本文整理汇总了Python中qgis.gui.QgsMapCanvas.repaint方法的典型用法代码示例。如果您正苦于以下问题：Python QgsMapCanvas.repaint方法的具体用法？Python QgsMapCanvas.repaint怎么用？Python QgsMapCanvas.repaint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.repaint方法的1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 repaint [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.........