/********************************************************************************************** * * raylib.text - Basic functions to load Fonts and draw Text * * CONFIGURATION: * * #define SUPPORT_FILEFORMAT_FNT * #define SUPPORT_FILEFORMAT_TTF * Selected desired fileformats to be supported for loading. Some of those formats are * supported by default, to remove support, just comment unrequired #define in this module * * #define SUPPORT_DEFAULT_FONT * * DEPENDENCIES: * stb_truetype - Load TTF file and rasterize characters data * * * LICENSE: zlib/libpng * * Copyright (c) 2014-2018 Ramon Santamaria (@raysan5) * * This software is provided "as-is", without any express or implied warranty. In no event * will the authors be held liable for any damages arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, including commercial * applications, and to alter it and redistribute it freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not claim that you * wrote the original software. If you use this software in a product, an acknowledgment * in the product documentation would be appreciated but is not required. * * 2. Altered source versions must be plainly marked as such, and must not be misrepresented * as being the original software. * * 3. This notice may not be removed or altered from any source distribution. * **********************************************************************************************/ #include "config.h" // Defines module configuration flags #include "raylib.h" // Declares module functions #include // Required for: malloc(), free() #include // Required for: strlen() #include // Required for: va_list, va_start(), vfprintf(), va_end() #include // Required for: FILE, fopen(), fclose(), fscanf(), feof(), rewind(), fgets() #include "utils.h" // Required for: fopen() Android mapping #if defined(SUPPORT_FILEFORMAT_TTF) // Following libs are used on LoadTTF() #define STBTT_STATIC // Define stb_truetype functions static to this module #define STB_TRUETYPE_IMPLEMENTATION #include "external/stb_truetype.h" // Required for: stbtt_BakeFontBitmap() #endif // Rectangle packing functions (not used at the moment) //#define STB_RECT_PACK_IMPLEMENTATION //#include "stb_rect_pack.h" //---------------------------------------------------------------------------------- // Defines and Macros //---------------------------------------------------------------------------------- #define MAX_FORMATTEXT_LENGTH 256 #define MAX_SUBTEXT_LENGTH 256 //---------------------------------------------------------------------------------- // Types and Structures Definition //---------------------------------------------------------------------------------- // ... //---------------------------------------------------------------------------------- // Global variables //---------------------------------------------------------------------------------- #if defined(SUPPORT_DEFAULT_FONT) static Font defaultFont; // Default font provided by raylib // NOTE: defaultFont is loaded on InitWindow and disposed on CloseWindow [module: core] #endif //---------------------------------------------------------------------------------- // Other Modules Functions Declaration (required by text) //---------------------------------------------------------------------------------- //... //---------------------------------------------------------------------------------- // Module specific Functions Declaration //---------------------------------------------------------------------------------- static Font LoadImageFont(Image image, Color key, int firstChar); // Load a Image font file (XNA style) #if defined(SUPPORT_FILEFORMAT_FNT) static Font LoadBMFont(const char *fileName); // Load a BMFont file (AngelCode font file) #endif #if defined(SUPPORT_FILEFORMAT_TTF) static Font LoadTTF(const char *fileName, int fontSize, int charsCount, int *fontChars); // Load spritefont from TTF data #endif #if defined(SUPPORT_DEFAULT_FONT) extern void LoadDefaultFont(void); extern void