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/AudioOutput>
  24 #include <Phonon/Global>
  25 #include <Phonon/MediaObject>
  26 #include <Phonon/SeekSlider>
  27 #include <Phonon/VideoWidget>
  28
  29 #include <QVBoxLayout>
  30 #include <QHBoxLayout>
  31 #include <QShowEvent>
  32 #include <QToolButton>
  33 #include <QDialog>
  34 #include <QIcon>
  35 #include <KIconLoader>
  36 #include <QUrl>
  37 #include <KLocalizedString>
  38
  39 class EmbeddedVideoPlayer : public Phonon::VideoWidget
  40 {
  41     Q_OBJECT
  42
  43     public:
  44         EmbeddedVideoPlayer(QWidget *parent = 0) :
  45             Phonon::VideoWidget(parent)
  46         {
  47         }
  48
  49         void setSizeHint(const QSize& size)
  50         {
  51             m_sizeHint = size;
  52             updateGeometry();
  53         }
  54
  55         QSize sizeHint() const Q_DECL_OVERRIDE
  56         {
  57             return m_sizeHint.isValid() ? m_sizeHint : Phonon::VideoWidget::sizeHint();
  58         }
  59
  60     private:
  61         QSize m_sizeHint;
  62 };
  63
  64 PhononWidget::PhononWidget(QWidget *parent)
  65     : QWidget(parent),
  66     m_url(),
  67     m_playButton(0),
  68     m_stopButton(0),
  69     m_topLayout(0),
  70     m_media(0),
  71     m_seekSlider(0),
  72     m_audioOutput(0),
  73     m_videoPlayer(0)
  74 {
  75 }
  76
  77 void PhononWidget::setUrl(const QUrl &url)
  78 {
  79     if (m_url != url) {
  80         stop(); // emits playingStopped() signal
  81         m_url = url;
  82     }
  83 }
  84
  85 QUrl PhononWidget::url() const
  86 {
  87     return m_url;
  88 }
  89
  90 void PhononWidget::setVideoSize(const QSize& size)
  91 {
  92     if (m_videoSize != size) {
  93         m_videoSize = size;
  94         applyVideoSize();
  95     }
  96 }
  97
  98 QSize PhononWidget::videoSize() const
  99 {
 100     return m_videoSize;
 101 }
 102
 103 void PhononWidget::showEvent(QShowEvent *event)
 104 {
 105     if (event->spontaneous()) {
 106         QWidget::showEvent(event);
 107         return;
 108     }
 109
 110     if (!m_topLayout) {
 111         m_topLayout = new QVBoxLayout(this);
 112         m_topLayout->setMargin(0);
 113
 114         QHBoxLayout *controlsLayout = new QHBoxLayout(this);
 115         controlsLayout->setMargin(0);
 116         controlsLayout->setSpacing(0);
 117
 118         m_playButton = new QToolButton(this);
 119         m_stopButton = new QToolButton(this);
 120         m_seekSlider = new Phonon::SeekSlider(this);
 121
 122         controlsLayout->addWidget(m_playButton);
 123         controlsLayout->addWidget(m_stopButton);
 124         controlsLayout->addWidget(m_seekSlider);
 125
 126         m_topLayout->addLayout(controlsLayout);
 127
 128         const int smallIconSize = IconSize(KIconLoader::Small);
 129         const QSize buttonSize(smallIconSize, smallIconSize);
 130
 131         m_playButton->setToolTip(i18n("play"));
 132         m_playButton->setIconSize(buttonSize);
 133         m_playButton->setIcon(QIcon::fromTheme(QStringLiteral("media-playback-start")));
 134         m_playButton->setAutoRaise(true);
 135         connect(m_playButton, &QToolButton::clicked, this, &PhononWidget::play);
 136
 137         m_stopButton->setToolTip(i18n("stop"));
 138         m_stopButton->setIconSize(buttonSize);
 139         m_stopButton->setIcon(QIcon::fromTheme(QStringLiteral("media-playback-stop")));
 140         m_stopButton->setAutoRaise(true);
 141         m_stopButton->hide();
 142         connect(m_stopButton, &QToolButton::clicked, this, &PhononWidget::stop);
 143
 144         m_seekSlider->setIconVisible(false);
 145
 146         // Creating an audio player or video player instance might take up to
 147         // 2 seconds when doing it the first time. To prevent that the user
 148         // interface gets noticeable blocked, the creation is delayed until
 149         // the play button has been pressed (see PhononWidget::play()).
 150     }
 151 }
 152
 153 void PhononWidget::hideEvent(QHideEvent *event)
 154 {
 155     QWidget::hideEvent(event);
 156     if (!event->spontaneous()) {
 157         stop();
 158     }
 159 }
 160
 161 void PhononWidget::stateChanged(Phonon::State newstate)
 162 {
 163     setUpdatesEnabled(false);
 164     switch (newstate) {
 165     case Phonon::PlayingState:
 166     case Phonon::BufferingState:
 167         m_stopButton->show();
 168         m_playButton->hide();
 169         break;
 170     case Phonon::StoppedState:
 171         if (m_videoPlayer) {
 172             m_videoPlayer->hide();
 173         }
 174         emit hasVideoChanged(false);
 175         // fall through
 176     default:
 177         m_stopButton->hide();
 178         m_playButton->show();
 179         break;
 180     }
 181     setUpdatesEnabled(true);
 182 }
 183
 184 void PhononWidget::play()
 185 {
 186     if (!m_media) {
 187         m_media = new Phonon::MediaObject(this);
 188         connect(m_media, &Phonon::MediaObject::stateChanged,
 189                 this, &PhononWidget::stateChanged);
 190         connect(m_media, &Phonon::MediaObject::hasVideoChanged,
 191                 this, &PhononWidget::slotHasVideoChanged);
 192         m_seekSlider->setMediaObject(m_media);
 193     }
 194
 195     if (!m_videoPlayer) {
 196         m_videoPlayer = new EmbeddedVideoPlayer(this);
 197         m_topLayout->insertWidget(0, m_videoPlayer);
 198         Phonon::createPath(m_media, m_videoPlayer);
 199         applyVideoSize();
 200     }
 201
 202     if (!m_audioOutput) {
 203         m_audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
 204         Phonon::createPath(m_media, m_audioOutput);
 205     }
 206
 207     emit hasVideoChanged(false);
 208
 209     m_media->setCurrentSource(m_url);
 210     m_media->hasVideo();
 211     m_media->play();
 212 }
 213
 214 void PhononWidget::stop()
 215 {
 216     if (m_media) {
 217         m_media->stop();
 218     }
 219 }
 220
 221 void PhononWidget::slotHasVideoChanged(bool hasVideo)
 222 {
 223     emit hasVideoChanged(hasVideo);
 224
 225     if (hasVideo) {
 226         m_videoPlayer->show();
 227     }
 228 }
 229
 230 void PhononWidget::applyVideoSize()
 231 {
 232     if ((m_videoPlayer) && m_videoSize.isValid()) {
 233         m_videoPlayer->setSizeHint(m_videoSize);
 234     }
 235 }
 236
 237 #include "phononwidget.moc"