# enaml.widgets.stack

Classes

`Transition` | An object representing an animated transition.
`Stack` | A component which displays its children as a stack of widgets, only one of which is visible at a time.

class enaml.widgets.stack.Transition

  Bases: `Atom`

  An object representing an animated transition.

  Once a transition is created, it should be considered read-only.

  type

    The type of transition effect to use.

  direction

    The direction of the transition effect. Some transition types will ignore the direction if it doesn’t apply to the effect.

  duration

    The duration of the transition, in milliseconds.

class enaml.widgets.stack.Stack(parent=None, **kwargs)

  Bases: `ConstraintsWidget`

  A component which displays its children as a stack of widgets, only one of which is visible at a time.

  index

    The index of the visible widget in the stack. The widget itself does not provide a means to changing this index. That control must be supplied externally. If the given index falls outside of the range of stack items, no widget will be visible.

  transition

    The item transition to use when changing between stack items.

  size_hint_mode

    The size hint mode for the stack. The default is ‘union’ and means that the size hint of the stack is the union of all the stack item size hints. ‘current’ means the size hint of the stack will be the size hint of the current stack item.

  hug_width

    A Stack expands freely in height and width by default

  hug_height

    How strongly a widget hugs it’s height hint. This is equivalent to the constraint:

        (height == hint) | hug_height

  proxy

    A reference to the ProxyStack widget.

  stack_items()

    Get the stack items defined on the stack

  activated

    An event fired when an object’s proxy is activated. It is triggered once during the object lifetime, at the end of the activate_proxy method.

  background

    The background color of the widget.

  destroyed

    An event fired when an object has been destroyed. It is triggered once during the object lifetime, just before the object is removed from the tree structure.

  enabled

    Whether or not the widget is enabled.

  initialized

    An event fired when an object is initialized. It is triggered once during the object lifetime, at the end of the initialize method.

  name

    Export the ‘name’ attribute as a declarative member.

  style_class

    The style class to which this item belongs. Multiple classes can be separated with whitespace. An empty string indicates the widget does not belong to any style class.