toaruos/userspace/view.c
Kevin Lange 66c2df40c1 Fix alpha blending for RGBA destinations.
* Also enable PNG loading in `view`
* Also enable RGBA PNG loading in general
2012-09-13 23:22:38 -07:00

75 lines
1.3 KiB
C

/*
* view
*
* Displays bitmap images in windows
*/
#include <stdlib.h>
#include "lib/window.h"
#include "lib/graphics.h"
sprite_t * sprites[128];
sprite_t alpha_tmp;
gfx_context_t * ctx;
void init_sprite(int i, char * filename, char * alpha) {
sprites[i] = malloc(sizeof(sprite_t));
load_sprite(sprites[i], filename);
if (alpha) {
sprites[i]->alpha = 1;
load_sprite(&alpha_tmp, alpha);
sprites[i]->masks = alpha_tmp.bitmap;
} else {
sprites[i]->alpha = 0;
}
sprites[i]->blank = 0x0;
}
int main (int argc, char ** argv) {
if (argc < 2) {
printf("usage: %s file\n", argv[0]);
return -1;
}
int left = 30;
int top = 30;
if (strstr(argv[1], ".png")) {
sprites[0] = malloc(sizeof(sprite_t));
load_sprite_png(sprites[0], argv[1]);
} else {
init_sprite(0, argv[1], NULL);
}
int width = sprites[0]->width;
int height = sprites[0]->height;
setup_windowing();
/* Do something with a window */
window_t * wina = window_create(left, top, width, height);
ctx = init_graphics_window(wina);
draw_fill(ctx, rgb(0,0,0));
if (sprites[0]->alpha == ALPHA_EMBEDDED) {
draw_fill(ctx, rgba(0,0,0,0));
window_enable_alpha(wina);
}
draw_sprite(ctx, sprites[0], 0, 0);
while (1) {
w_keyboard_t * kbd = poll_keyboard();
if (kbd != NULL) {
if (kbd->key == 'q') {
break;
}
free(kbd);
}
}
teardown_windowing();
return 0;
}