)
{
Reset();
mUnit = eCSSUnit_Percent;
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
{
MOZ_ASSERT(eCSSUnit_Number <= aUnit, "not a float value");
Reset();
if (eCSSUnit_Number <= aUnit) {
mUnit = aUnit;
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
}
void nsCSSValue::SetStringValue(const nsString& aValue,
nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
MOZ_ASSERT(UnitHasStringValue(), "not a string unit");
if (UnitHasStringValue()) {
mValue.mString = BufferFromString(aValue).take();
} else
mUnit = eCSSUnit_Null;
}
void nsCSSValue::SetColorValue(nscolor aValue)
{
SetIntegerColorValue(aValue, eCSSUnit_RGBAColor);
}
void nsCSSValue::SetIntegerColorValue(nscolor aValue, nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
MOZ_ASSERT(IsIntegerColorUnit(), "bad unit");
mValue.mColor = aValue;
}
void nsCSSValue::SetFloatColorValue(float aComponent1,
float aComponent2,
float aComponent3,
float aAlpha,
nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
MOZ_ASSERT(IsFloatColorUnit(), "bad unit");
mValue.mFloatColor =
new nsCSSValueFloatColor(aComponent1, aComponent2, aComponent3, aAlpha);
mValue.mFloatColor->AddRef();
}
void nsCSSValue::SetArrayValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
MOZ_ASSERT(UnitHasArrayValue(), "bad unit");
mValue.mArray = aValue;
mValue.mArray->AddRef();
}
void nsCSSValue::SetURLValue(mozilla::css::URLValue* aValue)
{
Reset();
mUnit = eCSSUnit_URL;
mValue.mURL = aValue;
mValue.mURL->AddRef();
}
void nsCSSValue::SetImageValue(mozilla::css::ImageValue* aValue)
{
Reset();
mUnit = eCSSUnit_Image;
mValue.mImage = aValue;
mValue.mImage->AddRef();
}
void nsCSSValue::SetGradientValue(nsCSSValueGradient* aValue)
{
Reset();
mUnit = eCSSUnit_Gradient;
mValue.mGradient = aValue;
mValue.mGradient->AddRef();
}
void nsCSSValue::SetTokenStreamValue(nsCSSValueTokenStream* aValue)
{
Reset();
mUnit = eCSSUnit_TokenStream;
mValue.mTokenStream = aValue;
mValue.mTokenStream->AddRef();
}
void nsCSSValue::SetGridTemplateAreas(mozilla::css::GridTemplateAreasValue* aValue)
{
Reset();
mUnit = eCSSUnit_GridTemplateAreas;
mValue.mGridTemplateAreas = aValue;
mValue.mGridTemplateAreas->AddRef();
}
void nsCSSValue::SetFontFamilyListValue(css::FontFamilyListRefCnt* aValue)
{
Reset();
mUnit = eCSSUnit_FontFamilyList;
mValue.mFontFamilyList = aValue;
mValue.mFontFamilyList->AddRef();
}
void nsCSSValue::SetPairValue(const nsCSSValuePair* aValue)
{
// pairs should not be used for null/inherit/initial values
MOZ_ASSERT(aValue &&
aValue->mXValue.GetUnit() != eCSSUnit_Null &&
aValue->mYValue.GetUnit() != eCSSUnit_Null &&
aValue->mXValue.GetUnit() != eCSSUnit_Inherit &&
aValue->mYValue.GetUnit() != eCSSUnit_Inherit &&
aValue->mXValue.GetUnit() != eCSSUnit_Initial &&
aValue->mYValue.GetUnit() != eCSSUnit_Initial &&
aValue->mXValue.GetUnit() != eCSSUnit_Unset &&
aValue->mYValue.GetUnit() != eCSSUnit_Unset,
"missing or inappropriate pair value");
Reset();
mUnit = eCSSUnit_Pair;
mValue.mPair = new nsCSSValuePair_heap(aValue->mXValue, aValue->mYValue);
mValue.mPair->AddRef();
}
void nsCSSValue::SetPairValue(const nsCSSValue& xValue,
const nsCSSValue& yValue)
{
MOZ_ASSERT(xValue.GetUnit() != eCSSUnit_Null &&
yValue.GetUnit() != eCSSUnit_Null &&
xValue.GetUnit() != eCSSUnit_Inherit &&
yValue.GetUnit() != eCSSUnit_Inherit &&
xValue.GetUnit() != eCSSUnit_Initial &&
yValue.GetUnit() != eCSSUnit_Initial &&
xValue.GetUnit() != eCSSUnit_Unset &&
yValue.GetUnit() != eCSSUnit_Unset,
"inappropriate pair value");
Reset();
mUnit = eCSSUnit_Pair;
mValue.mPair = new nsCSSValuePair_heap(xValue, yValue);
mValue.mPair->AddRef();
}
void nsCSSValue::SetTripletValue(const nsCSSValueTriplet* aValue)
{
// triplet should not be used for null/inherit/initial values
MOZ_ASSERT(aValue &&
aValue->mXValue.GetUnit() != eCSSUnit_Null &&
aValue->mYValue.GetUnit() != eCSSUnit_Null &&
aValue->mZValue.GetUnit() != eCSSUnit_Null &&
aValue->mXValue.GetUnit() != eCSSUnit_Inherit &&
aValue->mYValue.GetUnit() != eCSSUnit_Inherit &&
aValue->mZValue.GetUnit() != eCSSUnit_Inherit &&
aValue->mXValue.GetUnit() != eCSSUnit_Initial &&
aValue->mYValue.GetUnit() != eCSSUnit_Initial &&
aValue->mZValue.GetUnit() != eCSSUnit_Initial &&
aValue->mXValue.GetUnit() != eCSSUnit_Unset &&
aValue->mYValue.GetUnit() != eCSSUnit_Unset &&
aValue->mZValue.GetUnit() != eCSSUnit_Unset,
"missing or inappropriate triplet value");
Reset();
mUnit = eCSSUnit_Triplet;
mValue.mTriplet = new nsCSSValueTriplet_heap(aValue->mXValue, aValue->mYValue, aValue->mZValue);
mValue.mTriplet->AddRef();
}
void nsCSSValue::SetTripletValue(const nsCSSValue& xValue,
const nsCSSValue& yValue,
const nsCSSValue& zValue)
{
// Only allow Null for the z component
MOZ_ASSERT(xValue.GetUnit() != eCSSUnit_Null &&
yValue.GetUnit() != eCSSUnit_Null &&
xValue.GetUnit() != eCSSUnit_Inherit &&
yValue.GetUnit() != eCSSUnit_Inherit &&
zValue.GetUnit() != eCSSUnit_Inherit &&
xValue.GetUnit() != eCSSUnit_Initial &&
yValue.GetUnit() != eCSSUnit_Initial &&
zValue.GetUnit() != eCSSUnit_Initial &&
xValue.GetUnit() != eCSSUnit_Unset &&
yValue.GetUnit() != eCSSUnit_Unset &&
zValue.GetUnit() != eCSSUnit_Unset,
"inappropriate triplet value");
Reset();
mUnit = eCSSUnit_Triplet;
mValue.mTriplet = new nsCSSValueTriplet_heap(xValue, yValue, zValue);
mValue.mTriplet->AddRef();
}
nsCSSRect& nsCSSValue::SetRectValue()
{
Reset();
mUnit = eCSSUnit_Rect;
mValue.mRect = new nsCSSRect_heap;
mValue.mRect->AddRef();
return *mValue.mRect;
}
nsCSSValueList* nsCSSValue::SetListValue()
{
Reset();
mUnit = eCSSUnit_List;
mValue.mList = new nsCSSValueList_heap;
mValue.mList->AddRef();
return mValue.mList;
}
void nsCSSValue::SetSharedListValue(nsCSSValueSharedList* aList)
{
Reset();
mUnit = eCSSUnit_SharedList;
mValue.mSharedList = aList;
mValue.mSharedList->AddRef();
}
void nsCSSValue::SetDependentListValue(nsCSSValueList* aList)
{
Reset();
if (aList) {
mUnit = eCSSUnit_ListDep;
mValue.mListDependent = aList;
}
}
nsCSSValuePairList* nsCSSValue::SetPairListValue()
{
Reset();
mUnit = eCSSUnit_PairList;
mValue.mPairList = new nsCSSValuePairList_heap;
mValue.mPairList->AddRef();
return mValue.mPairList;
}
void nsCSSValue::SetDependentPairListValue(nsCSSValuePairList* aList)
{
Reset();
if (aList) {
mUnit = eCSSUnit_PairListDep;
mValue.mPairListDependent = aList;
}
}
void nsCSSValue::SetAutoValue()
{
Reset();
mUnit = eCSSUnit_Auto;
}
void nsCSSValue::SetInheritValue()
{
Reset();
mUnit = eCSSUnit_Inherit;
}
void nsCSSValue::SetInitialValue()
{
Reset();
mUnit = eCSSUnit_Initial;
}
void nsCSSValue::SetUnsetValue()
{
Reset();
mUnit = eCSSUnit_Unset;
}
void nsCSSValue::SetNoneValue()
{
Reset();
mUnit = eCSSUnit_None;
}
void nsCSSValue::SetAllValue()
{
Reset();
mUnit = eCSSUnit_All;
}
void nsCSSValue::SetNormalValue()
{
Reset();
mUnit = eCSSUnit_Normal;
}
void nsCSSValue::SetSystemFontValue()
{
Reset();
mUnit = eCSSUnit_System_Font;
}
void nsCSSValue::SetDummyValue()
{
Reset();
mUnit = eCSSUnit_Dummy;
}
void nsCSSValue::SetDummyInheritValue()
{
Reset();
mUnit = eCSSUnit_DummyInherit;
}
void nsCSSValue::StartImageLoad(nsIDocument* aDocument) const
{
MOZ_ASSERT(eCSSUnit_URL == mUnit, "Not a URL value!");
mozilla::css::ImageValue* image =
new mozilla::css::ImageValue(mValue.mURL->GetURI(),
mValue.mURL->mString,
mValue.mURL->mReferrer,
mValue.mURL->mOriginPrincipal,
aDocument);
nsCSSValue* writable = const_cast<nsCSSValue*>(this);
writable->SetImageValue(image);
}
nscolor nsCSSValue::GetColorValue() const
{
MOZ_ASSERT(IsNumericColorUnit(), "not a color value");
if (IsFloatColorUnit()) {
return mValue.mFloatColor->GetColorValue(mUnit);
}
return mValue.mColor;
}
bool nsCSSValue::IsNonTransparentColor() const
{
// We have the value in the form it was specified in at this point, so we
// have to look for both the keyword 'transparent' and its equivalent in
// rgba notation.
