feat(desktop-gpui): add editor watch-preview overlay

apps/desktop-gpui/src/assets.rs

@@ -159,6 +159,7 @@ const ICONS: &[(&str, &[u8])] = assets!("icons":
     "download.svg",
     "flip-vertical-2.svg",
     "maximize.svg",
+    "minimize.svg",
     "mouse-pointer-2.svg",
     "mouse-pointer-ban.svg",
     "move.svg",
@@ -334,6 +335,7 @@ mod tests {
         include_str!("editor_clips.rs"),
         // The export page's destination cards and share-status glyphs.
         include_str!("editor_export.rs"),
+        include_str!("editor_watch.rs"),
         // The screenshot editor's toolbar, popovers and zoom HUD; the
         // annotation module names the tool and layer glyphs.
         include_str!("screenshot_editor.rs"),

apps/desktop-gpui/src/editor_canvas.rs

@@ -506,7 +506,10 @@ impl EditorWindow {
     /// `overlayVisible()` (`:238`): only while paused, and only once the
     /// renderer has reported a layout.
     pub(crate) fn canvas_overlay_visible(&self) -> bool {
-        !self.playing && self.frame_layout.is_some() && self.crop.is_none()
+        !self.playing
+            && self.frame_layout.is_some()
+            && self.crop.is_none()
+            && !self.watch_preview_open
     }
 
     fn scene_mode_at(&self, time: f64) -> SceneMode {

apps/desktop-gpui/src/editor_crop.rs

@@ -1509,6 +1509,7 @@ impl EditorWindow {
         if self.crop.is_some() {
             return;
         }
+        self.dismiss_watch_preview(cx);
         let Some(target) = self.display_resolution() else {
             tracing::warn!("crop: no display recording to crop");
             return;

apps/desktop-gpui/src/editor_export.rs

@@ -526,6 +526,7 @@ impl EditorWindow {
     }
 
     pub(crate) fn open_export(&mut self, window: &mut Window, cx: &mut Context<Self>) {
+        self.dismiss_watch_preview(cx);
         if self.playing {
             self.toggle_play_from_crop(cx);
         }