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authorscuri <scuri>2010-06-21 22:55:10 +0000
committerscuri <scuri>2010-06-21 22:55:10 +0000
commit37a92b86d13e89d0dcec92be6d23ceced29dbc36 (patch)
treefaff61ef668379212b4ed948934533c3f2fe308b /src/ftgl/FTGlyphContainer.h
parenta124216ee05a5d63ea8fcdafcd050ad1fadf0b09 (diff)
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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__