Port · Build: Zed's gpui at 1a28cff

gpui and gpui_platform now come from Zed's repo by git at 1a28cff,
the code gpui-pre 0.3.7 republishes, so the gallery can later build
for the browser. gpui takes stacker, as 0.2.2 always did, and
gpui_platform takes font-kit, without which macOS draws no text;
runtime_shaders moves to gpui_platform.

The API moved: focus, blur and Tab steps take cx, Corner is Anchor,
shaped lines paint with an alignment, defer_draw takes a content
mask, the inspector registers a factory, async updates return their
value, and wrapped lines are shared, not cloned. Updates through a
window context go through the window, so a closed window still ends
them as it did.

Where the new gpui behaves differently, Ely keeps its old intent.
Holds and reveals under a resting pointer survive typing through
gpui's input-modality-independent hover; previews the keyboard also
moves keep the default, and the calendar's leave ignores a key press.
Enter reaches a button inside the code editor, since gpui now arms a
key click on the press. The event logger skips a lone modifier. A
video and an image grid keep their shape in a flex column under
taffy 0.13, as a picture does.

AGENTS.md records the new stack and the rules this port changes; the
rest of the old gpui and taffy rules are re-tested in T44c.

src/canvas/mindmap_view.rs

@@ -198,7 +198,7 @@ impl RenderOnce for MindMap {
                     .cursor_pointer()
                     .on_mouse_down(MouseButton::Left, move |event, window, cx| {
                         cx.stop_propagation();
-                        window.focus(&hold);
+                        window.focus(&hold, cx);
                         if let Some(pick) = &pick {
                             pick(Some(&key), window, cx);
                         }
@@ -273,7 +273,7 @@ impl RenderOnce for MindMap {
                     if writing_tab.read(cx).field().is_some() {
                         cx.stop_propagation();
                         writing_tab.update(cx, |editing, cx| editing.finish(false, window, cx));
-                        window.focus(&back);
+                        window.focus(&back, cx);
                         return;
                     }
                     cx.stop_propagation();

src/canvas/tests/mod.rs

@@ -137,9 +137,9 @@ fn zoom(_: &Stage, owner: Entity<Stage>) -> AnyElement {
 fn the_zoom_buttons_step_and_the_percent_resets(cx: &mut TestAppContext) {
     let (host, cx) = stage(zoom, cx);
     for nth in [1, 2, 3] {
-        cx.update(|window, _| {
-            window.blur();
-            (0..nth).for_each(|_| window.focus_next());
+        cx.update(|window, cx| {
+            window.blur(cx);
+            (0..nth).for_each(|_| window.focus_next(cx));
         });
         cx.simulate_keystrokes("space");
         cx.simulate_event(gpui::KeyUpEvent {

src/canvas/tests/panels.rs

@@ -7,9 +7,9 @@ use crate::canvas::{
 };
 
 fn tab(stops: usize, cx: &mut VisualTestContext) {
-    cx.update(|window, _| {
-        window.blur();
-        (0..stops).for_each(|_| window.focus_next());
+    cx.update(|window, cx| {
+        window.blur(cx);
+        (0..stops).for_each(|_| window.focus_next(cx));
     });
     settle(cx);
 }

src/canvas/tools.rs

@@ -343,7 +343,7 @@ impl RenderOnce for ToolLayer {
             )
             .on_mouse_down(MouseButton::Left, move |event, window, cx| {
                 cx.stop_propagation();
-                window.focus(&held_focus);
+                window.focus(&held_focus, cx);
                 let bounds = pressed.read(cx).bounds;
                 let at = point_of(event.position, bounds);
                 let local = event.position - bounds.origin;

src/canvas/writing.rs

@@ -49,7 +49,7 @@ pub(super) fn field(editing: &Entity<Editing>, frame: Frame, cx: &App) -> Option
                     cx.stop_propagation();
                     closing.update(cx, |editing, cx| {
                         editing.finish(true, window, cx);
-                        editing.give_back(window);
+                        editing.give_back(window, cx);
                     });
                 }
             })
@@ -58,7 +58,7 @@ pub(super) fn field(editing: &Entity<Editing>, frame: Frame, cx: &App) -> Option
                     cx.stop_propagation();
                     keeping.update(cx, |editing, cx| {
                         editing.finish(false, window, cx);
-                        editing.give_back(window);
+                        editing.give_back(window, cx);
                     });
                 }
             })