summaryrefslogtreecommitdiffstats
path: root/gfx/graphite2/src/inc/Font.h
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/graphite2/src/inc/Font.h')
-rw-r--r--gfx/graphite2/src/inc/Font.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/gfx/graphite2/src/inc/Font.h b/gfx/graphite2/src/inc/Font.h
new file mode 100644
index 000000000..bc7084050
--- /dev/null
+++ b/gfx/graphite2/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 {};