Windows-4.7.4/tools/designer/src/plugins/phononwidgets/videoplayertaskmenu.cpp

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#include "videoplayertaskmenu.h"

#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormWindowCursorInterface>
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QExtensionManager>

#include <phonon/videoplayer.h>
#include <phonon/mediaobject.h>

#include <QtGui/QPlainTextEdit>
#include <QtGui/QDialogButtonBox>
#include <QtGui/QAction>
#include <QtGui/QVBoxLayout>
#include <QtGui/QFileDialog>
#include <QtGui/QMessageBox>

QT_BEGIN_NAMESPACE

// -----------------  MimeTypeDialog: Display mime types in scrollable text

class MimeTypeDialog : public QDialog {
    Q_DISABLE_COPY(MimeTypeDialog)
public:
    explicit MimeTypeDialog(QWidget *parent = 0);

    void setMimeTypes(const QStringList &);

private:
    QPlainTextEdit *m_plainTextEdit;
};

MimeTypeDialog::MimeTypeDialog(QWidget *parent) :
    QDialog(parent),
    m_plainTextEdit(new QPlainTextEdit)
{
    setModal(true);
    setWindowTitle(VideoPlayerTaskMenu::tr("Available Mime Types"));
    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);

    QVBoxLayout *layout = new QVBoxLayout;
    m_plainTextEdit->setReadOnly(true);
    layout->addWidget(m_plainTextEdit);

    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok);
    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
    layout->addWidget(buttonBox);

    setLayout(layout);
}

void MimeTypeDialog::setMimeTypes(const QStringList &l)
{
    m_plainTextEdit->setPlainText(l.join(QString(1, QLatin1Char('\n'))));
}

// ----------------- VideoPlayerTaskMenu
VideoPlayerTaskMenu::VideoPlayerTaskMenu(Phonon::VideoPlayer *object, QObject *parent) :
    QObject(parent),
    m_widget(object),
    m_displayMimeTypesAction(new QAction(tr("Display supported mime types..."), this)),
    m_loadAction(new QAction(tr("Load..."), this)),
    m_playAction(new QAction(tr("Play"), this)),
    m_pauseAction(new QAction(tr("Pause"), this)),
    m_stopAction(new QAction(tr("Stop"), this))
{
    m_taskActions << m_displayMimeTypesAction << m_loadAction << m_playAction << m_pauseAction << m_stopAction;

    connect(m_widget->mediaObject(), SIGNAL(stateChanged(Phonon::State,Phonon::State)), this, SLOT(mediaObjectStateChanged(Phonon::State,Phonon::State)));
    connect(m_displayMimeTypesAction, SIGNAL(triggered()), this, SLOT(slotMimeTypes()));
    connect(m_loadAction, SIGNAL(triggered()), this, SLOT(slotLoad()));
    connect(m_playAction, SIGNAL(triggered()), object, SLOT(play()));
    connect(m_pauseAction, SIGNAL(triggered()), object, SLOT(pause()));
    connect(m_stopAction, SIGNAL(triggered()), object, SLOT(stop()));
}

QList<QAction*> VideoPlayerTaskMenu::taskActions() const
{
    const bool isPlaying = m_widget->isPlaying();
    const bool isPaused = m_widget->isPlaying();
    m_loadAction->setEnabled(!isPlaying && !isPaused);
    m_playAction->setEnabled(!isPlaying);
    m_pauseAction->setEnabled(isPlaying);
    m_stopAction->setEnabled(isPlaying || isPaused);
    return m_taskActions;
}

void VideoPlayerTaskMenu::slotMimeTypes()
{
    MimeTypeDialog mimeTypeDialog(m_widget->window());
    mimeTypeDialog.setMimeTypes(Phonon::BackendCapabilities::availableMimeTypes());
    mimeTypeDialog.exec();
}

void VideoPlayerTaskMenu::slotLoad()
{
    const QString fileName = QFileDialog::getOpenFileName(m_widget->window(), tr("Choose Video Player Media Source"));
    if (fileName.isEmpty())
        return;
    m_widget->load(Phonon::MediaSource(fileName));

}

void VideoPlayerTaskMenu::mediaObjectStateChanged(Phonon::State newstate, Phonon::State /* oldstate */)
{
    if (newstate == Phonon::ErrorState) {
        const QString msg = tr("An error has occurred in '%1': %2").arg(m_widget->objectName(), m_widget->mediaObject()->errorString());
        QMessageBox::warning(m_widget->window(), tr("Video Player Error"), msg);
    }
}

QT_END_NAMESPACE