UnloadDefaultFont(void); #endif //---------------------------------------------------------------------------------- // Module Functions Definition //---------------------------------------------------------------------------------- #if defined(SUPPORT_DEFAULT_FONT) // Load raylib default font extern void LoadDefaultFont(void) { #define BIT_CHECK(a,b) ((a) & (1u << (b))) // NOTE: Using UTF8 encoding table for Unicode U+0000..U+00FF Basic Latin + Latin-1 Supplement // http://www.utf8-chartable.de/unicode-utf8-table.pl defaultFont.charsCount = 224; // Number of chars included in our default font // Default font is directly defined here (data generated from a sprite font image) // This way, we reconstruct Font without creating large global variables // This data is automatically allocated to Stack and automatically deallocated at the end of this function int defaultFontData[512] = { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00200020, 0x0001b000, 0x00000000, 0x00000000, 0x8ef92520, 0x00020a00, 0x7dbe8000, 0x1f7df45f, 0x4a2bf2a0, 0x0852091e, 0x41224000, 0x10041450, 0x2e292020, 0x08220812, 0x41222000, 0x10041450, 0x10f92020, 0x3efa084c, 0x7d22103c, 0x107df7de, 0xe8a12020, 0x08220832, 0x05220800, 0x10450410, 0xa4a3f000, 0x08520832, 0x05220400, 0x10450410, 0xe2f92020, 0x0002085e, 0x7d3e0281, 0x107df41f, 0x00200000, 0x8001b000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xc0000fbe, 0xfbf7e00f, 0x5fbf7e7d, 0x0050bee8, 0x440808a2, 0x0a142fe8, 0x50810285, 0x0050a048, 0x49e428a2, 0x0a142828, 0x40810284, 0x0048a048, 0x10020fbe, 0x09f7ebaf, 0xd89f3e84, 0x0047a04f, 0x09e48822, 0x0a142aa1, 0x50810284, 0x0048a048, 0x04082822, 0x0a142fa0, 0x50810285, 0x0050a248, 0x00008fbe, 0xfbf42021, 0x5f817e7d, 0x07d09ce8, 0x00008000, 0x00000fe0, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000c0180, 0xdfbf4282, 0x0bfbf7ef, 0x42850505, 0x004804bf, 0x50a142c6, 0x08401428, 0x42852505, 0x00a808a0, 0x50a146aa, 0x08401428, 0x42852505, 0x00081090, 0x5fa14a92, 0x0843f7e8, 0x7e792505, 0x00082088, 0x40a15282, 0x08420128, 0x40852489, 0x00084084, 0x40a16282, 0x0842022a, 0x40852451, 0x00088082, 0xc0bf4282, 0xf843f42f, 0x7e85fc21, 0x3e0900bf, 0x00000000, 0x00000004, 0x00000000, 0x000c0180, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04000402, 0x41482000, 0x00000000, 0x00000800, 0x04000404, 0x4100203c, 0x00000000, 0x00000800, 0xf7df7df0, 0x514bef85, 0xbefbefbe, 0x04513bef, 0x14414500, 0x494a2885, 0xa28a28aa, 0x04510820, 0xf44145f0, 0x474a289d, 0xa28a28aa, 0x04510be0, 0x14414510, 0x494a2884, 0xa28a28aa, 0x02910a00, 0xf7df7df0, 0xd14a2f85, 0xbefbe8aa, 0x011f7be0, 0x00000000, 0x00400804, 0x20080000, 0x00000000, 0x00000000, 0x00600f84, 0x20080000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xac000000, 0x00000f01, 0x00000000, 0x00000000, 0x24000000, 0x00000f01, 0x00000000, 0x06000000, 0x24000000, 0x00000f01, 0x00000000, 0x09108000, 0x24fa28a2, 0x00000f01, 0x00000000, 0x013e0000, 0x2242252a, 0x00000f52, 0x00000000, 0x038a8000, 0x2422222a, 0x00000f29, 0x00000000, 0x010a8000, 0x2412252a, 0x00000f01, 0x00000000, 0x010a8000, 0x24fbe8be, 0x00000f01, 0x00000000, 0x0ebe8000, 0xac020000, 0x00000f01, 0x00000000, 0x00048000, 0x0003e000, 0x00000f00, 0x00000000, 0x00008000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000038, 0x8443b80e, 0x00203a03, 0x02bea080, 0xf0000020, 0xc452208a, 0x04202b02, 0xf8029122, 0x07f0003b, 0xe44b388e, 0x02203a02, 0x081e8a1c, 0x0411e92a, 0xf4420be0, 0x01248202, 0xe8140414, 0x05d104ba, 0xe7c3b880, 0x00893a0a, 0x283c0e1c, 0x04500902, 0xc4400080, 0x00448002, 0xe8208422, 0x04500002, 0x80400000, 0x05200002, 0x083e8e00, 0x04100002, 0x804003e0, 0x07000042, 0xf8008400, 0x07f00003, 0x80400000, 0x04000022, 0x00000000, 0x00000000, 0x80400000, 0x04000002, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800702, 0x1848a0c2, 0x84010000, 0x02920921, 0x01042642, 0x00005121, 0x42023f7f, 0x00291002, 0xefc01422, 0x7efdfbf7, 0xefdfa109, 0x03bbbbf7, 0x28440f12, 0x42850a14, 0x20408109, 0x01111010, 0x28440408, 0x42850a14, 0x2040817f, 