pub struct LineGutter { /* private fields */ }Expand description
A line-number gutter for a code editor: the column “1\n2\n3…” drawn top-aligned with the same line height a
TextArea uses, so line n here sits exactly on line n of the editor. Place it beside
the editor inside the same scroll (so they scroll together) and give both the same font_size. It measures
its own width from the widest number and its height from the line count, re-measuring reactively as the
count changes. Toggle it by collapsing its node (set_display) inside a ClippedItem
so a hidden gutter both takes no width and draws nothing.
Implementations§
Source§impl LineGutter
impl LineGutter
pub fn new( line_count: impl Fn() -> usize + 'static, layout_style: LayoutStyle, style_fn: impl Fn() -> TextStyle + 'static, ) -> Result<LineGutter, LayoutError>
Trait Implementations§
Source§impl Component for LineGutter
impl Component for LineGutter
fn view(&self) -> RenderNode
fn on_event(&mut self, _event: &Event) -> EventResult
Source§fn debug_name(&self) -> &'static str
fn debug_name(&self) -> &'static str
Human-readable widget type name for the devtools tree inspector.
Auto Trait Implementations§
impl !RefUnwindSafe for LineGutter
impl !Send for LineGutter
impl !Sync for LineGutter
impl !UnwindSafe for LineGutter
impl Freeze for LineGutter
impl Unpin for LineGutter
impl UnsafeUnpin for LineGutter
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
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.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait.Source§fn as_any(&self) -> &(dyn Any + 'static)
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.Source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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.Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§impl<T> LayoutItem for Twhere
T: LeafWidget + Component,
impl<T> LayoutItem for Twhere
T: LeafWidget + Component,
fn layout_node(&self) -> NodeId
Source§fn pointer_opaque(&self) -> bool
fn pointer_opaque(&self) -> bool
Whether this widget stands in front of whatever its siblings drew underneath it, for a pointer event
its parent is hit-testing. Read more