本文整理汇总了Python中qgis.gui.QgsMapCanvas.renderFlag方法的典型用法代码示例。如果您正苦于以下问题：Python QgsMapCanvas.renderFlag方法的具体用法？Python QgsMapCanvas.renderFlag怎么用？Python QgsMapCanvas.renderFlag使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.gui.QgsMapCanvas的用法示例。
在下文中一共展示了QgsMapCanvas.renderFlag方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: MirrorMap
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import renderFlag [as 别名]
class MirrorMap(QWidget):
def __init__(self, parent, iface):
QWidget.__init__(self, parent)
self.setAttribute(Qt.WA_DeleteOnClose)
self.iface = iface
self.layerId2canvasLayer = {}
self.canvasLayers = []
self.setupUi()
def closeEvent(self, event):
# self.scaleFactor.valueChanged.disconnect(self.onExtentsChanged)
QObject.disconnect(self.iface.mapCanvas(), SIGNAL("extentsChanged()"), self.onExtentsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("destinationCrsChanged()"), self.onCrsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("mapUnitsChanged()"), self.onCrsChanged)
QObject.disconnect(self.iface.mapCanvas().mapRenderer(), SIGNAL("hasCrsTransformEnabled(bool)"), self.onCrsTransformEnabled)
QObject.disconnect(QgsMapLayerRegistry.instance(), SIGNAL("layerWillBeRemoved(QString)"), self.delLayer)
QObject.disconnect(self.iface, SIGNAL("currentLayerChanged(QgsMapLayer *)"), self.refreshLayerButtons)
self.emit(SIGNAL("closed(PyQt_PyObject)"), self)
return QWidget.closeEvent(self, event)
def setupUi(self):
self.setObjectName("dockablemirrormap_mirrormap")
gridLayout = QGridLayout(self)
gridLayout.setContentsMargins(0, 0, gridLayout.verticalSpacing(), gridLayout.verticalSpacing())
self.canvas = QgsMapCanvas(self)
self.canvas.setCanvasColor(QColor(255, 255, 255))
settings = QSettings()
self.canvas.enableAntiAliasing(settings.value("/qgis/enable_anti_aliasing", False, type=bool))
self.canvas.useImageToRender(settings.value("/qgis/use_qimage_to_render", False, type=bool))
self.canvas.setWheelAction(3)
gridLayout.addWidget(self.canvas, 0, 0, 1, 5)
QObject.connect(self.iface.mapCanvas(), SIGNAL("extentsChanged()"), self.onExtentsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("destinationCrsChanged()"), self.onCrsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("mapUnitsChanged()"), self.onCrsChanged)
QObject.connect(self.iface.mapCanvas().mapRenderer(), SIGNAL("hasCrsTransformEnabled(bool)"), self.onCrsTransformEnabled)
QObject.connect(QgsMapLayerRegistry.instance(), SIGNAL("layerWillBeRemoved(QString)"), self.delLayer)
self.onExtentsChanged()
self.onCrsChanged()
self.onCrsTransformEnabled(self.iface.mapCanvas().hasCrsTransformEnabled())
def toggleRender(self, enabled):
self.canvas.setRenderFlag(enabled)
self.canvas.refresh()
self.canvas.repaint()
def onExtentsChanged(self):
try :
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
self.canvas.setExtent(self.iface.mapCanvas().extent())
# self.canvas.zoomByFactor( self.scaleFactor.value() )
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
pass
def mirror_extent_changed(self):
logger.debug(self.canvas.extent())
logger.debug(self.iface.mapCanvas().extent())
if self.canvas.extent() != self.iface.mapCanvas().extent():
self.emit(SIGNAL("extentChanged( QgsRectangle )"), self.canvas.extent())
def onCrsChanged(self):
try:
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
renderer = self.iface.mapCanvas().mapRenderer()
self._setRendererCrs(self.canvas.mapRenderer(), self._rendererCrs(renderer))
self.canvas.mapRenderer().setMapUnits(renderer.mapUnits())
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
pass
def onCrsTransformEnabled(self, enabled):
try:
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag(False)
self.canvas.mapRenderer().setProjectionsEnabled(enabled)
self.canvas.setRenderFlag(prevFlag)
self.canvas.repaint()
self.canvas.refresh()
except Exception:
#.........这里部分代码省略.........
示例2: AuxiliaryWindow
# 需要导入模块: from qgis.gui import QgsMapCanvas [as 别名]
# 或者: from qgis.gui.QgsMapCanvas import renderFlag [as 别名]
#.........这里部分代码省略.........
if len( self.qgisTView.selectedLayerNodes() ) > 0:
self.onAddSelectedLayersQgis()
else:
ltn = self.qgisTView.currentNode()
if not isinstance( ltn, QgsLayerTreeGroup ):
return False
else:
if ltn == self.root:
return False
else:
if not self._syncGroupAddLayersQgis( ltn ):
return False
self.dockLegend.setBridge( self.canvas)
self.canvas.setRenderFlag( False )
self.show() # Need show before self._connect()
self._connect()
self.canvas.setExtent( self.qgisCanvas.extent() )
w = self.findChild( QDoubleSpinBox, 'scaleFactorSpin')
w.setValue( 1 )
self.canvas.setRenderFlag( True )
return True
def getLayersCanvas(self):
layerIds = map(lambda x: x.layerId(), self.ltg.findLayers() )
layerChecks = map(lambda x: str( x.isVisible() ), self.ltg.findLayers() )
return ( layerIds, layerChecks )
def setLayersCanvas(self, layerIds, layerChecks ):
prevFlag = self.canvas.renderFlag()
self.canvas.setRenderFlag( False )
lyrRegs = QgsMapLayerRegistry.instance()
for id in range( len( layerIds ) ):
layer = lyrRegs.mapLayer( layerIds[id] )
isVisible = int( layerChecks[id] )
if not layer is None:
self.ltg.addLayer( layer ).setVisible( isVisible )
self.canvas.setRenderFlag( prevFlag )
def getWindowSetting(self):
g = self.geometry()
r = self.canvas.extent()
nodes = self.ltg.findLayers()
currentLayer = self.dockLegend.tview.currentLayer()
currentLayerId = currentLayer.id() if not currentLayer is None else "None"
windowSetting = {
'numWin': self.numWin,
'geometryWin': { 'x': g.x(), 'y': g.y(), 'width': g.width(), 'height': g.height() },
'extentCanvas': { 'xmin': r.xMinimum(), 'ymin': r.yMinimum(), 'xmax': r.xMaximum(), 'ymax': r.yMaximum() },
'currentLayerId': currentLayerId,
'layerIds' : ' '.join( map(lambda item: item.layerId(), nodes ) ),
'visibles': ' '.join( map(lambda item: str( int( item.isVisible() ) ), nodes ) )
}
for item in ( 'render', 'marker', 'extent' ):
nameGui = "%sCheck" % item
windowSetting[ item ] = int( self.findChild( QCheckBox, nameGui).isChecked() )
return windowSetting