Struct ImageViewState 

pub struct ImageViewState {
    pub zoom: f64,
    pub cx: f64,
    pub cy: f64,
    pub fit: bool,
    pub label: String,
    pub gpu: CanvasGpu,
    /* private fields */
}

the app-owned state of an image view (see the module header of imgview.rs)

Fields

zoom: f64

1.0 = 100 %

cx: f64

the image point (image px) at the centre of the view

cy: f64

fit: bool

the zoom follows the view: the whole image, centred

label: String

the accessible name (empty: the SVG’s title, else “Bild”)

gpu: CanvasGpu

how the view’s zoom and pan use the GPU (canvas.rs)

Implementations

impl ImageViewState

pub fn zoom_pct(&self) -> i32

the zoom in percent (rounded)

pub fn set_fit(&mut self)

fit mode: the whole image in the view

pub fn set_actual(&mut self)

100 %, the centre kept

pub fn zoom_by(&mut self, f: f64)

multiply the zoom (about the view’s centre)

pub fn zoom_to(&mut self, r: [f64; 4])

show the image rectangle x, y, w, h (image px) as large as the view allows

Trait Implementations

impl Clone for ImageViewState

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ImageViewState

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

Formats the value using the given formatter.

impl Default for ImageViewState

fn default() -> ImageViewState

Returns the “default value” for a type.