1 // vim: set tabstop=4 shiftwidth=4 expandtab:
2 /*
3 Gwenview: an image viewer
4 Copyright 2008 Aurélien Gâteau <agateau@kde.org>
5 
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
10 
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 GNU General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA.
19 
20 */
21 #ifndef WIDGETFLOATER_H
22 #define WIDGETFLOATER_H
23 
24 #include <lib/gwenviewlib_export.h>
25 
26 // Qt
27 #include <QObject>
28 
29 // KF
30 
31 // Local
32 
33 namespace Gwenview
34 {
35 struct WidgetFloaterPrivate;
36 
37 /**
38  * This helper object makes it possible to place a widget (the child) over
39  * another (the parent), ensuring the child remains aligned as specified by
40  * setAlignment() whenever either widget get resized.
41  */
42 class GWENVIEWLIB_EXPORT WidgetFloater : public QObject
43 {
44     Q_OBJECT
45 public:
46     explicit WidgetFloater(QWidget *parent);
47     ~WidgetFloater() override;
48 
49     void setChildWidget(QWidget *);
50 
51     void setAlignment(Qt::Alignment);
52 
53     void setHorizontalMargin(int);
54     int horizontalMargin() const;
55 
56     void setVerticalMargin(int);
57     int verticalMargin() const;
58 
59 protected:
60     bool eventFilter(QObject *, QEvent *) override;
61 
62 private:
63     WidgetFloaterPrivate *const d;
64 };
65 
66 } // namespace
67 
68 #endif /* WIDGETFLOATER_H */
69