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Diffstat (limited to 'Build/source/libs/graphite2/graphite2-1.3.0/src/inc/Font.h')
-rw-r--r-- | Build/source/libs/graphite2/graphite2-1.3.0/src/inc/Font.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Build/source/libs/graphite2/graphite2-1.3.0/src/inc/Font.h b/Build/source/libs/graphite2/graphite2-1.3.0/src/inc/Font.h new file mode 100644 index 00000000000..bc7084050e5 --- /dev/null +++ b/Build/source/libs/graphite2/graphite2-1.3.0/src/inc/Font.h @@ -0,0 +1,89 @@ +/* GRAPHITE2 LICENSING + + Copyright 2010, SIL International + All rights reserved. + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of License, or + (at your option) any later version. + + This program 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 + Lesser General Public License for more details. + + You should also have received a copy of the GNU Lesser General Public + License along with this library in the file named "LICENSE". + If not, write to the Free Software Foundation, 51 Franklin Street, + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the + internet at http://www.fsf.org/licenses/lgpl.html. + +Alternatively, the contents of this file may be used under the terms of the +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public +License, as published by the Free Software Foundation, either version 2 +of the License or (at your option) any later version. +*/ +#pragma once +#include <cassert> +#include "graphite2/Font.h" +#include "inc/Main.h" +#include "inc/Face.h" + +namespace graphite2 { + +#define INVALID_ADVANCE -1e38f // can't be a static const because non-integral + +class Font +{ +public: + Font(float ppm, const Face & face, const void * appFontHandle=0, const gr_font_ops * ops=0); + virtual ~Font(); + + float advance(unsigned short glyphid) const; + float scale() const; + bool isHinted() const; + const Face & face() const; + + CLASS_NEW_DELETE; +private: + gr_font_ops m_ops; + const void * const m_appFontHandle; + float * m_advances; // One advance per glyph in pixels. Nan if not defined + const Face & m_face; + float m_scale; // scales from design units to ppm + bool m_hinted; + + Font(const Font&); + Font& operator=(const Font&); +}; + +inline +float Font::advance(unsigned short glyphid) const +{ + if (m_advances[glyphid] == INVALID_ADVANCE) + m_advances[glyphid] = (*m_ops.glyph_advance_x)(m_appFontHandle, glyphid); + return m_advances[glyphid]; +} + +inline +float Font::scale() const +{ + return m_scale; +} + +inline +bool Font::isHinted() const +{ + return m_hinted; +} + +inline +const Face & Font::face() const +{ + return m_face; +} + +} // namespace graphite2 + +struct gr_font : public graphite2::Font {}; |