117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
// GLFT_Font (http://polimath.com/blog/code/glft_font/)
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// by James Turk (james.p.turk@gmail.com)
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// Based on work by Marijn Haverbeke (http://marijn.haverbeke.nl)
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//
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// Version 0.2.2 - Released 28 February 2011 - Fixed linux compilation.
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// Version 0.2.1 - Released 2 March 2008 - Updated contact information.
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// Version 0.2.0 - Released 18 July 2005 - Added beginDraw/endDraw,
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// Changed vsprintf to vsnprintf
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// Version 0.1.0 - Released 1 July 2005 - Initial Release
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//
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// Copyright (c) 2005-2008, James Turk
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the GLFT_Font nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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#ifndef GLFT_FONT_HPP
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#define GLFT_FONT_HPP
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#ifdef __APPLE__
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#include <OpenGL/gl.h>
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#else
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#include <GL/gl.h>
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#endif
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include <string>
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#include <vector>
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#include <stdexcept>
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#include <cstdarg>
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#include <sstream>
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class FTLibraryContainer
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{
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public:
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FTLibraryContainer();
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~FTLibraryContainer();
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FT_Library& getLibrary();
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private:
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static FT_Library library_;
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};
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class StreamFlusher { };
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std::ostream& operator<<(std::ostream& os, const StreamFlusher& rhs);
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class GLFT_Font
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{
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public:
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GLFT_Font();
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GLFT_Font(const std::string& filename, unsigned int size);
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~GLFT_Font();
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void open(const std::string& filename, unsigned int size);
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void release();
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bool isValid() const;
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void drawText(float x, float y, const char *str, ...) const;
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void drawText(float x, float y, const std::string& str) const;
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std::ostream& beginDraw(float x, float y);
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StreamFlusher endDraw();
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unsigned int calcStringWidth(const std::string& str) const;
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unsigned int getHeight() const;
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private:
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// leave copy constructor and operator= undefined to make noncopyable
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GLFT_Font(const GLFT_Font&);
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const GLFT_Font& operator=(const GLFT_Font&);
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private:
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// font data
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unsigned int texID_;
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unsigned int listBase_;
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std::vector<unsigned char> widths_;
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unsigned char height_;
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// stream drawing stuff
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std::ostringstream ss_;
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float drawX_;
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float drawY_;
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static const unsigned int SPACE = 32;
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static const unsigned int NUM_CHARS = 96;
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static FTLibraryContainer library_;
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};
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#endif //GLFT_FONT_HPP
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