nsDependentString buf;
return
(IsIntegerColorUnit() && NS_GET_A(GetColorValue()) > 0) ||
(IsFloatColorUnit() && mValue.mFloatColor->IsNonTransparentColor()) ||
(mUnit == eCSSUnit_Ident &&
!nsGkAtoms::transparent->Equals(GetStringValue(buf))) ||
(mUnit == eCSSUnit_EnumColor);
}
nsCSSValue::Array*
nsCSSValue::InitFunction(nsCSSKeyword aFunctionId, uint32_t aNumArgs)
{
nsRefPtr<nsCSSValue::Array> func = Array::Create(aNumArgs + 1);
func->Item(0).SetIntValue(aFunctionId, eCSSUnit_Enumerated);
SetArrayValue(func, eCSSUnit_Function);
return func;
}
bool
nsCSSValue::EqualsFunction(nsCSSKeyword aFunctionId) const
{
if (mUnit != eCSSUnit_Function) {
return false;
}
nsCSSValue::Array* func = mValue.mArray;
MOZ_ASSERT(func && func->Count() >= 1 &&
func->Item(0).GetUnit() == eCSSUnit_Enumerated,
"illegally structured function value");
nsCSSKeyword thisFunctionId = func->Item(0).GetKeywordValue();
return thisFunctionId == aFunctionId;
}
// static
already_AddRefed<nsStringBuffer>
nsCSSValue::BufferFromString(const nsString& aValue)
{
nsRefPtr<nsStringBuffer> buffer = nsStringBuffer::FromString(aValue);
if (buffer) {
return buffer.forget();
}
nsString::size_type length = aValue.Length();
// NOTE: Alloc prouduces a new, already-addref'd (refcnt = 1) buffer.
// NOTE: String buffer allocation is currently fallible.
size_t sz = (length + 1) * sizeof(char16_t);
buffer = nsStringBuffer::Alloc(sz);
if (MOZ_UNLIKELY(!buffer)) {
NS_ABORT_OOM(sz);
}
char16_t* data = static_cast<char16_t*>(buffer->Data());
nsCharTraits<char16_t>::copy(data, aValue.get(), length);
// Null-terminate.
data[length] = 0;
return buffer.forget();
}
namespace {
struct CSSValueSerializeCalcOps {
CSSValueSerializeCalcOps(nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization)
: mProperty(aProperty),
mResult(aResult),
mValueSerialization(aSerialization)
{
}
typedef nsCSSValue input_type;
typedef nsCSSValue::Array input_array_type;
static nsCSSUnit GetUnit(const input_type& aValue) {
return aValue.GetUnit();
}
void Append(const char* aString)
{
mResult.AppendASCII(aString);
}
void AppendLeafValue(const input_type& aValue)
{
MOZ_ASSERT(aValue.GetUnit() == eCSSUnit_Percent || aValue.IsLengthUnit(),
"unexpected unit");
aValue.AppendToString(mProperty, mResult, mValueSerialization);
}
void AppendNumber(const input_type& aValue)
{
MOZ_ASSERT(aValue.GetUnit() == eCSSUnit_Number, "unexpected unit");
aValue.AppendToString(mProperty, mResult, mValueSerialization);
}
private:
nsCSSProperty mProperty;
nsAString &mResult;
nsCSSValue::Serialization mValueSerialization;
};
} // anonymous namespace
void
nsCSSValue::AppendPolygonToString(nsCSSProperty aProperty, nsAString& aResult,
Serialization aSerialization) const
{
const nsCSSValue::Array* array = GetArrayValue();
MOZ_ASSERT(array->Count() > 1 && array->Count() <= 3,
"Polygons must have name and at least one more value.");
// When the array has 2 elements, the item on index 1 is the coordinate
// pair list.
// When the array has 3 elements, the item on index 1 is a fill-rule
// and item on index 2 is the coordinate pair list.
size_t index = 1;
if (array->Count() == 3) {
const nsCSSValue& fillRuleValue = array->Item(index);
MOZ_ASSERT(fillRuleValue.GetUnit() == eCSSUnit_Enumerated,
"Expected polygon fill rule.");
int32_t fillRule = fillRuleValue.GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(fillRule,
nsCSSProps::kFillRuleKTable),
aResult);
aResult.AppendLiteral(", ");
++index;
}
array->Item(index).AppendToString(aProperty, aResult, aSerialization);
}
inline void
nsCSSValue::AppendPositionCoordinateToString(
const nsCSSValue& aValue, nsCSSProperty aProperty,
nsAString& aResult, Serialization aSerialization) const
{
if (aValue.GetUnit() == eCSSUnit_Enumerated) {
int32_t intValue = aValue.GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kShapeRadiusKTable), aResult);
} else {
aValue.AppendToString(aProperty, aResult, aSerialization);
}
}
void
nsCSSValue::AppendCircleOrEllipseToString(nsCSSKeyword aFunctionId,
nsCSSProperty aProperty,
nsAString& aResult,
Serialization aSerialization) const
{
const nsCSSValue::Array* array = GetArrayValue();
size_t count = aFunctionId == eCSSKeyword_circle ? 2 : 3;
MOZ_ASSERT(array->Count() == count + 1, "wrong number of arguments");
bool hasRadii = array->Item(1).GetUnit() != eCSSUnit_Null;
AppendPositionCoordinateToString(array->Item(1), aProperty,
aResult, aSerialization);
if (hasRadii && aFunctionId == eCSSKeyword_ellipse) {
aResult.Append(' ');
AppendPositionCoordinateToString(array->Item(2), aProperty,
aResult, aSerialization);
}
// Any position specified?
if (array->Item(count).GetUnit() != eCSSUnit_Array) {
MOZ_ASSERT(array->Item(count).GetUnit() == eCSSUnit_Null,
"unexpected value");
return;
}
if (hasRadii) {
aResult.Append(' ');
}
aResult.AppendLiteral("at ");
array->Item(count).AppendToString(eCSSProperty_background_position,
aResult, aSerialization);
}
// Helper to append |aString| with the shorthand sides notation used in e.g.
// 'padding'. |aProperties| and |aValues| are expected to have 4 elements.
/*static*/ void
nsCSSValue::AppendSidesShorthandToString(const nsCSSProperty aProperties[],
const nsCSSValue* aValues[],
nsAString& aString,
nsCSSValue::Serialization
aSerialization)
{
const nsCSSValue& value1 = *aValues[0];
const nsCSSValue& value2 = *aValues[1];
const nsCSSValue& value3 = *aValues[2];
const nsCSSValue& value4 = *aValues[3];
MOZ_ASSERT(value1.GetUnit() != eCSSUnit_Null, "null value 1");
value1.AppendToString(aProperties[0], aString, aSerialization);
if (value1 != value2 || value1 != value3 || value1 != value4) {
aString.Append(char16_t(' '));
MOZ_ASSERT(value2.GetUnit() != eCSSUnit_Null, "null value 2");
value2.AppendToString(aProperties[1], aString, aSerialization);
if (value1 != value3 || value2 != value4) {
aString.Append(char16_t(' '));
MOZ_ASSERT(value3.GetUnit() != eCSSUnit_Null, "null value 3");
value3.AppendToString(aProperties[2], aString, aSerialization);
if (value2 != value4) {
aString.Append(char16_t(' '));
MOZ_ASSERT(value4.GetUnit() != eCSSUnit_Null, "null value 4");
value4.AppendToString(aProperties[3], aString, aSerialization);
}
}
}
}
/*static*/ void
nsCSSValue::AppendBasicShapeRadiusToString(const nsCSSProperty aProperties[],
const nsCSSValue* aValues[],
nsAString& aResult,
Serialization aSerialization)
{
bool needY = false;
const nsCSSValue* xVals[4];
const nsCSSValue* yVals[4];
for (int i = 0; i < 4; i++) {
if (aValues[i]->GetUnit() == eCSSUnit_Pair) {
needY = true;
xVals[i] = &aValues[i]->GetPairValue().mXValue;
yVals[i] = &aValues[i]->GetPairValue().mYValue;
} else {
xVals[i] = yVals[i] = aValues[i];
}
}
AppendSidesShorthandToString(aProperties, xVals, aResult, aSerialization);
if (needY) {
aResult.AppendLiteral(" / ");
AppendSidesShorthandToString(aProperties, yVals, aResult, aSerialization);
}
}
void
nsCSSValue::AppendInsetToString(nsCSSProperty aProperty, nsAString& aResult,
Serialization aSerialization) const
{
const nsCSSValue::Array* array = GetArrayValue();
MOZ_ASSERT(array->Count() == 6,
"inset function has wrong number of arguments");
if (array->Item(1).GetUnit() != eCSSUnit_Null) {
array->Item(1).AppendToString(aProperty, aResult, aSerialization);
if (array->Item(2).GetUnit() != eCSSUnit_Null) {
aResult.Append(' ');
array->Item(2).AppendToString(aProperty, aResult, aSerialization);
if (array->Item(3).GetUnit() != eCSSUnit_Null) {
aResult.Append(' ');
array->Item(3).AppendToString(aProperty, aResult, aSerialization);
if (array->Item(4).GetUnit() != eCSSUnit_Null) {
aResult.Append(' ');
array->Item(4).AppendToString(aProperty, aResult, aSerialization);
}
}
}
}
if (array->Item(5).GetUnit() == eCSSUnit_Array) {
const nsCSSProperty* subprops =
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_radius);
const nsCSSValue::Array* radius = array->Item(5).GetArrayValue();
MOZ_ASSERT(radius->Count() == 4, "expected 4 radii values");
const nsCSSValue* vals[4] = {
&(radius->Item(0)),
&(radius->Item(1)),
&(radius->Item(2)),
&(radius->Item(3))
};
aResult.AppendLiteral(" round ");
AppendBasicShapeRadiusToString(subprops, vals, aResult,
aSerialization);
} else {
MOZ_ASSERT(array->Item(5).GetUnit() == eCSSUnit_Null,
"unexpected value");
}
}
void
nsCSSValue::AppendToString(nsCSSProperty aProperty, nsAString& aResult,
Serialization aSerialization) const
{
// eCSSProperty_UNKNOWN gets used for some recursive calls below.
