[gnome-shell/wip/jimmac/dash-icon-spacing: 16/72] workspacesView: Snap horizontally when dragging windows

[Jakub Steiner <jimmac src gnome org>]

commit 233d166c774886d8a5ceb64f83bf21859eaa97dc
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Dec 29 18:51:03 2020 -0300

    workspacesView: Snap horizontally when dragging windows
    
    So that all workspaces are visible simultaneously, which allows
    moving application windows between workspaces.

 js/ui/workspacesView.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/js/ui/workspacesView.js b/js/ui/workspacesView.js
index 8b99c93ed0..dcd62bcbf6 100644
--- a/js/ui/workspacesView.js
+++ b/js/ui/workspacesView.js
@@ -566,11 +566,30 @@ class WorkspacesDisplay extends St.Widget {
 
     _windowDragBegin() {
         this._inWindowDrag = true;
+
+        const snapTransition = this._snapAdjustment.get_transition('value');
+        this._previousSnapAxis = snapTransition
+            ? snapTransition.get_interval().peek_final_value()
+            : this._snapAdjustment.value;
+        this._snapAdjustment.ease(Clutter.Orientation.HORIZONTAL, {
+            duration: ANIMATION_TIME,
+            mode: Clutter.AnimationMode.EASE_OUT_QUAD,
+        });
+
         this._updateSwipeTracker();
     }
 
     _windowDragEnd() {
         this._inWindowDrag = false;
+
+        const snapAxis = this._previousSnapAxis;
+        delete this._previousSnapAxis;
+
+        this._snapAdjustment.ease(snapAxis, {
+            duration: ANIMATION_TIME,
+            mode: Clutter.AnimationMode.EASE_OUT_QUAD,
+        });
+
         this._updateSwipeTracker();
     }