Change: Separate fontcache implementations.

src/fontcache/spritefontcache.h

@@ -0,0 +1,38 @@
+/*
+ * 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 spritefontcache.h Sprite font cache implementation definition. */
+
+#ifndef SPRITEFONTCACHE_H
+#define SPRITEFONTCACHE_H
+
+#include "../string_func.h"
+#include "../fontcache.h"
+
+/** Font cache for fonts that are based on a freetype font. */
+class SpriteFontCache : public FontCache {
+private:
+	SpriteID **glyph_to_spriteid_map; ///< Mapping of glyphs to sprite IDs.
+
+	void ClearGlyphToSpriteMap();
+public:
+	SpriteFontCache(FontSize fs);
+	~SpriteFontCache();
+	virtual SpriteID GetUnicodeGlyph(WChar key);
+	virtual void SetUnicodeGlyph(WChar key, SpriteID sprite);
+	virtual void InitializeUnicodeGlyphMap();
+	virtual void ClearFontCache();
+	virtual const Sprite *GetGlyph(GlyphID key);
+	virtual uint GetGlyphWidth(GlyphID key);
+	virtual bool GetDrawGlyphShadow();
+	virtual GlyphID MapCharToGlyph(WChar key) { assert(IsPrintable(key)); return SPRITE_GLYPH | key; }
+	virtual const void *GetFontTable(uint32 tag, size_t &length) { length = 0; return nullptr; }
+	virtual const char *GetFontName() { return "sprite"; }
+	virtual bool IsBuiltInFont() { return true; }
+};
+
+#endif /* SPRITEFONTCACHE_H */