Struct EyedropperArea 

pub struct EyedropperArea { /* private fields */ }

Where an eyedropper picks from, over a picture. While armed, a click asks sampler for the color at that point of the content, in the units of the space; a point out of the content or a None picks nothing and leaves it armed. While not armed it takes no input.

CursorIcon has no eyedropper, so while armed the cursor is the pointing hand.

Implementations

impl EyedropperArea

pub fn new( state: &EyedropperState, sampler: impl Fn(Point) -> Option<Color> + 'static, ) -> EyedropperArea

An area of this eyedropper that reads colors with sampler.

pub fn label(self, label: impl Into<String>) -> EyedropperArea

The name screen readers announce while armed, instead of the one in Labels.

impl EyedropperArea

pub fn size(self, width: f32, height: f32) -> EyedropperArea

Fixed size in logical pixels, instead of taking the free space.

pub fn grow(self, grow: f32) -> EyedropperArea

How much of the free space along the parent stack it takes: 1 by default, or 0 over a stage, which then decides the size.

pub fn stage(self, stage: impl View + 'static) -> EyedropperArea

The view it goes over, such as an Image or a ZoomPanView, which gives it its size. Without one, put it in a ZStack with a fixed size.

pub fn space(self, space: ContentSpace) -> EyedropperArea

Where the content is, and so the units of its coordinates: by default, its own box.

Trait Implementations

impl Debug for EyedropperArea

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

Formats the value using the given formatter.

impl View for EyedropperArea

fn build(&self, cx: &mut BuildCx<'_>) -> NodeId

Creates this view’s node for the current build.

fn type_name(&self) -> &'static str

The name the diagnostics panel shows this view’s cost under.