0x01111010, 0xefc78204, 0x7efdfbf7, 0xe7cf8109, 0x011111f3, 0x2850a932, 0x42850a14, 0x2040a109, 0x01111010, 0x2850b840, 0x42850a14, 0xefdfbf79, 0x03bbbbf7, 0x001fa020, 0x00000000, 0x00001000, 0x00000000, 0x00002070, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x08022800, 0x00012283, 0x02430802, 0x01010001, 0x8404147c, 0x20000144, 0x80048404, 0x00823f08, 0xdfbf4284, 0x7e03f7ef, 0x142850a1, 0x0000210a, 0x50a14684, 0x528a1428, 0x142850a1, 0x03efa17a, 0x50a14a9e, 0x52521428, 0x142850a1, 0x02081f4a, 0x50a15284, 0x4a221428, 0xf42850a1, 0x03efa14b, 0x50a16284, 0x4a521428, 0x042850a1, 0x0228a17a, 0xdfbf427c, 0x7e8bf7ef, 0xf7efdfbf, 0x03efbd0b, 0x00000000, 0x04000000, 0x00000000, 0x00000008, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00200508, 0x00840400, 0x11458122, 0x00014210, 0x00514294, 0x51420800, 0x20a22a94, 0x0050a508, 0x00200000, 0x00000000, 0x00050000, 0x08000000, 0xfefbefbe, 0xfbefbefb, 0xfbeb9114, 0x00fbefbe, 0x20820820, 0x8a28a20a, 0x8a289114, 0x3e8a28a2, 0xfefbefbe, 0xfbefbe0b, 0x8a289114, 0x008a28a2, 0x228a28a2, 0x08208208, 0x8a289114, 0x088a28a2, 0xfefbefbe, 0xfbefbefb, 0xfa2f9114, 0x00fbefbe, 0x00000000, 0x00000040, 0x00000000, 0x00000000, 0x00000000, 0x00000020, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00210100, 0x00000004, 0x00000000, 0x00000000, 0x14508200, 0x00001402, 0x00000000, 0x00000000, 0x00000010, 0x00000020, 0x00000000, 0x00000000, 0xa28a28be, 0x00002228, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022e8, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022a8, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022e8, 0x00000000, 0x00000000, 0xbefbefbe, 0x00003e2f, 0x00000000, 0x00000000, 0x00000004, 0x00002028, 0x00000000, 0x00000000, 0x80000000, 0x00003e0f, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }; int charsHeight = 10; int charsDivisor = 1; // Every char is separated from the consecutive by a 1 pixel divisor, horizontally and vertically int charsWidth[224] = { 3, 1, 4, 6, 5, 7, 6, 2, 3, 3, 5, 5, 2, 4, 1, 7, 5, 2, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 3, 4, 3, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 5, 6, 5, 7, 6, 6, 6, 6, 6, 6, 7, 6, 7, 7, 6, 6, 6, 2, 7, 2, 3, 5, 2, 5, 5, 5, 5, 5, 4, 5, 5, 1, 2, 5, 2, 5, 5, 5, 5, 5, 5, 5, 4, 5, 5, 5, 5, 5, 5, 3, 1, 3, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, 7, 1, 5, 3, 7, 3, 5, 4, 1, 7, 4, 3, 5, 3, 3, 2, 5, 6, 1, 2, 2, 3, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 7, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 6, 6, 6, 4, 6, 5, 5, 5, 5, 5, 5, 9, 5, 5, 5, 5, 5, 2, 2, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 5 }; // Re-construct image from defaultFontData and generate OpenGL texture //---------------------------------------------------------------------- int imWidth = 128; int imHeight = 128; Color *imagePixels = (Color *)malloc(imWidth*imHeight*sizeof(Color)); for (int i = 0; i < imWidth*imHeight; i++) imagePixels[i] = BLANK; // Initialize array int counter = 0; // Font data elements counter // Fill imgData with defaultFontData (convert from bit to pixel!) for (int i = 0; i < imWidth*imHeight; i += 32) { for (int j = 31; j >= 0; j--) { if (BIT_CHECK(defaultFontData[counter], j)) imagePixels[i+j] = WHITE; } counter++; if (counter > 512) counter = 0; // Security check... } //FILE *myimage = fopen("default_font.raw", "wb"); //fwrite(image.pixels, 1, 128*128*4, myimage); //fclose(myimage); Image image = LoadImageEx(imagePixels, imWidth, imHeight); ImageFormat(&image, UNCOMPRESSED_GRAY_ALPHA); free(imagePixels); defaultFont.texture = LoadTextureFromImage(image); UnloadImage(image); // Reconstruct charSet using charsWidth[], charsHeight, charsDivisor, charsCount //------------------------------------------------------------------------------ // Allocate space for our characters info data // NOTE: This memory should be freed at end! --> CloseWindow() defaultFont.chars = (CharInfo *)malloc(defaultFont.charsCount*sizeof(CharInfo)); int currentLine = 0; int currentPosX = charsDivisor; int testPosX = charsDivisor; for (int i = 0; i < defaultFont.charsCount; i++) { defaultFont.chars[i].value = 32 + i; // First char is 32 defaultFont.chars[i].rec.x = currentPosX; defaultFont.chars[i].rec.y = charsDivisor + currentLine*(charsHeight + charsDivisor); defaultFont.chars[i].rec.width = charsWidth[i]; defaultFont.chars[i].rec.height = charsHeight; testPosX += (defaultFont.chars[i].rec.width + charsDivisor); if (testPosX >= defaultFont.texture.width) { currentLine++; currentPosX = 2*charsDivisor + charsWidth[i]; testPosX = currentPosX; defaultFont.chars[i].rec.x = charsDivisor; defaultFont.chars[i].rec.y = charsDivisor + currentLine*(charsHeight + charsDivisor); } else currentPosX = testPosX; // NOTE: On default font character offsets and xAdvance are not required defaultFont.chars[i].offsetX = 0; defaultFont.chars[i].offsetY = 0; defaultFont.chars[i].advanceX = 0; } defaultFont.baseSize = defaultFont.chars[0].rec.height; TraceLog(LOG_INFO, "[TEX ID %i] Default font loaded successfully", defaultFont.texture.id); } // Unload raylib default font extern void UnloadDefaultFont(void) { UnloadTexture(defaultFont.texture); free(defaultFont.chars); } #endif // SUPPORT_DEFAULT_FONT // Get the default font, useful to be used with extended parameters Font GetDefaultFont() { #if defined(SUPPORT_DEFAULT_FONT) return defaultFont; #else Font font = { 0 }; return font; #endif } // Load Font from file into GPU memory (VRAM) Font LoadFont(const char *fileName) { // Default hardcoded values for ttf file loading #define DEFAULT_TTF_FONTSIZE 32 // Font first character (32 - space) #define DEFAULT_TTF_NUMCHARS 95 // ASCII 32..126 is 95 glyphs #define DEFAULT_FIRST_CHAR 32 // Expected first char for image spritefont Font spriteFont = { 0 }; #if defined(SUPPORT_FILEFORMAT_TTF) if (IsFileExtension(fileName, ".ttf")) spriteFont = LoadFontEx(fileName, DEFAULT_TTF_FONTSIZE, 0, NULL); else #endif #if defined(SUPPORT_FILEFORMAT_FNT) if (IsFileExtension(fileName, ".fnt")) spriteFont = LoadBMFont(fileName); else #endif { Image image = LoadImage(fileName); if (image.data != NULL) spriteFont = LoadImageFont(image, MAGENTA, DEFAULT_FIRST_CHAR); UnloadImage(image); } if (spriteFont.texture.id == 0) { TraceLog(LOG_WARNING, "[%s] Font could not be loaded, using default font", fileName); spriteFont = GetDefaultFont(); } else SetTextureFilter(spriteFont.texture, FILTER_POINT); // By default we set point filter (best performance) return spriteFont; } // Load Font from TTF font file with generation parameters // NOTE: You can pass an array with desired characters, those characters should be available in the font // if array is NULL, default char set is selected 32..126 Font LoadFontEx(const char *fileName, int fontSize, int charsCount, int *fontChars) { Font spriteFont = { 0 }; int totalChars = 95; // Default charset [32..126] #if defined(SUPPORT_FILEFORMAT_TTF) if (IsFileExtension(fileName, ".ttf")) { if (charsCount != 0) totalChars = charsCount; if (fontChars == NULL) { fontChars = (int *)malloc(totalChars*sizeof(int)); for (int i = 0; i < totalChars; i++) fontChars[i] = i + 32; // Default first character: SPACE[32] } spriteFont = LoadTTF(fileName, fontSize, totalChars, fontChars); } #endif if (spriteFont.texture.id == 0) { TraceLog(LOG_WARNING, "[%s] Font could not be generated, using default font", fileName); spriteFont = GetDefaultFont(); } return spriteFont; } // Unload Font from GPU memory (VRAM) void UnloadFont(Font font) { // NOTE: Make sure spriteFont is not default font (fallback) if (font.texture.id != GetDefaultFont().texture.id) { UnloadTexture(font.texture); free(font.chars); TraceLog(LOG_DEBUG, "Unloaded sprite font data"); } } // Draw text (using default font) // NOTE: fontSize work like in any drawing program but if fontSize is lower than font-base-size, then font-base-size is used // NOTE: chars spacing is proportional to fontSize void DrawText(const char *text, int posX, int posY, int fontSize, Color color) { // Check if