mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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3386 lines
121 KiB
C++
3386 lines
121 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is nsStyleAnimation.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Daniel Holbert <dholbert@mozilla.com>, Mozilla Corporation
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* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* Utilities for animation of computed style values */
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#include "mozilla/Util.h"
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#include "nsStyleAnimation.h"
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#include "nsCOMArray.h"
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#include "nsIStyleRule.h"
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#include "mozilla/css/StyleRule.h"
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#include "nsString.h"
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#include "nsStyleContext.h"
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#include "nsStyleSet.h"
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#include "nsComputedDOMStyle.h"
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#include "nsCSSParser.h"
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#include "mozilla/css/Declaration.h"
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#include "mozilla/dom/Element.h"
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#include "prlog.h"
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#include <math.h>
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#include "gfxMatrix.h"
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#include "gfxQuaternion.h"
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using namespace mozilla;
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// HELPER METHODS
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// --------------
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/*
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* Given two units, this method returns a common unit that they can both be
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* converted into, if possible. This is intended to facilitate
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* interpolation, distance-computation, and addition between "similar" units.
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*
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* The ordering of the arguments should not affect the output of this method.
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*
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* If there's no sensible common unit, this method returns eUnit_Null.
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*
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* @param aFirstUnit One unit to resolve.
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* @param aFirstUnit The other unit to resolve.
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* @return A "common" unit that both source units can be converted into, or
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* eUnit_Null if that's not possible.
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*/
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static
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nsStyleAnimation::Unit
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GetCommonUnit(nsCSSProperty aProperty,
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nsStyleAnimation::Unit aFirstUnit,
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nsStyleAnimation::Unit aSecondUnit)
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{
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if (aFirstUnit != aSecondUnit) {
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if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
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(aFirstUnit == nsStyleAnimation::eUnit_Coord ||
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aFirstUnit == nsStyleAnimation::eUnit_Percent ||
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aFirstUnit == nsStyleAnimation::eUnit_Calc) &&
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(aSecondUnit == nsStyleAnimation::eUnit_Coord ||
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aSecondUnit == nsStyleAnimation::eUnit_Percent ||
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aSecondUnit == nsStyleAnimation::eUnit_Calc)) {
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// We can use calc() as the common unit.
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return nsStyleAnimation::eUnit_Calc;
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}
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return nsStyleAnimation::eUnit_Null;
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}
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return aFirstUnit;
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}
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static
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nsCSSUnit
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GetCommonUnit(nsCSSProperty aProperty,
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nsCSSUnit aFirstUnit,
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nsCSSUnit aSecondUnit)
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{
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if (aFirstUnit != aSecondUnit) {
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if (nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_STORES_CALC) &&
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(aFirstUnit == eCSSUnit_Pixel ||
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aFirstUnit == eCSSUnit_Percent ||
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aFirstUnit == eCSSUnit_Calc) &&
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(aSecondUnit == eCSSUnit_Pixel ||
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aSecondUnit == eCSSUnit_Percent ||
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aSecondUnit == eCSSUnit_Calc)) {
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// We can use calc() as the common unit.
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return eCSSUnit_Calc;
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}
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return eCSSUnit_Null;
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}
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return aFirstUnit;
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}
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// Greatest Common Divisor
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static PRUint32
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gcd(PRUint32 a, PRUint32 b)
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{
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// Euclid's algorithm; O(N) in the worst case. (There are better
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// ways, but we don't need them for stroke-dasharray animation.)
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NS_ABORT_IF_FALSE(a > 0 && b > 0, "positive numbers expected");
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while (a != b) {
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if (a > b) {
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a = a - b;
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} else {
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b = b - a;
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}
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}
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return a;
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}
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// Least Common Multiple
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static PRUint32
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lcm(PRUint32 a, PRUint32 b)
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{
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// Divide first to reduce overflow risk.
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return (a / gcd(a, b)) * b;
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}
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inline void
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nscoordToCSSValue(nscoord aCoord, nsCSSValue& aCSSValue)
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{
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aCSSValue.SetFloatValue(nsPresContext::AppUnitsToFloatCSSPixels(aCoord),
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eCSSUnit_Pixel);
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}
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// Like nsStyleCoord::Calc, but with length in float pixels instead of nscoord.
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struct CalcValue {
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float mLength, mPercent;
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bool mHasPercent;
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};
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// Requires a canonical calc() value that we generated.
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static CalcValue
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ExtractCalcValueInternal(const nsCSSValue& aValue)
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{
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NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Calc, "unexpected unit");
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nsCSSValue::Array *arr = aValue.GetArrayValue();
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NS_ABORT_IF_FALSE(arr->Count() == 1, "unexpected length");
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const nsCSSValue &topval = arr->Item(0);
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CalcValue result;
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if (topval.GetUnit() == eCSSUnit_Pixel) {
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result.mLength = topval.GetFloatValue();
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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} else {
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NS_ABORT_IF_FALSE(topval.GetUnit() == eCSSUnit_Calc_Plus,
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"unexpected unit");
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nsCSSValue::Array *arr2 = topval.GetArrayValue();
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const nsCSSValue &len = arr2->Item(0);
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const nsCSSValue &pct = arr2->Item(1);
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NS_ABORT_IF_FALSE(len.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
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NS_ABORT_IF_FALSE(pct.GetUnit() == eCSSUnit_Percent, "unexpected unit");
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result.mLength = len.GetFloatValue();
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result.mPercent = pct.GetPercentValue();
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result.mHasPercent = true;
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}
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return result;
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}
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// Requires a canonical calc() value that we generated.
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static CalcValue
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ExtractCalcValue(const nsStyleAnimation::Value& aValue)
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{
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CalcValue result;
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if (aValue.GetUnit() == nsStyleAnimation::eUnit_Coord) {
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result.mLength =
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nsPresContext::AppUnitsToFloatCSSPixels(aValue.GetCoordValue());
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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return result;
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}
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if (aValue.GetUnit() == nsStyleAnimation::eUnit_Percent) {
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result.mLength = 0.0f;
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result.mPercent = aValue.GetPercentValue();
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result.mHasPercent = true;
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return result;
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}
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NS_ABORT_IF_FALSE(aValue.GetUnit() == nsStyleAnimation::eUnit_Calc,
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"unexpected unit");
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nsCSSValue *val = aValue.GetCSSValueValue();
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return ExtractCalcValueInternal(*val);
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}
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static CalcValue
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ExtractCalcValue(const nsCSSValue& aValue)
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{
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CalcValue result;
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if (aValue.GetUnit() == eCSSUnit_Pixel) {
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result.mLength = aValue.GetFloatValue();
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result.mPercent = 0.0f;
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result.mHasPercent = false;
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return result;
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}
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if (aValue.GetUnit() == eCSSUnit_Percent) {
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result.mLength = 0.0f;
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result.mPercent = aValue.GetPercentValue();
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result.mHasPercent = true;
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return result;
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}
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return ExtractCalcValueInternal(aValue);
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}
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static void
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SetCalcValue(const nsStyleCoord::Calc* aCalc, nsCSSValue& aValue)
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{
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nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(1);
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if (!aCalc->mHasPercent) {
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nscoordToCSSValue(aCalc->mLength, arr->Item(0));
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} else {
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nsCSSValue::Array *arr2 = nsCSSValue::Array::Create(2);
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arr->Item(0).SetArrayValue(arr2, eCSSUnit_Calc_Plus);
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nscoordToCSSValue(aCalc->mLength, arr2->Item(0));
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arr2->Item(1).SetPercentValue(aCalc->mPercent);
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}
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aValue.SetArrayValue(arr, eCSSUnit_Calc);
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}
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static already_AddRefed<nsStringBuffer>
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GetURIAsUtf16StringBuffer(nsIURI* aUri)
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{
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nsCAutoString utf8String;
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nsresult rv = aUri->GetSpec(utf8String);
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NS_ENSURE_SUCCESS(rv, nsnull);
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return nsCSSValue::BufferFromString(NS_ConvertUTF8toUTF16(utf8String));
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}
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// CLASS METHODS
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// -------------
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bool
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nsStyleAnimation::ComputeDistance(nsCSSProperty aProperty,
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const Value& aStartValue,
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const Value& aEndValue,
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double& aDistance)
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{
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Unit commonUnit =
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GetCommonUnit(aProperty, aStartValue.GetUnit(), aEndValue.GetUnit());
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switch (commonUnit) {
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case eUnit_Null:
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case eUnit_Auto:
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case eUnit_None:
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case eUnit_Normal:
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case eUnit_UnparsedString:
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return false;
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case eUnit_Enumerated:
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switch (aProperty) {
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case eCSSProperty_font_stretch: {
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// just like eUnit_Integer.
