QgsMapToolZoom Class Reference

A map tool for zooming into the map. More...

#include <qgsmaptoolzoom.h>

Inheritance diagram for QgsMapToolZoom:

Collaboration diagram for QgsMapToolZoom:

List of all members.

Public Member Functions
	QgsMapToolZoom (QgsMapCanvas *canvas, bool zoomOut)
	constructor
	~QgsMapToolZoom ()
virtual void	canvasMoveEvent (QMouseEvent *e)
	Overridden mouse move event.
virtual void	canvasPressEvent (QMouseEvent *e)
	Overridden mouse press event.
virtual void	canvasReleaseEvent (QMouseEvent *e)
	Overridden mouse release event.
virtual bool	isTransient ()
	Check whether this MapTool performs a zoom or pan operation.
virtual void	deactivate ()
	called when map tool is being deactivated
Protected Attributes
QRect	mZoomRect
	stores actual zoom rect
bool	mZoomOut
	indicates whether we're zooming in or out
bool	mDragging
	Flag to indicate a map canvas drag operation is taking place.
QgsRubberBand *	mRubberBand

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Detailed Description

A map tool for zooming into the map.

See also:

QgsMapTool

Definition at line 28 of file qgsmaptoolzoom.h.

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Constructor & Destructor Documentation

QgsMapToolZoom::QgsMapToolZoom	(	QgsMapCanvas *	canvas,
		bool	zoomOut
	)

constructor

Definition at line 29 of file qgsmaptoolzoom.cpp.

References QgsMapTool::mCursor, zoom_in, and zoom_out.

QgsMapToolZoom::~QgsMapToolZoom

(

)

Definition at line 37 of file qgsmaptoolzoom.cpp.

References mRubberBand.

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Member Function Documentation

void QgsMapToolZoom::canvasMoveEvent

(

QMouseEvent *

e

)

[virtual]

Overridden mouse move event.

Reimplemented from QgsMapTool.

Definition at line 43 of file qgsmaptoolzoom.cpp.

References QgsMapTool::mCanvas, mDragging, mRubberBand, mZoomRect, and QgsRubberBand::setToCanvasRectangle().

void QgsMapToolZoom::canvasPressEvent

(

QMouseEvent *

e

)

[virtual]

Overridden mouse press event.

Reimplemented from QgsMapTool.

Definition at line 64 of file qgsmaptoolzoom.cpp.

References mZoomRect.

void QgsMapToolZoom::canvasReleaseEvent

(

QMouseEvent *

e

)

[virtual]

Overridden mouse release event.

Reimplemented from QgsMapTool.

Definition at line 73 of file qgsmaptoolzoom.cpp.

References QgsRectangle::center(), QgsRectangle::expand(), QgsMapCanvas::extent(), QgsMapCanvas::getCoordinateTransform(), QgsRectangle::height(), QgsMapTool::mCanvas, mDragging, mRubberBand, mZoomOut, mZoomRect, QgsRectangle::normalize(), QgsDebugMsg, QgsMapCanvas::refresh(), QgsMapCanvas::setExtent(), QgsRectangle::setXMaximum(), QgsRectangle::setXMinimum(), QgsRectangle::setYMaximum(), QgsRectangle::setYMinimum(), QgsMapToPixel::toMapCoordinates(), QgsRectangle::toString(), QgsPoint::toString(), QgsRectangle::width(), QgsPoint::x(), QgsPoint::y(), and QgsMapCanvas::zoomWithCenter().

void QgsMapToolZoom::deactivate

(

)

[virtual]

called when map tool is being deactivated

Reimplemented from QgsMapTool.

Definition at line 148 of file qgsmaptoolzoom.cpp.

References mRubberBand.

virtual bool QgsMapToolZoom::isTransient

(

)

[inline, virtual]

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 45 of file qgsmaptoolzoom.h.

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Member Data Documentation

bool QgsMapToolZoom::mDragging [protected]

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

Definition at line 57 of file qgsmaptoolzoom.h.

Referenced by canvasMoveEvent(), and canvasReleaseEvent().

QgsRubberBand* QgsMapToolZoom::mRubberBand [protected]

Definition at line 59 of file qgsmaptoolzoom.h.

Referenced by canvasMoveEvent(), canvasReleaseEvent(), deactivate(), and ~QgsMapToolZoom().

bool QgsMapToolZoom::mZoomOut [protected]

indicates whether we're zooming in or out

Definition at line 54 of file qgsmaptoolzoom.h.

Referenced by canvasReleaseEvent().

QRect QgsMapToolZoom::mZoomRect [protected]

stores actual zoom rect

Definition at line 51 of file qgsmaptoolzoom.h.

Referenced by canvasMoveEvent(), canvasPressEvent(), and canvasReleaseEvent().

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

• src/gui/qgsmaptoolzoom.h
• src/gui/qgsmaptoolzoom.cpp