/********************************************************************************************** * * 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 * Load default raylib font on initialization to be used by DrawText() and MeasureText(). * If no default font loaded, DrawTextEx() and MeasureTextEx() are required. * * #define TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH * TextSplit() function static buffer max size * * #define TEXTSPLIT_MAX_SUBSTRINGS_COUNT * TextSplit() function static substrings pointers array (pointing to static buffer) * * * DEPENDENCIES: * stb_truetype - Load TTF file and rasterize characters data * stb_rect_pack - Rectangles packing algorythms, required for font atlas generation * * * LICENSE: zlib/libpng * * Copyright (c) 2013-2020 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 // Required for: toupper(), tolower() #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_TEXT_BUFFER_LENGTH 1024 // Size of internal static buffers used on some functions: // TextFormat(), TextSubtext(), TextToUpper(), TextToLower(), TextToPascal() #define MAX_TEXT_UNICODE_CHARS 512 // Maximum number of unicode codepoints #if !defined(TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH) #define TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH 1024 // Size of static buffer: TextSplit() #endif #if !defined(TEXTSPLIT_MAX_SUBSTRINGS_COUNT) #define TEXTSPLIT_MAX_SUBSTRINGS_COUNT 128 // Size of static pointers array: TextSplit() #endif //---------------------------------------------------------------------------------- // Types and Structures Definition //---------------------------------------------------------------------------------- // ... //---------------------------------------------------------------------------------- // Global variables //---------------------------------------------------------------------------------- #if defined(SUPPORT_DEFAULT_FONT) static Font defaultFont = { 0 }; // 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 LoadFontDefault(void); extern void UnloadFontDefault(void); #endif //---------------------------------------------------------------------------------- // Module Functions Definition //---------------------------------------------------------------------------------- #if defined(SUPPORT_DEFAULT_FONT) // Load raylib default font extern void LoadFontDefault(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 // Ref: 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 unsigned 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 *)RL_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 imFont = LoadImageEx(imagePixels, imWidth, imHeight); ImageFormat(&imFont, UNCOMPRESSED_GRAY_ALPHA); RL_FREE(imagePixels); defaultFont.texture = LoadTextureFromImage(imFont); // 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 *)RL_MALLOC(defaultFont.charsCount*sizeof(CharInfo)); defaultFont.recs = (Rectangle *)RL_MALLOC(defaultFont.charsCount*sizeof(Rectangle)); 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.recs[i].x = (float)currentPosX; defaultFont.recs[i].y = (float)(charsDivisor + currentLine*(charsHeight + charsDivisor)); defaultFont.recs[i].width = (float)charsWidth[i]; defaultFont.recs[i].height = (float)charsHeight; testPosX += (int)(defaultFont.recs[i].width + (float)charsDivisor); if (testPosX >= defaultFont.texture.width) { currentLine++; currentPosX = 2*charsDivisor + charsWidth[i]; testPosX = currentPosX; defaultFont.recs[i].x = (float)charsDivisor; defaultFont.recs[i].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; // Fill character image data from fontClear data defaultFont.chars[i].image = ImageFromImage(imFont, defaultFont.recs[i]); } UnloadImage(imFont); defaultFont.baseSize = (int)defaultFont.recs[0].height; TraceLog(LOG_INFO, "[TEX ID %i] Default font loaded successfully", defaultFont.texture.id); } // Unload raylib default font extern void UnloadFontDefault(void) { for (int i = 0; i < defaultFont.charsCount; i++) UnloadImage(defaultFont.chars[i].image); UnloadTexture(defaultFont.texture); RL_FREE(defaultFont.chars); RL_FREE(defaultFont.recs); } #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;.otf")) font = LoadFontEx(fileName, DEFAULT_TTF_FONTSIZE, NULL, DEFAULT_TTF_NUMCHARS); 