Method Init

core/widget.go:229–273

Init should be called by every [Widget] type in its custom Init if it has one to establish all the default styling and event handling that applies to all widgets.

()

// Init if it has one to establish all the default styling
// and event handling that applies to all widgets.
func (wb *WidgetBase) Init() {
	wb.Styler(func(s *styles.Style) {
		s.MaxBorder.Style.Set(styles.BorderSolid)
		s.MaxBorder.Color.Set(colors.Scheme.Primary.Base)
		s.MaxBorder.Width.Set(units.Dp(1))

		// if we are disabled, we do not react to any state changes,
		// and instead always have the same gray colors
		if s.Is(states.Disabled) {
			s.Cursor = cursors.NotAllowed
			s.Opacity = 0.38
			return
		}
		// TODO(kai): what about context menus on mobile?
		tt, _ := wb.This.(Widget).WidgetTooltip(image.Pt(-1, -1))
		s.SetAbilities(tt != "", abilities.LongHoverable, abilities.LongPressable)

		if s.Is(states.Selected) {
			s.Background = colors.Scheme.Select.Container
			s.Color = colors.Scheme.Select.OnContainer
		}
	})
	wb.FinalStyler(func(s *styles.Style) {
		if s.Is(states.Focused) {
			s.Border.Style = s.MaxBorder.Style
			s.Border.Color = s.MaxBorder.Color
			s.Border.Width = s.MaxBorder.Width
		}
		if !s.AbilityIs(abilities.Focusable) {
			// never need bigger border if not focusable
			s.MaxBorder = s.Border
		}
	})

	// TODO(kai): maybe move all of these event handling functions into one function
	wb.handleWidgetClick()
	wb.handleWidgetStateFromMouse()
	wb.handleLongHoverTooltip()
	wb.handleWidgetStateFromFocus()
	wb.handleWidgetContextMenu()
	wb.handleWidgetMagnify()
	wb.handleValueOnChange()

	wb.Updater(wb.UpdateFromMake)
}

// OnAdd is called when widgets are added to a parent.
// It sets the scene of the widget to its widget parent.