MOZ_ASSERT((0 <= aProperty &&
aProperty <= eCSSProperty_COUNT_no_shorthands) ||
aProperty == eCSSProperty_UNKNOWN,
"property ID out of range");
nsCSSUnit unit = GetUnit();
if (unit == eCSSUnit_Null) {
return;
}
if (eCSSUnit_String <= unit && unit <= eCSSUnit_Attr) {
if (unit == eCSSUnit_Attr) {
aResult.AppendLiteral("attr(");
}
nsAutoString buffer;
GetStringValue(buffer);
if (unit == eCSSUnit_String) {
nsStyleUtil::AppendEscapedCSSString(buffer, aResult);
} else {
nsStyleUtil::AppendEscapedCSSIdent(buffer, aResult);
}
}
else if (eCSSUnit_Array <= unit && unit <= eCSSUnit_Symbols) {
switch (unit) {
case eCSSUnit_Counter: aResult.AppendLiteral("counter("); break;
case eCSSUnit_Counters: aResult.AppendLiteral("counters("); break;
case eCSSUnit_Cubic_Bezier: aResult.AppendLiteral("cubic-bezier("); break;
case eCSSUnit_Steps: aResult.AppendLiteral("steps("); break;
case eCSSUnit_Symbols: aResult.AppendLiteral("symbols("); break;
default: break;
}
nsCSSValue::Array *array = GetArrayValue();
bool mark = false;
for (size_t i = 0, i_end = array->Count(); i < i_end; ++i) {
if (mark && array->Item(i).GetUnit() != eCSSUnit_Null) {
if ((unit == eCSSUnit_Array &&
eCSSProperty_transition_timing_function != aProperty) ||
unit == eCSSUnit_Symbols)
aResult.Append(' ');
else
aResult.AppendLiteral(", ");
}
if (unit == eCSSUnit_Steps && i == 1) {
MOZ_ASSERT(array->Item(i).GetUnit() == eCSSUnit_Enumerated &&
(array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_START ||
array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_END),
"unexpected value");
if (array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_START) {
aResult.AppendLiteral("start");
} else {
aResult.AppendLiteral("end");
}
continue;
}
if (unit == eCSSUnit_Symbols && i == 0) {
MOZ_ASSERT(array->Item(i).GetUnit() == eCSSUnit_Enumerated,
"unexpected value");
int32_t system = array->Item(i).GetIntValue();
if (system != NS_STYLE_COUNTER_SYSTEM_SYMBOLIC) {
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(
system, nsCSSProps::kCounterSystemKTable), aResult);
mark = true;
}
continue;
}
nsCSSProperty prop =
((eCSSUnit_Counter <= unit && unit <= eCSSUnit_Counters) &&
i == array->Count() - 1)
? eCSSProperty_list_style_type : aProperty;
if (array->Item(i).GetUnit() != eCSSUnit_Null) {
array->Item(i).AppendToString(prop, aResult, aSerialization);
mark = true;
}
}
if (eCSSUnit_Array == unit &&
aProperty == eCSSProperty_transition_timing_function) {
aResult.Append(')');
}
}
/* Although Function is backed by an Array, we'll handle it separately
* because it's a bit quirky.
*/
else if (eCSSUnit_Function == unit) {
const nsCSSValue::Array* array = GetArrayValue();
MOZ_ASSERT(array->Count() >= 1,
"Functions must have at least one element for the name.");
const nsCSSValue& functionName = array->Item(0);
MOZ_ASSERT(functionName.GetUnit() == eCSSUnit_Enumerated,
"Functions must have an enumerated name.");
/* Append the function name. */
// The first argument is always of nsCSSKeyword type.
const nsCSSKeyword functionId = functionName.GetKeywordValue();
NS_ConvertASCIItoUTF16 ident(nsCSSKeywords::GetStringValue(functionId));
// Bug 721136: Normalize the identifier to lowercase, except that things
// like scaleX should have the last character capitalized. This matches
// what other browsers do.
switch (functionId) {
case eCSSKeyword_rotatex:
case eCSSKeyword_scalex:
case eCSSKeyword_skewx:
case eCSSKeyword_translatex:
ident.Replace(ident.Length() - 1, 1, char16_t('X'));
break;
case eCSSKeyword_rotatey:
case eCSSKeyword_scaley:
case eCSSKeyword_skewy:
case eCSSKeyword_translatey:
ident.Replace(ident.Length() - 1, 1, char16_t('Y'));
break;
case eCSSKeyword_rotatez:
case eCSSKeyword_scalez:
case eCSSKeyword_translatez:
ident.Replace(ident.Length() - 1, 1, char16_t('Z'));
break;
default:
break;
}
nsStyleUtil::AppendEscapedCSSIdent(ident, aResult);
aResult.Append('(');
switch (functionId) {
case eCSSKeyword_polygon:
AppendPolygonToString(aProperty, aResult, aSerialization);
break;
case eCSSKeyword_circle:
case eCSSKeyword_ellipse:
AppendCircleOrEllipseToString(functionId, aProperty, aResult,
aSerialization);
break;
case eCSSKeyword_inset:
AppendInsetToString(aProperty, aResult, aSerialization);
break;
default: {
// Now, step through the function contents, writing each of
// them as we go.
for (size_t index = 1; index < array->Count(); ++index) {
array->Item(index).AppendToString(aProperty, aResult,
aSerialization);
/* If we're not at the final element, append a comma. */
if (index + 1 != array->Count())
aResult.AppendLiteral(", ");
}
}
}
/* Finally, append the closing parenthesis. */
aResult.Append(')');
}
else if (IsCalcUnit()) {
MOZ_ASSERT(GetUnit() == eCSSUnit_Calc, "unexpected unit");
CSSValueSerializeCalcOps ops(aProperty, aResult, aSerialization);
css::SerializeCalc(*this, ops);
}
else if (eCSSUnit_Integer == unit) {
aResult.AppendInt(GetIntValue(), 10);
}
else if (eCSSUnit_Enumerated == unit) {
int32_t intValue = GetIntValue();
switch(aProperty) {
case eCSSProperty_text_combine_upright:
if (intValue <= NS_STYLE_TEXT_COMBINE_UPRIGHT_ALL) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else if (intValue == NS_STYLE_TEXT_COMBINE_UPRIGHT_DIGITS_2) {
aResult.AppendLiteral("digits 2");
} else if (intValue == NS_STYLE_TEXT_COMBINE_UPRIGHT_DIGITS_3) {
aResult.AppendLiteral("digits 3");
} else {
aResult.AppendLiteral("digits 4");
}
break;
case eCSSProperty_text_decoration_line:
if (NS_STYLE_TEXT_DECORATION_LINE_NONE == intValue) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else {
// Ignore the "override all" internal value.
