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gecko/layout/style/nsCSSValue.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* representation of simple property values within CSS declarations */
#include "nsCSSValue.h"
#include "imgIRequest.h"
#include "nsIPrincipal.h"
#include "nsCSSProps.h"
#include "nsContentUtils.h"
#include "nsStyleUtil.h"
#include "CSSCalc.h"
namespace css = mozilla::css;
nsCSSValue::nsCSSValue(PRInt32 aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ABORT_IF_FALSE(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)
{
NS_ABORT_IF_FALSE(eCSSUnit_Percent <= aUnit, "not a float value");
if (eCSSUnit_Percent <= aUnit) {
mValue.mFloat = aValue;
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(const nsString& aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ABORT_IF_FALSE(UnitHasStringValue(), "not a string value");
if (UnitHasStringValue()) {
mValue.mString = BufferFromString(aValue).get();
if (NS_UNLIKELY(!mValue.mString)) {
// XXXbz not much we can do here; just make sure that our promise of a
// non-null mValue.mString holds for string units.
mUnit = eCSSUnit_Null;
}
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ABORT_IF_FALSE(UnitHasArrayValue(), "bad unit");
mValue.mArray = aValue;
mValue.mArray->AddRef();
}
nsCSSValue::nsCSSValue(nsCSSValue::URL* aValue)
: mUnit(eCSSUnit_URL)
{
mValue.mURL = aValue;
mValue.mURL->AddRef();
}
nsCSSValue::nsCSSValue(nsCSSValue::Image* 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(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;
}
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 (eCSSUnit_Color == mUnit) {
mValue.mColor = aCopy.mValue.mColor;
}
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_Pair == mUnit) {
mValue.mPair = aCopy.mValue.mPair;
mValue.mPair->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_PairList == mUnit) {
mValue.mPairList = aCopy.mValue.mPairList;
mValue.mPairList->AddRef();
}
else if (eCSSUnit_PairListDep == mUnit) {
mValue.mPairListDependent = aCopy.mValue.mPairListDependent;
}
else {
NS_ABORT_IF_FALSE(false, "unknown unit");
}
}
nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy)
{
if (this != &aCopy) {
Reset();
new (this) nsCSSValue(aCopy);
}
return *this;
}
PRBool nsCSSValue::operator==(const nsCSSValue& aOther) const
{
NS_ABORT_IF_FALSE(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 PR_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 (eCSSUnit_Color == mUnit) {
return mValue.mColor == aOther.mValue.mColor;
}
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_Pair == mUnit) {
return *mValue.mPair == *aOther.mValue.mPair;
}
else if (eCSSUnit_Rect == mUnit) {
return *mValue.mRect == *aOther.mValue.mRect;
}
else if (eCSSUnit_List == mUnit) {
return *mValue.mList == *aOther.mValue.mList;
}
else if (eCSSUnit_PairList == mUnit) {
return *mValue.mPairList == *aOther.mValue.mPairList;
}
else {
return mValue.mFloat == aOther.mValue.mFloat;
}
}
return PR_FALSE;
}
double nsCSSValue::GetAngleValueInRadians() const
{
double angle = GetFloatValue();
switch (GetUnit()) {
case eCSSUnit_Radian: return angle;
case eCSSUnit_Degree: return angle * M_PI / 180.0;
case eCSSUnit_Grad: return angle * M_PI / 200.0;
default:
NS_ABORT_IF_FALSE(false, "unrecognized angular unit");
return 0.0;
}
}
imgIRequest* nsCSSValue::GetImageValue() const
{
NS_ABORT_IF_FALSE(mUnit == eCSSUnit_Image, "not an Image value");
return mValue.mImage->mRequest;
}
nscoord nsCSSValue::GetFixedLength(nsPresContext* aPresContext) const
{
NS_ABORT_IF_FALSE(mUnit == eCSSUnit_PhysicalMillimeter,
"not a fixed length unit");
float inches = mValue.mFloat / MM_PER_INCH_FLOAT;
return inches * aPresContext->DeviceContext()->AppUnitsPerPhysicalInch();
}
nscoord nsCSSValue::GetPixelLength() const
{
NS_ABORT_IF_FALSE(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 (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_Pair == mUnit) {
mValue.mPair->Release();
} else if (eCSSUnit_Rect == mUnit) {
mValue.mRect->Release();
} else if (eCSSUnit_List == mUnit) {
mValue.mList->Release();
} else if (eCSSUnit_PairList == mUnit) {
mValue.mPairList->Release();
}
mUnit = eCSSUnit_Null;
}
void nsCSSValue::SetIntValue(PRInt32 aValue, nsCSSUnit aUnit)
{
NS_ABORT_IF_FALSE(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;
}
void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
{
NS_ABORT_IF_FALSE(eCSSUnit_Number <= aUnit, "not a float value");
Reset();
if (eCSSUnit_Number <= aUnit) {
mUnit = aUnit;
mValue.mFloat = aValue;
}
}
void nsCSSValue::SetStringValue(const nsString& aValue,
nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
NS_ABORT_IF_FALSE(UnitHasStringValue(), "not a string unit");
if (UnitHasStringValue()) {
mValue.mString = BufferFromString(aValue).get();
if (NS_UNLIKELY(!mValue.mString)) {
// XXXbz not much we can do here; just make sure that our promise of a
// non-null mValue.mString holds for string units.
