QGIS API Documentation: QgsSingleBandGrayRendererWidget Class Reference

QGIS API Documentation 3.40.0-Bratislava (b56115d8743)

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#include <qgssinglebandgrayrendererwidget.h>

Inheritance diagram for QgsSingleBandGrayRendererWidget:

Inheritance graph

[legend]

Public Slots
void	loadMinMax (int bandNo, double min, double max)
	called when new min/max values are loaded

Public Member Functions
	QgsSingleBandGrayRendererWidget (QgsRasterLayer *layer, const QgsRectangle &extent=QgsRectangle())

QgsContrastEnhancement::ContrastEnhancementAlgorithm	contrastEnhancementAlgorithm () const override
	Returns the contrast enhancement algorithm to be used by the raster renderer.

void	doComputations () override
	Load programmatically with current values.

QString	max (int index=0) override

QString	min (int index=0) override

QgsRasterMinMaxWidget *	minMaxWidget () override
	Returns min/max widget when it exists.

QgsRasterRenderer *	renderer () override
	Creates a new renderer, using the properties defined in the widget.

int	selectedBand (int index=0) override

void	setContrastEnhancementAlgorithm (QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm) override
	Sets the contrast enhancement algorithm to be used by the raster renderer.

void	setFromRenderer (const QgsRasterRenderer *r)
	Sets the widget state from the specified renderer.

void	setMapCanvas (QgsMapCanvas *canvas) override
	Sets the map canvas associated with the widget.

void	setMax (const QString &value, int index=0) override

void	setMin (const QString &value, int index=0) override

Public Member Functions inherited from QgsRasterRendererWidget
	QgsRasterRendererWidget (QgsRasterLayer *layer, const QgsRectangle &extent)

QgsMapCanvas *	mapCanvas ()
	Returns the map canvas associated with the widget.

const QgsRasterLayer *	rasterLayer () const
	Returns the raster layer associated with the widget.

void	setRasterLayer (QgsRasterLayer *layer)
	Sets the raster layer associated with the widget.

virtual void	setStdDev (const QString &value)

virtual QString	stdDev ()

Static Public Member Functions
static QgsRasterRendererWidget *	create (QgsRasterLayer *layer, const QgsRectangle &extent)

Additional Inherited Members
Signals inherited from QgsRasterRendererWidget
void	widgetChanged ()
	Emitted when something on the widget has changed.

Protected Attributes inherited from QgsRasterRendererWidget
QgsMapCanvas *	mCanvas = nullptr
	Associated map canvas.

QgsRectangle	mExtent
	Current extent.

QgsRasterLayer *	mRasterLayer = nullptr

Detailed Description

Definition at line 33 of file qgssinglebandgrayrendererwidget.h.

Constructor & Destructor Documentation

◆ QgsSingleBandGrayRendererWidget()

QgsSingleBandGrayRendererWidget::QgsSingleBandGrayRendererWidget	(	QgsRasterLayer *	layer,
		const QgsRectangle &	extent = `QgsRectangle()`
	)

Definition at line 26 of file qgssinglebandgrayrendererwidget.cpp.

Member Function Documentation

◆ contrastEnhancementAlgorithm()

QgsContrastEnhancement::ContrastEnhancementAlgorithm QgsSingleBandGrayRendererWidget::contrastEnhancementAlgorithm ( ) const

overridevirtual

Returns the contrast enhancement algorithm to be used by the raster renderer.

Since: QGIS 3.26

Reimplemented from QgsRasterRendererWidget.

Definition at line 255 of file qgssinglebandgrayrendererwidget.cpp.

◆ create()

static QgsRasterRendererWidget * QgsSingleBandGrayRendererWidget::create	(	QgsRasterLayer *	layer,
		const QgsRectangle &	extent
	)

inlinestatic

Definition at line 39 of file qgssinglebandgrayrendererwidget.h.

