| /* |
| * Copyright (C) 2013 Google, Inc. |
| * |
| * 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 CustomFontData_h |
| #define CustomFontData_h |
| |
| #include "platform/fonts/Glyph.h" |
| #include "wtf/PassRefPtr.h" |
| #include "wtf/RefCounted.h" |
| #include <unicode/uchar.h> |
| |
| namespace WebCore { |
| |
| class CSSFontFaceSource; |
| struct GlyphData; |
| class GlyphPage; |
| class SimpleFontData; |
| struct WidthIterator; |
| |
| class CustomFontData : public RefCounted<CustomFontData> { |
| public: |
| static PassRefPtr<CustomFontData> create(bool isLoadingFallback = false) |
| { |
| return adoptRef(new CustomFontData(isLoadingFallback)); |
| } |
| |
| virtual ~CustomFontData() { } |
| |
| virtual void beginLoadIfNeeded() const { }; |
| bool isLoading() const { return m_isLoadingFallback && m_isUsed; } |
| bool isLoadingFallback() const { return m_isLoadingFallback; } |
| |
| virtual bool isSVGFont() const { return false; } |
| virtual void initializeFontData(SimpleFontData*, float) { } |
| virtual float widthForSVGGlyph(Glyph, float) const { return 0.0f; } |
| virtual bool fillSVGGlyphPage(GlyphPage*, unsigned, unsigned, UChar*, unsigned, const SimpleFontData*) const { return false; } |
| virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool, int, unsigned&) const { return false; } |
| |
| virtual void setCSSFontFaceSource(CSSFontFaceSource* source) { ASSERT_NOT_REACHED(); } |
| virtual void clearCSSFontFaceSource() { } |
| |
| protected: |
| CustomFontData(bool isLoadingFallback) |
| : m_isLoadingFallback(isLoadingFallback) |
| , m_isUsed(false) |
| { |
| } |
| |
| bool m_isLoadingFallback; // Whether or not this is a temporary font data for a custom font which is not yet loaded. |
| mutable bool m_isUsed; |
| }; |
| |
| } |
| |
| #endif // CustomFontData_h |