mUnit = eCSSUnit_Null;
}
} else
mUnit = eCSSUnit_Null;
}
void nsCSSValue::SetColorValue(nscolor aValue)
{
Reset();
mUnit = eCSSUnit_Color;
mValue.mColor = aValue;
}
void nsCSSValue::SetArrayValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
{
Reset();
mUnit = aUnit;
NS_ABORT_IF_FALSE(UnitHasArrayValue(), "bad unit");
mValue.mArray = aValue;
mValue.mArray->AddRef();
}
void nsCSSValue::SetURLValue(nsCSSValue::URL* aValue)
{
Reset();
mUnit = eCSSUnit_URL;
mValue.mURL = aValue;
mValue.mURL->AddRef();
}
void nsCSSValue::SetImageValue(nsCSSValue::Image* 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::SetPairValue(const nsCSSValuePair* aValue)
{
// pairs should not be used for null/inherit/initial values
NS_ABORT_IF_FALSE(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,
"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)
{
NS_ABORT_IF_FALSE(xValue.GetUnit() != eCSSUnit_Null &&
yValue.GetUnit() != eCSSUnit_Null &&
xValue.GetUnit() != eCSSUnit_Inherit &&
yValue.GetUnit() != eCSSUnit_Inherit &&
xValue.GetUnit() != eCSSUnit_Initial &&
yValue.GetUnit() != eCSSUnit_Initial,
"inappropriate pair value");
Reset();
mUnit = eCSSUnit_Pair;
mValue.mPair = new nsCSSValuePair_heap(xValue, yValue);
mValue.mPair->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::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::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
{
NS_ABORT_IF_FALSE(eCSSUnit_URL == mUnit, "Not a URL value!");
nsCSSValue::Image* image =
new nsCSSValue::Image(mValue.mURL->mURI,
mValue.mURL->mString,
mValue.mURL->mReferrer,
mValue.mURL->mOriginPrincipal,
aDocument);
if (image) {
nsCSSValue* writable = const_cast<nsCSSValue*>(this);
writable->SetImageValue(image);
}
}
PRBool 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
(mUnit == eCSSUnit_Color && NS_GET_A(GetColorValue()) > 0) ||
(mUnit == eCSSUnit_Ident &&
!nsGkAtoms::transparent->Equals(GetStringValue(buf))) ||
(mUnit == eCSSUnit_EnumColor);
}
nsCSSValue::Array*
nsCSSValue::InitFunction(nsCSSKeyword aFunctionId, PRUint32 aNumArgs)
{
nsRefPtr<nsCSSValue::Array> func = Array::Create(aNumArgs + 1);
if (!func) {
return nsnull;
}
func->Item(0).SetIntValue(aFunctionId, eCSSUnit_Enumerated);
SetArrayValue(func, eCSSUnit_Function);
return func;
}
PRBool
nsCSSValue::EqualsFunction(nsCSSKeyword aFunctionId) const
{
if (mUnit != eCSSUnit_Function) {
return PR_FALSE;
}
nsCSSValue::Array* func = mValue.mArray;
NS_ABORT_IF_FALSE(func && func->Count() >= 1 &&
func->Item(0).GetUnit() == eCSSUnit_Enumerated,
"illegally structured function value");
nsCSSKeyword thisFunctionId =
static_cast<nsCSSKeyword>(func->Item(0).GetIntValue());
return thisFunctionId == aFunctionId;
}
// static
already_AddRefed<nsStringBuffer>
nsCSSValue::BufferFromString(const nsString& aValue)
{
nsStringBuffer* buffer = nsStringBuffer::FromString(aValue);
if (buffer) {
buffer->AddRef();
return buffer;
}
PRUnichar length = aValue.Length();
// NOTE: Alloc prouduces a new, already-addref'd (refcnt = 1) buffer.
