3986 lines
142 KiB
C++
3986 lines
142 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
/* Utilities for animation of computed style values */
|
|
|
|
#include "mozilla/ArrayUtils.h"
|
|
#include "mozilla/MathAlgorithms.h"
|
|
#include "mozilla/RuleNodeCacheConditions.h"
|
|
#include "mozilla/StyleAnimationValue.h"
|
|
#include "nsStyleTransformMatrix.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsIStyleRule.h"
|
|
#include "mozilla/css/StyleRule.h"
|
|
#include "nsString.h"
|
|
#include "nsStyleContext.h"
|
|
#include "nsStyleSet.h"
|
|
#include "nsComputedDOMStyle.h"
|
|
#include "nsCSSParser.h"
|
|
#include "mozilla/css/Declaration.h"
|
|
#include "mozilla/dom/Element.h"
|
|
#include "mozilla/FloatingPoint.h"
|
|
#include "mozilla/Likely.h"
|
|
#include "gfxMatrix.h"
|
|
#include "gfxQuaternion.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIFrame.h"
|
|
#include "gfx2DGlue.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::gfx;
|
|
|
|
// HELPER METHODS
|
|
// --------------
|
|
/*
|
|
* Given two units, this method returns a common unit that they can both be
|
|
* converted into, if possible. This is intended to facilitate
|
|
* interpolation, distance-computation, and addition between "similar" units.
|
|
*
|
|
* The ordering of the arguments should not affect the output of this method.
|
|
*
|
|
* If there's no sensible common unit, this method returns eUnit_Null.
|
|
*
|
|
* @param aFirstUnit One unit to resolve.
|
|
* @param aFirstUnit The other unit to resolve.
|
|
* @return A "common" unit that both source units can be converted into, or
|
|
* eUnit_Null if that's not possible.
|
|
*/
|
|
static
|
|
StyleAnimationValue::Unit
|
|
GetCommonUnit(nsCSSProperty aProperty,
|
|
StyleAnimationValue::Unit aFirstUnit,
|
|
StyleAnimationValue::Unit aSecondUnit)
|
|
{
|
|
if (aFirstUnit != aSecondUnit) {
|
|
if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
|
|
(aFirstUnit == StyleAnimationValue::eUnit_Coord ||
|
|
aFirstUnit == StyleAnimationValue::eUnit_Percent ||
|
|
aFirstUnit == StyleAnimationValue::eUnit_Calc) &&
|
|
(aSecondUnit == StyleAnimationValue::eUnit_Coord ||
|
|
aSecondUnit == StyleAnimationValue::eUnit_Percent ||
|
|
aSecondUnit == StyleAnimationValue::eUnit_Calc)) {
|
|
// We can use calc() as the common unit.
|
|
return StyleAnimationValue::eUnit_Calc;
|
|
}
|
|
return StyleAnimationValue::eUnit_Null;
|
|
}
|
|
return aFirstUnit;
|
|
}
|
|
|
|
static
|
|
nsCSSUnit
|
|
GetCommonUnit(nsCSSProperty aProperty,
|
|
nsCSSUnit aFirstUnit,
|
|
nsCSSUnit aSecondUnit)
|
|
{
|
|
if (aFirstUnit != aSecondUnit) {
|
|
if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
|
|
(aFirstUnit == eCSSUnit_Pixel ||
|
|
aFirstUnit == eCSSUnit_Percent ||
|
|
aFirstUnit == eCSSUnit_Calc) &&
|
|
(aSecondUnit == eCSSUnit_Pixel ||
|
|
aSecondUnit == eCSSUnit_Percent ||
|
|
aSecondUnit == eCSSUnit_Calc)) {
|
|
// We can use calc() as the common unit.
|
|
return eCSSUnit_Calc;
|
|
}
|
|
return eCSSUnit_Null;
|
|
}
|
|
return aFirstUnit;
|
|
}
|
|
|
|
static nsCSSKeyword
|
|
ToPrimitive(nsCSSKeyword aKeyword)
|
|
{
|
|
switch (aKeyword) {
|
|
case eCSSKeyword_translatex:
|
|
case eCSSKeyword_translatey:
|
|
case eCSSKeyword_translatez:
|
|
case eCSSKeyword_translate:
|
|
return eCSSKeyword_translate3d;
|
|
case eCSSKeyword_scalex:
|
|
case eCSSKeyword_scaley:
|
|
case eCSSKeyword_scalez:
|
|
case eCSSKeyword_scale:
|
|
return eCSSKeyword_scale3d;
|
|
default:
|
|
return aKeyword;
|
|
}
|
|
}
|
|
|
|
static already_AddRefed<nsCSSValue::Array>
|
|
AppendFunction(nsCSSKeyword aTransformFunction)
|
|
{
|
|
uint32_t nargs;
|
|
switch (aTransformFunction) {
|
|
case eCSSKeyword_matrix3d:
|
|
nargs = 16;
|
|
break;
|
|
case eCSSKeyword_matrix:
|
|
nargs = 6;
|
|
break;
|
|
case eCSSKeyword_rotate3d:
|
|
nargs = 4;
|
|
break;
|
|
case eCSSKeyword_interpolatematrix:
|
|
case eCSSKeyword_translate3d:
|
|
case eCSSKeyword_scale3d:
|
|
nargs = 3;
|
|
break;
|
|
case eCSSKeyword_translate:
|
|
case eCSSKeyword_skew:
|
|
case eCSSKeyword_scale:
|
|
nargs = 2;
|
|
break;
|
|
default:
|
|
NS_ERROR("must be a transform function");
|
|
case eCSSKeyword_translatex:
|
|
case eCSSKeyword_translatey:
|
|
case eCSSKeyword_translatez:
|
|
case eCSSKeyword_scalex:
|
|
case eCSSKeyword_scaley:
|
|
case eCSSKeyword_scalez:
|
|
case eCSSKeyword_skewx:
|
|
case eCSSKeyword_skewy:
|
|
case eCSSKeyword_rotate:
|
|
case eCSSKeyword_rotatex:
|
|
case eCSSKeyword_rotatey:
|
|
case eCSSKeyword_rotatez:
|
|
case eCSSKeyword_perspective:
|
|
nargs = 1;
|
|
break;
|
|
}
|
|
|
|
RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(nargs + 1);
|
|
arr->Item(0).SetIntValue(aTransformFunction, eCSSUnit_Enumerated);
|
|
|
|
return arr.forget();
|
|
}
|
|
|
|
static already_AddRefed<nsCSSValue::Array>
|
|
ToPrimitive(nsCSSValue::Array* aArray)
|
|
{
|
|
nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(aArray);
|
|
nsCSSKeyword primitive = ToPrimitive(tfunc);
|
|
RefPtr<nsCSSValue::Array> arr = AppendFunction(primitive);
|
|
|
|
// FIXME: This would produce fewer calc() expressions if the
|
|
// zero were of compatible type (length vs. percent) when
|
|
// needed.
|
|
|
|
nsCSSValue zero(0.0f, eCSSUnit_Pixel);
|
|
nsCSSValue one(1.0f, eCSSUnit_Number);
|
|
switch(tfunc) {
|
|
case eCSSKeyword_translate:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2 || aArray->Count() == 3,
|
|
"unexpected count");
|
|
arr->Item(1) = aArray->Item(1);
|
|
arr->Item(2) = aArray->Count() == 3 ? aArray->Item(2) : zero;
|
|
arr->Item(3) = zero;
|
|
break;
|
|
}
|
|
case eCSSKeyword_translatex:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = aArray->Item(1);
|
|
arr->Item(2) = zero;
|
|
arr->Item(3) = zero;
|
|
break;
|
|
}
|
|
case eCSSKeyword_translatey:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = zero;
|
|
arr->Item(2) = aArray->Item(1);
|
|
arr->Item(3) = zero;
|
|
break;
|
|
}
|
|
case eCSSKeyword_translatez:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = zero;
|
|
arr->Item(2) = zero;
|
|
arr->Item(3) = aArray->Item(1);
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2 || aArray->Count() == 3,
|
|
"unexpected count");
|
|
arr->Item(1) = aArray->Item(1);
|
|
arr->Item(2) = aArray->Count() == 3 ? aArray->Item(2) : aArray->Item(1);
|
|
arr->Item(3) = one;
|
|
break;
|
|
}
|
|
case eCSSKeyword_scalex:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = aArray->Item(1);
|
|
arr->Item(2) = one;
|
|
arr->Item(3) = one;
|
|
break;
|
|
}
|
|
case eCSSKeyword_scaley:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = one;
|
|
arr->Item(2) = aArray->Item(1);
|
|
arr->Item(3) = one;
|
|
break;
|
|
}
|
|
case eCSSKeyword_scalez:
|
|
{
|
|
MOZ_ASSERT(aArray->Count() == 2, "unexpected count");
|
|
arr->Item(1) = one;
|
|
arr->Item(2) = one;
|
|
arr->Item(3) = aArray->Item(1);
|
|
break;
|
|
}
|
|
default:
|
|
arr = aArray;
|
|
}
|
|
return arr.forget();
|
|
}
|
|
|
|
inline void
|
|
nscoordToCSSValue(nscoord aCoord, nsCSSValue& aCSSValue)
|
|
{
|
|
aCSSValue.SetFloatValue(nsPresContext::AppUnitsToFloatCSSPixels(aCoord),
|
|
eCSSUnit_Pixel);
|
|
}
|
|
|
|
static void
|
|
AppendCSSShadowValue(const nsCSSShadowItem *aShadow,
|
|
nsCSSValueList **&aResultTail)
|
|
{
|
|
MOZ_ASSERT(aShadow, "shadow expected");
|
|
|
|
// X, Y, Radius, Spread, Color, Inset
|
|
RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(6);
|
|
nscoordToCSSValue(aShadow->mXOffset, arr->Item(0));
|
|
nscoordToCSSValue(aShadow->mYOffset, arr->Item(1));
|
|
nscoordToCSSValue(aShadow->mRadius, arr->Item(2));
|
|
// NOTE: This code sometimes stores mSpread: 0 even when
|
|
// the parser would be required to leave it null.
|
|
nscoordToCSSValue(aShadow->mSpread, arr->Item(3));
|
|
if (aShadow->mHasColor) {
|
|
arr->Item(4).SetColorValue(aShadow->mColor);
|
|
}
|
|
if (aShadow->mInset) {
|
|
arr->Item(5).SetIntValue(NS_STYLE_BOX_SHADOW_INSET,
|
|
eCSSUnit_Enumerated);
|
|
}
|
|
|
|
nsCSSValueList *resultItem = new nsCSSValueList;
|
|
resultItem->mValue.SetArrayValue(arr, eCSSUnit_Array);
|
|
*aResultTail = resultItem;
|
|
aResultTail = &resultItem->mNext;
|
|
}
|
|
|
|
// Like nsStyleCoord::CalcValue, but with length in float pixels instead
|
|
// of nscoord.
|
|
struct PixelCalcValue {
|
|
float mLength, mPercent;
|
|
bool mHasPercent;
|
|
};
|
|
|
|
// Requires a canonical calc() value that we generated.
|
|
static PixelCalcValue
|
|
ExtractCalcValueInternal(const nsCSSValue& aValue)
|
|
{
|
|
MOZ_ASSERT(aValue.GetUnit() == eCSSUnit_Calc, "unexpected unit");
|
|
nsCSSValue::Array *arr = aValue.GetArrayValue();
|
|
MOZ_ASSERT(arr->Count() == 1, "unexpected length");
|
|
|
|
const nsCSSValue &topval = arr->Item(0);
|
|
PixelCalcValue result;
|
|
if (topval.GetUnit() == eCSSUnit_Pixel) {
|
|
result.mLength = topval.GetFloatValue();
|
|
result.mPercent = 0.0f;
|
|
result.mHasPercent = false;
|
|
} else {
|
|
MOZ_ASSERT(topval.GetUnit() == eCSSUnit_Calc_Plus,
|
|
"unexpected unit");
|
|
nsCSSValue::Array *arr2 = topval.GetArrayValue();
|
|
const nsCSSValue &len = arr2->Item(0);
|
|
const nsCSSValue &pct = arr2->Item(1);
|
|
MOZ_ASSERT(len.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
MOZ_ASSERT(pct.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
result.mLength = len.GetFloatValue();
|
|
result.mPercent = pct.GetPercentValue();
|
|
result.mHasPercent = true;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Requires a canonical calc() value that we generated.
|
|
static PixelCalcValue
|
|
ExtractCalcValue(const StyleAnimationValue& aValue)
|
|
{
|
|
PixelCalcValue result;
|
|
if (aValue.GetUnit() == StyleAnimationValue::eUnit_Coord) {
|
|
result.mLength =
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aValue.GetCoordValue());
|
|
result.mPercent = 0.0f;
|
|
result.mHasPercent = false;
|
|
return result;
|
|
}
|
|
if (aValue.GetUnit() == StyleAnimationValue::eUnit_Percent) {
|
|
result.mLength = 0.0f;
|
|
result.mPercent = aValue.GetPercentValue();
|
|
result.mHasPercent = true;
|
|
return result;
|
|
}
|
|
MOZ_ASSERT(aValue.GetUnit() == StyleAnimationValue::eUnit_Calc,
|
|
"unexpected unit");
|
|
nsCSSValue *val = aValue.GetCSSValueValue();
|
|
return ExtractCalcValueInternal(*val);
|
|
}
|
|
|
|
static PixelCalcValue
|
|
ExtractCalcValue(const nsCSSValue& aValue)
|
|
{
|
|
PixelCalcValue result;
|
|
if (aValue.GetUnit() == eCSSUnit_Pixel) {
|
|
result.mLength = aValue.GetFloatValue();
|
|
result.mPercent = 0.0f;
|
|
result.mHasPercent = false;
|
|
return result;
|
|
}
|
|
if (aValue.GetUnit() == eCSSUnit_Percent) {
|
|
result.mLength = 0.0f;
|
|
result.mPercent = aValue.GetPercentValue();
|
|
result.mHasPercent = true;
|
|
return result;
|
|
}
|
|
return ExtractCalcValueInternal(aValue);
|
|
}
|
|
|
|
static void
|
|
SetCalcValue(const nsStyleCoord::CalcValue* aCalc, nsCSSValue& aValue)
|
|
{
|
|
RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(1);
|
|
if (!aCalc->mHasPercent) {
|
|
nscoordToCSSValue(aCalc->mLength, arr->Item(0));
|
|
} else {
|
|
nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
|
|
arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
|
|
nscoordToCSSValue(aCalc->mLength, arr2->Item(0));
|
|
arr2->Item(1).SetPercentValue(aCalc->mPercent);
|
|
}
|
|
|
|
aValue.SetArrayValue(arr, eCSSUnit_Calc);
|
|
}
|
|
|
|
static void
|
|
SetCalcValue(const PixelCalcValue& aCalc, nsCSSValue& aValue)
|
|
{
|
|
RefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(1);
|
|
if (!aCalc.mHasPercent) {
|
|
arr->Item(0).SetFloatValue(aCalc.mLength, eCSSUnit_Pixel);
|
|
} else {
|
|
nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
|
|
arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
|
|
arr2->Item(0).SetFloatValue(aCalc.mLength, eCSSUnit_Pixel);
|
|
arr2->Item(1).SetPercentValue(aCalc.mPercent);
|
|
}
|
|
|
|
aValue.SetArrayValue(arr, eCSSUnit_Calc);
|
|
}
|
|
|
|
static already_AddRefed<nsStringBuffer>
|
|
GetURIAsUtf16StringBuffer(nsIURI* aUri)
|
|
{
|
|
nsAutoCString utf8String;
|
|
nsresult rv = aUri->GetSpec(utf8String);
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
|
|
return nsCSSValue::BufferFromString(NS_ConvertUTF8toUTF16(utf8String));
|
|
}
|
|
|
|
double
|
|
CalcPositionSquareDistance(const nsCSSValue& aPos1,
|
|
const nsCSSValue& aPos2)
|
|
{
|
|
NS_ASSERTION(aPos1.GetUnit() == eCSSUnit_Array &&
|
|
aPos2.GetUnit() == eCSSUnit_Array,
|
|
"Expected two arrays");
|
|
|
|
PixelCalcValue calcVal[4];
|
|
|
|
nsCSSValue::Array* posArray = aPos1.GetArrayValue();
|
|
MOZ_ASSERT(posArray->Count() == 4, "Invalid position value");
|
|
NS_ASSERTION(posArray->Item(0).GetUnit() == eCSSUnit_Null &&
|
|
posArray->Item(2).GetUnit() == eCSSUnit_Null,
|
|
"Invalid list used");
|
|
for (int i = 0; i < 2; ++i) {
|
|
MOZ_ASSERT(posArray->Item(i*2+1).GetUnit() != eCSSUnit_Null,
|
|
"Invalid position value");
|
|
calcVal[i] = ExtractCalcValue(posArray->Item(i*2+1));
|
|
}
|
|
|
|
posArray = aPos2.GetArrayValue();
|
|
MOZ_ASSERT(posArray->Count() == 4, "Invalid position value");
|
|
NS_ASSERTION(posArray->Item(0).GetUnit() == eCSSUnit_Null &&
|
|
posArray->Item(2).GetUnit() == eCSSUnit_Null,
|
|
"Invalid list used");
|
|
for (int i = 0; i < 2; ++i) {
|
|
MOZ_ASSERT(posArray->Item(i*2+1).GetUnit() != eCSSUnit_Null,
|
|
"Invalid position value");
|
|
calcVal[i+2] = ExtractCalcValue(posArray->Item(i*2+1));
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
for (int i = 0; i < 2; ++i) {
|
|
float difflen = calcVal[i+2].mLength - calcVal[i].mLength;
|
|
float diffpct = calcVal[i+2].mPercent - calcVal[i].mPercent;
|
|
squareDistance += difflen * difflen + diffpct * diffpct;
|
|
}
|
|
|
|
return squareDistance;
|
|
}
|
|
|
|
// CLASS METHODS
|
|
// -------------
|
|
|
|
bool
|
|
StyleAnimationValue::ComputeDistance(nsCSSProperty aProperty,
|
|
const StyleAnimationValue& aStartValue,
|
|
const StyleAnimationValue& aEndValue,
|
|
double& aDistance)
|
|
{
|
|
Unit commonUnit =
|
|
GetCommonUnit(aProperty, aStartValue.GetUnit(), aEndValue.GetUnit());
|
|
|
|
switch (commonUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_Normal:
|
|
case eUnit_UnparsedString:
|
|
return false;
|
|
|
|
case eUnit_Enumerated:
|
|
switch (aProperty) {
|
|
case eCSSProperty_font_stretch: {
|
|
// just like eUnit_Integer.
