[example] Unicode codepoints loading

examples/text/text_unicode_font.c

@@ -0,0 +1,127 @@
+#include <stdlib.h>
+#include <raylib.h>
+
+#define SCREEN_WIDTH  800
+#define SCREEN_HEIGHT 450
+
+typedef struct {
+    int* data;
+    int count;
+    int capacity;
+} CodepointsArray;
+
+static void AddRange(CodepointsArray* array, int start, int stop) {
+    int rangeSize = stop - start + 1;
+
+    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);
+        }
+    }
+
+    for (int i = start; i <= stop; i++) {
+        array->data[array->count++] = i;
+    }
+}
+
+Font LoadUnicodeFont(const char* fileName, int fontSize, int textureFilter) {
+    CodepointsArray cp = {0};
+    cp.capacity = 2048;
+    cp.data = (int*)MemAlloc(cp.capacity * sizeof(int));
+
+    if (!cp.data) {
+        TraceLog(LOG_ERROR, "FONTUTIL: Initial allocation failed");
+        return GetFontDefault();
+    }
+
+    // Basic ASCII
+    AddRange(&cp, 32, 126);
+
+    // European Languages
+    AddRange(&cp, 0xC0, 0x17F);
+    AddRange(&cp, 0x180, 0x24F);
+    AddRange(&cp, 0x1E00, 0x1EFF);
+    AddRange(&cp, 0x2C60, 0x2C7F);
+
+    // Greek
+    AddRange(&cp, 0x370, 0x3FF);
+    AddRange(&cp, 0x1F00, 0x1FFF);
+
+    // Cyrillic
+    AddRange(&cp, 0x400, 0x4FF);
+    AddRange(&cp, 0x500, 0x52F);
+    AddRange(&cp, 0x2DE0, 0x2DFF);
+    AddRange(&cp, 0xA640, 0xA69F);
+
+    // 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);
+
+    // Other 
+    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");
+    }
+
+    SetTextureFilter(font.texture, textureFilter);
+    MemFree(cp.data);
+
+    return font;
+}
+
+/**
+ * Main entry point
+ */
+int main(void)
+{
+    // Initialize window
+    InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Unicode Font Example");
+    SetTargetFPS(60);
+
+    // Load font with Unicode support
+    Font myFont = LoadUnicodeFont("resources/NotoSansTC-Regular.ttf", 36, TEXTURE_FILTER_BILINEAR);
+
+    // Main render loop
+    while (!WindowShouldClose())
+    {
+        BeginDrawing();
+            ClearBackground(RAYWHITE);
+
+            // Render test strings in different languages
+            DrawTextEx(myFont, "English: Hello World!", (Vector2){50, 50}, 36, 1, DARKGRAY);
+            DrawTextEx(myFont, "Русский: Привет мир!", (Vector2){50, 100}, 36, 0, DARKGRAY);
+            DrawTextEx(myFont, "中文: 你好世界!", (Vector2){50, 150}, 36, 1, DARKGRAY);
+            DrawTextEx(myFont, "日本語: こんにちは世界!", (Vector2){50, 200}, 36, 1, DARKGRAY);
+
+            // Display font attribution
+            DrawText("Font: Noto Sans TC. License: SIL Open Font License 1.1", 
+                    10, SCREEN_HEIGHT - 20, 10, GRAY);
+        EndDrawing();
+    }
+
+    // Cleanup resources
+    UnloadFont(myFont);
+    CloseWindow();
+
+    return 0;
+}