// Because graphics.c is not included, we must have a copy here.
void Chrom_Key_Alpha(REBVAL *v,REBCNT col,REBINT blitmode) {
REBOOL found=FALSE;
int i;
REBCNT *p;
p=(REBCNT *)VAL_IMAGE_HEAD(v);
i=VAL_IMAGE_WIDTH(v)*VAL_IMAGE_HEIGHT(v);
switch(blitmode) {
case BLIT_MODE_COLOR:
for(;i>0;i--,p++) {
if(*p==col) {
found=TRUE;
*p=col|0xff000000;
}
}
case BLIT_MODE_LUMA:
for(;i>0;i--,p++) {
if(BRIGHT(((REBRGB *)p))<=col) {
found=TRUE;
*p|=0xff000000;
}
}
break;
}
if(found)
VAL_IMAGE_TRANSP(v)=VITT_ALPHA;
}
/*
* vga_set_textattr:
* @vga: VGAtext object
* @textattr: VGA text attribute byte
*
* Set the VGAText's graphics context to use the text attribute given using
* the current VGA palette. May not actually result in a call to the
* graphics server, since redundant calls may be optimized out.
*/
static void
vga_set_textattr(VGAText *vga, guchar textattr)
{
guchar fg, bg;
/*
* Blink logic for text attributes
* -----------------------------------
*
* has no blink bit: normal (fg = fg, bg = bg)
* has blink bit, icecolor: high intensity bg (bg = hi(bg))
* has blink bit, no icecolor, blink_state off: fg = bg [hide]
* has blink bit, no icecolor, blink_state on: normal (fg = fg)
*/
if (!GETBLINK(textattr))
{
fg = GETFG(textattr);
bg = GETBG(textattr);
}
else if (vga->pvt->icecolor)
{ /* High intensity background / iCEColor */
fg = GETFG(textattr);
bg = BRIGHT(GETBG(textattr));
}
else if (vga->pvt->blink_state)
{ /* Blinking, but in on state so it appears normal */
fg = GETFG(textattr);
bg = GETBG(textattr);
if (vga->pvt->blink_timeout_id == -1)
vga_start_blink_timer(vga);
}
else
{ /* Hide, blink off state */
fg = GETBG(textattr);
bg = GETBG(textattr);
if (vga->pvt->blink_timeout_id == -1)
vga_start_blink_timer(vga);
}
if (vga->pvt->fg != fg)
{
#ifdef USE_DEPRECATED_GDK
gdk_gc_set_rgb_fg_color(vga->pvt->gc,
vga_palette_get_color(vga->pvt->pal, fg));
#else
/* Nothing we can really do like this */
#endif
vga->pvt->fg = fg;
}
if (vga->pvt->bg != bg)
{
#ifdef USE_DEPRECATED_GDK
gdk_gc_set_rgb_bg_color(vga->pvt->gc,
vga_palette_get_color(vga->pvt->pal, bg));
#else
#endif
vga->pvt->bg = bg;
}
}