|
|
int32_t startInt = aStartValue.GetIntValue();
|
|
int32_t endInt = aEndValue.GetIntValue();
|
|
aDistance = Abs(endInt - startInt);
|
|
return true;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
case eUnit_Visibility: {
|
|
int32_t startEnum = aStartValue.GetIntValue();
|
|
int32_t endEnum = aEndValue.GetIntValue();
|
|
if (startEnum == endEnum) {
|
|
aDistance = 0;
|
|
return true;
|
|
}
|
|
if ((startEnum == NS_STYLE_VISIBILITY_VISIBLE) ==
|
|
(endEnum == NS_STYLE_VISIBILITY_VISIBLE)) {
|
|
return false;
|
|
}
|
|
aDistance = 1;
|
|
return true;
|
|
}
|
|
case eUnit_Integer: {
|
|
int32_t startInt = aStartValue.GetIntValue();
|
|
int32_t endInt = aEndValue.GetIntValue();
|
|
aDistance = Abs(double(endInt) - double(startInt));
|
|
return true;
|
|
}
|
|
case eUnit_Coord: {
|
|
nscoord startCoord = aStartValue.GetCoordValue();
|
|
nscoord endCoord = aEndValue.GetCoordValue();
|
|
aDistance = Abs(double(endCoord) - double(startCoord));
|
|
return true;
|
|
}
|
|
case eUnit_Percent: {
|
|
float startPct = aStartValue.GetPercentValue();
|
|
float endPct = aEndValue.GetPercentValue();
|
|
aDistance = Abs(double(endPct) - double(startPct));
|
|
return true;
|
|
}
|
|
case eUnit_Float: {
|
|
float startFloat = aStartValue.GetFloatValue();
|
|
float endFloat = aEndValue.GetFloatValue();
|
|
aDistance = Abs(double(endFloat) - double(startFloat));
|
|
return true;
|
|
}
|
|
case eUnit_Color: {
|
|
// http://www.w3.org/TR/smil-animation/#animateColorElement says
|
|
// that we should use Euclidean RGB cube distance. However, we
|
|
// have to extend that to RGBA. For now, we'll just use the
|
|
// Euclidean distance in the (part of the) 4-cube of premultiplied
|
|
// colors.
|
|
// FIXME (spec): The CSS transitions spec doesn't say whether
|
|
// colors are premultiplied, but things work better when they are,
|
|
// so use premultiplication. Spec issue is still open per
|
|
// http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
|
|
nscolor startColor = aStartValue.GetColorValue();
|
|
nscolor endColor = aEndValue.GetColorValue();
|
|
|
|
// Get a color component on a 0-1 scale, which is much easier to
|
|
// deal with when working with alpha.
|
|
#define GET_COMPONENT(component_, color_) \
|
|
(NS_GET_##component_(color_) * (1.0 / 255.0))
|
|
|
|
double startA = GET_COMPONENT(A, startColor);
|
|
double startR = GET_COMPONENT(R, startColor) * startA;
|
|
double startG = GET_COMPONENT(G, startColor) * startA;
|
|
double startB = GET_COMPONENT(B, startColor) * startA;
|
|
double endA = GET_COMPONENT(A, endColor);
|
|
double endR = GET_COMPONENT(R, endColor) * endA;
|
|
double endG = GET_COMPONENT(G, endColor) * endA;
|
|
double endB = GET_COMPONENT(B, endColor) * endA;
|
|
|
|
#undef GET_COMPONENT
|
|
|
|
double diffA = startA - endA;
|
|
double diffR = startR - endR;
|
|
double diffG = startG - endG;
|
|
double diffB = startB - endB;
|
|
aDistance = sqrt(diffA * diffA + diffR * diffR +
|
|
diffG * diffG + diffB * diffB);
|
|
return true;
|
|
}
|
|
case eUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(aStartValue);
|
|
PixelCalcValue v2 = ExtractCalcValue(aEndValue);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
aDistance = sqrt(difflen * difflen + diffpct * diffpct);
|
|
return true;
|
|
}
|
|
case eUnit_ObjectPosition: {
|
|
const nsCSSValue* position1 = aStartValue.GetCSSValueValue();
|
|
const nsCSSValue* position2 = aEndValue.GetCSSValueValue();
|
|
double squareDistance =
|
|
CalcPositionSquareDistance(*position1,
|
|
*position2);
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
const nsCSSValuePair *pair1 = aStartValue.GetCSSValuePairValue();
|
|
const nsCSSValuePair *pair2 = aEndValue.GetCSSValuePairValue();
|
|
nsCSSUnit unit[2];
|
|
unit[0] = GetCommonUnit(aProperty, pair1->mXValue.GetUnit(),
|
|
pair2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, pair1->mYValue.GetUnit(),
|
|
pair2->mYValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[0] == eCSSUnit_URL || unit[0] == eCSSUnit_Enumerated) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
|
|
&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
|
|
};
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
nsCSSValue nsCSSValuePair::*member = pairValues[i];
|
|
double diffsquared;
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel: {
|
|
float diff = (pair1->*member).GetFloatValue() -
|
|
(pair2->*member).GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = (pair1->*member).GetPercentValue() -
|
|
(pair2->*member).GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(pair1->*member);
|
|
PixelCalcValue v2 = ExtractCalcValue(pair2->*member);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValueTriplet: {
|
|
const nsCSSValueTriplet *triplet1 = aStartValue.GetCSSValueTripletValue();
|
|
const nsCSSValueTriplet *triplet2 = aEndValue.GetCSSValueTripletValue();
|
|
nsCSSUnit unit[3];
|
|
unit[0] = GetCommonUnit(aProperty, triplet1->mXValue.GetUnit(),
|
|
triplet2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, triplet1->mYValue.GetUnit(),
|
|
triplet2->mYValue.GetUnit());
|
|
unit[2] = GetCommonUnit(aProperty, triplet1->mZValue.GetUnit(),
|
|
triplet2->mZValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[2] == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
static nsCSSValue nsCSSValueTriplet::* const pairValues[3] = {
|
|
&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
|
|
};
|
|
for (uint32_t i = 0; i < 3; ++i) {
|
|
nsCSSValue nsCSSValueTriplet::*member = pairValues[i];
|
|
double diffsquared;
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel: {
|
|
float diff = (triplet1->*member).GetFloatValue() -
|
|
(triplet2->*member).GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = (triplet1->*member).GetPercentValue() -
|
|
(triplet2->*member).GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(triplet1->*member);
|
|
PixelCalcValue v2 = ExtractCalcValue(triplet2->*member);
|
|
float difflen = v2.mLength - v1.mLength;
|
|
float diffpct = v2.mPercent - v1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
case eCSSUnit_Null:
|
|
diffsquared = 0;
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSRect: {
|
|
const nsCSSRect *rect1 = aStartValue.GetCSSRectValue();
|
|
const nsCSSRect *rect2 = aEndValue.GetCSSRectValue();
|
|
if (rect1->mTop.GetUnit() != rect2->mTop.GetUnit() ||
|
|
rect1->mRight.GetUnit() != rect2->mRight.GetUnit() ||
|
|
rect1->mBottom.GetUnit() != rect2->mBottom.GetUnit() ||
|
|
rect1->mLeft.GetUnit() != rect2->mLeft.GetUnit()) {
|
|
// At least until we have calc()
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
for (uint32_t i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
MOZ_ASSERT((rect1->*member).GetUnit() == (rect2->*member).GetUnit(),
|
|
"should have returned above");
|
|
double diff;
|
|
switch ((rect1->*member).GetUnit()) {
|
|
case eCSSUnit_Pixel:
|
|
diff = (rect1->*member).GetFloatValue() -
|
|
(rect2->*member).GetFloatValue();
|
|
break;
|
|
case eCSSUnit_Auto:
|
|
diff = 0;
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diff * diff;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Dasharray: {
|
|
// NOTE: This produces results on substantially different scales
|
|
// for length values and percentage values, which might even be
|
|
// mixed in the same property value. This means the result isn't
|
|
// particularly useful for paced animation.
|
|
|
|
// Call AddWeighted to make us lists of the same length.
|
|
StyleAnimationValue normValue1, normValue2;
|
|
if (!AddWeighted(aProperty, 1.0, aStartValue, 0.0, aEndValue,
|
|
normValue1) ||
|
|
!AddWeighted(aProperty, 0.0, aStartValue, 1.0, aEndValue,
|
|
normValue2)) {
|
|
return false;
|
|
}
|
|
|
|
double squareDistance = 0.0;
|
|
const nsCSSValueList *list1 = normValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = normValue2.GetCSSValueListValue();
|
|
|
|
MOZ_ASSERT(!list1 == !list2, "lists should be same length");
|
|
while (list1) {
|
|
const nsCSSValue &val1 = list1->mValue;
|
|
const nsCSSValue &val2 = list2->mValue;
|
|
|
|
MOZ_ASSERT(val1.GetUnit() == val2.GetUnit(),
|
|
"unit match should be assured by AddWeighted");
|
|
double diff;
|
|
switch (val1.GetUnit()) {
|
|
case eCSSUnit_Percent:
|
|
diff = val1.GetPercentValue() - val2.GetPercentValue();
|
|
break;
|
|
case eCSSUnit_Number:
|
|
diff = val1.GetFloatValue() - val2.GetFloatValue();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diff * diff;
|
|
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
MOZ_ASSERT(!list1 == !list2, "lists should be same length");
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Shadow: {
|
|
// Call AddWeighted to make us lists of the same length.
|
|
StyleAnimationValue normValue1, normValue2;
|
|
if (!AddWeighted(aProperty, 1.0, aStartValue, 0.0, aEndValue,
|
|
normValue1) ||
|
|
!AddWeighted(aProperty, 0.0, aStartValue, 1.0, aEndValue,
|
|
normValue2)) {
|
|
return false;
|
|
}
|
|
|
|
const nsCSSValueList *shadow1 = normValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *shadow2 = normValue2.GetCSSValueListValue();
|
|
|
|
double squareDistance = 0.0;
|
|
MOZ_ASSERT(!shadow1 == !shadow2, "lists should be same length");
|
|
while (shadow1) {
|
|
nsCSSValue::Array *array1 = shadow1->mValue.GetArrayValue();
|
|
nsCSSValue::Array *array2 = shadow2->mValue.GetArrayValue();
|
|
for (size_t i = 0; i < 4; ++i) {
|
|
MOZ_ASSERT(array1->Item(i).GetUnit() == eCSSUnit_Pixel,
|
|
"unexpected unit");
|
|
MOZ_ASSERT(array2->Item(i).GetUnit() == eCSSUnit_Pixel,
|
|
"unexpected unit");
|
|
double diff = array1->Item(i).GetFloatValue() -
|
|
array2->Item(i).GetFloatValue();
|
|
squareDistance += diff * diff;
|
|
}
|
|
|
|
const nsCSSValue &color1 = array1->Item(4);
|
|
const nsCSSValue &color2 = array2->Item(4);
|
|
#ifdef DEBUG
|
|
{
|
|
const nsCSSValue &inset1 = array1->Item(5);
|
|
const nsCSSValue &inset2 = array2->Item(5);
|
|
// There are only two possible states of the inset value:
|
|
// (1) GetUnit() == eCSSUnit_Null
|
|
// (2) GetUnit() == eCSSUnit_Enumerated &&
|
|
// GetIntValue() == NS_STYLE_BOX_SHADOW_INSET
|
|
MOZ_ASSERT(((color1.IsNumericColorUnit() &&
|
|
color2.IsNumericColorUnit()) ||
|
|
(color1.GetUnit() == color2.GetUnit())) &&
|
|
inset1 == inset2,
|
|
"AddWeighted should have failed");
|
|
}
|
|
#endif
|
|
|
|
if (color1.GetUnit() != eCSSUnit_Null) {
|
|
StyleAnimationValue color1Value
|
|
(color1.GetColorValue(), StyleAnimationValue::ColorConstructor);
|
|
StyleAnimationValue color2Value
|
|
(color2.GetColorValue(), StyleAnimationValue::ColorConstructor);
|
|
double colorDistance;
|
|
|
|
#ifdef DEBUG
|
|
bool ok =
|
|
#endif
|
|
StyleAnimationValue::ComputeDistance(eCSSProperty_color,
|
|
color1Value, color2Value,
|
|
colorDistance);
|
|
MOZ_ASSERT(ok, "should not fail");
|
|
squareDistance += colorDistance * colorDistance;
|
|
}
|
|
|
|
shadow1 = shadow1->mNext;
|
|
shadow2 = shadow2->mNext;
|
|
MOZ_ASSERT(!shadow1 == !shadow2, "lists should be same length");
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Filter:
|
|
// FIXME: Support paced animations for filter function interpolation.
|
|
case eUnit_Transform: {
|
|
return false;
|
|
}
|
|
case eUnit_BackgroundPosition: {
|
|
const nsCSSValueList *position1 = aStartValue.GetCSSValueListValue();
|
|
const nsCSSValueList *position2 = aEndValue.GetCSSValueListValue();
|
|
|
|
double squareDistance = 0.0;
|
|
MOZ_ASSERT(!position1 == !position2, "lists should be same length");
|
|
|
|
while (position1 && position2) {
|
|
squareDistance += CalcPositionSquareDistance(position1->mValue,
|
|
position2->mValue);
|
|
position1 = position1->mNext;
|
|
position2 = position2->mNext;
|
|
}
|
|
// fail if lists differ in length.
|
|
if (position1 || position2) {
|
|
return false;
|
|
}
|
|
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePairList: {
|
|
const nsCSSValuePairList *list1 = aStartValue.GetCSSValuePairListValue();
|
|
const nsCSSValuePairList *list2 = aEndValue.GetCSSValuePairListValue();
|
|
double squareDistance = 0.0;
|
|
do {
|
|
static nsCSSValue nsCSSValuePairList::* const pairListValues[] = {
|
|
&nsCSSValuePairList::mXValue,
|
|
&nsCSSValuePairList::mYValue,
|
|
};
|
|
for (uint32_t i = 0; i < ArrayLength(pairListValues); ++i) {
|
|
const nsCSSValue &v1 = list1->*(pairListValues[i]);
|
|
const nsCSSValue &v2 = list2->*(pairListValues[i]);
|
|
nsCSSUnit unit =
|
|
GetCommonUnit(aProperty, v1.GetUnit(), v2.GetUnit());
|
|
if (unit == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
double diffsquared = 0.0;
|
|
switch (unit) {
|
|
case eCSSUnit_Pixel: {
|
|
float diff = v1.GetFloatValue() - v2.GetFloatValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Percent: {
|
|
float diff = v1.GetPercentValue() - v2.GetPercentValue();
|
|
diffsquared = diff * diff;
|
|
break;
|
|
}
|
|
case eCSSUnit_Calc: {
|
|
PixelCalcValue val1 = ExtractCalcValue(v1);
|
|
PixelCalcValue val2 = ExtractCalcValue(v2);
|
|
float difflen = val2.mLength - val1.mLength;
|
|
float diffpct = val2.mPercent - val1.mPercent;
|
|
diffsquared = difflen * difflen + diffpct * diffpct;
|
|
break;
|
|
}
|
|
default:
|
|
if (v1 != v2) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
squareDistance += diffsquared;
|
|
}
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
} while (list1 && list2);
|
|
if (list1 || list2) {
|
|
// We can't interpolate lists of different lengths.
|
|
return false;
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(false, "Can't compute distance using the given common unit");
|
|
return false;
|
|
}
|
|
|
|
#define MAX_PACKED_COLOR_COMPONENT 255
|
|
|
|
inline uint8_t ClampColor(double aColor)
|
|
{
|
|
if (aColor >= MAX_PACKED_COLOR_COMPONENT)
|
|
return MAX_PACKED_COLOR_COMPONENT;
|
|
if (aColor <= 0.0)
|
|
return 0;
|
|
return NSToIntRound(aColor);
|
|
}
|
|
|
|
// Ensure that a float/double value isn't NaN by returning zero instead
|
|
// (NaN doesn't have a sign) as a general restriction for floating point
|
|
// values in RestrictValue.
|
|
template<typename T>
|
|
MOZ_ALWAYS_INLINE T
|
|
EnsureNotNan(T aValue)
|
|
{
|
|
return aValue;
|
|
}
|
|
template<>
|
|
MOZ_ALWAYS_INLINE float
|
|
EnsureNotNan(float aValue)
|
|
{
|
|
// This would benefit from a MOZ_FLOAT_IS_NaN if we had one.
|
|
return MOZ_LIKELY(!mozilla::IsNaN(aValue)) ? aValue : 0;
|
|
}
|
|
template<>
|
|
MOZ_ALWAYS_INLINE double
|
|
EnsureNotNan(double aValue)
|
|
{
|
|
return MOZ_LIKELY(!mozilla::IsNaN(aValue)) ? aValue : 0;
|
|
}
|
|
|
|
template <typename T>
|
|
T
|
|
RestrictValue(uint32_t aRestrictions, T aValue)
|
|
{
|
|
T result = EnsureNotNan(aValue);
|
|
switch (aRestrictions) {
|
|
case 0:
|
|
break;
|
|
case CSS_PROPERTY_VALUE_NONNEGATIVE:
|
|
if (result < 0) {
|
|
result = 0;
|
|
}
|
|
break;
|
|
case CSS_PROPERTY_VALUE_AT_LEAST_ONE:
|
|
if (result < 1) {
|
|
result = 1;
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "bad value restriction");
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <typename T>
|
|
T
|
|
RestrictValue(nsCSSProperty aProperty, T aValue)
|
|
{
|
|
return RestrictValue(nsCSSProps::ValueRestrictions(aProperty), aValue);
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePixel(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()),
|
|
eCSSUnit_Pixel);
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValueNumber(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()),
|
|
eCSSUnit_Number);
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePercent(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, uint32_t aValueRestrictions = 0)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
aResult.SetPercentValue(RestrictValue(aValueRestrictions,
|
|
aCoeff1 * aValue1.GetPercentValue() +
|
|
aCoeff2 * aValue2.GetPercentValue()));
|
|
}
|
|
|
|
// Add two canonical-form calc values (eUnit_Calc) to make another
|
|
// canonical-form calc value.
|
|
static void
|
|
AddCSSValueCanonicalCalc(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
PixelCalcValue v1 = ExtractCalcValue(aValue1);
|
|
PixelCalcValue v2 = ExtractCalcValue(aValue2);
|
|
PixelCalcValue result;
|
|
result.mLength = aCoeff1 * v1.mLength + aCoeff2 * v2.mLength;
|
|
result.mPercent = aCoeff1 * v1.mPercent + aCoeff2 * v2.mPercent;
|
|
result.mHasPercent = v1.mHasPercent || v2.mHasPercent;
|
|
MOZ_ASSERT(result.mHasPercent || result.mPercent == 0.0f,
|
|
"can't have a nonzero percentage part without having percentages");
|
|
SetCalcValue(result, aResult);
|
|
}
|
|
|
|
static void
|
|
AddCSSValueAngle(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
if (aValue1.GetUnit() == aValue2.GetUnit()) {
|
|
// To avoid floating point error, if the units match, maintain the unit.
