def canvasPressEvent(self, event):
''' Get point and transform to map coordinates '''
# get the current activeVLayer from mainwindow
self.activeVLayer = self.mainwindow.activeVLayer
if self.activeVLayer == None:
return
point = event.pos()
transform = self.canvas.getCoordinateTransform()
# returns a QgsPoint object in map coordinates
self.qgsPoint = transform.toMapCoordinates(point.x(), point.y())
print "The point is " + str(self.qgsPoint)
# check if the proper editing layer is selected
currentLayerName = self.mainwindow.legend.currentItem().canvasLayer.layer().name()
if shared.checkSelectedLayer(self.mainwindow, self.mainwindow.scenarioType,
currentLayerName) == "Cancel":
self.qgsPoint = None
return # if wrong edit layer cancel drawing
# Check constraints on the added point for the scenario edit type
# and prompt the user if constraints are not met. Method returns False
# if the constraints are not met.
if not shared.checkConstraints(self.mainwindow, self.qgsPoint):
self.qgsPoint = None
return
else: pass
# correct editing layer selected and constraints check OK so get the new attributes
self.getNewAttributes()
def canvasPressEvent(self, event):
''' Record the mouse down event '''
# set the active vector layer
self.activeVLayer = self.mainwindow.activeVLayer
if self.activeVLayer == None:
return
# set the current geometry and some variables for the QgsRubberBand
if self.mainwindow.geom:
if self.mainwindow.geom == 1: # line
self.geom = False
else: self.geom = True # polygon
# check if the editing layer is selected but only on the first click
if self.started == False:
currentLayerName = self.mainwindow.legend.currentItem().canvasLayer.layer().name()
if shared.checkSelectedLayer(self.mainwindow, self.mainwindow.scenarioType,
currentLayerName) == "Cancel":
return # return without starting to draw
self.down = True # starts the drawing process