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PRInt32 startInt = aStartValue.GetIntValue();
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PRInt32 endInt = aEndValue.GetIntValue();
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aDistance = NS_ABS(endInt - startInt);
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return true;
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}
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default:
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return false;
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}
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case eUnit_Visibility: {
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PRInt32 startVal =
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aStartValue.GetIntValue() == NS_STYLE_VISIBILITY_VISIBLE;
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PRInt32 endVal =
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aEndValue.GetIntValue() == NS_STYLE_VISIBILITY_VISIBLE;
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aDistance = NS_ABS(startVal - endVal);
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return true;
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}
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case eUnit_Integer: {
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PRInt32 startInt = aStartValue.GetIntValue();
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PRInt32 endInt = aEndValue.GetIntValue();
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aDistance = NS_ABS(endInt - startInt);
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return true;
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}
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case eUnit_Coord: {
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nscoord startCoord = aStartValue.GetCoordValue();
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nscoord endCoord = aEndValue.GetCoordValue();
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aDistance = fabs(double(endCoord - startCoord));
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return true;
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}
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case eUnit_Percent: {
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float startPct = aStartValue.GetPercentValue();
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float endPct = aEndValue.GetPercentValue();
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aDistance = fabs(double(endPct - startPct));
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return true;
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}
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case eUnit_Float: {
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float startFloat = aStartValue.GetFloatValue();
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float endFloat = aEndValue.GetFloatValue();
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aDistance = fabs(double(endFloat - startFloat));
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return true;
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}
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case eUnit_Color: {
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// http://www.w3.org/TR/smil-animation/#animateColorElement says
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// that we should use Euclidean RGB cube distance. However, we
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// have to extend that to RGBA. For now, we'll just use the
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// Euclidean distance in the (part of the) 4-cube of premultiplied
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// colors.
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// FIXME (spec): The CSS transitions spec doesn't say whether
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// colors are premultiplied, but things work better when they are,
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// so use premultiplication. Spec issue is still open per
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// http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
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nscolor startColor = aStartValue.GetColorValue();
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nscolor endColor = aEndValue.GetColorValue();
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// Get a color component on a 0-1 scale, which is much easier to
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// deal with when working with alpha.
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#define GET_COMPONENT(component_, color_) \
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(NS_GET_##component_(color_) * (1.0 / 255.0))
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double startA = GET_COMPONENT(A, startColor);
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double startR = GET_COMPONENT(R, startColor) * startA;
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double startG = GET_COMPONENT(G, startColor) * startA;
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double startB = GET_COMPONENT(B, startColor) * startA;
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double endA = GET_COMPONENT(A, endColor);
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double endR = GET_COMPONENT(R, endColor) * endA;
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double endG = GET_COMPONENT(G, endColor) * endA;
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double endB = GET_COMPONENT(B, endColor) * endA;
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#undef GET_COMPONENT
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double diffA = startA - endA;
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double diffR = startR - endR;
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double diffG = startG - endG;
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double diffB = startB - endB;
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aDistance = sqrt(diffA * diffA + diffR * diffR +
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diffG * diffG + diffB * diffB);
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return true;
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}
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case eUnit_Calc: {
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CalcValue v1 = ExtractCalcValue(aStartValue);
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CalcValue v2 = ExtractCalcValue(aEndValue);
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float difflen = v2.mLength - v1.mLength;
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float diffpct = v2.mPercent - v1.mPercent;
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aDistance = sqrt(difflen * difflen + diffpct * diffpct);
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return true;
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}
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case eUnit_CSSValuePair: {
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const nsCSSValuePair *pair1 = aStartValue.GetCSSValuePairValue();
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const nsCSSValuePair *pair2 = aEndValue.GetCSSValuePairValue();
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nsCSSUnit unit[2];
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unit[0] = GetCommonUnit(aProperty, pair1->mXValue.GetUnit(),
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pair2->mXValue.GetUnit());
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unit[1] = GetCommonUnit(aProperty, pair1->mYValue.GetUnit(),
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pair2->mYValue.GetUnit());
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if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
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unit[0] == eCSSUnit_URL) {
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return false;
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}
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double squareDistance = 0.0;
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static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
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&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
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};
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for (PRUint32 i = 0; i < 2; ++i) {
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nsCSSValue nsCSSValuePair::*member = pairValues[i];
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double diffsquared;
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switch (unit[i]) {
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case eCSSUnit_Pixel: {
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float diff = (pair1->*member).GetFloatValue() -
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(pair2->*member).GetFloatValue();
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diffsquared = diff * diff;
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break;
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}
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case eCSSUnit_Percent: {
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float diff = (pair1->*member).GetPercentValue() -
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(pair2->*member).GetPercentValue();
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diffsquared = diff * diff;
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break;
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}
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case eCSSUnit_Calc: {
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CalcValue v1 = ExtractCalcValue(pair1->*member);
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CalcValue v2 = ExtractCalcValue(pair2->*member);
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float difflen = v2.mLength - v1.mLength;
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float diffpct = v2.mPercent - v1.mPercent;
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diffsquared = difflen * difflen + diffpct * diffpct;
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break;
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}
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default:
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NS_ABORT_IF_FALSE(false, "unexpected unit");
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return false;
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}
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squareDistance += diffsquared;
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}
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aDistance = sqrt(squareDistance);
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return true;
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}
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case eUnit_CSSValueTriplet: {
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const nsCSSValueTriplet *triplet1 = aStartValue.GetCSSValueTripletValue();
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const nsCSSValueTriplet *triplet2 = aEndValue.GetCSSValueTripletValue();
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nsCSSUnit unit[3];
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unit[0] = GetCommonUnit(aProperty, triplet1->mXValue.GetUnit(),
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triplet2->mXValue.GetUnit());
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unit[1] = GetCommonUnit(aProperty, triplet1->mYValue.GetUnit(),
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triplet2->mYValue.GetUnit());
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unit[2] = GetCommonUnit(aProperty, triplet1->mZValue.GetUnit(),
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triplet2->mZValue.GetUnit());
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if (unit[0] == eCSSUnit_Null || unit[1] == eCSSUnit_Null ||
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unit[0] == eCSSUnit_URL) {
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return false;
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}
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double squareDistance = 0.0;
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static nsCSSValue nsCSSValueTriplet::* const pairValues[3] = {
|
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&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
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};
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for (PRUint32 i = 0; i < 3; ++i) {
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nsCSSValue nsCSSValueTriplet::*member = pairValues[i];
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double diffsquared;
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switch (unit[i]) {
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case eCSSUnit_Pixel: {
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float diff = (triplet1->*member).GetFloatValue() -
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(triplet2->*member).GetFloatValue();
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diffsquared = diff * diff;
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break;
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}
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case eCSSUnit_Percent: {
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float diff = (triplet1->*member).GetPercentValue() -
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(triplet2->*member).GetPercentValue();
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diffsquared = diff * diff;
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break;
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}
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case eCSSUnit_Calc: {
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CalcValue v1 = ExtractCalcValue(triplet1->*member);
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CalcValue v2 = ExtractCalcValue(triplet2->*member);
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float difflen = v2.mLength - v1.mLength;
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float diffpct = v2.mPercent - v1.mPercent;
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diffsquared = difflen * difflen + diffpct * diffpct;
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break;
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}
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case eCSSUnit_Null:
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break;
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default:
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NS_ABORT_IF_FALSE(false, "unexpected unit");
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return false;
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}
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squareDistance += diffsquared;
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}
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aDistance = sqrt(squareDistance);
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return true;
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}
|
|
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 (PRUint32 i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
NS_ABORT_IF_FALSE((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:
|
|
NS_ABORT_IF_FALSE(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.
|
|
Value 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();
|
|
|
|
NS_ABORT_IF_FALSE(!list1 == !list2, "lists should be same length");
|
|
while (list1) {
|
|
const nsCSSValue &val1 = list1->mValue;
|
|
const nsCSSValue &val2 = list2->mValue;
|
|
|
|
NS_ABORT_IF_FALSE(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:
|
|
NS_ABORT_IF_FALSE(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
squareDistance += diff * diff;
|
|
|
|
list1 = list1->mNext;
|
|
list2 = list2->mNext;
|
|
NS_ABORT_IF_FALSE(!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.