|
|
aResult.SetFloatValue(aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue(),
|
|
aValue1.GetUnit());
|
|
} else {
|
|
aResult.SetFloatValue(aCoeff1 * aValue1.GetAngleValueInRadians() +
|
|
aCoeff2 * aValue2.GetAngleValueInRadians(),
|
|
eCSSUnit_Radian);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
AddCSSValuePixelPercentCalc(const uint32_t aValueRestrictions,
|
|
const nsCSSUnit aCommonUnit,
|
|
double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
switch (aCommonUnit) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult, aValueRestrictions);
|
|
break;
|
|
case eCSSUnit_Percent:
|
|
AddCSSValuePercent(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult, aValueRestrictions);
|
|
break;
|
|
case eCSSUnit_Calc:
|
|
AddCSSValueCanonicalCalc(aCoeff1, aValue1,
|
|
aCoeff2, aValue2,
|
|
aResult);
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline float
|
|
GetNumberOrPercent(const nsCSSValue &aValue)
|
|
{
|
|
nsCSSUnit unit = aValue.GetUnit();
|
|
MOZ_ASSERT(unit == eCSSUnit_Number || unit == eCSSUnit_Percent,
|
|
"unexpected unit");
|
|
return (unit == eCSSUnit_Number) ?
|
|
aValue.GetFloatValue() : aValue.GetPercentValue();
|
|
}
|
|
|
|
static inline void
|
|
AddCSSValuePercentNumber(const uint32_t aValueRestrictions,
|
|
double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult, float aInitialVal)
|
|
{
|
|
float n1 = GetNumberOrPercent(aValue1);
|
|
float n2 = GetNumberOrPercent(aValue2);
|
|
|
|
// Rather than interpolating aValue1 and aValue2 directly, we
|
|
// interpolate their *distances from aInitialVal* (the initial value,
|
|
// which is either 1 or 0 for "filter" functions). This matters in
|
|
// cases where aInitialVal is nonzero and the coefficients don't add
|
|
// up to 1. For example, if initialVal is 1, aCoeff1 is 0.5, and
|
|
// aCoeff2 is 0, then we'll return the value halfway between 1 and
|
|
// aValue1, rather than the value halfway between 0 and aValue1.
|
|
// Note that we do something similar in AddTransformScale().
|
|
float result = (n1 - aInitialVal) * aCoeff1 + (n2 - aInitialVal) * aCoeff2;
|
|
aResult.SetFloatValue(RestrictValue(aValueRestrictions, result + aInitialVal),
|
|
eCSSUnit_Number);
|
|
}
|
|
|
|
static bool
|
|
AddShadowItems(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValueList **&aResultTail)
|
|
{
|
|
// X, Y, Radius, Spread, Color, Inset
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
nsCSSValue::Array *array1 = aValue1.GetArrayValue();
|
|
nsCSSValue::Array *array2 = aValue2.GetArrayValue();
|
|
RefPtr<nsCSSValue::Array> resultArray = nsCSSValue::Array::Create(6);
|
|
|
|
for (size_t i = 0; i < 4; ++i) {
|
|
AddCSSValuePixel(aCoeff1, array1->Item(i), aCoeff2, array2->Item(i),
|
|
resultArray->Item(i),
|
|
// blur radius must be nonnegative
|
|
(i == 2) ? CSS_PROPERTY_VALUE_NONNEGATIVE : 0);
|
|
}
|
|
|
|
const nsCSSValue& color1 = array1->Item(4);
|
|
const nsCSSValue& color2 = array2->Item(4);
|
|
const nsCSSValue& inset1 = array1->Item(5);
|
|
const nsCSSValue& inset2 = array2->Item(5);
|
|
if (color1.GetUnit() != color2.GetUnit() ||
|
|
inset1.GetUnit() != inset2.GetUnit()) {
|
|
// We don't know how to animate between color and no-color, or
|
|
// between inset and not-inset.
|
|
return false;
|
|
}
|
|
|
|
if (color1.GetUnit() != eCSSUnit_Null) {
|
|
StyleAnimationValue color1Value
|
|
(color1.GetColorValue(), StyleAnimationValue::ColorConstructor);
|
|
StyleAnimationValue color2Value
|
|
(color2.GetColorValue(), StyleAnimationValue::ColorConstructor);
|
|
StyleAnimationValue resultColorValue;
|
|
#ifdef DEBUG
|
|
bool ok =
|
|
#endif
|
|
StyleAnimationValue::AddWeighted(eCSSProperty_color,
|
|
aCoeff1, color1Value,
|
|
aCoeff2, color2Value,
|
|
resultColorValue);
|
|
MOZ_ASSERT(ok, "should not fail");
|
|
resultArray->Item(4).SetColorValue(resultColorValue.GetColorValue());
|
|
}
|
|
|
|
MOZ_ASSERT(inset1 == inset2, "should match");
|
|
resultArray->Item(5) = inset1;
|
|
|
|
nsCSSValueList *resultItem = new nsCSSValueList;
|
|
resultItem->mValue.SetArrayValue(resultArray, eCSSUnit_Array);
|
|
*aResultTail = resultItem;
|
|
aResultTail = &resultItem->mNext;
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
AddTransformTranslate(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Percent ||
|
|
aValue1.GetUnit() == eCSSUnit_Pixel ||
|
|
aValue1.IsCalcUnit(),
|
|
"unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Percent ||
|
|
aValue2.GetUnit() == eCSSUnit_Pixel ||
|
|
aValue2.IsCalcUnit(),
|
|
"unexpected unit");
|
|
|
|
if (aValue1.GetUnit() != aValue2.GetUnit() || aValue1.IsCalcUnit()) {
|
|
// different units; create a calc() expression
|
|
AddCSSValueCanonicalCalc(aCoeff1, aValue1, aCoeff2, aValue2, aResult);
|
|
} else if (aValue1.GetUnit() == eCSSUnit_Percent) {
|
|
// both percent
|
|
AddCSSValuePercent(aCoeff1, aValue1, aCoeff2, aValue2, aResult);
|
|
} else {
|
|
// both pixels
|
|
AddCSSValuePixel(aCoeff1, aValue1, aCoeff2, aValue2, aResult);
|
|
}
|
|
}
|
|
|
|
static void
|
|
AddTransformScale(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
// Handle scale, and the two matrix components where identity is 1, by
|
|
// subtracting 1, multiplying by the coefficients, and then adding 1
|
|
// back. This gets the right AddWeighted behavior and gets us the
|
|
// interpolation-against-identity behavior for free.
|
|
MOZ_ASSERT(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
MOZ_ASSERT(aValue2.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
|
|
float v1 = aValue1.GetFloatValue() - 1.0f,
|
|
v2 = aValue2.GetFloatValue() - 1.0f;
|
|
float result = v1 * aCoeff1 + v2 * aCoeff2;
|
|
aResult.SetFloatValue(result + 1.0f, eCSSUnit_Number);
|
|
}
|
|
|
|
/* static */ already_AddRefed<nsCSSValue::Array>
|
|
StyleAnimationValue::AppendTransformFunction(nsCSSKeyword aTransformFunction,
|
|
nsCSSValueList**& aListTail)
|
|
{
|
|
RefPtr<nsCSSValue::Array> arr = AppendFunction(aTransformFunction);
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
item->mValue.SetArrayValue(arr, eCSSUnit_Function);
|
|
|
|
*aListTail = item;
|
|
aListTail = &item->mNext;
|
|
|
|
return arr.forget();
|
|
}
|
|
|
|
/*
|
|
* The relevant section of the transitions specification:
|
|
* http://dev.w3.org/csswg/css3-transitions/#animation-of-property-types-
|
|
* defers all of the details to the 2-D and 3-D transforms specifications.
|
|
* For the 2-D transforms specification (all that's relevant for us, right
|
|
* now), the relevant section is:
|
|
* http://dev.w3.org/csswg/css3-2d-transforms/#animation
|
|
* This, in turn, refers to the unmatrix program in Graphics Gems,
|
|
* available from http://tog.acm.org/resources/GraphicsGems/ , and in
|
|
* particular as the file GraphicsGems/gemsii/unmatrix.c
|
|
* in http://tog.acm.org/resources/GraphicsGems/AllGems.tar.gz
|
|
*
|
|
* The unmatrix reference is for general 3-D transform matrices (any of the
|
|
* 16 components can have any value).
|
|
*
|
|
* For CSS 2-D transforms, we have a 2-D matrix with the bottom row constant:
|
|
*
|
|
* [ A C E ]
|
|
* [ B D F ]
|
|
* [ 0 0 1 ]
|
|
*
|
|
* For that case, I believe the algorithm in unmatrix reduces to:
|
|
*
|
|
* (1) If A * D - B * C == 0, the matrix is singular. Fail.
|
|
*
|
|
* (2) Set translation components (Tx and Ty) to the translation parts of
|
|
* the matrix (E and F) and then ignore them for the rest of the time.
|
|
* (For us, E and F each actually consist of three constants: a
|
|
* length, a multiplier for the width, and a multiplier for the
|
|
* height. This actually requires its own decomposition, but I'll
|
|
* keep that separate.)
|
|
*
|
|
* (3) Let the X scale (Sx) be sqrt(A^2 + B^2). Then divide both A and B
|
|
* by it.
|
|
*
|
|
* (4) Let the XY shear (K) be A * C + B * D. From C, subtract A times
|
|
* the XY shear. From D, subtract B times the XY shear.
|
|
*
|
|
* (5) Let the Y scale (Sy) be sqrt(C^2 + D^2). Divide C, D, and the XY
|
|
* shear (K) by it.
|
|
*
|
|
* (6) At this point, A * D - B * C is either 1 or -1. If it is -1,
|
|
* negate the XY shear (K), the X scale (Sx), and A, B, C, and D.
|
|
* (Alternatively, we could negate the XY shear (K) and the Y scale
|
|
* (Sy).)
|
|
*
|
|
* (7) Let the rotation be R = atan2(B, A).
|
|
*
|
|
* Then the resulting decomposed transformation is:
|
|
*
|
|
* translate(Tx, Ty) rotate(R) skewX(atan(K)) scale(Sx, Sy)
|
|
*
|
|
* An interesting result of this is that all of the simple transform
|
|
* functions (i.e., all functions other than matrix()), in isolation,
|
|
* decompose back to themselves except for:
|
|
* 'skewY(φ)', which is 'matrix(1, tan(φ), 0, 1, 0, 0)', which decomposes
|
|
* to 'rotate(φ) skewX(φ) scale(sec(φ), cos(φ))' since (ignoring the
|
|
* alternate sign possibilities that would get fixed in step 6):
|
|
* In step 3, the X scale factor is sqrt(1+tan²(φ)) = sqrt(sec²(φ)) = sec(φ).
|
|
* Thus, after step 3, A = 1/sec(φ) = cos(φ) and B = tan(φ) / sec(φ) = sin(φ).
|
|
* In step 4, the XY shear is sin(φ).
|
|
* Thus, after step 4, C = -cos(φ)sin(φ) and D = 1 - sin²(φ) = cos²(φ).
|
|
* Thus, in step 5, the Y scale is sqrt(cos²(φ)(sin²(φ) + cos²(φ)) = cos(φ).
|
|
* Thus, after step 5, C = -sin(φ), D = cos(φ), and the XY shear is tan(φ).
|
|
* Thus, in step 6, A * D - B * C = cos²(φ) + sin²(φ) = 1.
|
|
* In step 7, the rotation is thus φ.
|
|
*
|
|
* skew(θ, φ), which is matrix(1, tan(φ), tan(θ), 1, 0, 0), which decomposes
|
|
* to 'rotate(φ) skewX(θ + φ) scale(sec(φ), cos(φ))' since (ignoring
|
|
* the alternate sign possibilities that would get fixed in step 6):
|
|
* In step 3, the X scale factor is sqrt(1+tan²(φ)) = sqrt(sec²(φ)) = sec(φ).
|
|
* Thus, after step 3, A = 1/sec(φ) = cos(φ) and B = tan(φ) / sec(φ) = sin(φ).
|
|
* In step 4, the XY shear is cos(φ)tan(θ) + sin(φ).
|
|
* Thus, after step 4,
|
|
* C = tan(θ) - cos(φ)(cos(φ)tan(θ) + sin(φ)) = tan(θ)sin²(φ) - cos(φ)sin(φ)
|
|
* D = 1 - sin(φ)(cos(φ)tan(θ) + sin(φ)) = cos²(φ) - sin(φ)cos(φ)tan(θ)
|
|
* Thus, in step 5, the Y scale is sqrt(C² + D²) =
|
|
* sqrt(tan²(θ)(sin⁴(φ) + sin²(φ)cos²(φ)) -
|
|
* 2 tan(θ)(sin³(φ)cos(φ) + sin(φ)cos³(φ)) +
|
|
* (sin²(φ)cos²(φ) + cos⁴(φ))) =
|
|
* sqrt(tan²(θ)sin²(φ) - 2 tan(θ)sin(φ)cos(φ) + cos²(φ)) =
|
|
* cos(φ) - tan(θ)sin(φ) (taking the negative of the obvious solution so
|
|
* we avoid flipping in step 6).
|
|
* After step 5, C = -sin(φ) and D = cos(φ), and the XY shear is
|
|
* (cos(φ)tan(θ) + sin(φ)) / (cos(φ) - tan(θ)sin(φ)) =
|
|
* (dividing both numerator and denominator by cos(φ))
|
|
* (tan(θ) + tan(φ)) / (1 - tan(θ)tan(φ)) = tan(θ + φ).
|
|
* (See http://en.wikipedia.org/wiki/List_of_trigonometric_identities .)
|
|
* Thus, in step 6, A * D - B * C = cos²(φ) + sin²(φ) = 1.
|
|
* In step 7, the rotation is thus φ.
|
|
*
|
|
* To check this result, we can multiply things back together:
|
|
*
|
|
* [ cos(φ) -sin(φ) ] [ 1 tan(θ + φ) ] [ sec(φ) 0 ]
|
|
* [ sin(φ) cos(φ) ] [ 0 1 ] [ 0 cos(φ) ]
|
|
*
|
|
* [ cos(φ) cos(φ)tan(θ + φ) - sin(φ) ] [ sec(φ) 0 ]
|
|
* [ sin(φ) sin(φ)tan(θ + φ) + cos(φ) ] [ 0 cos(φ) ]
|
|
*
|
|
* but since tan(θ + φ) = (tan(θ) + tan(φ)) / (1 - tan(θ)tan(φ)),
|
|
* cos(φ)tan(θ + φ) - sin(φ)
|
|
* = cos(φ)(tan(θ) + tan(φ)) - sin(φ) + sin(φ)tan(θ)tan(φ)
|
|
* = cos(φ)tan(θ) + sin(φ) - sin(φ) + sin(φ)tan(θ)tan(φ)
|
|
* = cos(φ)tan(θ) + sin(φ)tan(θ)tan(φ)
|
|
* = tan(θ) (cos(φ) + sin(φ)tan(φ))
|
|
* = tan(θ) sec(φ) (cos²(φ) + sin²(φ))
|
|
* = tan(θ) sec(φ)
|
|
* and
|
|
* sin(φ)tan(θ + φ) + cos(φ)
|
|
* = sin(φ)(tan(θ) + tan(φ)) + cos(φ) - cos(φ)tan(θ)tan(φ)
|
|
* = tan(θ) (sin(φ) - sin(φ)) + sin(φ)tan(φ) + cos(φ)
|
|
* = sec(φ) (sin²(φ) + cos²(φ))
|
|
* = sec(φ)
|
|
* so the above is:
|
|
* [ cos(φ) tan(θ) sec(φ) ] [ sec(φ) 0 ]
|
|
* [ sin(φ) sec(φ) ] [ 0 cos(φ) ]
|
|
*
|
|
* [ 1 tan(θ) ]
|
|
* [ tan(φ) 1 ]
|
|
*/
|
|
|
|
/*
|
|
* Decompose2DMatrix implements the above decomposition algorithm.
|
|
*/
|
|
|
|
#define XYSHEAR 0
|
|
#define XZSHEAR 1
|
|
#define YZSHEAR 2
|
|
|
|
static bool
|
|
Decompose2DMatrix(const Matrix &aMatrix, Point3D &aScale,
|
|
float aShear[3], gfxQuaternion &aRotate,
|
|
Point3D &aTranslate)
|
|
{
|
|
float A = aMatrix._11,
|
|
B = aMatrix._12,
|
|
C = aMatrix._21,
|
|
D = aMatrix._22;
|
|
if (A * D == B * C) {
|
|
// singular matrix
|
|
return false;
|
|
}
|
|
|
|
float scaleX = sqrt(A * A + B * B);
|
|
A /= scaleX;
|
|
B /= scaleX;
|
|
|
|
float XYshear = A * C + B * D;
|
|
C -= A * XYshear;
|
|
D -= B * XYshear;
|
|
|
|
float scaleY = sqrt(C * C + D * D);
|
|
C /= scaleY;
|
|
D /= scaleY;
|
|
XYshear /= scaleY;
|
|
|
|
// A*D - B*C should now be 1 or -1
|
|
NS_ASSERTION(0.99 < Abs(A*D - B*C) && Abs(A*D - B*C) < 1.01,
|
|
"determinant should now be 1 or -1");
|
|
if (A * D < B * C) {
|
|
A = -A;
|
|
B = -B;
|
|
C = -C;
|
|
D = -D;
|
|
XYshear = -XYshear;
|
|
scaleX = -scaleX;
|
|
}
|
|
|
|
float rotate = atan2f(B, A);
|
|
aRotate = gfxQuaternion(0, 0, sin(rotate/2), cos(rotate/2));
|
|
aShear[XYSHEAR] = XYshear;
|
|
aScale.x = scaleX;
|
|
aScale.y = scaleY;
|
|
aTranslate.x = aMatrix._31;
|
|
aTranslate.y = aMatrix._32;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Implementation of the unmatrix algorithm, specified by:
|
|
*
|
|
* http://dev.w3.org/csswg/css3-2d-transforms/#unmatrix
|
|
*
|
|
* This, in turn, refers to the unmatrix program in Graphics Gems,
|
|
* available from http://tog.acm.org/resources/GraphicsGems/ , and in
|
|
* particular as the file GraphicsGems/gemsii/unmatrix.c
|
|
* in http://tog.acm.org/resources/GraphicsGems/AllGems.tar.gz
|
|
*/
|
|
static bool
|
|
Decompose3DMatrix(const Matrix4x4 &aMatrix, Point3D &aScale,
|
|
float aShear[3], gfxQuaternion &aRotate,
|
|
Point3D &aTranslate, Point4D &aPerspective)
|
|
{
|
|
Matrix4x4 local = aMatrix;
|
|
|
|
if (local[3][3] == 0) {
|
|
return false;
|
|
}
|
|
/* Normalize the matrix */
|
|
local.Normalize();
|
|
|
|
/**
|
|
* perspective is used to solve for perspective, but it also provides
|
|
* an easy way to test for singularity of the upper 3x3 component.
