Class: MoviePlayer

Inherits:
Qt::Widget show all
Defined in:
ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb

Instance Method Summary collapse

Methods inherited from Qt::Widget

#raise

Methods inherited from Qt::Base

#%, #&, #*, #**, #+, #-, #-@, #/, #<, #<<, #<=, #==, #>, #>=, #>>, #QCOMPARE, #QEXPECT_FAIL, #QFAIL, #QSKIP, #QTEST, #QVERIFY, #QVERIFY2, #QWARN, #^, ancestors, #is_a?, #methods, private_slots, #protected_methods, #public_methods, q_classinfo, q_signal, q_slot, signals, #singleton_methods, slots, #|, #~

Constructor Details

#initialize(parent = nil) ⇒ MoviePlayer

Returns a new instance of MoviePlayer.



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 36

def initialize(parent = nil)
    super(parent)
    @movie = Qt::Movie.new(self)
    @movie.cacheMode = Qt::Movie::CacheAll

    @movieLabel = Qt::Label.new(tr("No movie loaded")) do |m|
        m.alignment = Qt::AlignCenter
        m.setSizePolicy(Qt::SizePolicy::Ignored, Qt::SizePolicy::Ignored)
        m.backgroundRole = Qt::Palette::Dark
        m.autoFillBackground = true
    end

    @currentMovieDirectory = "@movies"

    createControls()
    createButtons()

    connect(@movie, SIGNAL('frameChanged(int)'), self, SLOT('updateFrameSlider()'))
    connect(@movie, SIGNAL('stateChanged(QMovie::MovieState)'),
            self, SLOT('updateButtons()'))
    connect(@fitCheckBox, SIGNAL('clicked()'), self, SLOT('fitToWindow()'))
    connect(@frameSlider, SIGNAL('valueChanged(int)'), self, SLOT('goToFrame(int)'))
    connect(@speedSpinBox, SIGNAL('valueChanged(int)'),
            @movie, SLOT('setSpeed(int)'))

    self.layout = Qt::VBoxLayout.new do |m|
        m.addWidget(@movieLabel)
        m.addLayout(@controlsLayout)
        m.addLayout(@buttonsLayout)
    end

    updateFrameSlider()
    updateButtons()

    setWindowTitle(tr("Movie Player"))
    resize(400, 400)
end

Instance Method Details

#createButtons ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 152

def createButtons()
    iconSize = Qt::Size.new(36, 36)

    @openButton = Qt::ToolButton.new do |o|
        o.icon = Qt::Icon.new("images/open.png")
        o.iconSize = iconSize
        o.toolTip = tr("Open File")
    end
    connect(@openButton, SIGNAL('clicked()'), self, SLOT('open()'))

    @playButton = Qt::ToolButton.new do |p|
        p.icon = Qt::Icon.new("images/play.png")
        p.iconSize = iconSize
        p.toolTip = tr("Play")
    end
    connect(@playButton, SIGNAL('clicked()'), @movie, SLOT('start()'))

    @pauseButton = Qt::ToolButton.new do |p|
        p.checkable = true
        p.icon = Qt::Icon.new("images/pause.png")
        p.iconSize = iconSize
        p.toolTip = tr("Pause")
    end
    connect(@pauseButton, SIGNAL('clicked(bool)'), @movie, SLOT('setPaused(bool)'))

    @stopButton = Qt::ToolButton.new do |s|
        s.icon = Qt::Icon.new("images/stop.png")
        s.iconSize = iconSize
        s.toolTip = tr("Stop")
    end
    connect(@stopButton, SIGNAL('clicked()'), @movie, SLOT('stop()'))

    @quitButton = Qt::ToolButton.new do |q|
        q.icon = Qt::Icon.new("images/quit.png")
        q.iconSize = iconSize
        q.toolTip = tr("Quit")
    end
    connect(@quitButton, SIGNAL('clicked()'), self, SLOT('close()'))

    @buttonsLayout = Qt::HBoxLayout.new do |b|
        b.addStretch()
        b.addWidget(@openButton)
        b.addWidget(@playButton)
        b.addWidget(@pauseButton)
        b.addWidget(@stopButton)
        b.addWidget(@quitButton)
        b.addStretch()
    end
end

#createControls ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 125

def createControls()
    @fitCheckBox = Qt::CheckBox.new(tr("Fit to Window"))

    @frameLabel = Qt::Label.new(tr("Current frame:"))

    @frameSlider = Qt::Slider.new(Qt::Horizontal) do |f|
        f.tickPosition = Qt::Slider::TicksBelow
        f.tickInterval = 10
    end

    @speedLabel = Qt::Label.new(tr("Speed:"))

    @speedSpinBox = Qt::SpinBox.new do |s|
        s.range = 1..9999
        s.value = 100
        s.suffix = tr("%")
    end

    @controlsLayout = Qt::GridLayout.new do |c|
        c.addWidget(@fitCheckBox, 0, 0, 1, 2)
        c.addWidget(@frameLabel, 1, 0)
        c.addWidget(@frameSlider, 1, 1, 1, 2)
        c.addWidget(@speedLabel, 2, 0)
        c.addWidget(@speedSpinBox, 2, 1)
    end
end

#fitToWindow ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 94

def fitToWindow()
    @movieLabel.scaledContents = @fitCheckBox.checked?
end

#goToFrame(frame) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 90

def goToFrame(frame)
    @movie.jumpToFrame(frame)
end

#open ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 74

def open()
    fileName = Qt::FileDialog.getOpenFileName(self, tr("Open a Movie"),
                               @currentMovieDirectory)
    if !fileName.empty?
        @currentMovieDirectory = Qt::FileInfo.new(fileName).path()

        @movie.stop()
        @movieLabel.movie = @movie
        @movie.fileName = fileName
        @movie.start()

        updateFrameSlider()
        updateButtons()
    end
end

#updateButtons ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 117

def updateButtons()
    @playButton.enabled = @movie.valid? && @movie.frameCount != 1 &&
                           @movie.state == Qt::Movie::NotRunning
    @pauseButton.enabled = @movie.state != Qt::Movie::NotRunning
    @pauseButton.checked = @movie.state == Qt::Movie::Paused
    @stopButton.enabled = @movie.state != Qt::Movie::NotRunning
end

#updateFrameSlider ⇒ Object 



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# File 'ext/ruby/qtruby/examples/widgets/movie/movieplayer.rb', line 98

def updateFrameSlider()
    hasFrames = (@movie.currentFrameNumber() >= 0)

    if hasFrames
        if @movie.frameCount > 0
            @frameSlider.maximum = @movie.frameCount - 1
        else
            if @movie.currentFrameNumber > @frameSlider.maximum
                @frameSlider.maximum = @movie.currentFrameNumber
            end
        end
        @frameSlider.value = @movie.currentFrameNumber
    else
        @frameSlider.maximum = 0
    end
    @frameLabel.enabled = hasFrames
    @frameSlider.enabled = hasFrames
end