Fortunately, the code required to delete a Point feature will also work for other types of geometries, so we don't need to implement separate DeletePointTool, DeleteLineTool, and DeletePolygonTool classes. Instead, we only need a generic DeleteTool. The following code implements this map tool:
class DeleteTool(QgsMapToolIdentify):
def __init__(self, mapCanvas, layer):
QgsMapToolIdentify.__init__(self, mapCanvas)
self.setCursor(Qt.CrossCursor)
self.layer = layer
self.feature = None
def canvasPressEvent(self, event):
found_features = self.identify(event.x(), event.y(),
[self.layer],
self.TopDownAll)
if len(found_features) > 0:
self.feature = found_features[0].mFeature
else:
self.feature = None
def canvasReleaseEvent(self, event):
found_features = self.identify(event.x(), event...