/********************************************************************************************** * * 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 "raylib.h" // Declares module functions // Check if config flags have been externally provided on compilation line #if !defined(EXTERNAL_CONFIG_FLAGS) #include "config.h" // Defines module configuration flags #endif #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) #define STB_RECT_PACK_IMPLEMENTATION #include "external/stb_rect_pack.h" // Required for: ttf font rectangles packaging #define STBTT_STATIC #define STB_TRUETYPE_IMPLEMENTATION #include "external/stb_truetype.h" // Required for: ttf font data reading #endif //---------------------------------------------------------------------------------- // Defines and Macros //---------------------------------------------------------------------------------- #define MAX_FORMATTEXT_LENGTH 512 #define MAX_SUBTEXT_LENGTH 512 //---------------------------------------------------------------------------------- // 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 //---------------------------------------------------------------------------------- #if defined(SUPPORT_FILEFORMAT_FNT) static Font LoadBMFont(const char *fileName); // Load a BMFont file (AngelCode font file) #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... } 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 = (float)currentPosX; defaultFont.chars[i].rec.y = (float)(charsDivisor + currentLine*(charsHeight + charsDivisor)); defaultFont.chars[i].rec.width = (float)charsWidth[i]; defaultFont.chars[i].rec.height = (float)charsHeight; testPosX += (int)(defaultFont.chars[i].rec.width + (float)charsDivisor); if (testPosX >= defaultFont.texture.width) { currentLine++; currentPosX = 2*charsDivisor + charsWidth[i]; testPosX = currentPosX; defaultFont.chars[i].rec.x = (float)charsDivisor; defaultFont.chars[i].rec.y = (float)(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 = (int)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 GetFontDefault() { #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 sprite font Font font = { 0 }; #if defined(SUPPORT_FILEFORMAT_TTF) if (IsFileExtension(fileName, ".ttf") || IsFileExtension(fileName, ".otf")) font = LoadFontEx(fileName, DEFAULT_TTF_FONTSIZE, DEFAULT_TTF_NUMCHARS, NULL); else #endif #if defined(SUPPORT_FILEFORMAT_FNT) if (IsFileExtension(fileName, ".fnt")) font = LoadBMFont(fileName); else #endif { Image image = LoadImage(fileName); if (image.data != NULL) font = LoadFontFromImage(image, MAGENTA, DEFAULT_FIRST_CHAR); UnloadImage(image); } if (font.texture.id == 0) { TraceLog(LOG_WARNING, "[%s] Font could not be loaded, using default font", fileName); font = GetFontDefault(); } else SetTextureFilter(font.texture, FILTER_POINT); // By default we set point filter (best performance) return font; } // 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 font = { 0 }; font.baseSize = fontSize; font.charsCount = (charsCount > 0) ? charsCount : 95; font.chars = LoadFontData(fileName, font.baseSize, fontChars, font.charsCount, FONT_DEFAULT); if (font.chars != NULL) { Image atlas = GenImageFontAtlas(font.chars, font.charsCount, font.baseSize, 2, 0); font.texture = LoadTextureFromImage(atlas); UnloadImage(atlas); } else font = GetFontDefault(); return font; } // Load an Image font file (XNA style) Font LoadFontFromImage(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 = (float)xPosToRead; tempCharRecs[index].y = (float)(lineSpacing + lineToRead*(charHeight + lineSpacing)); tempCharRecs[index].height = (float)charHeight; int charWidth = 0; while (!COLOR_EQUAL(pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead + charWidth], key)) charWidth++; tempCharRecs[index].width = (float)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 = (int)spriteFont.chars[0].rec.height; TraceLog(LOG_INFO, "Image file loaded correctly as Font"); return spriteFont; } // Load font data for further use // NOTE: Requires TTF font and can generate SDF data CharInfo *LoadFontData(const char *fileName, int fontSize, int *fontChars, int charsCount, int type) { // NOTE: Using some SDF generation default values, // trades off precision with ability to handle *smaller* sizes #define SDF_CHAR_PADDING 4 #define SDF_ON_EDGE_VALUE 128 #define SDF_PIXEL_DIST_SCALE 64.0f #define BITMAP_ALPHA_THRESHOLD 80 CharInfo *chars = NULL; // Load font data (including pixel data) from TTF file // NOTE: Loaded information should be enough to generate font image atlas, // using any packaging method FILE *fontFile = fopen(fileName, "rb"); // Load font file if (fontFile != NULL) { fseek(fontFile, 0, SEEK_END); long size = ftell(fontFile); // Get file size fseek(fontFile, 0, SEEK_SET); // Reset file pointer unsigned char *fontBuffer = (unsigned char *)malloc(size); fread(fontBuffer, size, 1, fontFile); fclose(fontFile); // Init font for data reading stbtt_fontinfo fontInfo; if (!stbtt_InitFont(&fontInfo, fontBuffer, 0)) TraceLog(LOG_WARNING, "Failed to init font!"); // Calculate font scale factor float scaleFactor = stbtt_ScaleForPixelHeight(&fontInfo, (float)fontSize); // Calculate font basic metrics // NOTE: ascent is equivalent to font baseline int ascent, descent, lineGap; stbtt_GetFontVMetrics(&fontInfo, &ascent, &descent, &lineGap); // In case no chars count provided, default to 95 charsCount = (charsCount > 0) ? charsCount : 95; // Fill fontChars in case not provided externally // NOTE: By default we fill charsCount consecutevely, starting at 32 (Space) int genFontChars = false; if (fontChars == NULL) { fontChars = (int *)malloc(charsCount*sizeof(int)); for (int i = 0; i < charsCount; i++) fontChars[i] = i + 32; genFontChars = true; } chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo)); // NOTE: Using simple packaging, one char after another for (int i = 0; i < charsCount; i++) { int chw = 0, chh = 0; // Character width and height (on generation) int ch = fontChars[i]; // Character value to get info for chars[i].value = ch; // Render a unicode codepoint to a bitmap // stbtt_GetCodepointBitmap() -- allocates and returns a bitmap // stbtt_GetCodepointBitmapBox() -- how big the bitmap must be // stbtt_MakeCodepointBitmap() -- renders into bitmap you provide if (type != FONT_SDF) chars[i].data = stbtt_GetCodepointBitmap(&fontInfo, scaleFactor, scaleFactor, ch, &chw, &chh, &chars[i].offsetX, &chars[i].offsetY); else if (ch != 32) chars[i].data = stbtt_GetCodepointSDF(&fontInfo, scaleFactor, ch, SDF_CHAR_PADDING, SDF_ON_EDGE_VALUE, SDF_PIXEL_DIST_SCALE, &chw, &chh, &chars[i].offsetX, &chars[i].offsetY); if (type == FONT_BITMAP) { // Aliased bitmap (black & white) font generation, avoiding anti-aliasing // NOTE: For optimum results, bitmap font should be generated at base pixel size for (int p = 0; p < chw*chh; p++) { if (chars[i].data[p] < BITMAP_ALPHA_THRESHOLD) chars[i].data[p] = 0; else chars[i].data[p] = 255; } } chars[i].rec.width = (float)chw; chars[i].rec.height = (float)chh; chars[i].offsetY += (int)((float)ascent*scaleFactor); // Get bounding box for character (may be offset to account for chars that dip above or below the line) int chX1, chY1, chX2, chY2; stbtt_GetCodepointBitmapBox(&fontInfo, ch, scaleFactor, scaleFactor, &chX1, &chY1, &chX2, &chY2); TraceLog(LOG_DEBUG, "Character box measures: %i, %i, %i, %i", chX1, chY1, chX2 - chX1, chY2 - chY1); TraceLog(LOG_DEBUG, "Character offsetY: %i", (int)((float)ascent*scaleFactor) + chY1); stbtt_GetCodepointHMetrics(&fontInfo, ch, &chars[i].advanceX, NULL); chars[i].advanceX *= scaleFactor; } free(fontBuffer); if (genFontChars) free(fontChars); } else TraceLog(LOG_WARNING, "[%s] TTF file could not be