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REDESIGNED: example: `text_unicode_ranges`

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Ray 1 month ago
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1 changed files with 116 additions and 102 deletions
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  1. +116
    -102
      examples/text/text_unicode_ranges.c

+ 116
- 102
examples/text/text_unicode_ranges.c View File

@ -11,7 +11,7 @@
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2019-2025 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
* Copyright (c) 2025 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
@ -19,20 +19,11 @@
#include <stdlib.h>
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
typedef struct {
int *data;
int count;
int capacity;
} CodepointsArray;
//--------------------------------------------------------------------------------------
// Module Functions Declaration
//--------------------------------------------------------------------------------------
k">static void AddCodepointRange(CodepointsArray* array, int start, int stop);
o">//static Font LoadUnicodeFont(const char* fileName, int fontSize);
// Add codepoint range to existing font
static void AddCodepointRange(Font *font, const char *fontPath, int start, int stop);
//------------------------------------------------------------------------------------
// Program main entry point
@ -46,9 +37,12 @@ int main(void)
InitWindow(screenWidth, screenHeight, "raylib [text] example - unicode ranges");
// Load font with Unicode support
Font fontUni = LoadUnicodeFont("resources/NotoSansTC-Regular.ttf", 32);
SetTextureFilter(fontUni.texture, TEXTURE_FILTER_BILINEAR);
// Load font with default Unicode range: Basic ASCII [32-127]
Font font = LoadFont("resources/NotoSansTC-Regular.ttf");
SetTextureFilter(font.texture, TEXTURE_FILTER_BILINEAR);
int unicodeRange = 0; // Track the ranges of codepoints added to font
int prevUnicodeRange = 0; // Previous Unicode range to avoid reloading every frame
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -58,7 +52,76 @@ int main(void)
{
// Update
//----------------------------------------------------------------------------------
//...
if (unicodeRange != prevUnicodeRange)
{
UnloadFont(font);
// Load font with default Unicode range: Basic ASCII [32-127]
font = LoadFont("resources/NotoSansTC-Regular.ttf");
// Add required ranges to loaded font
switch (unicodeRange)
{
/*
case 5:
{
// Unicode range: Devanari, Arabic, Hebrew
// WARNING: Glyphs not available on provided font!
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x900, 0x97f); // Devanagari
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x600, 0x6ff); // Arabic
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x5d0, 0x5ea); // Hebrew
}
*/
case 4:
{
// Unicode range: CJK (Japanese and Chinese)
// WARNING: Loading thousands of codepoints requires lot of time!
// A better strategy is prefilter the required codepoints for the text
// in the game and just load the required ones
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x4e00, 0x9fff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3400, 0x4dbf);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3000, 0x303f);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x3040, 0x309f);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x30A0, 0x30ff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x31f0, 0x31ff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xff00, 0xffef);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xac00, 0xd7af);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1100, 0x11ff);