// (It doesn't have a string representation.)
intValue &= ~NS_STYLE_TEXT_DECORATION_LINE_OVERRIDE_ALL;
nsStyleUtil::AppendBitmaskCSSValue(
aProperty, intValue,
NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE,
NS_STYLE_TEXT_DECORATION_LINE_PREF_ANCHORS,
aResult);
}
break;
case eCSSProperty_marks:
if (intValue == NS_STYLE_PAGE_MARKS_NONE) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else {
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_STYLE_PAGE_MARKS_CROP,
NS_STYLE_PAGE_MARKS_REGISTER,
aResult);
}
break;
case eCSSProperty_paint_order:
static_assert
(NS_STYLE_PAINT_ORDER_BITWIDTH * NS_STYLE_PAINT_ORDER_LAST_VALUE <= 8,
"SVGStyleStruct::mPaintOrder and the following cast not big enough");
nsStyleUtil::AppendPaintOrderValue(static_cast<uint8_t>(GetIntValue()),
aResult);
break;
case eCSSProperty_font_synthesis:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_FONT_SYNTHESIS_WEIGHT,
NS_FONT_SYNTHESIS_STYLE,
aResult);
break;
case eCSSProperty_font_variant_east_asian:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_FONT_VARIANT_EAST_ASIAN_JIS78,
NS_FONT_VARIANT_EAST_ASIAN_RUBY,
aResult);
break;
case eCSSProperty_font_variant_ligatures:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_FONT_VARIANT_LIGATURES_NONE,
NS_FONT_VARIANT_LIGATURES_NO_CONTEXTUAL,
aResult);
break;
case eCSSProperty_font_variant_numeric:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_FONT_VARIANT_NUMERIC_LINING,
NS_FONT_VARIANT_NUMERIC_ORDINAL,
aResult);
break;
case eCSSProperty_grid_auto_flow:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_STYLE_GRID_AUTO_FLOW_ROW,
NS_STYLE_GRID_AUTO_FLOW_DENSE,
aResult);
break;
case eCSSProperty_grid_column_start:
case eCSSProperty_grid_column_end:
case eCSSProperty_grid_row_start:
case eCSSProperty_grid_row_end:
// "span" is the only enumerated-unit value for these properties
aResult.AppendLiteral("span");
break;
case eCSSProperty_touch_action:
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_STYLE_TOUCH_ACTION_NONE,
NS_STYLE_TOUCH_ACTION_MANIPULATION,
aResult);
break;
case eCSSProperty_clip_path:
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kClipShapeSizingKTable),
aResult);
break;
default:
const nsAFlatCString& name = nsCSSProps::LookupPropertyValue(aProperty, intValue);
AppendASCIItoUTF16(name, aResult);
break;
}
}
else if (eCSSUnit_EnumColor == unit) {
// we can lookup the property in the ColorTable and then
// get a string mapping the name
nsAutoCString str;
if (nsCSSProps::GetColorName(GetIntValue(), str)){
AppendASCIItoUTF16(str, aResult);
} else {
MOZ_ASSERT(false, "bad color value");
}
}
else if (IsNumericColorUnit(unit)) {
if (aSerialization == eNormalized ||
unit == eCSSUnit_RGBColor ||
unit == eCSSUnit_RGBAColor) {
nscolor color = GetColorValue();
if (aSerialization == eNormalized &&
color == NS_RGBA(0, 0, 0, 0)) {
// Use the strictest match for 'transparent' so we do correct
// round-tripping of all other rgba() values.
aResult.AppendLiteral("transparent");
} else {
uint8_t a = NS_GET_A(color);
bool showAlpha =
(aSerialization == eNormalized && a < 255) ||
(aSerialization == eAuthorSpecified &&
unit == eCSSUnit_RGBAColor);
if (showAlpha) {
aResult.AppendLiteral("rgba(");
} else {
aResult.AppendLiteral("rgb(");
}
NS_NAMED_LITERAL_STRING(comma, ", ");
aResult.AppendInt(NS_GET_R(color), 10);
aResult.Append(comma);
aResult.AppendInt(NS_GET_G(color), 10);
aResult.Append(comma);
aResult.AppendInt(NS_GET_B(color), 10);
if (showAlpha) {
aResult.Append(comma);
aResult.AppendFloat(nsStyleUtil::ColorComponentToFloat(a));
}
aResult.Append(char16_t(')'));
}
} else if (eCSSUnit_HexColor == unit) {
nscolor color = GetColorValue();
aResult.Append('#');
aResult.AppendPrintf("%02x", NS_GET_R(color));
aResult.AppendPrintf("%02x", NS_GET_G(color));
aResult.AppendPrintf("%02x", NS_GET_B(color));
} else if (eCSSUnit_ShortHexColor == unit) {
nscolor color = GetColorValue();
aResult.Append('#');
aResult.AppendInt(NS_GET_R(color) / 0x11, 16);
aResult.AppendInt(NS_GET_G(color) / 0x11, 16);
aResult.AppendInt(NS_GET_B(color) / 0x11, 16);
} else {
MOZ_ASSERT(IsFloatColorUnit());
mValue.mFloatColor->AppendToString(unit, aResult);
}
}
else if (eCSSUnit_URL == unit || eCSSUnit_Image == unit) {
aResult.AppendLiteral("url(");
nsStyleUtil::AppendEscapedCSSString(
nsDependentString(GetOriginalURLValue()), aResult);
aResult.Append(')');
}
else if (eCSSUnit_Element == unit) {
aResult.AppendLiteral("-moz-element(#");
nsAutoString tmpStr;
GetStringValue(tmpStr);
nsStyleUtil::AppendEscapedCSSIdent(tmpStr, aResult);
aResult.Append(')');
}
else if (eCSSUnit_Percent == unit) {
aResult.AppendFloat(GetPercentValue() * 100.0f);
}
else if (eCSSUnit_Percent < unit) { // length unit
aResult.AppendFloat(GetFloatValue());
}
else if (eCSSUnit_Gradient == unit) {
nsCSSValueGradient* gradient = GetGradientValue();
if (gradient->mIsLegacySyntax) {
aResult.AppendLiteral("-moz-");
}
if (gradient->mIsRepeating) {
aResult.AppendLiteral("repeating-");
}
if (gradient->mIsRadial) {
aResult.AppendLiteral("radial-gradient(");
} else {
aResult.AppendLiteral("linear-gradient(");
}
bool needSep = false;
if (gradient->mIsRadial && !gradient->mIsLegacySyntax) {
if (!gradient->mIsExplicitSize) {
if (gradient->GetRadialShape().GetUnit() != eCSSUnit_None) {
MOZ_ASSERT(gradient->GetRadialShape().GetUnit() ==
eCSSUnit_Enumerated,
"bad unit for radial gradient shape");
int32_t intValue = gradient->GetRadialShape().GetIntValue();
MOZ_ASSERT(intValue != NS_STYLE_GRADIENT_SHAPE_LINEAR,
"radial gradient with linear shape?!");
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientShapeKTable),
aResult);
needSep = true;
}
if (gradient->GetRadialSize().GetUnit() != eCSSUnit_None) {
if (needSep) {
aResult.Append(' ');
}
MOZ_ASSERT(gradient->GetRadialSize().GetUnit() == eCSSUnit_Enumerated,
"bad unit for radial gradient size");
int32_t intValue = gradient->GetRadialSize().GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientSizeKTable),
aResult);
needSep = true;
}
} else {
MOZ_ASSERT(gradient->GetRadiusX().GetUnit() != eCSSUnit_None,
"bad unit for radial gradient explicit size");
gradient->GetRadiusX().AppendToString(aProperty, aResult,
aSerialization);
if (gradient->GetRadiusY().GetUnit() != eCSSUnit_None) {
aResult.Append(' ');
gradient->GetRadiusY().AppendToString(aProperty, aResult,
aSerialization);
}
needSep = true;
}
}
if (!gradient->mIsRadial && !gradient->mIsLegacySyntax) {
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None ||
gradient->mBgPos.mYValue.GetUnit() != eCSSUnit_None) {
MOZ_ASSERT(gradient->mAngle.GetUnit() == eCSSUnit_None);
MOZ_ASSERT(gradient->mBgPos.mXValue.GetUnit() == eCSSUnit_Enumerated &&
gradient->mBgPos.mYValue.GetUnit() == eCSSUnit_Enumerated,
"unexpected unit");
aResult.AppendLiteral("to");
if (!(gradient->mBgPos.mXValue.GetIntValue() & NS_STYLE_BG_POSITION_CENTER)) {
aResult.Append(' ');
gradient->mBgPos.mXValue.AppendToString(eCSSProperty_background_position,
aResult, aSerialization);
}
if (!(gradient->mBgPos.mYValue.GetIntValue() & NS_STYLE_BG_POSITION_CENTER)) {
aResult.Append(' ');
gradient->mBgPos.mYValue.AppendToString(eCSSProperty_background_position,
aResult, aSerialization);
}
needSep = true;
} else if (gradient->mAngle.GetUnit() != eCSSUnit_None) {
gradient->mAngle.AppendToString(aProperty, aResult, aSerialization);
needSep = true;
}
} else if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None ||
gradient->mBgPos.mYValue.GetUnit() != eCSSUnit_None ||
gradient->mAngle.GetUnit() != eCSSUnit_None) {
if (needSep) {
aResult.Append(' ');
}
if (gradient->mIsRadial && !gradient->mIsLegacySyntax) {
aResult.AppendLiteral("at ");
}
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mXValue.AppendToString(eCSSProperty_background_position,
aResult, aSerialization);
aResult.Append(' ');
}
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mYValue.AppendToString(eCSSProperty_background_position,
aResult, aSerialization);
aResult.Append(' ');
}
if (gradient->mAngle.GetUnit() != eCSSUnit_None) {
MOZ_ASSERT(gradient->mIsLegacySyntax,
"angle is allowed only for legacy syntax");
gradient->mAngle.AppendToString(aProperty, aResult, aSerialization);
}
needSep = true;
}
if (gradient->mIsRadial && gradient->mIsLegacySyntax &&
(gradient->GetRadialShape().GetUnit() != eCSSUnit_None ||
gradient->GetRadialSize().GetUnit() != eCSSUnit_None)) {
MOZ_ASSERT(!gradient->mIsExplicitSize);
if (needSep) {
aResult.AppendLiteral(", ");
}
if (gradient->GetRadialShape().GetUnit() != eCSSUnit_None) {
MOZ_ASSERT(gradient->GetRadialShape().GetUnit() == eCSSUnit_Enumerated,
"bad unit for radial gradient shape");
int32_t intValue = gradient->GetRadialShape().GetIntValue();
MOZ_ASSERT(intValue != NS_STYLE_GRADIENT_SHAPE_LINEAR,
"radial gradient with linear shape?!");
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientShapeKTable),
aResult);
aResult.Append(' ');
}
if (gradient->GetRadialSize().GetUnit() != eCSSUnit_None) {
MOZ_ASSERT(gradient->GetRadialSize().GetUnit() == eCSSUnit_Enumerated,
"bad unit for radial gradient size");
int32_t intValue = gradient->GetRadialSize().GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientSizeKTable),
aResult);
}
needSep = true;
}
if (needSep) {
aResult.AppendLiteral(", ");
}
for (uint32_t i = 0 ;;) {
bool isInterpolationHint = gradient->mStops[i].mIsInterpolationHint;
if (!isInterpolationHint) {
gradient->mStops[i].mColor.AppendToString(aProperty, aResult,
aSerialization);
}
if (gradient->mStops[i].mLocation.GetUnit() != eCSSUnit_None) {
if (!isInterpolationHint) {
aResult.Append(' ');
}
gradient->mStops[i].mLocation.AppendToString(aProperty, aResult,
aSerialization);
}
if (++i == gradient->mStops.Length()) {
break;
}
aResult.AppendLiteral(", ");
}
aResult.Append(')');
} else if (eCSSUnit_TokenStream == unit) {
nsCSSProperty shorthand = mValue.mTokenStream->mShorthandPropertyID;
if (shorthand == eCSSProperty_UNKNOWN ||
nsCSSProps::PropHasFlags(shorthand, CSS_PROPERTY_IS_ALIAS) ||
aProperty == eCSSProperty__x_system_font) {
// We treat serialization of aliases like '-moz-transform' as a special
// case, since it really wants to be serialized as if it were a longhand
// even though it is implemented as a shorthand. We also need to
// serialize -x-system-font's token stream value, even though the
// value is set through the font shorthand. This serialization
// of -x-system-font is needed when we need to output the
// 'font' shorthand followed by a number of overriding font
// longhand components.
