QGIS API Documentation 3.37.0-Master (4ace69f83af)
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qgsfloatingwidget.h
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1/***************************************************************************
2 qgsfloatingwidget.h
3 -------------------
4 begin : April 2016
5 copyright : (C) Nyall Dawson
6 email : nyall dot dawson at gmail 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 QGSFLOATINGWIDGET_H
16#define QGSFLOATINGWIDGET_H
17
18#include <QWidget>
19#include <QPointer>
20#include "qgis_sip.h"
21#include "qgis_gui.h"
22
23class QgsFloatingWidgetEventFilter;
24
33class GUI_EXPORT QgsFloatingWidget: public QWidget
34{
35 Q_OBJECT
36 Q_PROPERTY( QWidget *anchorWidget READ anchorWidget WRITE setAnchorWidget NOTIFY anchorWidgetChanged )
37 Q_PROPERTY( AnchorPoint anchorPoint READ anchorPoint WRITE setAnchorPoint NOTIFY anchorPointChanged )
38 Q_PROPERTY( AnchorPoint anchorWidgetPoint READ anchorWidgetPoint WRITE setAnchorWidgetPoint NOTIFY anchorWidgetPointChanged )
39
40 public:
41
55 Q_ENUM( AnchorPoint )
56
57
61 QgsFloatingWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
62
69 void setAnchorWidget( QWidget *widget );
70
76 QWidget *anchorWidget();
77
83 AnchorPoint anchorPoint() const { return mFloatAnchorPoint; }
84
91 void setAnchorPoint( AnchorPoint point );
92
99 AnchorPoint anchorWidgetPoint() const { return mAnchorWidgetAnchorPoint; }
100
107 void setAnchorWidgetPoint( AnchorPoint point );
108
109 signals:
110
112 void anchorWidgetChanged( QWidget *widget );
113
116
119
120 protected:
121 void showEvent( QShowEvent *e ) override;
122 void paintEvent( QPaintEvent *e ) override;
123 void resizeEvent( QResizeEvent *e ) override;
124
125 private slots:
126
128 void onAnchorPointChanged();
129
130 private:
131
132 QPointer< QWidget > mAnchorWidget;
133 QgsFloatingWidgetEventFilter *mParentEventFilter = nullptr;
134 QgsFloatingWidgetEventFilter *mAnchorEventFilter = nullptr;
135 AnchorPoint mFloatAnchorPoint = BottomMiddle;
136 AnchorPoint mAnchorWidgetAnchorPoint = TopMiddle;
137
138};
139
140
141#ifndef SIP_RUN
142
144
145class QgsFloatingWidgetEventFilter: public QObject
146{
147 Q_OBJECT
148
149 public:
150
151 QgsFloatingWidgetEventFilter( QWidget *parent = nullptr );
152
153 bool eventFilter( QObject *object, QEvent *event ) override;
154
155 signals:
156
158 void anchorPointChanged();
159
160};
161
163
164#endif
165
166#endif // QGSFLOATINGWIDGET_H
A QWidget subclass for creating widgets which float outside of the normal Qt layout system.
void anchorWidgetPointChanged(QgsFloatingWidget::AnchorPoint point)
Emitted when the anchor widget point changes.
void anchorPointChanged(QgsFloatingWidget::AnchorPoint point)
Emitted when the anchor point changes.
AnchorPoint anchorWidgetPoint() const
Returns the anchor widget's anchor point, which corresponds to the point on the anchor widget which t...
AnchorPoint
Reference points for anchoring widget position.
@ BottomMiddle
Bottom center of widget.
@ TopMiddle
Top center of widget.
@ MiddleRight
Middle right of widget.
@ MiddleLeft
Middle left of widget.
@ BottomRight
Bottom-right of widget.
@ BottomLeft
Bottom-left of widget.
@ Middle
Middle of widget.
@ TopLeft
Top-left of widget.
@ TopRight
Top-right of widget.
void anchorWidgetChanged(QWidget *widget)
Emitted when the anchor widget changes.
QWidget * anchorWidget()
Returns the widget that the floating widget is "anchored" tto.
AnchorPoint anchorPoint() const
Returns the floating widget's anchor point, which corresponds to the point on the widget which should...
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53
record about vertex coordinates and index of anchor to which it is snapped