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/*
* Copyright (C) 2008 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 CSSGradientValue_h
#define CSSGradientValue_h
#include "CSSImageGeneratorValue.h"
#include "CSSPrimitiveValue.h"
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class FloatPoint;
class Gradient;
enum CSSGradientType { CSSLinearGradient, CSSRadialGradient };
struct CSSGradientColorStop {
CSSGradientColorStop()
: m_stop(0)
{
}
float m_stop;
RefPtr<CSSPrimitiveValue> m_color;
};
class CSSGradientValue : public CSSImageGeneratorValue {
public:
static PassRefPtr<CSSGradientValue> create()
{
return adoptRef(new CSSGradientValue);
}
virtual String cssText() const;
virtual Image* image(RenderObject*, const IntSize&);
CSSGradientType type() const { return m_type; }
void setType(CSSGradientType type) { m_type = type; }
void setFirstX(PassRefPtr<CSSPrimitiveValue> val) { m_firstX = val; }
void setFirstY(PassRefPtr<CSSPrimitiveValue> val) { m_firstY = val; }
void setSecondX(PassRefPtr<CSSPrimitiveValue> val) { m_secondX = val; }
void setSecondY(PassRefPtr<CSSPrimitiveValue> val) { m_secondY = val; }
void setFirstRadius(PassRefPtr<CSSPrimitiveValue> val) { m_firstRadius = val; }
void setSecondRadius(PassRefPtr<CSSPrimitiveValue> val) { m_secondRadius = val; }
void addStop(const CSSGradientColorStop& stop) { m_stops.append(stop); }
void sortStopsIfNeeded();
private:
CSSGradientValue()
: m_type(CSSLinearGradient)
, m_stopsSorted(false)
{
}
// Create the gradient for a given size.
PassRefPtr<Gradient> createGradient(RenderObject*, const IntSize&);
// Resolve points/radii to front end values.
FloatPoint resolvePoint(CSSPrimitiveValue*, CSSPrimitiveValue*, const IntSize&, float zoomFactor);
float resolveRadius(CSSPrimitiveValue*, float zoomFactor);
// Type
CSSGradientType m_type;
// Points
RefPtr<CSSPrimitiveValue> m_firstX;
RefPtr<CSSPrimitiveValue> m_firstY;
RefPtr<CSSPrimitiveValue> m_secondX;
RefPtr<CSSPrimitiveValue> m_secondY;
// Radii (for radial gradients only)
RefPtr<CSSPrimitiveValue> m_firstRadius;
RefPtr<CSSPrimitiveValue> m_secondRadius;
// Stops
Vector<CSSGradientColorStop> m_stops;
bool m_stopsSorted;
};
} // namespace WebCore
#endif // CSSGradientValue_h
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