|
|
*/
|
|
Matrix4x4 perspective = local;
|
|
Point4D empty(0, 0, 0, 1);
|
|
perspective.SetTransposedVector(3, empty);
|
|
|
|
if (perspective.Determinant() == 0.0) {
|
|
return false;
|
|
}
|
|
|
|
/* First, isolate perspective. */
|
|
if (local[0][3] != 0 || local[1][3] != 0 ||
|
|
local[2][3] != 0) {
|
|
/* aPerspective is the right hand side of the equation. */
|
|
aPerspective = local.TransposedVector(3);
|
|
|
|
/**
|
|
* Solve the equation by inverting perspective and multiplying
|
|
* aPerspective by the inverse.
|
|
*/
|
|
perspective.Invert();
|
|
aPerspective = perspective.TransposeTransform4D(aPerspective);
|
|
|
|
/* Clear the perspective partition */
|
|
local.SetTransposedVector(3, empty);
|
|
} else {
|
|
aPerspective = Point4D(0, 0, 0, 1);
|
|
}
|
|
|
|
/* Next take care of translation */
|
|
for (int i = 0; i < 3; i++) {
|
|
aTranslate[i] = local[3][i];
|
|
local[3][i] = 0;
|
|
}
|
|
|
|
/* Now get scale and shear. */
|
|
|
|
/* Compute X scale factor and normalize first row. */
|
|
aScale.x = local[0].Length();
|
|
local[0] /= aScale.x;
|
|
|
|
/* Compute XY shear factor and make 2nd local orthogonal to 1st. */
|
|
aShear[XYSHEAR] = local[0].DotProduct(local[1]);
|
|
local[1] -= local[0] * aShear[XYSHEAR];
|
|
|
|
/* Now, compute Y scale and normalize 2nd local. */
|
|
aScale.y = local[1].Length();
|
|
local[1] /= aScale.y;
|
|
aShear[XYSHEAR] /= aScale.y;
|
|
|
|
/* Compute XZ and YZ shears, make 3rd local orthogonal */
|
|
aShear[XZSHEAR] = local[0].DotProduct(local[2]);
|
|
local[2] -= local[0] * aShear[XZSHEAR];
|
|
aShear[YZSHEAR] = local[1].DotProduct(local[2]);
|
|
local[2] -= local[1] * aShear[YZSHEAR];
|
|
|
|
/* Next, get Z scale and normalize 3rd local. */
|
|
aScale.z = local[2].Length();
|
|
local[2] /= aScale.z;
|
|
|
|
aShear[XZSHEAR] /= aScale.z;
|
|
aShear[YZSHEAR] /= aScale.z;
|
|
|
|
/**
|
|
* At this point, the matrix (in locals) is orthonormal.
|
|
* Check for a coordinate system flip. If the determinant
|
|
* is -1, then negate the matrix and the scaling factors.
|
|
*/
|
|
if (local[0].DotProduct(local[1].CrossProduct(local[2])) < 0) {
|
|
aScale *= -1;
|
|
for (int i = 0; i < 3; i++) {
|
|
local[i] *= -1;
|
|
}
|
|
}
|
|
|
|
/* Now, get the rotations out */
|
|
aRotate = gfxQuaternion(local);
|
|
|
|
return true;
|
|
}
|
|
|
|
template<typename T>
|
|
T InterpolateNumerically(const T& aOne, const T& aTwo, double aCoeff)
|
|
{
|
|
return aOne + (aTwo - aOne) * aCoeff;
|
|
}
|
|
|
|
|
|
/* static */ Matrix4x4
|
|
StyleAnimationValue::InterpolateTransformMatrix(const Matrix4x4 &aMatrix1,
|
|
const Matrix4x4 &aMatrix2,
|
|
double aProgress)
|
|
{
|
|
// Decompose both matrices
|
|
|
|
// TODO: What do we do if one of these returns false (singular matrix)
|
|
|
|
Point3D scale1(1, 1, 1), translate1;
|
|
Point4D perspective1(0, 0, 0, 1);
|
|
gfxQuaternion rotate1;
|
|
float shear1[3] = { 0.0f, 0.0f, 0.0f};
|
|
|
|
Point3D scale2(1, 1, 1), translate2;
|
|
Point4D perspective2(0, 0, 0, 1);
|
|
gfxQuaternion rotate2;
|
|
float shear2[3] = { 0.0f, 0.0f, 0.0f};
|
|
|
|
Matrix matrix2d1, matrix2d2;
|
|
if (aMatrix1.Is2D(&matrix2d1) && aMatrix2.Is2D(&matrix2d2)) {
|
|
Decompose2DMatrix(matrix2d1, scale1, shear1, rotate1, translate1);
|
|
Decompose2DMatrix(matrix2d2, scale2, shear2, rotate2, translate2);
|
|
} else {
|
|
Decompose3DMatrix(aMatrix1, scale1, shear1,
|
|
rotate1, translate1, perspective1);
|
|
Decompose3DMatrix(aMatrix2, scale2, shear2,
|
|
rotate2, translate2, perspective2);
|
|
}
|
|
|
|
// Interpolate each of the pieces
|
|
Matrix4x4 result;
|
|
|
|
Point4D perspective =
|
|
InterpolateNumerically(perspective1, perspective2, aProgress);
|
|
result.SetTransposedVector(3, perspective);
|
|
|
|
Point3D translate =
|
|
InterpolateNumerically(translate1, translate2, aProgress);
|
|
result.PreTranslate(translate.x, translate.y, translate.z);
|
|
|
|
gfxQuaternion q3 = rotate1.Slerp(rotate2, aProgress);
|
|
Matrix4x4 rotate = q3.ToMatrix();
|
|
if (!rotate.IsIdentity()) {
|
|
result = rotate * result;
|
|
}
|
|
|
|
// TODO: Would it be better to interpolate these as angles? How do we convert back to angles?
|
|
float yzshear =
|
|
InterpolateNumerically(shear1[YZSHEAR], shear2[YZSHEAR], aProgress);
|
|
if (yzshear != 0.0) {
|
|
result.SkewYZ(yzshear);
|
|
}
|
|
|
|
float xzshear =
|
|
InterpolateNumerically(shear1[XZSHEAR], shear2[XZSHEAR], aProgress);
|
|
if (xzshear != 0.0) {
|
|
result.SkewXZ(xzshear);
|
|
}
|
|
|
|
float xyshear =
|
|
InterpolateNumerically(shear1[XYSHEAR], shear2[XYSHEAR], aProgress);
|
|
if (xyshear != 0.0) {
|
|
result.SkewXY(xyshear);
|
|
}
|
|
|
|
Point3D scale =
|
|
InterpolateNumerically(scale1, scale2, aProgress);
|
|
if (scale != Point3D(1.0, 1.0, 1.0)) {
|
|
result.PreScale(scale.x, scale.y, scale.z);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddDifferentTransformLists(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
RefPtr<nsCSSValue::Array> arr;
|
|
arr =
|
|
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_interpolatematrix,
|
|
resultTail);
|
|
|
|
// FIXME: We should change the other transform code to also only
|
|
// take a single progress value, as having values that don't
|
|
// sum to 1 doesn't make sense for these.
|
|
if (aList1 == aList2) {
|
|
arr->Item(1).Reset();
|
|
} else {
|
|
aList1->CloneInto(arr->Item(1).SetListValue());
|
|
}
|
|
|
|
aList2->CloneInto(arr->Item(2).SetListValue());
|
|
arr->Item(3).SetPercentValue(aCoeff2);
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static bool
|
|
TransformFunctionsMatch(nsCSSKeyword func1, nsCSSKeyword func2)
|
|
{
|
|
return ToPrimitive(func1) == ToPrimitive(func2);
|
|
}
|
|
|
|
static bool
|
|
AddFilterFunctionImpl(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
nsCSSValueList**& aResultTail)
|
|
{
|
|
// AddFilterFunction should be our only caller, and it should ensure that both
|
|
// args are non-null.
|
|
MOZ_ASSERT(aList1, "expected filter list");
|
|
MOZ_ASSERT(aList2, "expected filter list");
|
|
MOZ_ASSERT(aList1->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
MOZ_ASSERT(aList2->mValue.GetUnit() == eCSSUnit_Function,
|
|
"expected function");
|
|
RefPtr<nsCSSValue::Array> a1 = aList1->mValue.GetArrayValue(),
|
|
a2 = aList2->mValue.GetArrayValue();
|
|
nsCSSKeyword filterFunction = a1->Item(0).GetKeywordValue();
|
|
if (filterFunction != a2->Item(0).GetKeywordValue())
|
|
return false; // Can't add two filters of different types.
|
|
|
|
nsAutoPtr<nsCSSValueList> resultListEntry(new nsCSSValueList);
|
|
nsCSSValue::Array* result =
|
|
resultListEntry->mValue.InitFunction(filterFunction, 1);
|
|
|
|
// "hue-rotate" is the only filter-function that accepts negative values, and
|
|
// we don't use this "restrictions" variable in its clause below.
|
|
const uint32_t restrictions = CSS_PROPERTY_VALUE_NONNEGATIVE;
|
|
const nsCSSValue& funcArg1 = a1->Item(1);
|
|
const nsCSSValue& funcArg2 = a2->Item(1);
|
|
nsCSSValue& resultArg = result->Item(1);
|
|
float initialVal = 1.0f;
|
|
switch (filterFunction) {
|
|
case eCSSKeyword_blur: {
|
|
nsCSSUnit unit;
|
|
if (funcArg1.GetUnit() == funcArg2.GetUnit()) {
|
|
unit = funcArg1.GetUnit();
|
|
} else {
|
|
// If units differ, we'll just combine them with calc().
|
|
unit = eCSSUnit_Calc;
|
|
}
|
|
if (!AddCSSValuePixelPercentCalc(restrictions,
|
|
unit,
|
|
aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg)) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
case eCSSKeyword_grayscale:
|
|
case eCSSKeyword_invert:
|
|
case eCSSKeyword_sepia:
|
|
initialVal = 0.0f;
|
|
case eCSSKeyword_brightness:
|
|
case eCSSKeyword_contrast:
|
|
case eCSSKeyword_opacity:
|
|
case eCSSKeyword_saturate:
|
|
AddCSSValuePercentNumber(restrictions,
|
|
aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg,
|
|
initialVal);
|
|
break;
|
|
case eCSSKeyword_hue_rotate:
|
|
AddCSSValueAngle(aCoeff1, funcArg1,
|
|
aCoeff2, funcArg2,
|
|
resultArg);
|
|
break;
|
|
case eCSSKeyword_drop_shadow: {
|
|
nsCSSValueList* resultShadow = resultArg.SetListValue();
|
|
nsAutoPtr<nsCSSValueList> shadowValue;
|
|
nsCSSValueList **shadowTail = getter_Transfers(shadowValue);
|
|
MOZ_ASSERT(!funcArg1.GetListValue()->mNext &&
|
|
!funcArg2.GetListValue()->mNext,
|
|
"drop-shadow filter func doesn't support lists");
|
|
if (!AddShadowItems(aCoeff1, funcArg1.GetListValue()->mValue,
|
|
aCoeff2, funcArg2.GetListValue()->mValue,
|
|
shadowTail)) {
|
|
return false;
|
|
}
|
|
*resultShadow = *shadowValue;
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(false, "unknown filter function");
|
|
return false;
|
|
}
|
|
|
|
*aResultTail = resultListEntry.forget();
|
|
aResultTail = &(*aResultTail)->mNext;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
AddFilterFunction(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2,
|
|
nsCSSValueList**& aResultTail)
|
|
{
|
|
MOZ_ASSERT(aList1 || aList2,
|
|
"one function list item must not be null");
|
|
// Note that one of our arguments could be null, indicating that
|
|
// it's the initial value. Rather than adding special null-handling
|
|
// logic, we just check for null values and replace them with
|
|
// 0 * the other value. That way, AddFilterFunctionImpl can assume
|
|
// its args are non-null.
|
|
if (!aList1) {
|
|
return AddFilterFunctionImpl(aCoeff2, aList2, 0, aList2, aResultTail);
|
|
}
|
|
if (!aList2) {
|
|
return AddFilterFunctionImpl(aCoeff1, aList1, 0, aList1, aResultTail);
|
|
}
|
|
|
|
return AddFilterFunctionImpl(aCoeff1, aList1, aCoeff2, aList2, aResultTail);
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddTransformLists(double aCoeff1, const nsCSSValueList* aList1,
|
|
double aCoeff2, const nsCSSValueList* aList2)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
do {
|
|
RefPtr<nsCSSValue::Array> a1 = ToPrimitive(aList1->mValue.GetArrayValue()),
|
|
a2 = ToPrimitive(aList2->mValue.GetArrayValue());
|
|
MOZ_ASSERT(
|
|
TransformFunctionsMatch(nsStyleTransformMatrix::TransformFunctionOf(a1),
|
|
nsStyleTransformMatrix::TransformFunctionOf(a2)),
|
|
"transform function mismatch");
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail (may leak)");
|
|
|
|
nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(a1);
|
|
RefPtr<nsCSSValue::Array> arr;
|
|
if (tfunc != eCSSKeyword_matrix &&
|
|
tfunc != eCSSKeyword_matrix3d &&
|
|
tfunc != eCSSKeyword_interpolatematrix &&
|
|
tfunc != eCSSKeyword_rotate3d &&
|
|
tfunc != eCSSKeyword_perspective) {
|
|
arr = StyleAnimationValue::AppendTransformFunction(tfunc, resultTail);
|
|
}
|
|
|
|
switch (tfunc) {
|
|
case eCSSKeyword_translate3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
AddTransformTranslate(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
AddTransformTranslate(aCoeff1, a1->Item(2), aCoeff2, a2->Item(2),
|
|
arr->Item(2));
|
|
AddTransformTranslate(aCoeff1, a1->Item(3), aCoeff2, a2->Item(3),
|
|
arr->Item(3));
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale3d: {
|
|
MOZ_ASSERT(a1->Count() == 4, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 4, "unexpected count");
|
|
|
|
AddTransformScale(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
AddTransformScale(aCoeff1, a1->Item(2), aCoeff2, a2->Item(2),
|
|
arr->Item(2));
|
|
AddTransformScale(aCoeff1, a1->Item(3), aCoeff2, a2->Item(3),
|
|
arr->Item(3));
|
|
|
|
break;
|
|
}
|
|
// It would probably be nicer to animate skew in tangent space
|
|
// rather than angle space. However, it's easy to specify
|
|
// skews with infinite tangents, and behavior changes pretty
|
|
// drastically when crossing such skews (since the direction of
|
|
// animation flips), so interop is probably more important here.
|
|
case eCSSKeyword_skew: {
|
|
MOZ_ASSERT(a1->Count() == 2 || a1->Count() == 3,
|
|
"unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2 || a2->Count() == 3,
|
|
"unexpected count");
|
|
|
|
nsCSSValue zero(0.0f, eCSSUnit_Radian);
|
|
// Add Y component of skew.
|
|
AddCSSValueAngle(aCoeff1,
|
|
a1->Count() == 3 ? a1->Item(2) : zero,
|
|
aCoeff2,
|
|
a2->Count() == 3 ? a2->Item(2) : zero,
|
|
arr->Item(2));
|
|
|
|
// Add X component of skew (which can be merged with case below
|
|
// in non-DEBUG).
|
|
AddCSSValueAngle(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_skewx:
|
|
case eCSSKeyword_skewy:
|
|
case eCSSKeyword_rotate:
|
|
case eCSSKeyword_rotatex:
|
|
case eCSSKeyword_rotatey:
|
|
case eCSSKeyword_rotatez: {
|
|
MOZ_ASSERT(a1->Count() == 2, "unexpected count");
|
|
MOZ_ASSERT(a2->Count() == 2, "unexpected count");
|
|
|
|
AddCSSValueAngle(aCoeff1, a1->Item(1), aCoeff2, a2->Item(1),
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_rotate3d: {
|
|
Point3D vector1(a1->Item(1).GetFloatValue(),
|
|
a1->Item(2).GetFloatValue(),
|
|
a1->Item(3).GetFloatValue());
|
|
vector1.Normalize();
|
|
Point3D vector2(a2->Item(1).GetFloatValue(),
|
|
a2->Item(2).GetFloatValue(),
|
|
a2->Item(3).GetFloatValue());
|
|
vector2.Normalize();
|
|
|
|
// Handle rotate3d with matched (normalized) vectors,
|
|
// otherwise fallthrough to the next switch statement
|
|
// and do matrix decomposition.
|
|
if (vector1 == vector2) {
|
|
// We skipped appending a transform function above for rotate3d,
|
|
// so do it now.
|
|
arr = StyleAnimationValue::AppendTransformFunction(tfunc, resultTail);
|
|
arr->Item(1).SetFloatValue(vector1.x, eCSSUnit_Number);
|
|
arr->Item(2).SetFloatValue(vector1.y, eCSSUnit_Number);
|
|
arr->Item(3).SetFloatValue(vector1.z, eCSSUnit_Number);
|
|
|
|
AddCSSValueAngle(aCoeff1, a1->Item(4), aCoeff2, a2->Item(4),
|
|
arr->Item(4));
|
|
break;
|
|
}
|
|
// FALL THROUGH
|
|
}
|
|
case eCSSKeyword_matrix:
|
|
case eCSSKeyword_matrix3d:
|
|
case eCSSKeyword_interpolatematrix:
|
|
case eCSSKeyword_perspective: {
|
|
// FIXME: If the matrix contains only numbers then we could decompose
|
|
// here.
|
|
|
|
// Construct temporary lists with only this item in them.
|
|
nsCSSValueList tempList1, tempList2;
|
|
tempList1.mValue = aList1->mValue;
|
|
tempList2.mValue = aList2->mValue;
|
|
|
|
if (aList1 == aList2) {
|
|
*resultTail =
|
|
AddDifferentTransformLists(aCoeff1, &tempList1, aCoeff2, &tempList1);
|
|
} else {
|
|
*resultTail =
|
|
AddDifferentTransformLists(aCoeff1, &tempList1, aCoeff2, &tempList2);
|
|
}
|
|
|
|
// Now advance resultTail to point to the new tail slot.
|
|
while (*resultTail) {
|
|
resultTail = &(*resultTail)->mNext;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
MOZ_ASSERT(false, "unknown transform function");
|
|
}
|
|
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
} while (aList1);
|
|
MOZ_ASSERT(!aList2, "list length mismatch");
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail");
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static void
|
|
AddPositions(double aCoeff1, const nsCSSValue& aPos1,
|
|
double aCoeff2, const nsCSSValue& aPos2,
|
|
nsCSSValue& aResultPos)
|
|
{
|
|
const nsCSSValue::Array* posArray1 = aPos1.GetArrayValue();
|
|
const nsCSSValue::Array* posArray2 = aPos2.GetArrayValue();
|
|
nsCSSValue::Array* resultPosArray = nsCSSValue::Array::Create(4);
|
|
aResultPos.SetArrayValue(resultPosArray, eCSSUnit_Array);
|
|
|
|
/* Only iterate over elements 1 and 3. The <position> is
|
|
* 'uncomputed' to only those elements.
