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205 lines
10 KiB
205 lines
10 KiB
/*******************************************************************************************
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*
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* raylib [text] example - unicode ranges
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*
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* Example complexity rating: [★★★★] 4/4
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*
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* Example originally created with raylib 5.5, last time updated with raylib 5.6
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*
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* Example contributed by Vlad Adrian (@demizdor) and reviewed by Ramon Santamaria (@raysan5)
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2025 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#include <stdlib.h> // Required for: calloc(), free()
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//--------------------------------------------------------------------------------------
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// Module Functions Declaration
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//--------------------------------------------------------------------------------------
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// Add codepoint range to existing font
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static void AddCodepointRange(Font *font, const char *fontPath, int start, int stop);
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//------------------------------------------------------------------------------------
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// Program main entry point
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//------------------------------------------------------------------------------------
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [text] example - unicode ranges");
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// Load font with default Unicode range: Basic ASCII [32-127]
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Font font = LoadFont("resources/NotoSansTC-Regular.ttf");
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SetTextureFilter(font.texture, TEXTURE_FILTER_BILINEAR);
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int unicodeRange = 0; // Track the ranges of codepoints added to font
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int prevUnicodeRange = 0; // Previous Unicode range to avoid reloading every frame
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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// Main loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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if (unicodeRange != prevUnicodeRange)
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{
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UnloadFont(font);
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// Load font with default Unicode range: Basic ASCII [32-127]
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font = LoadFont("resources/NotoSansTC-Regular.ttf");
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// Add required ranges to loaded font
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switch (unicodeRange)
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{
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/*
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case 5:
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{
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// Unicode range: Devanari, Arabic, Hebrew
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// WARNING: Glyphs not available on provided font!
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x900, 0x97f); // Devanagari
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x600, 0x6ff); // Arabic
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x5d0, 0x5ea); // Hebrew
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}
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*/
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case 4:
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{
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// Unicode range: CJK (Japanese and Chinese)
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// WARNING: Loading thousands of codepoints requires lot of time!
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// A better strategy is prefilter the required codepoints for the text
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// in the game and just load the required ones
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x4e00, 0x9fff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3400, 0x4dbf);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3000, 0x303f);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3040, 0x309f);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x30A0, 0x30ff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x31f0, 0x31ff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xff00, 0xffef);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xac00, 0xd7af);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1100, 0x11ff);
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}
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case 3:
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{
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// Unicode range: Cyrillic
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x400, 0x4ff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x500, 0x52f);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x2de0, 0x2Dff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xa640, 0xA69f);
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}
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case 2:
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{
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// Unicode range: Greek
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x370, 0x3ff);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1f00, 0x1fff);
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}
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case 1:
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{
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// Unicode range: European Languages
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xc0, 0x17f);
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AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x180, 0x24f);
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//AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1e00, 0x1eff);
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//AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x2c60, 0x2c7f);
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}
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default: break;
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}
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prevUnicodeRange = unicodeRange;
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SetTextureFilter(font.texture, TEXTURE_FILTER_BILINEAR); // Set font atlas scale filter
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}
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if (IsKeyPressed(KEY_ZERO)) unicodeRange = 0;
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else if (IsKeyPressed(KEY_ONE)) unicodeRange = 1;
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else if (IsKeyPressed(KEY_TWO)) unicodeRange = 2;
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else if (IsKeyPressed(KEY_THREE)) unicodeRange = 3;
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else if (IsKeyPressed(KEY_FOUR)) unicodeRange = 4;
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//else if (IsKeyPressed(KEY_FIVE)) unicodeRange = 5;
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawText("ADD CODEPOINTS: [1][2][3][4]", 20, 20, 20, MAROON);
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// Render test strings in different languages
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DrawTextEx(font, "> English: Hello World!", (Vector2){ 50, 70 }, 32, 1, DARKGRAY); // English
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DrawTextEx(font, "> Español: Hola mundo!", (Vector2){ 50, 120 }, 32, 1, DARKGRAY); // Spanish
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DrawTextEx(font, "> Ελληνικά: Γειά σου κόσμε!", (Vector2){ 50, 170 }, 32, 1, DARKGRAY); // Greek
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DrawTextEx(font, "> Русский: Привет мир!", (Vector2){ 50, 220 }, 32, 0, DARKGRAY); // Russian
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DrawTextEx(font, "> 中文: 你好世界!", (Vector2){ 50, 270 }, 32, 1, DARKGRAY); // Chinese
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DrawTextEx(font, "> 日本語: こんにちは世界!", (Vector2){ 50, 320 }, 32, 1, DARKGRAY); // Japanese
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//DrawTextEx(font, "देवनागरी: होला मुंडो!", (Vector2){ 50, 350 }, 32, 1, DARKGRAY); // Devanagari (glyphs not available in font)
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// Draw font texture scaled to screen
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float atlasScale = 380.0f/font.texture.width;
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DrawRectangle(400, 16, font.texture.width*atlasScale, font.texture.height*atlasScale, BLACK);
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DrawTexturePro(font.texture, (Rectangle){ 0, 0, font.texture.width, font.texture.height },
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(Rectangle){ 400, 16, font.texture.width*atlasScale, font.texture.height*atlasScale }, (Vector2){ 0, 0 }, 0.0f, WHITE);
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DrawRectangleLines(400, 16, 380, 380, RED);
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DrawText(TextFormat("ATLAS SIZE: %ix%i px (x%02.2f)", font.texture.width, font.texture.height, atlasScale), 20, 380, 20, BLUE);
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DrawText(TextFormat("CODEPOINTS GLYPHS LOADED: %i", font.glyphCount), 20, 410, 20, LIME);
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// Display font attribution
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DrawText("Font: Noto Sans TC. License: SIL Open Font License 1.1", screenWidth - 300, screenHeight - 20, 10, GRAY);
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if (prevUnicodeRange != unicodeRange)
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{
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DrawRectangle(0, 0, screenWidth, screenHeight, Fade(WHITE, 0.8f));
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DrawRectangle(0, 125, screenWidth, 200, GRAY);
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DrawText("GENERATING FONT ATLAS...", 120, 210, 40, BLACK);
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}
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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// De-Initialization
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//--------------------------------------------------------------------------------------
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UnloadFont(font); // Unload font resource
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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//--------------------------------------------------------------------------------------
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// Module Functions Definition
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//--------------------------------------------------------------------------------------
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// Add codepoint range to existing font
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static void AddCodepointRange(Font *font, const char *fontPath, int start, int stop)
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{
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int rangeSize = stop - start + 1;
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int currentRangeSize = font->glyphCount;
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// TODO: Load glyphs from provided vector font (if available),
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// add them to existing font, regenerating font image and texture
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int updatedCodepointCount = currentRangeSize + rangeSize;
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int *updatedCodepoints = (int *)RL_CALLOC(updatedCodepointCount, sizeof(int));
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// Get current codepoint list
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for (int i = 0; i < currentRangeSize; i++) updatedCodepoints[i] = font->glyphs[i].value;
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// Add new codepoints to list (provided range)
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for (int i = currentRangeSize; i < updatedCodepointCount; i++)
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updatedCodepoints[i] = start + (i - currentRangeSize);
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UnloadFont(*font);
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*font = LoadFontEx(fontPath, 32, updatedCodepoints, updatedCodepointCount);
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RL_FREE(updatedCodepoints);
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}
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