diff options
Diffstat (limited to 'examples/winextras/musicplayer/musicplayer.cpp')
| -rw-r--r-- | examples/winextras/musicplayer/musicplayer.cpp | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/examples/winextras/musicplayer/musicplayer.cpp b/examples/winextras/musicplayer/musicplayer.cpp deleted file mode 100644 index 0f335d2..0000000 --- a/examples/winextras/musicplayer/musicplayer.cpp +++ /dev/null @@ -1,408 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "musicplayer.h" -#include "volumebutton.h" - -#include <QtWidgets> -#include <QtWinExtras> - -MusicPlayer::MusicPlayer(QWidget *parent) : QWidget(parent) -{ - createWidgets(); - createShortcuts(); - createJumpList(); - createTaskbar(); - createThumbnailToolBar(); - - connect(&mediaPlayer, &QMediaPlayer::positionChanged, this, &MusicPlayer::updatePosition); - connect(&mediaPlayer, &QMediaPlayer::durationChanged, this, &MusicPlayer::updateDuration); - connect(&mediaPlayer, &QMediaObject::metaDataAvailableChanged, this, &MusicPlayer::updateInfo); - - connect(&mediaPlayer, QOverload<QMediaPlayer::Error>::of(&QMediaPlayer::error), - this, &MusicPlayer::handleError); - connect(&mediaPlayer, &QMediaPlayer::stateChanged, - this, &MusicPlayer::updateState); - - setAcceptDrops(true); -} - -QStringList MusicPlayer::supportedMimeTypes() -{ - QStringList result = QMediaPlayer::supportedMimeTypes(); - if (result.isEmpty()) - result.append(QStringLiteral("audio/mpeg")); - return result; -} - -void MusicPlayer::openFile() -{ - QFileDialog fileDialog(this); - fileDialog.setAcceptMode(QFileDialog::AcceptOpen); - fileDialog.setWindowTitle(tr("Open File")); - fileDialog.setMimeTypeFilters(MusicPlayer::supportedMimeTypes()); - fileDialog.setDirectory(QStandardPaths::standardLocations(QStandardPaths::MusicLocation).value(0, QDir::homePath())); - if (fileDialog.exec() == QDialog::Accepted) - playUrl(fileDialog.selectedUrls().constFirst()); -} - -void MusicPlayer::playUrl(const QUrl &url) -{ - playButton->setEnabled(true); - if (url.isLocalFile()) { - const QString filePath = url.toLocalFile(); - setWindowFilePath(filePath); - infoLabel->setText(QDir::toNativeSeparators(filePath)); - fileName = QFileInfo(filePath).fileName(); - } else { - setWindowFilePath(QString()); - infoLabel->setText(url.toString()); - fileName.clear(); - } - mediaPlayer.setMedia(url); - mediaPlayer.play(); -} - -void MusicPlayer::togglePlayback() -{ - if (mediaPlayer.mediaStatus() == QMediaPlayer::NoMedia) - openFile(); - else if (mediaPlayer.state() == QMediaPlayer::PlayingState) - mediaPlayer.pause(); - else - mediaPlayer.play(); -} - -void MusicPlayer::seekForward() -{ - positionSlider->triggerAction(QSlider::SliderPageStepAdd); -} - -void MusicPlayer::seekBackward() -{ - positionSlider->triggerAction(QSlider::SliderPageStepSub); -} - -//! [7] -void MusicPlayer::showEvent(QShowEvent *event) -{ - QWidget::showEvent(event); - if (!taskbarButton->window()) { - auto window = windowHandle(); - taskbarButton->setWindow(window); - thumbnailToolBar->setWindow(window); - } -} -//! [7] - -static bool canHandleDrop(const QDropEvent *event) -{ - const auto urls = event->mimeData()->urls(); - if (urls.size() != 1) - return false; - QMimeDatabase mimeDatabase; - return MusicPlayer::supportedMimeTypes(). - contains(mimeDatabase.mimeTypeForUrl(urls.constFirst()).name()); -} - -void MusicPlayer::dragEnterEvent(QDragEnterEvent *event) -{ - event->setAccepted(canHandleDrop(event)); -} - -void MusicPlayer::dropEvent(QDropEvent *event) -{ - event->accept(); - playUrl(event->mimeData()->urls().constFirst()); -} - -void MusicPlayer::mousePressEvent(QMouseEvent *event) -{ - offset = event->globalPos() - pos(); - event->accept(); -} - -void MusicPlayer::mouseMoveEvent(QMouseEvent *event) -{ - move(event->globalPos() - offset); - event->accept(); -} - -void MusicPlayer::mouseReleaseEvent(QMouseEvent *event) -{ - offset = QPoint(); - event->accept(); -} - -void MusicPlayer::updateState(QMediaPlayer::State state) -{ - if (state == QMediaPlayer::PlayingState) { - playButton->setToolTip(tr("Pause")); - playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause)); - } else { - playButton->setToolTip(tr("Play")); - playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); - } -} - -static QString formatTime(qint64 timeMilliSeconds) -{ - qint64 seconds = timeMilliSeconds / 1000; - const qint64 minutes = seconds / 60; - seconds -= minutes * 60; - return QStringLiteral("%1:%2") - .arg(minutes, 2, 10, QLatin1Char('0')) - .arg(seconds, 2, 10, QLatin1Char('0')); -} - -void MusicPlayer::updatePosition(qint64 position) -{ - positionSlider->setValue(position); - positionLabel->setText(formatTime(position)); -} - -void MusicPlayer::updateDuration(qint64 duration) -{ - positionSlider->setRange(0, duration); - positionSlider->setEnabled(duration > 0); - positionSlider->setPageStep(duration / 10); - updateInfo(); -} - -void MusicPlayer::setPosition(int position) -{ - // avoid seeking when the slider value change is triggered from updatePosition() - if (qAbs(mediaPlayer.position() - position) > 99) - mediaPlayer.setPosition(position); -} - -void MusicPlayer::updateInfo() -{ - QStringList info; - if (!fileName.isEmpty()) - info.append(fileName); - if (mediaPlayer.isMetaDataAvailable()) { - QString author = mediaPlayer.metaData(QStringLiteral("Author")).toString(); - if (!author.isEmpty()) - info.append(author); - QString title = mediaPlayer.metaData(QStringLiteral("Title")).toString(); - if (!title.isEmpty()) - info.append(title); - } - info.append(formatTime(mediaPlayer.duration())); - infoLabel->setText(info.join(tr(" - "))); -} - -void MusicPlayer::handleError() -{ - playButton->setEnabled(false); - const QString errorString = mediaPlayer.errorString(); - infoLabel->setText(errorString.isEmpty() - ? tr("Unknown error #%1").arg(int(mediaPlayer.error())) - : tr("Error: %1").arg(errorString)); -} - -//! [2] -void MusicPlayer::updateTaskbar() -{ - switch (mediaPlayer.state()) { - case QMediaPlayer::PlayingState: - taskbarButton->setOverlayIcon(style()->standardIcon(QStyle::SP_MediaPlay)); - taskbarProgress->show(); - taskbarProgress->resume(); - break; - case QMediaPlayer::PausedState: - taskbarButton->setOverlayIcon(style()->standardIcon(QStyle::SP_MediaPause)); - taskbarProgress->show(); - taskbarProgress->pause(); - break; - case QMediaPlayer::StoppedState: - taskbarButton->setOverlayIcon(style()->standardIcon(QStyle::SP_MediaStop)); - taskbarProgress->hide(); - break; - } -} -//! [2] - -//! [3] -void MusicPlayer::updateThumbnailToolBar() -{ - playToolButton->setEnabled(mediaPlayer.duration() > 0); - backwardToolButton->setEnabled(mediaPlayer.position() > 0); - forwardToolButton->setEnabled(mediaPlayer.position() < mediaPlayer.duration()); - - if (mediaPlayer.state() == QMediaPlayer::PlayingState) { - playToolButton->setToolTip(tr("Pause")); - playToolButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause)); - } else { - playToolButton->setToolTip(tr("Play")); - playToolButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); - } -} -//! [3] - -void MusicPlayer::createWidgets() -{ - playButton = new QToolButton(this); - playButton->setEnabled(false); - playButton->setToolTip(tr("Play")); - playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); - connect(playButton, &QAbstractButton::clicked, this, &MusicPlayer::togglePlayback); - - QAbstractButton *openButton = new QToolButton(this); - openButton->setText(tr("...")); - openButton->setToolTip(tr("Open a file...")); - openButton->setFixedSize(playButton->sizeHint()); - connect(openButton, &QAbstractButton::clicked, this, &MusicPlayer::openFile); - - volumeButton = new VolumeButton(this); - volumeButton->setToolTip(tr("Adjust volume")); - volumeButton->setVolume(mediaPlayer.volume()); - connect(volumeButton, &VolumeButton::volumeChanged, &mediaPlayer, &QMediaPlayer::setVolume); - - positionSlider = new