Module druid::widget

Common widgets.

Modules

• prelude
  The types required to implement a Widget.

Structs

• Added
  This Controller widget responds to LifeCycle::WidgetAdded event with the provided closure. Pass this and a child widget to ControllerHost to respond to the event when the child widget is added to the widget tree. This is also available, for convenience, as an on_added method via WidgetExt.
• Align
  A widget that aligns its child.
• AspectRatioBox
  A widget that preserves the aspect ratio given to it.
• Button
  A button with a text label.
• Checkbox
  A checkbox that toggles a bool.
• Click
  A clickable Controller widget. Pass this and a child widget to a ControllerHost to make the child interactive. More conveniently, this is available as an on_click method via WidgetExt.
• ClipBox
  A widget exposing a rectangular view into its child, which can be used as a building block for widgets that scroll their child.
• Container
  A widget that provides simple visual styling options to a child.
• ControllerHost
  A Widget that manages a child and a Controller.
• DefaultScopePolicy
  A default implementation of ScopePolicy that takes a function and a transfer.
• DisabledIf
  A widget wrapper which disables the child widget if the provided closure return true.
• Either
  A widget that switches between two possible child views.
• EnvScope
  A widget that accepts a closure to update the environment for its child.
• Flex
  A container with either horizontal or vertical layout.
• FlexParams
  Optional parameters for an item in a Flex container (row or column).
• IdentityWrapper
  A wrapper that adds an identity to an otherwise anonymous widget.
• Image
  A widget that renders a bitmap Image.
• IntrinsicWidth
  A widget that sizes its child to the child’s maximum intrinsic width.
• Label
  A label that displays static or dynamic text.
• LensScopeTransfer
  A ScopeTransfer that uses a Lens to synchronise between a large internal state and a small input.
• LensWrap
  A wrapper for its widget subtree to have access to a part of its parent’s data.
• List
  A list widget for a variable-size collection of items.
• Maybe
  A widget that switches between two possible child views, for Data that is Option<T>.
• Padding
  A widget that just adds padding around its child.
• Painter
  A widget that only handles painting.
• ProgressBar
  A progress bar, displaying a numeric progress value.
• Radio
  A single radio button
• RadioGroup
  A group of radio buttons
• RangeSlider
  A range slider, allowing interactive update of two numeric values .
• RawLabel
  A widget that displays text data.
• Scope
  A widget that allows encapsulation of application state.
• Scroll
  A container that scrolls its contents.
• SizedBox
  A widget with predefined size.
• Slider
  A slider, allowing interactive update of a numeric value.
• Spinner
  An animated spinner widget for showing a loading state.
• Split
  A container containing two other widgets, splitting the area either horizontally or vertically.
• Stepper
  A stepper widget for step-wise increasing and decreasing a value.
• Svgsvg
  A widget that renders a SVG
• SvgDatasvg
  Stored parsed SVG tree.
• Switch
  A switch that toggles a bool.
• TabInfo
  Information about a tab that may be used by the TabPolicy to drive the visual presentation and behaviour of its label
• Tabs
  A tabs widget.
• TabsState
  This is the current state of the tabs widget as a whole. This expands the input data to include a policy that determines how tabs are derived, and the index of the currently selected tab
• TextBox
  A widget that allows user text input.
• ValueTextBox
  A TextBox that uses a Formatter to handle formatting and validation of its data.
• ViewSwitcher
  A widget that switches dynamically between multiple children.
• Viewport
  Represents the size and position of a rectangular “viewport” into a larger area.
• WidgetId
  A unique identifier for a single Widget.
• ZStack
  A container that stacks its children on top of each other.

Enums

• Axis
  An axis in visual space.
• BackgroundBrush
  Something that can be used as the background for a widget.
• CrossAxisAlignment
  The alignment of the widgets on the container’s cross (or minor) axis.
• FillStrat
  Strategies for inscribing a rectangle inside another rectangle.
• KnobStyle
  The shape of the slider knobs.
• LabelText
  The text for a Label.
• LineBreaking
  Options for handling lines that are too wide for the label.
• MainAxisAlignment
  Arrangement of children on the main axis.
• TabsEdge
  Determines where the tab bar should be placed relative to the cross axis
• TabsTransition
  Determines whether the tabs will have a transition animation when a new tab is selected.
• TextBoxEvent
  Events sent to a ValidationDelegate.

Traits

• AddTab
  AddTabs is an extension to TabsPolicy. If a policy implements AddTab, then the add_tab and with_tab methods will be available on the Tabs instance.
• Controller
  A trait for types that modify behaviour of a child widget.
• ListIter
  This iterator enables writing List widget for any Data.
• ScopePolicy
  A policy that controls how a Scope will interact with its surrounding application data. Specifically, how to create an initial State from the input, and how to synchronise the two using a ScopeTransfer.
• ScopeTransfer
  A ScopeTransfer knows how to synchronise input data with its counterpart within a Scope.
• TabsPolicy
  A policy that determines how a Tabs instance derives its tabs from its app data.
• ValidationDelegate
  A type that can be registered to receive callbacks as the state of a ValueTextBox changes.
• Widget
  The trait implemented by all widgets.
• WidgetExt
  A trait that provides extra methods for combining Widgets.
• WidgetWrapper
  A trait for widgets that wrap a single child to expose that child for access and mutation