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#include <ui/display.h>
#include <ui/image.h>
#include <ui/sdl.h>
#include <stdio.h>
#include <SDL.h>
#define SDL_PRIV(d) ((struct sdl_display*)(d)->priv)
#define REFRESH_INTERVAL_MSEC 50
struct sdl_display {
SDL_Surface *display;
SDL_TimerID refresh;
unsigned width;
unsigned height;
unsigned scale;
};
static Uint32 sdl_redraw_callback(Uint32 interval, void *param) {
struct display *display = (struct display*)param;
display->draw(display);
return interval;
}
void
sdl_init(struct display *display,
unsigned width, unsigned height, unsigned scale)
{
if(SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER)) {
printf("Failed to initialize SDL: %s\n", SDL_GetError());
exit(1);
}
atexit(&SDL_Quit);
struct sdl_display *priv = SDL_PRIV(display);
priv->width = width;
priv->height = height;
priv->scale = scale;
priv->display = SDL_SetVideoMode(width * scale, height * scale, 32, 0);
if(!priv->display) {
printf("Failed to set SDL video mode: %s\n", SDL_GetError());
exit(1);
}
priv->refresh = SDL_AddTimer(REFRESH_INTERVAL_MSEC,
&sdl_redraw_callback, display);
if(!priv->refresh) {
printf("Failed to add refresh timer: %s\n", SDL_GetError());
exit(1);
}
}
void
sdl_draw(struct display *display)
{
struct sdl_display *priv = SDL_PRIV(display);
struct image *img = display->fbuf;
SDL_Rect r;
r.w = priv->scale;
r.h = priv->scale;
if(img->type == PXTYPE_RGB444) {
unsigned stride = img->size.w * 2;
unsigned x, y;
for(y = 0; y < img->size.h; y++) {
for(x = 0; x < img->size.w; x++) {
px_t color = image_get_pixel(img, x, y);
r.x = x * priv->scale;
r.y = y * priv->scale;
SDL_FillRect(priv->display, &r, color);
}
}
} else {
puts("Unsupported framebuffer type for SDL emulator.");
exit(1);
}
SDL_UpdateRect(priv->display, 0, 0, 0, 0);
}
static struct sdl_display display_sdl_priv;
uint8_t sdl_fbuf[96*64*2];
struct image display_sdl_fbuf = {
.type = PXTYPE_RGB444,
.size = {96, 64},
.data = &sdl_fbuf
};
struct display display_sdl = {
.name = "Main Display",
.fbuf = &display_sdl_fbuf,
.priv = &display_sdl_priv,
.draw = &sdl_draw
};
uint16_t fnord_buf[] = {
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF,
0x0F00,
0x00F0,
0x000F,
0x00FF
};
struct image fnord = {
.type = PXTYPE_RGB444,
.size = {8,4},
.data = &fnord_buf
};
uint8_t fubar_img[] = {
0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c,
0x0d, 0x0e, 0x0f, 0x0f
};
struct image fubar = {
.type = PXTYPE_MONO_V8,
.size = {8,16},
.data = &fubar_img
};
void
sdl_run(void)
{
int r;
SDL_Event e;
while((r = SDL_WaitEvent(&e))) {
if(e.type == SDL_KEYDOWN) {
if(e.key.keysym.sym == SDLK_ESCAPE) {
puts("Bloody quitter!");
break;
}
if(e.key.keysym.sym == SDLK_SPACE) {
pxposn_t dp = {0,0};
pxposn_t sp = {0,0};
pxdims_t d = {8,4};
image_blit(&display_sdl_fbuf, dp,
&fnord, sp,
d);
sp.x = 0;
sp.y = 0;
dp.x = 5;
dp.y = 10;
d.w = 8;
d.h = 16;
image_blit(&display_sdl_fbuf, dp,
&fubar, sp,
d);
pxrect_t r = {{12,0},{40,20}};
image_fill_rect(&display_sdl_fbuf,
r,
0xFF00FF);
#if 0
dp.x = 0;
dp.y = 0;
image_draw_string(&display_sdl_fbuf, dp,
"ABCDEFGHI");
dp.y += 10;
image_draw_string(&display_sdl_fbuf, dp,
"abcdefghi");
#endif
sdl_draw(&display_sdl);
}
}
switch(e.type) {
case SDL_KEYDOWN:
case SDL_KEYUP:
printf("Key %d %d\n", e.key.keysym.sym, e.key.state);
break;
}
}
if(!r) {
printf("Failed to wait for SDL event: %s\n", SDL_GetError());
exit(1);
}
}
int
main(void)
{
sdl_init(&display_sdl, 96, 64, 4);
sdl_run();
return 0;
}
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