QgsMapOverviewCanvas Class Reference

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

#include <qgsmapoverviewcanvas.h>

Inheritance diagram for QgsMapOverviewCanvas:

Collaboration diagram for QgsMapOverviewCanvas:

Public Slots
void	drawExtentRect ()
	used for overview canvas to reflect changed extent in main map canvas More...
void	hasCrsTransformEnabled (bool flag)
void	destinationSrsChanged ()

Public Member Functions
	QgsMapOverviewCanvas (QWidget *parent=0, QgsMapCanvas *mapCanvas=NULL)
	~QgsMapOverviewCanvas ()
void	refresh ()
	renders overview and updates panning widget More...
void	setBackgroundColor (const QColor &color)
	changes background color More...
void	setLayerSet (const QStringList &layerSet)
	updates layer set for overview More...
QStringList	layerSet () const
void	enableAntiAliasing (bool flag)
void	updateFullExtent ()

Protected Slots
void	mapRenderingFinished ()

Protected Member Functions
void	paintEvent (QPaintEvent *pe)
	Overridden paint event. More...
void	resizeEvent (QResizeEvent *e)
	Overridden resize event. More...
void	mouseMoveEvent (QMouseEvent *e)
	Overridden mouse move event. More...
void	mousePressEvent (QMouseEvent *e)
	Overridden mouse press event. More...
void	mouseReleaseEvent (QMouseEvent *e)
	Overridden mouse release event. More...
void	updatePanningWidget (const QPoint &pos)
	called when panning to reflect mouse movement More...

Protected Attributes
QgsPanningWidget *	mPanningWidget
	widget for panning map in overview More...
QPoint	mPanningCursorOffset
	position of cursor inside panning widget More...
QgsMapCanvas *	mMapCanvas
	main map canvas - used to get/set extent More...
QPixmap	mPixmap
	pixmap where the map is stored More...
QgsMapSettings	mSettings
	map settings used for rendering of the overview map More...
QgsMapRendererQImageJob *	mJob
	for rendering overview More...

Detailed Description

A widget that displays an overview map.

Definition at line 39 of file qgsmapoverviewcanvas.h.

Constructor & Destructor Documentation

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

Definition at line 70 of file qgsmapoverviewcanvas.cpp.

References drawExtentRect(), QgsMapSettings::DrawLabeling, mMapCanvas, mPanningWidget, mSettings, setBackgroundColor(), and QgsMapSettings::setFlag().

QgsMapOverviewCanvas::~QgsMapOverviewCanvas

(

)

Definition at line 85 of file qgsmapoverviewcanvas.cpp.

Member Function Documentation

void QgsMapOverviewCanvas::destinationSrsChanged ( )

slot

Definition at line 341 of file qgsmapoverviewcanvas.cpp.

References QgsMapSettings::destinationCrs(), QgsMapCanvas::mapSettings(), mMapCanvas, mSettings, and QgsMapSettings::setDestinationCrs().

void QgsMapOverviewCanvas::drawExtentRect ( )

slot

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

Definition at line 112 of file qgsmapoverviewcanvas.cpp.

References QgsMapCanvas::extent(), QgsRectangle::isEmpty(), QgsMapSettings::mapToPixel(), mMapCanvas, mPanningWidget, mSettings, QgsDebugMsg, QgsMapToPixel::transform(), QgsMapSettings::visibleExtent(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

Referenced by QgsMapOverviewCanvas(), refresh(), and updateFullExtent().

void QgsMapOverviewCanvas::enableAntiAliasing ( bool  flag )

inline

Definition at line 59 of file qgsmapoverviewcanvas.h.

References QgsMapSettings::Antialiasing.

Referenced by QgsMapCanvas::enableAntiAliasing().

void QgsMapOverviewCanvas::hasCrsTransformEnabled ( bool  flag )

slot

Definition at line 336 of file qgsmapoverviewcanvas.cpp.

References mSettings, and QgsMapSettings::setCrsTransformEnabled().

QStringList QgsMapOverviewCanvas::layerSet

(

)

const

Definition at line 346 of file qgsmapoverviewcanvas.cpp.

References QgsMapSettings::layers(), and mSettings.

Referenced by QgsMapCanvas::setLayerSet().

void QgsMapOverviewCanvas::mapRenderingFinished ( )

protectedslot

Definition at line 291 of file qgsmapoverviewcanvas.cpp.

References mJob, mPixmap, QgsDebugMsg, and QgsMapRendererQImageJob::renderedImage().