aResult.Append(mValue.mTokenStream->mTokenStream);
}
} else if (eCSSUnit_Pair == unit) {
if (eCSSProperty_font_variant_alternates == aProperty) {
int32_t intValue = GetPairValue().mXValue.GetIntValue();
nsAutoString out;
// simple, enumerated values
nsStyleUtil::AppendBitmaskCSSValue(aProperty,
intValue & NS_FONT_VARIANT_ALTERNATES_ENUMERATED_MASK,
NS_FONT_VARIANT_ALTERNATES_HISTORICAL,
NS_FONT_VARIANT_ALTERNATES_HISTORICAL,
out);
// functional values
const nsCSSValueList *list = GetPairValue().mYValue.GetListValue();
nsAutoTArray<gfxAlternateValue,8> altValues;
nsStyleUtil::ComputeFunctionalAlternates(list, altValues);
nsStyleUtil::SerializeFunctionalAlternates(altValues, out);
aResult.Append(out);
} else {
GetPairValue().AppendToString(aProperty, aResult, aSerialization);
}
} else if (eCSSUnit_Triplet == unit) {
GetTripletValue().AppendToString(aProperty, aResult, aSerialization);
} else if (eCSSUnit_Rect == unit) {
GetRectValue().AppendToString(aProperty, aResult, aSerialization);
} else if (eCSSUnit_List == unit || eCSSUnit_ListDep == unit) {
GetListValue()->AppendToString(aProperty, aResult, aSerialization);
} else if (eCSSUnit_SharedList == unit) {
GetSharedListValue()->AppendToString(aProperty, aResult, aSerialization);
} else if (eCSSUnit_PairList == unit || eCSSUnit_PairListDep == unit) {
switch (aProperty) {
case eCSSProperty_font_feature_settings:
nsStyleUtil::AppendFontFeatureSettings(*this, aResult);
break;
default:
GetPairListValue()->AppendToString(aProperty, aResult, aSerialization);
break;
}
} else if (eCSSUnit_GridTemplateAreas == unit) {
const mozilla::css::GridTemplateAreasValue* areas = GetGridTemplateAreas();
MOZ_ASSERT(!areas->mTemplates.IsEmpty(),
"Unexpected empty array in GridTemplateAreasValue");
nsStyleUtil::AppendEscapedCSSString(areas->mTemplates[0], aResult);
for (uint32_t i = 1; i < areas->mTemplates.Length(); i++) {
aResult.Append(char16_t(' '));
nsStyleUtil::AppendEscapedCSSString(areas->mTemplates[i], aResult);
}
} else if (eCSSUnit_FontFamilyList == unit) {
nsStyleUtil::AppendEscapedCSSFontFamilyList(*mValue.mFontFamilyList,
aResult);
}
switch (unit) {
case eCSSUnit_Null: break;
case eCSSUnit_Auto: aResult.AppendLiteral("auto"); break;
case eCSSUnit_Inherit: aResult.AppendLiteral("inherit"); break;
case eCSSUnit_Initial: aResult.AppendLiteral("initial"); break;
case eCSSUnit_Unset: aResult.AppendLiteral("unset"); break;
case eCSSUnit_None: aResult.AppendLiteral("none"); break;
case eCSSUnit_Normal: aResult.AppendLiteral("normal"); break;
case eCSSUnit_System_Font: aResult.AppendLiteral("-moz-use-system-font"); break;
case eCSSUnit_All: aResult.AppendLiteral("all"); break;
case eCSSUnit_Dummy:
case eCSSUnit_DummyInherit:
MOZ_ASSERT(false, "should never serialize");
break;
case eCSSUnit_FontFamilyList: break;
case eCSSUnit_String: break;
case eCSSUnit_Ident: break;
case eCSSUnit_URL: break;
case eCSSUnit_Image: break;
case eCSSUnit_Element: break;
case eCSSUnit_Array: break;
case eCSSUnit_Attr:
case eCSSUnit_Cubic_Bezier:
case eCSSUnit_Steps:
case eCSSUnit_Symbols:
case eCSSUnit_Counter:
case eCSSUnit_Counters: aResult.Append(char16_t(')')); break;
case eCSSUnit_Local_Font: break;
case eCSSUnit_Font_Format: break;
case eCSSUnit_Function: break;
case eCSSUnit_Calc: break;
case eCSSUnit_Calc_Plus: break;
case eCSSUnit_Calc_Minus: break;
case eCSSUnit_Calc_Times_L: break;
case eCSSUnit_Calc_Times_R: break;
case eCSSUnit_Calc_Divided: break;
case eCSSUnit_Integer: break;
case eCSSUnit_Enumerated: break;
case eCSSUnit_EnumColor: break;
case eCSSUnit_RGBColor: break;
case eCSSUnit_RGBAColor: break;
case eCSSUnit_HexColor: break;
case eCSSUnit_ShortHexColor: break;
case eCSSUnit_PercentageRGBColor: break;
case eCSSUnit_PercentageRGBAColor: break;
case eCSSUnit_HSLColor: break;
case eCSSUnit_HSLAColor: break;
case eCSSUnit_Percent: aResult.Append(char16_t('%')); break;
case eCSSUnit_Number: break;
case eCSSUnit_Gradient: break;
case eCSSUnit_TokenStream: break;
case eCSSUnit_Pair: break;
case eCSSUnit_Triplet: break;
case eCSSUnit_Rect: break;
case eCSSUnit_List: break;
case eCSSUnit_ListDep: break;
case eCSSUnit_SharedList: break;
case eCSSUnit_PairList: break;
case eCSSUnit_PairListDep: break;
case eCSSUnit_GridTemplateAreas: break;
case eCSSUnit_Inch: aResult.AppendLiteral("in"); break;
case eCSSUnit_Millimeter: aResult.AppendLiteral("mm"); break;
case eCSSUnit_PhysicalMillimeter: aResult.AppendLiteral("mozmm"); break;
case eCSSUnit_Centimeter: aResult.AppendLiteral("cm"); break;
case eCSSUnit_Point: aResult.AppendLiteral("pt"); break;
case eCSSUnit_Pica: aResult.AppendLiteral("pc"); break;
case eCSSUnit_ViewportWidth: aResult.AppendLiteral("vw"); break;
case eCSSUnit_ViewportHeight: aResult.AppendLiteral("vh"); break;
case eCSSUnit_ViewportMin: aResult.AppendLiteral("vmin"); break;
case eCSSUnit_ViewportMax: aResult.AppendLiteral("vmax"); break;
case eCSSUnit_EM: aResult.AppendLiteral("em"); break;
case eCSSUnit_XHeight: aResult.AppendLiteral("ex"); break;
case eCSSUnit_Char: aResult.AppendLiteral("ch"); break;
case eCSSUnit_RootEM: aResult.AppendLiteral("rem"); break;
case eCSSUnit_Pixel: aResult.AppendLiteral("px"); break;
case eCSSUnit_Degree: aResult.AppendLiteral("deg"); break;
case eCSSUnit_Grad: aResult.AppendLiteral("grad"); break;
case eCSSUnit_Radian: aResult.AppendLiteral("rad"); break;
case eCSSUnit_Turn: aResult.AppendLiteral("turn"); break;
case eCSSUnit_Hertz: aResult.AppendLiteral("Hz"); break;
case eCSSUnit_Kilohertz: aResult.AppendLiteral("kHz"); break;
case eCSSUnit_Seconds: aResult.Append(char16_t('s')); break;
case eCSSUnit_Milliseconds: aResult.AppendLiteral("ms"); break;
case eCSSUnit_FlexFraction: aResult.AppendLiteral("fr"); break;
}
}
size_t
nsCSSValue::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
switch (GetUnit()) {
// No value: nothing extra to measure.
