1 files changed, 36 insertions, 0 deletions
diff --git a/include/font.h b/include/font.h
new file mode 100644
index 0000000..a1c3d54
--- /dev/null
+++ b/include/font.h
@@ -0,0 +1,36 @@
+#ifndef ECEX_FONT_H
+#define ECEX_FONT_H
+
+#include <GLFW/glfw3.h>
+#include "stb_truetype.h"
+
+#define ECEX_FONT_BITMAP_W 512
+#define ECEX_FONT_BITMAP_H 512
+#define ECEX_FONT_FIRST_CHAR 32
+#define ECEX_FONT_CHAR_COUNT 96
+
+typedef struct font {
+    GLuint texture;
+    stbtt_bakedchar chars[ECEX_FONT_CHAR_COUNT];
+
+    float size_px;
+
+    /*
+     * draw_text() takes y as a baseline. These metrics let render.c place
+     * baselines, highlights, bars, and cursors from the same font-scaled
+     * coordinate system instead of fixed pixel constants.
+     */
+    float ascent_px;
+    float descent_px;
+    float line_gap_px;
+    float line_height;
+} font_t;
+
+const char *font_choose_path(const char *explicit_font_path);
+int font_load(font_t *font, const char *path, float size_px);
+void font_free(font_t *font);
+
+void draw_text(font_t *font, float x, float y, const char *text);
+float text_width(font_t *font, const char *text);
+
+#endif