default font has been loaded if (GetDefaultFont().texture.id != 0) { Vector2 position = { (float)posX, (float)posY }; int defaultFontSize = 10; // Default Font chars height in pixel if (fontSize < defaultFontSize) fontSize = defaultFontSize; int spacing = fontSize/defaultFontSize; DrawTextEx(GetDefaultFont(), text, position, (float)fontSize, (float)spacing, color); } } // Draw text using Font // NOTE: chars spacing is NOT proportional to fontSize void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, float spacing, Color tint) { int length = strlen(text); int textOffsetX = 0; // Offset between characters int textOffsetY = 0; // Required for line break! float scaleFactor; unsigned char letter; // Current character int index; // Index position in sprite font scaleFactor = fontSize/font.baseSize; // NOTE: Some ugly hacks are made to support Latin-1 Extended characters directly // written in C code files (codified by default as UTF-8) for (int i = 0; i < length; i++) { if ((unsigned char)text[i] == '\n') { // NOTE: Fixed line spacing of 1.5 lines textOffsetY += (int)((font.baseSize + font.baseSize/2)*scaleFactor); textOffsetX = 0; } else { if ((unsigned char)text[i] == 0xc2) // UTF-8 encoding identification HACK! { // Support UTF-8 encoded values from [0xc2 0x80] -> [0xc2 0xbf](¿) letter = (unsigned char)text[i + 1]; index = GetGlyphIndex(font, (int)letter); i++; } else if ((unsigned char)text[i] == 0xc3) // UTF-8 encoding identification HACK! { // Support UTF-8 encoded values from [0xc3 0x80](À) -> [0xc3 0xbf](ÿ) letter = (unsigned char)text[i + 1]; index = GetGlyphIndex(font, (int)letter + 64); i++; } else index = GetGlyphIndex(font, (unsigned char)text[i]); if ((unsigned char)text[i] != ' ') { DrawTexturePro(font.texture, font.chars[index].rec, (Rectangle){ position.x + textOffsetX + font.chars[index].offsetX*scaleFactor, position.y + textOffsetY + font.chars[index].offsetY*scaleFactor, font.chars[index].rec.width*scaleFactor, font.chars[index].rec.height*scaleFactor }, (Vector2){ 0, 0 }, 0.0f, tint); } if (font.chars[index].advanceX == 0) textOffsetX += (int)(font.chars[index].rec.width*scaleFactor + spacing); else textOffsetX += (int)(font.chars[index].advanceX*scaleFactor + spacing); } } } // Formatting of text with variables to 'embed' const char *FormatText(const char *text, ...) { static char buffer[MAX_FORMATTEXT_LENGTH]; va_list args; va_start(args, text); vsprintf(buffer, text, args); va_end(args); return buffer; } // Get a piece of a text string const char *SubText(const char *text, int position, int length) { static char buffer[MAX_SUBTEXT_LENGTH]; int textLength = strlen(text); if (position >= textLength) { position = textLength - 1; length = 0; } if (length >= textLength) length = textLength; for (int c = 0 ; c < length ; c++) { *(buffer+c) = *(text+position); text++; } *(buffer+length) = '\0'; return buffer; } // Measure string width for default font int MeasureText(const char *text, int fontSize) { Vector2 vec = { 0.0f, 0.0f }; // Check if default font has been loaded if (GetDefaultFont().texture.id != 0) { int defaultFontSize = 10; // Default Font chars height in pixel if (fontSize < defaultFontSize) fontSize = defaultFontSize; int spacing = fontSize/defaultFontSize; vec = MeasureTextEx(GetDefaultFont(), text, (float)fontSize, (float)spacing); } return (int)vec.x; } // Measure string size for Font Vector2 MeasureTextEx(Font font, const char *text, float fontSize, float spacing) { int len = strlen(text); int tempLen = 0; // Used to count longer text line num chars int lenCounter = 0; float textWidth = 0; float tempTextWidth = 0; // Used to count longer text line width float textHeight = (float)font.baseSize; float scaleFactor = fontSize/(float)font.baseSize; for (int i = 0; i < len; i++) { lenCounter++; if (text[i] != '\n') { int index = GetGlyphIndex(font, (int)text[i]); if (font.chars[index].advanceX != 0) textWidth += font.chars[index].advanceX; else textWidth += (font.chars[index].rec.width + font.chars[index].offsetX); } else { if (tempTextWidth < textWidth) tempTextWidth = textWidth; lenCounter = 0; textWidth = 0; textHeight += ((float)font.baseSize*1.5f); // NOTE: Fixed line spacing of 1.5 lines } if (tempLen < lenCounter) tempLen = lenCounter; } if (tempTextWidth < textWidth) tempTextWidth = textWidth; Vector2 vec; vec.x = tempTextWidth*scaleFactor + (float)((tempLen - 1)*spacing); // Adds chars spacing to measure vec.y = textHeight*scaleFactor; return vec; } // Returns index position for a unicode character on spritefont int GetGlyphIndex(Font font, int character) { #define UNORDERED_CHARSET #if defined(UNORDERED_CHARSET) int index = 0; for (int i = 0; i < font.charsCount; i++) { if (font.chars[i].value == character) { index = i; break; } } return index; #else return (character - 32); #endif } // Shows current FPS on top-left corner // NOTE: Uses default font void DrawFPS(int posX, int posY) { // NOTE: We are rendering fps every second for better viewing on high framerates static int fps = 0; static int counter = 0; static int refreshRate = 20; if (counter < refreshRate) counter++; else { fps = GetFPS(); refreshRate = fps; counter = 0; } // NOTE: We have rounding errors every frame, so it oscillates a lot DrawText(FormatText("%2i FPS", fps), posX, posY, 20, LIME); } //---------------------------------------------------------------------------------- // Module specific Functions Definition //---------------------------------------------------------------------------------- // Load an Image font file (XNA style) static Font LoadImageFont(Image image, Color key, int firstChar) { #define COLOR_EQUAL(col1, col2) ((col1.r == col2.r)&&(col1.g == col2.g)&&(col1.b == col2.b)&&(col1.a == col2.a)) int charSpacing = 0; int lineSpacing = 0; int x = 0; int y = 0; // Default number of characters supported #define MAX_FONTCHARS 256 // We allocate a temporal arrays for chars data measures, // once we get the actual number of chars, we copy data to a sized arrays int tempCharValues[MAX_FONTCHARS]; Rectangle tempCharRecs[MAX_FONTCHARS]; Color *pixels = GetImageData(image); // Parse image data to get charSpacing and lineSpacing for (y = 0; y < image.height; y++) { for (x = 0; x < image.width; x++) { if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break; } if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break; } charSpacing = x; lineSpacing = y; int charHeight = 0; int j = 0; while (!COLOR_EQUAL(pixels[(lineSpacing + j)*image.width + charSpacing], key)) j++; charHeight = j; // Check array values to get characters: value, x, y, w, h int index = 0; int lineToRead = 0; int xPosToRead = charSpacing; // Parse image data to get rectangle sizes while ((lineSpacing + lineToRead*(charHeight + lineSpacing)) < image.height) { while ((xPosToRead < image.width) && !COLOR_EQUAL((pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead]), key)) { tempCharValues[index] = firstChar + index; tempCharRecs[index].x = xPosToRead; tempCharRecs[index].y = lineSpacing + lineToRead*(charHeight + lineSpacing); tempCharRecs[index].height = charHeight; int charWidth = 0; while (!COLOR_EQUAL(pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead + charWidth], key)) charWidth++; tempCharRecs[index].width = charWidth; index++; xPosToRead += (charWidth + charSpacing); } lineToRead++; xPosToRead = charSpacing; } TraceLog(LOG_DEBUG, "Font data parsed correctly from image"); // NOTE: We need to remove key color borders from image to avoid weird // artifacts on texture scaling when using FILTER_BILINEAR or FILTER_TRILINEAR for (int i = 0; i < image.height*image.width; i++) if (COLOR_EQUAL(pixels[i], key)) pixels[i] = BLANK; // Create a new image with the processed color data (key color replaced by BLANK) Image fontClear = LoadImageEx(pixels, image.width, image.height); free(pixels); // Free pixels array memory // Create spritefont with all data parsed from image Font spriteFont = { 0 }; spriteFont.texture = LoadTextureFromImage(fontClear); // Convert processed image