case eCSSUnit_Null:
case eCSSUnit_Auto:
case eCSSUnit_Inherit:
case eCSSUnit_Initial:
case eCSSUnit_Unset:
case eCSSUnit_None:
case eCSSUnit_Normal:
case eCSSUnit_System_Font:
case eCSSUnit_All:
case eCSSUnit_Dummy:
case eCSSUnit_DummyInherit:
break;
// String
case eCSSUnit_String:
case eCSSUnit_Ident:
case eCSSUnit_Attr:
case eCSSUnit_Local_Font:
case eCSSUnit_Font_Format:
case eCSSUnit_Element:
n += mValue.mString->SizeOfIncludingThisIfUnshared(aMallocSizeOf);
break;
// Array
case eCSSUnit_Array:
case eCSSUnit_Counter:
case eCSSUnit_Counters:
case eCSSUnit_Cubic_Bezier:
case eCSSUnit_Steps:
case eCSSUnit_Symbols:
case eCSSUnit_Function:
case eCSSUnit_Calc:
case eCSSUnit_Calc_Plus:
case eCSSUnit_Calc_Minus:
case eCSSUnit_Calc_Times_L:
case eCSSUnit_Calc_Times_R:
case eCSSUnit_Calc_Divided:
break;
// URL
case eCSSUnit_URL:
n += mValue.mURL->SizeOfIncludingThis(aMallocSizeOf);
break;
// Image
case eCSSUnit_Image:
// Not yet measured. Measurement may be added later if DMD finds it
// worthwhile.
break;
// Gradient
case eCSSUnit_Gradient:
n += mValue.mGradient->SizeOfIncludingThis(aMallocSizeOf);
break;
// TokenStream
case eCSSUnit_TokenStream:
n += mValue.mTokenStream->SizeOfIncludingThis(aMallocSizeOf);
break;
// Pair
case eCSSUnit_Pair:
n += mValue.mPair->SizeOfIncludingThis(aMallocSizeOf);
break;
// Triplet
case eCSSUnit_Triplet:
n += mValue.mTriplet->SizeOfIncludingThis(aMallocSizeOf);
break;
// Rect
case eCSSUnit_Rect:
n += mValue.mRect->SizeOfIncludingThis(aMallocSizeOf);
break;
// List
case eCSSUnit_List:
n += mValue.mList->SizeOfIncludingThis(aMallocSizeOf);
break;
// ListDep: not measured because it's non-owning.
case eCSSUnit_ListDep:
break;
// SharedList
case eCSSUnit_SharedList:
// Makes more sense not to measure, since it most cases the list
// will be shared.
break;
// PairList
case eCSSUnit_PairList:
n += mValue.mPairList->SizeOfIncludingThis(aMallocSizeOf);
break;
// PairListDep: not measured because it's non-owning.
case eCSSUnit_PairListDep:
break;
// GridTemplateAreas
case eCSSUnit_GridTemplateAreas:
n += mValue.mGridTemplateAreas->SizeOfIncludingThis(aMallocSizeOf);
break;
case eCSSUnit_FontFamilyList:
n += mValue.mFontFamilyList->SizeOfIncludingThis(aMallocSizeOf);
break;
// Int: nothing extra to measure.
case eCSSUnit_Integer:
case eCSSUnit_Enumerated:
case eCSSUnit_EnumColor:
break;
// Integer Color: nothing extra to measure.
case eCSSUnit_RGBColor:
case eCSSUnit_RGBAColor:
case eCSSUnit_HexColor:
case eCSSUnit_ShortHexColor:
break;
// Float Color
case eCSSUnit_PercentageRGBColor:
case eCSSUnit_PercentageRGBAColor:
case eCSSUnit_HSLColor:
case eCSSUnit_HSLAColor:
n += mValue.mFloatColor->SizeOfIncludingThis(aMallocSizeOf);
break;
// Float: nothing extra to measure.
case eCSSUnit_Percent:
case eCSSUnit_Number:
case eCSSUnit_PhysicalMillimeter:
case eCSSUnit_ViewportWidth:
case eCSSUnit_ViewportHeight:
case eCSSUnit_ViewportMin:
case eCSSUnit_ViewportMax:
case eCSSUnit_EM:
case eCSSUnit_XHeight:
case eCSSUnit_Char:
case eCSSUnit_RootEM:
case eCSSUnit_Point:
case eCSSUnit_Inch:
case eCSSUnit_Millimeter:
case eCSSUnit_Centimeter:
case eCSSUnit_Pica:
case eCSSUnit_Pixel:
case eCSSUnit_Degree:
case eCSSUnit_Grad:
case eCSSUnit_Turn:
case eCSSUnit_Radian:
case eCSSUnit_Hertz:
case eCSSUnit_Kilohertz:
case eCSSUnit_Seconds:
case eCSSUnit_Milliseconds:
case eCSSUnit_FlexFraction:
break;
default:
MOZ_ASSERT(false, "bad nsCSSUnit");
break;
}
return n;
}
// --- nsCSSValueList -----------------
nsCSSValueList::~nsCSSValueList()
{
MOZ_COUNT_DTOR(nsCSSValueList);
NS_CSS_DELETE_LIST_MEMBER(nsCSSValueList, this, mNext);
}
nsCSSValueList*
nsCSSValueList::Clone() const
{
nsCSSValueList* result = new nsCSSValueList(*this);
nsCSSValueList* dest = result;
const nsCSSValueList* src = this->mNext;
while (src) {
dest->mNext = new nsCSSValueList(*src);
dest = dest->mNext;
src = src->mNext;
}
MOZ_ASSERT(result, "shouldn't return null; supposed to be infallible");
return result;
}
void
nsCSSValueList::CloneInto(nsCSSValueList* aList) const
{
NS_ASSERTION(!aList->mNext, "Must be an empty list!");
aList->mValue = mValue;
aList->mNext = mNext ? mNext->Clone() : nullptr;
}
static void
AppendValueListToString(const nsCSSValueList* val,
nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization)
{
for (;;) {
val->mValue.AppendToString(aProperty, aResult, aSerialization);
val = val->mNext;
if (!val)
break;
if (nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_VALUE_LIST_USES_COMMAS))
aResult.Append(char16_t(','));
aResult.Append(char16_t(' '));
}
}
static void
AppendGridTemplateToString(const nsCSSValueList* val,
nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization)
{
// This is called for the "list" that's the top-level value of the property.
bool isSubgrid = false;
for (;;) {
bool addSpaceSeparator = true;
nsCSSUnit unit = val->mValue.GetUnit();
if (unit == eCSSUnit_Enumerated &&
val->mValue.GetIntValue() == NS_STYLE_GRID_TEMPLATE_SUBGRID) {
isSubgrid = true;
aResult.AppendLiteral("subgrid");
} else if (unit == eCSSUnit_Null) {
// Empty or omitted <line-names>.
if (isSubgrid) {
aResult.AppendLiteral("()");
} else {
// Serializes to nothing.
addSpaceSeparator = false; // Avoid a double space.
}
} else if (unit == eCSSUnit_List || unit == eCSSUnit_ListDep) {
// Non-empty <line-names>
aResult.Append('(');
AppendValueListToString(val->mValue.GetListValue(), aProperty,
aResult, aSerialization);
aResult.Append(')');
} else {
// <track-size>
val->mValue.AppendToString(aProperty, aResult, aSerialization);
if (!isSubgrid &&
val->mNext &&
val->mNext->mValue.GetUnit() == eCSSUnit_Null &&
!val->mNext->mNext) {
// Break out of the loop early to avoid a trailing space.
