src/FreeTypeGX.h Source File

00001 /* 
00002  * FreeTypeGX is a wrapper class for libFreeType which renders a compiled
00003  * FreeType parsable font into a GX texture for Wii homebrew development.
00004  * Copyright (C) 2008 Armin Tamzarian
00005  * 
00006  * This file is part of FreeTypeGX.
00007  * 
00008  * FreeTypeGX is free software: you can redistribute it and/or modify
00009  * it under the terms of the GNU Lesser General Public License as published
00010  * by the Free Software Foundation, either version 3 of the License, or
00011  * (at your option) any later version.
00012  * 
00013  * FreeTypeGX is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU Lesser General Public License for more details.
00017  * 
00018  * You should have received a copy of the GNU Lesser General Public License
00019  * along with FreeTypeGX.  If not, see <http://www.gnu.org/licenses/>.
00020  */
00021 
00134 #ifndef FREETYPEGX_H_
00135 #define FREETYPEGX_H_
00136 
00137 #include <gccore.h>
00138 #include <ft2build.h>
00139 #include FT_FREETYPE_H
00140 #include <Metaphrasis.h>
00141 
00142 #include <malloc.h>
00143 #include <string.h>
00144 #include <map>
00145 
00146 
00147 extern char fontface[]; 
00148 extern int fontsize;    
00154 typedef struct fontCharData_ {
00155         uint16_t glyphAdvanceX; 
00157         uint16_t textureWidth;  
00158         uint16_t textureHeight; 
00160         uint16_t renderOffsetY; 
00161         uint16_t renderOffsetMax;       
00162         uint16_t renderOffsetMin;       
00164         uint32_t* glyphDataTexture;     
00165 } fontCharData;
00166 
00167 #define _TEXT(t) L ## t 
00178 class FreeTypeGX {
00179 
00180         private:
00181                 FT_Library ftLibrary;   
00182                 FT_Face ftFace;                 
00183                 FT_GlyphSlot ftSlot;    
00185                 uint8_t textureFormat;          
00186                 uint8_t positionFormat;         
00187                 std::map<wchar_t, fontCharData> fontData; 
00189                 static uint16_t adjustTextureWidth(uint16_t textureWidth, uint8_t textureFormat);
00190                 static uint16_t adjustTextureHeight(uint16_t textureHeight, uint8_t textureFormat);
00191 
00192                 void clearFontData();
00193                 uint16_t cacheAllGlyphData();
00194                 fontCharData *cacheGlyphData(wchar_t charCode);
00195                 void loadGlyphData(FT_Bitmap *bmp, fontCharData *charData);
00196                 void copyTextureToFramebuffer(GXTexObj *texObj, uint16_t texWidth, uint16_t texHeight, uint16_t screenX, uint16_t screenY, GXColor color);
00197 
00198         public:
00199                 FreeTypeGX(uint8_t textureFormat = GX_TF_RGBA8, uint8_t positionFormat = GX_POS_XYZ);
00200                 ~FreeTypeGX();
00201 
00202                 uint16_t loadFont(uint8_t* fontBuffer, FT_Long bufferSize, FT_UInt pointSize, bool cacheAll = false);
00203                 uint16_t loadFont(const uint8_t* fontBuffer, FT_Long bufferSize, FT_UInt pointSize, bool cacheAll = false);
00204 
00205                 uint16_t drawText(uint16_t x, uint16_t y, wchar_t *text, GXColor color);
00206                 uint16_t drawText(uint16_t x, uint16_t y, wchar_t *text);
00207                 uint16_t drawText(uint16_t x, uint16_t y, wchar_t const *text, GXColor color);
00208                 uint16_t drawText(uint16_t x, uint16_t y, wchar_t const *text);
00209 
00210                 uint16_t getWidth(wchar_t *text);
00211                 uint16_t getWidth(wchar_t const *text);
00212                 uint16_t getHeight(wchar_t *text);
00213                 uint16_t getHeight(wchar_t const *text);
00214 };
00215 
00216 #endif /* FREETYPEGX_H_ */