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 *fontChars, int charsCount) { Font font = { 0 }; font.baseSize = fontSize; font.charsCount = (charsCount > 0)? charsCount : 95; font.chars = LoadFontData(fileName, font.baseSize, fontChars, font.charsCount, FONT_DEFAULT); #if defined(SUPPORT_FILEFORMAT_TTF) if (font.chars != NULL) { Image atlas = GenImageFontAtlas(font.chars, &font.recs, font.charsCount, font.baseSize, 2, 0); font.texture = LoadTextureFromImage(atlas); // Update chars[i].image to use alpha, required to be used on ImageDrawText() for (int i = 0; i < font.charsCount; i++) { UnloadImage(font.chars[i].image); font.chars[i].image = ImageFromImage(atlas, font.recs[i]); } UnloadImage(atlas); } else font = GetFontDefault(); #else UnloadFont(font); font = GetFontDefault(); #endif 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); RL_FREE(pixels); // Free pixels array memory // Create spritefont with all data parsed from image Font font = { 0 }; font.texture = LoadTextureFromImage(fontClear); // Convert processed image to OpenGL texture font.charsCount = index; // We got tempCharValues and tempCharsRecs populated with chars data // Now we move temp data to sized charValues and charRecs arrays font.chars = (CharInfo *)RL_MALLOC(font.charsCount*sizeof(CharInfo)); font.recs = (Rectangle *)RL_MALLOC(font.charsCount*sizeof(Rectangle)); for (int i = 0; i < font.charsCount; i++) { font.chars[i].value = tempCharValues[i]; // Get character rectangle in the font atlas texture font.recs[i] = tempCharRecs[i]; // NOTE: On image based fonts (XNA style), character offsets and xAdvance are not required (set to 0) font.chars[i].offsetX = 0; font.chars[i].offsetY = 0; font.chars[i].advanceX = 0; // Fill character image data from fontClear data font.chars[i].image = ImageFromImage(fontClear, tempCharRecs[i]); } UnloadImage(fontClear); // Unload processed image once converted to texture font.baseSize = (int)font.recs[0].height; TraceLog(LOG_INFO, "Image file loaded correctly as Font"); return font; } // 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; #if defined(SUPPORT_FILEFORMAT_TTF) // 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 *)RL_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 *)RL_MALLOC(charsCount*sizeof(int)); for (int i = 0; i < charsCount; i++) fontChars[i] = i + 32; genFontChars = true; } chars = (CharInfo *)RL_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].image.data = stbtt_GetCodepointBitmap(&fontInfo, scaleFactor, scaleFactor, ch, &chw, &chh, &chars[i].offsetX, &chars[i].offsetY); else if (ch != 32) chars[i].image.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); else chars[i].image.data = NULL; 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 (((unsigned char *)chars[i].image.data)[p] < BITMAP_ALPHA_THRESHOLD) ((unsigned char *)chars[i].image.data)[p] = 0; else ((unsigned char *)chars[i].image.data)[p] = 255; } } // Load characters images chars[i].image.width = chw; chars[i].image.height = chh; chars[i].image.mipmaps = 1; chars[i].image.format = UNCOMPRESSED_GRAYSCALE; 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; } RL_FREE(fontBuffer); if (genFontChars) RL_FREE(fontChars); } else TraceLog(LOG_WARNING, "[%s] TTF file could not be opened", fileName); #else TraceLog(LOG_WARNING, "[%s] TTF support is disabled", fileName); #endif return chars; } // Generate image font atlas using chars info // NOTE: Packing method: 0-Default, 1-Skyline #if defined(SUPPORT_FILEFORMAT_TTF) Image GenImageFontAtlas(const CharInfo *chars, Rectangle **charRecs, int charsCount, int fontSize, int padding, int packMethod) { Image atlas = { 0 }; *charRecs = NULL; // In case no chars count provided we suppose default of 95 charsCount = (charsCount > 0)? charsCount : 95; // NOTE: Rectangles memory is loaded here! Rectangle *recs = (Rectangle *)RL_MALLOC(charsCount*sizeof(Rectangle)); // 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].image.width + 2*padding)*(chars[i].image.height + 2*padding)); float guessSize = sqrtf(requiredArea)*1.3f; 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 *)RL_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 < chars[i].image.height; y++) { for (int x = 0; x < chars[i].image.width; x++) { ((unsigned char *)atlas.data)[(offsetY + y)*atlas.width + (offsetX + x)] = ((unsigned char *)chars[i].image.data)[y*chars[i].image.width + x]; } } // Fill chars rectangles in atlas info recs[i].x = (float)offsetX; recs[i].y = (float)offsetY; recs[i].width = (float)chars[i].image.width; recs[i].height = (float)chars[i].image.height; // Move atlas position X for next character drawing offsetX += (chars[i].image.width + 2*padding); if (offsetX >= (atlas.width - chars[i].image.