|
|
*/
|
|
for (size_t i = 1; i < 4; i += 2) {
|
|
const nsCSSValue& v1 = posArray1->Item(i);
|
|
const nsCSSValue& v2 = posArray2->Item(i);
|
|
nsCSSValue& vr = resultPosArray->Item(i);
|
|
AddCSSValueCanonicalCalc(aCoeff1, v1,
|
|
aCoeff2, v2, vr);
|
|
}
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::AddWeighted(nsCSSProperty aProperty,
|
|
double aCoeff1,
|
|
const StyleAnimationValue& aValue1,
|
|
double aCoeff2,
|
|
const StyleAnimationValue& aValue2,
|
|
StyleAnimationValue& aResultValue)
|
|
{
|
|
Unit commonUnit =
|
|
GetCommonUnit(aProperty, aValue1.GetUnit(), aValue2.GetUnit());
|
|
// Maybe need a followup method to convert the inputs into the common
|
|
// unit-type, if they don't already match it. (Or would it make sense to do
|
|
// that in GetCommonUnit? in which case maybe ConvertToCommonUnit would be
|
|
// better.)
|
|
|
|
switch (commonUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
case eUnit_Normal:
|
|
case eUnit_UnparsedString:
|
|
return false;
|
|
|
|
case eUnit_Enumerated:
|
|
switch (aProperty) {
|
|
case eCSSProperty_font_stretch: {
|
|
// Animate just like eUnit_Integer.
|
|
int32_t result = floor(aCoeff1 * double(aValue1.GetIntValue()) +
|
|
aCoeff2 * double(aValue2.GetIntValue()));
|
|
if (result < NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED) {
|
|
result = NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED;
|
|
} else if (result > NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED) {
|
|
result = NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED;
|
|
}
|
|
aResultValue.SetIntValue(result, eUnit_Enumerated);
|
|
return true;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
case eUnit_Visibility: {
|
|
int32_t enum1 = aValue1.GetIntValue();
|
|
int32_t enum2 = aValue2.GetIntValue();
|
|
if (enum1 == enum2) {
|
|
aResultValue.SetIntValue(enum1, eUnit_Visibility);
|
|
return true;
|
|
}
|
|
if ((enum1 == NS_STYLE_VISIBILITY_VISIBLE) ==
|
|
(enum2 == NS_STYLE_VISIBILITY_VISIBLE)) {
|
|
return false;
|
|
}
|
|
int32_t val1 = enum1 == NS_STYLE_VISIBILITY_VISIBLE;
|
|
int32_t val2 = enum2 == NS_STYLE_VISIBILITY_VISIBLE;
|
|
double interp = aCoeff1 * val1 + aCoeff2 * val2;
|
|
int32_t result = interp > 0.0 ? NS_STYLE_VISIBILITY_VISIBLE
|
|
: (val1 ? enum2 : enum1);
|
|
aResultValue.SetIntValue(result, eUnit_Visibility);
|
|
return true;
|
|
}
|
|
case eUnit_Integer: {
|
|
// http://dev.w3.org/csswg/css3-transitions/#animation-of-property-types-
|
|
// says we should use floor
|
|
int32_t result = floor(aCoeff1 * double(aValue1.GetIntValue()) +
|
|
aCoeff2 * double(aValue2.GetIntValue()));
|
|
if (aProperty == eCSSProperty_font_weight) {
|
|
if (result < 100) {
|
|
result = 100;
|
|
} else if (result > 900) {
|
|
result = 900;
|
|
}
|
|
result -= result % 100;
|
|
} else {
|
|
result = RestrictValue(aProperty, result);
|
|
}
|
|
aResultValue.SetIntValue(result, eUnit_Integer);
|
|
return true;
|
|
}
|
|
case eUnit_Coord: {
|
|
aResultValue.SetCoordValue(RestrictValue(aProperty, NSToCoordRound(
|
|
aCoeff1 * aValue1.GetCoordValue() +
|
|
aCoeff2 * aValue2.GetCoordValue())));
|
|
return true;
|
|
}
|
|
case eUnit_Percent: {
|
|
aResultValue.SetPercentValue(RestrictValue(aProperty,
|
|
aCoeff1 * aValue1.GetPercentValue() +
|
|
aCoeff2 * aValue2.GetPercentValue()));
|
|
return true;
|
|
}
|
|
case eUnit_Float: {
|
|
aResultValue.SetFloatValue(RestrictValue(aProperty,
|
|
aCoeff1 * aValue1.GetFloatValue() +
|
|
aCoeff2 * aValue2.GetFloatValue()));
|
|
return true;
|
|
}
|
|
case eUnit_Color: {
|
|
nscolor color1 = aValue1.GetColorValue();
|
|
nscolor color2 = aValue2.GetColorValue();
|
|
// FIXME (spec): The CSS transitions spec doesn't say whether
|
|
// colors are premultiplied, but things work better when they are,
|
|
// so use premultiplication. Spec issue is still open per
|
|
// http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
|
|
|
|
// To save some math, scale the alpha down to a 0-1 scale, but
|
|
// leave the color components on a 0-255 scale.
|
|
double A1 = NS_GET_A(color1) * (1.0 / 255.0);
|
|
double R1 = NS_GET_R(color1) * A1;
|
|
double G1 = NS_GET_G(color1) * A1;
|
|
double B1 = NS_GET_B(color1) * A1;
|
|
double A2 = NS_GET_A(color2) * (1.0 / 255.0);
|
|
double R2 = NS_GET_R(color2) * A2;
|
|
double G2 = NS_GET_G(color2) * A2;
|
|
double B2 = NS_GET_B(color2) * A2;
|
|
double Aresf = (A1 * aCoeff1 + A2 * aCoeff2);
|
|
nscolor resultColor;
|
|
if (Aresf <= 0.0) {
|
|
resultColor = NS_RGBA(0, 0, 0, 0);
|
|
} else {
|
|
if (Aresf > 1.0) {
|
|
Aresf = 1.0;
|
|
}
|
|
double factor = 1.0 / Aresf;
|
|
uint8_t Ares = NSToIntRound(Aresf * 255.0);
|
|
uint8_t Rres = ClampColor((R1 * aCoeff1 + R2 * aCoeff2) * factor);
|
|
uint8_t Gres = ClampColor((G1 * aCoeff1 + G2 * aCoeff2) * factor);
|
|
uint8_t Bres = ClampColor((B1 * aCoeff1 + B2 * aCoeff2) * factor);
|
|
resultColor = NS_RGBA(Rres, Gres, Bres, Ares);
|
|
}
|
|
aResultValue.SetColorValue(resultColor);
|
|
return true;
|
|
}
|
|
case eUnit_Calc: {
|
|
PixelCalcValue v1 = ExtractCalcValue(aValue1);
|
|
PixelCalcValue v2 = ExtractCalcValue(aValue2);
|
|
double len = aCoeff1 * v1.mLength + aCoeff2 * v2.mLength;
|
|
double pct = aCoeff1 * v1.mPercent + aCoeff2 * v2.mPercent;
|
|
bool hasPct = (aCoeff1 != 0.0 && v1.mHasPercent) ||
|
|
(aCoeff2 != 0.0 && v2.mHasPercent);
|
|
nsCSSValue *val = new nsCSSValue();
|
|
nsCSSValue::Array *arr = nsCSSValue::Array::Create(1);
|
|
val->SetArrayValue(arr, eCSSUnit_Calc);
|
|
if (hasPct) {
|
|
nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
|
|
arr2->Item(0).SetFloatValue(len, eCSSUnit_Pixel);
|
|
arr2->Item(1).SetPercentValue(pct);
|
|
arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
|
|
} else {
|
|
arr->Item(0).SetFloatValue(len, eCSSUnit_Pixel);
|
|
}
|
|
aResultValue.SetAndAdoptCSSValueValue(val, eUnit_Calc);
|
|
return true;
|
|
}
|
|
case eUnit_ObjectPosition: {
|
|
const nsCSSValue* position1 = aValue1.GetCSSValueValue();
|
|
const nsCSSValue* position2 = aValue2.GetCSSValueValue();
|
|
|
|
nsAutoPtr<nsCSSValue> result(new nsCSSValue);
|
|
AddPositions(aCoeff1, *position1,
|
|
aCoeff2, *position2, *result);
|
|
|
|
aResultValue.SetAndAdoptCSSValueValue(result.forget(),
|
|
eUnit_ObjectPosition);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
const nsCSSValuePair *pair1 = aValue1.GetCSSValuePairValue();
|
|
const nsCSSValuePair *pair2 = aValue2.GetCSSValuePairValue();
|
|
nsCSSUnit unit[2];
|
|
unit[0] = GetCommonUnit(aProperty, pair1->mXValue.GetUnit(),
|
|
pair2->mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, pair1->mYValue.GetUnit(),
|
|
pair2->mYValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[0] == eCSSUnit_URL || unit[0] == eCSSUnit_Enumerated) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValuePair> result(new nsCSSValuePair);
|
|
static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
|
|
&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
|
|
};
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (uint32_t i = 0; i < 2; ++i) {
|
|
nsCSSValue nsCSSValuePair::*member = pairValues[i];
|
|
if (!AddCSSValuePixelPercentCalc(restrictions, unit[i],
|
|
aCoeff1, pair1->*member,
|
|
aCoeff2, pair2->*member,
|
|
result->*member) ) {
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValuePairValue(result.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValueTriplet: {
|
|
nsCSSValueTriplet triplet1(*aValue1.GetCSSValueTripletValue());
|
|
nsCSSValueTriplet triplet2(*aValue2.GetCSSValueTripletValue());
|
|
|
|
nsCSSUnit unit[3];
|
|
unit[0] = GetCommonUnit(aProperty, triplet1.mXValue.GetUnit(),
|
|
triplet2.mXValue.GetUnit());
|
|
unit[1] = GetCommonUnit(aProperty, triplet1.mYValue.GetUnit(),
|
|
triplet2.mYValue.GetUnit());
|
|
unit[2] = GetCommonUnit(aProperty, triplet1.mZValue.GetUnit(),
|
|
triplet2.mZValue.GetUnit());
|
|
if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
|
|
unit[2] == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValueTriplet> result(new nsCSSValueTriplet);
|
|
static nsCSSValue nsCSSValueTriplet::* const tripletValues[3] = {
|
|
&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
|
|
};
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (uint32_t i = 0; i < 3; ++i) {
|
|
nsCSSValue nsCSSValueTriplet::*member = tripletValues[i];
|
|
if (!AddCSSValuePixelPercentCalc(restrictions, unit[i],
|
|
aCoeff1, &triplet1->*member,
|
|
aCoeff2, &triplet2->*member,
|
|
result->*member) ) {
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueTripletValue(result.forget(),
|
|
eUnit_CSSValueTriplet);
|
|
return true;
|
|
}
|
|
case eUnit_CSSRect: {
|
|
MOZ_ASSERT(nsCSSProps::ValueRestrictions(aProperty) == 0,
|
|
"must add code for handling value restrictions");
|
|
const nsCSSRect *rect1 = aValue1.GetCSSRectValue();
|
|
const nsCSSRect *rect2 = aValue2.GetCSSRectValue();
|
|
if (rect1->mTop.GetUnit() != rect2->mTop.GetUnit() ||
|
|
rect1->mRight.GetUnit() != rect2->mRight.GetUnit() ||
|
|
rect1->mBottom.GetUnit() != rect2->mBottom.GetUnit() ||
|
|
rect1->mLeft.GetUnit() != rect2->mLeft.GetUnit()) {
|
|
// At least until we have calc()
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSRect> result(new nsCSSRect);
|
|
for (uint32_t i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
MOZ_ASSERT((rect1->*member).GetUnit() == (rect2->*member).GetUnit(),
|
|
"should have returned above");
|
|
switch ((rect1->*member).GetUnit()) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, rect1->*member, aCoeff2, rect2->*member,
|
|
result->*member);
|
|
break;
|
|
case eCSSUnit_Auto:
|
|
if (float(aCoeff1 + aCoeff2) != 1.0f) {
|
|
// Interpolating between two auto values makes sense;
|
|
// adding in other ratios does not.
|
|
return false;
|
|
}
|
|
(result->*member).SetAutoValue();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSRectValue(result.forget(), eUnit_CSSRect);
|
|
return true;
|
|
}
|
|
case eUnit_Dasharray: {
|
|
const nsCSSValueList *list1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = aValue2.GetCSSValueListValue();
|
|
|
|
uint32_t len1 = 0, len2 = 0;
|
|
for (const nsCSSValueList *v = list1; v; v = v->mNext) {
|
|
++len1;
|
|
}
|
|
for (const nsCSSValueList *v = list2; v; v = v->mNext) {
|
|
++len2;
|
|
}
|
|
MOZ_ASSERT(len1 > 0 && len2 > 0, "unexpected length");
|
|
if (list1->mValue.GetUnit() == eCSSUnit_None ||
|
|
list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
// One of our values is "none". Can't do addition with that.
|
|
MOZ_ASSERT(
|
|
(list1->mValue.GetUnit() != eCSSUnit_None || len1 == 1) &&
|
|
(list2->mValue.GetUnit() != eCSSUnit_None || len2 == 1),
|
|
"multi-value valuelist with 'none' as first element");
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = EuclidLCM<uint32_t>(len1, len2); i != i_end; ++i) {
|
|
const nsCSSValue &v1 = list1->mValue;
|
|
const nsCSSValue &v2 = list2->mValue;
|
|
MOZ_ASSERT(v1.GetUnit() == eCSSUnit_Number ||
|
|
v1.GetUnit() == eCSSUnit_Percent, "unexpected");
|
|
MOZ_ASSERT(v2.GetUnit() == eCSSUnit_Number ||
|
|
v2.GetUnit() == eCSSUnit_Percent, "unexpected");
|
|
if (v1.GetUnit() != v2.GetUnit()) {
|
|
// Can't animate between lengths and percentages (until calc()).
|
|
return false;
|
|
}
|
|
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
if (v1.GetUnit() == eCSSUnit_Number) {
|
|
AddCSSValueNumber(aCoeff1, v1, aCoeff2, v2, item->mValue,
|
|
CSS_PROPERTY_VALUE_NONNEGATIVE);
|
|
} else {
|
|
AddCSSValuePercent(aCoeff1, v1, aCoeff2, v2, item->mValue,
|
|
CSS_PROPERTY_VALUE_NONNEGATIVE);
|
|
}
|
|
|
|
list1 = list1->mNext;
|
|
if (!list1) {
|
|
list1 = aValue1.GetCSSValueListValue();
|
|
}
|
|
list2 = list2->mNext;
|
|
if (!list2) {
|
|
list2 = aValue2.GetCSSValueListValue();
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Dasharray);
|
|
return true;
|
|
}
|
|
case eUnit_Shadow: {
|
|
// This is implemented according to:
|
|
// http://dev.w3.org/csswg/css3-transitions/#animation-of-property-types-
|
|
// and the third item in the summary of:
|
|
// http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
|
|
const nsCSSValueList *shadow1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *shadow2 = aValue2.GetCSSValueListValue();
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
while (shadow1 && shadow2) {
|
|
if (!AddShadowItems(aCoeff1, shadow1->mValue,
|
|
aCoeff2, shadow2->mValue,
|
|
resultTail)) {
|
|
return false;
|
|
}
|
|
shadow1 = shadow1->mNext;
|
|
shadow2 = shadow2->mNext;
|
|
}
|
|
if (shadow1 || shadow2) {
|
|
const nsCSSValueList *longShadow;
|
|
double longCoeff;
|
|
if (shadow1) {
|
|
longShadow = shadow1;
|
|
longCoeff = aCoeff1;
|
|
} else {
|
|
longShadow = shadow2;
|
|
longCoeff = aCoeff2;
|
|
}
|
|
|
|
while (longShadow) {
|
|
// Passing coefficients that add to less than 1 produces the
|
|
// desired result of interpolating "0 0 0 transparent" with
|
|
// the current shadow.
|
|
if (!AddShadowItems(longCoeff, longShadow->mValue,
|
|
0.0, longShadow->mValue,
|
|
resultTail)) {
|
|
return false;
|
|
}
|
|
|
|
longShadow = longShadow->mNext;
|
|
}
|
|
}
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(), eUnit_Shadow);
|
|
return true;
|
|
}
|
|
|
|
case eUnit_Filter: {
|
|
const nsCSSValueList *list1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = aValue2.GetCSSValueListValue();
|
|
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
while (list1 || list2) {
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail (may leak)");
|
|
if ((list1 && list1->mValue.GetUnit() != eCSSUnit_Function) ||
|
|
(list2 && list2->mValue.GetUnit() != eCSSUnit_Function)) {
|
|
// If we don't have filter-functions, we must have filter-URLs, which
|
|
// we can't add or interpolate.
|
|
return false;
|
|
}
|
|
|
|
if (!AddFilterFunction(aCoeff1, list1, aCoeff2, list2, resultTail)) {
|
|
// filter function mismatch
|
|
return false;
|
|
}
|
|
|
|
// move to next list items
|
|
if (list1) {
|
|
list1 = list1->mNext;
|
|
}
|
|
if (list2) {
|
|
list2 = list2->mNext;
|
|
}
|
|
}
|
|
MOZ_ASSERT(!*resultTail,
|
|
"resultTail isn't pointing to the tail (may leak)");
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Filter);
|
|
return true;
|
|
}
|
|
|
|
case eUnit_Transform: {
|
|
const nsCSSValueList* list1 = aValue1.GetCSSValueSharedListValue()->mHead;
|
|
const nsCSSValueList* list2 = aValue2.GetCSSValueSharedListValue()->mHead;
|
|
|
|
MOZ_ASSERT(list1);
|
|
MOZ_ASSERT(list2);
|
|
|
|
// We want to avoid the matrix decomposition when we can, since
|
|
// avoiding it can produce better results both for compound
|
|
// transforms and for skew and skewY (see below). We can do this
|
|
// in two cases:
|
|
// (1) if one of the transforms is 'none'
|
|
// (2) if the lists have the same length and the transform
|
|
// functions match
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (list1->mValue.GetUnit() == eCSSUnit_None) {
|
|
if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
result = new nsCSSValueList;
|
|
if (result) {
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
} else {
|
|
result = AddTransformLists(0, list2, aCoeff2, list2);
|
|
}
|
|
} else {
|
|
if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
result = AddTransformLists(0, list1, aCoeff1, list1);
|
|
} else {
|
|
bool match = true;
|
|
|
|
{
|
|
const nsCSSValueList *item1 = list1, *item2 = list2;
|
|
do {
|
|
nsCSSKeyword func1 = nsStyleTransformMatrix::TransformFunctionOf(
|
|
item1->mValue.GetArrayValue());
|
|
nsCSSKeyword func2 = nsStyleTransformMatrix::TransformFunctionOf(
|
|
item2->mValue.GetArrayValue());
|
|
|
|
if (!TransformFunctionsMatch(func1, func2)) {
|
|
break;
|
|
}
|
|
|
|
item1 = item1->mNext;
|
|
item2 = item2->mNext;
|
|
} while (item1 && item2);
|
|
if (item1 || item2) {
|
|
// Either |break| above or length mismatch.
