Class: QgsMapToolExtent¶

class qgis.gui.QgsMapToolExtent(canvas: QgsMapCanvas)¶

Bases: QgsMapTool

constructor

A map tool that emits an extent from a rectangle drawn onto the map canvas.

New in version 3.0.

Parameters: canvas –

activate(self)¶

canvasMoveEvent(self, e: QgsMapMouseEvent)¶

Parameters: e (QgsMapMouseEvent) –

canvasPressEvent(self, e: QgsMapMouseEvent)¶

Parameters: e (QgsMapMouseEvent) –

canvasReleaseEvent(self, e: QgsMapMouseEvent)¶

Parameters: e (QgsMapMouseEvent) –

childEvent()¶

connectNotify()¶

customEvent()¶

deactivate(self)¶

disconnectNotify()¶

extent(self) → QgsRectangle¶

Returns the current extent drawn onto the canvas.

Return type: QgsRectangle

extentChanged¶: signal emitted on extent change [signal]

flags(self) → QgsMapTool.Flags¶

Return type: QgsMapTool.Flags

isSignalConnected()¶

ratio(self) → QSize¶

Returns the current fixed aspect ratio to be used when dragging extent onto the canvas. If the aspect ratio isn’t fixed, the width and height will be set to zero.

Return type: QSize

receivers()¶

sender()¶

senderSignalIndex()¶

setRatio(self, ratio: QSize)¶

Sets a fixed aspect ratio to be used when dragging extent onto the canvas. To unset a fixed aspect ratio, set the width and height to zero.

Parameters: ratio (QSize) – aspect ratio’s width and height

timerEvent()¶

toCanvasCoordinates()¶

toLayerCoordinates()¶

toMapCoordinates()¶

toMapCoordinatesV2()¶