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
(self, QChildEvent)¶
-
connectNotify
(self, QMetaMethod)¶
-
customEvent
(self, QEvent)¶
-
deactivate
(self)¶
-
disconnectNotify
(self, QMetaMethod)¶
-
extent
(self) → QgsRectangle¶ Returns the current extent drawn onto the canvas.
- Return type
-
extentChanged
¶ signal emitted on extent change [signal]
- Parameters
extent (QgsRectangle) –
-
flags
(self) → QgsMapTool.Flags¶ - Return type
-
isSignalConnected
(self, QMetaMethod) → bool¶
-
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
(self, PYQT_SIGNAL) → int¶
-
sender
(self) → QObject¶
-
senderSignalIndex
(self) → int¶
-
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
(self, QTimerEvent)¶
-
toCanvasCoordinates
(self, point: QgsPointXY) → QPoint¶ transformation from map coordinates to screen coordinates
-
toLayerCoordinates
(self, layer: QgsMapLayer, point: QPoint) → QgsPointXY¶ transformation from screen coordinates to layer’s coordinates
toLayerCoordinates(self, layer:
QgsMapLayer
, point:QgsPointXY
) -> QgsPointXY transformation from map coordinates to layer’s coordinatestoLayerCoordinates(self, layer:
QgsMapLayer
, rect:QgsRectangle
) -> QgsRectangle trnasformation of the rect from map coordinates to layer’s coordinates
-
toMapCoordinates
(self, point: QPoint) → QgsPointXY¶ transformation from screen coordinates to map coordinates
toMapCoordinates(self, layer:
QgsMapLayer
, point:QgsPointXY
) -> QgsPointXY transformation from layer’s coordinates to map coordinates (which is different in case reprojection is used)
-
toMapCoordinatesV2
(self, layer: QgsMapLayer, point: QgsPoint) → QgsPoint¶ transformation from layer’s coordinates to map coordinates (which is different in case reprojection is used)
Note
available in Python bindings as toMapCoordinatesV2