Run Iris examples on desktop and Android

examples/view/lib.rs

@@ -0,0 +1,36 @@
+use iris::prelude::*;
+
+#[derive(Clone, Copy, WidgetView)]
+struct Test {
+    #[root]
+    root: WeakWidget<Rect>,
+    cur: WeakState<bool>,
+}
+
+impl Test {
+    pub fn new<State>(rsc: &mut StdRsc<State>) -> Self {
+        let root = rect(PaintId::RED).add(rsc);
+        let cur = rsc.create_state(root, false);
+        Self { root, cur }
+    }
+    pub fn toggle<State>(&self, rsc: &mut StdRsc<State>) {
+        let cur = &mut rsc[self.cur];
+        *cur = !*cur;
+        if *cur {
+            rsc[self.root].set_paint(PaintId::BLUE);
+        } else {
+            rsc[self.root].set_paint(PaintId::RED);
+        }
+    }
+}
+
+pub(crate) fn build<State>(rsc: &mut StdRsc<State>, ui_state: &mut impl HasRoot<StdRsc<State>>)
+where
+    State: FocusHost,
+{
+    let test = Test::new(rsc);
+    test.on(CursorSense::click(), move |_, rsc| {
+        test.toggle(rsc);
+    })
+    .set_root(rsc, ui_state);
+}