class

Opal::UI::ScrollBar

Inherits Opal::UI::Control < Opal::UI::InputHookable < Opal::UI::Element < Opal::UI::Themable < Reference < Object

Focusable, interactive ScrollBar component supporting Vertical and Horizontal orientations, proportional thumb sizing, arrow stepper buttons, mouse dragging, and keyboard paging navigation.

Constructors

new(orientation : Orientation | Symbol = Orientation::Vertical, min_value : Int32 = 0, max_value : Int32 = 100, value : Int32 = 0, page_size : Int32 = 10, show_arrows : Bool = true, on_change : Proc(Int32, Nil) | Nil = nil)

new(orientation : Orientation = Orientation::Vertical, min_value : Int32 = 0, max_value : Int32 = 100, value : Int32 = 0, page_size : Int32 = 10, show_arrows : Bool = true, &block : Int32 -> Nil) : ScrollBar

Instance methods

arrow_down_char

arrow_down_char=(arrow_down_char : Char | Nil)

arrow_fg

arrow_fg=(arrow_fg : Color | Nil)

arrow_left_char

arrow_left_char=(arrow_left_char : Char | Nil)

arrow_right_char

arrow_right_char=(arrow_right_char : Char | Nil)

arrow_up_char

arrow_up_char=(arrow_up_char : Char | Nil)

handle_key(key : Terminal::KeyEvent) : Bool

Default key event handler. Override in subclasses if not using @default_input_proc.

handle_mouse(event : Terminal::MouseEvent) : Bool

Default mouse event handler. Override in subclasses if not using @default_input_proc.

max_value

max_value=(max_value : Int32)

min_value

min_value=(min_value : Int32)

on_change

on_change

on_change=(on_change : Proc(Int32, Nil) | Nil)

orientation

orientation=(orientation : Orientation)

page_size

page_size=(page_size : Int32)

preferred_size(available_w : Int32, available_h : Int32) : Tuple(Int32, Int32)

render(buffer : Buffer, x : Int32, y : Int32, width : Int32, height : Int32) : Nil

scroll(delta : Int32) : self

set_value(new_val : Int32) : self

show_arrows=(show_arrows : Bool)

show_arrows?

thumb_bg

thumb_bg=(thumb_bg : Color | Nil)

thumb_char

thumb_char=(thumb_char : Char | Nil)

thumb_fg

thumb_fg=(thumb_fg : Color | Nil)

track_bg

track_bg=(track_bg : Color | Nil)

track_char

track_char=(track_char : Char | Nil)

track_fg

Manipulable theme properties and character swaps

track_fg=(track_fg : Color | Nil)

Manipulable theme properties and character swaps

value

value=(value : Int32)

Nested types

Opal::UI::ScrollBar::Orientation