10.8. Viewports

It is unlikely that you will ever need to use the Viewport widget directly. You are much more likely to use the Scrolled Window widget which itself uses the Viewport.

A viewport widget allows you to place a larger widget within it such that you can view a part of it at a time. It uses Adjustments to define the area that is currently in view.

A Viewport is created with the function
 
viewport = GtkViewport(hadjustment, vadjustment)

As you can see you can specify the horizontal and vertical Adjustments that the widget is to use when you create the widget. It will create its own if you pass None as the value of the arguments or pass no arguments.

You can get and set the adjustments after the widget has been created using the following four methods:
 
viewport.get_hadjustment()

viewport.get_vadjustment()

viewport.set_hadjustment(adjustment)

viewport.set_vadjustment(adjustment)

The only other viewport method is used to alter its appearance:
 
viewport.set_shadow_type(type)

Possible values for the type parameter are:
 
  SHADOW_NONE,
  SHADOW_IN,
  SHADOW_OUT,
  SHADOW_ETCHED_IN,
  SHADOW_ETCHED_OUT