to OpenGL texture spriteFont.charsCount = index; UnloadImage(fontClear); // Unload processed image once converted to texture // We got tempCharValues and tempCharsRecs populated with chars data // Now we move temp data to sized charValues and charRecs arrays spriteFont.chars = (CharInfo *)malloc(spriteFont.charsCount*sizeof(CharInfo)); for (int i = 0; i < spriteFont.charsCount; i++) { spriteFont.chars[i].value = tempCharValues[i]; spriteFont.chars[i].rec = tempCharRecs[i]; // NOTE: On image based fonts (XNA style), character offsets and xAdvance are not required (set to 0) spriteFont.chars[i].offsetX = 0; spriteFont.chars[i].offsetY = 0; spriteFont.chars[i].advanceX = 0; } spriteFont.baseSize = spriteFont.chars[0].rec.height; TraceLog(LOG_INFO, "Image file loaded correctly as Font"); return spriteFont; } #if defined(SUPPORT_FILEFORMAT_FNT) // Load a BMFont file (AngelCode font file) static Font LoadBMFont(const char *fileName) { #define MAX_BUFFER_SIZE 256 Font font = { 0 }; font.texture.id = 0; char buffer[MAX_BUFFER_SIZE]; char *searchPoint = NULL; int fontSize = 0; int texWidth, texHeight; char texFileName[129]; int charsCount = 0; int base; // Useless data FILE *fntFile; fntFile = fopen(fileName, "rt"); if (fntFile == NULL) { TraceLog(LOG_WARNING, "[%s] FNT file could not be opened", fileName); return font; } // NOTE: We skip first line, it contains no useful information fgets(buffer, MAX_BUFFER_SIZE, fntFile); //searchPoint = strstr(buffer, "size"); //sscanf(searchPoint, "size=%i", &fontSize); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "lineHeight"); sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i", &fontSize, &base, &texWidth, &texHeight); TraceLog(LOG_DEBUG, "[%s] Font size: %i", fileName, fontSize); TraceLog(LOG_DEBUG, "[%s] Font texture scale: %ix%i", fileName, texWidth, texHeight); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "file"); sscanf(searchPoint, "file=\"%128[^\"]\"", texFileName); TraceLog(LOG_DEBUG, "[%s] Font texture filename: %s", fileName, texFileName); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "count"); sscanf(searchPoint, "count=%i", &charsCount); TraceLog(LOG_DEBUG, "[%s] Font num chars: %i", fileName, charsCount); // Compose correct path using route of .fnt file (fileName) and texFileName char *texPath = NULL; char *lastSlash = NULL; lastSlash = strrchr(fileName, '/'); // NOTE: We need some extra space to avoid memory corruption on next allocations! texPath = malloc(strlen(fileName) - strlen(lastSlash) + strlen(texFileName) + 4); // NOTE: strcat() and strncat() required a '\0' terminated string to work! *texPath = '\0'; strncat(texPath, fileName, strlen(fileName) - strlen(lastSlash) + 1); strncat(texPath, texFileName, strlen(texFileName)); TraceLog(LOG_DEBUG, "[%s] Font texture loading path: %s", fileName, texPath); Image imFont = LoadImage(texPath); if (imFont.format == UNCOMPRESSED_GRAYSCALE) { Image imCopy = ImageCopy(imFont); for (int i = 0; i < imCopy.width*imCopy.height; i++) ((unsigned char *)imCopy.data)[i] = 0xff; // WHITE pixel ImageAlphaMask(&imCopy, imFont); font.texture = LoadTextureFromImage(imCopy); UnloadImage(imCopy); } else font.texture = LoadTextureFromImage(imFont); font.baseSize = fontSize; font.charsCount = charsCount; font.chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo)); UnloadImage(imFont); free(texPath); int charId, charX, charY, charWidth, charHeight, charOffsetX, charOffsetY, charAdvanceX; for (int i = 0; i < charsCount; i++) { fgets(buffer, MAX_BUFFER_SIZE, fntFile); sscanf(buffer, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i", &charId, &charX, &charY, &charWidth, &charHeight, &charOffsetX, &charOffsetY, &charAdvanceX); // Save data properly in sprite font font.chars[i].value = charId; font.chars[i].rec = (Rectangle){ charX, charY, charWidth, charHeight }; font.chars[i].offsetX = charOffsetX; font.chars[i].offsetY = charOffsetY; font.chars[i].advanceX = charAdvanceX; } fclose(fntFile); if (font.texture.id == 