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| 1 /* | |
| 2 * Copyright (C) Research In Motion Limited 2011. All rights reserved. | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 * | |
| 19 */ | |
| 20 | |
| 21 #ifndef SVGTextRunRenderingContext_h | |
| 22 #define SVGTextRunRenderingContext_h | |
| 23 | |
| 24 #include "platform/fonts/Font.h" | |
| 25 #include "platform/text/TextRun.h" | |
| 26 | |
| 27 namespace blink { | |
| 28 | |
| 29 class RenderObject; | |
| 30 class RenderSVGResource; | |
| 31 | |
| 32 class SVGTextRunRenderingContext final : public TextRun::RenderingContext { | |
| 33 public: | |
| 34 static PassRefPtr<SVGTextRunRenderingContext> create(RenderObject* renderer) | |
| 35 { | |
| 36 return adoptRef(new SVGTextRunRenderingContext(renderer)); | |
| 37 } | |
| 38 | |
| 39 RenderObject* renderer() const { return m_renderer; } | |
| 40 | |
| 41 #if ENABLE(SVG_FONTS) | |
| 42 virtual GlyphData glyphDataForCharacter(const Font&, const TextRun&, SimpleS
haper&, UChar32 character, bool mirror, int currentCharacter, unsigned& advanceL
ength) override; | |
| 43 virtual void drawSVGGlyphs(GraphicsContext*, const TextRun&, const SimpleFon
tData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const override; | |
| 44 virtual float floatWidthUsingSVGFont(const Font&, const TextRun&, int& chars
Consumed, Glyph& glyphId) const override; | |
| 45 #else | |
| 46 virtual GlyphData glyphDataForCharacter(const Font&, const TextRun&, SimpleS
haper&, UChar32 character, bool mirror, int currentCharacter, unsigned& advanceL
ength) override { return 0; } | |
| 47 virtual void drawSVGGlyphs(GraphicsContext*, const TextRun&, const SimpleFon
tData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const override
{ } | |
| 48 virtual float floatWidthUsingSVGFont(const Font&, const TextRun&, int& chars
Consumed, Glyph& glyphId) const override { return 0; } | |
| 49 #endif | |
| 50 | |
| 51 private: | |
| 52 SVGTextRunRenderingContext(RenderObject* renderer) | |
| 53 : m_renderer(renderer) | |
| 54 { | |
| 55 } | |
| 56 | |
| 57 virtual ~SVGTextRunRenderingContext() { } | |
| 58 | |
| 59 RenderObject* m_renderer; | |
| 60 }; | |
| 61 | |
| 62 inline bool textRunNeedsRenderingContext(const Font& font) | |
| 63 { | |
| 64 // Only save the extra data if SVG Fonts are used, which depend on them. | |
| 65 // FIXME: SVG Fonts won't work as segmented fonts at the moment, if that's f
ixed, we need to check for them as well below. | |
| 66 ASSERT(font.primaryFont()); | |
| 67 return font.primaryFont()->isSVGFont(); | |
| 68 } | |
| 69 | |
| 70 } // namespace blink | |
| 71 | |
| 72 #endif // SVGTextRunRenderingContext_h | |
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