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/*
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* Copyright (C) 2008 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CSSGradientValue_h
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#define CSSGradientValue_h
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#include "CSSImageGeneratorValue.h"
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#include "CSSPrimitiveValue.h"
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#include <wtf/RefPtr.h>
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#include <wtf/Vector.h>
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namespace WebCore {
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class FloatPoint;
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class Gradient;
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enum CSSGradientType { CSSLinearGradient, CSSRadialGradient };
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struct CSSGradientColorStop {
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CSSGradientColorStop()
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: m_stop(0)
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{
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}
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float m_stop;
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RefPtr<CSSPrimitiveValue> m_color;
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};
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class CSSGradientValue : public CSSImageGeneratorValue {
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public:
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static PassRefPtr<CSSGradientValue> create()
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{
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return adoptRef(new CSSGradientValue);
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}
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virtual String cssText() const;
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virtual Image* image(RenderObject*, const IntSize&);
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CSSGradientType type() const { return m_type; }
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void setType(CSSGradientType type) { m_type = type; }
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void setFirstX(PassRefPtr<CSSPrimitiveValue> val) { m_firstX = val; }
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void setFirstY(PassRefPtr<CSSPrimitiveValue> val) { m_firstY = val; }
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void setSecondX(PassRefPtr<CSSPrimitiveValue> val) { m_secondX = val; }
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void setSecondY(PassRefPtr<CSSPrimitiveValue> val) { m_secondY = val; }
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void setFirstRadius(PassRefPtr<CSSPrimitiveValue> val) { m_firstRadius = val; }
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void setSecondRadius(PassRefPtr<CSSPrimitiveValue> val) { m_secondRadius = val; }
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void addStop(const CSSGradientColorStop& stop) { m_stops.append(stop); }
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void sortStopsIfNeeded();
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private:
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CSSGradientValue()
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: m_type(CSSLinearGradient)
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, m_stopsSorted(false)
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{
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}
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// Create the gradient for a given size.
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PassRefPtr<Gradient> createGradient(RenderObject*, const IntSize&);
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// Resolve points/radii to front end values.
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FloatPoint resolvePoint(CSSPrimitiveValue*, CSSPrimitiveValue*, const IntSize&, float zoomFactor);
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float resolveRadius(CSSPrimitiveValue*, float zoomFactor);
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// Type
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CSSGradientType m_type;
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// Points
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RefPtr<CSSPrimitiveValue> m_firstX;
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RefPtr<CSSPrimitiveValue> m_firstY;
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RefPtr<CSSPrimitiveValue> m_secondX;
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RefPtr<CSSPrimitiveValue> m_secondY;
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// Radii (for radial gradients only)
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RefPtr<CSSPrimitiveValue> m_firstRadius;
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RefPtr<CSSPrimitiveValue> m_secondRadius;
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// Stops
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Vector<CSSGradientColorStop> m_stops;
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bool m_stopsSorted;
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};
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} // namespace WebCore
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#endif // CSSGradientValue_h
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