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/*
Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
This file is part of the KDE project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
aint with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef T2P_GLYPH_H
#define T2P_GLYPH_H
#include <list>
#include <vector>
#include <string>
#include "Affine.h"
#include "BezierPath.h"
// FreeType 2 includes
#include <ft2build.h>
#include FT_FREETYPE_H
namespace T2P
{
class Font;
// Represent one single glyph in cache
class Glyph
{
public:
Glyph();
~Glyph();
Affine &affine(); // Initial tracing affine
void setAffine(const Affine &affine);
const BezierPath *bezierPath() const; // Non-modifyable bezierPath belonging to this glyph
BezierPath *modifiableBezierPath(); // ONLY USED BY GLYPHTRACER, DO NOT USE SOMEWHERE ELSE!
void setBezierPath(const BezierPath *bpath);
FT_BBox *ftBbox();
private:
Affine m_affine;
FT_BBox m_ftBbox[4];
BezierPath *m_bezierPath;
};
// Is created for every character which needs to
// be rendered and has to be deleted by the "client"
class GlyphAffinePair
{
public:
GlyphAffinePair(const Glyph *glyph, const Affine &affine);
~GlyphAffinePair();
void setTransformatedPath(const BezierPath *path);
const BezierPath *transformatedPath() const;
const Glyph *glyph() const;
Affine &affine();
private:
const Glyph *m_glyph;
const BezierPath *m_transformatedPath;
Affine m_affine;
};
class GlyphSet
{
public:
GlyphSet();
~GlyphSet();
std::vector<GlyphAffinePair *> &set();
std::list<float> glyphXAdvance();
std::list<float> glyphYAdvance();
unsigned int glyphCount() const;
int width() const;
int height() const;
int bboxX() const;
int bboxY() const;
double xpen() const;
double ypen() const;
int underlinePosition() const;
int underlineThickness() const;
int overlinePosition() const;
int strikeThroughPosition() const;
int pixelBaseline() const;
private:
friend class Converter;
unsigned int m_glyphCount; // Number of glyphs in the set
int m_bboxX, m_bboxY; // Bounding box locations (x,y) + (x + width, y + width)
int m_width, m_height;
double m_xpen, m_ypen; // relative pen locations
int m_underlinePosition, m_underlineThickness, m_overlinePosition, m_strikeThroughPosition, m_pixelBaseline;
std::vector<GlyphAffinePair *> m_set; // Bezier paths in the set
std::list<float> m_glyphXAdvance; // List of advance values needed ie. for text paths
std::list<float> m_glyphYAdvance;
};
class GlyphLayoutParams
{
public:
GlyphLayoutParams();
~GlyphLayoutParams();
bool tb() const;
void setTb(bool tb);
bool useBidi() const;
void setUseBidi(bool bidi);
double wordSpacing() const;
void setWordSpacing(double wordSpacing);
double letterSpacing() const;
void setLetterSpacing(double letterSpacing);
std::string baselineShift() const;
void setBaselineShift(const std::string &baseline);
int glyphOrientationVertical() const;
void setGlyphOrientationVertical(int orient);
int glyphOrientationHorizontal() const;
void setGlyphOrientationHorizontal(int orient);
// textOnPath specific stuff
double textPathStartOffset() const;
void setTextPathStartOffset(double offset);
private:
bool m_tb; // Top-To-Bottom or Bottom-To-Top ?
bool m_useBidi; // Use Bidi ?
double m_wordSpacing, m_letterSpacing; // word/character spacing
double m_textPathStartOffset; // range: 0.0 - 1.0; start offset in the path
int m_glyphOrientationVertical, m_glyphOrientationHorizontal; // Degrees...
std::string m_baseline; // baseline description, using same system as svg
};
class GlyphRenderParams
{
public:
GlyphRenderParams();
~GlyphRenderParams();
Font *font() const;
void setFont(Font *font);
const GlyphLayoutParams *layout() const;
void setLayout(const GlyphLayoutParams *layout);
unsigned int glyphIndex() const;
void setGlyphIndex(unsigned int glyphIndex);
unsigned int lastGlyph() const;
void setLastGlyph(unsigned int lastGlyph);
unsigned short character() const;
void setCharacter(unsigned short character);
private:
Font *m_font;
const GlyphLayoutParams *m_layout; // Glyph layouting params
unsigned int m_glyphIndex; // 'character' index in font
unsigned int m_lastGlyph; // Kerning
unsigned short m_character; // Unicode glyph to process
};
}
#endif
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