buffer = nsStringBuffer::Alloc((length + 1) * sizeof(PRUnichar));
if (NS_LIKELY(buffer != 0)) {
PRUnichar* data = static_cast<PRUnichar*>(buffer->Data());
nsCharTraits<PRUnichar>::copy(data, aValue.get(), length);
// Null-terminate.
data[length] = 0;
}
return buffer;
}
namespace {
struct CSSValueSerializeCalcOps {
CSSValueSerializeCalcOps(nsCSSProperty aProperty, nsAString& aResult)
: mProperty(aProperty),
mResult(aResult)
{
}
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)
{
NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Percent ||
aValue.IsLengthUnit(), "unexpected unit");
aValue.AppendToString(mProperty, mResult);
}
void AppendNumber(const input_type& aValue)
{
NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Number, "unexpected unit");
aValue.AppendToString(mProperty, mResult);
}
private:
nsCSSProperty mProperty;
nsAString &mResult;
};
} // anonymous namespace
void
nsCSSValue::AppendToString(nsCSSProperty aProperty, nsAString& aResult) const
{
// eCSSProperty_UNKNOWN gets used for some recursive calls below.
NS_ABORT_IF_FALSE((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 if (unit == eCSSUnit_Families) {
// XXX We really need to do *some* escaping.
aResult.Append(buffer);
} else {
nsStyleUtil::AppendEscapedCSSIdent(buffer, aResult);
}
}
else if (eCSSUnit_Array <= unit && unit <= eCSSUnit_Cubic_Bezier) {
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;
default: break;
}
nsCSSValue::Array *array = GetArrayValue();
PRBool mark = PR_FALSE;
for (size_t i = 0, i_end = array->Count(); i < i_end; ++i) {
if (aProperty == eCSSProperty_border_image && i >= 5) {
if (array->Item(i).GetUnit() == eCSSUnit_Null) {
continue;
}
if (i == 5) {
aResult.AppendLiteral(" /");
}
}
if (mark && array->Item(i).GetUnit() != eCSSUnit_Null) {
if (unit == eCSSUnit_Array &&
eCSSProperty_transition_timing_function != aProperty)
aResult.AppendLiteral(" ");
else
aResult.AppendLiteral(", ");
}
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);
mark = PR_TRUE;
}
}
if (eCSSUnit_Array == unit &&
aProperty == eCSSProperty_transition_timing_function) {
aResult.AppendLiteral(")");
}
}
/* 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();
NS_ABORT_IF_FALSE(array->Count() >= 1,
"Functions must have at least one element for the name.");
/* Append the function name. */
const nsCSSValue& functionName = array->Item(0);
if (functionName.GetUnit() == eCSSUnit_Enumerated) {
// We assume that the first argument is always of nsCSSKeyword type.