|
|
Value 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;
|
|
NS_ABORT_IF_FALSE(!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) {
|
|
NS_ABORT_IF_FALSE(array1->Item(i).GetUnit() == eCSSUnit_Pixel,
|
|
"unexpected unit");
|
|
NS_ABORT_IF_FALSE(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
|
|
NS_ABORT_IF_FALSE(color1.GetUnit() == color2.GetUnit() &&
|
|
inset1 == inset2,
|
|
"AddWeighted should have failed");
|
|
}
|
|
#endif
|
|
|
|
if (color1.GetUnit() != eCSSUnit_Null) {
|
|
nsStyleAnimation::Value color1Value
|
|
(color1.GetColorValue(), nsStyleAnimation::Value::ColorConstructor);
|
|
nsStyleAnimation::Value color2Value
|
|
(color2.GetColorValue(), nsStyleAnimation::Value::ColorConstructor);
|
|
double colorDistance;
|
|
|
|
#ifdef DEBUG
|
|
bool ok =
|
|
#endif
|
|
nsStyleAnimation::ComputeDistance(eCSSProperty_color,
|
|
color1Value, color2Value,
|
|
colorDistance);
|
|
NS_ABORT_IF_FALSE(ok, "should not fail");
|
|
squareDistance += colorDistance * colorDistance;
|
|
}
|
|
|
|
shadow1 = shadow1->mNext;
|
|
shadow2 = shadow2->mNext;
|
|
NS_ABORT_IF_FALSE(!shadow1 == !shadow2, "lists should be same length");
|
|
}
|
|
aDistance = sqrt(squareDistance);
|
|
return true;
|
|
}
|
|
case eUnit_Transform: {
|
|
return false;
|
|
}
|
|
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 (PRUint32 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: {
|
|
CalcValue val1 = ExtractCalcValue(v1);
|
|
CalcValue 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;
|
|
}
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(false, "Can't compute distance using the given common unit");
|
|
return false;
|
|
}
|
|
|
|
#define MAX_PACKED_COLOR_COMPONENT 255
|
|
|
|
inline PRUint8 ClampColor(double aColor)
|
|
{
|
|
if (aColor >= MAX_PACKED_COLOR_COMPONENT)
|
|
return MAX_PACKED_COLOR_COMPONENT;
|
|
if (aColor <= 0.0)
|
|
return 0;
|
|
return NSToIntRound(aColor);
|
|
}
|
|
|
|
template <typename T>
|
|
T
|
|
RestrictValue(PRUint32 aRestrictions, T aValue)
|
|
{
|
|
T result = 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:
|
|
NS_ABORT_IF_FALSE(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, PRUint32 aValueRestrictions = 0)
|
|
{
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Pixel, "unexpected unit");
|
|
NS_ABORT_IF_FALSE(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, PRUint32 aValueRestrictions = 0)
|
|
{
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
NS_ABORT_IF_FALSE(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, PRUint32 aValueRestrictions = 0)
|
|
{
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Percent, "unexpected unit");
|
|
NS_ABORT_IF_FALSE(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)
|
|
{
|
|
CalcValue v1 = ExtractCalcValue(aValue1);
|
|
CalcValue v2 = ExtractCalcValue(aValue2);
|
|
NS_ABORT_IF_FALSE(v1.mHasPercent || v2.mHasPercent,
|
|
"only used on properties that always have percent in calc");
|
|
nsRefPtr<nsCSSValue::Array> a = nsCSSValue::Array::Create(2),
|
|
acalc = nsCSSValue::Array::Create(1);
|
|
a->Item(0).SetFloatValue(aCoeff1 * v1.mLength + aCoeff2 * v2.mLength,
|
|
eCSSUnit_Pixel);
|
|
a->Item(1).SetPercentValue(aCoeff1 * v1.mPercent + aCoeff2 * v2.mPercent);
|
|
acalc->Item(0).SetArrayValue(a, eCSSUnit_Calc_Plus);
|
|
aResult.SetArrayValue(acalc, eCSSUnit_Calc);
|
|
}
|
|
|
|
static void
|
|
AddCSSValueAngle(const nsCSSValue &aValue1, double aCoeff1,
|
|
const nsCSSValue &aValue2, double aCoeff2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
aResult.SetFloatValue(aCoeff1 * aValue1.GetAngleValueInRadians() +
|
|
aCoeff2 * aValue2.GetAngleValueInRadians(),
|
|
eCSSUnit_Radian);
|
|
}
|
|
|
|
static bool
|
|
AddShadowItems(double aCoeff1, const nsCSSValue &aValue1,
|
|
double aCoeff2, const nsCSSValue &aValue2,
|
|
nsCSSValueList **&aResultTail)
|
|
{
|
|
// X, Y, Radius, Spread, Color, Inset
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
NS_ABORT_IF_FALSE(aValue2.GetUnit() == eCSSUnit_Array,
|
|
"wrong unit");
|
|
nsCSSValue::Array *array1 = aValue1.GetArrayValue();
|
|
nsCSSValue::Array *array2 = aValue2.GetArrayValue();
|
|
nsRefPtr<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) {
|
|
nsStyleAnimation::Value color1Value
|
|
(color1.GetColorValue(), nsStyleAnimation::Value::ColorConstructor);
|
|
nsStyleAnimation::Value color2Value
|
|
(color2.GetColorValue(), nsStyleAnimation::Value::ColorConstructor);
|
|
nsStyleAnimation::Value resultColorValue;
|
|
#ifdef DEBUG
|
|
bool ok =
|
|
#endif
|
|
nsStyleAnimation::AddWeighted(eCSSProperty_color, aCoeff1, color1Value,
|
|
aCoeff2, color2Value, resultColorValue);
|
|
NS_ABORT_IF_FALSE(ok, "should not fail");
|
|
resultArray->Item(4).SetColorValue(resultColorValue.GetColorValue());
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(inset1 == inset2, "should match");
|
|
resultArray->Item(5) = inset1;
|
|
|
|
nsCSSValueList *resultItem = new nsCSSValueList;
|
|
if (!resultItem) {
|
|
return false;
|
|
}
|
|
resultItem->mValue.SetArrayValue(resultArray, eCSSUnit_Array);
|
|
*aResultTail = resultItem;
|
|
aResultTail = &resultItem->mNext;
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
AddTransformTranslate(const nsCSSValue &aValue1, double aCoeff1,
|
|
const nsCSSValue &aValue2, double aCoeff2,
|
|
nsCSSValue &aResult)
|
|
{
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Percent ||
|
|
aValue1.GetUnit() == eCSSUnit_Pixel ||
|
|
aValue1.IsCalcUnit(),
|
|
"unexpected unit");
|
|
NS_ABORT_IF_FALSE(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(const nsCSSValue &aValue1, double aCoeff1,
|
|
const nsCSSValue &aValue2, double aCoeff2,
|
|
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.
|
|
NS_ABORT_IF_FALSE(aValue1.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
|
NS_ABORT_IF_FALSE(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>
|
|
AppendTransformFunction(nsCSSKeyword aTransformFunction,
|
|
nsCSSValueList**& aListTail)
|
|
{
|
|
PRUint32 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;
|
|
}
|
|
|
|
nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(nargs + 1);
|
|
arr->Item(0).SetStringValue(
|
|
NS_ConvertUTF8toUTF16(nsCSSKeywords::GetStringValue(aTransformFunction)),
|
|
eCSSUnit_Ident);
|
|
|
|
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 gfxMatrix &aMatrix, gfxPoint3D &aScale,
|
|
float aShear[3], gfxQuaternion &aRotate,
|
|
gfxPoint3D &aTranslate)
|
|
{
|
|
float A = aMatrix.xx,
|
|
B = aMatrix.yx,
|
|
C = aMatrix.xy,
|
|
D = aMatrix.yy;
|
|
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 < NS_ABS(A*D - B*C) && NS_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.x0;
|
|
aTranslate.y = aMatrix.y0;
|
|
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 gfx3DMatrix &aMatrix, gfxPoint3D &aScale,
|
|
float aShear[3], gfxQuaternion &aRotate,
|
|
gfxPoint3D &aTranslate, gfxPointH3D &aPerspective)
|
|
{
|
|
gfx3DMatrix 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.
