本文整理汇总了Python中qgis.gui.QgsMapToolEmitPoint.toCanvasCoordinates方法的典型用法代码示例。如果您正苦于以下问题：Python QgsMapToolEmitPoint.toCanvasCoordinates方法的具体用法？Python QgsMapToolEmitPoint.toCanvasCoordinates怎么用？Python QgsMapToolEmitPoint.toCanvasCoordinates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.QgsMapToolEmitPoint的用法示例。
在下文中一共展示了QgsMapToolEmitPoint.toCanvasCoordinates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: EqDistantDialog
# 需要导入模块: from qgis.gui import QgsMapToolEmitPoint [as 别名]
# 或者: from qgis.gui.QgsMapToolEmitPoint import toCanvasCoordinates [as 别名]
class EqDistantDialog(QtGui.QDialog, FORM_CLASS):
def __init__(self, iface, parent=None): # <---- pass iface
"""Constructor."""
super(EqDistantDialog, self).__init__(parent)
# Set up the user interface from Designer.
# After setupUI you can access any designer object by doing
# self.<objectname>, and you can use autoconnect slots - see
# http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
# #widgets-and-dialogs-with-auto-connect
self.setupUi(self)
self.hdlg = EqDistantDialogHelp()
self.iface = iface # <---- pass iface
self.canvas = iface.mapCanvas()
self.closeEvnt = QtGui.QCloseEvent
def on_btnHelp_pressed(self):
self.hdlg.show()
def on_btnClose_pressed(self):
self.close()
def closeEvent(self, QCloseEvent):
try:
self.canvas.scene().removeItem(self.vm_sa)
self.canvas.scene().removeItem(self.vm_sb)
self.canvas.scene().removeItem(self.vm_ea)
self.canvas.scene().removeItem(self.vm_eb)
except AttributeError:
pass
self.close()
reloadPlugin('EqDistant')
# --- Daerah berhadapan
# fungsi titik awal A
def on_opp_btnStartA_pressed(self):
try:
self.canvas.scene().removeItem(self.vm_sa)
except AttributeError:
pass
self.clickTool = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.iface.messageBar().pushMessage('Info',
'Specify start point for Layer A',
level=QgsMessageBar.INFO,
duration=1)
self.iface.mapCanvas().setMapTool(self.clickTool)
self.clickTool.canvasClicked.connect(self.clicked_start_a)
self.hide()
def clicked_start_a(self, point):
self.start_a = self.clickTool.toMapCoordinates(self.clickTool.toCanvasCoordinates(point))
self.vm_sa = QgsVertexMarker(self.canvas)
self.vm_sa.setCenter(point)
self.lineEdit_sa.setText("%s, %s" % (str(round(self.start_a.x(), 3)),
str(round(self.start_a.y(), 3))))
self.clickTool.deactivate()
self.show()
# fungsi titik akhir A
def on_opp_btnEndA_pressed(self):
try:
self.canvas.scene().removeItem(self.vm_ea)
except AttributeError:
pass
self.clickTool = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.iface.messageBar().pushMessage('Info',
'Specify end point for Layer A',
level=QgsMessageBar.INFO,
duration=1)
self.iface.mapCanvas().setMapTool(self.clickTool)
self.clickTool.canvasClicked.connect(self.clicked_end_a)
self.hide()
def clicked_end_a(self, point):
self.end_a = self.clickTool.toMapCoordinates(self.clickTool.toCanvasCoordinates(point))
self.vm_ea = QgsVertexMarker(self.canvas)
self.vm_ea.setCenter(point)
self.lineEdit_ea.setText("%s, %s" % (str(round(self.end_a.x(), 3)),
str(round(self.end_a.y(), 3))))
self.clickTool.deactivate()
self.show()
# fungsi titik awal B
def on_opp_btnStartB_pressed(self):
try:
self.canvas.scene().removeItem(self.vm_sb)
except AttributeError:
pass
self.clickTool = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.iface.messageBar().pushMessage('Info',
'Specify start point for Layer B',
level=QgsMessageBar.INFO,
duration=1)
self.iface.mapCanvas().setMapTool(self.clickTool)
self.clickTool.canvasClicked.connect(self.clicked_start_b)
self.hide()
def clicked_start_b(self, point):
self.start_b = self.clickTool.toMapCoordinates(self.clickTool.toCanvasCoordinates(point))
self.vm_sb = QgsVertexMarker(self.canvas)
self.vm_sb.setCenter(point)
#.........这里部分代码省略.........