const nsCSSKeyword functionId =
static_cast<nsCSSKeyword>(functionName.GetIntValue());
nsStyleUtil::AppendEscapedCSSIdent(
NS_ConvertASCIItoUTF16(nsCSSKeywords::GetStringValue(functionId)),
aResult);
} else {
functionName.AppendToString(aProperty, aResult);
}
aResult.AppendLiteral("(");
/* 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);
/* If we're not at the final element, append a comma. */
if (index + 1 != array->Count())
aResult.AppendLiteral(", ");
}
/* Finally, append the closing parenthesis. */
aResult.AppendLiteral(")");
}
else if (IsCalcUnit()) {
NS_ABORT_IF_FALSE(GetUnit() == eCSSUnit_Calc, "unexpected unit");
CSSValueSerializeCalcOps ops(aProperty, aResult);
css::SerializeCalc(*this, ops);
}
else if (eCSSUnit_Integer == unit) {
aResult.AppendInt(GetIntValue(), 10);
}
else if (eCSSUnit_Enumerated == unit) {
if (eCSSProperty_text_decoration == aProperty) {
PRInt32 intValue = GetIntValue();
if (NS_STYLE_TEXT_DECORATION_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_OVERRIDE_ALL;
nsStyleUtil::AppendBitmaskCSSValue(
aProperty, intValue,
NS_STYLE_TEXT_DECORATION_UNDERLINE,
NS_STYLE_TEXT_DECORATION_PREF_ANCHORS,
aResult);
}
}
else if (eCSSProperty_azimuth == aProperty) {
PRInt32 intValue = GetIntValue();
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, (intValue & ~NS_STYLE_AZIMUTH_BEHIND)), aResult);
if ((NS_STYLE_AZIMUTH_BEHIND & intValue) != 0) {
aResult.Append(PRUnichar(' '));
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, NS_STYLE_AZIMUTH_BEHIND), aResult);
}
}
else if (eCSSProperty_marks == aProperty) {
PRInt32 intValue = GetIntValue();
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);
}
}
else {
const nsAFlatCString& name = nsCSSProps::LookupPropertyValue(aProperty, GetIntValue());
AppendASCIItoUTF16(name, aResult);
}
}
else if (eCSSUnit_EnumColor == unit) {
// we can lookup the property in the ColorTable and then
// get a string mapping the name
nsCAutoString str;
if (nsCSSProps::GetColorName(GetIntValue(), str)){
AppendASCIItoUTF16(str, aResult);
} else {
NS_ABORT_IF_FALSE(false, "bad color value");
}
}
else if (eCSSUnit_Color == unit) {
nscolor color = GetColorValue();
if (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 {
PRUint8 a = NS_GET_A(color);
if (a < 255) {
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 (a < 255) {
aResult.Append(comma);
aResult.AppendFloat(nsStyleUtil::ColorComponentToFloat(a));
}
aResult.Append(PRUnichar(')'));
}
}
else if (eCSSUnit_URL == unit || eCSSUnit_Image == unit) {
aResult.Append(NS_LITERAL_STRING("url("));
nsStyleUtil::AppendEscapedCSSString(
nsDependentString(GetOriginalURLValue()), aResult);
aResult.Append(NS_LITERAL_STRING(")"));
}
else if (eCSSUnit_Element == unit) {
aResult.Append(NS_LITERAL_STRING("-moz-element(#"));
nsAutoString tmpStr;
GetStringValue(tmpStr);
nsStyleUtil::AppendEscapedCSSIdent(
nsDependentString(tmpStr), aResult);
aResult.Append(NS_LITERAL_STRING(")"));
}
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->mIsRepeating) {
if (gradient->mIsRadial)
aResult.AppendLiteral("-moz-repeating-radial-gradient(");
else
aResult.AppendLiteral("-moz-repeating-linear-gradient(");
} else {
if (gradient->mIsRadial)
aResult.AppendLiteral("-moz-radial-gradient(");
else
aResult.AppendLiteral("-moz-linear-gradient(");
}
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None ||
gradient->mBgPos.mYValue.GetUnit() != eCSSUnit_None ||
gradient->mAngle.GetUnit() != eCSSUnit_None) {
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mXValue.AppendToString(eCSSProperty_background_position,
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mYValue.AppendToString(eCSSProperty_background_position,
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mAngle.GetUnit() != eCSSUnit_None) {
gradient->mAngle.AppendToString(aProperty, aResult);
}
aResult.AppendLiteral(", ");
}
if (gradient->mIsRadial &&
