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0001 /* This file is part of the KDE project 0002 Copyright (C) 2006-2008 Ricardo Villalba <rvm@escomposlinux.org> 0003 0004 This library is free software; you can redistribute it and/or 0005 modify it under the terms of the GNU Lesser General Public 0006 License as published by the Free Software Foundation; either 0007 version 2.1 of the License, or (at your option) version 3, or any 0008 later version accepted by the membership of KDE e.V. (or its 0009 successor approved by the membership of KDE e.V.), Nokia Corporation 0010 (or its successors, if any) and the KDE Free Qt Foundation, which shall 0011 act as a proxy defined in Section 6 of version 3 of the license. 0012 0013 This library is distributed in the hope that it will be useful, 0014 but WITHOUT ANY WARRANTY; without even the implied warranty of 0015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 0016 Lesser General Public License for more details. 0017 0018 You should have received a copy of the GNU Lesser General Public 0019 License along with this library. If not, see <http://www.gnu.org/licenses/>. 0020 0021 */ 0022 0023 #ifndef SWIFTSLIDER_H 0024 #define SWIFTSLIDER_H 0025 0026 #include <QSlider> 0027 #include <QTimer> 0028 0029 #if !defined(QT_NO_PHONON_SEEKSLIDER) && !defined(QT_NO_PHONON_VOLUMESLIDER) 0030 0031 namespace Phonon 0032 { 0033 0034 /** \class SwiftSlider swiftslider_p.h phonon/SwiftSlider 0035 * \short Modified QSlider that allows sudden/quick moves instead of stepped moves ("Click'n'Go" QSlider) 0036 * 0037 * This is an internal class used by SeekSlider and VolumeSlider. 0038 * 0039 * Ricardo Villalba, the original author of MySlider.cpp (from the SMPlayer project) 0040 * gave his permission for the inclusion of this code inside Phonon by 0041 * switching MySlider.cpp to the LGPLv2.1+ license. 0042 * See http://smplayer.svn.sourceforge.net/viewvc/smplayer/smplayer/trunk/src/myslider.cpp?revision=2406&view=markup 0043 * 0044 * The original discussion about a "Click'n'Go QSlider": http://lists.trolltech.com/qt-interest/2006-11/msg00363.html 0045 * 0046 * \ingroup PhononWidgets 0047 */ 0048 class SwiftSlider : public QSlider 0049 { 0050 Q_OBJECT 0051 public: 0052 SwiftSlider(Qt::Orientation orientation, QWidget * parent); 0053 ~SwiftSlider() override; 0054 0055 signals: 0056 void scrollStart(); 0057 void scrollEnd(); 0058 0059 private: 0060 void mousePressEvent(QMouseEvent *event) override; 0061 void wheelEvent(QWheelEvent *event) override; 0062 inline int pick(const QPoint &pt) const; 0063 int pixelPosToRangeValue(int pos) const; 0064 0065 QTimer m_wheelTimer; 0066 }; 0067 0068 } // namespace Phonon 0069 0070 #endif //QT_NO_PHONON_VOLUMESLIDER && QT_NO_PHONON_VOLUMESLIDER 0071 0072 #endif //SWIFTSLIDER_H