def paintEvent(self, event):
self._painter = QPainter()
self._painter.begin(self)
self._painter.fillRect(0, 0, self.width(), self.height(), self._bgColor)
os.environ["GKSconid"] = getGKSConnectionId(self, self._painter)
gr.clearws()
self.draw()
gr.updatews()
self._painter.end()
def printDialog(self, documentName="qtgr-untitled"):
printer = QPrinter(QPrinter.HighResolution)
printer.setDocName(documentName)
painter = QPainter()
dlg = QPrintDialog(printer)
if dlg.exec_() == QPrintDialog.Accepted:
painter.begin(printer)
os.environ["GKSconid"] = getGKSConnectionId(self, painter)
# upscaling to paper size and
# alignment (horizontal and vertical centering)
xscale = printer.pageRect().width() / float(self.width())
yscale = printer.pageRect().height() / float(self.height())
scale = min(xscale, yscale)
painter.translate(
printer.paperRect().x() + printer.pageRect().width() / 2,
printer.paperRect().y() + printer.pageRect().height() / 2)
painter.scale(scale, scale)
painter.translate(-self.width() / 2, -self.height() / 2)
gr.clearws()
self.draw()
gr.updatews()
painter.end()
