65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
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// Copyright (C) 2008 Tim Moore
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifndef FLIGHTGEAR_SAFETEXFONT_HXX
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#define FLIGHTGEAR_SAFETEXFONT_HXX 1
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#include <string>
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#include <plib/fnt.h>
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namespace flightgear
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{
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/**
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* Subclass of plib's fntTexFont that defers the loading of the font
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* texture until just before rendering, insuring that it happens in
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* the proper graphics context.
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*/
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class SafeTexFont : public fntTexFont
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{
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public:
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SafeTexFont() : _status(NOT_LOADED) {}
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/** Load the texture for this font.
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* @param mag OpenGL texture magnification; default is GL_NEAREST
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* @param min OpenGL texture minification; default is
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* GL_LINEAR_MIPMAP_LINEAR.
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* @return the plib value FNT_FALSE if the font file doesn't
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* exist; otherwise returns FNT_TRUE.
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*/
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int load(const char *fname, GLenum mag = GL_NEAREST,
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GLenum min = GL_LINEAR_MIPMAP_LINEAR);
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void begin();
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void putch(sgVec3 curpos, float pointsize, float italic, char c);
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void puts(sgVec3 curpos, float pointsize, float italic, const char *s);
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enum FontStatus
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{
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ERROR = -1,
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NOT_LOADED = 0,
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LOADED = 1
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};
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FontStatus getStatus() { return _status; }
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std::string& fntError() { return _error; }
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protected:
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bool ensureTextureLoaded();
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std::string _name;
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std::string _error;
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GLenum _mag;
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GLenum _min;
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FontStatus _status;
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};
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}
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#endif
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