Struct fltk::valuator::Roller

pub struct Roller { /* fields omitted */ }

Creates a roller widget

Trait Implementations

impl Clone for Roller

fn clone(&self) -> Roller

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Roller

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Roller

fn default() -> Self

Returns the “default value” for a type.

impl ValuatorExt for Roller

fn set_bounds(&mut self, a: f64, b: f64)

Set bounds of a valuator

fn minimum(&self) -> f64

Get the minimum bound of a valuator

fn set_minimum(&mut self, a: f64)

Set the minimum bound of a valuator

fn maximum(&self) -> f64

Get the maximum bound of a valuator

fn set_maximum(&mut self, a: f64)

Set the maximum bound of a valuator

fn set_range(&mut self, a: f64, b: f64)

Set the range of a valuator

fn set_step(&mut self, a: f64, b: i32)

Set change step of a valuator. Rounds to multiples of a/b, or no rounding if a is zero

fn step(&self) -> f64

Get change step of a valuator

fn set_precision(&mut self, digits: i32)

Set the precision of a valuator

fn value(&self) -> f64

Get the value of a valuator

fn set_value(&mut self, arg2: f64)

Set the value of a valuator

fn format(&mut self, arg2: &str) -> Result<(), FltkError>

Set the format of a valuator

fn round(&self, arg2: f64) -> f64

Round the valuator

fn clamp(&self, arg2: f64) -> f64

Clamp the valuator

fn increment(&mut self, arg2: f64, arg3: i32) -> f64

Increment the valuator

impl WidgetBase for Roller

fn new<T: Into<Option<&'static str>>>(
    x: i32,
    y: i32,
    width: i32,
    height: i32,
    title: T
) -> Roller

Creates a new widget, takes an x, y coordinates, as well as a width and height, plus a title

fn delete(wid: Self)

Deletes widgets and their children.

unsafe fn from_widget_ptr(ptr: *mut Fl_Widget) -> Self

transforms a widget pointer to a Widget, for internal use

unsafe fn from_widget<W: WidgetExt>(w: W) -> Self

Get a widget from base widget

fn handle<F: FnMut(&mut Self, Event) -> bool + 'static>(&mut self, cb: F)

Set a custom handler, where events are managed manually, akin to Fl_Widget::handle(int). Handled or ignored events should return true, unhandled events should return false. takes the widget as a closure argument

fn draw<F: FnMut(&mut Self) + 'static>(&mut self, cb: F)

Set a custom draw method. takes the widget as a closure argument. macOS requires that WidgetBase::draw actually calls drawing functions

unsafe fn draw_data(&mut self) -> Option<Box<dyn FnMut()>>

INTERNAL: Retrieve the draw data

unsafe fn handle_data(&mut self) -> Option<Box<dyn FnMut(Event) -> bool>>

INTERNAL: Retrieve the handle data

impl WidgetExt for Roller

fn set_pos(&mut self, x: i32, y: i32)

Set to position x, y

fn set_size(&mut self, width: i32, height: i32)

Set to dimensions width and height

fn set_label(&mut self, title: &str)

Sets the widget’s label. labels support special symbols preceded by an @ sign. and for the associated formatting.

fn redraw(&mut self)

Redraws a widget, necessary for resizing and changing positions

fn show(&mut self)

Shows the widget

fn hide(&mut self)

Hides the widget

fn x(&self) -> i32

Returns the x coordinate of the widget

fn y(&self) -> i32

Returns the y coordinate of the widget

fn width(&self) -> i32

Returns the width of the widget

fn height(&self) -> i32

Returns the height of the widget

fn w(&self) -> i32

Returns the width of the widget

fn h(&self) -> i32

Returns the height of the widget

fn label(&self) -> String

Returns the label of the widget

fn measure_label(&self) -> (i32, i32)

Measures the label’s width and height

unsafe fn as_widget_ptr(&self) -> *mut Fl_Widget

transforms a widget to a base Fl_Widget, for internal use

fn activate(&mut self)

Activates the widget

fn deactivate(&mut self)

Deactivates the widget

fn redraw_label(&mut self)

Redraws the label of the widget

fn resize(&mut self, x: i32, y: i32, width: i32, height: i32)

Resizes and/or moves the widget, takes x, y, width and height

fn tooltip(&self) -> Option<String>

Returns the tooltip text

fn set_tooltip(&mut self, txt: &str)

Sets the tooltip text

fn color(&self) -> Color

Returns the widget color

fn set_color(&mut self, color: Color)

Sets the widget’s color

fn label_color(&self) -> Color

Returns the widget label’s color

fn set_label_color(&mut self, color: Color)

Sets the widget label’s color

fn label_font(&self) -> Font

Returns the widget label’s font

fn set_label_font(&mut self, font: Font)

Sets the widget label’s font

fn label_size(&self) -> i32

Returns the widget label’s size

fn set_label_size(&mut self, sz: i32)

