class Screenshot

begin¶ ↑

** ** Copyright (C) 2004-2005 Trolltech AS. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** www.trolltech.com/products/qt/opensource.html ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** www.trolltech.com/products/qt/licensing.html or contact the ** sales department at sales@trolltech.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. **

** Translated to QtRuby by Richard Dale

end¶ ↑

Constants

Value

Public Class Methods

new(parent = nil) click to toggle source

Calls superclass method

# File examples/desktop/screenshot/screenshot.rb, line 33
def initialize(parent = nil)
        super(parent)
    @screenshotLabel = Qt::Label.new
    @screenshotLabel.setSizePolicy(Qt::SizePolicy::Expanding,
                                   Qt::SizePolicy::Expanding)
    @screenshotLabel.alignment = Qt::AlignCenter
    @screenshotLabel.setMinimumSize(240, 160)

    createOptionsGroupBox()
    createButtonsLayout()

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

    shootScreen()
    @delaySpinBox.value = 5

    setWindowTitle(tr("Screenshot"))
    resize(300, 200)
end

Public Instance Methods

createButton(text, receiver, member) click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 146
def createButton(text, receiver, member)
    button = Qt::PushButton.new(text)
    button.connect(button, SIGNAL(:clicked), receiver, member)
    return button
end

createButtonsLayout() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 129
def createButtonsLayout()
    @newScreenshotButton = createButton(tr("New Screenshot"),
                                       self, SLOT(:newScreenshot))

    @saveScreenshotButton = createButton(tr("Save Screenshot"),
                                        self, SLOT(:saveScreenshot))

    @quitScreenshotButton = createButton(tr("Quit"), self, SLOT(:close))

  @buttonsLayout = Qt::HBoxLayout.new do |b|
                b.addStretch()
                b.addWidget(@newScreenshotButton)
                b.addWidget(@saveScreenshotButton)
                b.addWidget(@quitScreenshotButton)
        end
end

createOptionsGroupBox() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 109
def createOptionsGroupBox()
    @optionsGroupBox = Qt::GroupBox.new(tr("Options"))

    @delaySpinBox = Qt::SpinBox.new do |s|
       s.suffix = tr(" s")
       s.maximum = 60
       end
    connect(@delaySpinBox, SIGNAL('valueChanged(int)'), self, SLOT(:updateCheckBox))

    @delaySpinBoxLabel = Qt::Label.new(tr("Screenshot Delay:"))

    @hideThisWindowCheckBox = Qt::CheckBox.new(tr("Hide This Window"))

  @optionsGroupBox.layout = Qt::GridLayout.new do |g|
                g.addWidget(@delaySpinBoxLabel, 0, 0)
                g.addWidget(@delaySpinBox, 0, 1)
                g.addWidget(@hideThisWindowCheckBox, 1, 0, 1, 2)
        end
end

newScreenshot() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 66
def newScreenshot()
    if @hideThisWindowCheckBox.checked?
        hide()
end
    @newScreenshotButton.disabled = true

    Qt::Timer.singleShot(@delaySpinBox.value() * 1000, self, SLOT(:shootScreen))
end

resizeEvent(event) click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 57
def resizeEvent(event)
    scaledSize = @originalPixmap.size()
    scaledSize.scale(@screenshotLabel.size(), Qt::KeepAspectRatio)
    if @screenshotLabel.pixmap.nil? ||
            scaledSize != @screenshotLabel.pixmap.size
        updateScreenshotLabel()
end
end

saveScreenshot() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 75
  def saveScreenshot()
      format = "png"
      initialPath = Qt::Dir.currentPath() + tr("/untitled.") + format
  
      fileName = Qt::FileDialog.getSaveFileName(self, tr("Save As"),
                                 initialPath,
                                 tr("%s Files (*.%s);;All Files (*)" % [format.upcase, format]))
      if !fileName.nil?
          @originalPixmap.save(fileName, format)
end
  end

shootScreen() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 87
  def shootScreen()
      if @delaySpinBox.value() != 0
          $qApp.beep
end
Qt::Application.processEvents()
    @originalPixmap = Qt::Pixmap.grabWindow(Qt::Application.desktop.winId)
      updateScreenshotLabel()
  
      @newScreenshotButton.disabled = false
      if @hideThisWindowCheckBox.checked?
          show()
end
  end

updateCheckBox() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 101
  def updateCheckBox()
      if @delaySpinBox.value() == 0
          @hideThisWindowCheckBox.disabled = true
      else
          @hideThisWindowCheckBox.disabled = false
end
  end

updateScreenshotLabel() click to toggle source

# File examples/desktop/screenshot/screenshot.rb, line 152
def updateScreenshotLabel()
    @screenshotLabel.pixmap = @originalPixmap.scaled(@screenshotLabel.size,
                                                     Qt::KeepAspectRatio,
                                                     Qt::SmoothTransformation)
end