.ttf fonts (beta)

src/kernel/font_manager.h

@@ -0,0 +1,53 @@
+#ifndef FONT_MANAGER_H
+#define FONT_MANAGER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+// stb_truetype math stubs
+extern float ksqrtf(float x);
+extern float kpowf(float b, float e);
+extern float kfmodf(float x, float y);
+extern float kcosf(float x);
+extern float kacosf(float x);
+extern float kfabsf(float x);
+
+#define STBTT_ifloor(x) ((int)(x))
+#define STBTT_iceil(x)  ((int)(x + 0.999999f))
+#define STBTT_sqrt(x)   ksqrtf(x)
+#define STBTT_pow(x,y)  kpowf(x,y)
+#define STBTT_fmod(x,y) kfmodf(x,y)
+#define STBTT_cos(x)    kcosf(x)
+#define STBTT_acos(x)   kacosf(x)
+#define STBTT_fabs(x)   kfabsf(x)
+
+#define STBTT_assert(x) ((void)0)
+
+// Memory management
+#define STBTT_malloc(x,u)  kmalloc(x)
+#define STBTT_free(x,u)    kfree(x)
+
+// String functions
+#define STBTT_memcpy mem_memcpy
+#define STBTT_memset mem_memset
+
+// Data types
+typedef uint64_t STBTT_ptrsize;
+
+typedef struct {
+    void *data;
+    size_t size;
+    void *info; // stbtt_fontinfo
+    float scale;
+    int ascent;
+    int descent;
+    int line_gap;
+} ttf_font_t;
+
+bool font_manager_init(void);
+ttf_font_t* font_manager_load(const char *path, float size);
+void font_manager_render_char(ttf_font_t *font, int x, int y, char c, uint32_t color, void (*put_pixel_fn)(int, int, uint32_t));
+int font_manager_get_string_width(ttf_font_t *font, const char *s);
+
+#endif