Sets the widget label’s size

fn label_type(&self) -> LabelType

Returns the widget label’s type

fn set_label_type(&mut self, typ: LabelType)

Sets the widget label’s type

fn frame(&self) -> FrameType

Returns the widget’s frame type

fn set_frame(&mut self, typ: FrameType)

Sets the widget’s frame type

fn changed(&self) -> bool

Returns whether the widget was changed

fn set_changed(&mut self)

Mark the widget as changed

fn clear_changed(&mut self)

Clears the changed status of the widget

fn align(&self) -> Align

Returns the alignment of the widget

fn set_align(&mut self, align: Align)

Sets the alignment of the widget

fn set_trigger(&mut self, trigger: CallbackTrigger)

Sets the default callback trigger for a widget

fn trigger(&self) -> CallbackTrigger

Return the callback trigger

fn parent(&self) -> Option<Box<dyn GroupExt>>

Returns the parent of the widget

fn selection_color(&mut self) -> Color

Gets the selection color of the widget

fn set_selection_color(&mut self, color: Color)

Sets the selection color of the widget

fn do_callback(&mut self)

Runs the already registered callback

fn window(&self) -> Option<Box<dyn WindowExt>>

Returns the direct window holding the widget

fn top_window(&self) -> Option<Box<dyn WindowExt>>

Returns the topmost window holding the widget

fn takes_events(&self) -> bool

Checks whether a widget is capable of taking events

unsafe fn user_data(&self) -> Option<Box<dyn FnMut()>>

INTERNAL: Retakes ownership of the user callback data

fn take_focus(&mut self) -> Result<(), FltkError>

Make the widget take focus

fn set_visible_focus(&mut self)

Set the widget to have visible focus

fn clear_visible_focus(&mut self)

Clear visible focus

fn visible_focus(&mut self, v: bool)

Set the visible focus using a flag

fn has_visible_focus(&mut self) -> bool

Return whether the widget has visible focus

fn was_deleted(&self) -> bool

Check if a widget was deleted

fn damage(&self) -> bool

Return whether the widget was damaged

fn set_damage(&mut self, flag: bool)

Signal the widget as damaged and it should be redrawn in the next event loop cycle

fn damage_type(&self) -> Damage

Return the damage mask

fn set_damage_type(&mut self, mask: Damage)

Signal the type of damage a widget received

fn clear_damage(&mut self)

Clear the damaged flag

fn as_window(&self) -> Option<Box<dyn WindowExt>>

Return the widget as a window if it’s a window

fn as_group(&self) -> Option<Box<dyn GroupExt>>

Return the widget as a group widget if it’s a group widget

fn below_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self

Positions the widget below w, the size of w should be known

fn above_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self

Positions the widget above w, the size of w should be known

fn right_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self

Positions the widget to the right of w, the size of w should be known

fn left_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self

Positions the widget to the left of w, the size of w should be known

fn center_of<W: WidgetExt>(self, w: &W) -> Self

Positions the widget to the center of w, the size of w should be known

fn center_of_parent(self) -> Self

Positions the widget to the center of its parent

fn size_of<W: WidgetExt>(self, w: &W) -> Self

Takes the size of w, the size of w should be known

fn size_of_parent(self) -> Self

Takes the size of the parent group or window

fn inside<W: WidgetExt>(&self, wid: &W) -> bool

Checks whether the self widget is inside another widget

fn with_pos(self, x: i32, y: i32) -> Self

Initialize to position x, y, (should only be called on initialization)

fn with_size(self, width: i32, height: i32) -> Self

Initialilze to dimensions width and height, (should only be called on initialization)

fn with_label(self, title: &str) -> Self

Initialize with label/title, (should only be called on initialization)

fn with_align(self, align: Align) -> Self

Sets the initial alignment of the widget, (should only be called on initialization)

fn get_type<T: WidgetType>(&self) -> T

Returns the widget type when applicable

fn set_type<T: WidgetType>(&mut self, typ: T)

Sets the widget type

fn set_image<I: ImageExt>(&mut self, image: Option<I>)

Sets the image of the widget

fn image(&self) -> Option<Box<dyn ImageExt>>

Gets the image associated with the widget

fn set_deimage<I: ImageExt>(&mut self, image: Option<I>)

Sets the image of the widget

fn deimage(&self) -> Option<Box<dyn ImageExt>>

Gets the image associated with the widget

fn set_callback<F: FnMut(&mut Self) + 'static>(&mut self, cb: F)

Sets the callback when the widget is triggered (clicks for example) takes the widget as a closure argument

fn emit<T: 'static + Clone + Send + Sync>(&mut self, sender: Sender<T>, msg: T)

Emits a message on callback using a sender

unsafe fn into_widget<W: WidgetBase>(&self) -> W where
    Self: Sized, 

Upcast a WidgetExt to a Widget

fn visible(&self) -> bool

Returns whether a widget is visible

fn visible_r(&self) -> bool

Returns whether a widget or any of its parents are visible (recursively)

impl Send for Roller

impl Sync for Roller