pandory500/SDL-mirror
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Allow icons of any size

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40592
This commit is contained in:
Sam Lantinga 2003-02-01 20:32:44 +00:00
parent a31d3a0a31
commit 602b6f286b
1 changed files with 15 additions and 12 deletions
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25
test/testwm.c
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@ -15,7 +15,7 @@ SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)
SDL_Surface *icon;
Uint8 *pixels;
Uint8 *mask;
int mlen, i;
int mlen, i, j;
*maskp = NULL;
@ -26,12 +26,15 @@ SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)
return(NULL);
}
/* Check width and height */
/* Check width and height
if ( (icon->w%8) != 0 ) {
fprintf(stderr, "Icon width must be a multiple of 8!\n");
SDL_FreeSurface(icon);
return(NULL);
}
*/
if ( icon->format->palette == NULL ) {
fprintf(stderr, "Icon must have a palette!\n");
SDL_FreeSurface(icon);
@ -47,20 +50,20 @@ SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)
icon->format->palette->colors[*pixels].r,
icon->format->palette->colors[*pixels].g,
icon->format->palette->colors[*pixels].b);
mlen = icon->w*icon->h;
mask = (Uint8 *)malloc(mlen/8);
mlen = (icon->w*icon->h + 7) / 8;
mask = (Uint8 *)malloc(mlen);
if ( mask == NULL ) {
fprintf(stderr, "Out of memory!\n");
SDL_FreeSurface(icon);
return(NULL);
}
memset(mask, 0, mlen/8);
for ( i=0; i<mlen; ) {
if ( pixels[i] != *pixels )
mask[i/8] |= 0x01;
++i;
if ( (i%8) != 0 )
mask[i/8] <<= 1;
memset(mask, 0, mlen);
for ( i=0; i < icon->h; i++)
for (j=0; j < icon->w; j++) {
int pindex = i * icon->pitch + j;
int mindex = i * icon->w + j;
if ( pixels[pindex] != *pixels )
mask[mindex>>3] |= 1 << (7 - (mindex & 7));
}
*maskp = mask;
return(icon);