}
case 3:
{
// Unicode range: Cyrillic
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x400, 0x4ff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x500, 0x52f);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x2de0, 0x2Dff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xa640, 0xA69f);
}
case 2:
{
// Unicode range: Greek
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x370, 0x3ff);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1f00, 0x1fff);
}
case 1:
{
// Unicode range: European Languages
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0xc0, 0x17f);
AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x180, 0x24f);
//AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x1e00, 0x1eff);
//AddCodepointRange(&font, "resources/NotoSansTC-Regular.ttf", 0x2c60, 0x2c7f);
}
default: break;
}
prevUnicodeRange = unicodeRange;
}
if (IsKeyPressed(KEY_ZERO)) unicodeRange = 0;
else if (IsKeyPressed(KEY_ONE)) unicodeRange = 1;
else if (IsKeyPressed(KEY_TWO)) unicodeRange = 2;
else if (IsKeyPressed(KEY_THREE)) unicodeRange = 3;
else if (IsKeyPressed(KEY_FOUR)) unicodeRange = 4;
//else if (IsKeyPressed(KEY_FIVE)) unicodeRange = 5;
//----------------------------------------------------------------------------------
// Draw
@ -66,22 +129,34 @@ int main(void)
BeginDrawing();
ClearBackground(RAYWHITE);
DrawText("ADD CODEPOINTS: 1,2,3,4", 20, 20, 20, MAROON);
// Render test strings in different languages
DrawTextEx(fontUni, "English: Hello World!", (Vector2){ 50, 50 }, 32, 1, DARKGRAY); // English
DrawTextEx(fontUni, "Español: Hola mundo!", (Vector2){ 50, 100 }, 32, 1, DARKGRAY); // Spanish
DrawTextEx(fontUni, "Ελληνικά: Γειά σου κόσμε!", (Vector2){ 50, 150 }, 32, 1, DARKGRAY); // Greek
DrawTextEx(fontUni, "Русский: Привет мир!", (Vector2){ 50, 200 }, 32, 0, DARKGRAY); // Russian
DrawTextEx(fontUni, "中文: 你好世界!", (Vector2){ 50, 250 }, 32, 1, DARKGRAY); // Chinese
DrawTextEx(fontUni, "日本語: こんにちは世界!", (Vector2){ 50, 300 }, 32, 1, DARKGRAY); // Japanese
DrawTextEx(fontUni, "देवनागरी: होला मुंडो!", (Vector2){ 50, 350 }, 32, 1, DARKGRAY); // Devanagari
DrawTextEx(font, "> English: Hello World!", (Vector2){ 50, 70 }, 32, 1, DARKGRAY); // English
DrawTextEx(font, "> Español: Hola mundo!", (Vector2){ 50, 120 }, 32, 1, DARKGRAY); // Spanish
DrawTextEx(font, "> Ελληνικά: Γειά σου κόσμε!", (Vector2){ 50, 170 }, 32, 1, DARKGRAY); // Greek
DrawTextEx(font, "> Русский: Привет мир!", (Vector2){ 50, 220 }, 32, 0, DARKGRAY); // Russian
DrawTextEx(font, "> 中文: 你好世界!", (Vector2){ 50, 270 }, 32, 1, DARKGRAY); // Chinese
DrawTextEx(font, "> 日本語: こんにちは世界!", (Vector2){ 50, 320 }, 32, 1, DARKGRAY); // Japanese
o">//DrawTextEx(font, "देवनागरी: होला मुंडो!", (Vector2){ 50, 350 }, 32, 1, DARKGRAY); // Devanagari (glyphs not available in font)
// Draw font texture scaled to screen
DrawRectangle(400, 16, 380, 400, BLACK);
DrawTexturePro(fontUni.texture, (Rectangle){ 0, 0, fontUni.texture.width, fontUni.texture.height },
(Rectangle){ 400, 16, 380, 400 }, (Vector2){ 0, 0 }, 0.0f, WHITE);
DrawTexturePro(font.texture, (Rectangle){ 0, 0, font.texture.width, font.texture.height },
(Rectangle){ 400, 16, font.texture.width*0.5f, font.texture.height*0.5f }, (Vector2){ 0, 0 }, 0.0f, WHITE);
DrawText(TextFormat("ATLAS SIZE: %ix%i px", font.texture.width, font.texture.height), 20, 380, 20, BLUE);
// Display font attribution
DrawText("Font: Noto Sans TC. License: SIL Open Font License 1.1", screenWidth - 300, screenHeight - 20, 10, GRAY);
