gecko-dev/layout/style/StyleAnimationValue.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 15:12:37 +04:00
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Utilities for animation of computed style values */
#ifndef mozilla_StyleAnimationValue_h_
#define mozilla_StyleAnimationValue_h_
#include "mozilla/gfx/MatrixFwd.h"
Bug 1260655 - Allow StyleAnimationValue::UncomputeValue to produce values whose storage is independent of the passed-in computed value; r=heycam When we go to switch CSS Animations over to using KeyframeEffectReadOnly::SetFrames we will need a way to represent any filled-in from/to values as nsCSSValue objects. These objects are built from the current computed style. We currently use StyleAnimationValue::ExtractComputedValue for this which returns a StyleAnimationValue. In order to convert this to an nsCSSValue we can use StyleAnimationValue::UncomputeValue. However, in some cases, the nsCSSValue objects returned by that method are dependent on the passed-in StyleAnimationValue object. This patch adds an overload to UncomputeValue that takes an rvalue StyleAnimationValue reference and produces an nsCSSValue that is independent of the StyleAnimationValue through a combination of copying data and transferring ownership of data. This patch also adjusts the return value for the case of filter and shadow lists when the list is empty so that we return a none value in this case. These are the only list types which are allowed to have a null list value. Not only does this produce the correct result when these values are serialized (the initial value for 'filter', 'text-shadow', and 'box-shadow' is 'none') it also means that UncomputeValue should never return an nsCSSValue whose unit is null which is important because when we later pass that value to BuildStyleRule it will treat a null nsCSSValue as an error case (specifically, "longhand failed to parse"). MozReview-Commit-ID: 4RoCn39ntiJ
2016-03-30 06:39:59 +03:00
#include "mozilla/UniquePtr.h"
#include "nsStringFwd.h"
#include "nsStringBuffer.h"
#include "nsCoord.h"
#include "nsColor.h"
#include "nsCSSProps.h"
#include "nsCSSValue.h"
class nsIFrame;
class nsStyleContext;
class gfx3DMatrix;
namespace mozilla {
namespace css {
class StyleRule;
} // namespace css
namespace dom {
class Element;
} // namespace dom
enum class CSSPseudoElementType : uint8_t;
struct PropertyStyleAnimationValuePair;
/**
* Utility class to handle animated style values
*/
class StyleAnimationValue {
public:
// Mathematical methods
// --------------------
/**
* Adds |aCount| copies of |aValueToAdd| to |aDest|. The result of this
* addition is stored in aDest.
*
* Note that if |aCount| is 0, then |aDest| will be unchanged. Also, if
* this method fails, then |aDest| will be unchanged.
*
* @param aDest The value to add to.
* @param aValueToAdd The value to add.
* @param aCount The number of times to add aValueToAdd.
* @return true on success, false on failure.
*/
static bool Add(nsCSSProperty aProperty, StyleAnimationValue& aDest,
const StyleAnimationValue& aValueToAdd, uint32_t aCount) {
return AddWeighted(aProperty, 1.0, aDest, aCount, aValueToAdd, aDest);
}
/**
* Calculates a measure of 'distance' between two values.
*
* This measure of Distance is guaranteed to be proportional to
* portions passed to Interpolate, Add, or AddWeighted. However, for
* some types of StyleAnimationValue it may not produce sensible results
* for paced animation.
*
* If this method succeeds, the returned distance value is guaranteed to be
* non-negative.
*
* @param aStartValue The start of the interval for which the distance
* should be calculated.
* @param aEndValue The end of the interval for which the distance
* should be calculated.
* @param aDistance The result of the calculation.
* @return true on success, false on failure.
*/
static bool ComputeDistance(nsCSSProperty aProperty,
const StyleAnimationValue& aStartValue,
const StyleAnimationValue& aEndValue,
double& aDistance);
/**
* Calculates an interpolated value that is the specified |aPortion| between
* the two given values.
*
* This really just does the following calculation:
* aResultValue = (1.0 - aPortion) * aStartValue + aPortion * aEndValue
*
* @param aStartValue The value defining the start of the interval of
* interpolation.
* @param aEndValue The value defining the end of the interval of
* interpolation.
* @param aPortion A number in the range [0.0, 1.0] defining the
* distance of the interpolated value in the interval.
* @param [out] aResultValue The resulting interpolated value.
* @return true on success, false on failure.
