class SimulatorViewer(QtGui.QFrame):
def __init__(self, parent = None):
super(SimulatorViewer, self).__init__(parent)
self.__bitmap = QtGui.QPixmap()
self.__blt_bitmap = QtGui.QImage(self.size(), QtGui.QImage.Format_ARGB32)
self.renderer = QtRenderer(self.__blt_bitmap)
self.__resize_on_paint = False
# code for async calling of update
self.update_ = self.metaObject().method(self.metaObject().indexOfMethod('update()'))
def paintEvent(self, event):
super(SimulatorViewer, self).paintEvent(event)
painter = QtGui.QPainter(self)
painter.fillRect(self.rect(),QtCore.Qt.white)
s = self.__bitmap.rect().size()
s.scale(self.rect().size(),QtCore.Qt.KeepAspectRatio)
dx = (self.width() - s.width())/2
dy = (self.height() - s.height())/2
painter.drawPixmap(QtCore.QRect(QtCore.QPoint(dx,dy),s),self.__bitmap,self.__bitmap.rect())
def update_bitmap(self):
self.__bitmap = QtGui.QPixmap.fromImage(self.__blt_bitmap)
# resize the canvas - at this point nothing is being drawn
if self.__resize_on_paint:
self.__blt_bitmap = QtGui.QImage(self.width(),
self.height(),
QtGui.QImage.Format_ARGB32)
self.renderer.set_canvas(self.__blt_bitmap)
self.__resize_on_paint = False
self.update()
def resizeEvent(self,event):
"""Resize panel and canvas"""
# use cached size and flag
self.__resize_on_paint = True
def __init__(self, parent = None):
super(SimulatorViewer, self).__init__(parent)
self.__bitmap = QtGui.QPixmap()
self.__blt_bitmap = QtGui.QImage(self.size(), QtGui.QImage.Format_ARGB32)
self.renderer = QtRenderer(self.__blt_bitmap)
self.__resize_on_paint = False
# code for async calling of update
self.update_ = self.metaObject().method(self.metaObject().indexOfMethod('update()'))