Extraction as image

edited July 2015 in KLayout Support
Hello all,

Is it possible to extract my entire layout (or part of it) as an image?


Thank you very much,
Shoval

Comments

  • edited July 2015

    Pasting Matthias's code with a few modifications below:

    (Note: this modified version is also found in E4K inside E4K > Examples menu > Qt > Screenshot)

    ## Qt and screenshot.lym
    ## By Matthias, http://www.klayout.de/rba_examples.html
    ## 
    ## Example of how to do a Qt dialog and how to take a screenshot.
    
    module MyMacro
    
      include RBA
    
      # This class implements a dialog with a screenshot display area and a
      # screenshot button
      class ScreenshotDialog < QDialog
    
        include RBA
    
        def initialize(parent = nil)
    
          super
    
          setWindowTitle("Screenshot Saver")
    
          resize(400, 120)
    
          layout = QVBoxLayout.new(self)
          setLayout(layout)
    
          @image = QLabel.new("Press the button to fetch a screenshot", self)
          layout.addWidget(@image)
    
          button = QPushButton.new('Screenshot', self)
          button.setFont(QFont.new('Times', 18, QFont::Bold))
          layout.addWidget(button)
    
          button.clicked do
            view = Application.instance.main_window.current_view
            if view
              @image.setPixmap(QPixmap::fromImage(view.get_image(400, 400)))
            else
              @image.setText("No layout opened to take screenshot from")
            end
          end
    
        end
    
      end
    
      # Instantiate the dialog and make it visible initially.
      # Passing the $main_window will make it stay on top of the main window.
      $dialog && $dialog.destroy
      $dialog = ScreenshotDialog.new(Application::instance.main_window)
      $dialog.show
    
    end
    

    Is that something like what you wanted? Of course you can modify it, e.g. to save to a file instead of display it, if you prefer. You said 'entire layout' -- one way is to call LayoutView#zoom_fit before taking the screenshot, it will zoom to the entire layout.

    Try to modify it for your needs. If you need help on a more specific implementation, please let us know.

    David

  • edited 7:55AM
    Hello David,

    Thanks for the quick answer!
    Your code allows me to take a screenshot of the current view, and layoutView helps me zoom out to see everything - but this is not quite what I was looking for.

    The layout itself is quite big and complex, and what I want is to get all the entire block AND all the details within it. To see the details well I need to zoom in until I can see lines 5um apart, and to see the entire block I need to see 1cm apart.

    A good picture for what I wish for would be probably huge in size.

    Thanks for your help,
    Shoval.
  • edited July 2015

    Hi Shoval,

    @David: thanks for mentioning this solution!

    A lean solution capable of producing big images is the screenshot script: http://www.klayout.de/useful_scripts.html#screenshot.lym.

    If you're on a 64bit system, you can produce images of up to 500M pixels (width x height). There is a limitation in Qt's image writer implementation that prevents creating bigger images. 500M pixels will correspond to about 22k x 22k pixels for a square image.

    Still with this limit you are able to resolve less than 500nm on a 10mm block. You'll just need enough memory (>= 8G) and a 64bit system.

    Matthias

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