*/
static bool Interpolate(nsCSSProperty aProperty,
const StyleAnimationValue& aStartValue,
const StyleAnimationValue& aEndValue,
double aPortion,
StyleAnimationValue& aResultValue) {
return AddWeighted(aProperty, 1.0 - aPortion, aStartValue,
aPortion, aEndValue, aResultValue);
}
/**
* Does the calculation:
* aResultValue = aCoeff1 * aValue1 + aCoeff2 * aValue2
*
* @param [out] aResultValue The resulting interpolated value. May be
* the same as aValue1 or aValue2.
* @return true on success, false on failure.
*
* NOTE: Current callers always pass aCoeff1 and aCoeff2 >= 0. They
* are currently permitted to be negative; however, if, as we add
* support more value types types, we find that this causes
* difficulty, we might change this to restrict them to being
* positive.
*/
static bool AddWeighted(nsCSSProperty aProperty,
double aCoeff1, const StyleAnimationValue& aValue1,
double aCoeff2, const StyleAnimationValue& aValue2,
StyleAnimationValue& aResultValue);
// Type-conversion methods
// -----------------------
/**
* Creates a computed value for the given specified value
* (property ID + string). A style context is needed in case the
* specified value depends on inherited style or on the values of other
* properties.
*
* @param aProperty The property whose value we're computing.
* @param aTargetElement The content node to which our computed value is
* applicable. For pseudo-elements, this is the parent
* element to which the pseudo is attached, not the
* generated content node.
* @param aStyleContext The style context used to compute values from the
* specified value. For pseudo-elements, this should
* be the style context corresponding to the pseudo
* element.
* @param aSpecifiedValue The specified value, from which we'll build our
* computed value.
* @param aUseSVGMode A flag to indicate whether we should parse
* |aSpecifiedValue| in SVG mode.
* @param [out] aComputedValue The resulting computed value.
* @param [out] aIsContextSensitive
* Set to true if |aSpecifiedValue| may produce
* a different |aComputedValue| depending on other CSS
* properties on |aTargetElement| or its ancestors.
* false otherwise.
* Note that the operation of this method is
* significantly faster when |aIsContextSensitive| is
* nullptr.
* @return true on success, false on failure.
*/
static bool ComputeValue(nsCSSProperty aProperty,
mozilla::dom::Element* aTargetElement,
nsStyleContext* aStyleContext,
const nsAString& aSpecifiedValue,
bool aUseSVGMode,
StyleAnimationValue& aComputedValue,
bool* aIsContextSensitive = nullptr);
/**
* Like ComputeValue, but returns an array of StyleAnimationValues.
*
* On success, when aProperty is a longhand, aResult will have a single
* value in it. When aProperty is a shorthand, aResult will be filled with
* values for all of aProperty's longhand components. aEnabledState
* is used to filter the longhand components that will be appended
* to aResult. On failure, aResult might still have partial results
* in it.
*/
static bool ComputeValues(nsCSSProperty aProperty,
nsCSSProps::EnabledState aEnabledState,
mozilla::dom::Element* aTargetElement,
nsStyleContext* aStyleContext,
const nsAString& aSpecifiedValue,
bool aUseSVGMode,
nsTArray<PropertyStyleAnimationValuePair>& aResult);
/**
* A variant on ComputeValues that takes an nsCSSValue as the specified
* value. Only longhand properties are supported.
*/
static bool ComputeValues(nsCSSProperty aProperty,
nsCSSProps::EnabledState aEnabledState,
mozilla::dom::Element* aTargetElement,
nsStyleContext* aStyleContext,
const nsCSSValue& aSpecifiedValue,
bool aUseSVGMode,
nsTArray<PropertyStyleAnimationValuePair>& aResult);
/**
* Creates a specified value for the given computed value.
