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