|
|
*/
|
|
gfx3DMatrix perspective = local;
|
|
gfxPointH3D 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 = gfxPointH3D(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 */ gfx3DMatrix
|
|
nsStyleAnimation::InterpolateTransformMatrix(const gfx3DMatrix &aMatrix1,
|
|
const gfx3DMatrix &aMatrix2,
|
|
double aProgress)
|
|
{
|
|
// Decompose both matrices
|
|
|
|
// TODO: What do we do if one of these returns false (singular matrix)
|
|
|
|
gfxPoint3D scale1(1, 1, 1), translate1;
|
|
gfxPointH3D perspective1(0, 0, 0, 1);
|
|
gfxQuaternion rotate1;
|
|
float shear1[3] = { 0.0f, 0.0f, 0.0f};
|
|
|
|
gfxPoint3D scale2(1, 1, 1), translate2;
|
|
gfxPointH3D perspective2(0, 0, 0, 1);
|
|
gfxQuaternion rotate2;
|
|
float shear2[3] = { 0.0f, 0.0f, 0.0f};
|
|
|
|
gfxMatrix 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
|
|
gfx3DMatrix result;
|
|
|
|
gfxPointH3D perspective =
|
|
InterpolateNumerically(perspective1, perspective2, aProgress);
|
|
result.SetTransposedVector(3, perspective);
|
|
|
|
gfxPoint3D translate =
|
|
InterpolateNumerically(translate1, translate2, aProgress);
|
|
result.Translate(translate);
|
|
|
|
gfxQuaternion q3 = rotate1.Slerp(rotate2, aProgress);
|
|
gfx3DMatrix 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);
|
|
}
|
|
|
|
gfxPoint3D scale =
|
|
InterpolateNumerically(scale1, scale2, aProgress);
|
|
if (scale != gfxPoint3D(1.0, 1.0, 1.0)) {
|
|
result.Scale(scale.x, scale.y, scale.z);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddDifferentTransformLists(const nsCSSValueList* aList1, double aCoeff1,
|
|
const nsCSSValueList* aList2, double aCoeff2)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
nsRefPtr<nsCSSValue::Array> arr;
|
|
arr = 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)
|
|
{
|
|
if (func1 == func2) {
|
|
return true;
|
|
}
|
|
|
|
if ((func1 == eCSSKeyword_rotatez && func2 == eCSSKeyword_rotate) ||
|
|
(func1 == eCSSKeyword_rotate && func2 == eCSSKeyword_rotatez)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static nsCSSValueList*
|
|
AddTransformLists(const nsCSSValueList* aList1, double aCoeff1,
|
|
const nsCSSValueList* aList2, double aCoeff2)
|
|
{
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
|
|
do {
|
|
const nsCSSValue::Array *a1 = aList1->mValue.GetArrayValue(),
|
|
*a2 = aList2->mValue.GetArrayValue();
|
|
NS_ABORT_IF_FALSE(TransformFunctionsMatch(nsStyleTransformMatrix::TransformFunctionOf(a1),
|
|
nsStyleTransformMatrix::TransformFunctionOf(a2)),
|
|
"transform function mismatch");
|
|
|
|
nsCSSKeyword tfunc = nsStyleTransformMatrix::TransformFunctionOf(a1);
|
|
nsRefPtr<nsCSSValue::Array> arr;
|
|
if (tfunc != eCSSKeyword_matrix &&
|
|
tfunc != eCSSKeyword_matrix3d &&
|
|
tfunc != eCSSKeyword_interpolatematrix &&
|
|
tfunc != eCSSKeyword_rotate3d &&
|
|
tfunc != eCSSKeyword_perspective) {
|
|
arr = AppendTransformFunction(tfunc, resultTail);
|
|
}
|
|
|
|
switch (tfunc) {
|
|
case eCSSKeyword_translate: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2 || a1->Count() == 3,
|
|
"unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2 || a2->Count() == 3,
|
|
"unexpected count");
|
|
|
|
// 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);
|
|
// Add Y component of translation.
|
|
AddTransformTranslate(a1->Count() == 3 ? a1->Item(2) : zero,
|
|
aCoeff1,
|
|
a2->Count() == 3 ? a2->Item(2) : zero,
|
|
aCoeff2,
|
|
arr->Item(2));
|
|
|
|
// Add X component of translation (which can be merged with case
|
|
// below in non-DEBUG).
|
|
AddTransformTranslate(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
break;
|
|
}
|
|
case eCSSKeyword_translatex:
|
|
case eCSSKeyword_translatey:
|
|
case eCSSKeyword_translatez: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2, "unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2, "unexpected count");
|
|
AddTransformTranslate(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
break;
|
|
}
|
|
case eCSSKeyword_translate3d: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 4, "unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 4, "unexpected count");
|
|
AddTransformTranslate(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
AddTransformTranslate(a1->Item(2), aCoeff1, a2->Item(2), aCoeff2,
|
|
arr->Item(2));
|
|
AddTransformTranslate(a1->Item(3), aCoeff1, a2->Item(3), aCoeff2,
|
|
arr->Item(3));
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2 || a1->Count() == 3,
|
|
"unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2 || a2->Count() == 3,
|
|
"unexpected count");
|
|
|
|
// This is different from skew() and translate(), since an
|
|
// omitted second parameter repeats the first rather than being
|
|
// zero.
|
|
// Add Y component of scale.
|
|
AddTransformScale(a1->Count() == 3 ? a1->Item(2) : a1->Item(1),
|
|
aCoeff1,
|
|
a2->Count() == 3 ? a2->Item(2) : a2->Item(1),
|
|
aCoeff2,
|
|
arr->Item(2));
|
|
|
|
// Add X component of scale (which can be merged with case below
|
|
// in non-DEBUG).
|
|
AddTransformScale(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_scalex:
|
|
case eCSSKeyword_scaley:
|
|
case eCSSKeyword_scalez: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2, "unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2, "unexpected count");
|
|
|
|
AddTransformScale(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_scale3d: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 4, "unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 4, "unexpected count");
|
|
|
|
AddTransformScale(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
AddTransformScale(a1->Item(2), aCoeff1, a2->Item(2), aCoeff2,
|
|
arr->Item(2));
|
|
AddTransformScale(a1->Item(3), aCoeff1, a2->Item(3), aCoeff2,
|
|
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: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2 || a1->Count() == 3,
|
|
"unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2 || a2->Count() == 3,
|
|
"unexpected count");
|
|
|
|
nsCSSValue zero(0.0f, eCSSUnit_Radian);
|
|
// Add Y component of skew.
|
|
AddCSSValueAngle(a1->Count() == 3 ? a1->Item(2) : zero,
|
|
aCoeff1,
|
|
a2->Count() == 3 ? a2->Item(2) : zero,
|
|
aCoeff2,
|
|
arr->Item(2));
|
|
|
|
// Add X component of skew (which can be merged with case below
|
|
// in non-DEBUG).
|
|
AddCSSValueAngle(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_skewx:
|
|
case eCSSKeyword_skewy:
|
|
case eCSSKeyword_rotate:
|
|
case eCSSKeyword_rotatex:
|
|
case eCSSKeyword_rotatey:
|
|
case eCSSKeyword_rotatez: {
|
|
NS_ABORT_IF_FALSE(a1->Count() == 2, "unexpected count");
|
|
NS_ABORT_IF_FALSE(a2->Count() == 2, "unexpected count");
|
|
|
|
AddCSSValueAngle(a1->Item(1), aCoeff1, a2->Item(1), aCoeff2,
|
|
arr->Item(1));
|
|
|
|
break;
|
|
}
|
|
case eCSSKeyword_matrix:
|
|
case eCSSKeyword_matrix3d:
|
|
case eCSSKeyword_interpolatematrix:
|
|
case eCSSKeyword_rotate3d:
|
|
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(&tempList1, aCoeff1, &tempList1, aCoeff2);
|
|
} else {
|
|
*resultTail =
|
|
AddDifferentTransformLists(&tempList1, aCoeff1, &tempList2, aCoeff2);
|
|
}
|
|
|
|
while ((*resultTail)->mNext) {
|
|
resultTail = &(*resultTail)->mNext;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
NS_ABORT_IF_FALSE(false, "unknown transform function");
|
|
}
|
|
|
|
aList1 = aList1->mNext;
|
|
aList2 = aList2->mNext;
|
|
} while (aList1);
|
|
NS_ABORT_IF_FALSE(!aList2, "list length mismatch");
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::AddWeighted(nsCSSProperty aProperty,
|
|
double aCoeff1, const Value& aValue1,
|
|
double aCoeff2, const Value& aValue2,
|
|
Value& 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.
