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/*
* FTGL - OpenGL font library
*
* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
* Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __FTTextureGlyphImpl__
#define __FTTextureGlyphImpl__
#include "FTGlyphImpl.h"
class FTTextureGlyphImpl : public FTGlyphImpl
{
friend class FTTextureGlyph;
friend class FTTextureFontImpl;
protected:
FTTextureGlyphImpl(FT_GlyphSlot glyph, int id, int xOffset,
int yOffset, int width, int height);
virtual ~FTTextureGlyphImpl();
virtual const FTPoint& RenderImpl(const FTPoint& pen, int renderMode);
private:
/**
* Reset the currently active texture to zero to get into a known
* state before drawing a string. This is to get round possible
* threading issues.
*/
static void ResetActiveTexture() { activeTextureID = 0; }
/**
* The width of the glyph 'image'
*/
int destWidth;
/**
* The height of the glyph 'image'
*/
int destHeight;
/**
* Vector from the pen position to the topleft corner of the pixmap
*/
FTPoint corner;
/**
* The texture co-ords of this glyph within the texture.
*/
FTPoint uv[2];
/**
* The texture index that this glyph is contained in.
*/
int glTextureID;
/**
* The texture index of the currently active texture
*
* We keep track of the currently active texture to try to reduce the
* number of texture bind operations.
*/
static GLint activeTextureID;
};
#endif // __FTTextureGlyphImpl__
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