*
Bug 1260655 - Allow StyleAnimationValue::UncomputeValue to produce values whose storage is independent of the passed-in computed value; r=heycam When we go to switch CSS Animations over to using KeyframeEffectReadOnly::SetFrames we will need a way to represent any filled-in from/to values as nsCSSValue objects. These objects are built from the current computed style. We currently use StyleAnimationValue::ExtractComputedValue for this which returns a StyleAnimationValue. In order to convert this to an nsCSSValue we can use StyleAnimationValue::UncomputeValue. However, in some cases, the nsCSSValue objects returned by that method are dependent on the passed-in StyleAnimationValue object. This patch adds an overload to UncomputeValue that takes an rvalue StyleAnimationValue reference and produces an nsCSSValue that is independent of the StyleAnimationValue through a combination of copying data and transferring ownership of data. This patch also adjusts the return value for the case of filter and shadow lists when the list is empty so that we return a none value in this case. These are the only list types which are allowed to have a null list value. Not only does this produce the correct result when these values are serialized (the initial value for 'filter', 'text-shadow', and 'box-shadow' is 'none') it also means that UncomputeValue should never return an nsCSSValue whose unit is null which is important because when we later pass that value to BuildStyleRule it will treat a null nsCSSValue as an error case (specifically, "longhand failed to parse"). MozReview-Commit-ID: 4RoCn39ntiJ
2016-03-30 06:39:59 +03:00
* The first two overloads fill in an nsCSSValue object; the third
* produces a string. For the overload that takes a const
* StyleAnimationValue& reference, the nsCSSValue result may depend on
* objects owned by the |aComputedValue| object, so users of that variant
* must keep |aComputedValue| alive longer than |aSpecifiedValue|.
Bug 1260655 - Allow StyleAnimationValue::UncomputeValue to produce values whose storage is independent of the passed-in computed value; r=heycam When we go to switch CSS Animations over to using KeyframeEffectReadOnly::SetFrames we will need a way to represent any filled-in from/to values as nsCSSValue objects. These objects are built from the current computed style. We currently use StyleAnimationValue::ExtractComputedValue for this which returns a StyleAnimationValue. In order to convert this to an nsCSSValue we can use StyleAnimationValue::UncomputeValue. However, in some cases, the nsCSSValue objects returned by that method are dependent on the passed-in StyleAnimationValue object. This patch adds an overload to UncomputeValue that takes an rvalue StyleAnimationValue reference and produces an nsCSSValue that is independent of the StyleAnimationValue through a combination of copying data and transferring ownership of data. This patch also adjusts the return value for the case of filter and shadow lists when the list is empty so that we return a none value in this case. These are the only list types which are allowed to have a null list value. Not only does this produce the correct result when these values are serialized (the initial value for 'filter', 'text-shadow', and 'box-shadow' is 'none') it also means that UncomputeValue should never return an nsCSSValue whose unit is null which is important because when we later pass that value to BuildStyleRule it will treat a null nsCSSValue as an error case (specifically, "longhand failed to parse"). MozReview-Commit-ID: 4RoCn39ntiJ
2016-03-30 06:39:59 +03:00
* The overload that takes an rvalue StyleAnimationValue reference
* transfers ownership for some resources such that the |aComputedValue|
* does not depend on the lifetime of |aSpecifiedValue|.
*
* @param aProperty The property whose value we're uncomputing.
* @param aComputedValue The computed value to be converted.
* @param [out] aSpecifiedValue The resulting specified value.
* @return true on success, false on failure.
*/
static bool UncomputeValue(nsCSSProperty aProperty,
const StyleAnimationValue& aComputedValue,
nsCSSValue& aSpecifiedValue);
Bug 1260655 - Allow StyleAnimationValue::UncomputeValue to produce values whose storage is independent of the passed-in computed value; r=heycam When we go to switch CSS Animations over to using KeyframeEffectReadOnly::SetFrames we will need a way to represent any filled-in from/to values as nsCSSValue objects. These objects are built from the current computed style. We currently use StyleAnimationValue::ExtractComputedValue for this which returns a StyleAnimationValue. In order to convert this to an nsCSSValue we can use StyleAnimationValue::UncomputeValue. However, in some cases, the nsCSSValue objects returned by that method are dependent on the passed-in StyleAnimationValue object. This patch adds an overload to UncomputeValue that takes an rvalue StyleAnimationValue reference and produces an nsCSSValue that is independent of the StyleAnimationValue through a combination of copying data and transferring ownership of data. This patch also adjusts the return value for the case of filter and shadow lists when the list is empty so that we return a none value in this case. These are the only list types which are allowed to have a null list value. Not only does this produce the correct result when these values are serialized (the initial value for 'filter', 'text-shadow', and 'box-shadow' is 'none') it also means that UncomputeValue should never return an nsCSSValue whose unit is null which is important because when we later pass that value to BuildStyleRule it will treat a null nsCSSValue as an error case (specifically, "longhand failed to parse"). MozReview-Commit-ID: 4RoCn39ntiJ
2016-03-30 06:39:59 +03:00
static bool UncomputeValue(nsCSSProperty aProperty,
StyleAnimationValue&& aComputedValue,
nsCSSValue& aSpecifiedValue);
static bool UncomputeValue(nsCSSProperty aProperty,
const StyleAnimationValue& aComputedValue,
nsAString& aSpecifiedValue);
/**
* Gets the computed value for the given property from the given style
* context.
