+// Workaround for QTBUG-6322
+// The viewport rect gets some margins where it shouldn't, resulting in scrollbars to appear
+void ChatView::adjustSceneRect() {
+ static qreal voffset = 0;
+ static bool offsetStable = false;
+
+ QRectF rect = scene()->sceneRect();
+ if(rect.height() <= viewport()->height()) {
+ setSceneRect(rect);
+ return;
+ }
+ if(offsetStable && rect.height() > viewport()->height())
+ setSceneRect(rect.adjusted(0, 0, 0, voffset));
+ else {
+ setSceneRect(rect);
+
+ QScrollBar *vbar = verticalScrollBar();
+ qreal sceneHeight = rect.height();
+ qreal viewHeight = vbar->maximum() + viewport()->height() - vbar->minimum();
+ if(sceneHeight != viewHeight) {
+ voffset = sceneHeight - viewHeight;
+ // qDebug() << "Adjusting ChatView offset to" << voffset << "(QTBUG-6322)";
+ if(sceneHeight + voffset <= viewport()->height()) {
+ setSceneRect(rect.adjusted(0, -voffset, 0, 0));
+ offsetStable = false;
+ return;
+ } else
+ setSceneRect(rect.adjusted(0, 0, 0, voffset));
+ }
+ if(vbar->maximum() + viewport()->height() - vbar->minimum() != sceneHeight)
+ qWarning() << "Workaround for QTBUG-6322 failed!1!!" << vbar->maximum() + viewport()->height() - vbar->minimum() << sceneHeight;
+ else
+ offsetStable = true;
+ }
+}
+