Peter Kümmel wrote:
I've tried to fix the resize bug,
- open lyx
- resize to a small window
- load a file
- scroll down a bit <- this is important
- maximize teh window,
but I could only find where it happens
and couldn't figure out how to fix it.
In QWorkArea::resizeEvent the asignment of the
QPixmap with the new size fails because the
painter is active.
This is the Qt message:
QPixmap::operator=: Cannot assign to pixmap during painting
and happens at ---->
void QWorkArea::resizeEvent(QResizeEvent * resizeEvent)
{
workWidth_ = viewport()->width();
workHeight_ = viewport()->height();
verticalScrollBar()->setPageStep(viewport()->height());
// screen_device_ = QPixmap(viewport()->width(), viewport()->height());
// paint_device_ = QImage(viewport()->width(), viewport()->height(),
QImage::Format_RGB32);
----> paint_device_ = QPixmap(viewport()->width(), viewport()->height());
Try to inverse the two lines:
paint_device_ = QPixmap(viewport()->width(), viewport()->height());
verticalScrollBar()->setPageStep(viewport()->height());
I guess the "verticalScrollBar()->setPageStep()" results in a painting
event so paint_device_ is used at the same time it is being re-affected.
If that does not solve the problem, maybe the solution is to use a
shared_ptr<QPixmap> instead of a QPixmap for paint_device_.
Abdel.