|
|
PRInt32 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: {
|
|
PRInt32 val1 = aValue1.GetIntValue() == NS_STYLE_VISIBILITY_VISIBLE;
|
|
PRInt32 val2 = aValue2.GetIntValue() == NS_STYLE_VISIBILITY_VISIBLE;
|
|
double interp = aCoeff1 * val1 + aCoeff2 * val2;
|
|
PRInt32 result = interp > 0.0 ? NS_STYLE_VISIBILITY_VISIBLE
|
|
: NS_STYLE_VISIBILITY_HIDDEN;
|
|
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
|
|
PRInt32 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;
|
|
PRUint8 Ares = NSToIntRound(Aresf * 255.0);
|
|
PRUint8 Rres = ClampColor((R1 * aCoeff1 + R2 * aCoeff2) * factor);
|
|
PRUint8 Gres = ClampColor((G1 * aCoeff1 + G2 * aCoeff2) * factor);
|
|
PRUint8 Bres = ClampColor((B1 * aCoeff1 + B2 * aCoeff2) * factor);
|
|
resultColor = NS_RGBA(Rres, Gres, Bres, Ares);
|
|
}
|
|
aResultValue.SetColorValue(resultColor);
|
|
return true;
|
|
}
|
|
case eUnit_Calc: {
|
|
CalcValue v1 = ExtractCalcValue(aValue1);
|
|
CalcValue 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_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) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValuePair> result(new nsCSSValuePair);
|
|
static nsCSSValue nsCSSValuePair::* const pairValues[2] = {
|
|
&nsCSSValuePair::mXValue, &nsCSSValuePair::mYValue
|
|
};
|
|
PRUint32 restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (PRUint32 i = 0; i < 2; ++i) {
|
|
nsCSSValue nsCSSValuePair::*member = pairValues[i];
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, pair1->*member, aCoeff2, pair2->*member,
|
|
result->*member, restrictions);
|
|
break;
|
|
case eCSSUnit_Percent:
|
|
AddCSSValuePercent(aCoeff1, pair1->*member,
|
|
aCoeff2, pair2->*member,
|
|
result->*member, restrictions);
|
|
break;
|
|
case eCSSUnit_Calc:
|
|
AddCSSValueCanonicalCalc(aCoeff1, pair1->*member,
|
|
aCoeff2, pair2->*member,
|
|
result->*member);
|
|
break;
|
|
default:
|
|
NS_ABORT_IF_FALSE(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValuePairValue(result.forget(),
|
|
eUnit_CSSValuePair);
|
|
return true;
|
|
}
|
|
case eUnit_CSSValueTriplet: {
|
|
nsCSSValueTriplet triplet1(*aValue1.GetCSSValueTripletValue());
|
|
nsCSSValueTriplet triplet2(*aValue2.GetCSSValueTripletValue());
|
|
|
|
if (triplet1.mZValue.GetUnit() == eCSSUnit_Null) {
|
|
triplet1.mZValue.SetFloatValue(0.0, eCSSUnit_Pixel);
|
|
}
|
|
if (triplet2.mZValue.GetUnit() == eCSSUnit_Null) {
|
|
triplet2.mZValue.SetFloatValue(0.0, eCSSUnit_Pixel);
|
|
}
|
|
|
|
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[0] == eCSSUnit_Null || unit[0] == eCSSUnit_URL) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoPtr<nsCSSValueTriplet> result(new nsCSSValueTriplet);
|
|
static nsCSSValue nsCSSValueTriplet::* const tripletValues[3] = {
|
|
&nsCSSValueTriplet::mXValue, &nsCSSValueTriplet::mYValue, &nsCSSValueTriplet::mZValue
|
|
};
|
|
PRUint32 restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (PRUint32 i = 0; i < 3; ++i) {
|
|
nsCSSValue nsCSSValueTriplet::*member = tripletValues[i];
|
|
switch (unit[i]) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, &triplet1->*member, aCoeff2, &triplet2->*member,
|
|
result->*member, restrictions);
|
|
break;
|
|
case eCSSUnit_Percent:
|
|
AddCSSValuePercent(aCoeff1, &triplet1->*member,
|
|
aCoeff2, &triplet2->*member,
|
|
result->*member, restrictions);
|
|
break;
|
|
case eCSSUnit_Calc:
|
|
AddCSSValueCanonicalCalc(aCoeff1, &triplet1->*member,
|
|
aCoeff2, &triplet2->*member,
|
|
result->*member);
|
|
break;
|
|
default:
|
|
NS_ABORT_IF_FALSE(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (result->mZValue.GetUnit() == eCSSUnit_Pixel &&
|
|
result->mZValue.GetFloatValue() == 0.0f) {
|
|
result->mZValue.Reset();
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueTripletValue(result.forget(),
|
|
eUnit_CSSValueTriplet);
|
|
return true;
|
|
}
|
|
case eUnit_CSSRect: {
|
|
NS_ABORT_IF_FALSE(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 (PRUint32 i = 0; i < ArrayLength(nsCSSRect::sides); ++i) {
|
|
nsCSSValue nsCSSRect::*member = nsCSSRect::sides[i];
|
|
NS_ABORT_IF_FALSE((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:
|
|
NS_ABORT_IF_FALSE(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();
|
|
|
|
PRUint32 len1 = 0, len2 = 0;
|
|
for (const nsCSSValueList *v = list1; v; v = v->mNext) {
|
|
++len1;
|
|
}
|
|
for (const nsCSSValueList *v = list2; v; v = v->mNext) {
|
|
++len2;
|
|
}
|
|
NS_ABORT_IF_FALSE(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.
|
|
NS_ABORT_IF_FALSE(
|
|
(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 (PRUint32 i = 0, i_end = lcm(len1, len2); i != i_end; ++i) {
|
|
const nsCSSValue &v1 = list1->mValue;
|
|
const nsCSSValue &v2 = list2->mValue;
|
|
NS_ABORT_IF_FALSE(v1.GetUnit() == eCSSUnit_Number ||
|
|
v1.GetUnit() == eCSSUnit_Percent, "unexpected");
|
|
NS_ABORT_IF_FALSE(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;
|
|
if (!item) {
|
|
return false;
|
|
}
|
|
*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_Transform: {
|
|
const nsCSSValueList *list1 = aValue1.GetCSSValueListValue();
|
|
const nsCSSValueList *list2 = aValue2.GetCSSValueListValue();
|
|
|
|
// 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(list2, 0, list2, aCoeff2);
|
|
}
|
|
} else {
|
|
if (list2->mValue.GetUnit() == eCSSUnit_None) {
|
|
result = AddTransformLists(list1, 0, list1, aCoeff1);
|
|
} 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(list1, aCoeff1, list2, aCoeff2);
|
|
} else {
|
|
result = AddDifferentTransformLists(list1, aCoeff1, list2, aCoeff2);
|
|
}
|
|
}
|
|
}
|
|
|
|
aResultValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Transform);
|
|
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;
|
|
if (!item) {
|
|
return false;
|
|
}
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
static nsCSSValue nsCSSValuePairList::* const pairListValues[] = {
|
|
&nsCSSValuePairList::mXValue,
|
|
&nsCSSValuePairList::mYValue,
|
|
};
|
|
PRUint32 restrictions = nsCSSProps::ValueRestrictions(aProperty);
|
|
for (PRUint32 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;
|
|
}
|
|
switch (unit) {
|
|
case eCSSUnit_Pixel:
|
|
AddCSSValuePixel(aCoeff1, v1, aCoeff2, v2, vr, restrictions);
|
|
break;
|
|
case eCSSUnit_Percent:
|
|
AddCSSValuePercent(aCoeff1, v1, aCoeff2, v2, vr, restrictions);
|
|
break;
|
|
case eCSSUnit_Calc:
|
|
AddCSSValueCanonicalCalc(aCoeff1, v1, aCoeff2, v2, vr);
|
|
break;
|
|
default:
|
|
if (v1 != v2) {
|
|
return false;
|
|
}
|
|
vr = v1;
|
|
break;
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(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
|
|
nsAutoPtr<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());
|
|
|
|
if (aUseSVGMode) {
|
|
parser.SetSVGMode(true);
|
|
}
|
|
|
|
nsCSSProperty propertyToCheck = nsCSSProps::IsShorthand(aProperty) ?
|
|
nsCSSProps::SubpropertyEntryFor(aProperty)[0] : aProperty;
|
|
|
|
// Get a parser, parse the property, and check for CSS parsing errors.
|
|
// If any of these steps fails, we bail out and delete the declaration.