*
* Obtaining the computed value allows us to animate properties when the
* content author has specified a value like "inherit" or "initial" or some
* other keyword that isn't directly interpolatable, but which *computes* to
* something interpolatable.
*
* @param aProperty The property whose value we're looking up.
* @param aStyleContext The style context to check for the computed value.
* @param [out] aComputedValue The resulting computed value.
* @return true on success, false on failure.
*/
static bool ExtractComputedValue(nsCSSProperty aProperty,
nsStyleContext* aStyleContext,
StyleAnimationValue& aComputedValue);
/**
* Interpolates between 2 matrices by decomposing them.
*
* @param aMatrix1 First matrix, using CSS pixel units.
* @param aMatrix2 Second matrix, using CSS pixel units.
* @param aProgress Interpolation value in the range [0.0, 1.0]
*/
static gfx::Matrix4x4 InterpolateTransformMatrix(const gfx::Matrix4x4 &aMatrix1,
const gfx::Matrix4x4 &aMatrix2,
double aProgress);
static already_AddRefed<nsCSSValue::Array>
AppendTransformFunction(nsCSSKeyword aTransformFunction,
nsCSSValueList**& aListTail);
/**
* The types and values for the values that we extract and animate.
*/
enum Unit {
eUnit_Null, // not initialized
eUnit_Normal,
eUnit_Auto,
eUnit_None,
eUnit_Enumerated,
eUnit_Visibility, // special case for transitions (which converts
// Enumerated to Visibility as needed)
eUnit_Integer,
eUnit_Coord,
eUnit_Percent,
eUnit_Float,
eUnit_Color,
eUnit_CurrentColor,
eUnit_Calc, // nsCSSValue* (never null), always with a single
// calc() expression that's either length or length+percent
eUnit_ObjectPosition, // nsCSSValue* (never null), always with a
// 4-entry nsCSSValue::Array
eUnit_URL, // nsCSSValue* (never null), always with a css::URLValue
eUnit_CSSValuePair, // nsCSSValuePair* (never null)
eUnit_CSSValueTriplet, // nsCSSValueTriplet* (never null)
eUnit_CSSRect, // nsCSSRect* (never null)
eUnit_Dasharray, // nsCSSValueList* (never null)
eUnit_Shadow, // nsCSSValueList* (may be null)
eUnit_Shape, // nsCSSValue::Array* (never null)
eUnit_Filter, // nsCSSValueList* (may be null)
eUnit_Transform, // nsCSSValueList* (never null)
eUnit_BackgroundPosition, // nsCSSValueList* (never null)
eUnit_CSSValuePairList, // nsCSSValuePairList* (never null)
eUnit_UnparsedString // nsStringBuffer* (never null)
};
private:
Unit mUnit;
union {
int32_t mInt;
nscoord mCoord;
float mFloat;
nscolor mColor;
nsCSSValue* mCSSValue;
nsCSSValuePair* mCSSValuePair;
nsCSSValueTriplet* mCSSValueTriplet;
nsCSSRect* mCSSRect;
nsCSSValue::Array* mCSSValueArray;
nsCSSValueList* mCSSValueList;
nsCSSValueSharedList* mCSSValueSharedList;
nsCSSValuePairList* mCSSValuePairList;
nsStringBuffer* mString;
} mValue;
public:
Unit GetUnit() const {
NS_ASSERTION(mUnit != eUnit_Null, "uninitialized");
return mUnit;
}
// Accessor to let us verify assumptions about presence of null unit,
// without tripping the assertion in GetUnit().
