void ChatView::init(MessageFilter *filter) {
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- setAlignment(Qt::AlignBottom);
+ setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+ setAlignment(Qt::AlignLeft|Qt::AlignBottom);
setInteractive(true);
//setOptimizationFlags(QGraphicsView::DontClipPainter | QGraphicsView::DontAdjustForAntialiasing);
// setOptimizationFlags(QGraphicsView::DontAdjustForAntialiasing);
_scrollTimer.setSingleShot(true);
connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
- _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 4, this); // see below: resizeEvent()
- connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(sceneRectChanged(const QRectF &)));
+ _scene = new ChatScene(filter, filter->idString(), viewport()->width(), this);
+ connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(adjustSceneRect()));
connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
connect(_scene, SIGNAL(mouseMoveWhileSelecting(const QPointF &)), this, SLOT(mouseMoveWhileSelecting(const QPointF &)));
setScene(_scene);
// we can reduce viewport updates if we scroll to the bottom allready at the beginning
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
-
- // FIXME: without the hardcoded -4 Qt reserves space for a horizontal scrollbar even though it's disabled permanently.
- // this does only occur on QtX11 (at least not on Qt for Mac OS). Seems like a Qt Bug.
- scene()->updateForViewport(viewport()->width() - 4, viewport()->height());
+ scene()->updateForViewport(viewport()->width(), viewport()->height());
+ adjustSceneRect();
_lastScrollbarPos = verticalScrollBar()->maximum();
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
+void ChatView::adjustSceneRect() {
+ // Workaround for QTBUG-6322
+ // If the viewport's sceneRect() is (almost) as wide as as the viewport itself,
+ // Qt wants to reserve space for scrollbars even if they're turned off, resulting in
+ // an ugly white space at the bottom of the ChatView.
+ // Since the view's scene's width actually doesn't matter at all, we just adjust it
+ // by some hopefully large enough value to avoid this problem.
+
+ setSceneRect(scene()->sceneRect().adjusted(0, 0, -25 ,0));
+}
+
void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos) {
int y = (int)mapFromScene(scenePos).y();
_scrollOffset = 0;