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532eb58d1f
This commit implements the improvements described at: https://lists.osgeo.org/pipermail/qgis-developer/2016-September/044393.html The QgsRasterMinMaxWidget now offers a seetting to specify that the statistics should be computed each time the canvas extent changes. Other changes: - the content of the QgsRasterMinMaxWidget is now persistant. - there is no longer any Load button. The global Apply / OK button of the raster properties dialog has this effect. - the default "limits" for single band raster is now MinMax and not CumulativeCut - the default "limits" can be configured for single band, multi band single byte and multi band multi byte - "Strech using current extent" honours the "limits" instead of forcing min/max.
71 lines
2.3 KiB
Plaintext
71 lines
2.3 KiB
Plaintext
class QgsRasterMinMaxWidget: QWidget
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{
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%TypeHeaderCode
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#include <qgsrasterminmaxwidget.h>
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%End
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public:
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QgsRasterMinMaxWidget( QgsRasterLayer* theLayer, QWidget *parent /TransferThis/ = 0 );
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~QgsRasterMinMaxWidget();
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/** Sets the extent to use for minimum and maximum value calculation.
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* @param theExtent extent in raster layer's CRS
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* @note if a map canvas is set using setMapCanvas(), its extent will take
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* precedence over any extent set using this method.
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*/
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void setExtent( const QgsRectangle& theExtent );
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/** Sets the map canvas associated with the widget. This allows the widget to retrieve the current
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* map extent from the canvas. If a canvas is set it will take precedence over any extent
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* set from calling setExtent().
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* @param canvas map canvas
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* @see mapCanvas()
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* @note added in QGIS 2.16
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*/
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void setMapCanvas( QgsMapCanvas* canvas );
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/** Returns the map canvas associated with the widget.
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* @see setMapCanvas()
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* @see canvasExtent()
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* @note added in QGIS 2.16
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*/
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QgsMapCanvas* mapCanvas();
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void setBands( const QList<int> & theBands );
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/** Return the extent selected by the user.
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Either an empty extent for 'full' or the current visible extent. */
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QgsRectangle extent();
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/** Return the selected sample size. */
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int sampleSize();
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//! \brief Set the "source" of min/max values.
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void setFromMinMaxOrigin( const QgsRasterMinMaxOrigin& );
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//! \brief Return a QgsRasterMinMaxOrigin object with the widget values.
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QgsRasterMinMaxOrigin minMaxOrigin();
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//! Hide updated extent radio button
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void hideUpdatedExtent();
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//! Load programmaticaly with current values
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void doComputations();
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//! Uncheck cumulative cut, min/max, std-dev radio buttons
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void userHasSetManualMinMaxValues();
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//! Return if the widget is collaped.
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bool isCollapsed() const;
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//! Set collapsed state of widget
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void setCollapsed(bool b);
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signals:
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/**
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* Emitted when something on the widget has changed.
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* All widgets will fire this event to notify of an internal change.
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*/
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void widgetChanged();
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//! signal emitted when new min/max values are computed from statistics.
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void load( int theBandNo, double theMin, double theMax );
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};
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