pub struct Nothing {}Trait Implementations
sourceimpl WidgetImpl for Nothing
impl WidgetImpl for Nothing
sourcefn get_dims(&self) -> ScreenDims
fn get_dims(&self) -> ScreenDims
What width and height does the widget occupy? If this changes, be sure to set
redo_layout to true in event. Read more
sourcefn set_pos(&mut self, _top_left: ScreenPt)
fn set_pos(&mut self, _top_left: ScreenPt)
Your widget’s top left corner should be here. Handle mouse events and draw appropriately.
sourcefn event(&mut self, _: &mut EventCtx<'_>, _: &mut WidgetOutput)
fn event(&mut self, _: &mut EventCtx<'_>, _: &mut WidgetOutput)
Your chance to react to an event. Any side effects outside of this widget are communicated through the output. Read more
sourcefn draw(&self, _g: &mut GfxCtx<'_>)
fn draw(&self, _g: &mut GfxCtx<'_>)
Draw the widget. Be sure to draw relative to the top-left specified by set_pos.
sourcefn can_restore(&self) -> bool
fn can_restore(&self) -> bool
If a new Panel is being created to replace an older one, all widgets have the chance to preserve state from the previous version. Read more
sourcefn restore(&mut self, _: &mut EventCtx<'_>, _prev: &dyn WidgetImpl)
fn restore(&mut self, _: &mut EventCtx<'_>, _prev: &dyn WidgetImpl)
Restore state from the previous version of this widget, with the same ID. Implementors must downcast. Read more
Auto Trait Implementations
impl RefUnwindSafe for Nothing
impl Send for Nothing
impl Sync for Nothing
impl Unpin for Nothing
impl UnwindSafe for Nothing
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can
then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more
pub fn as_any(&self) -> &(dyn Any + 'static)
pub fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Instruments this type with the provided Span, returning an
Instrumented wrapper. Read more
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self