ribir_core 0.4.0-alpha.47

A non-intrusive declarative GUI framework, to build modern native/wasm cross-platform applications.
Documentation 
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use crate::prelude::*;

impl Render for Resource<PixelImage> {
  fn perform_layout(&self, clamp: BoxClamp, _: &mut LayoutCtx) -> Size {
    let size = Size::new(self.width() as f32, self.height() as f32);
    clamp.clamp(size)
  }

  fn paint(&self, ctx: &mut PaintingCtx) {
    let size = ctx.box_size().unwrap();
    let box_rect = Rect::from_size(size);
    let img_rect = Rect::from_size(Size::new(self.width() as f32, self.height() as f32));
    let painter = ctx.painter();
    if let Some(rc) = img_rect.intersection(&box_rect) {
      painter.draw_img(self.clone(), &rc, &Some(rc));
    }
  }

  fn visual_box(&self, ctx: &mut VisualCtx) -> Option<Rect> {
    let box_rect = Rect::from_size(ctx.box_size()?);
    let img_rect = Rect::from_size(Size::new(self.width() as f32, self.height() as f32));
    img_rect.intersection(&box_rect)
  }
}