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/*
Copyright (C) 2001-2004 Stephane Magnenat & Luc-Olivier de Charrière
for any question or comment contact us at <stephane at magnenat dot net> or <NuageBleu at gmail dot com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __TRUETYPE_FONT_H
#define __TRUETYPE_FONT_H
#include <GAGSys.h>
#include "GraphicContext.h"
#include "SDL_ttf.h"
#include <stack>
#include <map>
#include <string>
struct SDL_Surface;
namespace GAGCore
{
class DrawableSurface;
//! An implementation of Font using SDL_TTF
class TrueTypeFont:public Font
{
static const bool verbose = false;
public:
TrueTypeFont();
TrueTypeFont(const char *filename, unsigned size);
virtual ~TrueTypeFont();
bool load(const char *filename, unsigned size);
//! Get the width of string with shape. Update cache
int getStringWidth(const char *string);
//! Get the height of string with shape. If string is NULL, return base value, else update cache
int getStringHeight(const char *string);
// Style and color
virtual void setStyle(Style style);
virtual Style getStyle(void) const;
protected:
//! Init internal variables
void init(void);
virtual void drawString(DrawableSurface *surface, int x, int y, int w, const char *text, Uint8 alpha);
virtual void drawString(DrawableSurface *surface, float x, float y, float w, const char *text, Uint8 alpha);
virtual void pushStyle(Style style);
virtual void popStyle(void);
//! If text is cached, returns its surface. If it is not, create, cache and return surface
DrawableSurface *getStringCached(const char *text);
//! If cache is too big, remove old entry
void cleanupCache(void);
#ifdef HAVE_FRIBIDI
char *getBIDIString (const char *text);
#endif
protected:
TTF_Font *font;
std::stack<Style> styleStack;
struct CacheKey
{
std::string text;
Style style;
bool operator<(const CacheKey &o) const { if (text == o.text) return (style < o.style); else return (text < o.text); }
};
struct CacheData
{
DrawableSurface *s;
unsigned lastAccessed;
};
unsigned now;
std::map<CacheKey, CacheData> cache;
std::map<unsigned, std::map<CacheKey, CacheData>::iterator> timeCache;
//! number of cache hit
unsigned cacheHit;
//! number of cache miss
unsigned cacheMiss;
};
}
#endif
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