#ifndef _AO_DRAW_H_
#define _AO_DRAW_H_
+#include <stdint.h>
+#include <stdbool.h>
+#include "ao_font.h"
+#include "ao_box.h"
+
struct ao_bitmap {
uint32_t *base;
int16_t stride; /* in units */
int16_t width; /* in pixels */
int16_t height; /* in pixels */
+ struct ao_box damage;
+};
+
+#define AO_BITMAP_STRIDE(width) (((width) + 31) >> 5)
+
+struct ao_coord {
+ float x, y;
};
+struct ao_transform {
+ float x_scale, x_off;
+ float y_scale, y_off;
+};
+
+static inline float ao_t_x(float x, float y, const struct ao_transform *t)
+{
+ (void) y;
+ return x * t->x_scale + t->x_off;
+}
+
+static inline int16_t ao_t_xi(float x, float y, const struct ao_transform *t)
+{
+ return (int16_t) (ao_t_x(x, y, t) + 0.5f);
+}
+
+static inline float ao_t_y(float x, float y, const struct ao_transform *t)
+{
+ (void) x;
+ return y * t->y_scale + t->y_off;
+}
+
+static inline int16_t ao_t_yi(float x, float y, const struct ao_transform *t)
+{
+ return (int16_t) (ao_t_y(x, y, t) + 0.5f);
+}
+
+static inline float ao_t_x_c(const struct ao_coord *c,
+ const struct ao_transform *t)
+{
+ return ao_t_x(c->x, c->y, t);
+}
+
+static inline float ao_t_y_c(const struct ao_coord *c,
+ const struct ao_transform *t)
+{
+ return ao_t_y(c->x, c->y, t);
+}
+
+static inline int16_t
+ao_stride(int16_t width)
+{
+ return (int16_t) ((width + 31) >> 5);
+}
+
+static inline int16_t
+ao_stride_bytes(int16_t width)
+{
+ return (int16_t) ((width + 7) >> 3);
+}
+
+static inline void
+ao_damage_set_empty(struct ao_bitmap *dst)
+{
+ ao_box_set_empty(&dst->damage);
+}
+
struct ao_pattern {
uint8_t pattern[8];
};
+struct ao_glyph_metrics {
+ int8_t width;
+ int8_t height;
+ int8_t x_off;
+ int8_t y_off;
+ int8_t advance;
+};
+
+struct ao_font {
+ const uint8_t *bytes;
+ const uint16_t *pos;
+ const struct ao_glyph_metrics *metrics;
+ int16_t max_width;
+ int16_t max_height;
+ int16_t ascent;
+};
+
void
-ao_copy(const struct ao_bitmap *dst,
+ao_copy(struct ao_bitmap *dst,
int16_t dst_x,
int16_t dst_y,
int16_t width,
uint8_t rop);
void
-ao_rect(const struct ao_bitmap *dst,
+ao_rect(struct ao_bitmap *dst,
int16_t x,
int16_t y,
int16_t width,
uint8_t rop);
void
-ao_pattern(const struct ao_bitmap *dst,
+ao_pattern(struct ao_bitmap *dst,
int16_t x,
int16_t y,
int16_t width,
uint8_t rop);
void
-ao_line(const struct ao_bitmap *dst,
+ao_line(struct ao_bitmap *dst,
int16_t x1,
int16_t y1,
int16_t x2,
uint8_t rop);
void
-ao_text(const struct ao_bitmap *dst,
+ao_poly(struct ao_bitmap *dst,
+ const struct ao_coord *coords,
+ uint16_t ncoords,
+ const struct ao_transform *transform,
+ uint32_t fill,
+ uint8_t rop);
+
+int16_t
+ao_text(struct ao_bitmap *dst,
+ const struct ao_font *font,
int16_t x,
int16_t y,
- char *string,
+ const char *string,
uint32_t fill,
uint8_t rop);
-struct ao_font {
- int width;
- int height;
- int ascent;
- int descent;
-};
+void
+ao_logo(struct ao_bitmap *dst,
+ const struct ao_transform *transform,
+ const struct ao_font *font,
+ uint32_t fill,
+ uint8_t rop);
-extern const struct ao_font ao_font;
+extern const struct ao_transform ao_identity;
#define AO_SHIFT 5
#define AO_UNIT (1 << AO_SHIFT)
#define AO_NAND 0xe /* NOT src OR NOT dst */
#define AO_SET 0xf /* 1 */
+#define AO_WHITE 0xffffffff
+#define AO_BLACK 0x00000000
+
#endif /* _AO_DRAW_H_ */