Visibility

zng::widget

Enum Visibility 

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pub enum Visibility {
    Visible,
    Hidden,
    Collapsed,
}
Expand description

Widget visibility.

The visibility state of a widget is computed from its bounds in the last layout and if it rendered anything, the visibility of a parent widget affects all descendant widgets, you can inspect the visibility using the WidgetInfo::visibility method.

You can also explicitly hide or collapse a widget using the visibility property.

Variants§

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Visible

The widget is visible.

This is also the default state, before the first layout and render.

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Hidden

The widget is not visible, but still affects layout.

Hidden widgets reserve space in their parent but do not render.

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Collapsed

The widget is not visible and does not affect layout.

Collapsed widgets always measure to zero and do not render.

Implementations§

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impl Visibility

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pub fn is_visible(self) -> bool

Is visible.

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pub fn is_hidden(self) -> bool

Is hidden.

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pub fn is_collapsed(self) -> bool

Is collapsed.

Trait Implementations§

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impl BitOr for Visibility

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fn bitor(self, rhs: Visibility) -> <Visibility as BitOr>::Output

Collapsed | Hidden | Visible short circuit from left to right.

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type Output = Visibility

The resulting type after applying the | operator.
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impl BitOrAssign for Visibility

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fn bitor_assign(&mut self, rhs: Visibility)

Performs the |= operation. Read more
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impl Clone for Visibility

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fn clone(&self) -> Visibility

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Visibility

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for Visibility

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fn default() -> Visibility

Visibility::Visible

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impl<'de> Deserialize<'de> for Visibility

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fn deserialize<__D>( __deserializer: __D, ) -> Result<Visibility, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl From<bool> for Visibility

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fn from(visible: bool) -> Visibility

  • true -> Visible
  • false -> Collapsed
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impl IntoVar<Visibility> for bool

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fn into_var(self) -> Var<Visibility>

  • true -> Visible
  • false -> Collapsed
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impl PartialEq for Visibility

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fn eq(&self, other: &Visibility) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for Visibility

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fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for Visibility

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impl Eq for Visibility

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impl IntoValue<Visibility> for bool

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impl StructuralPartialEq for Visibility

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