Referenced by refresh().

void QgsMapOverviewCanvas::mouseMoveEvent ( QMouseEvent *  e )

protected

Overridden mouse move event.

Definition at line 241 of file qgsmapoverviewcanvas.cpp.

References updatePanningWidget().

void QgsMapOverviewCanvas::mousePressEvent ( QMouseEvent *  e )

protected

Overridden mouse press event.

Definition at line 193 of file qgsmapoverviewcanvas.cpp.

References mPanningCursorOffset, mPanningWidget, and updatePanningWidget().

void QgsMapOverviewCanvas::mouseReleaseEvent ( QMouseEvent *  e )

protected

Overridden mouse release event.

Definition at line 214 of file qgsmapoverviewcanvas.cpp.

References QgsMapCanvas::extent(), QgsRectangle::height(), QgsMapSettings::mapToPixel(), mMapCanvas, mPanningWidget, mSettings, 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 102 of file qgsmapoverviewcanvas.cpp.

References mPixmap.

void QgsMapOverviewCanvas::refresh

(

)

renders overview and updates panning widget

Definition at line 258 of file qgsmapoverviewcanvas.cpp.

References QgsMapRendererJob::cancel(), drawExtentRect(), QgsMapSettings::hasValidSettings(), mapRenderingFinished(), mJob, mPixmap, mSettings, QgsDebugMsg, QgsMapRendererJob::start(), and updateFullExtent().

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

void QgsMapOverviewCanvas::resizeEvent ( QResizeEvent *  e )

protected

Overridden resize event.

Definition at line 89 of file qgsmapoverviewcanvas.cpp.

References mPixmap, mSettings, refresh(), QgsMapSettings::setOutputSize(), and updateFullExtent().

void QgsMapOverviewCanvas::setBackgroundColor

(

const QColor &

color

)

changes background color

Definition at line 304 of file qgsmapoverviewcanvas.cpp.

References mSettings, and QgsMapSettings::setBackgroundColor().

Referenced by QgsMapOverviewCanvas().

void QgsMapOverviewCanvas::setLayerSet

(

const QStringList &

layerSet

)

updates layer set for overview

Definition at line 314 of file qgsmapoverviewcanvas.cpp.

References mSettings, QgsDebugMsg, QgsMapSettings::setLayers(), and updateFullExtent().

Referenced by QgsMapCanvas::setLayerSet().

void QgsMapOverviewCanvas::updateFullExtent

(

)

Definition at line 321 of file qgsmapoverviewcanvas.cpp.

References drawExtentRect(), QgsMapCanvas::fullExtent(), QgsMapSettings::fullExtent(), QgsMapSettings::hasValidSettings(), mMapCanvas, mSettings, QgsRectangle::scale(), and QgsMapSettings::setExtent().

Referenced by refresh(), resizeEvent(), and setLayerSet().

void QgsMapOverviewCanvas::updatePanningWidget ( const QPoint &  pos )

protected

called when panning to reflect mouse movement

Definition at line 251 of file qgsmapoverviewcanvas.cpp.

References mPanningCursorOffset, and mPanningWidget.

Referenced by mouseMoveEvent(), and mousePressEvent().

Member Data Documentation

QgsMapRendererQImageJob* QgsMapOverviewCanvas::mJob

protected

for rendering overview

Definition at line 114 of file qgsmapoverviewcanvas.h.

Referenced by mapRenderingFinished(), and refresh().

QgsMapCanvas* QgsMapOverviewCanvas::mMapCanvas

protected

main map canvas - used to get/set extent

Definition at line 105 of file qgsmapoverviewcanvas.h.

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

QPoint QgsMapOverviewCanvas::mPanningCursorOffset

protected

position of cursor inside panning widget

Definition at line 102 of file qgsmapoverviewcanvas.h.

Referenced by mousePressEvent(), and updatePanningWidget().

QgsPanningWidget* QgsMapOverviewCanvas::mPanningWidget

protected

widget for panning map in overview

Definition at line 99 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 108 of file qgsmapoverviewcanvas.h.

Referenced by mapRenderingFinished(), paintEvent(), refresh(), and resizeEvent().

QgsMapSettings QgsMapOverviewCanvas::mSettings

protected

map settings used for rendering of the overview map

Definition at line 111 of file qgsmapoverviewcanvas.h.

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

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

• /tmp/buildd/qgis-2.4.0/src/gui/qgsmapoverviewcanvas.h
• /tmp/buildd/qgis-2.4.0/src/gui/qgsmapoverviewcanvas.cpp