Function PiuScrollerUpdate

modules/piu/All/piuScroller.c:402–460

}

void PiuScrollerUpdate(void* it, PiuView* view, PiuRectangle area) 
{
	PiuScroller* self = it;
	if ((*self)->flags & piuVisible) {
		PiuRectangle bounds = &((*self)->bounds);
		PiuBoolean clip = ((*self)->flags & piuClip) ? 1 : 0;
		PiuBoolean intersect;
		PiuRectangleRecord intersection;
		if (clip)
			intersect = PiuRectangleIntersect(&intersection, bounds, area);
		else
			intersect = PiuRectangleIntersects(bounds, area);
		if (!clip || intersect) {
			PiuContent* content = (*self)->first;
			PiuCoordinate x = bounds->x;
			PiuCoordinate y = bounds->y;
 			PiuRectangle temporary;
			PiuViewPushOrigin(view, x, y);
			PiuRectangleOffset(area, -x, -y);
			if (intersect)
				(*(*self)->dispatch->draw)(self, view, area);
			if (clip) {
				PiuViewPushClip(view, 0, 0, bounds->width, bounds->height);
				temporary = &intersection;
				PiuRectangleOffset(temporary, -x, -y);
			}
			else
				temporary = area;
			if (content) {
				(*(*content)->dispatch->update)(content, view, temporary);
				if ((*self)->flags & piuLooping) {
					PiuRectangle loop;
					bounds = &((*self)->bounds);
					loop = &((*content)->bounds);
					if (loop->width > bounds->width)
						loop->x += loop->width;
					if (loop->height > bounds->height)
						loop->y += loop->height;
					(*(*content)->dispatch->update)(content, view, temporary);
					bounds = &((*self)->bounds);
					loop = &((*content)->bounds);
					if (loop->width > bounds->width)
						loop->x -= loop->width;
					if (loop->height > bounds->height)
						loop->y -= loop->height;
				}
				content = (*content)->next;
				while (content) {
					(*(*content)->dispatch->update)(content, view, temporary);
					content = (*content)->next;
				}
			}
			if (clip)
				PiuViewPopClip(view);
			PiuRectangleOffset(area, x, y);
			PiuViewPopOrigin(view);
		}
	}