Struct epaint::PaintCallbackInfo

pub struct PaintCallbackInfo {
    pub viewport: Rect,
    pub clip_rect: Rect,
    pub pixels_per_point: f32,
    pub screen_size_px: [u32; 2],
}

Information passed along with PaintCallback (Shape::Callback).

Fields

viewport: Rect

Viewport in points.

This specifies where on the screen to paint, and the borders of this Rect is the [-1, +1] of the Normalized Device Coordinates.

Note than only a portion of this may be visible due to Self::clip_rect.

This comes from PaintCallback::rect.

clip_rect: Rect

Clip rectangle in points.

pixels_per_point: f32

Pixels per point.

screen_size_px: [u32; 2]

Full size of the screen, in pixels.

Implementations

impl PaintCallbackInfo

pub fn viewport_in_pixels(&self) -> ViewportInPixels

The viewport rectangle. This is what you would use in e.g. glViewport.

pub fn clip_rect_in_pixels(&self) -> ViewportInPixels

The “scissor” or “clip” rectangle. This is what you would use in e.g. glScissor.