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 *)RL_MALLOC(sizeof(*context)); stbrp_node *nodes = (stbrp_node *)RL_MALLOC(charsCount*sizeof(*nodes)); stbrp_init_target(context, atlas.width, atlas.height, nodes, charsCount); stbrp_rect *rects = (stbrp_rect *)RL_MALLOC(charsCount*sizeof(stbrp_rect)); // Fill rectangles for packaging for (int i = 0; i < charsCount; i++) { rects[i].id = i; rects[i].w = chars[i].image.width + 2*padding; rects[i].h = chars[i].image.height + 2*padding; } // Package rectangles into atlas stbrp_pack_rects(context, rects, charsCount); for (int i = 0; i < charsCount; i++) { // It return char rectangles in atlas recs[i].x = rects[i].x + (float)padding; recs[i].y = rects[i].y + (float)padding; recs[i].width = (float)chars[i].image.width; recs[i].height = (float)chars[i].image.height; if (rects[i].was_packed) { // Copy pixel data from fc.data to atlas for (int y = 0; y < chars[i].image.height; y++) { for (int x = 0; x < chars[i].image.width; x++) { ((unsigned char *)atlas.data)[(rects[i].y + padding + y)*atlas.width + (rects[i].x + padding + x)] = ((unsigned char *)chars[i].image.data)[y*chars[i].image.width + x]; } } } else TraceLog(LOG_WARNING, "Character could not be packed: %i", i); } RL_FREE(rects); RL_FREE(nodes); RL_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 *)RL_MALLOC(atlas.width*atlas.height*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]; } RL_FREE(atlas.data); atlas.data = dataGrayAlpha; atlas.format = UNCOMPRESSED_GRAY_ALPHA; *charRecs = recs; return atlas; } #endif // Unload Font from GPU memory (VRAM) void UnloadFont(Font font) { // NOTE: Make sure font is not default font (fallback) if (font.texture.id != GetFontDefault().texture.id) { for (int i = 0; i < font.charsCount; i++) UnloadImage(font.chars[i].image); UnloadTexture(font.texture); RL_FREE(font.chars); RL_FREE(font.recs); 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 certain time 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; } // TODO: Find a better way to calculate FPS, maybe calculate the mean of multiple measures? // NOTE: We have rounding errors every frame, so it oscillates a lot DrawText(TextFormat("%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 one character (codepoint) void DrawTextCodepoint(Font font, int codepoint, Vector2 position, float scale, Color tint) { // Character index position in sprite font // NOTE: In case a codepoint is not available in the font, index returned points to '?' int index = GetGlyphIndex(font, codepoint); // Character rectangle on screen // NOTE: Quad is scaled proportionally to base character width-height Rectangle rec = { position.x, position.y, font.recs[index].width*scale, font.recs[index].height*scale }; DrawTexturePro(font.texture, font.recs[index], rec, (Vector2){ 0, 0 }, 0.0f, tint); } // 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); // Total length in bytes of the text, scanned by codepoints in loop int textOffsetY = 0; // Offset between lines (on line break '\n') float textOffsetX = 0.0f; // Offset X to next character to draw float scaleFactor = fontSize/font.baseSize; // Character quad scaling factor for (int i = 0; i < length; i++) { // Get next codepoint from byte string and glyph index in font int codepointByteCount = 0; int codepoint = GetNextCodepoint(&text[i], &codepointByteCount); int index = GetGlyphIndex(font, codepoint); // NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) // but we need to draw all of the bad bytes using the '?' symbol moving one byte if (codepoint == 0x3f) codepointByteCount = 1; if (codepoint == '\n') { // NOTE: Fixed line spacing of 1.5 line-height // TODO: Support custom line spacing defined by user