feat : initial implementation icon gesture support (#5266)

- closes : #2787
- closes : #5259

src/com/android/launcher3/Workspace.java

@@ -146,6 +146,7 @@ import app.lawnchair.LawnchairApp;
 import app.lawnchair.LawnchairAppKt;
 import app.lawnchair.preferences.PreferenceManager;
 import app.lawnchair.preferences2.PreferenceManager2;
+import app.lawnchair.smartspace.DoubleShadowTextView;
 import app.lawnchair.smartspace.SmartspaceAppWidgetProvider;
 import app.lawnchair.smartspace.model.LawnchairSmartspace;
 import app.lawnchair.smartspace.model.SmartspaceMode;
@@ -1205,12 +1206,50 @@ public class Workspace<T extends View & PageIndicator> extends PagedView<T>
      */
     @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
+        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+            View touchedView = findViewAtPosition(ev.getX(), ev.getY());
+            if (touchedView instanceof ShortcutAndWidgetContainer container) {
+                container.onTouchEvent(ev);
+                return false;
+            }
+        }
+
         if (isTrackpadMultiFingerSwipe(ev)) {
             return false;
         }
         return super.onInterceptTouchEvent(ev);
     }
 
+    private View findViewAtPosition(float x, float y) {
+        for (int i = 0; i < getChildCount(); i++) {
+            View child = getChildAt(i);
+            if (child instanceof CellLayout) {
+                CellLayout cellLayout = (CellLayout) child;
+                View foundView = findViewInCellLayout(cellLayout, x - child.getLeft(), y - child.getTop());
+                if (foundView != null) {
+                    return foundView;
+                }
+            }
+        }
+        return null;
+    }
+
+    private View findViewInCellLayout(CellLayout cellLayout, float x, float y) {
+        final int count = cellLayout.getChildCount();
+        for (int i = count - 1; i >= 0; i--) {
+            View child = cellLayout.getChildAt(i);
+            if (child.getVisibility() == VISIBLE && isPointInsideView(x, y, child)) {
+                return child;
+            }
+        }
+        return null;
+    }
+
+    private boolean isPointInsideView(float x, float y, View view) {
+        return x >= view.getLeft() && x <= view.getRight() &&
+                y >= view.getTop() && y <= view.getBottom();
+    }
+
     /**
      * Needed here because launcher has a fullscreen exclusion rect and doesn't
      * pilfer the pointers.