|
|
match = false;
|
|
}
|
|
}
|
|
|
|
if (match) {
|
|
result = AddTransformLists(aCoeff1, list1, aCoeff2, list2);
|
|
} else {
|
|
result = AddDifferentTransformLists(aCoeff1, list1, aCoeff2, list2);
|
|
}
|
|
}
|
|
}
|
|
|
|
aResultValue.SetTransformValue(new nsCSSValueSharedList(result.forget()));
|
|
return true;
|
|
}
|
|
case eUnit_BackgroundPosition: {
|
|
const nsCSSValueList *position1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *position2 = aValue2.GetCSSValueListValue();
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
while (position1 && position2) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
AddPositions(aCoeff1, position1->mValue,
|
|
aCoeff2, position2->mValue, item->mValue);
|
|
|
|
position1 = position1->mNext;
|
|
position2 = position2->mNext;
|
|
}
|
|
|
|
// Check for different lengths
|
|
if (position1 || position2) {
|
|
return false;
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_BackgroundPosition);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValuePairList: {
|
|
const nsCSSValuePairList *list1 = aValue1.GetCSSValuePairListValue();
|
|
const nsCSSValuePairList *list2 = aValue2.GetCSSValuePairListValue();
|
|
nsAutoPtr<nsCSSValuePairList> result;
|
|
nsCSSValuePairList **resultTail = getter_Transfers(result);
|
|
do {
|
|
nsCSSValuePairList *item = new nsCSSValuePairList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
static nsCSSValue nsCSSValuePairList::* const pairListValues[] = {
|
|
&nsCSSValuePairList::mXValue,
|
|
&nsCSSValuePairList::mYValue,
|
|
};
|
|
uint32_t restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (uint32_t i = 0; i < ArrayLength(pairListValues); ++i) {
|
|
const nsCSSValue &v1 = list1->*(pairListValues[i]);
|
|
const nsCSSValue &v2 = list2->*(pairListValues[i]);
|
|
nsCSSValue &vr = item->*(pairListValues[i]);
|
|
nsCSSUnit unit =
|
|
GetCommonUnit(aProperty, v1.GetUnit(), v2.GetUnit());
|
|
if (unit == eCSSUnit_Null) {
|
|
return false;
|
|
}
|
|
if (!AddCSSValuePixelPercentCalc(restrictions, unit, aCoeff1, v1,
|
|
aCoeff2, v2, vr) ) {
|
|
if (v1 != v2) {
|
|
return false;
|
|
}
|
|
vr = v1;
|
|
}
|
|
}
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
} while (list1 && list2);
|
|
if (list1 || list2) {
|
|
// We can't interpolate lists of different lengths.
|
|
return false;
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValuePairListValue(result.forget());
|
|
return true;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(false, "Can't interpolate using the given common unit");
|
|
return false;
|
|
}
|
|
|
|
already_AddRefed<css::StyleRule>
|
|
BuildStyleRule(nsCSSProperty aProperty,
|
|
dom::Element* aTargetElement,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode)
|
|
{
|
|
// Set up an empty CSS Declaration
|
|
RefPtr<css::Declaration> declaration(new css::Declaration());
|
|
declaration->InitializeEmpty();
|
|
|
|
bool changed; // ignored, but needed as outparam for ParseProperty
|
|
nsIDocument* doc = aTargetElement->OwnerDoc();
|
|
nsCOMPtr<nsIURI> baseURI = aTargetElement->GetBaseURI();
|
|
nsCSSParser parser(doc->CSSLoader());
|
|
|
|
nsCSSProperty propertyToCheck = nsCSSProps::IsShorthand(aProperty) ?
|
|
nsCSSProps::SubpropertyEntryFor(aProperty)[0] : aProperty;
|
|
|
|
// Get a parser, parse the property, and check for CSS parsing errors.
|
|
// If this fails, we bail out and delete the declaration.
|
|
parser.ParseProperty(aProperty, aSpecifiedValue, doc->GetDocumentURI(),
|
|
baseURI, aTargetElement->NodePrincipal(), declaration,
|
|
&changed, false, aUseSVGMode);
|
|
|
|
// check whether property parsed without CSS parsing errors
|
|
if (!declaration->HasNonImportantValueFor(propertyToCheck)) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<css::StyleRule> rule = new css::StyleRule(nullptr,
|
|
declaration,
|
|
0, 0);
|
|
return rule.forget();
|
|
}
|
|
|
|
inline
|
|
already_AddRefed<nsStyleContext>
|
|
LookupStyleContext(dom::Element* aElement)
|
|
{
|
|
nsIDocument* doc = aElement->GetCurrentDoc();
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (!shell) {
|
|
return nullptr;
|
|
}
|
|
return nsComputedDOMStyle::GetStyleContextForElement(aElement, nullptr, shell);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValue(nsCSSProperty aProperty,
|
|
dom::Element* aTargetElement,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
StyleAnimationValue& aComputedValue,
|
|
bool* aIsContextSensitive)
|
|
{
|
|
MOZ_ASSERT(aTargetElement, "null target element");
|
|
MOZ_ASSERT(aTargetElement->GetCurrentDoc(),
|
|
"we should only be able to actively animate nodes that "
|
|
"are in a document");
|
|
|
|
// Parse specified value into a temporary css::StyleRule
|
|
RefPtr<css::StyleRule> styleRule =
|
|
BuildStyleRule(aProperty, aTargetElement, aSpecifiedValue, aUseSVGMode);
|
|
if (!styleRule) {
|
|
return false;
|
|
}
|
|
|
|
if (nsCSSProps::IsShorthand(aProperty) ||
|
|
nsCSSProps::kAnimTypeTable[aProperty] == eStyleAnimType_None) {
|
|
// Just capture the specified value
|
|
aComputedValue.SetUnparsedStringValue(nsString(aSpecifiedValue));
|
|
if (aIsContextSensitive) {
|
|
// Since we're just returning the string as-is, aComputedValue isn't going
|
|
// to change depending on the context
|
|
*aIsContextSensitive = false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsAutoTArray<PropertyStyleAnimationValuePair,1> values;
|
|
bool ok = ComputeValues(aProperty, nsCSSProps::eIgnoreEnabledState,
|
|
aTargetElement, styleRule, values,
|
|
aIsContextSensitive);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(values.Length() == 1);
|
|
MOZ_ASSERT(values[0].mProperty == aProperty);
|
|
|
|
aComputedValue = values[0].mValue;
|
|
return true;
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValues(nsCSSProperty aProperty,
|
|
nsCSSProps::EnabledState aEnabledState,
|
|
dom::Element* aTargetElement,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aResult)
|
|
{
|
|
MOZ_ASSERT(aTargetElement, "null target element");
|
|
MOZ_ASSERT(aTargetElement->GetCurrentDoc(),
|
|
"we should only be able to actively animate nodes that "
|
|
"are in a document");
|
|
|
|
// Parse specified value into a temporary css::StyleRule
|
|
RefPtr<css::StyleRule> styleRule =
|
|
BuildStyleRule(aProperty, aTargetElement, aSpecifiedValue, aUseSVGMode);
|
|
if (!styleRule) {
|
|
return false;
|
|
}
|
|
|
|
aResult.Clear();
|
|
return ComputeValues(aProperty, aEnabledState, aTargetElement, styleRule,
|
|
aResult, /* aIsContextSensitive */ nullptr);
|
|
}
|
|
|
|
/* static */ bool
|
|
StyleAnimationValue::ComputeValues(
|
|
nsCSSProperty aProperty,
|
|
nsCSSProps::EnabledState aEnabledState,
|
|
dom::Element* aTargetElement,
|
|
css::StyleRule* aStyleRule,
|
|
nsTArray<PropertyStyleAnimationValuePair>& aValues,
|
|
bool* aIsContextSensitive)
|
|
{
|
|
if (!nsCSSProps::IsEnabled(aProperty, aEnabledState)) {
|
|
return false;
|
|
}
|
|
|
|
// Look up style context for our target element
|
|
RefPtr<nsStyleContext> styleContext = LookupStyleContext(aTargetElement);
|
|
if (!styleContext) {
|
|
return false;
|
|
}
|
|
nsStyleSet* styleSet = styleContext->PresContext()->StyleSet();
|
|
|
|
RefPtr<nsStyleContext> tmpStyleContext;
|
|
if (aIsContextSensitive) {
|
|
MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
|
|
"to correctly set aIsContextSensitive for shorthand properties, "
|
|
"this code must be adjusted");
|
|
|
|
nsCOMArray<nsIStyleRule> ruleArray;
|
|
ruleArray.AppendObject(styleSet->InitialStyleRule());
|
|
css::Declaration* declaration = aStyleRule->GetDeclaration();
|
|
ruleArray.AppendObject(declaration);
|
|
declaration->SetImmutable();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(styleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
|
|
// Force walk of rule tree
|
|
nsStyleStructID sid = nsCSSProps::kSIDTable[aProperty];
|
|
tmpStyleContext->StyleData(sid);
|
|
|
|
// The rule node will have unconditional cached style data if the value is
|
|
// not context-sensitive. So if there's nothing cached, it's not context
|
|
// sensitive.
|
|
*aIsContextSensitive =
|
|
!tmpStyleContext->RuleNode()->NodeHasCachedUnconditionalData(sid);
|
|
}
|
|
|
|
// If we're not concerned whether the property is context sensitive then just
|
|
// add the rule to a new temporary style context alongside the target
|
|
// element's style context.
|
|
// Also, if we previously discovered that this property IS context-sensitive
|
|
// then we need to throw the temporary style context out since the property's
|
|
// value may have been biased by the 'initial' values supplied.
|
|
if (!aIsContextSensitive || *aIsContextSensitive) {
|
|
nsCOMArray<nsIStyleRule> ruleArray;
|
|
css::Declaration* declaration = aStyleRule->GetDeclaration();
|
|
ruleArray.AppendObject(declaration);
|
|
declaration->SetImmutable();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(styleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Extract computed value of our property (or all longhand components, if
|
|
// aProperty is a shorthand) from the temporary style rule
|
|
if (nsCSSProps::IsShorthand(aProperty)) {
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty, aEnabledState) {
|
|
if (nsCSSProps::kAnimTypeTable[*p] == eStyleAnimType_None) {
|
|
// Skip non-animatable component longhands.
|
|
continue;
|
|
}
|
|
PropertyStyleAnimationValuePair* pair = aValues.AppendElement();
|
|
pair->mProperty = *p;
|
|
if (!ExtractComputedValue(*p, tmpStyleContext,
|
|
pair->mValue)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
} else {
|
|
PropertyStyleAnimationValuePair* pair = aValues.AppendElement();
|
|
pair->mProperty = aProperty;
|
|
return ExtractComputedValue(aProperty, tmpStyleContext, pair->mValue);
|
|
}
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::UncomputeValue(nsCSSProperty aProperty,
|
|
const StyleAnimationValue& aComputedValue,
|
|
nsCSSValue& aSpecifiedValue)
|
|
{
|
|
Unit unit = aComputedValue.GetUnit();
|
|
switch (unit) {
|
|
case eUnit_Normal:
|
|
aSpecifiedValue.SetNormalValue();
|
|
break;
|
|
case eUnit_Auto:
|
|
aSpecifiedValue.SetAutoValue();
|
|
break;
|
|
case eUnit_None:
|
|
aSpecifiedValue.SetNoneValue();
|
|
break;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
aSpecifiedValue.
|
|
SetIntValue(aComputedValue.GetIntValue(), eCSSUnit_Enumerated);
|
|
break;
|
|
case eUnit_Integer:
|
|
aSpecifiedValue.
|
|
SetIntValue(aComputedValue.GetIntValue(), eCSSUnit_Integer);
|
|
break;
|
|
case eUnit_Coord:
|
|
nscoordToCSSValue(aComputedValue.GetCoordValue(), aSpecifiedValue);
|
|
break;
|
|
case eUnit_Percent:
|
|
aSpecifiedValue.SetPercentValue(aComputedValue.GetPercentValue());
|
|
break;
|
|
case eUnit_Float:
|
|
aSpecifiedValue.
|
|
SetFloatValue(aComputedValue.GetFloatValue(), eCSSUnit_Number);
|
|
break;
|
|
case eUnit_Color:
|
|
// colors can be alone, or part of a paint server
|
|
aSpecifiedValue.SetColorValue(aComputedValue.GetColorValue());
|
|
break;
|
|
case eUnit_Calc:
|
|
case eUnit_ObjectPosition: {
|
|
nsCSSValue* val = aComputedValue.GetCSSValueValue();
|
|
// Sanity-check that the underlying unit in the nsCSSValue is what we
|
|
// expect for our StyleAnimationValue::Unit:
|
|
MOZ_ASSERT((unit == eUnit_Calc && val->GetUnit() == eCSSUnit_Calc) ||
|
|
(unit == eUnit_ObjectPosition &&
|
|
val->GetUnit() == eCSSUnit_Array),
|
|
"unexpected unit");
|
|
aSpecifiedValue = *val;
|
|
break;
|
|
}
|
|
case eUnit_CSSValuePair: {
|
|
// Rule node processing expects pair values to be collapsed to a
|
|
// single value if both halves would be equal, for most but not
|
|
// all properties. At present, all animatable properties that
|
|
// use pairs do expect collapsing.
|
|
const nsCSSValuePair* pair = aComputedValue.GetCSSValuePairValue();
|
|
if (pair->mXValue == pair->mYValue) {
|
|
aSpecifiedValue = pair->mXValue;
|
|
} else {
|
|
aSpecifiedValue.SetPairValue(pair);
|
|
}
|
|
} break;
|
|
case eUnit_CSSValueTriplet: {
|
|
// Rule node processing expects triplet values to be collapsed to a
|
|
// single value if both halves would be equal, for most but not
|
|
// all properties. At present, all animatable properties that
|
|
// use pairs do expect collapsing.
|
|
const nsCSSValueTriplet* triplet = aComputedValue.GetCSSValueTripletValue();
|
|
if (triplet->mXValue == triplet->mYValue && triplet->mYValue == triplet->mZValue) {
|
|
aSpecifiedValue = triplet->mXValue;
|
|
} else {
|
|
aSpecifiedValue.SetTripletValue(triplet);
|
|
}
|
|
} break;
|
|
case eUnit_CSSRect: {
|
|
nsCSSRect& rect = aSpecifiedValue.SetRectValue();
|
|
rect = *aComputedValue.GetCSSRectValue();
|
|
} break;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPosition:
|
|
aSpecifiedValue.
|
|
SetDependentListValue(aComputedValue.GetCSSValueListValue());
|
|
break;
|
|
case eUnit_Transform:
|
|
aSpecifiedValue.
|
|
SetSharedListValue(aComputedValue.GetCSSValueSharedListValue());
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
aSpecifiedValue.
|
|
SetDependentPairListValue(aComputedValue.GetCSSValuePairListValue());
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::UncomputeValue(nsCSSProperty aProperty,
|
|
const StyleAnimationValue& aComputedValue,
|
|
nsAString& aSpecifiedValue)
|
|
{
|
|
aSpecifiedValue.Truncate(); // Clear outparam, if it's not already empty
|
|
|
|
if (aComputedValue.GetUnit() == eUnit_UnparsedString) {
|
|
aComputedValue.GetStringValue(aSpecifiedValue);
|
|
return true;
|
|
}
|
|
nsCSSValue val;
|
|
if (!StyleAnimationValue::UncomputeValue(aProperty, aComputedValue, val)) {
|
|
return false;
|
|
}
|
|
|
|
val.AppendToString(aProperty, aSpecifiedValue, nsCSSValue::eNormalized);
|
|
return true;
|
|
}
|
|
|
|
inline const void*
|
|
StyleDataAtOffset(const void* aStyleStruct, ptrdiff_t aOffset)
|
|
{
|
|
return reinterpret_cast<const char*>(aStyleStruct) + aOffset;
|
|
}
|
|
|
|
inline void*
|
|
StyleDataAtOffset(void* aStyleStruct, ptrdiff_t aOffset)
|
|
{
|
|
return reinterpret_cast<char*>(aStyleStruct) + aOffset;
|
|
}
|
|
|
|
static void
|
|
ExtractBorderColor(nsStyleContext* aStyleContext, const void* aStyleBorder,
|
|
mozilla::css::Side aSide,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
nscolor color;
|
|
bool foreground;
|
|
static_cast<const nsStyleBorder*>(aStyleBorder)->
|
|
GetBorderColor(aSide, color, foreground);
|
|
if (foreground) {
|
|
// FIXME: should add test for this
|
|
color = aStyleContext->StyleColor()->mColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
}
|
|
|
|
static bool
|
|
StyleCoordToValue(const nsStyleCoord& aCoord, StyleAnimationValue& aValue)
|
|
{
|
|
switch (aCoord.GetUnit()) {
|
|
case eStyleUnit_Normal:
|
|
aValue.SetNormalValue();
|
|
break;
|
|
case eStyleUnit_Auto:
|
|
aValue.SetAutoValue();
|
|
break;
|
|
case eStyleUnit_None:
|
|
aValue.SetNoneValue();
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
aValue.SetPercentValue(aCoord.GetPercentValue());
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
aValue.SetFloatValue(aCoord.GetFactorValue());
|
|
break;
|
|
case eStyleUnit_Coord:
|
|
aValue.SetCoordValue(aCoord.GetCoordValue());
|
|
break;
|
|
case eStyleUnit_Enumerated:
|
|
aValue.SetIntValue(aCoord.GetIntValue(),
|
|
StyleAnimationValue::eUnit_Enumerated);
|
|
break;
|
|
case eStyleUnit_Integer:
|
|
aValue.SetIntValue(aCoord.GetIntValue(),
|
|
StyleAnimationValue::eUnit_Integer);
|
|
break;
|
|
case eStyleUnit_Calc: {
|
|
nsAutoPtr<nsCSSValue> val(new nsCSSValue);
|
|
SetCalcValue(aCoord.GetCalcValue(), *val);
|
|
aValue.SetAndAdoptCSSValueValue(val.forget(),
|
|
StyleAnimationValue::eUnit_Calc);
|
|
break;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
StyleCoordToCSSValue(const nsStyleCoord& aCoord, nsCSSValue& aCSSValue)
|
|
{
|
|
switch (aCoord.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
nscoordToCSSValue(aCoord.GetCoordValue(), aCSSValue);
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
aCSSValue.SetFloatValue(aCoord.GetFactorValue(), eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
aCSSValue.SetPercentValue(aCoord.GetPercentValue());
|
|
break;
|
|
case eStyleUnit_Calc:
|
|
SetCalcValue(aCoord.GetCalcValue(), aCSSValue);
|
|
break;
|
|
case eStyleUnit_Degree:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Degree);
|
|
break;
|
|
case eStyleUnit_Grad:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Grad);
|
|
break;
|
|
case eStyleUnit_Radian:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Radian);
|
|
break;
|
|
case eStyleUnit_Turn:
|
|
aCSSValue.SetFloatValue(aCoord.GetAngleValue(), eCSSUnit_Turn);
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
SetPositionValue(const nsStyleBackground::Position& aPos, nsCSSValue& aCSSValue)
|
|
{
|
|
RefPtr<nsCSSValue::Array> posArray = nsCSSValue::Array::Create(4);
|
|
aCSSValue.SetArrayValue(posArray.get(), eCSSUnit_Array);
|
|
|
|
// NOTE: Array entries #0 and #2 here are intentionally left untouched, with
|
|
// eCSSUnit_Null. The purpose of these entries in our specified-style
|
|
// <position> representation is to store edge names. But for values
|
|
// extracted from computed style (which is what we're dealing with here),
|
|
// we'll just have a normalized "x,y" position, with no edge names needed.