(gradient->mRadialShape.GetUnit() != eCSSUnit_None ||
gradient->mRadialSize.GetUnit() != eCSSUnit_None)) {
if (gradient->mRadialShape.GetUnit() != eCSSUnit_None) {
NS_ABORT_IF_FALSE(gradient->mRadialShape.GetUnit() ==
eCSSUnit_Enumerated,
"bad unit for radial gradient shape");
PRInt32 intValue = gradient->mRadialShape.GetIntValue();
NS_ABORT_IF_FALSE(intValue != NS_STYLE_GRADIENT_SHAPE_LINEAR,
"radial gradient with linear shape?!");
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientShapeKTable),
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mRadialSize.GetUnit() != eCSSUnit_None) {
NS_ABORT_IF_FALSE(gradient->mRadialSize.GetUnit() ==
eCSSUnit_Enumerated,
"bad unit for radial gradient size");
PRInt32 intValue = gradient->mRadialSize.GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientSizeKTable),
aResult);
}
aResult.AppendLiteral(", ");
}
for (PRUint32 i = 0 ;;) {
gradient->mStops[i].mColor.AppendToString(aProperty, aResult);
if (gradient->mStops[i].mLocation.GetUnit() != eCSSUnit_None) {
aResult.AppendLiteral(" ");
gradient->mStops[i].mLocation.AppendToString(aProperty, aResult);
}
if (++i == gradient->mStops.Length()) {
break;
}
aResult.AppendLiteral(", ");
}
aResult.AppendLiteral(")");
} else if (eCSSUnit_Pair == unit) {
GetPairValue().AppendToString(aProperty, aResult);
} else if (eCSSUnit_Rect == unit) {
GetRectValue().AppendToString(aProperty, aResult);
} else if (eCSSUnit_List == unit || eCSSUnit_ListDep == unit) {
GetListValue()->AppendToString(aProperty, aResult);
} else if (eCSSUnit_PairList == unit || eCSSUnit_PairListDep == unit) {
GetPairListValue()->AppendToString(aProperty, 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("-moz-initial"); 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:
NS_ABORT_IF_FALSE(false, "should never serialize");
break;
case eCSSUnit_String: break;
case eCSSUnit_Ident: break;
case eCSSUnit_Families: 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_Counter:
case eCSSUnit_Counters: aResult.Append(PRUnichar(')')); 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_Color: break;
case eCSSUnit_Percent: aResult.Append(PRUnichar('%')); break;
case eCSSUnit_Number: break;
case eCSSUnit_Gradient: break;
case eCSSUnit_Pair: break;
case eCSSUnit_Rect: break;
case eCSSUnit_List: break;
case eCSSUnit_ListDep: break;
case eCSSUnit_PairList: break;
case eCSSUnit_PairListDep: 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_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_Hertz: aResult.AppendLiteral("Hz"); break;
case eCSSUnit_Kilohertz: aResult.AppendLiteral("kHz"); break;
case eCSSUnit_Seconds: aResult.Append(PRUnichar('s')); break;
case eCSSUnit_Milliseconds: aResult.AppendLiteral("ms"); break;
}
}
// --- 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;
}
return result;
}
void
nsCSSValueList::AppendToString(nsCSSProperty aProperty, nsAString& aResult) const
{
const nsCSSValueList* val = this;
for (;;) {
val->mValue.AppendToString(aProperty, aResult);
val = val->mNext;
if (!val)
break;
if (nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_VALUE_LIST_USES_COMMAS))
aResult.Append(PRUnichar(','));
aResult.Append(PRUnichar(' '));
}
}
bool
nsCSSValueList::operator==(const nsCSSValueList& aOther) const
{
if (this == &aOther)
return true;
const nsCSSValueList *p1 = this, *p2 = &aOther;
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
}
// --- 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) const
{
NS_ABORT_IF_FALSE(mTop.GetUnit() != eCSSUnit_Null &&
mTop.GetUnit() != eCSSUnit_Inherit &&
mTop.GetUnit() != eCSSUnit_Initial,
"parser should have used a bare value");
NS_NAMED_LITERAL_STRING(comma, ", ");
aResult.AppendLiteral("rect(");
mTop.AppendToString(aProperty, aResult);
aResult.Append(comma);
mRight.AppendToString(aProperty, aResult);
aResult.Append(comma);
mBottom.AppendToString(aProperty, aResult);
aResult.Append(comma);
mLeft.AppendToString(aProperty, aResult);
