FreeTypeGX.h

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/* 
 * FreeTypeGX is a wrapper class for libFreeType which renders a compiled
 * FreeType parsable font into a GX texture for Wii homebrew development.
 * Copyright (C) 2008 Armin Tamzarian
 * 
 * This file is part of FreeTypeGX.
 * 
 * FreeTypeGX is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * FreeTypeGX 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with FreeTypeGX.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef FREETYPE_H_
#define FREETYPE_H_

#include <malloc.h>
#include <map>
#include <ft2build.h>
#include FT_FREETYPE_H


extern char fontface[]; 
extern int fontsize;    
typedef struct fontCharData_ {
        u16 glyphAdvanceX;      
        u16 textureWidth;       
        u16 textureHeight;      
        u16 renderOffsetY;      
        u32* glyphDataTexture;  
} fontCharData;

#define _TEXT(t) L ## t 
#define UNICODE_MAX 256 
class FreeTypeGX {

        private:
                FT_Library ftLibrary;   
                FT_Face ftFace;                 
                FT_GlyphSlot ftSlot;    
                u8 textureFormat;               
                std::map<wchar_t, fontCharData> fontData; 
                static u16 adjustTextureWidth(u16 textureWidth, u8 textureFormat);
                static u16 adjustTextureHeight(u16 textureHeight, u8 textureFormat);

                void cacheFontData();
                void loadFontData(FT_Bitmap *bmp, fontCharData *charData);
                
                void convertBufferToI4(u32* glyphData, fontCharData *charData);
                void convertBufferToI8(u32* glyphData, fontCharData *charData);
                void convertBufferToIA4(u32* glyphData, fontCharData *charData);
                void convertBufferToIA8(u32* glyphData, fontCharData *charData);
                void convertBufferToRGBA8(u32* glyphData, fontCharData *charData);
                void convertBufferToRGB565(u32* glyphData, fontCharData *charData);
                void convertBufferToRGB5A3(u32* glyphData, fontCharData *charData);
                void copyTextureToFramebuffer(GXTexObj *texObj, u16 texWidth, u16 texHeight, u16 screenX, u16 screenY, GXColor color);

        public:
                FreeTypeGX(FT_UInt pointSize, u8 textureFormat = GX_TF_RGBA8);
                ~FreeTypeGX();

                static u8 convertRGBAToIA4(u32 rgba);
                static u16 convertRGBAToIA8(u32 rgba);
                static u16 convertRGBAToRGB565(u32 rgba);
                static u16 convertRGBAToRGB5A3(u32 rgba);

                u16 drawText(u16 x, u16 y, wchar_t *text, GXColor color);
                u16 drawText(u16 x, u16 y, wchar_t *text);
                u16 drawText(u16 x, u16 y, wchar_t const *text, GXColor color);
                u16 drawText(u16 x, u16 y, wchar_t const *text);

};

#endif /* FREETYPE_H_ */

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