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>
32 class CSSFontFaceSource;
38 class PLATFORM_EXPORT CustomFontData : public RefCounted<CustomFontData> {
40 static PassRefPtr<CustomFontData> create(bool isLoadingFallback = false)
42 return adoptRef(new CustomFontData(isLoadingFallback));
45 virtual ~CustomFontData() { }
47 virtual void beginLoadIfNeeded() const { };
48 bool isLoading() const { return m_isLoadingFallback && m_isUsed; }
49 bool isLoadingFallback() const { return m_isLoadingFallback; }
51 virtual bool isSVGFont() const { return false; }
52 virtual void initializeFontData(SimpleFontData*, float) { }
53 virtual float widthForSVGGlyph(Glyph, float) const { return 0.0f; }
54 virtual bool fillSVGGlyphPage(GlyphPage*, unsigned, unsigned, UChar*, unsigned, const SimpleFontData*) const { return false; }
55 virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool, int, unsigned&) const { return false; }
57 virtual void setCSSFontFaceSource(CSSFontFaceSource* source) { ASSERT_NOT_REACHED(); }
58 virtual void clearCSSFontFaceSource() { }
61 CustomFontData(bool isLoadingFallback)
62 : m_isLoadingFallback(isLoadingFallback)
67 bool m_isLoadingFallback; // Whether or not this is a temporary font data for a custom font which is not yet loaded.
68 mutable bool m_isUsed;
73 #endif // CustomFontData_h