+
+ // clip on screen borders
+ if(request.pos.x < 0) {
+ surfacepartrequest->size.x += request.pos.x;
+ if(surfacepartrequest->size.x <= 0)
+ return;
+ surfacepartrequest->source.x -= request.pos.x;
+ request.pos.x = 0;
+ }
+ if(request.pos.y < 0) {
+ surfacepartrequest->size.y += request.pos.y;
+ if(surfacepartrequest->size.y <= 0)
+ return;
+ surfacepartrequest->source.y -= request.pos.y;
+ request.pos.y = 0;
+ }