From 859c0f53cb5449c0c358af1af04f6233ed3bd6d7 Mon Sep 17 00:00:00 2001
From: Antonio Scandurra <me@as-cii.com>
Date: Mon, 22 Mar 2021 18:55:53 +0100
Subject: [PATCH] WIP: Introduce layers in renderer

Co-Authored-By: Nathan Sobo <nathan@zed.dev>
---
 gpui/src/elements/stack.rs |  2 ++
 gpui/src/scene.rs          | 16 +++++++++-------
 zed/src/file_finder.rs     |  6 +-----
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/gpui/src/elements/stack.rs b/gpui/src/elements/stack.rs
index 0d6858118d..f0d33e3afc 100644
--- a/gpui/src/elements/stack.rs
+++ b/gpui/src/elements/stack.rs
@@ -49,7 +49,9 @@ impl Element for Stack {
         ctx: &mut PaintContext,
     ) -> Self::PaintState {
         for child in &mut self.children {
+            ctx.scene.push_layer();
             child.paint(bounds.origin(), ctx);
+            ctx.scene.pop_layer();
         }
     }
 
diff --git a/gpui/src/scene.rs b/gpui/src/scene.rs
index 1ac8654cdb..ce73837c69 100644
--- a/gpui/src/scene.rs
+++ b/gpui/src/scene.rs
@@ -56,14 +56,16 @@ impl Scene {
         self.layers.as_slice()
     }
 
-    // pub fn push_layer(&mut self, clip_bounds: Option<RectF>) {
+    pub fn push_layer(&mut self) {
+        let ix = self.layers.len();
+        self.layers.push(Layer::default());
+        self.active_layer_stack.push(ix);
+    }
 
-    // }
-
-    // pub fn pop_layer(&mut self) {
-    //     assert!(self.active_layer_stack.len() > 1);
-    //     self.active_layer_stack.pop();
-    // }
+    pub fn pop_layer(&mut self) {
+        assert!(self.active_layer_stack.len() > 1);
+        self.active_layer_stack.pop();
+    }
 
     pub fn push_quad(&mut self, quad: Quad) {
         self.active_layer().push_quad(quad)
diff --git a/zed/src/file_finder.rs b/zed/src/file_finder.rs
index c57b33c631..45b4cff164 100644
--- a/zed/src/file_finder.rs
+++ b/zed/src/file_finder.rs
@@ -70,11 +70,7 @@ impl View for FileFinder {
                 .with_uniform_padding(6.0)
                 .with_corner_radius(6.0)
                 .with_background_color(ColorU::new(0xf2, 0xf2, 0xf2, 0xff))
-                .with_shadow(
-                    vec2f(0.0, 4.0),
-                    12.0,
-                    ColorF::new(0.0, 0.0, 0.0, 0.25).to_u8(),
-                )
+                .with_shadow(vec2f(0., 4.), 12., ColorF::new(0.0, 0.0, 0.0, 0.25).to_u8())
                 .boxed(),
             )
             .with_max_width(600.0)