g_error rdhandle(void **p,unsigned char reqtype,int owner,handle h) {
void **x;
g_error e;
e = rdhandlep(&x,reqtype,owner,h);
#ifdef DEBUG_MEMORY
if (iserror(e))
printf("rdhandle error (0x%08X)\n",h);
#endif
errorcheck;
if (x)
*p = *x;
else
*p = NULL;
return success;
}
g_error cursor_set_theme(struct cursor *crsr, int thobj) {
hwrbitmap *bitmap,*mask;
s16 w,h;
bool redisplay;
g_error e;
crsr->thobj = thobj;
/* Read the cursor bitmap and bitmask. Note that if the cursor is rectangular
* or it uses an alpha channel the mask will be NULL.
*/
e = rdhandlep((void***)&bitmap,PG_TYPE_BITMAP,-1,theme_lookup(thobj,PGTH_P_CURSORBITMAP));
errorcheck;
mask = NULL;
e = rdhandlep((void***)&mask,PG_TYPE_BITMAP,-1,theme_lookup(thobj,PGTH_P_CURSORBITMASK));
errorcheck;
if (crsr->sprite && bitmap==crsr->sprite->bitmap && mask==crsr->sprite->mask)
return success;
/* If there's no bitmap yet, it's early in init and the default cursor
* hasn't been created yet. Skip this all.
*/
if (!bitmap)
return success;
VID(bitmap_getsize) (*bitmap,&w,&h);
/* Insert the new bitmaps, resize/create the sprite if necessary */
redisplay = crsr->sprite && crsr->sprite->onscreen;
if (redisplay)
VID(sprite_hide) (crsr->sprite);
/* Update the hotspot before cursor_move */
crsr->hotspot_x = theme_lookup(thobj,PGTH_P_CRSRHOTSPOT_X);
crsr->hotspot_y = theme_lookup(thobj,PGTH_P_CRSRHOTSPOT_Y);
if (!crsr->sprite) {
int x,y;
struct divtree *dt;
/* Get the default position */
cursor_getposition(crsr,&x,&y,&dt);
/* Create a new sprite (default hidden, as per description in input.h) */
e = new_sprite(&crsr->sprite,dt,w,h);
errorcheck;
crsr->sprite->visible = 0;
/* Set the bitmap up, and move it */
crsr->sprite->bitmap = bitmap;
crsr->sprite->mask = mask;
cursor_move(crsr, x,y, dt);
}
else {
/* Since we're not creating a new sprite, we might need to move the hotspot
*/
crsr->sprite->x = crsr->x - crsr->hotspot_x;
crsr->sprite->y = crsr->y - crsr->hotspot_y;
if ( (w!=crsr->sprite->w) || (h!=crsr->sprite->h) ) {
/* Resize an existing sprite
*/
VID(bitmap_free) (crsr->sprite->backbuffer);
e = VID(bitmap_new) (&crsr->sprite->backbuffer,w,h,vid->bpp);
errorcheck;
crsr->sprite->w = w;
crsr->sprite->h = h;
}
crsr->sprite->bitmap = bitmap;
crsr->sprite->mask = mask;
}
/* If the cursor has an alpha channel, set the LGOP accordingly */
if (w && h && (VID(getpixel)(*bitmap,0,0) & PGCF_ALPHA))
crsr->sprite->lgop = PG_LGOP_ALPHA;
else
crsr->sprite->lgop = PG_LGOP_NONE;
if (redisplay)
VID(sprite_show)(crsr->sprite);
/* Whether it was onscreen or not, show it at the next convenient opportunity */
crsr->sprite->visible = 1;
return success;
}
