QGIS API Documentation 3.27.0-Master (f261cc1f8b)
qgsqmlwidgetwrapper.h
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1/***************************************************************************
2 qgsqmlwidgetwrapper.h
3
4 ---------------------
5 begin : 25.6.2018
6 copyright : (C) 2018 by Matthias Kuhn
8 ***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16#ifndef QGSQMLWIDGETWRAPPER_H
17#define QGSQMLWIDGETWRAPPER_H
18
19#include "qgswidgetwrapper.h"
20#include "qgis_sip.h"
21#include "qgis_gui.h"
22#include <QtQuickWidgets/QQuickWidget>
23
29class GUI_EXPORT QgsQmlWidgetWrapper : public QgsWidgetWrapper
30{
31 Q_OBJECT
32
33 public:
34
42 QgsQmlWidgetWrapper( QgsVectorLayer *layer, QWidget *editor, QWidget *parent );
43
44 bool valid() const override;
45
46 QWidget *createWidget( QWidget *parent ) override;
47
48 void initWidget( QWidget *editor ) override;
49
51 void reinitWidget();
52
54 void setQmlCode( const QString &qmlCode );
55
56 public slots:
57 void setFeature( const QgsFeature &feature ) override;
58
59 private slots:
61 void setQmlContext();
62
63 private:
64 QTemporaryFile mQmlFile;
65 QQuickWidget *mWidget = nullptr;
66 QgsFeature mFeature;
67};
68
69
70#ifndef SIP_RUN
72
78class QmlExpression : public QObject
79{
80 Q_OBJECT
81
82 public:
84 void setExpressionContext( const QgsExpressionContext &context );
85
87 Q_INVOKABLE QVariant evaluate( const QString &expression ) const;
88
89 private:
90 QgsExpressionContext mExpressionContext;
91};
93#endif //SIP_RUN
94
95#endif // QGSQMLWIDGETWRAPPER_H
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition: qgsfeature.h:56
Wraps a QQuickWidget to display QML code.
Represents a vector layer which manages a vector based data sets.
Manages an editor widget Widget and wrapper share the same parent.
virtual void setFeature(const QgsFeature &feature)=0
Is called when the value of the widget needs to be changed.
virtual bool valid() const =0
Returns true if the widget has been properly initialized.
virtual void initWidget(QWidget *editor)
This method should initialize the editor widget with runtime data.
virtual QWidget * createWidget(QWidget *parent)=0
This method should create a new widget with the provided parent.