QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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qgstextdiagram.h
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1/***************************************************************************
2 qgstextdiagram.h
3 ---------------------
4 begin : March 2011
5 copyright : (C) 2011 by Marco Hugentobler
6 email : marco dot hugentobler at sourcepole dot ch
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15#ifndef QGSTEXTDIAGRAM_H
16#define QGSTEXTDIAGRAM_H
17
18#define DIAGRAM_NAME_TEXT "Text"
19
20#include "qgis_core.h"
21#include "qgis.h"
22#include "qgsdiagram.h"
23#include <QPen>
24#include <QBrush>
25
26class QPainter;
27class QPointF;
30class QgsFeature;
32
39{
40 public:
41 enum Shape
42 {
43 Circle = 0,
45 Triangle
46 };
47
49 {
50 Horizontal = 0,
51 Vertical
52 };
53
55 QgsTextDiagram *clone() const override SIP_FACTORY;
56
57 void renderDiagram( const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position ) override;
58
59 QSizeF diagramSize( const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s ) override;
60 QSizeF diagramSize( const QgsFeature &feature, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) override;
61 double legendSize( double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) const override;
62
63 QString diagramName() const override;
64
65 private:
66 Orientation mOrientation = Vertical;
67 Shape mShape = Circle;
68 QBrush mBrush; //transparent brush
69 QPen mPen;
70
75 void lineEllipseIntersection( QPointF lineStart, QPointF lineEnd, QPointF ellipseMid, double r1, double r2, QList<QPointF> &result ) const;
76};
77
78#endif // QGSTEXTDIAGRAM_H
A vector of attributes.
Additional diagram settings for interpolated size rendering.
Stores the settings for rendering a single diagram.
Base class for all diagram types.
Definition qgsdiagram.h:40
virtual QgsDiagram * clone() const =0
Returns an instance that is equivalent to this one.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:56
Contains information about the context of a rendering operation.
A text based diagram.
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
#define SIP_FACTORY
Definition qgis_sip.h:76
#define SIP_NODEFAULTCTORS
Definition qgis_sip.h:101