QGIS API Documentation 3.27.0-Master (f261cc1f8b)
qgshtmlwidgetwrapper.h
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1/***************************************************************************
2 qgshtmlwidgetwrapper.h
3
4 ---------------------
5 begin : 23.03.2019
6 copyright : (C) 2019 by Alessandro Pasotti
7 email : elpaso at itopen dot it
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 QGSHTMLWIDGETWRAPPER_H
17#define QGSHTMLWIDGETWRAPPER_H
18
19#include "qgswidgetwrapper.h"
20#include "qgswebview.h"
21#include "qgis_sip.h"
22#include "qgis_gui.h"
23
29class GUI_EXPORT QgsHtmlWidgetWrapper : public QgsWidgetWrapper
30{
31 Q_OBJECT
32
33 public:
34
42 QgsHtmlWidgetWrapper( 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 setHtmlCode( const QString &htmlCode );
55
60 bool needsGeometry() const;
61
62 public slots:
63 void setFeature( const QgsFeature &feature ) override;
64
65 private slots:
67 void setHtmlContext( );
68#ifdef WITH_QTWEBKIT
69 void fixHeight();
70#endif
71
72 private:
73
75 void checkGeometryNeeds();
76
77 QString mHtmlCode;
78 QgsWebView *mWidget = nullptr;
79 QgsFeature mFeature;
80 bool mNeedsGeometry = false;
81
82 friend class TestQgsHtmlWidgetWrapper;
83};
84
85
86#ifndef SIP_RUN
88
94class HtmlExpression : public QObject
95{
96 Q_OBJECT
97
98 public:
100 void setExpressionContext( const QgsExpressionContext &context );
101
102 public:
103
105 Q_INVOKABLE QString evaluate( const QString &expression ) const;
106
107 private:
108 QgsExpressionContext mExpressionContext;
109};
110
117class NeedsGeometryEvaluator : public QObject
118{
119 Q_OBJECT
120
121 public:
122
124 bool needsGeometry() const { return mNeedsGeometry; }
125
127 void setExpressionContext( const QgsExpressionContext &context );
128
130 Q_INVOKABLE void evaluate( const QString &expression );
131
132 private:
133 bool mNeedsGeometry = false;
134 QgsExpressionContext mExpressionContext;
135};
136
137
139#endif //SIP_RUN
140
141#endif // QGSHTMLWIDGETWRAPPER_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 HTML code.
Represents a vector layer which manages a vector based data sets.
The QgsWebView class is a collection of stubs to mimic the API of QWebView on systems where the real ...
Definition: qgswebview.h:66
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.