mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
967d37adc7
Also remove all other QgsFields pointers and replace with references/values, since QgsFields objects are implicitly shared
86 lines
4.3 KiB
Plaintext
86 lines
4.3 KiB
Plaintext
class QgsDiagram
|
|
{
|
|
%TypeHeaderCode
|
|
#include <qgsdiagram.h>
|
|
%End
|
|
public:
|
|
virtual ~QgsDiagram();
|
|
/** Returns an instance that is equivalent to this one
|
|
* @note added in 2.4 */
|
|
virtual QgsDiagram* clone() const = 0 /Factory/;
|
|
|
|
void clearCache();
|
|
|
|
/** Returns a prepared expression for the specified context.
|
|
* @param expression expression string
|
|
* @param context expression context
|
|
* @note added in QGIS 2.12
|
|
*/
|
|
QgsExpression* getExpression( const QString& expression, const QgsExpressionContext& context );
|
|
|
|
/** @deprecated `void renderDiagram( const QgsFeature& feature, QgsRenderContext& c, const QgsDiagramSettings& s, const QPointF& position )` should be used instead */
|
|
virtual void renderDiagram( const QgsAttributes& att, QgsRenderContext& c, const QgsDiagramSettings& s, QPointF position ) /Deprecated/;
|
|
/** Draws the diagram at the given position (in pixel coordinates)*/
|
|
virtual void renderDiagram( const QgsFeature& feature, QgsRenderContext& c, const QgsDiagramSettings& s, QPointF position ) = 0;
|
|
virtual QString diagramName() const = 0;
|
|
/** Returns the size in map units the diagram will use to render.*/
|
|
virtual QSizeF diagramSize( const QgsAttributes& attributes, const QgsRenderContext& c, const QgsDiagramSettings& s ) = 0;
|
|
/** @deprecated `QSizeF diagramSize( const QgsFeature& feature, const QgsRenderContext& c, const QgsDiagramSettings& s, const QgsDiagramInterpolationSettings& is )` should be used instead */
|
|
virtual QSizeF diagramSize( const QgsAttributes& attributes, const QgsRenderContext& c, const QgsDiagramSettings& s, const QgsDiagramInterpolationSettings& is ) /Deprecated/;
|
|
/** Returns the size in map units the diagram will use to render. Interpolate size*/
|
|
virtual QSizeF diagramSize( const QgsFeature& feature, const QgsRenderContext& c, const QgsDiagramSettings& s, const QgsDiagramInterpolationSettings& is ) = 0;
|
|
|
|
/** Returns the size of the legend item for the diagram corresponding to a specified value.
|
|
* @param value value to return legend item size for
|
|
* @param s diagram settings
|
|
* @param is interpolation settings
|
|
* @note added in QGIS 2.16
|
|
*/
|
|
virtual double legendSize( double value, const QgsDiagramSettings& s, const QgsDiagramInterpolationSettings& is ) const = 0;
|
|
|
|
protected:
|
|
QgsDiagram();
|
|
QgsDiagram( const QgsDiagram& other );
|
|
|
|
/** Changes the pen width to match the current settings and rendering context
|
|
* @param pen The pen to modify
|
|
* @param s The settings that specify the pen width
|
|
* @param c The rendering specifying the proper scale units for pixel conversion
|
|
*/
|
|
void setPenWidth( QPen& pen, const QgsDiagramSettings& s, const QgsRenderContext& c );
|
|
|
|
/** Calculates a size to match the current settings and rendering context
|
|
* @param size The size to convert
|
|
* @param s The settings that specify the size type
|
|
* @param c The rendering specifying the proper scale units for pixel conversion
|
|
*
|
|
* @return The converted size for rendering
|
|
*/
|
|
QSizeF sizePainterUnits( QSizeF size, const QgsDiagramSettings& s, const QgsRenderContext& c );
|
|
|
|
/** Calculates a length to match the current settings and rendering context
|
|
* @param l The length to convert
|
|
* @param s Unused
|
|
* @param c The rendering specifying the proper scale units for pixel conversion
|
|
*
|
|
* @return The converted length for rendering
|
|
*/
|
|
float sizePainterUnits( float l, const QgsDiagramSettings& s, const QgsRenderContext& c );
|
|
|
|
/** Calculates a size to match the current settings and rendering context
|
|
* @param s The settings that contain the font size and size type
|
|
* @param c The rendering specifying the proper scale units for pixel conversion
|
|
*
|
|
* @return The properly scaled font for rendering
|
|
*/
|
|
QFont scaledFont( const QgsDiagramSettings& s, const QgsRenderContext& c );
|
|
|
|
/** Returns the scaled size of a diagram for a value, respecting the specified diagram interpolation settings.
|
|
* @param value value to calculate corresponding circular size for
|
|
* @param s diagram settings
|
|
* @param is interpolation settings
|
|
* @note added in QGIS 2.16
|
|
*/
|
|
QSizeF sizeForValue( double value, const QgsDiagramSettings& s, const QgsDiagramInterpolationSettings& is ) const;
|
|
};
|