Web Animations CSS: Split AnimatableNumber into AnimatableDouble and AnimatableLength

Source/core/animation/AnimatableNumber.h

-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef AnimatableNumber_h
-#define AnimatableNumber_h
-
-#include "core/animation/AnimatableValue.h"
-#include "core/css/CSSCalculationValue.h"
-#include "core/css/CSSPrimitiveValue.h"
-
-namespace WebCore {
-
-enum NumberRange {
-    AllValues,
-    NonNegativeValues,
-};
-
-// Handles animation of CSSPrimitiveValues that can be represented by doubles including CSSCalcValue.
-// See primitiveUnitToNumberType() for the list of supported units (with the exception of calc).
-// If created from a CSSPrimitiveValue this class will cache it to be returned in toCSSValue().
-class AnimatableNumber : public AnimatableValue {
-public:
-    enum NumberUnitType {
-        UnitTypeNumber,
-        UnitTypeLength,
-        UnitTypeFontSize,
-        UnitTypeFontXSize,
-        UnitTypeRootFontSize,
-        UnitTypePercentage,
-        UnitTypeViewportWidth,
-        UnitTypeViewportHeight,
-        UnitTypeViewportMin,
-        UnitTypeViewportMax,
-        UnitTypeTime,
-        UnitTypeAngle,
-        UnitTypeFrequency,
-        UnitTypeResolution,
-        UnitTypeInvalid,
-    };
-
-    virtual ~AnimatableNumber() { }
-    static bool canCreateFrom(const CSSValue*);
-    static PassRefPtr<AnimatableNumber> create(CSSValue*);
-    static PassRefPtr<AnimatableNumber> create(double number, NumberUnitType unitType, CSSPrimitiveValue* cssPrimitiveValue = 0)
-    {
-        return adoptRef(new AnimatableNumber(number, unitType, cssPrimitiveValue));
-    }
-    PassRefPtr<CSSValue> toCSSValue(NumberRange = AllValues) const;
-    double toDouble() const;
-    Length toLength(const RenderStyle* currStyle, const RenderStyle* rootStyle, double zoom, NumberRange = AllValues) const;
-
-protected:
-    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;
-    virtual PassRefPtr<AnimatableValue> addWith(const AnimatableValue*) const OVERRIDE;
-
-private:
-    AnimatableNumber(double number, NumberUnitType unitType, CSSPrimitiveValue* cssPrimitiveValue)
-        : m_number(number)
-        , m_unitType(unitType)
-        , m_isCalc(false)
-        , m_cachedCSSPrimitiveValue(cssPrimitiveValue)
-    {
-        ASSERT(m_unitType != UnitTypeInvalid);
-    }
-    AnimatableNumber(PassRefPtr<CSSCalcExpressionNode> calcExpression, CSSPrimitiveValue* cssPrimitiveValue)
-        : m_isCalc(true)
-        , m_calcExpression(calcExpression)
-        , m_cachedCSSPrimitiveValue(cssPrimitiveValue)
-    {
-        ASSERT(m_calcExpression);
-    }
-    virtual AnimatableType type() const OVERRIDE { return TypeNumber; }
-
-    static PassRefPtr<AnimatableNumber> create(PassRefPtr<CSSCalcExpressionNode> calcExpression, CSSPrimitiveValue* cssPrimitiveValue = 0)
-    {
-        return adoptRef(new AnimatableNumber(calcExpression, cssPrimitiveValue));
-    }
-    static PassRefPtr<AnimatableNumber> create(const AnimatableNumber* leftAddend, const AnimatableNumber* rightAddend);
-
-    PassRefPtr<CSSPrimitiveValue> toCSSPrimitiveValue(NumberRange) const;
-    PassRefPtr<CSSCalcExpressionNode> toCSSCalcExpressionNode() const;
-
-    PassRefPtr<AnimatableNumber> scale(double) const;
-    double clampedNumber(NumberRange range) const
-    {
-        ASSERT(!m_isCalc);
-        return (range == NonNegativeValues && m_number <= 0) ? 0 : m_number;
-    }
-    static NumberUnitType primitiveUnitToNumberType(unsigned short primitiveUnit);
-    static unsigned short numberTypeToPrimitiveUnit(NumberUnitType numberType);
-
-    double m_number;
-    NumberUnitType m_unitType;
-
-    bool m_isCalc;
-    RefPtr<CSSCalcExpressionNode> m_calcExpression;
-
-    mutable RefPtr<CSSPrimitiveValue> m_cachedCSSPrimitiveValue;
-};
-
-inline const AnimatableNumber* toAnimatableNumber(const AnimatableValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value && value->isNumber());
-    return static_cast<const AnimatableNumber*>(value);
-}
-
-} // namespace WebCore
-
-#endif // AnimatableNumber_h