A pie chart diagram. More...
#include <qgspiediagram.h>
Public Member Functions | |
| QgsPieDiagram () | |
| QgsPieDiagram * | clone () const override |
| Returns an instance that is equivalent to this one. More... | |
| QString | diagramName () const override |
| Gets a descriptive name for this diagram type. More... | |
| QSizeF | diagramSize (const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s) override |
| Returns the size in map units the diagram will use to render. More... | |
| QSizeF | diagramSize (const QgsFeature &feature, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) override |
| Returns the size in map units the diagram will use to render. Interpolate size. More... | |
| double | legendSize (double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) const override |
| Returns the size of the legend item for the diagram corresponding to a specified value. More... | |
| void | renderDiagram (const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position) override |
| Draws the diagram at the given position (in pixel coordinates) More... | |
 Public Member Functions inherited from QgsDiagram | |
| virtual | ~QgsDiagram () |
| void | clearCache () |
| QgsExpression * | getExpression (const QString &expression, const QgsExpressionContext &context) |
| Returns a prepared expression for the specified context. More... | |
Additional Inherited Members | |
| Protected Member Functions inherited from QgsDiagram | |
| QgsDiagram ()=default | |
| Constructor for QgsDiagram. More... | |
| QgsDiagram (const QgsDiagram &other) | |
| QFont | scaledFont (const QgsDiagramSettings &s, const QgsRenderContext &c) |
| Calculates a size to match the current settings and rendering context. More... | |
| void | setPenWidth (QPen &pen, const QgsDiagramSettings &s, const QgsRenderContext &c) |
| Changes the pen width to match the current settings and rendering context. More... | |
| QSizeF | sizeForValue (double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) const |
| Returns the scaled size of a diagram for a value, respecting the specified diagram interpolation settings. More... | |
| double | sizePainterUnits (double l, const QgsDiagramSettings &s, const QgsRenderContext &c) |
| Calculates a length to match the current settings and rendering context. More... | |
| QSizeF | sizePainterUnits (QSizeF size, const QgsDiagramSettings &s, const QgsRenderContext &c) |
| Calculates a size to match the current settings and rendering context. More... | |
Detailed Description
A pie chart diagram.
Definition at line 38 of file qgspiediagram.h.
Constructor & Destructor Documentation
◆ QgsPieDiagram()
| QgsPieDiagram::QgsPieDiagram | ( | ) |
Definition at line 23 of file qgspiediagram.cpp.
Member Function Documentation
◆ clone()
|
overridevirtual |
Returns an instance that is equivalent to this one.
- Since
- QGIS 2.4
Implements QgsDiagram.
Definition at line 29 of file qgspiediagram.cpp.
◆ diagramName()
|
overridevirtual |
Gets a descriptive name for this diagram type.
Implements QgsDiagram.
Definition at line 70 of file qgspiediagram.cpp.
◆ diagramSize() [1/2]
|
overridevirtual |
Returns the size in map units the diagram will use to render.
Implements QgsDiagram.
Definition at line 75 of file qgspiediagram.cpp.
◆ diagramSize() [2/2]
|
overridevirtual |
Returns the size in map units the diagram will use to render. Interpolate size.
Implements QgsDiagram.
Definition at line 34 of file qgspiediagram.cpp.
◆ legendSize()
|
overridevirtual |
Returns the size of the legend item for the diagram corresponding to a specified value.
- Parameters
-
value value to return legend item size for s diagram settings is interpolation settings
- Since
- QGIS 2.16
Implements QgsDiagram.
Definition at line 64 of file qgspiediagram.cpp.
◆ renderDiagram()
|
overridevirtual |
Draws the diagram at the given position (in pixel coordinates)
Implements QgsDiagram.
Definition at line 82 of file qgspiediagram.cpp.
The documentation for this class was generated from the following files:
- /build/qgis-3.22.4+99unstable/src/core/diagram/qgspiediagram.h
- /build/qgis-3.22.4+99unstable/src/core/diagram/qgspiediagram.cpp
