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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"
/** Get the SpriteID mapped to the given font size and key */
SpriteID GetUnicodeGlyph(FontSize size, uint32 key);
/** Map a SpriteID to the font size and key */
void SetUnicodeGlyph(FontSize size, uint32 key, SpriteID sprite);
/** Initialize the glyph map */
void InitializeUnicodeGlyphMap();
void ResetFontSizes();
#ifdef WITH_FREETYPE
struct FreeTypeSettings {
char small_font[MAX_PATH];
char medium_font[MAX_PATH];
char large_font[MAX_PATH];
uint small_size;
uint medium_size;
uint large_size;
bool small_aa;
bool medium_aa;
bool large_aa;
};
extern FreeTypeSettings _freetype;
void InitFreeType();
void UninitFreeType();
const Sprite *GetGlyph(FontSize size, uint32 key);
uint GetGlyphWidth(FontSize size, uint32 key);
typedef bool (SetFallbackFontCallback)(const char **);
/**
* We would like to have a fallback font as the current one
* doesn't contain all characters we need.
* This function must set all fonts of settings.
* @param settings the settings to overwrite the fontname of.
* @param language_isocode the language, e.g. en_GB.
* @param winlangid the language ID windows style.
* @param callback The function to call to check for missing glyphs.
* @return true if a font has been set, false otherwise.
*/
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback);
#else
/* Stub for initializiation */
static inline void InitFreeType() { ResetFontSizes(); }
static inline void UninitFreeType() { ResetFontSizes(); }
/** Get the Sprite for a glyph */
static inline const Sprite *GetGlyph(FontSize size, uint32 key)
{
SpriteID sprite = GetUnicodeGlyph(size, key);
if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
return GetSprite(sprite, ST_FONT);
}
/** Get the width of a glyph */
static inline uint GetGlyphWidth(FontSize size, uint32 key)
{
SpriteID sprite = GetUnicodeGlyph(size, key);
if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
return SpriteExists(sprite) ? GetSprite(sprite, ST_FONT)->width + (size != FS_NORMAL) : 0;
}
#endif /* WITH_FREETYPE */
#endif /* FONTCACHE_H */
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