Ejemplo n.º 1
0
bool ScrollArea::touchScroll(const QPoint &delta) {
	int32 scTop = scrollTop(), scMax = scrollTopMax(), scNew = snap(scTop - delta.y(), 0, scMax);
	if (scNew == scTop) return false;

	scrollToY(scNew);
	return true;
}
Ejemplo n.º 2
0
void ScrollArea::scrollToY(int toTop, int toBottom) {
	myEnsureResized(widget());
	myEnsureResized(this);

	int toMin = 0, toMax = scrollTopMax();
	if (toTop < toMin) {
		toTop = toMin;
	} else if (toTop > toMax) {
		toTop = toMax;
	}
	bool exact = (toBottom < 0);

	int curTop = scrollTop(), curHeight = height(), curBottom = curTop + curHeight, scToTop = toTop;
	if (!exact && toTop >= curTop) {
		if (toBottom < toTop) toBottom = toTop;
		if (toBottom <= curBottom) return;

		scToTop = toBottom - curHeight;
		if (scToTop > toTop) scToTop = toTop;
		if (scToTop == curTop) return;
	} else {
		scToTop = toTop;
	}
	verticalScrollBar()->setValue(scToTop);
}