textOffsetY += (int)((font.baseSize + font.baseSize/2)*scaleFactor); textOffsetX = 0.0f; } else { if ((codepoint != ' ') && (codepoint != '\t')) { Rectangle rec = { position.x + textOffsetX + font.chars[index].offsetX*scaleFactor, position.y + textOffsetY + font.chars[index].offsetY*scaleFactor, font.recs[index].width*scaleFactor, font.recs[index].height*scaleFactor }; DrawTexturePro(font.texture, font.recs[index], rec, (Vector2){ 0, 0 }, 0.0f, tint); } if (font.chars[index].advanceX == 0) textOffsetX += ((float)font.recs[index].width*scaleFactor + spacing); else textOffsetX += ((float)font.chars[index].advanceX*scaleFactor + spacing); } i += (codepointByteCount - 1); // Move text bytes counter to next codepoint } } // Draw text using font inside rectangle limits void DrawTextRec(Font font, const char *text, Rectangle rec, float fontSize, float spacing, bool wordWrap, Color tint) { DrawTextRecEx(font, text, rec, fontSize, spacing, wordWrap, tint, 0, 0, WHITE, WHITE); } // Draw text using font inside rectangle limits with support for text selection void DrawTextRecEx(Font font, const char *text, Rectangle rec, float fontSize, float spacing, bool wordWrap, Color tint, int selectStart, int selectLength, Color selectTint, Color selectBackTint) { int length = strlen(text); // Total length in bytes of the text, scanned by codepoints in loop int textOffsetY = 0; // Offset between lines (on line break '\n') float textOffsetX = 0.0f; // Offset X to next character to draw float scaleFactor = fontSize/font.baseSize; // Character quad scaling factor // Word/character wrapping mechanism variables enum { MEASURE_STATE = 0, DRAW_STATE = 1 }; int state = wordWrap? MEASURE_STATE : DRAW_STATE; int startLine = -1; // Index where to begin drawing (where a line begins) int endLine = -1; // Index where to stop drawing (where a line ends) int lastk = -1; // Holds last value of the character position for (int i = 0, k = 0; i < length; i++, k++) { // Get next codepoint from byte string and glyph index in font int codepointByteCount = 0; int codepoint = GetNextCodepoint(&text[i], &codepointByteCount); int index = GetGlyphIndex(font, codepoint); // NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) // but we need to draw all of the bad bytes using the '?' symbol moving one byte if (codepoint == 0x3f) codepointByteCount = 1; i += (codepointByteCount - 1); int glyphWidth = 0; if (codepoint != '\n') { glyphWidth = (font.chars[index].advanceX == 0)? (int)(font.recs[index].width*scaleFactor + spacing): (int)(font.chars[index].advanceX*scaleFactor + spacing); } // NOTE: When wordWrap is ON we first measure how much of the text we can draw before going outside of the rec container // We store this info in startLine and endLine, then we change states, draw the text between those two variables // and change states again and again recursively until the end of the text (or until we get outside of the container). // When wordWrap is OFF we don't need the measure state so we go to the drawing state immediately // and begin drawing on the next line before we can get outside the container. if (state == MEASURE_STATE) { // TODO: There are multiple types of spaces in UNICODE, maybe it's a good idea to add support for more // Ref: http://jkorpela.fi/chars/spaces.html if ((codepoint == ' ') || (codepoint == '\t') || (codepoint == '\n')) endLine = i; if ((textOffsetX + glyphWidth + 1) >= rec.width) { endLine = (endLine < 1)? i : endLine; if (i == endLine) endLine -= codepointByteCount; if ((startLine + codepointByteCount) == endLine) endLine = (i - codepointByteCount); state = !state; } else if ((i + 1) == length) { endLine = i; state = !state; } else if (codepoint == '\n') state = !state; if (state == DRAW_STATE) { textOffsetX = 0; i = startLine; glyphWidth = 0; // Save character position when we switch states int tmp = lastk; lastk = k - 1; k = tmp; } } else { if (codepoint == '\n') { if (!wordWrap) { textOffsetY += (int)((font.baseSize + font.baseSize/2)*scaleFactor); textOffsetX = 0; } } else { if (!wordWrap && ((textOffsetX + glyphWidth + 1) >= rec.width)) { textOffsetY += (int)((font.baseSize + font.baseSize/2)*scaleFactor); textOffsetX = 0; } // When text overflows rectangle height limit, just