QgsHighlight Class Reference

A class for highlight features on the map. More...

#include <qgshighlight.h>

Inheritance diagram for QgsHighlight:

Collaboration diagram for QgsHighlight:

Public Member Functions
	QgsHighlight (QgsMapCanvas *mapCanvas, QgsGeometry *geom, QgsMapLayer *layer)
	QgsHighlight (QgsMapCanvas *mapCanvas, QgsGeometry *geom, QgsVectorLayer *layer)
	QgsHighlight (QgsMapCanvas *mapCanvas, const QgsFeature &feature, QgsVectorLayer *layer)
	Constructor for highlighting true feature shape using feature attributes and renderer.
	~QgsHighlight ()
void	setColor (const QColor &color)
void	setWidth (int width)
	Set width.
Public Member Functions inherited from QgsMapCanvasItem
virtual void	updatePosition ()
	called on changed extent or resize event to update position of the item
virtual QRectF	boundingRect () const
	default implementation for canvas items
void	setPanningOffset (const QPoint &point)
	sets current offset, to be called from QgsMapCanvas
QgsRectangle	rect () const
	returns canvas item rectangle
void	setRect (const QgsRectangle &r)
	sets canvas item rectangle
QgsPoint	toMapCoordinates (const QPoint &point)
	transformation from screen coordinates to map coordinates
QPointF	toCanvasCoordinates (const QgsPoint &point)
	transformation from map coordinates to screen coordinates

Protected Member Functions
virtual void	paint (QPainter *p)
void	updateRect ()
	recalculates needed rectangle
Protected Member Functions inherited from QgsMapCanvasItem
	QgsMapCanvasItem (QgsMapCanvas *mapCanvas)
	protected constructor: cannot be constructed directly
virtual	~QgsMapCanvasItem ()
virtual void	paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=0)
	paint function called by map canvas
void	updateCanvas ()
	schedules map canvas for repaint
bool	setRenderContextVariables (QPainter *p, QgsRenderContext &context) const
	Sets render context parameters.

Private Member Functions
void	init ()
void	setSymbolColor (QgsSymbolV2 *symbol, const QColor &color)
void	paintPoint (QPainter *p, QgsPoint point)
void	paintLine (QPainter *p, QgsPolyline line)
void	paintPolygon (QPainter *p, QgsPolygon polygon)
QgsVectorLayer *	vectorLayer ()
	QgsHighlight ()

Private Attributes
QBrush	mBrush
QPen	mPen
QgsGeometry *	mGeometry
QgsMapLayer *	mLayer
QgsFeature	mFeature
QgsFeatureRendererV2 *	mRenderer
QColor	mTemporaryFillColor

Additional Inherited Members
Protected Attributes inherited from QgsMapCanvasItem
QgsMapCanvas *	mMapCanvas
	pointer to map canvas
QgsRectangle	mRect
	canvas item rectangle (in map coordinates)
QPoint	mPanningOffset
	offset from normal position due current panning operation, used when converting map coordinates to move map canvas items
QSizeF	mItemSize
	cached size of the item (to return in boundingRect())

Detailed Description

A class for highlight features on the map.

The QgsHighlight class provides a transparent overlay widget for highlightng features on the map.

Definition at line 35 of file qgshighlight.h.

Constructor & Destructor Documentation

QgsHighlight::QgsHighlight	(	QgsMapCanvas *	mapCanvas,
		QgsGeometry *	geom,
		QgsMapLayer *	layer
	)

Definition at line 39 of file qgshighlight.cpp.

References init(), and mGeometry.

QgsHighlight::QgsHighlight	(	QgsMapCanvas *	mapCanvas,
		QgsGeometry *	geom,
		QgsVectorLayer *	layer
	)

Definition at line 48 of file qgshighlight.cpp.

References init(), and mGeometry.

QgsHighlight::QgsHighlight	(	QgsMapCanvas *	mapCanvas,
		const QgsFeature &	feature,
		QgsVectorLayer *	layer
	)

Constructor for highlighting true feature shape using feature attributes and renderer.

Parameters

mapCanvas	map canvas
feature
layer	vector layer

Definition at line 57 of file qgshighlight.cpp.

References init().

QgsHighlight::~QgsHighlight

(

)

Definition at line 89 of file qgshighlight.cpp.

References mGeometry, and mRenderer.

QgsHighlight::QgsHighlight ( )

private

Member Function Documentation

void QgsHighlight::init ( )

private

Definition at line 67 of file qgshighlight.cpp.

References QgsFeature::geometry(), QgsMapRenderer::hasCrsTransformEnabled(), QgsMapCanvas::mapRenderer(), mFeature, mGeometry, mLayer, QgsMapCanvasItem::mMapCanvas, setColor(), QgsGeometry::transform(), QgsMapRenderer::transformation(), and updateRect().

Referenced by QgsHighlight().

void QgsHighlight::paint ( QPainter *  p )

protectedvirtual

Draw the shape in response to an update event.

Implements QgsMapCanvasItem.

Definition at line 232 of file qgshighlight.cpp.

