SkinOverlap
skin_rect_contains_rect( SkinRect *r1, SkinRect *r2 )
{
SkinBox a, b;
skin_box_from_rect( &a, r1 );
skin_box_from_rect( &b, r2 );
if (a.x2 <= b.x1 || b.x2 <= a.x1 || a.y2 <= b.y1 || b.y2 <= a.y1) {
return SKIN_OUTSIDE;
}
if (b.x1 >= a.x1 && b.x2 <= a.x2 && b.y1 >= a.y1 && b.y2 <= a.y2) {
return SKIN_INSIDE;
}
return SKIN_OVERLAP;
}
int
skin_region_iterator_next_box( SkinRegionIterator* iter, SkinBox *box )
{
SkinRect rect;
int result = skin_region_iterator_next( iter, &rect );
if (result)
skin_box_from_rect( box, &rect );
return result;
}
void
skin_box_minmax_update( SkinBox* a, SkinRect* r )
{
SkinBox b[1];
skin_box_from_rect(b, r);
if (b->x1 < a->x1) a->x1 = b->x1;
if (b->y1 < a->y1) a->y1 = b->y1;
if (b->x2 > a->x2) a->x2 = b->x2;
if (b->y2 > a->y2) a->y2 = b->y2;
}
int
skin_rect_intersect( SkinRect* result, SkinRect* r1, SkinRect* r2 )
{
SkinBox a, b, r;
skin_box_from_rect( &a, r1 );
skin_box_from_rect( &b, r2 );
if (a.x2 <= b.x1 || b.x2 <= a.x1 || a.y2 <= b.y1 || b.y2 <= a.y1) {
result->pos.x = result->pos.y = result->size.w = result->size.h = 0;
return 0;
}
r.x1 = (a.x1 > b.x1) ? a.x1 : b.x1;
r.x2 = (a.x2 < b.x2) ? a.x2 : b.x2;
r.y1 = (a.y1 > b.y1) ? a.y1 : b.y1;
r.y2 = (a.y2 < b.y2) ? a.y2 : b.y2;
skin_box_to_rect( &r, result );
return 1;
}
static void
expectRectRegion( Region* r, int x1, int y1, int x2, int y2 )
{
SkinRect rect;
SkinBox b;
printf( "expectRectRegion(%d,%d,%d,%d): ",x1,y1,x2,y2 );
if (!skin_region_is_rect(r)) {
printf( "region not rect !!\n" );
panic();
}
skin_region_get_bounds( r, &rect );
skin_box_from_rect( &b, &rect );
if (b.x1 != x1 || b.x2 != x2 || b.y1 != y1 || b.y2 != y2) {
printf( "rect region bounds are (%d,%d,%d,%d), expecting (%d,%d,%d,%d)\n",
b.x1, b.y1, b.x2, b.y2, x1, y1, x2, y2 );
panic();
}
printf( "ok\n" );
}
