Struct Image 

pub struct Image { /* private fields */ }

An image with margins

May be default constructed (result is empty).

Implementations

impl Image

pub fn new(handle: ImageHandle, draw: &mut dyn DrawShared) -> Option<Self>

Construct from a pre-allocated image

The image may be allocated through the DrawShared interface.

pub fn set( &mut self, cx: &mut EventState, handle: ImageHandle, draw: &mut dyn DrawShared, ) -> bool

Assign a pre-allocated image

Returns true on success. On error, self is unchanged.

pub fn clear(&mut self, cx: &mut EventState, draw: &mut dyn DrawShared)

Remove image (set empty)

pub fn with_scaling(self, f: impl FnOnce(&mut PixmapScaling)) -> Self

Adjust scaling

By default, this is PixmapScaling::default except with fix_aspect: true.

pub fn set_scaling( &mut self, cx: &mut EventState, f: impl FnOnce(&mut PixmapScaling), )

Adjust scaling

By default, this is PixmapScaling::default except with fix_aspect: true.

Trait Implementations

impl Clone for Image

fn clone(&self) -> Image

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Image

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

Formats the value using the given formatter.

impl Default for Image

fn default() -> Image

Returns the “default value” for a type.

impl Events for Image

fn handle_event( &mut self, _: &mut EventCx<'_>, _: &Self::Data, _: Event<'_>, ) -> IsUsed

Handle an Event

const REDRAW_ON_MOUSE_OVER: bool = false

Does this widget have a different appearance on mouse over?

fn mouse_over_icon(&self) -> Option<CursorIcon>

The mouse cursor icon to use on mouse over

fn make_child_id(&mut self, index: usize) -> Id

Make an identifier for a child

fn configure(&mut self, cx: &mut ConfigCx<'_>)

Configure self

fn configure_recurse(&mut self, cx: &mut ConfigCx<'_>, data: &Self::Data)

Configure children

fn update(&mut self, cx: &mut ConfigCx<'_>, data: &Self::Data)

Update self using input data

fn update_recurse(&mut self, cx: &mut ConfigCx<'_>, data: &Self::Data)

Update children

fn handle_mouse_over(&mut self, cx: &mut EventCx<'_>, state: bool)

Mouse focus handler

fn handle_messages(&mut self, cx: &mut EventCx<'_>, data: &Self::Data)

Handler for messages from children/descendants

fn handle_scroll( &mut self, cx: &mut EventCx<'_>, data: &Self::Data, scroll: Scroll, )

Handler for scrolling

impl Layout for Image

fn rect(&self) -> Rect

Get the widget’s region

fn size_rules(&mut self, sizer: SizeCx<'_>, axis: AxisInfo) -> SizeRules

Get size rules for the given axis

fn set_rect(&mut self, cx: &mut ConfigCx<'_>, rect: Rect, hints: AlignHints)

Set size and position

fn draw(&self, draw: DrawCx<'_>)

Draw a widget and its children

fn try_probe(&self, coord: Coord) -> Option<Id>

Probe a coordinate for a widget’s Id

impl Tile for Image

fn role(&self, _: &mut dyn RoleCx) -> Role<'_>

Describe the widget’s role

fn as_tile(&self) -> &dyn Tile

Get as a dyn Tile

fn id_ref(&self) -> &Id

Get a reference to the widget’s identifier

fn identify(&self) -> IdentifyWidget<'_>

Return a Display-able widget identifier

fn get_child(&self, index: usize) -> Option<&dyn Tile>

Access a child as a dyn Tile, if available

fn child_indices(&self) -> ChildIndices

Get child indices available to recursion

fn nav_next(&self, reverse: bool, from: Option<usize>) -> Option<usize>

Navigation in spatial order

fn probe(&self, coord: Coord) -> Id

Probe a coordinate for a widget’s Id

fn id(&self) -> Id

Get the widget’s identifier

fn navigable(&self) -> bool

Whether this widget supports navigation focus

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

Tooltip

fn role_child_properties(&self, cx: &mut dyn RoleCx, index: usize)

Specify additional role properties for child index

fn find_child_index(&self, id: &Id) -> Option<usize>

Find the child which is an ancestor of this id, if any

fn translation(&self, index: usize) -> Offset

Get translation of child index relative to this widget

impl Widget for Image

type Data = ()

Input data type

fn as_node<'__a>(&'__a mut self, data: &'__a Self::Data) -> Node<'__a>

Erase type

fn child_node<'__n>( &'__n mut self, data: &'__n Self::Data, index: usize, ) -> Option<Node<'__n>>

Access a child as a Node, if available