bool IsNull() const {
return mUnit == eUnit_Null;
}
int32_t GetIntValue() const {
NS_ASSERTION(IsIntUnit(mUnit), "unit mismatch");
return mValue.mInt;
}
nscoord GetCoordValue() const {
NS_ASSERTION(mUnit == eUnit_Coord, "unit mismatch");
return mValue.mCoord;
}
float GetPercentValue() const {
NS_ASSERTION(mUnit == eUnit_Percent, "unit mismatch");
return mValue.mFloat;
}
float GetFloatValue() const {
NS_ASSERTION(mUnit == eUnit_Float, "unit mismatch");
return mValue.mFloat;
}
nscolor GetColorValue() const {
NS_ASSERTION(mUnit == eUnit_Color, "unit mismatch");
return mValue.mColor;
}
nsCSSValue* GetCSSValueValue() const {
NS_ASSERTION(IsCSSValueUnit(mUnit), "unit mismatch");
return mValue.mCSSValue;
}
nsCSSValuePair* GetCSSValuePairValue() const {
NS_ASSERTION(IsCSSValuePairUnit(mUnit), "unit mismatch");
return mValue.mCSSValuePair;
}
nsCSSValueTriplet* GetCSSValueTripletValue() const {
NS_ASSERTION(IsCSSValueTripletUnit(mUnit), "unit mismatch");
return mValue.mCSSValueTriplet;
}
nsCSSRect* GetCSSRectValue() const {
NS_ASSERTION(IsCSSRectUnit(mUnit), "unit mismatch");
return mValue.mCSSRect;
}
nsCSSValue::Array* GetCSSValueArrayValue() const {
NS_ASSERTION(IsCSSValueArrayUnit(mUnit), "unit mismatch");
return mValue.mCSSValueArray;
}
nsCSSValueList* GetCSSValueListValue() const {
NS_ASSERTION(IsCSSValueListUnit(mUnit), "unit mismatch");
return mValue.mCSSValueList;
}
nsCSSValueSharedList* GetCSSValueSharedListValue() const {
NS_ASSERTION(IsCSSValueSharedListValue(mUnit), "unit mismatch");
return mValue.mCSSValueSharedList;
}
nsCSSValuePairList* GetCSSValuePairListValue() const {
NS_ASSERTION(IsCSSValuePairListUnit(mUnit), "unit mismatch");
return mValue.mCSSValuePairList;
}
const char16_t* GetStringBufferValue() const {
NS_ASSERTION(IsStringUnit(mUnit), "unit mismatch");
return GetBufferValue(mValue.mString);
}
void GetStringValue(nsAString& aBuffer) const {
NS_ASSERTION(IsStringUnit(mUnit), "unit mismatch");
aBuffer.Truncate();
uint32_t len = NS_strlen(GetBufferValue(mValue.mString));
mValue.mString->ToString(len, aBuffer);
}
/// @return the scale for this value, calculated with reference to @aForFrame.
gfxSize GetScaleValue(const nsIFrame* aForFrame) const;
Bug 1260655 - Allow StyleAnimationValue::UncomputeValue to produce values whose storage is independent of the passed-in computed value; r=heycam When we go to switch CSS Animations over to using KeyframeEffectReadOnly::SetFrames we will need a way to represent any filled-in from/to values as nsCSSValue objects. These objects are built from the current computed style. We currently use StyleAnimationValue::ExtractComputedValue for this which returns a StyleAnimationValue. In order to convert this to an nsCSSValue we can use StyleAnimationValue::UncomputeValue. However, in some cases, the nsCSSValue objects returned by that method are dependent on the passed-in StyleAnimationValue object. This patch adds an overload to UncomputeValue that takes an rvalue StyleAnimationValue reference and produces an nsCSSValue that is independent of the StyleAnimationValue through a combination of copying data and transferring ownership of data. This patch also adjusts the return value for the case of filter and shadow lists when the list is empty so that we return a none value in this case. These are the only list types which are allowed to have a null list value. Not only does this produce the correct result when these values are serialized (the initial value for 'filter', 'text-shadow', and 'box-shadow' is 'none') it also means that UncomputeValue should never return an nsCSSValue whose unit is null which is important because when we later pass that value to BuildStyleRule it will treat a null nsCSSValue as an error case (specifically, "longhand failed to parse"). MozReview-Commit-ID: 4RoCn39ntiJ
2016-03-30 06:39:59 +03:00