|
|
if (NS_FAILED(parser.ParseProperty(aProperty, aSpecifiedValue,
|
|
doc->GetDocumentURI(), baseURI,
|
|
aTargetElement->NodePrincipal(),
|
|
declaration, &changed, false)) ||
|
|
// check whether property parsed without CSS parsing errors
|
|
!declaration->HasNonImportantValueFor(propertyToCheck)) {
|
|
NS_WARNING("failure in BuildStyleRule");
|
|
return nsnull;
|
|
}
|
|
|
|
nsRefPtr<css::StyleRule> rule = new css::StyleRule(nsnull, declaration.forget());
|
|
return rule.forget();
|
|
}
|
|
|
|
inline
|
|
already_AddRefed<nsStyleContext>
|
|
LookupStyleContext(dom::Element* aElement)
|
|
{
|
|
nsIDocument* doc = aElement->GetCurrentDoc();
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (!shell) {
|
|
return nsnull;
|
|
}
|
|
return nsComputedDOMStyle::GetStyleContextForElement(aElement, nsnull, shell);
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::ComputeValue(nsCSSProperty aProperty,
|
|
dom::Element* aTargetElement,
|
|
const nsAString& aSpecifiedValue,
|
|
bool aUseSVGMode,
|
|
Value& aComputedValue,
|
|
bool* aIsContextSensitive)
|
|
{
|
|
NS_ABORT_IF_FALSE(aTargetElement, "null target element");
|
|
NS_ABORT_IF_FALSE(aTargetElement->GetCurrentDoc(),
|
|
"we should only be able to actively animate nodes that "
|
|
"are in a document");
|
|
|
|
nsCSSProperty propToParse =
|
|
nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_REPORT_OTHER_NAME)
|
|
? nsCSSProps::OtherNameFor(aProperty) : aProperty;
|
|
|
|
// Parse specified value into a temporary css::StyleRule
|
|
nsRefPtr<css::StyleRule> styleRule =
|
|
BuildStyleRule(propToParse, 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;
|
|
}
|
|
|
|
// Look up style context for our target element
|
|
nsRefPtr<nsStyleContext> styleContext = LookupStyleContext(aTargetElement);
|
|
if (!styleContext) {
|
|
return false;
|
|
}
|
|
nsStyleSet* styleSet = styleContext->PresContext()->StyleSet();
|
|
|
|
nsRefPtr<nsStyleContext> tmpStyleContext;
|
|
if (aIsContextSensitive) {
|
|
nsCOMArray<nsIStyleRule> ruleArray;
|
|
ruleArray.AppendObject(styleSet->InitialStyleRule());
|
|
ruleArray.AppendObject(styleRule);
|
|
styleRule->RuleMatched();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(styleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
|
|
// Force walk of rule tree
|
|
nsStyleStructID sid = nsCSSProps::kSIDTable[aProperty];
|
|
tmpStyleContext->GetStyleData(sid);
|
|
|
|
// If the rule node will have cached style data if the value is not
|
|
// context-sensitive. So if there's nothing cached, it's not context
|
|
// sensitive.
|
|
*aIsContextSensitive =
|
|
!tmpStyleContext->GetRuleNode()->NodeHasCachedData(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;
|
|
ruleArray.AppendObject(styleRule);
|
|
styleRule->RuleMatched();
|
|
tmpStyleContext =
|
|
styleSet->ResolveStyleByAddingRules(styleContext, ruleArray);
|
|
if (!tmpStyleContext) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Extract computed value of our property from the temporary style rule
|
|
return ExtractComputedValue(aProperty, tmpStyleContext, aComputedValue);
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::UncomputeValue(nsCSSProperty aProperty,
|
|
nsPresContext* aPresContext,
|
|
const Value& aComputedValue,
|
|
nsCSSValue& aSpecifiedValue)
|
|
{
|
|
NS_ABORT_IF_FALSE(aPresContext, "null pres context");
|
|
|
|
switch (aComputedValue.GetUnit()) {
|
|
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: {
|
|
nsCSSValue *val = aComputedValue.GetCSSValueValue();
|
|
NS_ABORT_IF_FALSE(val->GetUnit() == eCSSUnit_Calc, "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_Transform:
|
|
aSpecifiedValue.
|
|
SetDependentListValue(aComputedValue.GetCSSValueListValue());
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
aSpecifiedValue.
|
|
SetDependentPairListValue(aComputedValue.GetCSSValuePairListValue());
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::UncomputeValue(nsCSSProperty aProperty,
|
|
nsPresContext* aPresContext,
|
|
const Value& aComputedValue,
|
|
nsAString& aSpecifiedValue)
|
|
{
|
|
NS_ABORT_IF_FALSE(aPresContext, "null pres context");
|
|
aSpecifiedValue.Truncate(); // Clear outparam, if it's not already empty
|
|
|
|
if (aComputedValue.GetUnit() == eUnit_UnparsedString) {
|
|
aComputedValue.GetStringValue(aSpecifiedValue);
|
|
return true;
|
|
}
|
|
nsCSSValue val;
|
|
if (!nsStyleAnimation::UncomputeValue(aProperty, aPresContext,
|
|
aComputedValue, val)) {
|
|
return false;
|
|
}
|
|
|
|
val.AppendToString(aProperty, aSpecifiedValue);
|
|
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, nsStyleAnimation::Value& aComputedValue)
|
|
{
|
|
nscolor color;
|
|
bool foreground;
|
|
static_cast<const nsStyleBorder*>(aStyleBorder)->
|
|
GetBorderColor(aSide, color, foreground);
|
|
if (foreground) {
|
|
// FIXME: should add test for this
|
|
color = aStyleContext->GetStyleColor()->mColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
}
|
|
|
|
static bool
|
|
StyleCoordToValue(const nsStyleCoord& aCoord, nsStyleAnimation::Value& 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(),
|
|
nsStyleAnimation::eUnit_Enumerated);
|
|
break;
|
|
case eStyleUnit_Integer:
|
|
aValue.SetIntValue(aCoord.GetIntValue(),
|
|
nsStyleAnimation::eUnit_Integer);
|
|
break;
|
|
case eStyleUnit_Calc: {
|
|
nsAutoPtr<nsCSSValue> val(new nsCSSValue);
|
|
SetCalcValue(aCoord.GetCalcValue(), *val);
|
|
aValue.SetAndAdoptCSSValueValue(val.forget(),
|
|
nsStyleAnimation::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_Percent:
|
|
aCSSValue.SetPercentValue(aCoord.GetPercentValue());
|
|
break;
|
|
case eStyleUnit_Calc:
|
|
SetCalcValue(aCoord.GetCalcValue(), aCSSValue);
|
|
break;
|
|
default:
|
|
NS_ABORT_IF_FALSE(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* 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()) {
|
|
bool canStoreInRuleTree = true;
|
|
nsRuleNode::ComputedCalc c =
|
|
nsRuleNode::SpecifiedCalcToComputedCalc(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
canStoreInRuleTree);
|
|
nsStyleCoord::Calc 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();
|
|
nsRefPtr<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) {
|
|
bool canStoreInRuleTree = true;
|
|
nscoord len = nsRuleNode::CalcLength(aInput, aStyleContext,
|
|
aStyleContext->PresContext(),
|
|
canStoreInRuleTree);
|
|
aOutput.SetFloatValue(nsPresContext::AppUnitsToFloatCSSPixels(len),
|
|
eCSSUnit_Pixel);
|
|
} else {
|
|
aOutput = aInput;
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::ExtractComputedValue(nsCSSProperty aProperty,
|
|
nsStyleContext* aStyleContext,
|
|
Value& aComputedValue)
|
|
{
|
|
NS_ABORT_IF_FALSE(0 <= aProperty &&
|
|
aProperty < eCSSProperty_COUNT_no_shorthands,
|
|
"bad property");
|
|
const void* styleStruct =
|
|
aStyleContext->GetStyleData(nsCSSProps::kSIDTable[aProperty]);
|
|
ptrdiff_t ssOffset = nsCSSProps::kStyleStructOffsetTable[aProperty];
|
|
nsStyleAnimType animType = nsCSSProps::kAnimTypeTable[aProperty];
|
|
NS_ABORT_IF_FALSE(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_value, left)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_right_width_value, right)
|
|
BORDER_WIDTH_CASE(eCSSProperty_border_top_width, top)
|
|
#undef BORDER_WIDTH_CASE
|
|
|
|
case eCSSProperty__moz_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_value:
|
|
ExtractBorderColor(aStyleContext, styleStruct, NS_SIDE_LEFT,
|
|
aComputedValue);
|
|
break;
|
|
case eCSSProperty_border_right_color_value:
|
|
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;
|
|
#ifdef GFX_HAS_INVERT
|
|
// This isn't right. And note that outline drawing itself
|
|
// goes through this codepath via GetVisitedDependentColor.