References QgsGeometry::asMultiPoint(), QgsGeometry::asMultiPolygon(), QgsGeometry::asMultiPolyline(), QgsGeometry::asPoint(), QgsGeometry::asPolygon(), QgsGeometry::asPolyline(), QgsMapCanvas::extent(), QgsFeature::geometry(), QgsMapCanvas::mapRenderer(), QgsMapCanvas::mapUnitsPerPixel(), mBrush, mFeature, mGeometry, QgsMapCanvasItem::mMapCanvas, mPen, mRenderer, mTemporaryFillColor, paintLine(), paintPoint(), paintPolygon(), QgsMapCanvasItem::rect(), QgsMapRenderer::rendererContext(), QgsFeatureRendererV2::renderFeature(), QgsRenderContext::setCoordinateTransform(), QgsRenderContext::setExtent(), QgsRenderContext::setMapToPixel(), QgsRenderContext::setPainter(), QgsFeatureRendererV2::startRender(), QgsFeatureRendererV2::stopRender(), QgsMapCanvasItem::toCanvasCoordinates(), updateRect(), vectorLayer(), QGis::WKBLineString, QGis::WKBLineString25D, QGis::WKBMultiLineString, QGis::WKBMultiLineString25D, QGis::WKBMultiPoint, QGis::WKBMultiPoint25D, QGis::WKBMultiPolygon, QGis::WKBMultiPolygon25D, QGis::WKBPoint, QGis::WKBPoint25D, QGis::WKBPolygon, QGis::WKBPolygon25D, QgsGeometry::wkbType(), QGis::WKBUnknown, QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

void QgsHighlight::paintLine ( QPainter *  p, QgsPolyline  line  )

private

Definition at line 184 of file qgshighlight.cpp.

References QgsMapCanvasItem::toCanvasCoordinates().

Referenced by paint().

void QgsHighlight::paintPoint ( QPainter *  p, QgsPoint  point  )

private

Definition at line 170 of file qgshighlight.cpp.

References QgsMapCanvas::extent(), QgsMapCanvasItem::mMapCanvas, QgsMapCanvasItem::toCanvasCoordinates(), and QgsRectangle::width().

Referenced by paint().

void QgsHighlight::paintPolygon ( QPainter *  p, QgsPolygon  polygon  )

private

Definition at line 196 of file qgshighlight.cpp.

References mBrush, mPen, size, and QgsMapCanvasItem::toCanvasCoordinates().

Referenced by paint().

void QgsHighlight::setColor

(

const QColor &

color

)

Set the outline and fill color.

Definition at line 98 of file qgshighlight.cpp.

References QgsFeatureRendererV2::clone(), mBrush, mPen, mRenderer, QgsVectorLayer::rendererV2(), setSymbolColor(), QgsFeatureRendererV2::symbols(), and vectorLayer().

Referenced by QgsMapToolIdentify::handleMenuHover(), and init().

void QgsHighlight::setSymbolColor ( QgsSymbolV2 *  symbol, const QColor &  color  )

private

Definition at line 122 of file qgshighlight.cpp.

References mTemporaryFillColor, QgsSymbolLayerV2::removeDataDefinedProperty(), QgsSymbolLayerV2::setColor(), QgsSymbolLayerV2::setFillColor(), QgsSymbolLayerV2::setOutlineColor(), QgsSymbolLayerV2::subSymbol(), QgsSymbolV2::symbolLayer(), and QgsSymbolV2::symbolLayerCount().

Referenced by setColor().

void QgsHighlight::setWidth

(

int

width

)

Set width.

Ignored in feature mode.

Set the outline width.

Definition at line 165 of file qgshighlight.cpp.

References mPen.

Referenced by QgsMapToolIdentify::handleMenuHover().

void QgsHighlight::updateRect ( )

protected

recalculates needed rectangle

Definition at line 369 of file qgshighlight.cpp.

References QgsGeometry::boundingBox(), QgsMapCanvas::extent(), QgsFeature::geometry(), QgsRectangle::isEmpty(), mFeature, mGeometry, QgsMapCanvasItem::mMapCanvas, QgsMapCanvasItem::setRect(), QgsRectangle::setXMaximum(), QgsRectangle::setXMinimum(), QgsRectangle::setYMaximum(), QgsRectangle::setYMinimum(), QgsRectangle::width(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

Referenced by init(), and paint().

QgsVectorLayer * QgsHighlight::vectorLayer ( )

private

Definition at line 402 of file qgshighlight.cpp.

References mLayer.

Referenced by paint(), and setColor().

Member Data Documentation

QBrush QgsHighlight::mBrush

private

Definition at line 71 of file qgshighlight.h.

Referenced by paint(), paintPolygon(), and setColor().

QgsFeature QgsHighlight::mFeature

private

Definition at line 75 of file qgshighlight.h.

Referenced by init(), paint(), and updateRect().

QgsGeometry* QgsHighlight::mGeometry

private

Definition at line 73 of file qgshighlight.h.

Referenced by init(), paint(), QgsHighlight(), updateRect(), and ~QgsHighlight().

QgsMapLayer* QgsHighlight::mLayer

private

Definition at line 74 of file qgshighlight.h.

Referenced by init(), and vectorLayer().

QPen QgsHighlight::mPen

private

Definition at line 72 of file qgshighlight.h.

Referenced by paint(), paintPolygon(), setColor(), and setWidth().

QgsFeatureRendererV2* QgsHighlight::mRenderer

private

Definition at line 76 of file qgshighlight.h.

Referenced by paint(), setColor(), and ~QgsHighlight().

QColor QgsHighlight::mTemporaryFillColor

private

Definition at line 77 of file qgshighlight.h.

Referenced by paint(), and setSymbolColor().

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

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