UniquePtr<nsCSSValueList> TakeCSSValueListValue() {
nsCSSValueList* list = GetCSSValueListValue();
mValue.mCSSValueList = nullptr;
mUnit = eUnit_Null;
return UniquePtr<nsCSSValueList>(list);
}
UniquePtr<nsCSSValuePairList> TakeCSSValuePairListValue() {
nsCSSValuePairList* list = GetCSSValuePairListValue();
mValue.mCSSValuePairList = nullptr;
mUnit = eUnit_Null;
return UniquePtr<nsCSSValuePairList>(list);
}
explicit StyleAnimationValue(Unit aUnit = eUnit_Null) : mUnit(aUnit) {
NS_ASSERTION(aUnit == eUnit_Null || aUnit == eUnit_Normal ||
aUnit == eUnit_Auto || aUnit == eUnit_None,
"must be valueless unit");
}
StyleAnimationValue(const StyleAnimationValue& aOther)
: mUnit(eUnit_Null) { *this = aOther; }
StyleAnimationValue(StyleAnimationValue&& aOther)
: mUnit(aOther.mUnit)
, mValue(aOther.mValue)
{
aOther.mUnit = eUnit_Null;
}
enum IntegerConstructorType { IntegerConstructor };
StyleAnimationValue(int32_t aInt, Unit aUnit, IntegerConstructorType);
enum CoordConstructorType { CoordConstructor };
StyleAnimationValue(nscoord aLength, CoordConstructorType);
enum PercentConstructorType { PercentConstructor };
StyleAnimationValue(float aPercent, PercentConstructorType);
enum FloatConstructorType { FloatConstructor };
StyleAnimationValue(float aFloat, FloatConstructorType);
enum ColorConstructorType { ColorConstructor };
StyleAnimationValue(nscolor aColor, ColorConstructorType);
~StyleAnimationValue() { FreeValue(); }
void SetNormalValue();
void SetAutoValue();
void SetNoneValue();
void SetIntValue(int32_t aInt, Unit aUnit);
void SetCoordValue(nscoord aCoord);
void SetPercentValue(float aPercent);
void SetFloatValue(float aFloat);
void SetColorValue(nscolor aColor);
void SetCurrentColorValue();
void SetUnparsedStringValue(const nsString& aString);
// These setters take ownership of |aValue|, and are therefore named
// "SetAndAdopt*".
void SetAndAdoptCSSValueValue(nsCSSValue *aValue, Unit aUnit);
void SetAndAdoptCSSValuePairValue(nsCSSValuePair *aValue, Unit aUnit);
void SetAndAdoptCSSValueTripletValue(nsCSSValueTriplet *aValue, Unit aUnit);
void SetAndAdoptCSSRectValue(nsCSSRect *aValue, Unit aUnit);
void SetAndAdoptCSSValueArrayValue(nsCSSValue::Array* aValue, Unit aUnit);
void SetAndAdoptCSSValueListValue(nsCSSValueList *aValue, Unit aUnit);
void SetAndAdoptCSSValuePairListValue(nsCSSValuePairList *aValue);
void SetTransformValue(nsCSSValueSharedList* aList);
StyleAnimationValue& operator=(const StyleAnimationValue& aOther);
bool operator==(const StyleAnimationValue& aOther) const;
bool operator!=(const StyleAnimationValue& aOther) const
{ return !(*this == aOther); }
private:
void FreeValue();
static const char16_t* GetBufferValue(nsStringBuffer* aBuffer) {
return static_cast<char16_t*>(aBuffer->Data());
}
static bool IsIntUnit(Unit aUnit) {
return aUnit == eUnit_Enumerated || aUnit == eUnit_Visibility ||
aUnit == eUnit_Integer;
}
static bool IsCSSValueUnit(Unit aUnit) {
return aUnit == eUnit_Calc ||
aUnit == eUnit_ObjectPosition ||
aUnit == eUnit_URL;
}
static bool IsCSSValuePairUnit(Unit aUnit) {
return aUnit == eUnit_CSSValuePair;
}
static bool IsCSSValueTripletUnit(Unit aUnit) {
return aUnit == eUnit_CSSValueTriplet;
}
static bool IsCSSRectUnit(Unit aUnit) {
return aUnit == eUnit_CSSRect;
}
static bool IsCSSValueArrayUnit(Unit aUnit) {
return aUnit == eUnit_Shape;
}
static bool IsCSSValueListUnit(Unit aUnit) {
return aUnit == eUnit_Dasharray || aUnit == eUnit_Filter ||
aUnit == eUnit_Shadow ||
aUnit == eUnit_BackgroundPosition;
}
static bool IsCSSValueSharedListValue(Unit aUnit) {
return aUnit == eUnit_Transform;
}
static bool IsCSSValuePairListUnit(Unit aUnit) {
return aUnit == eUnit_CSSValuePairList;
}
static bool IsStringUnit(Unit aUnit) {
return aUnit == eUnit_UnparsedString;
}
};
struct PropertyStyleAnimationValuePair
{
nsCSSProperty mProperty;
StyleAnimationValue mValue;
};
} // namespace mozilla
#endif