src/panels/information/phononwidget.cpp

   1 /*  This file is part of the KDE project
   2     Copyright (C) 2007 Matthias Kretz <kretz@kde.org>
   3
   4     This program is free software; you can redistribute it and/or
   5     modify it under the terms of the GNU General Public License as
   6     published by the Free Software Foundation; either version 2 of
   7     the License, or (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17     02110-1301, USA.
  18
  19 */
  20
  21 #include "phononwidget.h"
  22
  23 #include <Phonon/Global>
  24 #include <Phonon/MediaObject>
  25 #include <Phonon/SeekSlider>
  26 #include <Phonon/VideoPlayer>
  27 #include <QtGui/QVBoxLayout>
  28 #include <QtGui/QHBoxLayout>
  29 #include <QtGui/QShowEvent>
  30 #include <QtGui/QToolButton>
  31 #include <kicon.h>
  32 #include <kurl.h>
  33 #include <klocale.h>
  34
  35 PhononWidget::PhononWidget(QWidget *parent)
  36     : QWidget(parent),
  37     m_mode(Audio),
  38     m_url(),
  39     m_playButton(0),
  40     m_stopButton(0),
  41     m_audioMedia(0),
  42     m_media(0),
  43     m_seekSlider(0),
  44     m_videoPlayer(0)
  45 {
  46 }
  47
  48 void PhononWidget::setUrl(const KUrl &url)
  49 {
  50     if (m_url != url) {
  51         stop(); // emits playingStopped() signal
  52         m_url = url;
  53     }
  54 }
  55
  56 KUrl PhononWidget::url() const
  57 {
  58     return m_url;
  59 }
  60
  61 void PhononWidget::setMode(Mode mode)
  62 {
  63     if (m_mode != mode) {
  64         stop(); // emits playingStopped() signal
  65         m_mode = mode;
  66     }
  67 }
  68
  69 PhononWidget::Mode PhononWidget::mode() const
  70 {
  71     return m_mode;
  72 }
  73
  74 void PhononWidget::showEvent(QShowEvent *event)
  75 {
  76     if (event->spontaneous()) {
  77         QWidget::showEvent(event);
  78         return;
  79     }
  80
  81     if (m_playButton == 0) {
  82         QVBoxLayout *topLayout = new QVBoxLayout(this);
  83         topLayout->setMargin(0);
  84         topLayout->setSpacing(0);
  85         QHBoxLayout *controlsLayout = new QHBoxLayout(this);
  86         controlsLayout->setMargin(0);
  87         controlsLayout->setSpacing(0);
  88
  89         m_playButton = new QToolButton(this);
  90         m_stopButton = new QToolButton(this);
  91         m_seekSlider = new Phonon::SeekSlider(this);
  92         m_videoPlayer = new Phonon::VideoPlayer(Phonon::VideoCategory, this);
  93         m_videoPlayer->hide();
  94
  95         controlsLayout->addWidget(m_playButton);
  96         controlsLayout->addWidget(m_stopButton);
  97         controlsLayout->addWidget(m_seekSlider);
  98
  99         topLayout->addWidget(m_videoPlayer);
 100         topLayout->addLayout(controlsLayout);
 101
 102         m_playButton->setToolTip(i18n("play"));
 103         m_playButton->setIconSize(QSize(16, 16));
 104         m_playButton->setIcon(KIcon("media-playback-start"));
 105         connect(m_playButton, SIGNAL(clicked()), this, SLOT(play()));
 106
 107         m_stopButton->setToolTip(i18n("stop"));
 108         m_stopButton->setIconSize(QSize(16, 16));
 109         m_stopButton->setIcon(KIcon("media-playback-stop"));
 110         m_stopButton->hide();
 111         connect(m_stopButton, SIGNAL(clicked()), this, SLOT(stop()));
 112
 113         m_seekSlider->setIconVisible(false);
 114     }
 115 }
 116
 117 void PhononWidget::hideEvent(QHideEvent *event)
 118 {
 119     QWidget::hideEvent(event);
 120     if (!event->spontaneous()) {
 121         stop();
 122     }
 123 }
 124
 125 void PhononWidget::stateChanged(Phonon::State newstate)
 126 {
 127     setUpdatesEnabled(false);
 128     switch (newstate) {
 129     case Phonon::PlayingState:
 130     case Phonon::BufferingState:
 131         m_stopButton->show();
 132         m_playButton->hide();
 133         break;
 134     default:
 135         m_stopButton->hide();
 136         m_playButton->show();
 137         break;
 138     }
 139     setUpdatesEnabled(true);
 140 }
 141
 142 void PhononWidget::play()
 143 {
 144     switch (m_mode) {
 145     case Audio:
 146         if (m_audioMedia == 0) {
 147             // Creating an audio player might take up to 2 seconds when doing
 148             // it the first time. To prevent that the user interface gets
 149             // noticable blocked, the creation is delayed until the play button
 150             // has been pressed.
 151             m_audioMedia = Phonon::createPlayer(Phonon::MusicCategory, m_url);
 152             m_audioMedia->setParent(this);
 153         }
 154         m_media = m_audioMedia;
 155         m_media->setCurrentSource(m_url);
 156         break;
 157
 158     case Video:
 159         m_videoPlayer->show();
 160         m_videoPlayer->play(m_url);
 161         m_media = m_videoPlayer->mediaObject();
 162         break;
 163
 164     default:
 165         break;
 166     }
 167
 168     Q_ASSERT(m_media != 0);
 169     connect(m_media, SIGNAL(stateChanged(Phonon::State, Phonon::State)),
 170             this, SLOT(stateChanged(Phonon::State)));
 171     m_seekSlider->setMediaObject(m_media);
 172
 173     emit playingStarted();
 174 }
 175
 176 void PhononWidget::stop()
 177 {
 178     if (m_media != 0) {
 179         m_media->stop();
 180         disconnect(m_media, SIGNAL(stateChanged(Phonon::State, Phonon::State)),
 181                    this, SLOT(stateChanged(Phonon::State)));
 182         emit playingStopped();
 183
 184         m_stopButton->hide();
 185         m_playButton->show();
 186     }
 187
 188     if (m_videoPlayer != 0) {
 189         m_videoPlayer->hide();
 190     }
 191 }