Struct Viewport 

pub struct Viewport {
    pub zoom: f32,
    pub offset: Point<Pixels>,
    pub window_bounds: Option<Bounds<Pixels>>,
}

Fields

zoom: f32

offset: Point<Pixels>

window_bounds: Option<Bounds<Pixels>>

Implementations

impl Viewport

pub fn new() -> Self

pub fn sync_drawable_bounds(&mut self, window: &Window)

Sets Self::window_bounds to the window’s drawable area (Window::viewport_size), origin (0, 0). Skips assignment when width/height are unchanged.

Prefer this over Window::bounds() for hit-testing and overlay layout: the latter is in global space and can be larger than the content viewport.

pub fn world_to_screen(&self, p: Point<Pixels>) -> Point<Pixels>

Examples found in repository

examples/extension.rs (line 55)

    fn render(&self, node: &Node, ctx: &mut RenderContext) -> AnyElement {
        let screen = ctx.viewport.world_to_screen(node.point());
        let node_x = screen.x;
        let node_y = screen.y;

        div()
            .absolute()
            .left(node_x)
            .top(node_y)
            .w(node.size.width * ctx.viewport.zoom)
            .h(node.size.height * ctx.viewport.zoom)
            .bg(rgb(0x505078))
            .child(div().child("Number Node").text_color(white()))
            .into_any()
    }

pub fn screen_to_world(&self, p: Point<Pixels>) -> Point<Pixels>

pub fn is_node_visible(&self, node: &Node) -> bool

Trait Implementations

impl Clone for Viewport

fn clone(&self) -> Viewport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Viewport

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

Formats the value using the given formatter.