[gnome-shell/gbsneto/custom-icon-positions: 2/28] appDisplay: Ignore dragging over leeways

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit f49ab6d38c72e808a391ff57e9d6f32158e9d1b9
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon May 25 16:00:23 2020 -0300

    appDisplay: Ignore dragging over leeways
    
    The leeways are parts of the icon that ignore incoming drag
    events. This is how IconGrid and IconGridLayout treat it, and
    this is how the icons should treat themselves too.
    
    Make AppIcon ignore dragging over the left and right leeways.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284

 js/ui/appDisplay.js | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index eadbe9bb4c..6ae3f0eb5a 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -2212,24 +2212,37 @@ var AppIcon = GObject.registerClass({
         return DND.DragMotionResult.CONTINUE;
     }
 
-    handleDragOver(source) {
+    _withinLeeways(x) {
+        return x < IconGrid.LEFT_DIVIDER_LEEWAY ||
+            x > this.width - IconGrid.RIGHT_DIVIDER_LEEWAY;
+    }
+
+    handleDragOver(source, _actor, x) {
         if (source == this)
             return DND.DragMotionResult.NO_DROP;
 
         if (!this._canAccept(source))
             return DND.DragMotionResult.CONTINUE;
 
+        if (this._withinLeeways(x)) {
+            this._setHoveringByDnd(false);
+            return DND.DragMotionResult.CONTINUE;
+        }
+
         this._setHoveringByDnd(true);
 
         return DND.DragMotionResult.MOVE_DROP;
     }
 
-    acceptDrop(source) {
+    acceptDrop(source, _actor, x) {
         this._setHoveringByDnd(false);
 
         if (!this._canAccept(source))
             return false;
 
+        if (this._withinLeeways(x))
+            return false;
+
         let view = _getViewFromIcon(this);
         let apps = [this.id, source.id];