◆ doComputations()

void QgsSingleBandGrayRendererWidget::doComputations ( )

overridevirtual

Load programmatically with current values.

Reimplemented from QgsRasterRendererWidget.

Definition at line 111 of file qgssinglebandgrayrendererwidget.cpp.

◆ loadMinMax

void QgsSingleBandGrayRendererWidget::loadMinMax	(	int	bandNo,
		double	min,
		double	max
	)

slot

called when new min/max values are loaded

Definition at line 147 of file qgssinglebandgrayrendererwidget.cpp.

◆ max()

QString QgsSingleBandGrayRendererWidget::max ( int index = 0 )

inlineoverridevirtual

Reimplemented from QgsRasterRendererWidget.

Definition at line 50 of file qgssinglebandgrayrendererwidget.h.

◆ min()

QString QgsSingleBandGrayRendererWidget::min ( int index = 0 )

inlineoverridevirtual

Reimplemented from QgsRasterRendererWidget.

Definition at line 49 of file qgssinglebandgrayrendererwidget.h.

◆ minMaxWidget()

QgsRasterMinMaxWidget * QgsSingleBandGrayRendererWidget::minMaxWidget ( )

inlineoverridevirtual

Returns min/max widget when it exists.

Reimplemented from QgsRasterRendererWidget.

Definition at line 59 of file qgssinglebandgrayrendererwidget.h.

◆ renderer()

QgsRasterRenderer * QgsSingleBandGrayRendererWidget::renderer ( )

overridevirtual

Creates a new renderer, using the properties defined in the widget.

The caller takes ownership of the returned renderer.

Implements QgsRasterRendererWidget.

Definition at line 81 of file qgssinglebandgrayrendererwidget.cpp.

◆ selectedBand()

int QgsSingleBandGrayRendererWidget::selectedBand ( int index = 0 )

inlineoverridevirtual

Reimplemented from QgsRasterRendererWidget.

Definition at line 53 of file qgssinglebandgrayrendererwidget.h.

◆ setContrastEnhancementAlgorithm()

void QgsSingleBandGrayRendererWidget::setContrastEnhancementAlgorithm ( QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm )

overridevirtual

Sets the contrast enhancement algorithm to be used by the raster renderer.

Since: QGIS 3.26

Reimplemented from QgsRasterRendererWidget.

Definition at line 260 of file qgssinglebandgrayrendererwidget.cpp.

◆ setFromRenderer()

void QgsSingleBandGrayRendererWidget::setFromRenderer ( const QgsRasterRenderer * r )

Sets the widget state from the specified renderer.

Definition at line 182 of file qgssinglebandgrayrendererwidget.cpp.

◆ setMapCanvas()

void QgsSingleBandGrayRendererWidget::setMapCanvas ( QgsMapCanvas * canvas )

overridevirtual

Sets the map canvas associated with the widget.

This allows the widget to retrieve the current map extent and other properties from the canvas.

Parameters

canvas map canvas

See also: mapCanvas()

Reimplemented from QgsRasterRendererWidget.

Definition at line 116 of file qgssinglebandgrayrendererwidget.cpp.

◆ setMax()

void QgsSingleBandGrayRendererWidget::setMax	(	const QString &	value,
		int	index = `0`
	)

overridevirtual

Reimplemented from QgsRasterRendererWidget.

Definition at line 219 of file qgssinglebandgrayrendererwidget.cpp.

◆ setMin()

void QgsSingleBandGrayRendererWidget::setMin	(	const QString &	value,
		int	index = `0`
	)

overridevirtual

Reimplemented from QgsRasterRendererWidget.

Definition at line 212 of file qgssinglebandgrayrendererwidget.cpp.

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

/build/qgis-3.40.0+99sid/src/gui/raster/qgssinglebandgrayrendererwidget.h
/build/qgis-3.40.0+99sid/src/gui/raster/qgssinglebandgrayrendererwidget.cpp