|
|
nsCSSValue& xValue = posArray->Item(1);
|
|
nsCSSValue& yValue = posArray->Item(3);
|
|
|
|
SetCalcValue(&aPos.mXPosition, xValue);
|
|
SetCalcValue(&aPos.mYPosition, yValue);
|
|
}
|
|
|
|
/*
|
|
* Assign |aOutput = aInput|, except with any non-pixel lengths
|
|
* replaced with the equivalent in pixels, and any non-canonical calc()
|
|
* expressions replaced with canonical ones.
|
|
*/
|
|
static void
|
|
SubstitutePixelValues(nsStyleContext* aStyleContext,
|
|
const nsCSSValue& aInput, nsCSSValue& aOutput)
|
|
{
|
|
if (aInput.IsCalcUnit()) {
|
|
RuleNodeCacheConditions conditions;
|
|
nsRuleNode::ComputedCalc c =
|
|
nsRuleNode::SpecifiedCalcToComputedCalc(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
conditions);
|
|
nsStyleCoord::CalcValue c2;
|
|
c2.mLength = c.mLength;
|
|
c2.mPercent = c.mPercent;
|
|
c2.mHasPercent = true; // doesn't matter for transform translate
|
|
SetCalcValue(&c2, aOutput);
|
|
} else if (aInput.UnitHasArrayValue()) {
|
|
const nsCSSValue::Array *inputArray = aInput.GetArrayValue();
|
|
RefPtr<nsCSSValue::Array> outputArray =
|
|
nsCSSValue::Array::Create(inputArray->Count());
|
|
for (size_t i = 0, i_end = inputArray->Count(); i < i_end; ++i) {
|
|
SubstitutePixelValues(aStyleContext,
|
|
inputArray->Item(i), outputArray->Item(i));
|
|
}
|
|
aOutput.SetArrayValue(outputArray, aInput.GetUnit());
|
|
} else if (aInput.IsLengthUnit() &&
|
|
aInput.GetUnit() != eCSSUnit_Pixel) {
|
|
RuleNodeCacheConditions conditions;
|
|
nscoord len = nsRuleNode::CalcLength(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
conditions);
|
|
aOutput.SetFloatValue(nsPresContext::AppUnitsToFloatCSSPixels(len),
|
|
eCSSUnit_Pixel);
|
|
} else {
|
|
aOutput = aInput;
|
|
}
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::ExtractComputedValue(nsCSSProperty aProperty,
|
|
nsStyleContext* aStyleContext,
|
|
StyleAnimationValue& aComputedValue)
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"bad property");
|
|
const void* styleStruct =
|
|
aStyleContext->StyleData(nsCSSProps::kSIDTable[aProperty]);
|
|
ptrdiff_t ssOffset = nsCSSProps::kStyleStructOffsetTable[aProperty];
|
|
nsStyleAnimType animType = nsCSSProps::kAnimTypeTable[aProperty];
|
|
MOZ_ASSERT(0 <= ssOffset || animType == eStyleAnimType_Custom,
|
|
"must be dealing with animatable property");
|
|
switch (animType) {
|
|
case eStyleAnimType_Custom:
|
|
switch (aProperty) {
|
|
// For border-width, ignore the border-image business (which
|
|
// only exists until we update our implementation to the current
|
|
// spec) and use GetComputedBorder
|
|
|
|
#define BORDER_WIDTH_CASE(prop_, side_) \
|
|
case prop_: \
|
|
aComputedValue.SetCoordValue( \
|
|
static_cast<const nsStyleBorder*>(styleStruct)-> \
|
|
GetComputedBorder().side_); \
|
|
break;
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_bottom_width, bottom)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_left_width, left)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_right_width, right)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_top_width, top)
|
|
#undef BORDER_WIDTH_CASE
|
|
|
|
case eCSSProperty_column_rule_width:
|
|
aComputedValue.SetCoordValue(
|
|
static_cast<const nsStyleColumn*>(styleStruct)->
|
|
GetComputedColumnRuleWidth());
|
|
break;
|
|
|
|
case eCSSProperty_border_bottom_color:
|
|
ExtractBorderColor(aStyleContext, styleStruct, NS_SIDE_BOTTOM,
|
|
aComputedValue);
|
|
break;
|
|
case eCSSProperty_border_left_color:
|
|
ExtractBorderColor(aStyleContext, styleStruct, NS_SIDE_LEFT,
|
|
aComputedValue);
|
|
break;
|
|
case eCSSProperty_border_right_color:
|
|
ExtractBorderColor(aStyleContext, styleStruct, NS_SIDE_RIGHT,
|
|
aComputedValue);
|
|
break;
|
|
case eCSSProperty_border_top_color:
|
|
ExtractBorderColor(aStyleContext, styleStruct, NS_SIDE_TOP,
|
|
aComputedValue);
|
|
break;
|
|
|
|
case eCSSProperty_outline_color: {
|
|
const nsStyleOutline *styleOutline =
|
|
static_cast<const nsStyleOutline*>(styleStruct);
|
|
nscolor color;
|
|
if (!styleOutline->GetOutlineColor(color))
|
|
color = aStyleContext->StyleColor()->mColor;
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_column_rule_color: {
|
|
const nsStyleColumn *styleColumn =
|
|
static_cast<const nsStyleColumn*>(styleStruct);
|
|
nscolor color;
|
|
if (styleColumn->mColumnRuleColorIsForeground) {
|
|
color = aStyleContext->StyleColor()->mColor;
|
|
} else {
|
|
color = styleColumn->mColumnRuleColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_column_count: {
|
|
const nsStyleColumn *styleColumn =
|
|
static_cast<const nsStyleColumn*>(styleStruct);
|
|
if (styleColumn->mColumnCount == NS_STYLE_COLUMN_COUNT_AUTO) {
|
|
aComputedValue.SetAutoValue();
|
|
} else {
|
|
aComputedValue.SetIntValue(styleColumn->mColumnCount,
|
|
eUnit_Integer);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_order: {
|
|
const nsStylePosition *stylePosition =
|
|
static_cast<const nsStylePosition*>(styleStruct);
|
|
aComputedValue.SetIntValue(stylePosition->mOrder,
|
|
eUnit_Integer);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_text_decoration_color: {
|
|
const nsStyleTextReset *styleTextReset =
|
|
static_cast<const nsStyleTextReset*>(styleStruct);
|
|
nscolor color;
|
|
bool isForeground;
|
|
styleTextReset->GetDecorationColor(color, isForeground);
|
|
if (isForeground) {
|
|
color = aStyleContext->StyleColor()->mColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_text_decoration_style: {
|
|
uint8_t decorationStyle =
|
|
static_cast<const nsStyleTextReset*>(styleStruct)->
|
|
GetDecorationStyle();
|
|
aComputedValue.SetIntValue(decorationStyle, eUnit_Enumerated);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_text_emphasis_color: {
|
|
auto styleText = static_cast<const nsStyleText*>(styleStruct);
|
|
nscolor color = styleText->mTextEmphasisColorForeground ?
|
|
aStyleContext->StyleColor()->mColor : styleText->mTextEmphasisColor;
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_border_spacing: {
|
|
const nsStyleTableBorder *styleTableBorder =
|
|
static_cast<const nsStyleTableBorder*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
nscoordToCSSValue(styleTableBorder->mBorderSpacingCol, pair->mXValue);
|
|
nscoordToCSSValue(styleTableBorder->mBorderSpacingRow, pair->mYValue);
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_transform_origin: {
|
|
const nsStyleDisplay *styleDisplay =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueTriplet> triplet(new nsCSSValueTriplet);
|
|
if (!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[0],
|
|
triplet->mXValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[1],
|
|
triplet->mYValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[2],
|
|
triplet->mZValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueTripletValue(triplet.forget(),
|
|
eUnit_CSSValueTriplet);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_perspective_origin: {
|
|
const nsStyleDisplay *styleDisplay =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
if (!StyleCoordToCSSValue(styleDisplay->mPerspectiveOrigin[0],
|
|
pair->mXValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mPerspectiveOrigin[1],
|
|
pair->mYValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_stroke_dasharray: {
|
|
const nsStyleSVG *svg = static_cast<const nsStyleSVG*>(styleStruct);
|
|
MOZ_ASSERT((svg->mStrokeDasharray != nullptr) ==
|
|
(svg->mStrokeDasharrayLength != 0),
|
|
"pointer/length mismatch");
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (svg->mStrokeDasharray) {
|
|
MOZ_ASSERT(svg->mStrokeDasharrayLength > 0,
|
|
"non-null list should have positive length");
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = svg->mStrokeDasharrayLength;
|
|
i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
const nsStyleCoord &coord = svg->mStrokeDasharray[i];
|
|
nsCSSValue &value = item->mValue;
|
|
switch (coord.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
// Number means the same thing as length; we want to
|
|
// animate them the same way. Normalize both to number
|
|
// since it has more accuracy (float vs nscoord).
|
|
value.SetFloatValue(nsPresContext::
|
|
AppUnitsToFloatCSSPixels(coord.GetCoordValue()),
|
|
eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
value.SetFloatValue(coord.GetFactorValue(),
|
|
eCSSUnit_Number);
|
|
break;
|
|
case eStyleUnit_Percent:
|
|
value.SetPercentValue(coord.GetPercentValue());
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
result = new nsCSSValueList;
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Dasharray);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_font_stretch: {
|
|
int16_t stretch =
|
|
static_cast<const nsStyleFont*>(styleStruct)->mFont.stretch;
|
|
static_assert(NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED == -4 &&
|
|
NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED == 4,
|
|
"font stretch constants not as expected");
|
|
if (stretch < NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED ||
|
|
stretch > NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetIntValue(stretch, eUnit_Enumerated);
|
|
return true;
|
|
}
|
|
|
|
case eCSSProperty_font_weight: {
|
|
uint16_t weight =
|
|
static_cast<const nsStyleFont*>(styleStruct)->mFont.weight;
|
|
if (weight % 100 != 0) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetIntValue(weight, eUnit_Integer);
|
|
return true;
|
|
}
|
|
|
|
case eCSSProperty_image_region: {
|
|
const nsStyleList *list =
|
|
static_cast<const nsStyleList*>(styleStruct);
|
|
const nsRect &srect = list->mImageRegion;
|
|
if (srect.IsEmpty()) {
|
|
aComputedValue.SetAutoValue();
|
|
break;
|
|
}
|
|
|
|
nsCSSRect *vrect = new nsCSSRect;
|
|
nscoordToCSSValue(srect.x, vrect->mLeft);
|
|
nscoordToCSSValue(srect.y, vrect->mTop);
|
|
nscoordToCSSValue(srect.XMost(), vrect->mRight);
|
|
nscoordToCSSValue(srect.YMost(), vrect->mBottom);
|
|
aComputedValue.SetAndAdoptCSSRectValue(vrect, eUnit_CSSRect);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_clip: {
|
|
const nsStyleDisplay *display =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
if (!(display->mClipFlags & NS_STYLE_CLIP_RECT)) {
|
|
aComputedValue.SetAutoValue();
|
|
} else {
|
|
nsCSSRect *vrect = new nsCSSRect;
|
|
const nsRect &srect = display->mClip;
|
|
if (display->mClipFlags & NS_STYLE_CLIP_TOP_AUTO) {
|
|
vrect->mTop.SetAutoValue();
|
|
} else {
|
|
nscoordToCSSValue(srect.y, vrect->mTop);
|
|
}
|
|
if (display->mClipFlags & NS_STYLE_CLIP_RIGHT_AUTO) {
|
|
vrect->mRight.SetAutoValue();
|
|
} else {
|
|
nscoordToCSSValue(srect.XMost(), vrect->mRight);
|
|
}
|
|
if (display->mClipFlags & NS_STYLE_CLIP_BOTTOM_AUTO) {
|
|
vrect->mBottom.SetAutoValue();
|
|
} else {
|
|
nscoordToCSSValue(srect.YMost(), vrect->mBottom);
|
|
}
|
|
if (display->mClipFlags & NS_STYLE_CLIP_LEFT_AUTO) {
|
|
vrect->mLeft.SetAutoValue();
|
|
} else {
|
|
nscoordToCSSValue(srect.x, vrect->mLeft);
|
|
}
|
|
aComputedValue.SetAndAdoptCSSRectValue(vrect, eUnit_CSSRect);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_object_position: {
|
|
const nsStylePosition* stylePos =
|
|
static_cast<const nsStylePosition*>(styleStruct);
|
|
|
|
nsAutoPtr<nsCSSValue> val(new nsCSSValue);
|
|
SetPositionValue(stylePos->mObjectPosition, *val);
|
|
|
|
aComputedValue.SetAndAdoptCSSValueValue(val.forget(),
|
|
eUnit_ObjectPosition);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_background_position: {
|
|
const nsStyleBackground *bg =
|
|
static_cast<const nsStyleBackground*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
MOZ_ASSERT(bg->mPositionCount > 0, "unexpected count");
|
|
for (uint32_t i = 0, i_end = bg->mPositionCount; i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
SetPositionValue(bg->mLayers[i].mPosition, item->mValue);
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_BackgroundPosition);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_background_size: {
|
|
const nsStyleBackground *bg =
|
|
static_cast<const nsStyleBackground*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePairList> result;
|
|
nsCSSValuePairList **resultTail = getter_Transfers(result);
|
|
MOZ_ASSERT(bg->mSizeCount > 0, "unexpected count");
|
|
for (uint32_t i = 0, i_end = bg->mSizeCount; i != i_end; ++i) {
|
|
nsCSSValuePairList *item = new nsCSSValuePairList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
const nsStyleBackground::Size &size = bg->mLayers[i].mSize;
|
|
switch (size.mWidthType) {
|
|
case nsStyleBackground::Size::eContain:
|
|
case nsStyleBackground::Size::eCover:
|
|
item->mXValue.SetIntValue(size.mWidthType,
|
|
eCSSUnit_Enumerated);
|
|
break;
|
|
case nsStyleBackground::Size::eAuto:
|
|
item->mXValue.SetAutoValue();
|
|
break;
|
|
case nsStyleBackground::Size::eLengthPercentage:
|
|
// XXXbz is there a good reason we can't just
|
|
// SetCalcValue(&size.mWidth, item->mXValue) here?
|
|
if (!size.mWidth.mHasPercent &&
|
|
// negative values must have come from calc()
|
|
size.mWidth.mLength >= 0) {
|
|
MOZ_ASSERT(size.mWidth.mPercent == 0.0f,
|
|
"Shouldn't have mPercent");
|
|
nscoordToCSSValue(size.mWidth.mLength, item->mXValue);
|
|
} else if (size.mWidth.mLength == 0 &&
|
|
// negative values must have come from calc()
|
|
size.mWidth.mPercent >= 0.0f) {
|
|
item->mXValue.SetPercentValue(size.mWidth.mPercent);
|
|
} else {
|
|
SetCalcValue(&size.mWidth, item->mXValue);
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch (size.mHeightType) {
|
|
case nsStyleBackground::Size::eContain:
|
|
case nsStyleBackground::Size::eCover:
|
|
// leave it null
|
|
break;
|
|
case nsStyleBackground::Size::eAuto:
|
|
item->mYValue.SetAutoValue();
|
|
break;
|
|
case nsStyleBackground::Size::eLengthPercentage:
|
|
// XXXbz is there a good reason we can't just
|
|
// SetCalcValue(&size.mHeight, item->mYValue) here?
|
|
if (!size.mHeight.mHasPercent &&
|
|
// negative values must have come from calc()
|
|
size.mHeight.mLength >= 0) {
|
|
MOZ_ASSERT(size.mHeight.mPercent == 0.0f,
|
|
"Shouldn't have mPercent");
|
|
nscoordToCSSValue(size.mHeight.mLength, item->mYValue);
|
|
} else if (size.mHeight.mLength == 0 &&
|
|
// negative values must have come from calc()
|
|
size.mHeight.mPercent >= 0.0f) {
|
|
item->mYValue.SetPercentValue(size.mHeight.mPercent);
|
|
} else {
|
|
SetCalcValue(&size.mHeight, item->mYValue);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValuePairListValue(result.forget());
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_filter: {
|
|
const nsStyleSVGReset *svgReset =
|
|
static_cast<const nsStyleSVGReset*>(styleStruct);
|
|
const nsTArray<nsStyleFilter>& filters = svgReset->mFilters;
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0; i < filters.Length(); ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
const nsStyleFilter& filter = filters[i];
|
|
int32_t type = filter.GetType();
|
|
if (type == NS_STYLE_FILTER_URL) {
|
|
nsIDocument* doc = aStyleContext->PresContext()->Document();
|
|
RefPtr<nsStringBuffer> uriAsStringBuffer =
|
|
GetURIAsUtf16StringBuffer(filter.GetURL());
|
|
RefPtr<mozilla::css::URLValue> url =
|
|
new mozilla::css::URLValue(filter.GetURL(),
|
|
uriAsStringBuffer,
|
|
doc->GetDocumentURI(),
|
|
doc->NodePrincipal());
|
|
item->mValue.SetURLValue(url);
|
|
} else {
|
|
nsCSSKeyword functionName =
|
|
nsCSSProps::ValueToKeywordEnum(type,
|
|
nsCSSProps::kFilterFunctionKTable);
|
|
nsCSSValue::Array* filterArray =
|
|
item->mValue.InitFunction(functionName, 1);
|
|
if (type >= NS_STYLE_FILTER_BLUR && type <= NS_STYLE_FILTER_HUE_ROTATE) {
|
|
if (!StyleCoordToCSSValue(
|
|
filter.GetFilterParameter(),
|
|
filterArray->Item(1))) {
|
|
return false;
|
|
}
|
|
} else if (type == NS_STYLE_FILTER_DROP_SHADOW) {
|
|
nsCSSValueList* shadowResult = filterArray->Item(1).SetListValue();
|
|
nsAutoPtr<nsCSSValueList> tmpShadowValue;
|
|
nsCSSValueList **tmpShadowResultTail = getter_Transfers(tmpShadowValue);
|
|
nsCSSShadowArray* shadowArray = filter.GetDropShadow();
|
|
MOZ_ASSERT(shadowArray->Length() == 1,
|
|
"expected exactly one shadow");
|
|
AppendCSSShadowValue(shadowArray->ShadowAt(0), tmpShadowResultTail);
|
|
*shadowResult = *tmpShadowValue;
|
|
} else {
|
|
// We checked all possible nsStyleFilter types but
|
|
// NS_STYLE_FILTER_NULL before. We should never enter this path.
|
|
NS_NOTREACHED("no other filter functions defined");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Filter);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_transform: {
|
|
const nsStyleDisplay *display =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (display->mSpecifiedTransform) {
|
|
// Clone, and convert all lengths (not percents) to pixels.
