QgsMapOverviewCanvas Class Reference

A widget that displays an overview map. More...

#include <qgsmapoverviewcanvas.h>

Collaboration diagram for QgsMapOverviewCanvas:

List of all members.

Public Slots
void	destinationSrsChanged ()
void	hasCrsTransformEnabled (bool flag)
Public Member Functions
	QgsMapOverviewCanvas (QWidget *parent=0, QgsMapCanvas *mapCanvas=NULL)
	~QgsMapOverviewCanvas ()
void	drawExtentRect ()
	used for overview canvas to reflect changed extent in main map canvas
void	enableAntiAliasing (bool flag)
QStringList &	layerSet ()
void	refresh ()
	renders overview and updates panning widget
void	setBackgroundColor (const QColor &color)
	changes background color
void	setLayerSet (const QStringList &layerSet)
	updates layer set for overview
void	updateFullExtent ()
Protected Member Functions
void	mouseMoveEvent (QMouseEvent *e)
	Overridden mouse move event.
void	mousePressEvent (QMouseEvent *e)
	Overridden mouse press event.
void	mouseReleaseEvent (QMouseEvent *e)
	Overridden mouse release event.
void	paintEvent (QPaintEvent *pe)
	Overridden paint event.
void	resizeEvent (QResizeEvent *e)
	Overridden resize event.
void	updatePanningWidget (const QPoint &pos)
	called when panning to reflect mouse movement
Protected Attributes
bool	mAntiAliasing
	indicates whether antialiasing will be used for rendering
QColor	mBgColor
	background color
QgsMapCanvas *	mMapCanvas
	main map canvas - used to get/set extent
QgsMapRenderer *	mMapRenderer
	for rendering overview
QSize	mNewSize
	resized canvas size
QPoint	mPanningCursorOffset
	position of cursor inside panning widget
QgsPanningWidget *	mPanningWidget
	widget for panning map in overview
QPixmap	mPixmap
	pixmap where the map is stored

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Detailed Description

A widget that displays an overview map.

Definition at line 37 of file qgsmapoverviewcanvas.h.

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Constructor & Destructor Documentation

QgsMapOverviewCanvas::QgsMapOverviewCanvas	(	QWidget *	parent = 0,
		QgsMapCanvas *	mapCanvas = NULL
	)

Definition at line 70 of file qgsmapoverviewcanvas.cpp.

References QgsMapRenderer::enableOverviewMode(), mMapRenderer, mPanningWidget, and setBackgroundColor().

QgsMapOverviewCanvas::~QgsMapOverviewCanvas

(

)

Definition at line 82 of file qgsmapoverviewcanvas.cpp.

References mMapRenderer.

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Member Function Documentation

void QgsMapOverviewCanvas::destinationSrsChanged

(

)

[slot]

Definition at line 322 of file qgsmapoverviewcanvas.cpp.

References QgsMapRenderer::destinationCrs(), QgsMapCanvas::mapRenderer(), mMapCanvas, mMapRenderer, and QgsMapRenderer::setDestinationCrs().

void QgsMapOverviewCanvas::drawExtentRect

(

)

used for overview canvas to reflect changed extent in main map canvas

Definition at line 108 of file qgsmapoverviewcanvas.cpp.

References QgsMapRenderer::coordinateTransform(), QgsMapCanvas::extent(), QgsMapRenderer::extent(), QgsRectangle::isEmpty(), mMapCanvas, mMapRenderer, mPanningWidget, QgsDebugMsg, QgsMapToPixel::transform(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

Referenced by refresh(), QgsMapCanvas::setExtent(), updateFullExtent(), QgsMapCanvas::zoomToNextExtent(), and QgsMapCanvas::zoomToPreviousExtent().

void QgsMapOverviewCanvas::enableAntiAliasing

(

bool

flag

)

[inline]

Definition at line 60 of file qgsmapoverviewcanvas.h.

Referenced by QgsMapCanvas::enableAntiAliasing().

void QgsMapOverviewCanvas::hasCrsTransformEnabled

(

bool

flag

)

[slot]

Definition at line 317 of file qgsmapoverviewcanvas.cpp.

References mMapRenderer, and QgsMapRenderer::setProjectionsEnabled().

QStringList & QgsMapOverviewCanvas::layerSet

(

)

Definition at line 328 of file qgsmapoverviewcanvas.cpp.

References QgsMapRenderer::layerSet(), and mMapRenderer.

Referenced by QgsMapCanvas::setLayerSet().

void QgsMapOverviewCanvas::mouseMoveEvent

(

QMouseEvent *

e

)

[protected]

Overridden mouse move event.

Definition at line 239 of file qgsmapoverviewcanvas.cpp.

References updatePanningWidget().

void QgsMapOverviewCanvas::mousePressEvent

(

QMouseEvent *

e

)

[protected]

Overridden mouse press event.

Definition at line 191 of file qgsmapoverviewcanvas.cpp.

References mPanningCursorOffset, mPanningWidget, and updatePanningWidget().

void QgsMapOverviewCanvas::mouseReleaseEvent

(

QMouseEvent *

e

)

[protected]

Overridden mouse release event.

Definition at line 212 of file qgsmapoverviewcanvas.cpp.

