1 | /* This file is part of the KDE project |
2 | Copyright (C) 2006-2008 Ricardo Villalba <rvm@escomposlinux.org> |
3 | |
4 | This library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) version 3, or any |
8 | later version accepted by the membership of KDE e.V. (or its |
9 | successor approved by the membership of KDE e.V.), Nokia Corporation |
10 | (or its successors, if any) and the KDE Free Qt Foundation, which shall |
11 | act as a proxy defined in Section 6 of version 3 of the license. |
12 | |
13 | This library is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | Lesser General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU Lesser General Public |
19 | License along with this library. If not, see <http://www.gnu.org/licenses/>. |
20 | |
21 | */ |
22 | |
23 | #ifndef SWIFTSLIDER_H |
24 | #define SWIFTSLIDER_H |
25 | |
26 | #include <QSlider> |
27 | #include <QTimer> |
28 | |
29 | #if !defined(QT_NO_PHONON_SEEKSLIDER) && !defined(QT_NO_PHONON_VOLUMESLIDER) |
30 | |
31 | namespace Phonon |
32 | { |
33 | |
34 | /** \class SwiftSlider swiftslider_p.h phonon/SwiftSlider |
35 | * \short Modified QSlider that allows sudden/quick moves instead of stepped moves ("Click'n'Go" QSlider) |
36 | * |
37 | * This is an internal class used by SeekSlider and VolumeSlider. |
38 | * |
39 | * Ricardo Villalba, the original author of MySlider.cpp (from the SMPlayer project) |
40 | * gave his permission for the inclusion of this code inside Phonon by |
41 | * switching MySlider.cpp to the LGPLv2.1+ license. |
42 | * See http://smplayer.svn.sourceforge.net/viewvc/smplayer/smplayer/trunk/src/myslider.cpp?revision=2406&view=markup |
43 | * |
44 | * The original discussion about a "Click'n'Go QSlider": http://lists.trolltech.com/qt-interest/2006-11/msg00363.html |
45 | * |
46 | * \ingroup PhononWidgets |
47 | */ |
48 | class SwiftSlider : public QSlider |
49 | { |
50 | Q_OBJECT |
51 | public: |
52 | SwiftSlider(Qt::Orientation orientation, QWidget * parent); |
53 | ~SwiftSlider() override; |
54 | |
55 | signals: |
56 | void scrollStart(); |
57 | void scrollEnd(); |
58 | |
59 | private: |
60 | void mousePressEvent(QMouseEvent *event) override; |
61 | void wheelEvent(QWheelEvent *event) override; |
62 | inline int pick(const QPoint &pt) const; |
63 | int pixelPosToRangeValue(int pos) const; |
64 | |
65 | QTimer m_wheelTimer; |
66 | }; |
67 | |
68 | } // namespace Phonon |
69 | |
70 | #endif //QT_NO_PHONON_VOLUMESLIDER && QT_NO_PHONON_VOLUMESLIDER |
71 | |
72 | #endif //SWIFTSLIDER_H |
73 | |