opened", fileName); return chars; } // Generate image font atlas using chars info // NOTE: Packing method: 0-Default, 1-Skyline Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int padding, int packMethod) { Image atlas = { 0 }; // In case no chars count provided we suppose default of 95 charsCount = (charsCount > 0) ? charsCount : 95; // Calculate image size based on required pixel area // NOTE 1: Image is forced to be squared and POT... very conservative! // NOTE 2: SDF font characters already contain an internal padding, // so image size would result bigger than default font type float requiredArea = 0; for (int i = 0; i < charsCount; i++) requiredArea += ((chars[i].rec.width + 2*padding)*(chars[i].rec.height + 2*padding)); float guessSize = sqrtf(requiredArea)*1.25f; int imageSize = (int)powf(2, ceilf(logf((float)guessSize)/logf(2))); // Calculate next POT atlas.width = imageSize; // Atlas bitmap width atlas.height = imageSize; // Atlas bitmap height atlas.data = (unsigned char *)calloc(1, atlas.width*atlas.height); // Create a bitmap to store characters (8 bpp) atlas.format = UNCOMPRESSED_GRAYSCALE; atlas.mipmaps = 1; // DEBUG: We can see padding in the generated image setting a gray background... //for (int i = 0; i < atlas.width*atlas.height; i++) ((unsigned char *)atlas.data)[i] = 100; if (packMethod == 0) // Use basic packing algorythm { int offsetX = padding; int offsetY = padding; // NOTE: Using simple packaging, one char after another for (int i = 0; i < charsCount; i++) { // Copy pixel data from fc.data to atlas for (int y = 0; y < (int)chars[i].rec.height; y++) { for (int x = 0; x < (int)chars[i].rec.width; x++) { ((unsigned char *)atlas.data)[(offsetY + y)*atlas.width + (offsetX + x)] = chars[i].data[y*(int)chars[i].rec.width + x]; } } chars[i].rec.x = (float)offsetX; chars[i].rec.y = (float)offsetY; // Move atlas position X for next character drawing offsetX += ((int)chars[i].rec.width + 2*padding); if (offsetX >= (atlas.width - (int)chars[i].rec.width - padding)) { offsetX = padding; // NOTE: Be careful on offsetY for SDF fonts, by default SDF // use an internal padding of 4 pixels, it means char rectangle // height is bigger than fontSize, it could be up to (fontSize + 8) offsetY += (fontSize + 2*padding); if (offsetY > (atlas.height - fontSize - padding)) break; } } } else if (packMethod == 1) // Use Skyline rect packing algorythm (stb_pack_rect) { TraceLog(LOG_DEBUG, "Using Skyline packing algorythm!"); stbrp_context *context = (stbrp_context *)malloc(sizeof(*context)); stbrp_node *nodes = (stbrp_node *)malloc(charsCount*sizeof(*nodes)); stbrp_init_target(context, atlas.width, atlas.height, nodes, charsCount); stbrp_rect *rects = (stbrp_rect *)malloc(charsCount*sizeof(stbrp_rect)); // Fill rectangles for packaging for (int i = 0; i < charsCount; i++) { rects[i].id = i; rects[i].w = (int)chars[i].rec.width + 2*padding; rects[i].h = (int)chars[i].rec.height + 2*padding; } // Package rectangles into atlas stbrp_pack_rects(context, rects, charsCount); for (int i = 0; i < charsCount; i++) { chars[i].rec.x = rects[i].x + (float)padding; chars[i].rec.y = rects[i].y + (float)padding; if (rects[i].was_packed) { // Copy pixel data from fc.data to atlas for (int y = 0; y < (int)chars[i].rec.height; y++) { for (int x = 0; x < (int)chars[i].rec.width; x++) { ((unsigned char *)atlas.data)[(rects[i].y + padding + y)*atlas.width + (rects[i].x + padding + x)] = chars[i].data[y*(int)chars[i].rec.width + x]; } } } else TraceLog(LOG_WARNING, "Character could not be packed: %i", i); } free(rects); free(nodes); free(context); } // TODO: Crop image if required for smaller size // Convert image data from GRAYSCALE to GRAY_ALPHA // WARNING: ImageAlphaMask(&atlas, atlas) does not work in this case, requires manual operation unsigned char *dataGrayAlpha = (unsigned char *)malloc(imageSize*imageSize*sizeof(unsigned char)*2); // Two channels for (int i = 0, k = 0; i < atlas.width*atlas.height; i++, k += 2) { dataGrayAlpha[k] = 255; dataGrayAlpha[k + 1] = ((unsigned char *)atlas.data)[i]; } free(atlas.data); atlas.data = dataGrayAlpha; atlas.format = UNCOMPRESSED_GRAY_ALPHA; return atlas; } // Unload Font from GPU memory (VRAM) void UnloadFont(Font font) { // NOTE: Make sure spriteFont is not default font (fallback) if (font.texture.id != GetFontDefault().texture.id) { UnloadTexture(font.texture); free(font.chars); TraceLog(LOG_DEBUG, "Unloaded sprite font data"); } } // 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); } // 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 (GetFontDefault().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(GetFontDefault(), 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 = 0.0f; unsigned char letter = 0; // Current character int index = 0; // 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); } } } // 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 (GetFontDefault().texture.id != 0) { int defaultFontSize = 10; // Default Font chars height in pixel if (fontSize < defaultFontSize) fontSize = defaultFontSize; int spacing = fontSize/defaultFontSize; vec = MeasureTextEx(GetFontDefault(), 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 = 0.0f; float tempTextWidth = 0.0f; // 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 } // 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] = { 0 }; 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; } // Split string into multiple strings // NOTE: Files count is returned by parameters pointer // NOTE: Allocated memory should be manually freed char **SplitText(char *text, char delimiter, int *strCount) { #define MAX_SUBSTRING_LENGTH 128 char **strings = NULL; int len = strlen(text); char *strDup = (char *)malloc(len + 1); strcpy(strDup, text); int counter = 1; // Count how many substrings we have on string for (int i = 0; i < len; i++) if (text[i] == delimiter) counter++; // Memory allocation for substrings strings = (char **)malloc(sizeof(char *)*counter); for (int i = 0; i < counter; i++) strings[i] = (char *)malloc(sizeof(char)*MAX_SUBSTRING_LENGTH); char *substrPtr = NULL; char delimiters[1] = { delimiter }; // Only caring for one delimiter substrPtr = strtok(strDup, delimiters); for (int i = 0; (i < counter) && (substrPtr != NULL); i++) { strcpy(strings[i], substrPtr); substrPtr = strtok(NULL, delimiters); } *strCount = counter; free(strDup); return strings; } // Check if two text string are equal bool IsEqualText(const char *text1, const char *text2) { bool result = false; if (strcmp(text1, text2) == 0) result = true; return result; } //---------------------------------------------------------------------------------- // Module specific Functions Definition //---------------------------------------------------------------------------------- #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] = { 0 }; char *searchPoint = NULL; int fontSize = 0; int texWidth = 0; int texHeight = 0; char texFileName[129]; int charsCount = 0; int base = 0; // Useless data FILE *fntFile = NULL; 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; ImageAlphaMask(&imCopy, imFont); font.texture = LoadTextureFromImage(imCopy); UnloadImage(imCopy); } else font.texture = LoadTextureFromImage(imFont); UnloadImage(imFont); free(texPath); // Fill font characters info data font.baseSize = fontSize; font.charsCount = charsCount; font.chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo)); 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){ (float)charX, (float)charY, (float)charWidth, (float)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 = GetFontDefault(); } else TraceLog(LOG_INFO, "[%s] Font loaded successfully", fileName); return font; } #endif