[−][src]Struct cursive_core::views::Canvas
A blank view that forwards calls to closures.
You can use this view to easily draw your own interface.
Examples
use cursive_core::event::{Event, EventResult, Key}; use cursive_core::views::{Canvas, Dialog}; use unicode_width::UnicodeWidthStr; // To get the width of some text. // Build a canvas around a string. let state = String::new(); let canvas = Canvas::new(state) .with_draw(|text: &String, printer| { // Simply print our string printer.print((0, 0), text); }) .with_on_event(|text: &mut String, event| match event { Event::Char(c) => { text.push(c); EventResult::Consumed(None) } Event::Key(Key::Enter) => { let text = text.clone(); EventResult::with_cb(move |s| { s.add_layer(Dialog::info(&text)); }) } _ => EventResult::Ignored, }) .with_required_size(|text, _constraints| (text.width(), 1).into());
Implementations
impl<T: 'static + View> Canvas<T>
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pub fn wrap(view: T) -> Self
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Creates a new Canvas around the given view.
By default, forwards all calls to the inner view.
impl<T> Canvas<T>
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pub fn new(state: T) -> Self
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Creates a new, empty Canvas.
pub fn state_mut(&mut self) -> &mut T
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Gets a mutable reference to the inner state.
pub fn set_draw<F>(&mut self, f: F) where
F: 'static + Fn(&T, &Printer<'_, '_>),
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F: 'static + Fn(&T, &Printer<'_, '_>),
Sets the closure for draw(&Printer)
.
pub fn with_draw<F>(self, f: F) -> Self where
F: 'static + Fn(&T, &Printer<'_, '_>),
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F: 'static + Fn(&T, &Printer<'_, '_>),
Sets the closure for draw(&Printer)
.
Chainable variant.
pub fn set_on_event<F>(&mut self, f: F) where
F: 'static + FnMut(&mut T, Event) -> EventResult,
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F: 'static + FnMut(&mut T, Event) -> EventResult,
Sets the closure for on_event(Event)
.
pub fn with_on_event<F>(self, f: F) -> Self where
F: 'static + FnMut(&mut T, Event) -> EventResult,
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F: 'static + FnMut(&mut T, Event) -> EventResult,
Sets the closure for on_event(Event)
.
Chainable variant.
pub fn set_required_size<F>(&mut self, f: F) where
F: 'static + FnMut(&mut T, Vec2) -> Vec2,
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F: 'static + FnMut(&mut T, Vec2) -> Vec2,
Sets the closure for required_size(Vec2)
.
pub fn with_required_size<F>(self, f: F) -> Self where
F: 'static + FnMut(&mut T, Vec2) -> Vec2,
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F: 'static + FnMut(&mut T, Vec2) -> Vec2,
Sets the closure for required_size(Vec2)
.
Chainable variant.
pub fn set_layout<F>(&mut self, f: F) where
F: 'static + FnMut(&mut T, Vec2),
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F: 'static + FnMut(&mut T, Vec2),
Sets the closure for layout(Vec2)
.
pub fn with_layout<F>(self, f: F) -> Self where
F: 'static + FnMut(&mut T, Vec2),
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F: 'static + FnMut(&mut T, Vec2),
Sets the closure for layout(Vec2)
.
Chainable variant.
pub fn set_take_focus<F>(&mut self, f: F) where
F: 'static + FnMut(&mut T, Direction) -> bool,
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F: 'static + FnMut(&mut T, Direction) -> bool,
Sets the closure for take_focus(Direction)
.
pub fn with_take_focus<F>(self, f: F) -> Self where
F: 'static + FnMut(&mut T, Direction) -> bool,
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F: 'static + FnMut(&mut T, Direction) -> bool,
Sets the closure for take_focus(Direction)
.
Chainable variant.
pub fn set_needs_relayout<F>(&mut self, f: F) where
F: 'static + Fn(&T) -> bool,
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F: 'static + Fn(&T) -> bool,
Sets the closure for needs_relayout()
.
pub fn with_needs_relayout<F>(self, f: F) -> Self where
F: 'static + Fn(&T) -> bool,
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F: 'static + Fn(&T) -> bool,
Sets the closure for needs_relayout()
.
Chainable variant.
pub fn set_call_on_any<F>(&mut self, f: F) where
F: 'static + for<'a> FnMut(&mut T, &Selector<'_>, AnyCb<'a>),
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F: 'static + for<'a> FnMut(&mut T, &Selector<'_>, AnyCb<'a>),
Sets the closure for call_on_any()
.
pub fn with_call_on_any<F>(self, f: F) -> Self where
F: 'static + for<'a> FnMut(&mut T, &Selector<'_>, AnyCb<'a>),
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F: 'static + for<'a> FnMut(&mut T, &Selector<'_>, AnyCb<'a>),
Sets the closure for call_on_any()
.
Chainable variant.
pub fn set_important_area<F>(&mut self, f: F) where
F: 'static + Fn(&T, Vec2) -> Rect,
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F: 'static + Fn(&T, Vec2) -> Rect,
Sets the closure for important_area()
.
pub fn with_important_area<F>(self, f: F) -> Self where
F: 'static + Fn(&T, Vec2) -> Rect,
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F: 'static + Fn(&T, Vec2) -> Rect,
Sets the closure for important_area()
.
Chainable variant.
pub fn set_focus_view<F>(&mut self, f: F) where
F: 'static + FnMut(&mut T, &Selector<'_>) -> Result<(), ViewNotFound>,
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F: 'static + FnMut(&mut T, &Selector<'_>) -> Result<(), ViewNotFound>,
Sets the closure for focus_view()
.
pub fn with_focus_view<F>(self, f: F) -> Self where
F: 'static + FnMut(&mut T, &Selector<'_>) -> Result<(), ViewNotFound>,
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F: 'static + FnMut(&mut T, &Selector<'_>) -> Result<(), ViewNotFound>,
Sets the closure for focus_view()
.
Chainable variant.
Trait Implementations
impl<T: 'static> View for Canvas<T>
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pub fn draw(&self, printer: &Printer<'_, '_>)
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pub fn on_event(&mut self, event: Event) -> EventResult
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pub fn required_size(&mut self, constraint: Vec2) -> Vec2
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pub fn layout(&mut self, size: Vec2)
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pub fn take_focus(&mut self, source: Direction) -> bool
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pub fn needs_relayout(&self) -> bool
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pub fn focus_view(
&mut self,
selector: &Selector<'_>
) -> Result<(), ViewNotFound>
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&mut self,
selector: &Selector<'_>
) -> Result<(), ViewNotFound>
pub fn important_area(&self, view_size: Vec2) -> Rect
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pub fn call_on_any<'a>(&mut self, selector: &Selector<'_>, cb: AnyCb<'a>)
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pub fn type_name(&self) -> &'static str
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Auto Trait Implementations
impl<T> !RefUnwindSafe for Canvas<T>
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impl<T> !Send for Canvas<T>
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impl<T> !Sync for Canvas<T>
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impl<T> Unpin for Canvas<T> where
T: Unpin,
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T: Unpin,
impl<T> !UnwindSafe for Canvas<T>
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> Erased for T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,