break;
}
}
val = val->mNext;
if (!val) {
break;
}
if (addSpaceSeparator) {
aResult.Append(char16_t(' '));
}
}
}
void
nsCSSValueList::AppendToString(nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
if (aProperty == eCSSProperty_grid_template_columns ||
aProperty == eCSSProperty_grid_template_rows) {
AppendGridTemplateToString(this, aProperty, aResult, aSerialization);
} else {
AppendValueListToString(this, aProperty, aResult, aSerialization);
}
}
/* static */ bool
nsCSSValueList::Equal(const nsCSSValueList* aList1,
const nsCSSValueList* aList2)
{
if (aList1 == aList2) {
return true;
}
const nsCSSValueList *p1 = aList1, *p2 = aList2;
for ( ; p1 && p2; p1 = p1->mNext, p2 = p2->mNext) {
if (p1->mValue != p2->mValue)
return false;
}
return !p1 && !p2; // true if same length, false otherwise
}
size_t
nsCSSValueList::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
const nsCSSValueList* v = this;
while (v) {
n += aMallocSizeOf(v);
n += v->mValue.SizeOfExcludingThis(aMallocSizeOf);
v = v->mNext;
}
return n;
}
size_t
nsCSSValueList_heap::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mValue.SizeOfExcludingThis(aMallocSizeOf);
n += mNext ? mNext->SizeOfIncludingThis(aMallocSizeOf) : 0;
return n;
}
// --- nsCSSValueSharedList -----------------
nsCSSValueSharedList::~nsCSSValueSharedList()
{
MOZ_COUNT_DTOR(nsCSSValueSharedList);
if (mHead) {
NS_CSS_DELETE_LIST_MEMBER(nsCSSValueList, mHead, mNext);
delete mHead;
}
}
void
nsCSSValueSharedList::AppendToString(nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
if (mHead) {
mHead->AppendToString(aProperty, aResult, aSerialization);
}
}
bool
nsCSSValueSharedList::operator==(const nsCSSValueSharedList& aOther) const
{
return nsCSSValueList::Equal(mHead, aOther.mHead);
}
size_t
nsCSSValueSharedList::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
n += aMallocSizeOf(this);
n += mHead->SizeOfIncludingThis(aMallocSizeOf);
return n;
}
// --- nsCSSRect -----------------
nsCSSRect::nsCSSRect(void)
{
MOZ_COUNT_CTOR(nsCSSRect);
}
nsCSSRect::nsCSSRect(const nsCSSRect& aCopy)
: mTop(aCopy.mTop),
mRight(aCopy.mRight),
mBottom(aCopy.mBottom),
mLeft(aCopy.mLeft)
{
MOZ_COUNT_CTOR(nsCSSRect);
}
nsCSSRect::~nsCSSRect()
{
MOZ_COUNT_DTOR(nsCSSRect);
}
void
nsCSSRect::AppendToString(nsCSSProperty aProperty, nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
MOZ_ASSERT(mTop.GetUnit() != eCSSUnit_Null &&
mTop.GetUnit() != eCSSUnit_Inherit &&
mTop.GetUnit() != eCSSUnit_Initial &&
mTop.GetUnit() != eCSSUnit_Unset,
"parser should have used a bare value");
if (eCSSProperty_border_image_slice == aProperty ||
eCSSProperty_border_image_width == aProperty ||
eCSSProperty_border_image_outset == aProperty) {
NS_NAMED_LITERAL_STRING(space, " ");
mTop.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(space);
mRight.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(space);
mBottom.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(space);
mLeft.AppendToString(aProperty, aResult, aSerialization);
} else {
NS_NAMED_LITERAL_STRING(comma, ", ");
aResult.AppendLiteral("rect(");
mTop.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(comma);
mRight.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(comma);
mBottom.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(comma);
mLeft.AppendToString(aProperty, aResult, aSerialization);
aResult.Append(char16_t(')'));
}
}
void nsCSSRect::SetAllSidesTo(const nsCSSValue& aValue)
{
mTop = aValue;
mRight = aValue;
mBottom = aValue;
mLeft = aValue;
}
size_t
nsCSSRect_heap::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mTop .SizeOfExcludingThis(aMallocSizeOf);
n += mRight .SizeOfExcludingThis(aMallocSizeOf);
n += mBottom.SizeOfExcludingThis(aMallocSizeOf);
n += mLeft .SizeOfExcludingThis(aMallocSizeOf);
return n;
}
static_assert(NS_SIDE_TOP == 0 && NS_SIDE_RIGHT == 1 &&
NS_SIDE_BOTTOM == 2 && NS_SIDE_LEFT == 3,
"box side constants not top/right/bottom/left == 0/1/2/3");
/* static */ const nsCSSRect::side_type nsCSSRect::sides[4] = {
&nsCSSRect::mTop,
&nsCSSRect::mRight,
&nsCSSRect::mBottom,
&nsCSSRect::mLeft,
};
// --- nsCSSValuePair -----------------
void
nsCSSValuePair::AppendToString(nsCSSProperty aProperty,
nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
mXValue.AppendToString(aProperty, aResult, aSerialization);
if (mYValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(char16_t(' '));
mYValue.AppendToString(aProperty, aResult, aSerialization);
}
}
size_t
nsCSSValuePair::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
n += mXValue.SizeOfExcludingThis(aMallocSizeOf);
n += mYValue.SizeOfExcludingThis(aMallocSizeOf);
return n;
}
size_t
nsCSSValuePair_heap::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mXValue.SizeOfExcludingThis(aMallocSizeOf);
n += mYValue.SizeOfExcludingThis(aMallocSizeOf);
return n;
}
// --- nsCSSValueTriplet -----------------
void
nsCSSValueTriplet::AppendToString(nsCSSProperty aProperty,
nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
mXValue.AppendToString(aProperty, aResult, aSerialization);
if (mYValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(char16_t(' '));
mYValue.AppendToString(aProperty, aResult, aSerialization);
if (mZValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(char16_t(' '));
mZValue.AppendToString(aProperty, aResult, aSerialization);
}
}
}
size_t
nsCSSValueTriplet_heap::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mXValue.SizeOfExcludingThis(aMallocSizeOf);
n += mYValue.SizeOfExcludingThis(aMallocSizeOf);
n += mZValue.SizeOfExcludingThis(aMallocSizeOf);
return n;
}
// --- nsCSSValuePairList -----------------
nsCSSValuePairList::~nsCSSValuePairList()
{
MOZ_COUNT_DTOR(nsCSSValuePairList);
NS_CSS_DELETE_LIST_MEMBER(nsCSSValuePairList, this, mNext);
}
nsCSSValuePairList*
nsCSSValuePairList::Clone() const
{
nsCSSValuePairList* result = new nsCSSValuePairList(*this);
nsCSSValuePairList* dest = result;
const nsCSSValuePairList* src = this->mNext;
while (src) {
dest->mNext = new nsCSSValuePairList(*src);
dest = dest->mNext;
src = src->mNext;
}
MOZ_ASSERT(result, "shouldn't return null; supposed to be infallible");
return result;
}
void
nsCSSValuePairList::AppendToString(nsCSSProperty aProperty,
nsAString& aResult,
nsCSSValue::Serialization aSerialization) const
{
const nsCSSValuePairList* item = this;
for (;;) {
MOZ_ASSERT(item->mXValue.GetUnit() != eCSSUnit_Null,
"unexpected null unit");
item->mXValue.AppendToString(aProperty, aResult, aSerialization);
if (item->mXValue.GetUnit() != eCSSUnit_Inherit &&
item->mXValue.GetUnit() != eCSSUnit_Initial &&
item->mXValue.GetUnit() != eCSSUnit_Unset &&
item->mYValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(char16_t(' '));
item->mYValue.AppendToString(aProperty, aResult, aSerialization);
}
item = item->mNext;
if (!item)
break;
if (nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_VALUE_LIST_USES_COMMAS) ||
aProperty == eCSSProperty_clip_path)
aResult.Append(char16_t(','));
aResult.Append(char16_t(' '));
}
}
/* static */ bool
nsCSSValuePairList::Equal(const nsCSSValuePairList* aList1,
const nsCSSValuePairList* aList2)
{
if (aList1 == aList2) {
return true;
}
const nsCSSValuePairList *p1 = aList1, *p2 = aList2;
for ( ; p1 && p2; p1 = p1->mNext, p2 = p2->mNext) {
if (p1->mXValue != p2->mXValue ||
p1->mYValue != p2->mYValue)
return false;
}
return !p1 && !p2; // true if same length, false otherwise
}
size_t
nsCSSValuePairList::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
const nsCSSValuePairList* v = this;
while (v) {
n += aMallocSizeOf(v);
n += v->mXValue.SizeOfExcludingThis(aMallocSizeOf);
n += v->mYValue.SizeOfExcludingThis(aMallocSizeOf);
v = v->mNext;
}
return n;
}
size_t
nsCSSValuePairList_heap::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mXValue.SizeOfExcludingThis(aMallocSizeOf);
n += mYValue.SizeOfExcludingThis(aMallocSizeOf);
n += mNext ? mNext->SizeOfIncludingThis(aMallocSizeOf) : 0;
return n;
}
size_t
nsCSSValue::Array::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
for (size_t i = 0; i < mCount; i++) {
n += mArray[i].SizeOfExcludingThis(aMallocSizeOf);
}
return n;
}
css::URLValue::URLValue(nsIURI* aURI, nsStringBuffer* aString,
nsIURI* aReferrer, nsIPrincipal* aOriginPrincipal)
: mURI(aURI),
mString(aString),
mReferrer(aReferrer),
mOriginPrincipal(aOriginPrincipal),
mURIResolved(true)
{
MOZ_ASSERT(aOriginPrincipal, "Must have an origin principal");
mString->AddRef();
}
css::URLValue::URLValue(nsStringBuffer* aString, nsIURI* aBaseURI,
nsIURI* aReferrer, nsIPrincipal* aOriginPrincipal)
: mURI(aBaseURI),
mString(aString),
mReferrer(aReferrer),
mOriginPrincipal(aOriginPrincipal),
mURIResolved(false)
{
MOZ_ASSERT(aOriginPrincipal, "Must have an origin principal");
mString->AddRef();
}
css::URLValue::~URLValue()
{
mString->Release();
}
bool
css::URLValue::operator==(const URLValue& aOther) const
{
bool eq;
return NS_strcmp(nsCSSValue::GetBufferValue(mString),
nsCSSValue::GetBufferValue(aOther.mString)) == 0 &&
(GetURI() == aOther.GetURI() || // handles null == null
(mURI && aOther.mURI &&
NS_SUCCEEDED(mURI->Equals(aOther.mURI, &eq)) &&
eq)) &&
(mOriginPrincipal == aOther.mOriginPrincipal ||
(NS_SUCCEEDED(mOriginPrincipal->Equals(aOther.mOriginPrincipal,
&eq)) && eq));
}
bool
css::URLValue::URIEquals(const URLValue& aOther) const
{
MOZ_ASSERT(mURIResolved && aOther.mURIResolved,
"How do you know the URIs aren't null?");
bool eq;
// Worth comparing GetURI() to aOther.GetURI() and mOriginPrincipal to
// aOther.mOriginPrincipal, because in the (probably common) case when this
// value was one of the ones that in fact did not change this will be our
// fast path to equality
return (mURI == aOther.mURI ||
(NS_SUCCEEDED(mURI->Equals(aOther.mURI, &eq)) && eq)) &&
(mOriginPrincipal == aOther.mOriginPrincipal ||
(NS_SUCCEEDED(mOriginPrincipal->Equals(aOther.mOriginPrincipal,
&eq)) && eq));
}
nsIURI*
css::URLValue::GetURI() const
{
if (!mURIResolved) {
mURIResolved = true;
// Be careful to not null out mURI before we've passed it as the base URI
nsCOMPtr<nsIURI> newURI;
NS_NewURI(getter_AddRefs(newURI),
NS_ConvertUTF16toUTF8(nsCSSValue::GetBufferValue(mString)),
nullptr, mURI);
newURI.swap(mURI);
}
return mURI;
}
size_t
css::URLValue::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
// This string is unshared.
