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Add OnLayoutView
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@ -6,6 +6,8 @@
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- Add `Dialog::into_content`.
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- Add `Callback::from_fn_once` and `once1!` macro to wrap a `FnOnce` in a `FnMut`.
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- Add `FixedLayoutView` with manual placement of child views.
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- Add `OnLayoutView` to override `View::Layout`
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### Bugfixes
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@ -79,6 +79,7 @@ mod menu_popup;
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mod menubar;
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mod named_view;
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mod on_event_view;
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mod on_layout_view;
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mod padded_view;
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mod panel;
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mod progress_bar;
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@ -114,6 +115,7 @@ pub use self::menu_popup::MenuPopup;
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pub use self::menubar::Menubar;
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pub use self::named_view::{NamedView, ViewRef};
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pub use self::on_event_view::OnEventView;
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pub use self::on_layout_view::OnLayoutView;
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pub use self::padded_view::PaddedView;
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pub use self::panel::Panel;
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pub use self::progress_bar::ProgressBar;
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59
cursive-core/src/views/on_layout_view.rs
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59
cursive-core/src/views/on_layout_view.rs
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@ -0,0 +1,59 @@
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use crate::{view::ViewWrapper, Vec2, View};
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/// View wrapper overriding the `View::layout` method.
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pub struct OnLayoutView<V> {
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view: V,
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on_layout: Box<dyn FnMut(&mut V, Vec2)>,
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}
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impl<V> OnLayoutView<V> {
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/// Wraps a view in an `OnLayoutView`.
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///
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/// Will run the given closure for layout _instead_ of the one from `view`.
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///
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/// ```rust
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/// use cursive_core::{View, views::{TextView, OnLayoutView}};
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///
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/// let view = TextView::new("foo");
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///
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/// // Here we just run the innver view's layout.
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/// OnLayoutView::new(view, |v, s| v.layout(s));
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/// ```
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pub fn new<F>(view: V, on_layout: F) -> Self
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where
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F: FnMut(&mut V, Vec2) + 'static,
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{
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let on_layout = Box::new(on_layout);
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OnLayoutView { view, on_layout }
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}
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/// Wraps a view in an `OnLayoutView`.
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///
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/// This is a shortcut for `Self::new(view, V::layout)`
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///
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/// You can change it later with `set_on_layout`.
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pub fn wrap(view: V) -> Self
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where
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V: View,
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{
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Self::new(view, V::layout)
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}
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/// Replaces the callback to run.
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pub fn set_on_layout<F>(&mut self, on_layout: F)
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where
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F: FnMut(&mut V, Vec2) + 'static,
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{
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self.on_layout = Box::new(on_layout);
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}
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inner_getters!(self.view: V);
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}
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impl<V: View> ViewWrapper for OnLayoutView<V> {
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wrap_impl!(self.view: V);
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fn wrap_layout(&mut self, size: Vec2) {
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(self.on_layout)(&mut self.view, size);
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}
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}
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