0) { UnloadFont(font); font = GetDefaultFont(); } else TraceLog(LOG_INFO, "[%s] Font loaded successfully", fileName); return font; } #endif #if defined(SUPPORT_FILEFORMAT_TTF) // Generate a sprite font from TTF file data (font size required) // TODO: Review texture packing method and generation (use oversampling) static Font LoadTTF(const char *fileName, int fontSize, int charsCount, int *fontChars) { #define MAX_TTF_SIZE 16 // Maximum ttf file size in MB // NOTE: Font texture size is predicted (being as much conservative as possible) // Predictive method consist of supposing same number of chars by line-column (sqrtf) // and a maximum character width of 3/4 of fontSize... it worked ok with all my tests... // Calculate next power-of-two value float guessSize = ceilf((float)fontSize*3/4)*ceilf(sqrtf((float)charsCount)); int textureSize = (int)powf(2, ceilf(logf((float)guessSize)/logf(2))); // Calculate next POT TraceLog(LOG_INFO, "TTF spritefont loading: Predicted texture size: %ix%i", textureSize, textureSize); unsigned char *ttfBuffer = (unsigned char *)malloc(MAX_TTF_SIZE*1024*1024); unsigned char *dataBitmap = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)); // One channel bitmap returned! stbtt_bakedchar *charData = (stbtt_bakedchar *)malloc(sizeof(stbtt_bakedchar)*charsCount); Font font = { 0 }; FILE *ttfFile = fopen(fileName, "rb"); if (ttfFile == NULL) { TraceLog(LOG_WARNING, "[%s] TTF file could not be opened", fileName); return font; } // NOTE: We try reading up to 16 MB of elements of 1 byte fread(ttfBuffer, 1, MAX_TTF_SIZE*1024*1024, ttfFile); // Find font baseline (vertical origin of the font) // NOTE: This value is required because y-offset depends on it! stbtt_fontinfo fontInfo; int ascent, baseline; float scale; stbtt_InitFont(&fontInfo, ttfBuffer, 0); scale = stbtt_ScaleForPixelHeight(&fontInfo, fontSize); stbtt_GetFontVMetrics(&fontInfo, &ascent, 0, 0); baseline = (int)(ascent*scale); if (fontChars[0] != 32) TraceLog(LOG_WARNING, "TTF spritefont loading: first character is not SPACE(32) character"); // NOTE: Using stb_truetype crappy packing method, no guarantee the font fits the image... // TODO: Replace this function by a proper packing method and support random chars order, // we already receive a list (fontChars) with the ordered expected characters int result = stbtt_BakeFontBitmap(ttfBuffer, 0, fontSize, dataBitmap, textureSize, textureSize, fontChars[0], charsCount, charData); //if (result > 0) TraceLog(LOG_INFO, "TTF spritefont loading: first unused row of generated bitmap: %i", result); if (result < 0) TraceLog(LOG_WARNING, "TTF spritefont loading: Not all the characters fit in the font"); free(ttfBuffer); // Convert image data from grayscale to to UNCOMPRESSED_GRAY_ALPHA unsigned char *dataGrayAlpha = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)*2); // Two channels for (int i = 0, k = 0; i < textureSize*textureSize; i++, k += 2) { dataGrayAlpha[k] = 255; dataGrayAlpha[k + 1] = dataBitmap[i]; } free(dataBitmap); // Sprite font generation from TTF extracted data Image image; image.width = textureSize; image.height = textureSize; image.mipmaps = 1; image.format = UNCOMPRESSED_GRAY_ALPHA; image.data = dataGrayAlpha; font.texture = LoadTextureFromImage(image); //SavePNG("generated_ttf_image.png", (unsigned char *)image.data, image.width, image.height, 2); UnloadImage(image); // Unloads dataGrayAlpha font.baseSize = fontSize; font.charsCount = charsCount; font.chars = (CharInfo *)malloc(font.charsCount*sizeof(CharInfo)); for (int i = 0; i < font.charsCount; i++) { font.chars[i].value = fontChars[i]; font.chars[i].rec.x = (int)charData[i].x0; font.chars[i].rec.y = (int)charData[i].y0; font.chars[i].rec.width = (int)charData[i].x1 - (int)charData[i].x0; font.chars[i].rec.height = (int)charData[i].y1 - (int)charData[i].y0; font.chars[i].offsetX = charData[i].xoff; font.chars[i].offsetY = baseline + charData[i].yoff; font.chars[i].advanceX = (int)charData[i].xadvance; } free(charData); return font; } #endif