| /* |
| * 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, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * 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) |
| : AnimatableValue(TypeNumber) |
| , m_number(number) |
| , m_unitType(unitType) |
| , m_isCalc(false) |
| , m_cachedCSSPrimitiveValue(cssPrimitiveValue) |
| { |
| ASSERT(m_unitType != UnitTypeInvalid); |
| } |
| AnimatableNumber(PassRefPtr<CSSCalcExpressionNode> calcExpression, CSSPrimitiveValue* cssPrimitiveValue) |
| : AnimatableValue(TypeNumber) |
| , m_isCalc(true) |
| , m_calcExpression(calcExpression) |
| , m_cachedCSSPrimitiveValue(cssPrimitiveValue) |
| { |
| ASSERT(m_calcExpression); |
| } |
| |
| 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 |