2 * Copyright (C) 2013 Google, Inc.
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.
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.
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.
21 #ifndef CustomFontData_h
22 #define CustomFontData_h
24 #include "platform/PlatformExport.h"
25 #include "platform/fonts/Glyph.h"
26 #include "wtf/PassRefPtr.h"
27 #include "wtf/RefCounted.h"
28 #include <unicode/uchar.h>
37 class PLATFORM_EXPORT CustomFontData : public RefCounted<CustomFontData> {
39 static PassRefPtr<CustomFontData> create() { return adoptRef(new CustomFontData()); }
41 virtual ~CustomFontData() { }
43 virtual void beginLoadIfNeeded() const { };
44 virtual bool isLoading() const { return false; }
45 virtual bool isLoadingFallback() const { return false; }
46 virtual bool shouldSkipDrawing() const { return false; }
47 virtual void clearFontFaceSource() { }
49 virtual bool isSVGFont() const { return false; }
50 virtual void initializeFontData(SimpleFontData*, float) { }
51 virtual float widthForSVGGlyph(Glyph, float) const { return 0.0f; }
52 virtual bool fillSVGGlyphPage(GlyphPage*, unsigned, unsigned, UChar*, unsigned, const SimpleFontData*) const { return false; }
53 virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool, int, unsigned&) const { return false; }
59 #define DEFINE_CUSTOM_FONT_DATA_TYPE_CASTS(thisType, predicate) \
60 template<typename T> inline thisType* to##thisType(const RefPtr<T>& customFontData) { return to##thisType(customFontData.get()); } \
61 DEFINE_TYPE_CASTS(thisType, CustomFontData, customFontData, customFontData->predicate, customFontData.predicate)
65 #endif // CustomFontData_h