156 lines
4.8 KiB
C++
Executable File
156 lines
4.8 KiB
C++
Executable File
/*
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* FTGL - OpenGL font library
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*
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* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __FTGlyphContainer__
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#define __FTGlyphContainer__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_GLYPH_H
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#include "FTGL/ftgl.h"
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#include "FTVector.h"
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class FTFace;
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class FTGlyph;
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class FTCharmap;
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/**
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* FTGlyphContainer holds the post processed FTGlyph objects.
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*
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* @see FTGlyph
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*/
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class FTGlyphContainer
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{
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typedef FTVector<FTGlyph*> GlyphVector;
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public:
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/**
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* Constructor
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*
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* @param face The Freetype face
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*/
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FTGlyphContainer(FTFace* face);
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/**
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* Destructor
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*/
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~FTGlyphContainer();
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/**
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* Sets the character map for the face.
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*
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* @param encoding the Freetype encoding symbol. See above.
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* @return <code>true</code> if charmap was valid
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* and set correctly
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*/
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bool CharMap(FT_Encoding encoding);
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/**
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* Get the font index of the input character.
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*
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* @param characterCode The character code of the requested glyph in the
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* current encoding eg apple roman.
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* @return The font index for the character.
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*/
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unsigned int FontIndex(const unsigned int characterCode) const;
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/**
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* Adds a glyph to this glyph list.
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*
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* @param glyph The FTGlyph to be inserted into the container
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* @param characterCode The char code of the glyph NOT the glyph index.
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*/
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void Add(FTGlyph* glyph, const unsigned int characterCode);
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/**
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* Get a glyph from the glyph list
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*
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* @param characterCode The char code of the glyph NOT the glyph index
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* @return An FTGlyph or <code>null</code> is it hasn't been
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* loaded.
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*/
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const FTGlyph* const Glyph(const unsigned int characterCode) const;
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/**
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* Get the bounding box for a character.
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* @param characterCode The char code of the glyph NOT the glyph index
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*/
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FTBBox BBox(const unsigned int characterCode) const;
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/**
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* Returns the kerned advance width for a glyph.
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*
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* @param characterCode glyph index of the character
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* @param nextCharacterCode the next glyph in a string
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* @return advance width
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*/
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float Advance(const unsigned int characterCode,
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const unsigned int nextCharacterCode);
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/**
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* Renders a character
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* @param characterCode the glyph to be Rendered
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* @param nextCharacterCode the next glyph in the string. Used for kerning.
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* @param penPosition the position to Render the glyph
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* @param renderMode Render mode to display
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* @return The distance to advance the pen position after Rendering
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*/
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FTPoint Render(const unsigned int characterCode,
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const unsigned int nextCharacterCode,
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FTPoint penPosition, int renderMode);
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/**
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* Queries the Font for errors.
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*
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* @return The current error code.
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*/
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FT_Error Error() const { return err; }
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private:
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/**
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* The FTGL face
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*/
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FTFace* face;
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/**
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* The Character Map object associated with the current face
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*/
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FTCharmap* charMap;
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/**
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* A structure to hold the glyphs
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*/
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GlyphVector glyphs;
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/**
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* Current error code. Zero means no error.
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*/
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FT_Error err;
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};
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#endif // __FTGlyphContainer__
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