stop drawing if ((textOffsetY + (int)(font.baseSize*scaleFactor)) > rec.height) break; // Draw selection background bool isGlyphSelected = false; if ((selectStart >= 0) && (k >= selectStart) && (k < (selectStart + selectLength))) { DrawRectangleRec((Rectangle){ rec.x + textOffsetX - 1, rec.y + textOffsetY, glyphWidth, font.baseSize*scaleFactor }, selectBackTint); isGlyphSelected = true; } // Draw current chracter glyph if ((codepoint != ' ') && (codepoint != '\t')) { DrawTexturePro(font.texture, font.recs[index], (Rectangle){ rec.x + textOffsetX + font.chars[index].offsetX*scaleFactor, rec.y + textOffsetY + font.chars[index].offsetY*scaleFactor, font.recs[index].width*scaleFactor, font.recs[index].height*scaleFactor }, (Vector2){ 0, 0 }, 0.0f, (!isGlyphSelected)? tint : selectTint); } } if (wordWrap && (i == endLine)) { textOffsetY += (int)((font.baseSize + font.baseSize/2)*scaleFactor); textOffsetX = 0; startLine = endLine; endLine = -1; glyphWidth = 0; k = lastk; state = !state; } } textOffsetX += glyphWidth; } } // 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; int letter = 0; // Current character int index = 0; // Index position in sprite font for (int i = 0; i < len; i++) { lenCounter++; int next = 0; letter = GetNextCodepoint(&text[i], &next); index = GetGlyphIndex(font, letter); // NOTE: normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) // but we need to draw all of the bad bytes using the '?' symbol so to not skip any we set next = 1 if (letter == 0x3f) next = 1; i += next - 1; if (letter != '\n') { if (font.chars[index].advanceX != 0) textWidth += font.chars[index].advanceX; else textWidth += (font.recs[index].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 = { 0 }; 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 codepoint) { #define TEXT_CHARACTER_NOTFOUND 63 // Character: '?' #define UNORDERED_CHARSET #if defined(UNORDERED_CHARSET) int index = TEXT_CHARACTER_NOTFOUND; for (int i = 0; i < font.charsCount; i++) { if (font.chars[i].value == codepoint) { index = i; break; } } return index; #else return (codepoint - 32); #endif } // Text strings management functions //---------------------------------------------------------------------------------- // Check if two text string are equal // REQUIRES: strcmp() bool TextIsEqual(const char *text1, const char *text2) { bool result = false; if (strcmp(text1, text2) == 0) result = true; return result; } // Get text length in bytes, check for \0 character unsigned int TextLength(const char *text) { unsigned int length = 0; while (*text++) length++; return length; } // Formatting of text with variables to 'embed' // WARNING: String returned will expire after this function is called MAX_TEXTFORMAT_BUFFERS times const char *TextFormat(const char *text, ...) { #define MAX_TEXTFORMAT_BUFFERS 4 // We create an array of buffers so strings don't expire until MAX_TEXTFORMAT_BUFFERS invocations static char buffers[MAX_TEXTFORMAT_BUFFERS][MAX_TEXT_BUFFER_LENGTH] = { 0 }; static int index = 0; char *currentBuffer = buffers[index]; va_list args; va_start(args, text); vsprintf(currentBuffer, text, args); va_end(args); index += 1; // Move to next buffer for next function call if (index >= MAX_TEXTFORMAT_BUFFERS) index = 0; return currentBuffer; } // Get a piece of a text string // REQUIRES: strlen() const char *TextSubtext(const char *text, int position, int length) { static char buffer[MAX_TEXT_BUFFER_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; } // Replace text string // REQUIRES: strlen(), strstr(), strncpy(), strcpy() // WARNING: Internally allocated memory must be freed by the user (if return != NULL) char *TextReplace(char *text, const char *replace, const char *by) { char *result; char *insertPoint; // Next insert point char *temp; // Temp pointer int replaceLen; // Replace string length of (the string to remove) int byLen; // Replacement length (the string to replace replace by) int lastReplacePos; // Distance between replace and end of last replace int count; // Number of replacements // Sanity checks and initialization if (!text || !replace) return NULL; replaceLen = strlen(replace); if (replaceLen == 0) return NULL; // Empty replace causes infinite loop during