1 files changed, 82 insertions, 0 deletions
diff --git a/src/resource_loader.c b/src/resource_loader.c
new file mode 100644
index 0000000..d589373
--- /dev/null
+++ b/src/resource_loader.c
@@ -0,0 +1,82 @@
+#include "../include/resource_loader.h"
+#include "../include/alloc.h"
+#include <mgl/system/fileutils.h>
+#include <mgl/graphics/font.h>
+#include <stdio.h>
+
+/* Note: max font size: 100 */
+static mgl_memory_mapped_file *font_file_cache[4];
+static mgl_font *font_cache[4][100];
+
+/* TODO: If font fails to load, then create a new font with only a squares that represents all glyphs */
+/* TODO: Load default system font from fontconfig files */
+mgl_font* mgui_get_font(mgui_font_type type, unsigned int character_size) {
+    if(character_size > 0)
+        --character_size;
+
+    /* TODO: Make this work for character size >= 100 */
+    if(character_size >= 100)
+        character_size = 99;
+
+    mgl_memory_mapped_file *font_file = font_file_cache[type];
+    if(!font_file) {
+        const char *font_paths[2];
+        size_t num_font_paths = 0;
+
+        switch(type) {
+            case MGUI_FONT_LATIN: {
+                font_paths[0] = "/usr/share/fonts/noto/NotoSans-Regular.ttf";
+                font_paths[1] = "/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf";
+                num_font_paths = 2;
+                break;
+            }
+            case MGUI_FONT_LATIN_BOLD: {
+                font_paths[0] = "/usr/share/fonts/noto/NotoSans-Bold.ttf";
+                font_paths[1] = "/usr/share/fonts/truetype/noto/NotoSans-Bold.ttf";
+                num_font_paths = 2;
+                break;
+            }
+            case MGUI_FONT_CJK: {
+                font_paths[0] = "/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttf";
+                font_paths[1] = "/usr/share/fonts/truetype/noto-cjk/NotoSansCJK-Regular.ttf";
+                num_font_paths = 2;
+                break;
+            }
+        }
+
+        mgl_memory_mapped_file *new_font_file = mgui_alloc(sizeof(mgl_memory_mapped_file));
+
+        mgl_memory_mapped_file_load_options load_options = {
+            .readable = true,
+            .writable = false
+        };
+
+        bool successfully_loaded_file = false;
+        for(size_t i = 0; i < num_font_paths; ++i) {
+            if(mgl_mapped_file_load(font_paths[i], new_font_file, &load_options) == 0) {
+                successfully_loaded_file = true;
+                break;
+            }
+        }
+
+        if(!successfully_loaded_file)
+            fprintf(stderr, "mgui warning: mgui_get_font failed to load font %d\n", (int)type);
+
+        font_file_cache[type] = new_font_file;
+        font_file = new_font_file;
+    }
+
+    if(!font_file)
+        return NULL;
+
+    mgl_font *font = font_cache[type][character_size];
+    if(!font) {
+        mgl_font *new_font = mgui_alloc(sizeof(mgl_font));
+        if(mgl_font_load_from_file(new_font, font_file, character_size) != 0)
+            fprintf(stderr, "mgui warning: mgui_get_font failed to load font %d\n", (int)type);
+
+        font_cache[type][character_size] = new_font;
+        font = new_font;
+    }
+    return font;
+}