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/*
* FTGL - OpenGL font library
*
* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
*
* 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 __FTGlyphContainer__
#define __FTGlyphContainer__
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include "FTGL/ftgl.h"
#include "FTVector.h"
class FTFace;
class FTGlyph;
class FTCharmap;
/**
* FTGlyphContainer holds the post processed FTGlyph objects.
*
* @see FTGlyph
*/
class FTGlyphContainer
{
typedef FTVector<FTGlyph*> GlyphVector;
public:
/**
* Constructor
*
* @param face The Freetype face
*/
FTGlyphContainer(FTFace* face);
/**
* Destructor
*/
~FTGlyphContainer();
/**
* Sets the character map for the face.
*
* @param encoding the Freetype encoding symbol. See above.
* @return <code>true</code> if charmap was valid
* and set correctly
*/
bool CharMap(FT_Encoding encoding);
/**
* Get the font index of the input character.
*
* @param characterCode The character code of the requested glyph in the
* current encoding eg apple roman.
* @return The font index for the character.
*/
unsigned int FontIndex(const unsigned int characterCode) const;
/**
* Adds a glyph to this glyph list.
*
* @param glyph The FTGlyph to be inserted into the container
* @param characterCode The char code of the glyph NOT the glyph index.
*/
void Add(FTGlyph* glyph, const unsigned int characterCode);
/**
* Get a glyph from the glyph list
*
* @param characterCode The char code of the glyph NOT the glyph index
* @return An FTGlyph or <code>null</code> is it hasn't been
* loaded.
*/
const FTGlyph* const Glyph(const unsigned int characterCode) const;
/**
* Get the bounding box for a character.
* @param characterCode The char code of the glyph NOT the glyph index
*/
FTBBox BBox(const unsigned int characterCode) const;
/**
* Returns the kerned advance width for a glyph.
*
* @param characterCode glyph index of the character
* @param nextCharacterCode the next glyph in a string
* @return advance width
*/
float Advance(const unsigned int characterCode,
const unsigned int nextCharacterCode);
/**
* Renders a character
* @param characterCode the glyph to be Rendered
* @param nextCharacterCode the next glyph in the string. Used for kerning.
* @param penPosition the position to Render the glyph
* @param renderMode Render mode to display
* @return The distance to advance the pen position after Rendering
*/
FTPoint Render(const unsigned int characterCode,
const unsigned int nextCharacterCode,
FTPoint penPosition, int renderMode);
/**
* Queries the Font for errors.
*
* @return The current error code.
*/
FT_Error Error() const { return err; }
private:
/**
* The FTGL face
*/
FTFace* face;
/**
* The Character Map object associated with the current face
*/
FTCharmap* charMap;
/**
* A structure to hold the glyphs
*/
GlyphVector glyphs;
/**
* Current error code. Zero means no error.
*/
FT_Error err;
};
#endif // __FTGlyphContainer__
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