count if (!by) by = ""; // Replace by nothing if not provided byLen = strlen(by); // Count the number of replacements needed insertPoint = text; for (count = 0; (temp = strstr(insertPoint, replace)); count++) insertPoint = temp + replaceLen; // Allocate returning string and point temp to it temp = result = RL_MALLOC(strlen(text) + (byLen - replaceLen)*count + 1); if (!result) return NULL; // Memory could not be allocated // First time through the loop, all the variable are set correctly from here on, // temp points to the end of the result string // insertPoint points to the next occurrence of replace in text // text points to the remainder of text after "end of replace" while (count--) { insertPoint = strstr(text, replace); lastReplacePos = insertPoint - text; temp = strncpy(temp, text, lastReplacePos) + lastReplacePos; temp = strcpy(temp, by) + byLen; text += lastReplacePos + replaceLen; // Move to next "end of replace" } // Copy remaind text part after replacement to result (pointed by moving temp) strcpy(temp, text); return result; } // Insert text in a specific position, moves all text forward // REQUIRES: strlen(), strcpy(), strtok() // WARNING: Allocated memory should be manually freed char *TextInsert(const char *text, const char *insert, int position) { int textLen = strlen(text); int insertLen = strlen(insert); char *result = (char *)RL_MALLOC(textLen + insertLen + 1); for (int i = 0; i < position; i++) result[i] = text[i]; for (int i = position; i < insertLen + position; i++) result[i] = insert[i]; for (int i = (insertLen + position); i < (textLen + insertLen); i++) result[i] = text[i]; result[textLen + insertLen] = '\0'; // Make sure text string is valid! return result; } // Join text strings with delimiter // REQUIRES: strcat() const char *TextJoin(const char **textList, int count, const char *delimiter) { static char text[MAX_TEXT_BUFFER_LENGTH] = { 0 }; memset(text, 0, MAX_TEXT_BUFFER_LENGTH); int totalLength = 0; int delimiterLen = strlen(delimiter); for (int i = 0; i < count; i++) { int textListLength = strlen(textList[i]); // Make sure joined text could fit inside MAX_TEXT_BUFFER_LENGTH if ((totalLength + textListLength) < MAX_TEXT_BUFFER_LENGTH) { strcat(text, textList[i]); totalLength += textListLength; if ((delimiterLen > 0) && (i < (count - 1))) { strcat(text, delimiter); totalLength += delimiterLen; } } } return text; } // Split string into multiple strings const char **TextSplit(const char *text, char delimiter, int *count) { // NOTE: Current implementation returns a copy of the provided string with '\0' (string end delimiter) // inserted between strings defined by "delimiter" parameter. No memory is dynamically allocated, // all used memory is static... it has some limitations: // 1. Maximum number of possible split strings is set by TEXTSPLIT_MAX_SUBSTRINGS_COUNT // 2. Maximum size of text to split is TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH static const char *result[TEXTSPLIT_MAX_SUBSTRINGS_COUNT] = { NULL }; static char buffer[TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH] = { 0 }; memset(buffer, 0, TEXTSPLIT_MAX_TEXT_BUFFER_LENGTH); result[0] = buffer; int counter = 0; if (text != NULL) { counter = 1; // Count how many substrings we have on text and point to every one for (int i = 0; i < MAX_TEXT_BUFFER_LENGTH; i++) { buffer[i] = text[i]; if (buffer[i] == '\0') break; else if (buffer[i] == delimiter) { buffer[i] = '\0'; // Set an end of string at this point result[counter] = buffer + i + 1; counter++; if (counter == TEXTSPLIT_MAX_SUBSTRINGS_COUNT) break; } } } *count = counter; return result; } // Append text at specific position and move cursor! // REQUIRES: strcpy() void TextAppend(char *text, const char *append, int *position) { strcpy(text + *position, append); *position += strlen(append); } // Find first text occurrence within a string // REQUIRES: strstr() int TextFindIndex(const char *text, const char *find) { int position = -1; char *ptr = strstr(text, find); if (ptr != NULL) position = ptr - text; return position; } // Get upper case version of provided string // REQUIRES: toupper() const char *TextToUpper(const char *text) { static char buffer[MAX_TEXT_BUFFER_LENGTH] = { 0 }; for (int i = 0; i < MAX_TEXT_BUFFER_LENGTH; i++) { if (text[i] != '\0') buffer[i] = (char)toupper(text[i]); else { buffer[i] = '\0'; break; } } return buffer; } // Get lower case version of provided string // REQUIRES: tolower() const char *TextToLower(const char *text) { static char buffer[MAX_TEXT_BUFFER_LENGTH] = { 0 }; for (int i = 0; i < MAX_TEXT_BUFFER_LENGTH; i++) { if (text[i] != '\0') buffer[i] = (char)tolower(text[i]); else { buffer[i] = '\0'; break; } } return buffer; } // Get Pascal case notation version of provided string // REQUIRES: toupper() const char *TextToPascal(const char *text) { static char buffer[MAX_TEXT_BUFFER_LENGTH] = { 0 }; buffer[0] = (char)toupper(text[0]); for (int i = 1, j = 1; i < MAX_TEXT_BUFFER_LENGTH; i++, j++) { if (text[j] != '\0') { if (text[j] != '_') buffer[i] = text[j]; else { j++; buffer[i] = (char)toupper(text[j]); } } else { buffer[i] = '\0'; break; } } return buffer; } // Get integer value from text // NOTE: Negative values not supported int TextToInteger(const char *text) { int result = 0; int len = strlen(text); int units = 1; for (int i = len - 1; i >= 0; i--) { if ((text[i] > 47) && (text[i] < 58)) result += ((int)text[i] - 48)*units; else { result = -1; break; } units *= 10; } return result; } // Encode text codepoint into utf8 text (memory must be freed!) char *TextToUtf8(int *codepoints, int length) { // We allocate enough memory fo fit all possible codepoints // NOTE: 5 bytes for every codepoint should be enough char *text = (char *)calloc(length*5, 1); const char *utf8 = NULL; int size = 0; for (int i = 0, bytes = 0; i < length; i++) { utf8 = CodepointToUtf8(codepoints[i], &bytes); strncpy(text + size, utf8, bytes); size += bytes; } // Resize memory to text length + string NULL terminator text = realloc(text, size + 1); return text; } // Get all codepoints in a string, codepoints count returned by parameters int *GetCodepoints(const char *text, int *count) { static int codepoints[MAX_TEXT_UNICODE_CHARS] = { 0 }; memset(codepoints, 0, MAX_TEXT_UNICODE_CHARS*sizeof(int)); int bytesProcessed = 0; int textLength = strlen(text); int codepointsCount = 0; for (int i = 0; i < textLength; codepointsCount++) { codepoints[codepointsCount] = GetNextCodepoint(text + i, &bytesProcessed); i += bytesProcessed; } *count = codepointsCount; return codepoints; } // Returns total number of characters(codepoints) in a UTF8 encoded text, until '\0' is found // NOTE: If an invalid UTF8 sequence is encountered a '?'(0x3f) codepoint is counted instead int GetCodepointsCount(const char *text) { unsigned int len = 0; char *ptr = (char *)&text[0]; while (*ptr != '\0') { int next = 0; int letter = GetNextCodepoint(ptr, &next); if (letter == 0x3f) ptr += 1; else ptr += next; len++; } return len; } // Returns next codepoint in a UTF8 encoded text, scanning until '\0' is found // When a invalid UTF8 byte is encountered we exit as soon as possible and a '?'(0x3f) codepoint is returned // Total number of bytes processed are returned as a parameter // NOTE: the standard says U+FFFD should be returned in case of errors // but that character is not supported by the default font in raylib // TODO: optimize this code for speed!! int GetNextCodepoint(const char *text, int *bytesProcessed) { /* UTF8 specs from https://www.ietf.org/rfc/rfc3629.txt Char. number range | UTF-8 octet sequence (hexadecimal) | (binary) --------------------+--------------------------------------------- 0000 0000-0000 007F | 0xxxxxxx 0000 0080-0000 07FF | 110xxxxx 10xxxxxx 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ // NOTE: on decode errors we return as soon as possible int code = 0x3f; // Codepoint (defaults to '?') int octet = (unsigned char)(text[0]); // The first UTF8 octet *bytesProcessed = 1; if (octet <= 0x7f) { // Only one octet (ASCII range x00-7F) code = text[0]; } else if ((octet & 0xe0) == 0xc0) { // Two octets // [0]xC2-DF [1]UTF8-tail(x80-BF) unsigned char octet1 = text[1]; if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence if ((octet >= 0xc2) && (octet <= 0xdf)) { code = ((octet & 0x1f) << 6) | (octet1 & 0x3f); *bytesProcessed = 2; } } else if ((octet & 0xf0) == 0xe0) { // Three octets unsigned char octet1 = text[1]; unsigned char octet2 = '\0'; if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence octet2 = text[2]; if ((octet2 == '\0') || ((octet2 >> 6) != 2)) { *bytesProcessed = 3; return code; } // Unexpected sequence /* [0]xE0 [1]xA0-BF [2]UTF8-tail(x80-BF) [0]xE1-EC [1]UTF8-tail [2]UTF8-tail(x80-BF) [0]xED [1]x80-9F [2]UTF8-tail(x80-BF) [0]xEE-EF [1]UTF8-tail [2]UTF8-tail(x80-BF) */ if (((octet == 0xe0) && !