|
|
styleOutline->GetOutlineColor(color);
|
|
#else
|
|
if (!styleOutline->GetOutlineColor(color))
|
|
color = aStyleContext->GetStyleColor()->mColor;
|
|
#endif
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty__moz_column_rule_color: {
|
|
const nsStyleColumn *styleColumn =
|
|
static_cast<const nsStyleColumn*>(styleStruct);
|
|
nscolor color;
|
|
if (styleColumn->mColumnRuleColorIsForeground) {
|
|
color = aStyleContext->GetStyleColor()->mColor;
|
|
} else {
|
|
color = styleColumn->mColumnRuleColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty__moz_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_text_decoration_color: {
|
|
const nsStyleTextReset *styleTextReset =
|
|
static_cast<const nsStyleTextReset*>(styleStruct);
|
|
nscolor color;
|
|
bool isForeground;
|
|
styleTextReset->GetDecorationColor(color, isForeground);
|
|
if (isForeground) {
|
|
color = aStyleContext->GetStyleColor()->mColor;
|
|
}
|
|
aComputedValue.SetColorValue(color);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_text_decoration_style: {
|
|
PRUint8 decorationStyle =
|
|
static_cast<const nsStyleTextReset*>(styleStruct)->
|
|
GetDecorationStyle();
|
|
aComputedValue.SetIntValue(decorationStyle, eUnit_Enumerated);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_border_spacing: {
|
|
const nsStyleTableBorder *styleTableBorder =
|
|
static_cast<const nsStyleTableBorder*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePair> pair(new nsCSSValuePair);
|
|
if (!pair) {
|
|
return false;
|
|
}
|
|
nscoordToCSSValue(styleTableBorder->mBorderSpacingX, pair->mXValue);
|
|
nscoordToCSSValue(styleTableBorder->mBorderSpacingY, pair->mYValue);
|
|
aComputedValue.SetAndAdoptCSSValuePairValue(pair.forget(),
|
|
eUnit_CSSValuePair);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty__moz_transform_origin: {
|
|
const nsStyleDisplay *styleDisplay =
|
|
static_cast<const nsStyleDisplay*>(styleStruct);
|
|
nsAutoPtr<nsCSSValueTriplet> triplet(new nsCSSValueTriplet);
|
|
if (!triplet ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[0],
|
|
triplet->mXValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[1],
|
|
triplet->mYValue) ||
|
|
!StyleCoordToCSSValue(styleDisplay->mTransformOrigin[2],
|
|
triplet->mZValue)) {
|
|
return false;
|
|
}
|
|
if (triplet->mZValue.GetUnit() == eCSSUnit_Pixel &&
|
|
triplet->mZValue.GetFloatValue() == 0.0f) {
|
|
triplet->mZValue.Reset();
|
|
}
|
|
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 (!pair ||
|
|
!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);
|
|
NS_ABORT_IF_FALSE((svg->mStrokeDasharray != nsnull) ==
|
|
(svg->mStrokeDasharrayLength != 0),
|
|
"pointer/length mismatch");
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
if (svg->mStrokeDasharray) {
|
|
NS_ABORT_IF_FALSE(svg->mStrokeDasharrayLength > 0,
|
|
"non-null list should have positive length");
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (PRUint32 i = 0, i_end = svg->mStrokeDasharrayLength;
|
|
i != i_end; ++i) {
|
|
nsCSSValueList *item = new nsCSSValueList;
|
|
if (!item) {
|
|
return false;
|
|
}
|
|
*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:
|
|
NS_ABORT_IF_FALSE(false, "unexpected unit");
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
result = new nsCSSValueList;
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
result->mValue.SetNoneValue();
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Dasharray);
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_font_stretch: {
|
|
PRInt16 stretch =
|
|
static_cast<const nsStyleFont*>(styleStruct)->mFont.stretch;
|
|
PR_STATIC_ASSERT(NS_STYLE_FONT_STRETCH_ULTRA_CONDENSED == -4);
|
|
PR_STATIC_ASSERT(NS_STYLE_FONT_STRETCH_ULTRA_EXPANDED == 4);
|
|
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: {
|
|
PRUint16 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_background_position: {
|
|
const nsStyleBackground *bg =
|
|
static_cast<const nsStyleBackground*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePairList> result;
|
|
nsCSSValuePairList **resultTail = getter_Transfers(result);
|
|
NS_ABORT_IF_FALSE(bg->mPositionCount > 0, "unexpected count");
|
|
for (PRUint32 i = 0, i_end = bg->mPositionCount; i != i_end; ++i) {
|
|
nsCSSValuePairList *item = new nsCSSValuePairList;
|
|
*resultTail = item;
|
|
resultTail = &item->mNext;
|
|
|
|
const nsStyleBackground::Position &pos = bg->mLayers[i].mPosition;
|
|
// XXXbz is there a good reason we can't just
|
|
// SetCalcValue(&pos.mXPosition, item->mXValue) here?
|
|
if (!pos.mXPosition.mHasPercent) {
|
|
NS_ABORT_IF_FALSE(pos.mXPosition.mPercent == 0.0f,
|
|
"Shouldn't have mPercent!");
|
|
nscoordToCSSValue(pos.mXPosition.mLength, item->mXValue);
|
|
} else if (pos.mXPosition.mLength == 0) {
|
|
item->mXValue.SetPercentValue(pos.mXPosition.mPercent);
|
|
} else {
|
|
SetCalcValue(&pos.mXPosition, item->mXValue);
|
|
}
|
|
if (!pos.mYPosition.mHasPercent) {
|
|
NS_ABORT_IF_FALSE(pos.mYPosition.mPercent == 0.0f,
|
|
"Shouldn't have mPercent!");
|
|
nscoordToCSSValue(pos.mYPosition.mLength, item->mYValue);
|
|
} else if (pos.mYPosition.mLength == 0) {
|
|
item->mYValue.SetPercentValue(pos.mYPosition.mPercent);
|
|
} else {
|
|
SetCalcValue(&pos.mYPosition, item->mYValue);
|
|
}
|
|
}
|
|
|
|
aComputedValue.SetAndAdoptCSSValuePairListValue(result.forget());
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_background_size: {
|
|
const nsStyleBackground *bg =
|
|
static_cast<const nsStyleBackground*>(styleStruct);
|
|
nsAutoPtr<nsCSSValuePairList> result;
|
|
nsCSSValuePairList **resultTail = getter_Transfers(result);
|
|
NS_ABORT_IF_FALSE(bg->mSizeCount > 0, "unexpected count");
|
|
for (PRUint32 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) {
|
|
NS_ABORT_IF_FALSE(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) {
|
|
NS_ABORT_IF_FALSE(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__moz_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;
|
|
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.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Transform);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
NS_ABORT_IF_FALSE(false, "missing property implementation");
|
|
return false;
|
|
};
|
|
return true;
|
|
case eStyleAnimType_Coord:
|
|
return StyleCoordToValue(*static_cast<const nsStyleCoord*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset)), aComputedValue);
|
|
case eStyleAnimType_Sides_Top:
|
|
case eStyleAnimType_Sides_Right:
|
|
case eStyleAnimType_Sides_Bottom:
|
|
case eStyleAnimType_Sides_Left: {
|
|
PR_STATIC_ASSERT(0 == NS_SIDE_TOP);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Sides_Right - eStyleAnimType_Sides_Top
|
|
== NS_SIDE_RIGHT);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Sides_Bottom - eStyleAnimType_Sides_Top
|
|
== NS_SIDE_BOTTOM);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Sides_Left - eStyleAnimType_Sides_Top
|
|
== NS_SIDE_LEFT);
|
|
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: {
|
|
PR_STATIC_ASSERT(0 == NS_CORNER_TOP_LEFT);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Corner_TopRight -
|
|
eStyleAnimType_Corner_TopLeft
|
|
== NS_CORNER_TOP_RIGHT);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Corner_BottomRight -
|
|
eStyleAnimType_Corner_TopLeft
|
|
== NS_CORNER_BOTTOM_RIGHT);
|
|
PR_STATIC_ASSERT(eStyleAnimType_Corner_BottomLeft -
|
|
eStyleAnimType_Corner_TopLeft
|
|
== NS_CORNER_BOTTOM_LEFT);
|
|
const nsStyleCorners *corners = static_cast<const nsStyleCorners*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
PRUint8 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 (!pair ||
|
|
!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 PRUint8*>(
|
|
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() == 0.0f) {
|
|
// In nsStyleFont, we set mFont.sizeAdjust to 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);
|
|
nsRefPtr<nsStringBuffer> uriAsStringBuffer =
|
|
GetURIAsUtf16StringBuffer(paint.mPaint.mPaintServer);
|
|
NS_ENSURE_TRUE(!!uriAsStringBuffer, false);
|
|
nsIDocument* doc = aStyleContext->PresContext()->Document();
|
|
nsRefPtr<nsCSSValue::URL> url =
|
|
new nsCSSValue::URL(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;
|
|
}
|
|
NS_ABORT_IF_FALSE(paint.mType == eStyleSVGPaintType_None,
|
|
"Unexpected SVG paint type");
|
|
aComputedValue.SetNoneValue();
|
|
return true;
|
|
}
|
|
case eStyleAnimType_Shadow: {
|
|
const nsCSSShadowArray *shadowArray =
|
|
*static_cast<const nsRefPtr<nsCSSShadowArray>*>(
|
|
StyleDataAtOffset(styleStruct, ssOffset));
|
|
if (!shadowArray) {
|
|
aComputedValue.SetAndAdoptCSSValueListValue(nsnull, eUnit_Shadow);
|
|
return true;
|
|
}
|
|
nsAutoPtr<nsCSSValueList> result;
|
|
nsCSSValueList **resultTail = getter_Transfers(result);
|
|
for (PRUint32 i = 0, i_end = shadowArray->Length(); i < i_end; ++i) {
|
|
const nsCSSShadowItem *shadow = shadowArray->ShadowAt(i);
|
|
// X, Y, Radius, Spread, Color, Inset
|
|
nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(6);
|
|
nscoordToCSSValue(shadow->mXOffset, arr->Item(0));
|
|
nscoordToCSSValue(shadow->mYOffset, arr->Item(1));
|
|
nscoordToCSSValue(shadow->mRadius, arr->Item(2));
|
|
// NOTE: This code sometimes stores mSpread: 0 even when
|
|
// the parser would be required to leave it null.
