87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
#ifndef __LIB_GFX_H
|
|
#define __LIB_GFX_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
// gfx library
|
|
|
|
// different graphics formats
|
|
typedef enum {
|
|
GFX_FORMAT_RGB_565,
|
|
GFX_FORMAT_ARGB_8888,
|
|
GFX_FORMAT_RGB_x888,
|
|
|
|
GFX_FORMAT_MAX
|
|
} gfx_format;
|
|
|
|
#define MAX_ALPHA 255
|
|
|
|
/**
|
|
* @brief Describe a graphics drawing surface
|
|
*
|
|
* The gfx_surface object represents a framebuffer that can be rendered
|
|
* to. Elements include a pointer to the actual pixel memory, its size, its
|
|
* layout, and pointers to basic drawing functions.
|
|
*
|
|
* @ingroup graphics
|
|
*/
|
|
typedef struct gfx_surface {
|
|
void *ptr;
|
|
bool free_on_destroy;
|
|
gfx_format format;
|
|
uint width;
|
|
uint height;
|
|
uint stride;
|
|
uint pixelsize;
|
|
size_t len;
|
|
uint alpha;
|
|
|
|
// function pointers
|
|
void (*copyrect)(struct gfx_surface *, uint x, uint y, uint width, uint height, uint x2, uint y2);
|
|
void (*fillrect)(struct gfx_surface *, uint x, uint y, uint width, uint height, uint color);
|
|
void (*putpixel)(struct gfx_surface *, uint x, uint y, uint color);
|
|
void (*flush)(uint starty, uint endy);
|
|
} gfx_surface;
|
|
|
|
// copy a rect from x,y with width x height to x2, y2
|
|
void gfx_copyrect(gfx_surface *surface, uint x, uint y, uint width, uint height, uint x2, uint y2);
|
|
|
|
// fill a rect within the surface with a color
|
|
void gfx_fillrect(gfx_surface *surface, uint x, uint y, uint width, uint height, uint color);
|
|
|
|
// draw a pixel at x, y in the surface
|
|
void gfx_putpixel(gfx_surface *surface, uint x, uint y, uint color);
|
|
|
|
// clear the entire surface with a color
|
|
static inline void gfx_clear(gfx_surface *surface, uint color)
|
|
{
|
|
surface->fillrect(surface, 0, 0, surface->width, surface->height, color);
|
|
|
|
if (surface->flush)
|
|
surface->flush(0, surface->height-1);
|
|
}
|
|
|
|
// blend between two surfaces
|
|
void gfx_surface_blend(struct gfx_surface *target, struct gfx_surface *source, uint destx, uint desty);
|
|
|
|
void gfx_flush(struct gfx_surface *surface);
|
|
|
|
void gfx_flush_rows(struct gfx_surface *surface, uint start, uint end);
|
|
|
|
// surface setup
|
|
gfx_surface *gfx_create_surface(void *ptr, uint width, uint height, uint stride, gfx_format format);
|
|
|
|
// utility routine to make a surface out of a display info
|
|
struct display_info;
|
|
gfx_surface *gfx_create_surface_from_display(struct display_info *);
|
|
|
|
// free the surface
|
|
// optionally frees the buffer if the free bit is set
|
|
void gfx_surface_destroy(struct gfx_surface *surface);
|
|
|
|
// utility routine to fill the display with a little moire pattern
|
|
void gfx_draw_pattern(void);
|
|
|
|
#endif
|
|
|