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/*
* Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef RenderSVGResourcePaintServer_h
#define RenderSVGResourcePaintServer_h
#include "core/rendering/svg/RenderSVGResourceContainer.h"
#include "platform/graphics/Color.h"
#include "platform/graphics/Gradient.h"
#include "platform/graphics/Pattern.h"
namespace blink {
enum RenderSVGResourceMode {
ApplyToFillMode,
ApplyToStrokeMode,
};
class GraphicsContext;
class GraphicsContextStateSaver;
class RenderObject;
class RenderSVGResourcePaintServer;
class RenderStyle;
class SVGPaintServer {
public:
explicit SVGPaintServer(Color);
explicit SVGPaintServer(PassRefPtr<Gradient>);
explicit SVGPaintServer(PassRefPtr<Pattern>);
static SVGPaintServer requestForRenderer(const RenderObject&, const RenderStyle*, RenderSVGResourceMode);
static bool existsForRenderer(const RenderObject&, const RenderStyle*, RenderSVGResourceMode);
void apply(GraphicsContext&, RenderSVGResourceMode, GraphicsContextStateSaver* = 0);
static SVGPaintServer invalid() { return SVGPaintServer(Color(Color::transparent)); }
bool isValid() const { return m_color != Color::transparent; }
bool isTransformDependent() const { return m_gradient || m_pattern; }
void prependTransform(const AffineTransform&);
private:
RefPtr<Gradient> m_gradient;
RefPtr<Pattern> m_pattern;
Color m_color;
};
// If |SVGPaintDescription::hasFallback| is true, |SVGPaintDescription::color| is set to a fallback color.
struct SVGPaintDescription {
SVGPaintDescription() : resource(nullptr), isValid(false), hasFallback(false) { }
SVGPaintDescription(Color color) : resource(nullptr), color(color), isValid(true), hasFallback(false) { }
SVGPaintDescription(RenderSVGResourcePaintServer* resource) : resource(resource), isValid(true), hasFallback(false) { ASSERT(resource); }
SVGPaintDescription(RenderSVGResourcePaintServer* resource, Color fallbackColor) : resource(resource), color(fallbackColor), isValid(true), hasFallback(true) { ASSERT(resource); }
RenderSVGResourcePaintServer* resource;
Color color;
bool isValid;
bool hasFallback;
};
class RenderSVGResourcePaintServer : public RenderSVGResourceContainer {
public:
RenderSVGResourcePaintServer(SVGElement*);
virtual ~RenderSVGResourcePaintServer();
virtual SVGPaintServer preparePaintServer(const RenderObject&) = 0;
// Helper utilities used in to access the underlying resources for DRT.
static SVGPaintDescription requestPaintDescription(const RenderObject&, const RenderStyle*, RenderSVGResourceMode);
};
DEFINE_TYPE_CASTS(RenderSVGResourcePaintServer, RenderSVGResourceContainer, resource, resource->isSVGPaintServer(), resource.isSVGPaintServer());
}
#endif
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