if (prevUnicodeRange != unicodeRange)
{
DrawRectangle(0, 0, screenWidth, screenHeight, Fade(WHITE, 0.8f));
DrawRectangle(0, 125, screenWidth, 200, GRAY);
DrawText("LOADING CODEPOINTS...", 150, 210, 40, BLACK);
}
EndDrawing();
//----------------------------------------------------------------------------------
@ -89,7 +164,7 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadFont(fontUni); // Unload font resource
UnloadFont(font); // Unload font resource
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
@ -100,87 +175,26 @@ int main(void)
//--------------------------------------------------------------------------------------
// Module Functions Definition
//--------------------------------------------------------------------------------------
static void AddRange(CodepointsArray* array, int start, int stop)
// Add codepoint range to existing font
static void AddCodepointRange(Font *font, const char *fontPath, int start, int stop)
{
int rangeSize = stop - start + 1;
int currentRangeSize = font->glyphCount;
if ((array->count + rangeSize) > array->capacity)
{
array->capacity = array->count + rangeSize + 1024;
array->data = (int *)MemRealloc(array->data, array->capacity*sizeof(int));
if (!array->data)
{
TraceLog(LOG_ERROR, "FONTUTIL: Memory allocation failed");
exit(1);
}
}
// TODO: Load glyphs from provided vector font (if available),
// add them to existing font, regenerating font image and texture
">for (int i = start; i <= stop; i++) array->data[array->count++] = i;
}
int updatedCodepointCount = currentRangeSize + rangeSize;
int *updatedCodepoints = (int *)RL_CALLOC(updatedCodepointCount, sizeof(int));
Font LoadUnicodeFont(const char *fileName, int fontSize)
{
CodepointsArray cp = { 0 };
cp.capacity = 2048;
cp.data = (int *)MemAlloc(cp.capacity*sizeof(int));
// Get current codepoint list
for (int i = 0; i < currentRangeSize; i++) updatedCodepoints[i] = font->glyphs[i].value;
if (!cp.data)
{
TraceLog(LOG_ERROR, "FONTUTIL: Initial allocation failed");
return GetFontDefault();
}
// Unicode range: Basic ASCII
AddRange(&cp, 32, 126);
// Unicode range: European Languages
AddRange(&cp, 0xC0, 0x17F);
AddRange(&cp, 0x180, 0x24F);
AddRange(&cp, 0x1E00, 0x1EFF);
AddRange(&cp, 0x2C60, 0x2C7F);
// Unicode range: Greek
AddRange(&cp, 0x370, 0x3FF);
AddRange(&cp, 0x1F00, 0x1FFF);
// Unicode range: Cyrillic
AddRange(&cp, 0x400, 0x4FF);
AddRange(&cp, 0x500, 0x52F);
AddRange(&cp, 0x2DE0, 0x2DFF);
AddRange(&cp, 0xA640, 0xA69F);
// Unicode range: CJK
AddRange(&cp, 0x4E00, 0x9FFF);
AddRange(&cp, 0x3400, 0x4DBF);
AddRange(&cp, 0x3000, 0x303F);
AddRange(&cp, 0x3040, 0x309F);
AddRange(&cp, 0x30A0, 0x30FF);
AddRange(&cp, 0x31F0, 0x31FF);
AddRange(&cp, 0xFF00, 0xFFEF);
AddRange(&cp, 0xAC00, 0xD7AF);
AddRange(&cp, 0x1100, 0x11FF);
// Unicode range: Other
// WARNING: Not available on provided font
AddRange(&cp, 0x900, 0x97F); // Devanagari
AddRange(&cp, 0x600, 0x6FF); // Arabic
AddRange(&cp, 0x5D0, 0x5EA); // Hebrew
Font font = {0};
if (FileExists(fileName))
{
font = LoadFontEx(fileName, fontSize, cp.data, cp.count);
}
if (font.texture.id == 0)
{
font = GetFontDefault();
TraceLog(LOG_WARNING, "FONTUTIL: Using default font");
}
// Add new codepoints to list (provided range)
for (int i = currentRangeSize; i < updatedCodepointCount; i++)
updatedCodepoints[i] = start + (i - currentRangeSize);
MemFree(cp.data);
return font;
UnloadFont(*font);
*font = LoadFontEx(fontPath, 32, updatedCodepoints, updatedCodepointCount);
}

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