aResult.Append(PRUnichar(')'));
}
void nsCSSRect::SetAllSidesTo(const nsCSSValue& aValue)
{
mTop = aValue;
mRight = aValue;
mBottom = aValue;
mLeft = aValue;
}
PR_STATIC_ASSERT(NS_SIDE_TOP == 0 && NS_SIDE_RIGHT == 1 &&
NS_SIDE_BOTTOM == 2 && NS_SIDE_LEFT == 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) const
{
mXValue.AppendToString(aProperty, aResult);
if (mYValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(PRUnichar(' '));
mYValue.AppendToString(aProperty, aResult);
}
}
// --- 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;
}
return result;
}
void
nsCSSValuePairList::AppendToString(nsCSSProperty aProperty,
nsAString& aResult) const
{
const nsCSSValuePairList* item = this;
for (;;) {
NS_ABORT_IF_FALSE(item->mXValue.GetUnit() != eCSSUnit_Null,
"unexpected null unit");
item->mXValue.AppendToString(aProperty, aResult);
if (item->mXValue.GetUnit() != eCSSUnit_Inherit &&
item->mXValue.GetUnit() != eCSSUnit_Initial &&
item->mYValue.GetUnit() != eCSSUnit_Null) {
aResult.Append(PRUnichar(' '));
item->mYValue.AppendToString(aProperty, aResult);
}
item = item->mNext;
if (!item)
break;
if (nsCSSProps::PropHasFlags(aProperty,
CSS_PROPERTY_VALUE_LIST_USES_COMMAS))
aResult.Append(PRUnichar(','));
aResult.Append(PRUnichar(' '));
}
}
bool
nsCSSValuePairList::operator==(const nsCSSValuePairList& aOther) const
{
if (this == &aOther)
return true;
const nsCSSValuePairList *p1 = this, *p2 = &aOther;
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
}
nsCSSValue::URL::URL(nsIURI* aURI, nsStringBuffer* aString, nsIURI* aReferrer,
nsIPrincipal* aOriginPrincipal)
: mURI(aURI),
mString(aString),
mReferrer(aReferrer),
mOriginPrincipal(aOriginPrincipal)
{
NS_ABORT_IF_FALSE(aOriginPrincipal, "Must have an origin principal");
mString->AddRef();
}
nsCSSValue::URL::~URL()
{
mString->Release();
}
PRBool
nsCSSValue::URL::operator==(const URL& aOther) const
{
PRBool eq;
return NS_strcmp(GetBufferValue(mString),
GetBufferValue(aOther.mString)) == 0 &&
(mURI == aOther.mURI || // 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));
}
PRBool
nsCSSValue::URL::URIEquals(const URL& aOther) const
{
PRBool eq;
// Worth comparing mURI to aOther.mURI 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));
}
nsCSSValue::Image::Image(nsIURI* aURI, nsStringBuffer* aString,
nsIURI* aReferrer, nsIPrincipal* aOriginPrincipal,
nsIDocument* aDocument)
: URL(aURI, aString, aReferrer, aOriginPrincipal)
{
if (aDocument->GetOriginalDocument()) {
aDocument = aDocument->GetOriginalDocument();
}
if (mURI &&
nsContentUtils::CanLoadImage(mURI, aDocument, aDocument,
aOriginPrincipal)) {
nsContentUtils::LoadImage(mURI, aDocument, aOriginPrincipal, aReferrer,
nsnull, nsIRequest::LOAD_NORMAL,
getter_AddRefs(mRequest));
}
}
nsCSSValue::Image::~Image()
{
}
nsCSSValueGradientStop::nsCSSValueGradientStop()
: mLocation(eCSSUnit_None),
mColor(eCSSUnit_Null)
{
MOZ_COUNT_CTOR(nsCSSValueGradientStop);
}
nsCSSValueGradientStop::nsCSSValueGradientStop(const nsCSSValueGradientStop& aOther)
: mLocation(aOther.mLocation),
mColor(aOther.mColor)
{
MOZ_COUNT_CTOR(nsCSSValueGradientStop);
}
nsCSSValueGradientStop::~nsCSSValueGradientStop()
{
MOZ_COUNT_DTOR(nsCSSValueGradientStop);
}
nsCSSValueGradient::nsCSSValueGradient(PRBool aIsRadial,
PRBool aIsRepeating)
: mIsRadial(aIsRadial),
mIsRepeating(aIsRepeating),
mBgPos(eCSSUnit_None),
mAngle(eCSSUnit_None),
mRadialShape(eCSSUnit_None),
mRadialSize(eCSSUnit_None)
{
}
// --- 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();
}
}
PR_STATIC_ASSERT(NS_CORNER_TOP_LEFT == 0 && NS_CORNER_TOP_RIGHT == 1 && \
NS_CORNER_BOTTOM_RIGHT == 2 && NS_CORNER_BOTTOM_LEFT == 3);
/* static */ const nsCSSCornerSizes::corner_type
nsCSSCornerSizes::corners[4] = {
&nsCSSCornerSizes::mTopLeft,
&nsCSSCornerSizes::mTopRight,
&nsCSSCornerSizes::mBottomRight,
&nsCSSCornerSizes::mBottomLeft,
};
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