File indexing completed on 2025-02-09 05:31:53
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 #include "swiftslider_p.h" 0024 0025 #include <QMouseEvent> 0026 #include <QStyle> 0027 #include <QStyleOption> 0028 0029 #if !defined(QT_NO_PHONON_SEEKSLIDER) && !defined(QT_NO_PHONON_VOLUMESLIDER) 0030 0031 namespace Phonon 0032 { 0033 0034 SwiftSlider::SwiftSlider(Qt::Orientation orientation, QWidget * parent) 0035 : QSlider(orientation, parent) 0036 , m_wheelTimer(this) 0037 { 0038 m_wheelTimer.setInterval(100); 0039 m_wheelTimer.setSingleShot(true); 0040 connect(&m_wheelTimer, SIGNAL(timeout()), this, SIGNAL(scrollEnd())); 0041 } 0042 0043 SwiftSlider::~SwiftSlider() 0044 { 0045 } 0046 0047 // Function copied from qslider.cpp 0048 inline int SwiftSlider::pick(const QPoint &pt) const 0049 { 0050 return orientation() == Qt::Horizontal ? pt.x() : pt.y(); 0051 } 0052 0053 // Function copied from qslider.cpp and modified to make it compile 0054 int SwiftSlider::pixelPosToRangeValue(int pos) const 0055 { 0056 QStyleOptionSlider opt; 0057 initStyleOption(&opt); 0058 QRect gr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderGroove, this); 0059 QRect sr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle, this); 0060 int sliderMin, sliderMax, sliderLength; 0061 0062 if (orientation() == Qt::Horizontal) { 0063 sliderLength = sr.width(); 0064 sliderMin = gr.x(); 0065 sliderMax = gr.right() - sliderLength + 1; 0066 } else { 0067 sliderLength = sr.height(); 0068 sliderMin = gr.y(); 0069 sliderMax = gr.bottom() - sliderLength + 1; 0070 } 0071 return QStyle::sliderValueFromPosition(minimum(), maximum(), pos - sliderMin, 0072 sliderMax - sliderMin, opt.upsideDown); 0073 } 0074 0075 // Based on code from qslider.cpp 0076 void SwiftSlider::mousePressEvent(QMouseEvent *event) 0077 { 0078 if (event->button() == Qt::LeftButton) { 0079 QStyleOptionSlider opt; 0080 initStyleOption(&opt); 0081 const QRect sliderRect = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle, this); 0082 const QPoint center = sliderRect.center() - sliderRect.topLeft(); 0083 // to take half of the slider off for the setSliderPosition call we use the center - topLeft 0084 0085 if (!sliderRect.contains(event->pos())) { 0086 event->accept(); 0087 0088 setSliderPosition(pixelPosToRangeValue(pick(event->pos() - center))); 0089 triggerAction(SliderMove); 0090 setRepeatAction(SliderNoAction); 0091 } else { 0092 QSlider::mousePressEvent(event); 0093 } 0094 } else { 0095 QSlider::mousePressEvent(event); 0096 } 0097 } 0098 0099 void SwiftSlider::wheelEvent(QWheelEvent *event) 0100 { 0101 m_wheelTimer.start(); 0102 QSlider::wheelEvent(event); 0103 } 0104 0105 } // namespace Phonon 0106 0107 #endif //QT_NO_PHONON_VOLUMESLIDER && QT_NO_PHONON_VOLUMESLIDER 0108 0109 #include "moc_swiftslider_p.cpp"