Details
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Bug
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Resolution: Done
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Not Evaluated
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4.6.0, 4.6.1, 4.6.2
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None
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0b8639aee92913cdfaa4386aa09dde0f5cb2eaee
Description
This bug is new in 4.6.0 and do not appears in 4.5.2. Run application below on Windows:
#include <QtGui> int main(int argc, char *argv[]) { QApplication app(argc, argv); QGraphicsView view; QGraphicsScene scene; scene.setSceneRect(0,0,300,200); view.setScene(&scene); QGraphicsTextItem item; item.setPlainText("Bug"); scene.addItem(&item); view.scale(10.,10.); view.show(); return app.exec(); }
Wrong QGraphicsTextItem painting appears when scrolling via scrollbars. This bug is not in QGraphicsTextItem only, but in any 
QGraphicsItem derived class, which uses itemStyle->exposedRect in paint(). itemStyle->exposedRect do not reflects real rect for repainting => wrong item's painting.
Reopened: This is still broken for QGraphicsWidget which can be seen in the following example:
#include <QApplication> #include <QGroupBox> #include <QLabel> #include <QLineEdit> #include <QFormLayout> #include <QGraphicsScene> #include <QGraphicsView> #include <QGraphicsProxyWidget> int main( int argc, char **argv ) { QApplication app(argc, argv); QGraphicsScene scene; QGroupBox *groupBox1 = new QGroupBox("Contact Details"); QLabel *numberLabel1 = new QLabel("Telephone"); QLineEdit *numberEdit1 = new QLineEdit; QFormLayout *layout1 = new QFormLayout; layout1->addRow(numberLabel1, numberEdit1); groupBox1->setLayout(layout1); QGraphicsProxyWidget *proxy1 = scene.addWidget(groupBox1); QGraphicsView view(&scene); view.setDragMode(QGraphicsView::ScrollHandDrag); view.scale ( 2, 2 ); view.show(); return app.exec(); }