QSlider(Qt::Horizontal, this); - positionSlider->setEnabled(false); - positionSlider->setToolTip(tr("Seek")); - connect(positionSlider, &QAbstractSlider::valueChanged, this, &MusicPlayer::setPosition); - - infoLabel = new QLabel(this); - positionLabel = new QLabel(tr("00:00"), this); - positionLabel->setMinimumWidth(positionLabel->sizeHint().width()); - - QBoxLayout *controlLayout = new QHBoxLayout; - controlLayout->setMargin(0); - controlLayout->addWidget(openButton); - controlLayout->addWidget(playButton); - controlLayout->addWidget(positionSlider); - controlLayout->addWidget(positionLabel); - controlLayout->addWidget(volumeButton); - - QBoxLayout *mainLayout = new QVBoxLayout(this); - mainLayout->addWidget(infoLabel); - mainLayout->addLayout(controlLayout); -} - -void MusicPlayer::createShortcuts() -{ - QShortcut *quitShortcut = new QShortcut(QKeySequence::Quit, this); - connect(quitShortcut, &QShortcut::activated, QCoreApplication::quit); - - QShortcut *openShortcut = new QShortcut(QKeySequence::Open, this); - connect(openShortcut, &QShortcut::activated, this, &MusicPlayer::openFile); - - QShortcut *toggleShortcut = new QShortcut(Qt::Key_Space, this); - connect(toggleShortcut, &QShortcut::activated, this, &MusicPlayer::togglePlayback); - - QShortcut *forwardShortcut = new QShortcut(Qt::Key_Right, this); - connect(forwardShortcut, &QShortcut::activated, this, &MusicPlayer::seekForward); - - QShortcut *backwardShortcut = new QShortcut(Qt::Key_Left, this); - connect(backwardShortcut, &QShortcut::activated, this, &MusicPlayer::seekBackward); - - QShortcut *increaseShortcut = new QShortcut(Qt::Key_Up, this); - connect(increaseShortcut, &QShortcut::activated, volumeButton, &VolumeButton::increaseVolume); - - QShortcut *decreaseShortcut = new QShortcut(Qt::Key_Down, this); - connect(decreaseShortcut, &QShortcut::activated, volumeButton, &VolumeButton::descreaseVolume); -} - -//! [4] -void MusicPlayer::createJumpList() -{ - QWinJumpList jumplist; - jumplist.recent()->setVisible(true); -} -//! [4] - -//! [5] -void MusicPlayer::createTaskbar() -{ - taskbarButton = new QWinTaskbarButton(this); - - taskbarProgress = taskbarButton->progress(); - connect(positionSlider, &QAbstractSlider::valueChanged, taskbarProgress, &QWinTaskbarProgress::setValue); - connect(positionSlider, &QAbstractSlider::rangeChanged, taskbarProgress, &QWinTaskbarProgress::setRange); - - connect(&mediaPlayer, &QMediaPlayer::stateChanged, this, &MusicPlayer::updateTaskbar); -} -//! [5] - -//! [6] -void MusicPlayer::createThumbnailToolBar() -{ - thumbnailToolBar = new QWinThumbnailToolBar(this); - - playToolButton = new QWinThumbnailToolButton(thumbnailToolBar); - playToolButton->setEnabled(false); - playToolButton->setToolTip(tr("Play")); - playToolButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); - connect(playToolButton, &QWinThumbnailToolButton::clicked, this, &MusicPlayer::togglePlayback); - - forwardToolButton = new QWinThumbnailToolButton(thumbnailToolBar); - forwardToolButton->setEnabled(false); - forwardToolButton->setToolTip(tr("Fast forward")); - forwardToolButton->setIcon(style()->standardIcon(QStyle::SP_MediaSeekForward)); - connect(forwardToolButton, &QWinThumbnailToolButton::clicked, this, &MusicPlayer::seekForward); - - backwardToolButton = new QWinThumbnailToolButton(thumbnailToolBar); - backwardToolButton->setEnabled(false); - backwardToolButton->setToolTip(tr("Rewind")); - backwardToolButton->setIcon(style()->standardIcon(QStyle::SP_MediaSeekBackward)); - connect(backwardToolButton, &QWinThumbnailToolButton::clicked, this, &MusicPlayer::seekBackward); - - thumbnailToolBar->addButton(backwardToolButton); - thumbnailToolBar->addButton(playToolButton); - thumbnailToolBar->addButton(forwardToolButton); - - connect(&mediaPlayer, &QMediaPlayer::positionChanged, this, &MusicPlayer::updateThumbnailToolBar); - connect(&mediaPlayer, &QMediaPlayer::durationChanged, this, &MusicPlayer::updateThumbnailToolBar); - connect(&mediaPlayer, &QMediaPlayer::stateChanged, this, &MusicPlayer::updateThumbnailToolBar); -} -//! [6] |