((octet1 >= 0xa0) && (octet1 <= 0xbf))) || ((octet == 0xed) && !((octet1 >= 0x80) && (octet1 <= 0x9f)))) { *bytesProcessed = 2; return code; } if ((octet >= 0xe0) && (0 <= 0xef)) { code = ((octet & 0xf) << 12) | ((octet1 & 0x3f) << 6) | (octet2 & 0x3f); *bytesProcessed = 3; } } else if ((octet & 0xf8) == 0xf0) { // Four octets if (octet > 0xf4) return code; unsigned char octet1 = text[1]; unsigned char octet2 = '\0'; unsigned char octet3 = '\0'; if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence octet2 = text[2]; if ((octet2 == '\0') || ((octet2 >> 6) != 2)) { *bytesProcessed = 3; return code; } // Unexpected sequence octet3 = text[3]; if ((octet3 == '\0') || ((octet3 >> 6) != 2)) { *bytesProcessed = 4; return code; } // Unexpected sequence /* [0]xF0 [1]x90-BF [2]UTF8-tail [3]UTF8-tail [0]xF1-F3 [1]UTF8-tail [2]UTF8-tail [3]UTF8-tail [0]xF4 [1]x80-8F [2]UTF8-tail [3]UTF8-tail */ if (((octet == 0xf0) && !((octet1 >= 0x90) && (octet1 <= 0xbf))) || ((octet == 0xf4) && !((octet1 >= 0x80) && (octet1 <= 0x8f)))) { *bytesProcessed = 2; return code; } // Unexpected sequence if (octet >= 0xf0) { code = ((octet & 0x7) << 18) | ((octet1 & 0x3f) << 12) | ((octet2 & 0x3f) << 6) | (octet3 & 0x3f); *bytesProcessed = 4; } } if (code > 0x10ffff) code = 0x3f; // Codepoints after U+10ffff are invalid return code; } // Encode codepoint into utf8 text (char array length returned as parameter) RLAPI const char *CodepointToUtf8(int codepoint, int *byteLength) { static char utf8[6] = { 0 }; int length = 0; if (codepoint <= 0x7f) { utf8[0] = (char)codepoint; length = 1; } else if (codepoint <= 0x7ff) { utf8[0] = (char)(((codepoint >> 6) & 0x1f) | 0xc0); utf8[1] = (char)((codepoint & 0x3f) | 0x80); length = 2; } else if (codepoint <= 0xffff) { utf8[0] = (char)(((codepoint >> 12) & 0x0f) | 0xe0); utf8[1] = (char)(((codepoint >> 6) & 0x3f) | 0x80); utf8[2] = (char)((codepoint & 0x3f) | 0x80); length = 3; } else if (codepoint <= 0x10ffff) { utf8[0] = (char)(((codepoint >> 18) & 0x07) | 0xf0); utf8[1] = (char)(((codepoint >> 12) & 0x3f) | 0x80); utf8[2] = (char)(((codepoint >> 6) & 0x3f) | 0x80); utf8[3] = (char)((codepoint & 0x3f) | 0x80); length = 4; } *byteLength = length; return utf8; } //---------------------------------------------------------------------------------- //---------------------------------------------------------------------------------- // 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, '/'); if (lastSlash == NULL) { lastSlash = strrchr(fileName, '\\'); } // NOTE: We need some extra space to avoid memory corruption on next allocations! texPath = RL_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) { // Convert image to GRAYSCALE + ALPHA, using the mask as the alpha channel ImageAlphaMask(&imFont, imFont); for (int p = 0; p < (imFont.width*imFont.height*2); p += 2) ((unsigned char *)(imFont.data))[p] = 0xff; } font.texture = LoadTextureFromImage(imFont); RL_FREE(texPath); // Fill font characters info data font.baseSize = fontSize; font.charsCount = charsCount; font.chars = (CharInfo *)RL_MALLOC(charsCount*sizeof(CharInfo)); font.recs = (Rectangle *)RL_MALLOC(charsCount*sizeof(Rectangle)); 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); // Get character rectangle in the font atlas texture font.recs[i] = (Rectangle){ (float)charX, (float)charY, (float)charWidth, (float)charHeight }; // Save data properly in sprite font font.chars[i].value = charId; font.chars[i].offsetX = charOffsetX; font.chars[i].offsetY = charOffsetY; font.chars[i].advanceX = charAdvanceX; // Fill character image data from imFont data font.chars[i].image = ImageFromImage(imFont, font.recs[i]); } UnloadImage(imFont); fclose(fntFile); if (font.texture.id == 0) { UnloadFont(font); font = GetFontDefault(); } else TraceLog(LOG_INFO, "[%s] Font loaded successfully", fileName); return font; } #endif