57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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Copyright (C) 2014 Paul Davis, Robin Gareus
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __libgtkmm2ext_emscale_h__
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#define __libgtkmm2ext_emscale_h__
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#include <map>
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#include <string>
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#include <pangomm/fontdescription.h>
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#include "gtkmm2ext/visibility.h"
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namespace Gtkmm2ext
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{
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class LIBGTKMM2EXT_API EmScale
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{
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public:
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EmScale (const Pango::FontDescription&);
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unsigned int char_pixel_width() { if (_char_pixel_width < 1) recalc_char_pixel_geometry() ; return _char_pixel_width; }
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unsigned int char_pixel_height() { if (_char_pixel_height < 1) recalc_char_pixel_geometry() ; return _char_pixel_height; }
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float char_avg_pixel_width() { if (_char_pixel_width < 1) recalc_char_pixel_geometry() ; return _char_avg_pixel_width; }
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static EmScale& by_font (const Pango::FontDescription&);
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private:
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Pango::FontDescription _font;
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unsigned int _char_pixel_width;
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unsigned int _char_pixel_height;
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float _char_avg_pixel_width;
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void recalc_char_pixel_geometry ();
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static std::map<std::string,EmScale> _emscales;
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};
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} // namespace
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#endif /* __libgtkmm2ext_emscale_h__ */
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