Hi,
I have coded a GUI where there are QGraphicsView and QTreeView placed, loaded, activated and used.
There is a need to move QGraphicsScene, that is “assigned” ( set ) to the QGraphicsView downward and upward ( a.k.a to scroll vertically and horizontally ) using set scroll bars ( scroll bar policy set to both widgets as ScrollBarAlwaysOn ) synchronously with QTreeView, so that when one of the widgets is scrolled on some number of pixels, to scroll the second as well.
The widgets scrolling connected using next code:
connect(ui->treeView,SIGNAL(scrolled(int,int)),this,SLOT(scroll_gv(int,int)));
connect(ui->graphicsView,SIGNAL(scrolled(int,int)),this,SLOT(scroll_tv(int,int)));
...
void MainWindow::scroll_gv(int dx,int dy)
{
ui->graphicsView->scroll(dx,dy);
}
void MainWindow::scroll_tv(int dx,int dy)
{
ui->treeView->scroll(dx,dy);
}
where the scroll is added to custom classes inherited from QGraphicsView and QTreeView and virtual function reimplemented:
void QCTreeView::scrollContentsBy ( int dx, int dy )
{
emit scrolled(dx,dy);
}
void qcgraphicsview::scrollContentsBy ( int dx, int dy )
{
emit scrolled(dx,dy);
}
The problem to correct is next, when I scroll one of the widgets, the second is scrolled as well, but somehow not accurate – all the area of the widget is scrolled and not a widgets internals,
The scrolling behavior is recorded in next video clip:
https://www.box.com/s/lpaon61oly45fffyu3kn [box.com]
Will you hint why such problem, what properties of the widgets to set, how to code correctly in order the synchronous scroll will work ?
Thanks in advance for your help.
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