QgsMapToolPan Class Reference

A map tool for panning the map. More...

#include <qgsmaptoolpan.h>

Inheritance diagram for QgsMapToolPan:

Collaboration diagram for QgsMapToolPan:

Public Member Functions
	QgsMapToolPan (QgsMapCanvas *canvas)
	constructor
virtual void	canvasMoveEvent (QMouseEvent *e)
	Overridden mouse move event.
virtual void	canvasReleaseEvent (QMouseEvent *e)
	Overridden mouse release event.
virtual bool	isTransient ()
	Check whether this MapTool performs a zoom or pan operation.
Public Member Functions inherited from QgsMapTool
virtual	~QgsMapTool ()
	virtual destructor
virtual void	canvasDoubleClickEvent (QMouseEvent *e)
	Mouse double click event for overriding. Default implementation does nothing.
virtual void	canvasPressEvent (QMouseEvent *e)
	Mouse press event for overriding. Default implementation does nothing.
virtual void	wheelEvent (QWheelEvent *e)
	Mouse wheel event for overriding.
virtual void	keyPressEvent (QKeyEvent *e)
	Key event for overriding. Default implementation does nothing.
virtual void	keyReleaseEvent (QKeyEvent *e)
	Key event for overriding.
virtual void	renderComplete ()
	Called when rendering has finished. Default implementation does nothing.
void	setAction (QAction *action)
	Use this to associate a QAction to this maptool.
QAction *	action ()
	Return associated action with map tool or NULL if no action is associated.
void	setButton (QAbstractButton *button)
	Use this to associate a button to this maptool.
QAbstractButton *	button ()
	Return associated button with map tool or NULL if no button is associated.
virtual void	setCursor (QCursor cursor)
	Set a user defined cursor.
virtual bool	isEditTool ()
	Check whether this MapTool performs an edit operation.
virtual void	activate ()
	called when set as currently active map tool
virtual void	deactivate ()
	called when map tool is being deactivated
QgsMapCanvas *	canvas ()
	returns pointer to the tool's map canvas

Private Attributes
bool	mDragging
	Flag to indicate a map canvas drag operation is taking place.

Additional Inherited Members
Protected Member Functions inherited from QgsMapTool
	QgsMapTool (QgsMapCanvas *canvas)
	constructor takes map canvas as a parameter
QgsPoint	toMapCoordinates (const QPoint &point)
	transformation from screen coordinates to map coordinates
QgsPoint	toLayerCoordinates (QgsMapLayer *layer, const QPoint &point)
	transformation from screen coordinates to layer's coordinates
QgsPoint	toLayerCoordinates (QgsMapLayer *layer, const QgsPoint &point)
	transformation from map coordinates to layer's coordinates
QgsPoint	toMapCoordinates (QgsMapLayer *layer, const QgsPoint &point)
	transformation from layer's coordinates to map coordinates (which is different in case reprojection is used)
QgsRectangle	toLayerCoordinates (QgsMapLayer *layer, const QgsRectangle &rect)
	trnasformation of the rect from map coordinates to layer's coordinates
QPoint	toCanvasCoordinates (const QgsPoint &point)
	transformation from map coordinates to screen coordinates
Protected Attributes inherited from QgsMapTool
QgsMapCanvas *	mCanvas
	pointer to map canvas
QCursor	mCursor
	cursor used in map tool
QAction *	mAction
	optionally map tool can have pointer to action which will be used to set that action as active
QAbstractButton *	mButton
	optionally map tool can have pointer to a button which will be used to set that action as active

Detailed Description

A map tool for panning the map.

See Also

QgsMapTool

Definition at line 27 of file qgsmaptoolpan.h.

Constructor & Destructor Documentation

QgsMapToolPan::QgsMapToolPan

(

QgsMapCanvas *

canvas

)

constructor

Definition at line 25 of file qgsmaptoolpan.cpp.

References QgsMapTool::mCursor, pan_bits, and pan_mask_bits.

Member Function Documentation

void QgsMapToolPan::canvasMoveEvent ( QMouseEvent *  e )

virtual

Overridden mouse move event.

Reimplemented from QgsMapTool.

Definition at line 35 of file qgsmaptoolpan.cpp.

References QgsMapTool::mCanvas, mDragging, and QgsMapCanvas::panAction().

void QgsMapToolPan::canvasReleaseEvent ( QMouseEvent *  e )

virtual

Overridden mouse release event.

Reimplemented from QgsMapTool.

Definition at line 45 of file qgsmaptoolpan.cpp.

References QgsMapCanvas::getCoordinateTransform(), QgsMapTool::mCanvas, mDragging, QgsMapCanvas::panActionEnd(), QgsMapCanvas::refresh(), QgsMapCanvas::setExtent(), and QgsMapToPixel::toMapPoint().

virtual bool QgsMapToolPan::isTransient ( )

inlinevirtual

Check whether this MapTool performs a zoom or pan operation.

If it does, we will be able to perform the zoom and then resume operations with the original / previously used tool.

Reimplemented from QgsMapTool.

Definition at line 39 of file qgsmaptoolpan.h.

Member Data Documentation

bool QgsMapToolPan::mDragging

private

Flag to indicate a map canvas drag operation is taking place.

Definition at line 44 of file qgsmaptoolpan.h.

Referenced by canvasMoveEvent(), and canvasReleaseEvent().

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The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.2.0+wheezy1/src/gui/qgsmaptoolpan.h
• /tmp/buildd/qgis-2.2.0+wheezy1/src/gui/qgsmaptoolpan.cpp