def _drawBackgroundGL(self, painter: QPainter, rect: QRectF):
"""This method is for overloading the QGraphicsScene.
"""
if (painter.paintEngine().type() != QPaintEngine.OpenGL
and painter.paintEngine().type() != QPaintEngine.OpenGL2):
qWarning("OpenGLScene: drawBackground needs a QGLWidget to be"
"set as viewport on the graphics view")
return
# end if
painter.beginNativePainting()
GL.glDisable(GL.GL_DEPTH_TEST) # disable for 2D drawing
GL.glClearColor(1.0, 1.0, 1.0, 1.0)
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
painter.endNativePainting()
def __grabRegion(self):
"""
Private method to grab the selected region (i.e. do the snapshot).
"""
pol = QPolygon(self.__selection)
if not pol.isEmpty():
self.__grabbing = True
xOffset = self.__pixmap.rect().x() - pol.boundingRect().x()
yOffset = self.__pixmap.rect().y() - pol.boundingRect().y()
translatedPol = pol.translated(xOffset, yOffset)
pixmap2 = QPixmap(pol.boundingRect().size())
pixmap2.fill(Qt.transparent)
pt = QPainter()
pt.begin(pixmap2)
if pt.paintEngine().hasFeature(QPaintEngine.PorterDuff):
pt.setRenderHints(
QPainter.Antialiasing |
QPainter.HighQualityAntialiasing |
QPainter.SmoothPixmapTransform,
True)
pt.setBrush(Qt.black)
pt.setPen(QPen(QBrush(Qt.black), 0.5))
pt.drawPolygon(translatedPol)
pt.setCompositionMode(QPainter.CompositionMode_SourceIn)
else:
pt.setClipRegion(QRegion(translatedPol))
pt.setCompositionMode(QPainter.CompositionMode_Source)
pt.drawPixmap(pixmap2.rect(), self.__pixmap, pol.boundingRect())
pt.end()
self.grabbed.emit(pixmap2)
def _drawBackgroundGL(self, painter: QPainter, rect: QRectF):
"""This method is for overloading the QGraphicsScene.
"""
if (painter.paintEngine().type() != QPaintEngine.OpenGL and
painter.paintEngine().type() != QPaintEngine.OpenGL2):
qWarning("OpenGLScene: drawBackground needs a QGLWidget to be"
"set as viewport on the graphics view")
return
# end if
painter.beginNativePainting()
GL.glDisable(GL.GL_DEPTH_TEST) # disable for 2D drawing
GL.glClearColor(1.0, 1.0, 1.0, 1.0)
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
painter.endNativePainting()
def __grabRect(self):
"""
Private method to grab the selected rectangle (i.e. do the snapshot).
"""
if self.__mode == SnapshotRegionGrabber.Ellipse:
ell = QRegion(self.__selection, QRegion.Ellipse)
if not ell.isEmpty():
self.__grabbing = True
xOffset = self.__pixmap.rect().x() - ell.boundingRect().x()
yOffset = self.__pixmap.rect().y() - ell.boundingRect().y()
translatedEll = ell.translated(xOffset, yOffset)
pixmap2 = QPixmap(ell.boundingRect().size())
pixmap2.fill(Qt.transparent)
pt = QPainter()
pt.begin(pixmap2)
if pt.paintEngine().hasFeature(QPaintEngine.PorterDuff):
pt.setRenderHints(
QPainter.Antialiasing |
QPainter.HighQualityAntialiasing |
QPainter.SmoothPixmapTransform,
True)
pt.setBrush(Qt.black)
pt.setPen(QPen(QBrush(Qt.black), 0.5))
pt.drawEllipse(translatedEll.boundingRect())
pt.setCompositionMode(QPainter.CompositionMode_SourceIn)
else:
pt.setClipRegion(translatedEll)
pt.setCompositionMode(QPainter.CompositionMode_Source)
pt.drawPixmap(pixmap2.rect(), self.__pixmap,
ell.boundingRect())
pt.end()
self.grabbed.emit(pixmap2)
else:
r = QRect(self.__selection)
if not r.isNull() and r.isValid():
self.__grabbing = True
self.grabbed.emit(self.__pixmap.copy(r))
def __grabRect(self):
"""
Private method to grab the selected rectangle (i.e. do the snapshot).
"""
if self.__mode == SnapshotRegionGrabber.Ellipse:
ell = QRegion(self.__selection, QRegion.Ellipse)
if not ell.isEmpty():
self.__grabbing = True
xOffset = self.__pixmap.rect().x() - ell.boundingRect().x()
yOffset = self.__pixmap.rect().y() - ell.boundingRect().y()
translatedEll = ell.translated(xOffset, yOffset)
pixmap2 = QPixmap(ell.boundingRect().size())
pixmap2.fill(Qt.transparent)
pt = QPainter()
pt.begin(pixmap2)
if pt.paintEngine().hasFeature(QPaintEngine.PorterDuff):
pt.setRenderHints(
QPainter.Antialiasing
| QPainter.HighQualityAntialiasing
| QPainter.SmoothPixmapTransform, True)
pt.setBrush(Qt.black)
pt.setPen(QPen(QBrush(Qt.black), 0.5))
pt.drawEllipse(translatedEll.boundingRect())
pt.setCompositionMode(QPainter.CompositionMode_SourceIn)
else:
pt.setClipRegion(translatedEll)
pt.setCompositionMode(QPainter.CompositionMode_Source)
pt.drawPixmap(pixmap2.rect(), self.__pixmap,
ell.boundingRect())
pt.end()
self.grabbed.emit(pixmap2)
else:
r = QRect(self.__selection)
if not r.isNull() and r.isValid():
self.__grabbing = True
self.grabbed.emit(self.__pixmap.copy(r))
