Hook up a stub layout task to the display lister

src/servo/input.rs

@@ -1,17 +1,21 @@
 fn input(
     osmain_ch: comm::chan<osmain::msg>,
     draw_ch: comm::chan<gfx::renderer::msg>,
-    model_ch: comm::chan<layout::lister::msg>
+    model_ch: comm::chan<layout::lister::msg>,
+    layout_ch: comm::chan<layout::layout::msg>
 ) {
     task::spawn {||
         let key_po = comm::port();
         comm::send(osmain_ch, osmain::add_key_handler(comm::chan(key_po)));
         loop {
             alt comm::recv(key_po) {
               _ {
+                comm::send(layout_ch, layout::layout::exit);
                 comm::send(model_ch, layout::lister::exit);
+
                 let draw_exit_confirm_po = comm::port();
                 comm::send(draw_ch, gfx::renderer::exit(comm::chan(draw_exit_confirm_po)));
+
                 comm::recv(draw_exit_confirm_po);
                 comm::send(osmain_ch, osmain::exit);
                 break;

src/servo/layout/layout.rs

@@ -0,0 +1,22 @@
+import task::*;
+import comm::*;
+
+enum msg {
+    do_layout,
+    exit
+}
+
+fn layout(lister: chan<lister::msg>) -> chan<msg> {
+    spawn_listener::<msg> {|po|
+        loop {
+            alt recv(po) {
+              do_layout {
+                send(lister, lister::build)
+              }
+              exit {
+                break;
+              }
+            }
+        }
+    }
+}

src/servo/layout/lister.rs

@@ -18,7 +18,7 @@ enum msg {
 
 fn lister(renderer: chan<renderer::msg>) -> chan<msg> {
 
-    spawn_listener {|po|
+    spawn_listener::<msg> {|po|
         let mut x1 = 100;
         let mut y1 = 100;
         let mut w1 = 200;
@@ -28,38 +28,43 @@ fn lister(renderer: chan<renderer::msg>) -> chan<msg> {
         let mut w2 = 300;
         let mut h2 = 300;
 
-        while !peek(po) {
-            let dlist = [
-                display_item({
-                    item_type: solid_color,
-                    bounds: geom::box(
-                        int_to_au(x1),
-                        int_to_au(y1),
-                        int_to_au(w1),
-                        int_to_au(h1))
-                }),
-                display_item({
-                    item_type: solid_color,
-                    bounds: geom::box(
-                        int_to_au(x2),
-                        int_to_au(y2),
-                        int_to_au(w2),
-                        int_to_au(h2))
-                })
-            ];
+        loop {
+            alt recv(po) {
+              build {
+                let dlist = [
+                    display_item({
+                        item_type: solid_color,
+                        bounds: geom::box(
+                            int_to_au(x1),
+                            int_to_au(y1),
+                            int_to_au(w1),
+                            int_to_au(h1))
+                    }),
+                    display_item({
+                        item_type: solid_color,
+                        bounds: geom::box(
+                            int_to_au(x2),
+                            int_to_au(y2),
+                            int_to_au(w2),
+                            int_to_au(h2))
+                    })
+                ];
 
-            send(renderer, gfx::renderer::draw(dlist));
+                send(renderer, gfx::renderer::draw(dlist));
 
-            std::timer::sleep(100u);
-
-            x1 += 1;
-            y1 += 1;
-            x2 -= 1;
-            y2 -= 1;
-            if x1 > 800 { x1 = 0 }
-            if y1 > 600 { y1 = 0 }
-            if x2 < 0 { x2 = 800 }
-            if y2 < 0 { y2 = 600 }
+                x1 += 1;
+                y1 += 1;
+                x2 -= 1;
+                y2 -= 1;
+                if x1 > 800 { x1 = 0 }
+                if y1 > 600 { y1 = 0 }
+                if x2 < 0 { x2 = 800 }
+                if y2 < 0 { y2 = 600 }
+              }
+              exit {
+                break;
+              }
+            }
         }
     }
 

src/servo/servo.rc

@@ -31,6 +31,7 @@ mod layout {
     mod base;
     mod display_list;
     mod lister;
+    mod layout;
 }
 
 mod widget {

src/servo/servo.rs

@@ -1,3 +1,4 @@
+import comm::*;
 import libc::c_double;
 import azure::*;
 import azure::bindgen::*;
@@ -14,6 +15,14 @@ fn main() {
     // The display list builder
     let lister = layout::lister::lister(renderer);
 
+    // The layout task
+    let layout = layout::layout::layout(lister);
+
     // The keyboard handler
-    input::input(osmain_ch, renderer, lister);
+    input::input(osmain_ch, renderer, lister, layout);
+
+    loop {
+        std::timer::sleep(10u);
+        send(layout, layout::layout::do_layout);
+    }
 }