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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file fontcache.h Functions to read fonts from files and cache them. */
#ifndef FONTCACHE_H
#define FONTCACHE_H
#include "spritecache.h"
/** Font cache for basic fonts. */
class FontCache {
private:
static FontCache *caches[FS_END]; ///< All the font caches.
protected:
FontCache *parent; ///< The parent of this font cache.
const FontSize fs; ///< The size of the font.
public:
FontCache(FontSize fs);
virtual ~FontCache();
/**
* Get the SpriteID mapped to the given key
* @param key The key to get the sprite for.
* @return The sprite.
*/
virtual SpriteID GetUnicodeGlyph(uint32 key) = 0;
/**
* Map a SpriteID to the key
* @param key The key to map to.
* @param sprite The sprite that is being mapped.
*/
virtual void SetUnicodeGlyph(uint32 key, SpriteID sprite) = 0;
/** Initialize the glyph map */
virtual void InitializeUnicodeGlyphMap() = 0;
/** Clear the font cache. */
virtual void ClearFontCache() = 0;
/**
* Get the glyph (sprite) of the given key.
* @param key The key to look up.
* @return The sprite.
*/
virtual const Sprite *GetGlyph(uint32 key) = 0;
/**
* Get the width of the glyph with the given key.
* @param key The key to look up.
* @return The width.
*/
virtual uint GetGlyphWidth(uint32 key) = 0;
/**
* Do we need to draw a glyph shadow?
* @return True if it has to be done, otherwise false.
*/
virtual bool GetDrawGlyphShadow() = 0;
/**
* Get the font cache of a given font size.
* @param fs The font size to look up.
* @return The font cache.
*/
static inline FontCache *Get(FontSize fs)
{
assert(fs < FS_END);
return FontCache::caches[fs];
}
/**
* Check whether the font cache has a parent.
*/
inline bool HasParent()
{
return this->parent != NULL;
}
};
/** Get the SpriteID mapped to the given font size and key */
static inline SpriteID GetUnicodeGlyph(FontSize size, uint32 key)
{
return FontCache::Get(size)->GetUnicodeGlyph(key);
}
/** Map a SpriteID to the font size and key */
static inline void SetUnicodeGlyph(FontSize size, uint32 key, SpriteID sprite)
{
FontCache::Get(size)->SetUnicodeGlyph(key, sprite);
}
/** Initialize the glyph map */
static inline void InitializeUnicodeGlyphMap()
{
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
FontCache::Get(fs)->InitializeUnicodeGlyphMap();
}
}
static inline void ClearFontCache() {
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
FontCache::Get(fs)->ClearFontCache();
}
}
/** Get the Sprite for a glyph */
static inline const Sprite *GetGlyph(FontSize size, uint32 key)
{
return FontCache::Get(size)->GetGlyph(key);
}
/** Get the width of a glyph */
static inline uint GetGlyphWidth(FontSize size, uint32 key)
{
return FontCache::Get(size)->GetGlyphWidth(key);
}
static inline bool GetDrawGlyphShadow(FontSize size)
{
return FontCache::Get(size)->GetDrawGlyphShadow();
}
#ifdef WITH_FREETYPE
/** Settings for a single freetype font. */
struct FreeTypeSubSetting {
char font[MAX_PATH]; ///< The name of the font, or path to the font.
uint size; ///< The (requested) size of the font.
bool aa; ///< Whether to do anti aliasing or not.
};
/** Settings for the freetype fonts. */
struct FreeTypeSettings {
FreeTypeSubSetting small; ///< The smallest font; mostly used for zoomed out view.
FreeTypeSubSetting medium; ///< The normal font size.
FreeTypeSubSetting large; ///< The largest font; mostly used for newspapers.
FreeTypeSubSetting mono; ///< The mono space font used for license/readme viewers.
};
extern FreeTypeSettings _freetype;
void InitFreeType(bool monospace);
void UninitFreeType();
#else
/* Stub for initializiation */
static inline void InitFreeType(bool monospace) { extern void ResetFontSizes(bool monospace); ResetFontSizes(monospace); }
static inline void UninitFreeType() {}
#endif /* WITH_FREETYPE */
#endif /* FONTCACHE_H */
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