/* set_clip:
* Sets the two opposite corners of the clipping rectangle to be used when
* drawing to the bitmap. Nothing will be drawn to positions outside of this
* rectangle. When a new bitmap is created the clipping rectangle will be
* set to the full area of the bitmap. If x1, y1, x2 and y2 are all zero
* clipping will be turned off, which will slightly speed up drawing
* operations but will allow memory to be corrupted if you attempt to draw
* off the edge of the bitmap.
*/
void set_clip(BITMAP *bitmap, int x1, int y1, int x2, int y2)
{
int t;
ASSERT(bitmap);
if ((!x1) && (!y1) && (!x2) && (!y2)) {
set_clip_rect(bitmap, 0, 0, bitmap->w-1, bitmap->h-1);
set_clip_state(bitmap, FALSE);
return;
}
if (x2 < x1) {
t = x1;
x1 = x2;
x2 = t;
}
if (y2 < y1) {
t = y1;
y1 = y2;
y2 = t;
}
set_clip_rect(bitmap, x1, y1, x2, y2);
set_clip_state(bitmap, TRUE);
}
/* fudge_bitmap:
* Makes b2 be similar to b1 (duplicate clip settings, ID, etc).
*/
static void fudge_bitmap(BITMAP *b1, BITMAP *b2, int copy)
{
int s, x1, y1, x2, y2;
set_clip_state(b2, FALSE);
if (copy)
blit(b1, b2, 0, 0, 0, 0, b1->w, b1->h);
get_clip_rect(b1, &x1, &y1, &x2, &y2);
s = get_clip_state(b1);
set_clip_rect(b2, x1, y1, x2, y2);
set_clip_state(b2, s);
}
BITMAP *set_screen(int fullscreen)
{
const unsigned char
vgargb[16][3] = {
0, 0, 0, /* 0 black */
170, 0, 0, /* 1 red */
0,170, 0, /* 2 green */
170, 85, 0, /* 3 yellow */
0, 0,170, /* 4 blue */
170, 0,170, /* 5 magenta */
0,170,170, /* 6 cyan */
170,170,170, /* 7 white */
85, 85, 85,
255, 85, 85,
85,255, 85,
255,255, 85,
85, 85,255,
255, 85,255,
85,255,255,
255,255,255
};
const unsigned char *rgb;
if (!setgfxmode(fullscreen))
exit(1);
clear_bitmap(screen);
if (set_display_switch_callback(SWITCH_IN, got_focus_back) == -1)
set_display_switch_mode(SWITCH_PAUSE);
BITMAP *bmp = create_bitmap(8 * term_width, 400);
clear_bitmap(bmp);
set_clip_state(bmp, 0);
set_clip_state(screen, 0);
int i;
for (i=0; i<16; i++) {
rgb = &vgargb[i][0];
vgacolors[i] = makecol(rgb[0], rgb[1], rgb[2]);
}
return bmp;
}
