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/data_display/carousel.rs

@@ -4,9 +4,9 @@ use std::{
 };
 
 use gpui::{
-    AnyElement, App, Div, ElementId, InteractiveElement, IntoElement, MouseButton, ParentElement,
-    RenderOnce, StatefulInteractiveElement, StyleRefinement, Styled, Task, Window, div, prelude::*,
-    relative,
+    AnyElement, App, Div, ElementId, HoverListenerMode, InteractiveElement, IntoElement,
+    MouseButton, ParentElement, RenderOnce, StatefulInteractiveElement, StyleRefinement, Styled,
+    Task, Window, div, prelude::*, relative,
 };
 
 use crate::{
@@ -268,6 +268,7 @@ impl RenderOnce for Carousel {
             .flex()
             .flex_col()
             .gap_2()
+            .hover_listener_mode(HoverListenerMode::InputModalityIndependent)
             .on_hover(move |hovered, _, cx| {
                 hover.update(cx, |deck, cx| {
                     deck.hovered = *hovered;

src/data_display/tests.rs

@@ -161,6 +161,9 @@ fn wait(time: Duration, cx: &mut VisualTestContext) {
 #[gpui::test]
 fn autoplay_turns_the_carousel_and_holds_while_pointed_at(cx: &mut TestAppContext) {
     let (places, cx) = deck(cx);
+    // The pointer starts at the corner, over the deck, which gpui now counts as a hover.
+    cx.simulate_mouse_move(point(px(600.0), px(400.0)), None, Modifiers::none());
+    settle(cx);
     assert_eq!(front(&places), Some(0));
     wait(Duration::from_secs(5), cx);
     assert_eq!(front(&places), Some(1), "five seconds turn it once");
@@ -174,6 +177,17 @@ fn autoplay_turns_the_carousel_and_holds_while_pointed_at(cx: &mut TestAppContex
     assert_eq!(front(&places), Some(2));
 }
 
+#[gpui::test]
+fn a_key_under_a_resting_pointer_keeps_the_carousel_held(cx: &mut TestAppContext) {
+    let (places, cx) = deck(cx);
+    cx.simulate_mouse_move(point(px(100.0), px(50.0)), None, Modifiers::none());
+    settle(cx);
+    cx.simulate_keystrokes("a");
+    settle(cx);
+    wait(Duration::from_secs(12), cx);
+    assert_eq!(front(&places), Some(0), "still held");
+}
+
 #[gpui::test]
 fn left_from_the_first_slide_wraps_to_the_last(cx: &mut TestAppContext) {
     let (places, cx) = deck(cx);