Remove clipping when rendering tooltips

src/context.rs

@@ -1675,6 +1675,12 @@ impl<'a> PaintCx<'a> {
         self.clip = Some(rect);
     }
 
+    /// Remove clipping so the entire window can be rendered to.
+    pub fn clear_clip(&mut self) {
+        self.clip = None;
+        self.paint_state.renderer.clear_clip();
+    }
+
     pub fn offset(&mut self, offset: (f64, f64)) {
         let mut new = self.transform.as_coeffs();
         new[4] += offset.0;

src/views/tooltip.rs

@@ -4,7 +4,7 @@ use taffy::style::Display;
 
 use crate::{
     action::{exec_after, TimerToken},
-    context::{EventCx, StyleCx},
+    context::{EventCx, PaintCx, StyleCx},
     event::Event,
     id::Id,
     prop, prop_extracter,
@@ -138,4 +138,16 @@ impl View for Tooltip {
 
         default_event(self, cx, id_path, event)
     }
+
+    fn paint(&mut self, cx: &mut PaintCx) {
+        cx.paint_view(&mut self.child);
+
+        if self.visible {
+            // Remove clipping for the tooltip.
+            cx.save();
+            cx.clear_clip();
+            cx.paint_view(&mut self.tip);
+            cx.restore();
+        }
+    }
 }