|
|
nscoordToCSSValue(shadow->mSpread, arr->Item(3));
|
|
if (shadow->mHasColor) {
|
|
arr->Item(4).SetColorValue(shadow->mColor);
|
|
}
|
|
if (shadow->mInset) {
|
|
arr->Item(5).SetIntValue(NS_STYLE_BOX_SHADOW_INSET,
|
|
eCSSUnit_Enumerated);
|
|
}
|
|
|
|
nsCSSValueList *resultItem = new nsCSSValueList;
|
|
if (!resultItem) {
|
|
return false;
|
|
}
|
|
resultItem->mValue.SetArrayValue(arr, eCSSUnit_Array);
|
|
*resultTail = resultItem;
|
|
resultTail = &resultItem->mNext;
|
|
}
|
|
aComputedValue.SetAndAdoptCSSValueListValue(result.forget(),
|
|
eUnit_Shadow);
|
|
return true;
|
|
}
|
|
case eStyleAnimType_None:
|
|
NS_NOTREACHED("shouldn't use on non-animatable properties");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsStyleAnimation::Value::Value(PRInt32 aInt, Unit aUnit,
|
|
IntegerConstructorType)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
nsStyleAnimation::Value::Value(nscoord aLength, CoordConstructorType)
|
|
{
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
nsStyleAnimation::Value::Value(float aPercent, PercentConstructorType)
|
|
{
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
}
|
|
|
|
nsStyleAnimation::Value::Value(float aFloat, FloatConstructorType)
|
|
{
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
}
|
|
|
|
nsStyleAnimation::Value::Value(nscolor aColor, ColorConstructorType)
|
|
{
|
|
mUnit = eUnit_Color;
|
|
mValue.mColor = aColor;
|
|
}
|
|
|
|
nsStyleAnimation::Value&
|
|
nsStyleAnimation::Value::operator=(const Value& aOther)
|
|
{
|
|
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;
|
|
break;
|
|
case eUnit_Color:
|
|
mValue.mColor = aOther.mValue.mColor;
|
|
break;
|
|
case eUnit_Calc:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mCSSValue, "values may not be null");
|
|
mValue.mCSSValue = new nsCSSValue(*aOther.mValue.mCSSValue);
|
|
if (!mValue.mCSSValue) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
break;
|
|
case eUnit_CSSValuePair:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mCSSValuePair,
|
|
"value pairs may not be null");
|
|
mValue.mCSSValuePair = new nsCSSValuePair(*aOther.mValue.mCSSValuePair);
|
|
if (!mValue.mCSSValuePair) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
break;
|
|
case eUnit_CSSValueTriplet:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mCSSValueTriplet,
|
|
"value triplets may not be null");
|
|
mValue.mCSSValueTriplet = new nsCSSValueTriplet(*aOther.mValue.mCSSValueTriplet);
|
|
if (!mValue.mCSSValueTriplet) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
break;
|
|
case eUnit_CSSRect:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mCSSRect, "rects may not be null");
|
|
mValue.mCSSRect = new nsCSSRect(*aOther.mValue.mCSSRect);
|
|
if (!mValue.mCSSRect) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
break;
|
|
case eUnit_Dasharray:
|
|
case eUnit_Shadow:
|
|
case eUnit_Transform:
|
|
NS_ABORT_IF_FALSE(mUnit == eUnit_Shadow || aOther.mValue.mCSSValueList,
|
|
"value lists other than shadows may not be null");
|
|
if (aOther.mValue.mCSSValueList) {
|
|
mValue.mCSSValueList = aOther.mValue.mCSSValueList->Clone();
|
|
if (!mValue.mCSSValueList) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
} else {
|
|
mValue.mCSSValueList = nsnull;
|
|
}
|
|
break;
|
|
case eUnit_CSSValuePairList:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mCSSValuePairList,
|
|
"value pair lists may not be null");
|
|
mValue.mCSSValuePairList = aOther.mValue.mCSSValuePairList->Clone();
|
|
if (!mValue.mCSSValuePairList) {
|
|
mUnit = eUnit_Null;
|
|
}
|
|
break;
|
|
case eUnit_UnparsedString:
|
|
NS_ABORT_IF_FALSE(aOther.mValue.mString, "expecting non-null string");
|
|
mValue.mString = aOther.mValue.mString;
|
|
mValue.mString->AddRef();
|
|
break;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetNormalValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Normal;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAutoValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Auto;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetNoneValue()
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_None;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetIntValue(PRInt32 aInt, Unit aUnit)
|
|
{
|
|
NS_ASSERTION(IsIntUnit(aUnit), "unit must be of integer type");
|
|
FreeValue();
|
|
mUnit = aUnit;
|
|
mValue.mInt = aInt;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetCoordValue(nscoord aLength)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Coord;
|
|
mValue.mCoord = aLength;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetPercentValue(float aPercent)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Percent;
|
|
mValue.mFloat = aPercent;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetFloatValue(float aFloat)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Float;
|
|
mValue.mFloat = aFloat;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetColorValue(nscolor aColor)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_Color;
|
|
mValue.mColor = aColor;
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetUnparsedStringValue(const nsString& aString)
|
|
{
|
|
FreeValue();
|
|
mUnit = eUnit_UnparsedString;
|
|
mValue.mString = nsCSSValue::BufferFromString(aString).get();
|
|
if (NS_UNLIKELY(!mValue.mString)) {
|
|
// not much we can do here; just make sure that our promise of a
|
|
// non-null mValue.mString holds for string units.
|
|
mUnit = eUnit_Null;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSValueValue(nsCSSValue *aValue,
|
|
Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(IsCSSValueUnit(aUnit), "bad unit");
|
|
NS_ABORT_IF_FALSE(aValue != nsnull, "values may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValue = aValue; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSValuePairValue(
|
|
nsCSSValuePair *aValuePair, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(IsCSSValuePairUnit(aUnit), "bad unit");
|
|
NS_ABORT_IF_FALSE(aValuePair != nsnull, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValuePair = aValuePair; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSValueTripletValue(
|
|
nsCSSValueTriplet *aValueTriplet, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(IsCSSValueTripletUnit(aUnit), "bad unit");
|
|
NS_ABORT_IF_FALSE(aValueTriplet != nsnull, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueTriplet = aValueTriplet; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSRectValue(nsCSSRect *aRect, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(IsCSSRectUnit(aUnit), "bad unit");
|
|
NS_ABORT_IF_FALSE(aRect != nsnull, "value pairs may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSRect = aRect; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSValueListValue(
|
|
nsCSSValueList *aValueList, Unit aUnit)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(IsCSSValueListUnit(aUnit), "bad unit");
|
|
NS_ABORT_IF_FALSE(aUnit != eUnit_Dasharray || aValueList != nsnull,
|
|
"dasharrays may not be null");
|
|
mUnit = aUnit;
|
|
mValue.mCSSValueList = aValueList; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::SetAndAdoptCSSValuePairListValue(
|
|
nsCSSValuePairList *aValuePairList)
|
|
{
|
|
FreeValue();
|
|
NS_ABORT_IF_FALSE(aValuePairList, "may not be null");
|
|
mUnit = eUnit_CSSValuePairList;
|
|
mValue.mCSSValuePairList = aValuePairList; // take ownership
|
|
}
|
|
|
|
void
|
|
nsStyleAnimation::Value::FreeValue()
|
|
{
|
|
if (IsCSSValueUnit(mUnit)) {
|
|
delete mValue.mCSSValue;
|
|
} else if (IsCSSValueListUnit(mUnit)) {
|
|
delete mValue.mCSSValueList;
|
|
} 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)) {
|
|
NS_ABORT_IF_FALSE(mValue.mString, "expecting non-null string");
|
|
mValue.mString->Release();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsStyleAnimation::Value::operator==(const Value& 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:
|
|
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_Transform:
|
|
return *mValue.mCSSValueList == *aOther.mValue.mCSSValueList;
|
|
case eUnit_CSSValuePairList:
|
|
return *mValue.mCSSValuePairList == *aOther.mValue.mCSSValuePairList;
|
|
case eUnit_UnparsedString:
|
|
return (NS_strcmp(GetStringBufferValue(),
|
|
aOther.GetStringBufferValue()) == 0);
|
|
}
|
|
|
|
NS_NOTREACHED("incomplete case");
|
|
return false;
|
|
}
|
|
|