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 void	deactivate ()
	called when map tool is being deactivated
virtual bool	isTransient ()
	Check whether this MapTool performs a zoom or pan operation.
Protected Attributes
bool	mDragging
	Flag to indicate a map canvas drag operation is taking place.
QgsRubberBand *	mRubberBand
bool	mZoomOut
	indicates whether we're zooming in or out
QRect	mZoomRect
	stores actual zoom rect

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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, QGis::Polygon, 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(), QgsMapCanvas::extent(), QgsMapCanvas::getCoordinateTransform(), QgsRectangle::height(), QgsMapTool::mCanvas, mDragging, mRubberBand, mZoomOut, mZoomRect, QgsRectangle::normalize(), QgsDebugMsg, QgsMapCanvas::refresh(), QgsRectangle::scale(), 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 149 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