QGIS API Documentation 3.37.0-Master (684a802617f)
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qgstextannotation.h
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1/***************************************************************************
2 qgstextannotation.h
3 -------------------
4 begin : February 9, 2010
5 copyright : (C) 2010 by Marco Hugentobler
6 email : marco dot hugentobler at hugis dot net
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSTEXTANNOTATION_H
19#define QGSTEXTANNOTATION_H
20
21#include "qgsannotation.h"
22#include <QTextDocument>
23#include "qgis_core.h"
24
30class CORE_EXPORT QgsTextAnnotation: public QgsAnnotation
31{
32 Q_OBJECT
33
34 public:
35
39 QgsTextAnnotation( QObject *parent SIP_TRANSFERTHIS = nullptr );
40
41 QgsTextAnnotation *clone() const override SIP_FACTORY;
42
48 const QTextDocument *document() const;
49
55 void setDocument( const QTextDocument *doc );
56
57 void writeXml( QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context ) const override;
58 void readXml( const QDomElement &itemElem, const QgsReadWriteContext &context ) override;
59
64
65 protected:
66
67 void renderAnnotation( QgsRenderContext &context, QSizeF size ) const override;
68
69 private:
70 std::unique_ptr< QTextDocument > mDocument;
71};
72
73#endif // QGSTEXTANNOTATION_H
Abstract base class for annotation items which are drawn over a map.
virtual void renderAnnotation(QgsRenderContext &context, QSizeF size) const =0
Renders the annotation's contents to a target /a context at the specified /a size.
virtual void readXml(const QDomElement &itemElem, const QgsReadWriteContext &context)=0
Restores the annotation's state from a DOM element.
virtual QgsAnnotation * clone() const =0
Clones the annotation, returning a new copy of the annotation reflecting the annotation's current sta...
virtual void writeXml(QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context) const =0
Writes the annotation state to a DOM element.
The class is used as a container of context for various read/write operations on other objects.
Contains information about the context of a rendering operation.
An annotation item that displays formatted text from a QTextDocument document.
static QgsTextAnnotation * create()
Returns a new QgsTextAnnotation object.
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53
#define SIP_FACTORY
Definition qgis_sip.h:76