freetype2fontrendering.h

光滑质点无网格法SPH并行计算程序

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// 
// =============================================================================
//                       Minimalist OpenGL Environment
// =============================================================================
//
// This file is part of Minimalist OpenGL Environment (MinGLE)
//
// Version: 0.2.0
// Author: Balazs Domonkos
// Filename: src/fontrendering/include/FreeType2FontRendering.h
// Creation Date: January 25th 2008
// Revision Date: January 25th 2008
//
//
// The Minimalist OpenGL Environment is free software: you can
// redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// The Minimalist OpenGL Environment 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with Minimalist OpenGL Environment.  If not, see 
// <http://www.gnu.org/licenses/>. See the COPYING file included 
// with this distribution file for license details.
//

/// @file FreeType2FontRendering.h
/// FreeType2 font rendering implementation

#ifndef __MINGLE_FREETYPE2_FONT_RENDERING_H__
#define __MINGLE_FREETYPE2_FONT_RENDERING_H__

// Include class definitions
#include <classes.h>

// MinGLE headers
#include <FontRendering.h>

// System headers
#include <ft2build.h>
#include FT_FREETYPE_H

namespace MinGLE {

class FreeType2Font : public RasterFont {

protected:
	/// Add a gap between letters vert and horz
	/// prevents nasty artifacts when letters are too close together
	static const unsigned FONT_CHAR_SPACER = 5;

public:
	FreeType2Font(const FT_Byte *memoryBuffer, int bufferLength,
			unsigned height = DEFAULT_FONT_HEIGHT,
			unsigned width = DEFAULT_FONT_WIDTH, long faceIndex = 0,
			unsigned firstCharacter = DEFAULT_FIRST_CHARACTER,
			unsigned lastCharacter = DEFAULT_LAST_CHARACTER,
			GLenum format = DEFAULT_FONT_FORMAT,
			GLenum type = DEFAULT_FONT_TYPE,
			ImageScaleMode imageScaleMode = DEFAULT_IMAGE_SCALE_MODE);
}; // class FreeType2Font

// =============================================================================

class FreeType2FontRendering : public FontRendering {

protected:
	static FT_Library mLibraryHandle;

public:
	static const std::string IMPLEMENTATION_NAME;
	
public:
	FreeType2FontRendering();
	virtual ~FreeType2FontRendering();

	static FT_Library getLibraryHandle();

public:

protected:
	virtual Font *_createFont(const std::string& filename,
			VirtualFileSystem *vfs, size_t height, size_t width,
			long faceIndex, size_t firstCharacter, size_t lastCharacter,
			GLenum format, GLenum type, RasterFont::ImageScaleMode imageScaleMode);
	virtual void _saveFont(Font *font, const std::string& filename, VirtualFileSystem *vfs);
}; // FreeType2FontRendering

} // namespace MinGLE

#endif // __MINGLE_FREETYPE2_FONT_RENDERING_H__