References QgsMapRenderer::coordinateTransform(), QgsMapCanvas::extent(), QgsRectangle::height(), mMapCanvas, mMapRenderer, mPanningWidget, QgsDebugMsg, QgsMapCanvas::refresh(), QgsMapCanvas::setExtent(), QgsRectangle::setXMaximum(), QgsRectangle::setXMinimum(), QgsRectangle::setYMaximum(), QgsRectangle::setYMinimum(), QgsMapToPixel::toMapCoordinates(), QgsRectangle::width(), QgsPoint::x(), and QgsPoint::y().

void QgsMapOverviewCanvas::paintEvent

(

QPaintEvent *

pe

)

[protected]

Overridden paint event.

Definition at line 92 of file qgsmapoverviewcanvas.cpp.

References mMapRenderer, mNewSize, mPixmap, refresh(), QgsMapRenderer::setOutputSize(), and updateFullExtent().

void QgsMapOverviewCanvas::refresh

(

)

renders overview and updates panning widget

Definition at line 257 of file qgsmapoverviewcanvas.cpp.

References drawExtentRect(), mAntiAliasing, mBgColor, mMapRenderer, mPixmap, and QgsMapRenderer::render().

Referenced by paintEvent(), and QgsMapCanvas::updateOverview().

void QgsMapOverviewCanvas::resizeEvent

(

QResizeEvent *

e

)

[protected]

Overridden resize event.

Definition at line 87 of file qgsmapoverviewcanvas.cpp.

References mNewSize.

void QgsMapOverviewCanvas::setBackgroundColor

(

const QColor &

color

)

changes background color

Definition at line 284 of file qgsmapoverviewcanvas.cpp.

References mBgColor.

Referenced by QgsMapOverviewCanvas().

void QgsMapOverviewCanvas::setLayerSet

(

const QStringList &

layerSet

)

updates layer set for overview

Definition at line 294 of file qgsmapoverviewcanvas.cpp.

References mMapRenderer, QgsDebugMsg, QgsMapRenderer::setLayerSet(), updateFullExtent(), and QgsMapRenderer::updateFullExtent().

Referenced by QgsMapCanvas::setLayerSet().

void QgsMapOverviewCanvas::updateFullExtent

(

)

Definition at line 303 of file qgsmapoverviewcanvas.cpp.

References drawExtentRect(), QgsMapRenderer::fullExtent(), QgsMapRenderer::layerSet(), mMapRenderer, QgsRectangle::scale(), and QgsMapRenderer::setExtent().

Referenced by paintEvent(), and setLayerSet().

void QgsMapOverviewCanvas::updatePanningWidget

(

const QPoint &

pos

)

[protected]

called when panning to reflect mouse movement

Definition at line 249 of file qgsmapoverviewcanvas.cpp.

References mPanningCursorOffset, and mPanningWidget.

Referenced by mouseMoveEvent(), and mousePressEvent().

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Member Data Documentation

bool QgsMapOverviewCanvas::mAntiAliasing [protected]

indicates whether antialiasing will be used for rendering

Definition at line 109 of file qgsmapoverviewcanvas.h.

Referenced by refresh().

QColor QgsMapOverviewCanvas::mBgColor [protected]

background color

Definition at line 106 of file qgsmapoverviewcanvas.h.

Referenced by refresh(), and setBackgroundColor().

QgsMapCanvas* QgsMapOverviewCanvas::mMapCanvas [protected]

main map canvas - used to get/set extent

Definition at line 97 of file qgsmapoverviewcanvas.h.

Referenced by destinationSrsChanged(), drawExtentRect(), and mouseReleaseEvent().

QgsMapRenderer* QgsMapOverviewCanvas::mMapRenderer [protected]

for rendering overview

Definition at line 100 of file qgsmapoverviewcanvas.h.

Referenced by destinationSrsChanged(), drawExtentRect(), hasCrsTransformEnabled(), layerSet(), mouseReleaseEvent(), paintEvent(), QgsMapOverviewCanvas(), refresh(), setLayerSet(), updateFullExtent(), and ~QgsMapOverviewCanvas().

QSize QgsMapOverviewCanvas::mNewSize [protected]

resized canvas size

Definition at line 112 of file qgsmapoverviewcanvas.h.

Referenced by paintEvent(), and resizeEvent().

QPoint QgsMapOverviewCanvas::mPanningCursorOffset [protected]

position of cursor inside panning widget

Definition at line 94 of file qgsmapoverviewcanvas.h.

Referenced by mousePressEvent(), and updatePanningWidget().

QgsPanningWidget* QgsMapOverviewCanvas::mPanningWidget [protected]

widget for panning map in overview

Definition at line 91 of file qgsmapoverviewcanvas.h.

Referenced by drawExtentRect(), mousePressEvent(), mouseReleaseEvent(), QgsMapOverviewCanvas(), and updatePanningWidget().

QPixmap QgsMapOverviewCanvas::mPixmap [protected]

pixmap where the map is stored

Definition at line 103 of file qgsmapoverviewcanvas.h.

Referenced by paintEvent(), and refresh().

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

• src/gui/qgsmapoverviewcanvas.h
• src/gui/qgsmapoverviewcanvas.cpp