QgsSingleBandPseudoColorRendererWidget class
Single band pseudo color renderer widget consists of a color ramp shader widget, a raster min max widget and a band selector.
Contents
Public static functions
- static auto create(QgsRasterLayer* layer, const QgsRectangle& extent) -> QgsRasterRendererWidget*
- Creates new raster renderer widget.
Constructors, destructors, conversion operators
- QgsSingleBandPseudoColorRendererWidget(QgsRasterLayer* layer, const QgsRectangle& extent = QgsRectangle())
- Creates new raster renderer widget.
Public functions
- auto currentBand() const -> int
- Returns the current raster band number.
- void doComputations() override
- Load programmatically with current values.
- auto minMaxWidget() -> QgsRasterMinMaxWidget* override
- Returns min/max widget when it exists.
- void setFromRenderer(const QgsRasterRenderer* r)
- Set state of the widget from renderer settings.
- void setMapCanvas(QgsMapCanvas* canvas) override
- Sets the map canvas associated with the widget.
Public slots
- void loadMinMax(int bandNo, double min, double max)
- called when new min/max values are loaded
- void loadMinMaxFromTree(double min, double max)
- called when the color ramp tree has changed
Function documentation
void QgsSingleBandPseudoColorRendererWidget::
Sets the map canvas associated with the widget.
| Parameters | |
|---|---|
| canvas | map canvas |
This allows the widget to retrieve the current map extent and other properties from the canvas.