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/*
* Copyright (C) Research In Motion Limited 2011. 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 SVGTextRunRenderingContext_h
#define SVGTextRunRenderingContext_h
#include "Font.h"
#include "TextRun.h"
namespace WebCore {
class RenderObject;
class RenderSVGResource;
class SVGTextRunRenderingContext : public TextRun::RenderingContext {
public:
static PassRefPtr<SVGTextRunRenderingContext> create(RenderObject* renderer)
{
return adoptRef(new SVGTextRunRenderingContext(renderer));
}
RenderObject* renderer() const { return m_renderer; }
#if ENABLE(SVG_FONTS)
RenderSVGResource* activePaintingResource() const { return m_activePaintingResource; }
void setActivePaintingResource(RenderSVGResource* object) { m_activePaintingResource = object; }
virtual GlyphData glyphDataForCharacter(const Font&, const TextRun&, WidthIterator&, UChar32 character, bool mirror, int currentCharacter, unsigned& advanceLength);
virtual void drawSVGGlyphs(GraphicsContext*, const TextRun&, const SimpleFontData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const;
virtual float floatWidthUsingSVGFont(const Font&, const TextRun&, int& charsConsumed, String& glyphName) const;
virtual bool applySVGKerning(const SimpleFontData*, WidthIterator&, GlyphBuffer*, int from) const;
#endif
private:
SVGTextRunRenderingContext(RenderObject* renderer)
: m_renderer(renderer)
#if ENABLE(SVG_FONTS)
, m_activePaintingResource(0)
#endif
{
}
virtual ~SVGTextRunRenderingContext() { }
RenderObject* m_renderer;
#if ENABLE(SVG_FONTS)
RenderSVGResource* m_activePaintingResource;
#endif
};
inline bool textRunNeedsRenderingContext(const Font& font)
{
// Only save the extra data if SVG Fonts are used, which depend on them.
// FIXME: SVG Fonts won't work as segmented fonts at the moment, if that's fixed, we need to check for them as well below.
ASSERT(font.primaryFont());
return font.primaryFont()->isSVGFont();
}
} // namespace WebCore
#endif // SVGTextRunRenderingContext_h
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