Enum ContentSpace 

#[non_exhaustive]
pub enum ContentSpace {
    Frame,
    Fit(Size),
    View(Binding<ZoomView>, Size),
}

How the coordinates of a widget drawn over content relate to the screen, so that a selection or a crop is told in the units of the content whatever the zoom.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Frame

The widget’s own box is the content, one unit per logical pixel from its top left corner.

Fit(Size)

Content of this size, shown whole and centered in the box, as an image that fits.

View(Binding<ZoomView>, Size)

Content of this size where a ZoomPanView with the same ZoomView shows it. Put the widget exactly over that view.

Implementations

impl ContentSpace

pub fn placed(&self, frame: Rect) -> Rect

Where the whole content lands on screen, for a widget at frame.

pub fn content_size(&self, frame: Rect) -> Size

The size of the content in its own units.

pub fn scale(&self, frame: Rect) -> f32

Logical pixels on screen per unit of content.

pub fn to_content(&self, frame: Rect, at: Point) -> Point

A point on screen, in the units of the content.

pub fn to_screen(&self, frame: Rect, at: Point) -> Point

A point of the content, on screen.

pub fn rect_to_screen(&self, frame: Rect, rect: Rect) -> Rect

A rectangle of the content, on screen.

Trait Implementations

impl Clone for ContentSpace

fn clone(&self) -> ContentSpace

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentSpace

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

Formats the value using the given formatter.

impl Default for ContentSpace

fn default() -> ContentSpace

Returns the “default value” for a type.