[−][src]Struct iced_audio::native::knob::Knob
A rotating knob GUI widget that controls a Param
Implementations
impl<'a, Message, Renderer: Renderer, ID> Knob<'a, Message, Renderer, ID> where
ID: Debug + Copy + Clone,
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ID: Debug + Copy + Clone,
pub fn new<F>(
state: &'a mut State,
param: &impl Param<ID = ID>,
on_change: F
) -> Self where
F: 'static + Fn((ID, Normal)) -> Message,
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state: &'a mut State,
param: &impl Param<ID = ID>,
on_change: F
) -> Self where
F: 'static + Fn((ID, Normal)) -> Message,
Creates a new Knob
.
It expects:
- the local
State
of theKnob
- a
Param
with the current and default values - a function that will be called when the
Knob
is turned. It receives the parameter'sID
and the newNormal
of theKnob
.ID
is a user supplied type. It can be anenum
,u32
,i32
,String
, etc. Each parameter/widget pair must have a uniqueID
value!
pub fn style(self, style: impl Into<Renderer::Style>) -> Self
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Sets the style of the Knob
.
pub fn scalar(self, scalar: f32) -> Self
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Sets how much the Normal
value will change for the Knob
per y
pixel movement of the mouse.
The default value is 0.008
pub fn modifier_keys(self, modifier_keys: ModifiersState) -> Self
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Sets the modifier keys of the Knob
.
The default modifier key is Ctrl
.
pub fn modifier_scalar(self, scalar: f32) -> Self
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Sets the scalar to use when the user drags the knobs while holding down
the modifier key. This is multiplied to the value set by
Knob::scalar()
(which the default is 0.008
).
For example, a modifier_scalar
of 0.5
will cause the knob to turn
half as fast when the modifier key is down.
The default modifier_scalar
is 0.02
, and the default modifier key
is Ctrl
.
Trait Implementations
impl<'a, Message, Renderer, ID> From<Knob<'a, Message, Renderer, ID>> for Element<'a, Message, Renderer> where
Renderer: 'a + Renderer,
Message: 'a,
ID: 'a + Debug + Copy + Clone,
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Renderer: 'a + Renderer,
Message: 'a,
ID: 'a + Debug + Copy + Clone,
impl<'a, Message, Renderer, ID> Widget<Message, Renderer> for Knob<'a, Message, Renderer, ID> where
Renderer: Renderer,
ID: Debug + Copy + Clone,
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Renderer: Renderer,
ID: Debug + Copy + Clone,
fn width(&self) -> Length
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fn height(&self) -> Length
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fn layout(&self, renderer: &Renderer, limits: &Limits) -> Node
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fn on_event(
&mut self,
event: Event,
layout: Layout,
cursor_position: Point,
messages: &mut Vec<Message>,
_renderer: &Renderer,
_clipboard: Option<&dyn Clipboard>
)
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&mut self,
event: Event,
layout: Layout,
cursor_position: Point,
messages: &mut Vec<Message>,
_renderer: &Renderer,
_clipboard: Option<&dyn Clipboard>
)
fn draw(
&self,
renderer: &mut Renderer,
_defaults: &Renderer::Defaults,
layout: Layout,
cursor_position: Point
) -> Renderer::Output
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&self,
renderer: &mut Renderer,
_defaults: &Renderer::Defaults,
layout: Layout,
cursor_position: Point
) -> Renderer::Output
fn hash_layout(&self, state: &mut Hasher)
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Auto Trait Implementations
impl<'a, Message, Renderer, ID> !RefUnwindSafe for Knob<'a, Message, Renderer, ID>
impl<'a, Message, Renderer, ID> !Send for Knob<'a, Message, Renderer, ID>
impl<'a, Message, Renderer, ID> !Sync for Knob<'a, Message, Renderer, ID>
impl<'a, Message, Renderer, ID> Unpin for Knob<'a, Message, Renderer, ID> where
ID: Unpin,
<Renderer as Renderer>::Style: Unpin,
ID: Unpin,
<Renderer as Renderer>::Style: Unpin,
impl<'a, Message, Renderer, ID> !UnwindSafe for Knob<'a, Message, Renderer, ID>
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,
fn borrow_mut(&mut self) -> &mut 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> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
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.
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>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,