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (const nsCSSValueList *l = display->mSpecifiedTransform->mHead;
|
|
l; l = l->mNext) {
|
|
nsCSSValueList *clone = new nsCSSValueList;
|
|
*resultTail = clone;
|
|
resultTail = &clone->mNext;
|
|
|
|
SubstitutePixelValues(aStyleContext, l->mValue, clone->mValue);
|
|
}
|
|
} else {
|
|
result = new nsCSSValueList();
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
|
|
aComputedValue.SetTransformValue(
|
|
new nsCSSValueSharedList(result.forget()));
|
|
break;
|
|
}
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "missing property implementation");
|
|
return false;
|
|
};
|
|
return true;
|
|
case eStyleAnimType_Coord: {
|
|
const nsStyleCoord& coord = *static_cast<const nsStyleCoord*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_NUMBERS_ARE_PIXELS) &&
|
|
coord.GetUnit() == eStyleUnit_Coord) {
|
|
// For SVG properties where number means the same thing as length,
|
|
// we want to animate them the same way. Normalize both to number
|
|
// since it has more accuracy (float vs nscoord).
|
|
aComputedValue.SetFloatValue(nsPresContext::
|
|
AppUnitsToFloatCSSPixels(coord.GetCoordValue()));
|
|
return true;
|
|
}
|
|
return StyleCoordToValue(coord, aComputedValue);
|
|
}
|
|
case eStyleAnimType_Sides_Top:
|
|
case eStyleAnimType_Sides_Right:
|
|
case eStyleAnimType_Sides_Bottom:
|
|
case eStyleAnimType_Sides_Left: {
|
|
static_assert(
|
|
NS_SIDE_TOP == eStyleAnimType_Sides_Top -eStyleAnimType_Sides_Top &&
|
|
NS_SIDE_RIGHT == eStyleAnimType_Sides_Right -eStyleAnimType_Sides_Top &&
|
|
NS_SIDE_BOTTOM == eStyleAnimType_Sides_Bottom-eStyleAnimType_Sides_Top &&
|
|
NS_SIDE_LEFT == eStyleAnimType_Sides_Left -eStyleAnimType_Sides_Top,
|
|
"box side constants out of sync with animation side constants");
|
|
|
|
const nsStyleCoord &coord = static_cast<const nsStyleSides*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset))->
|
|
Get(mozilla::css::Side(animType - eStyleAnimType_Sides_Top));
|
|
return StyleCoordToValue(coord, aComputedValue);
|
|
}
|
|
case eStyleAnimType_Corner_TopLeft:
|
|
case eStyleAnimType_Corner_TopRight:
|
|
case eStyleAnimType_Corner_BottomRight:
|
|
case eStyleAnimType_Corner_BottomLeft: {
|
|
static_assert(
|
|
NS_CORNER_TOP_LEFT == eStyleAnimType_Corner_TopLeft -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_TOP_RIGHT == eStyleAnimType_Corner_TopRight -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_BOTTOM_RIGHT == eStyleAnimType_Corner_BottomRight -
|
|
eStyleAnimType_Corner_TopLeft &&
|
|
NS_CORNER_BOTTOM_LEFT == eStyleAnimType_Corner_BottomLeft -
|
|
eStyleAnimType_Corner_TopLeft,
|
|
"box corner constants out of sync with animation corner constants");
|
|
|
|
const nsStyleCorners *corners = static_cast<const nsStyleCorners*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
uint8_t fullCorner = animType - eStyleAnimType_Corner_TopLeft;
|
|
const nsStyleCoord &horiz =
|
|
corners->Get(NS_FULL_TO_HALF_CORNER(fullCorner, false));
|
|
const nsStyleCoord &vert =
|
|
corners->Get(NS_FULL_TO_HALF_CORNER(fullCorner, true));
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
if (!StyleCoordToCSSValue(horiz, pair->mXValue) ||
|
|
!StyleCoordToCSSValue(vert, pair->mYValue)) {
|
|
return false;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_nscoord:
|
|
aComputedValue.SetCoordValue(*static_cast<const nscoord*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset)));
|
|
return true;
|
|
case eStyleAnimType_EnumU8:
|
|
aComputedValue.SetIntValue(*static_cast<const uint8_t*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset)), eUnit_Enumerated);
|
|
return true;
|
|
case eStyleAnimType_float:
|
|
aComputedValue.SetFloatValue(*static_cast<const float*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset)));
|
|
if (aProperty == eCSSProperty_font_size_adjust &&
|
|
aComputedValue.GetFloatValue() == -1.0f) {
|
|
// In nsStyleFont, we set mFont.sizeAdjust to -1.0 to represent
|
|
// font-size-adjust: none. Here, we have to treat this as a keyword
|
|
// instead of a float value, to make sure we don't end up doing
|
|
// interpolation with it.
|
|
aComputedValue.SetNoneValue();
|
|
}
|
|
return true;
|
|
case eStyleAnimType_Color:
|
|
aComputedValue.SetColorValue(*static_cast<const nscolor*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset)));
|
|
return true;
|
|
case eStyleAnimType_PaintServer: {
|
|
const nsStyleSVGPaint &paint = *static_cast<const nsStyleSVGPaint*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
if (paint.mType == eStyleSVGPaintType_Color) {
|
|
aComputedValue.SetColorValue(paint.mPaint.mColor);
|
|
return true;
|
|
}
|
|
if (paint.mType == eStyleSVGPaintType_Server) {
|
|
if (!paint.mPaint.mPaintServer) {
|
|
NS_WARNING("Null paint server");
|
|
return false;
|
|
}
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
RefPtr<nsStringBuffer> uriAsStringBuffer =
|
|
GetURIAsUtf16StringBuffer(paint.mPaint.mPaintServer);
|
|
NS_ENSURE_TRUE(!!uriAsStringBuffer, false);
|
|
nsIDocument* doc = aStyleContext->PresContext()->Document();
|
|
RefPtr<mozilla::css::URLValue> url =
|
|
new mozilla::css::URLValue(paint.mPaint.mPaintServer,
|
|
uriAsStringBuffer,
|
|
doc->GetDocumentURI(),
|
|
doc->NodePrincipal());
|
|
pair->mXValue.SetURLValue(url);
|
|
pair->mYValue.SetColorValue(paint.mFallbackColor);
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
if (paint.mType == eStyleSVGPaintType_ContextFill ||
|
|
paint.mType == eStyleSVGPaintType_ContextStroke) {
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
pair->mXValue.SetIntValue(paint.mType == eStyleSVGPaintType_ContextFill ?
|
|
NS_COLOR_CONTEXT_FILL : NS_COLOR_CONTEXT_STROKE,
|
|
eCSSUnit_Enumerated);
|
|
pair->mYValue.SetColorValue(paint.mFallbackColor);
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
MOZ_ASSERT(paint.mType == eStyleSVGPaintType_None,
|
|
"Unexpected SVG paint type");
|
|
aComputedValue.SetNoneValue();
|
|
return true;
|
|
}
|
|
case eStyleAnimType_Shadow: {
|
|
const nsCSSShadowArray *shadowArray =
|
|
*static_cast<const RefPtr<nsCSSShadowArray>*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
if (!shadowArray) {
|
|
aComputedValue.SetAndAdoptCSSValueListValue(nullptr, eUnit_Shadow);
|
|
return true;
|
|
}
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (uint32_t i = 0, i_end = shadowArray->Length(); i < i_end; ++i) {
|
|
AppendCSSShadowValue(shadowArray->ShadowAt(i), resultTail);
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Shadow);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_None:
|
|
NS_NOTREACHED("shouldn't use on non-animatable properties");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
gfxSize
|
|
StyleAnimationValue::GetScaleValue(const nsIFrame* aForFrame) const
|
|
{
|
|
MOZ_ASSERT(aForFrame);
|
|
MOZ_ASSERT(GetUnit() == StyleAnimationValue::eUnit_Transform);
|
|
|
|
nsCSSValueSharedList* list = GetCSSValueSharedListValue();
|
|
MOZ_ASSERT(list->mHead);
|
|
|
|
RuleNodeCacheConditions dontCare;
|
|
nsStyleTransformMatrix::TransformReferenceBox refBox(aForFrame);
|
|
Matrix4x4 transform = nsStyleTransformMatrix::ReadTransforms(
|
|
list->mHead,
|
|
aForFrame->StyleContext(),
|
|
aForFrame->PresContext(), dontCare, refBox,
|
|
aForFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
Matrix transform2d;
|
|
bool canDraw2D = transform.CanDraw2D(&transform2d);
|
|
if (!canDraw2D) {
|
|
return gfxSize();
|
|
}
|
|
|
|
return ThebesMatrix(transform2d).ScaleFactors(true);
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(int32_t aInt, Unit aUnit,
|
|
IntegerConstructorType)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(nscoord aLength, CoordConstructorType)
|
|
{
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(float aPercent,
|
|
PercentConstructorType)
|
|
{
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(float aFloat, FloatConstructorType)
|
|
{
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
StyleAnimationValue::StyleAnimationValue(nscolor aColor, ColorConstructorType)
|
|
{
|
|
mUnit = eUnit_Color;
|
|
mValue.mColor = aColor;
|
|
}
|
|
|
|
StyleAnimationValue&
|
|
StyleAnimationValue::operator=(const StyleAnimationValue& aOther)
|
|
{
|
|
if (this == &aOther) {
|
|
return *this;
|
|
}
|
|
|
|
FreeValue();
|
|
|
|
mUnit = aOther.mUnit;
|
|
switch (mUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Normal:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
break;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
case eUnit_Integer:
|
|
mValue.mInt = aOther.mValue.mInt;
|
|
break;
|
|
case eUnit_Coord:
|
|
mValue.mCoord = aOther.mValue.mCoord;
|
|
break;
|
|
case eUnit_Percent:
|
|
case eUnit_Float:
|
|
mValue.mFloat = aOther.mValue.mFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
break;
|
|
case eUnit_Color:
|
|
mValue.mColor = aOther.mValue.mColor;
|
|
break;
|
|
case eUnit_Calc:
|
|
case eUnit_ObjectPosition:
|
|
MOZ_ASSERT(IsCSSValueUnit(mUnit),
|
|
"This clause is for handling nsCSSValue-backed units");
|
|
MOZ_ASSERT(aOther.mValue.mCSSValue, "values may not be null");
|
|
mValue.mCSSValue = new nsCSSValue(*aOther.mValue.mCSSValue);
|
|
break;
|
|
case eUnit_CSSValuePair:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValuePair,
|
|
"value pairs may not be null");
|
|
mValue.mCSSValuePair = new nsCSSValuePair(*aOther.mValue.mCSSValuePair);
|
|
break;
|
|
case eUnit_CSSValueTriplet:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValueTriplet,
|
|
"value triplets may not be null");
|
|
mValue.mCSSValueTriplet = new nsCSSValueTriplet(*aOther.mValue.mCSSValueTriplet);
|
|
break;
|
|
case eUnit_CSSRect:
|
|
MOZ_ASSERT(aOther.mValue.mCSSRect, "rects may not be null");
|
|
mValue.mCSSRect = new nsCSSRect(*aOther.mValue.mCSSRect);
|
|
break;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPosition:
|
|
MOZ_ASSERT(mUnit == eUnit_Shadow || mUnit == eUnit_Filter ||
|
|
aOther.mValue.mCSSValueList,
|
|
"value lists other than shadows and filters may not be null");
|
|
if (aOther.mValue.mCSSValueList) {
|
|
mValue.mCSSValueList = aOther.mValue.mCSSValueList->Clone();
|
|
} else {
|
|
mValue.mCSSValueList = nullptr;
|
|
}
|
|
break;
|
|
case eUnit_Transform:
|
|
mValue.mCSSValueSharedList = aOther.mValue.mCSSValueSharedList;
|
|
mValue.mCSSValueSharedList->AddRef();
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
MOZ_ASSERT(aOther.mValue.mCSSValuePairList,
|
|
"value pair lists may not be null");
|
|
mValue.mCSSValuePairList = aOther.mValue.mCSSValuePairList->Clone();
|
|
break;
|
|
case eUnit_UnparsedString:
|
|
MOZ_ASSERT(aOther.mValue.mString, "expecting non-null string");
|
|
mValue.mString = aOther.mValue.mString;
|
|
mValue.mString->AddRef();
|
|
break;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetNormalValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Normal;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAutoValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Auto;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetNoneValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_None;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetIntValue(int32_t aInt, Unit aUnit)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
FreeValue();
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetCoordValue(nscoord aLength)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetPercentValue(float aPercent)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetFloatValue(float aFloat)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetColorValue(nscolor aColor)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Color;
|
|
mValue.mColor = aColor;
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetUnparsedStringValue(const nsString& aString)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_UnparsedString;
|
|
mValue.mString = nsCSSValue::BufferFromString(aString).take();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueValue(nsCSSValue *aValue,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValue != nullptr, "values may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValue = aValue; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValuePairValue(nsCSSValuePair *aValuePair,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValuePairUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValuePair != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValuePair = aValuePair; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueTripletValue(
|
|
nsCSSValueTriplet *aValueTriplet, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueTripletUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aValueTriplet != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueTriplet = aValueTriplet; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSRectValue(nsCSSRect *aRect, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSRectUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aRect != nullptr, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSRect = aRect; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValueListValue(nsCSSValueList *aValueList,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(IsCSSValueListUnit(aUnit), "bad unit");
|
|
MOZ_ASSERT(aUnit == eUnit_Shadow || aUnit == eUnit_Filter ||
|
|
aValueList != nullptr,
|
|
"value lists other than shadows and filters may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueList = aValueList; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetTransformValue(nsCSSValueSharedList* aList)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Transform;
|
|
mValue.mCSSValueSharedList = aList;
|
|
mValue.mCSSValueSharedList->AddRef();
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::SetAndAdoptCSSValuePairListValue(
|
|
nsCSSValuePairList *aValuePairList)
|
|
{
|
|
FreeValue();
|
|
MOZ_ASSERT(aValuePairList, "may not be null");
|
|
mUnit = eUnit_CSSValuePairList;
|
|
mValue.mCSSValuePairList = aValuePairList; // take ownership
|
|
}
|
|
|
|
void
|
|
StyleAnimationValue::FreeValue()
|
|
{
|
|
if (IsCSSValueUnit(mUnit)) {
|
|
delete mValue.mCSSValue;
|
|
} else if (IsCSSValueListUnit(mUnit)) {
|
|
delete mValue.mCSSValueList;
|
|
} else if (IsCSSValueSharedListValue(mUnit)) {
|
|
mValue.mCSSValueSharedList->Release();
|
|
} else if (IsCSSValuePairUnit(mUnit)) {
|
|
delete mValue.mCSSValuePair;
|
|
} else if (IsCSSValueTripletUnit(mUnit)) {
|
|
delete mValue.mCSSValueTriplet;
|
|
} else if (IsCSSRectUnit(mUnit)) {
|
|
delete mValue.mCSSRect;
|
|
} else if (IsCSSValuePairListUnit(mUnit)) {
|
|
delete mValue.mCSSValuePairList;
|
|
} else if (IsStringUnit(mUnit)) {
|
|
MOZ_ASSERT(mValue.mString, "expecting non-null string");
|
|
mValue.mString->Release();
|
|
}
|
|
}
|
|
|
|
bool
|
|
StyleAnimationValue::operator==(const StyleAnimationValue& aOther) const
|
|
{
|
|
if (mUnit != aOther.mUnit) {
|
|
return false;
|
|
}
|
|
|
|
switch (mUnit) {
|
|
case eUnit_Null:
|
|
case eUnit_Normal:
|
|
case eUnit_Auto:
|
|
case eUnit_None:
|
|
return true;
|
|
case eUnit_Enumerated:
|
|
case eUnit_Visibility:
|
|
case eUnit_Integer:
|
|
return mValue.mInt == aOther.mValue.mInt;
|
|
case eUnit_Coord:
|
|
return mValue.mCoord == aOther.mValue.mCoord;
|
|
case eUnit_Percent:
|
|
case eUnit_Float:
|
|
return mValue.mFloat == aOther.mValue.mFloat;
|
|
case eUnit_Color:
|
|
return mValue.mColor == aOther.mValue.mColor;
|
|
case eUnit_Calc:
|
|
case eUnit_ObjectPosition:
|
|
MOZ_ASSERT(IsCSSValueUnit(mUnit),
|
|
"This clause is for handling nsCSSValue-backed units");
|
|
return *mValue.mCSSValue == *aOther.mValue.mCSSValue;
|
|
case eUnit_CSSValuePair:
|
|
return *mValue.mCSSValuePair == *aOther.mValue.mCSSValuePair;
|
|
case eUnit_CSSValueTriplet:
|
|
return *mValue.mCSSValueTriplet == *aOther.mValue.mCSSValueTriplet;
|
|
case eUnit_CSSRect:
|
|
return *mValue.mCSSRect == *aOther.mValue.mCSSRect;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Filter:
|
|
case eUnit_BackgroundPosition:
|
|
return nsCSSValueList::Equal(mValue.mCSSValueList,
|
|
aOther.mValue.mCSSValueList);
|
|
case eUnit_Transform:
|
|
return *mValue.mCSSValueSharedList == *aOther.mValue.mCSSValueSharedList;
|
|
case eUnit_CSSValuePairList:
|
|
return nsCSSValuePairList::Equal(mValue.mCSSValuePairList,
|
|
aOther.mValue.mCSSValuePairList);
|
|
case eUnit_UnparsedString:
|
|
return (NS_strcmp(GetStringBufferValue(),
|
|
aOther.GetStringBufferValue()) == 0);
|
|
}
|
|
|
|
NS_NOTREACHED("incomplete case");
|
|
return false;
|
|
}
|
|
|