n += mString->SizeOfIncludingThisMustBeUnshared(aMallocSizeOf);
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - mURI
// - mReferrer
// - mOriginPrincipal
return n;
}
css::ImageValue::ImageValue(nsIURI* aURI, nsStringBuffer* aString,
nsIURI* aReferrer, nsIPrincipal* aOriginPrincipal,
nsIDocument* aDocument)
: URLValue(aURI, aString, aReferrer, aOriginPrincipal)
{
// NB: If aDocument is not the original document, we may not be able to load
// images from aDocument. Instead we do the image load from the original doc
// and clone it to aDocument.
nsIDocument* loadingDoc = aDocument->GetOriginalDocument();
if (!loadingDoc) {
loadingDoc = aDocument;
}
loadingDoc->StyleImageLoader()->LoadImage(aURI, aOriginPrincipal, aReferrer,
this);
if (loadingDoc != aDocument) {
aDocument->StyleImageLoader()->MaybeRegisterCSSImage(this);
}
}
static PLDHashOperator
ClearRequestHashtable(nsISupports* aKey, nsRefPtr<imgRequestProxy>& aValue,
void* aClosure)
{
mozilla::css::ImageValue* image =
static_cast<mozilla::css::ImageValue*>(aClosure);
nsIDocument* doc = static_cast<nsIDocument*>(aKey);
#ifdef DEBUG
{
nsCOMPtr<nsIDocument> slowDoc = do_QueryInterface(aKey);
MOZ_ASSERT(slowDoc == doc);
}
#endif
if (doc) {
doc->StyleImageLoader()->DeregisterCSSImage(image);
}
if (aValue) {
aValue->CancelAndForgetObserver(NS_BINDING_ABORTED);
}
return PL_DHASH_REMOVE;
}
css::ImageValue::~ImageValue()
{
mRequests.Enumerate(&ClearRequestHashtable, this);
}
nsCSSValueGradientStop::nsCSSValueGradientStop()
: mLocation(eCSSUnit_None),
mColor(eCSSUnit_Null),
mIsInterpolationHint(false)
{
MOZ_COUNT_CTOR(nsCSSValueGradientStop);
}
nsCSSValueGradientStop::nsCSSValueGradientStop(const nsCSSValueGradientStop& aOther)
: mLocation(aOther.mLocation),
mColor(aOther.mColor),
mIsInterpolationHint(aOther.mIsInterpolationHint)
{
MOZ_COUNT_CTOR(nsCSSValueGradientStop);
}
nsCSSValueGradientStop::~nsCSSValueGradientStop()
{
MOZ_COUNT_DTOR(nsCSSValueGradientStop);
}
size_t
nsCSSValueGradientStop::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = 0;
n += mLocation.SizeOfExcludingThis(aMallocSizeOf);
n += mColor .SizeOfExcludingThis(aMallocSizeOf);
return n;
}
nsCSSValueGradient::nsCSSValueGradient(bool aIsRadial,
bool aIsRepeating)
: mIsRadial(aIsRadial),
mIsRepeating(aIsRepeating),
mIsLegacySyntax(false),
mIsExplicitSize(false),
mBgPos(eCSSUnit_None),
mAngle(eCSSUnit_None)
{
mRadialValues[0].SetNoneValue();
mRadialValues[1].SetNoneValue();
}
size_t
nsCSSValueGradient::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mBgPos.SizeOfExcludingThis(aMallocSizeOf);
n += mAngle.SizeOfExcludingThis(aMallocSizeOf);
n += mRadialValues[0].SizeOfExcludingThis(aMallocSizeOf);
n += mRadialValues[1].SizeOfExcludingThis(aMallocSizeOf);
n += mStops.SizeOfExcludingThis(aMallocSizeOf);
for (uint32_t i = 0; i < mStops.Length(); i++) {
n += mStops[i].SizeOfExcludingThis(aMallocSizeOf);
}
return n;
}
// --- nsCSSValueTokenStream ------------
nsCSSValueTokenStream::nsCSSValueTokenStream()
: mPropertyID(eCSSProperty_UNKNOWN)
, mShorthandPropertyID(eCSSProperty_UNKNOWN)
{
MOZ_COUNT_CTOR(nsCSSValueTokenStream);
}
nsCSSValueTokenStream::~nsCSSValueTokenStream()
{
MOZ_COUNT_DTOR(nsCSSValueTokenStream);
}
size_t
nsCSSValueTokenStream::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
n += mTokenStream.SizeOfExcludingThisIfUnshared(aMallocSizeOf);
return n;
}
// --- nsCSSValueFloatColor -------------
bool
nsCSSValueFloatColor::operator==(nsCSSValueFloatColor& aOther) const
{
return mComponent1 == aOther.mComponent1 &&
mComponent2 == aOther.mComponent2 &&
mComponent3 == aOther.mComponent3 &&
mAlpha == aOther.mAlpha;
}
nscolor
nsCSSValueFloatColor::GetColorValue(nsCSSUnit aUnit) const
{
MOZ_ASSERT(nsCSSValue::IsFloatColorUnit(aUnit), "unexpected unit");
if (aUnit == eCSSUnit_PercentageRGBColor ||
aUnit == eCSSUnit_PercentageRGBAColor) {
return NS_RGBA(NSToIntRound(mComponent1 * 255.0f),
NSToIntRound(mComponent2 * 255.0f),
NSToIntRound(mComponent3 * 255.0f),
NSToIntRound(mAlpha * 255.0f));
}
// HSL color
MOZ_ASSERT(aUnit == eCSSUnit_HSLColor ||
aUnit == eCSSUnit_HSLAColor);
nscolor hsl = NS_HSL2RGB(mComponent1, mComponent2, mComponent3);
return NS_RGBA(NS_GET_R(hsl),
NS_GET_G(hsl),
NS_GET_B(hsl),
NSToIntRound(mAlpha * 255.0f));
}
bool
nsCSSValueFloatColor::IsNonTransparentColor() const
{
return mAlpha > 0.0f;
}
void
nsCSSValueFloatColor::AppendToString(nsCSSUnit aUnit, nsAString& aResult) const
{
MOZ_ASSERT(nsCSSValue::IsFloatColorUnit(aUnit), "unexpected unit");
bool hasAlpha = aUnit == eCSSUnit_PercentageRGBAColor ||
aUnit == eCSSUnit_HSLAColor;
bool isHSL = aUnit == eCSSUnit_HSLColor ||
aUnit == eCSSUnit_HSLAColor;
if (isHSL) {
aResult.AppendLiteral("hsl");
} else {
aResult.AppendLiteral("rgb");
}
if (hasAlpha) {
aResult.AppendLiteral("a(");
} else {
aResult.Append('(');
}
if (isHSL) {
aResult.AppendFloat(mComponent1 * 360.0f);
aResult.AppendLiteral(", ");
} else {
aResult.AppendFloat(mComponent1 * 100.0f);
aResult.AppendLiteral("%, ");
}
aResult.AppendFloat(mComponent2 * 100.0f);
aResult.AppendLiteral("%, ");
aResult.AppendFloat(mComponent3 * 100.0f);
if (hasAlpha) {
aResult.AppendLiteral("%, ");
aResult.AppendFloat(mAlpha);
aResult.Append(')');
} else {
aResult.AppendLiteral("%)");
}
}
size_t
nsCSSValueFloatColor::SizeOfIncludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
return n;
}
// --- nsCSSCornerSizes -----------------
nsCSSCornerSizes::nsCSSCornerSizes(void)
{
MOZ_COUNT_CTOR(nsCSSCornerSizes);
}
nsCSSCornerSizes::nsCSSCornerSizes(const nsCSSCornerSizes& aCopy)
: mTopLeft(aCopy.mTopLeft),
mTopRight(aCopy.mTopRight),
mBottomRight(aCopy.mBottomRight),
mBottomLeft(aCopy.mBottomLeft)
{
MOZ_COUNT_CTOR(nsCSSCornerSizes);
}
nsCSSCornerSizes::~nsCSSCornerSizes()
{
MOZ_COUNT_DTOR(nsCSSCornerSizes);
}
void
nsCSSCornerSizes::Reset()
{
NS_FOR_CSS_FULL_CORNERS(corner) {
this->GetCorner(corner).Reset();
}
}
static_assert(NS_CORNER_TOP_LEFT == 0 && NS_CORNER_TOP_RIGHT == 1 &&
NS_CORNER_BOTTOM_RIGHT == 2 && NS_CORNER_BOTTOM_LEFT == 3,
"box corner constants not tl/tr/br/bl == 0/1/2/3");
/* static */ const nsCSSCornerSizes::corner_type
nsCSSCornerSizes::corners[4] = {
&nsCSSCornerSizes::mTopLeft,
&nsCSSCornerSizes::mTopRight,
&nsCSSCornerSizes::mBottomRight,
&nsCSSCornerSizes::mBottomLeft,
};
size_t
mozilla::css::GridTemplateAreasValue::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t n = mNamedAreas.SizeOfExcludingThis(aMallocSizeOf);
n += mTemplates.SizeOfExcludingThis(aMallocSizeOf);
return n;
}
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