QGIS API Documentation 3.29.0-Master (8c80f25a4f)
qgslegendfilterbutton.h
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1/***************************************************************************
2 qgslegendfilterbutton.h - QToolButton for legend filter by map content
3 --------------------------------------
4 Date : June 2015
5 Copyright : (C) 2015 by Hugo Mercier at Oslandia
6 Email : hugo dot mercier at oslandia dot com
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 QGS_LEGEND_FILTER_BUTTON_H
16#define QGS_LEGEND_FILTER_BUTTON_H
17
18#include <QToolButton>
19#include "qgis_gui.h"
20
21class QgsVectorLayer;
22
31class GUI_EXPORT QgsLegendFilterButton: public QToolButton
32{
33 Q_OBJECT
34
35 public:
36
42 QgsLegendFilterButton( QWidget *parent = nullptr );
43
47 QString expressionText() const;
48
53 void setExpressionText( const QString &expression );
54
59 QgsVectorLayer *vectorLayer() const;
60
65 void setVectorLayer( QgsVectorLayer *layer );
66
67 signals:
68
73
74 private:
75 QMenu *mMenu = nullptr;
76 QAction *mSetExpressionAction = nullptr;
77 QAction *mClearExpressionAction = nullptr;
78 QString mExpression;
79
80 void updateMenu();
81
82 QgsVectorLayer *mLayer = nullptr;
83 private slots:
84 void onSetLegendFilterExpression();
85 void onClearFilterExpression();
86 void onToggle( bool );
87};
88
89#endif // QGS_FILTER_LEGEND_BUTTON_H
A tool button that allows enabling or disabling legend filter by contents of the map.
void expressionTextChanged()
Emitted when the expression text changes.
Represents a vector layer which manages a vector based data sets.