Graphical histogram for displaying distribution of field values and editing range breaks for a QgsGraduatedSymbolRenderer renderer. More...
#include <qgsgraduatedhistogramwidget.h>
Signals | |
| void | rangesModified (bool rangesAdded) |
| Emitted when the user modifies the graduated ranges using the histogram widget. More... | |
Public Member Functions | |
| QgsGraduatedHistogramWidget (QWidget *parent=nullptr) | |
| QgsGraduatedHistogramWidget constructor. More... | |
| void | setRenderer (QgsGraduatedSymbolRenderer *renderer) |
| Sets the QgsGraduatedSymbolRenderer renderer associated with the histogram. More... | |
 Public Member Functions inherited from QgsHistogramWidget | |
| QgsHistogramWidget (QWidget *parent=nullptr, QgsVectorLayer *layer=nullptr, const QString &fieldOrExp=QString()) | |
| QgsHistogramWidget constructor. More... | |
| ~QgsHistogramWidget () override | |
| QBrush | brush () const |
| Returns the brush used when drawing histogram bars. More... | |
| QgsRangeList | graduatedRanges () const |
| Returns the graduated ranges associated with the histogram. More... | |
| QgsVectorLayer * | layer () |
| Returns the layer currently associated with the widget. More... | |
| QPen | pen () const |
| Returns the pen used when drawing histogram bars. More... | |
| void | setBrush (const QBrush &brush) |
| Sets the brush used for drawing histogram bars. More... | |
| void | setGraduatedRanges (const QgsRangeList &ranges) |
| Sets the graduated ranges associated with the histogram. More... | |
| void | setPen (const QPen &pen) |
| Sets the pen to use when drawing histogram bars. More... | |
| void | setXAxisTitle (const QString &title) |
| Sets the title for the histogram's x-axis. More... | |
| void | setYAxisTitle (const QString &title) |
| Sets the title for the histogram's y-axis. More... | |
| QString | sourceFieldExp () const |
| Returns the source field name or expression used to calculate values displayed in the histogram. More... | |
| QString | xAxisTitle () const |
| Returns the title for the histogram's x-axis. More... | |
| QString | yAxisTitle () const |
| Returns the title for the histogram's y-axis. More... | |
Protected Member Functions | |
| void | drawHistogram () override |
| Updates and redraws the histogram. More... | |
Additional Inherited Members | |
| Public Slots inherited from QgsHistogramWidget | |
| void | refresh () |
| Redraws the histogram. More... | |
| void | refreshValues () |
| Refreshes the values for the histogram by fetching them from the layer. More... | |
| void | setLayer (QgsVectorLayer *layer) |
| Sets the vector layer associated with the histogram. More... | |
| void | setSourceFieldExp (const QString &fieldOrExp) |
| Sets the source field or expression to use for values in the histogram. More... | |
| Protected Attributes inherited from QgsHistogramWidget | |
| QwtPlot * | mPlot = nullptr |
| QList< QwtPlotMarker *> | mRangeMarkers |
| QgsRangeList | mRanges |
Detailed Description
Graphical histogram for displaying distribution of field values and editing range breaks for a QgsGraduatedSymbolRenderer renderer.
- Since
- QGIS 2.9
Definition at line 36 of file qgsgraduatedhistogramwidget.h.
Constructor & Destructor Documentation
◆ QgsGraduatedHistogramWidget()
| QgsGraduatedHistogramWidget::QgsGraduatedHistogramWidget | ( | QWidget * | parent = nullptr | ) |
QgsGraduatedHistogramWidget constructor.
- Parameters
-
parent parent widget
Definition at line 43 of file qgsgraduatedhistogramwidget.cpp.
Member Function Documentation
◆ drawHistogram()
|
overrideprotectedvirtual |
Updates and redraws the histogram.
Reimplemented from QgsHistogramWidget.
Definition at line 65 of file qgsgraduatedhistogramwidget.cpp.
◆ rangesModified
|
signal |
Emitted when the user modifies the graduated ranges using the histogram widget.
- Parameters
-
rangesAdded true if the user has added ranges, false if the user has just modified existing range breaks
◆ setRenderer()
| void QgsGraduatedHistogramWidget::setRenderer | ( | QgsGraduatedSymbolRenderer * | renderer | ) |
Sets the QgsGraduatedSymbolRenderer renderer associated with the histogram.
The histogram will fetch the ranges from the renderer before every refresh.
- Parameters
-
renderer associated QgsGraduatedSymbolRenderer
Definition at line 60 of file qgsgraduatedhistogramwidget.cpp.
The documentation for this class was generated from the following files:
- /tmp/buildd/qgis-3.6.0+99unstable/src/gui/symbology/qgsgraduatedhistogramwidget.h
- /tmp/buildd/qgis-3.6.0+99unstable/src/gui/symbology/qgsgraduatedhistogramwidget.cpp
