Fix incorrect accessibility announcement on two panel home

- Divide total pages by panelCount if two panel is active
- Increment target column when moving an item to right panel

Test: manual
Bug: 200009004
Change-Id: Ia8d2d760dc5e8b413e5b1150c049f7fa3ec26513

src/com/android/launcher3/CellLayout.java

@@ -1169,9 +1169,7 @@ public class CellLayout extends ViewGroup {
         // Apply local extracted color if the DragView is an AppWidgetHostViewDrawable.
         View view = dragObject.dragView.getContentView();
         if (view instanceof LauncherAppWidgetHostView) {
-            Launcher launcher = Launcher.getLauncher(getContext());
+            int screenId = getWorkspace().getIdForScreen(this);
-            Workspace workspace = launcher.getWorkspace();
-            int screenId = workspace.getIdForScreen(this);
             cellToRect(targetCell[0], targetCell[1], spanX, spanY, mTempRect);
 
             ((LauncherAppWidgetHostView) view).handleDrag(mTempRect, this, screenId);
@@ -1184,11 +1182,24 @@ public class CellLayout extends ViewGroup {
             return getContext().getString(R.string.move_to_hotseat_position,
                     Math.max(cellX, cellY) + 1);
         } else {
-            return getContext().getString(R.string.move_to_empty_cell,
+            Workspace workspace = getWorkspace();
-                    cellY + 1, cellX + 1);
+            int row = cellY + 1;
+            int col = workspace.mIsRtl ? mCountX - cellX : cellX + 1;
+            int panelCount = workspace.getPanelCount();
+            if (panelCount > 1) {
+                // Increment the column if the target is on the right side of a two panel home
+                int screenId = workspace.getIdForScreen(this);
+                int pageIndex = workspace.getPageIndexForScreenId(screenId);
+                col += (pageIndex % panelCount) * mCountX;
+            }
+            return getContext().getString(R.string.move_to_empty_cell, row, col);
         }
     }
 
+    private Workspace getWorkspace() {
+        return Launcher.cast(mActivity).getWorkspace();
+    }
+
     public void clearDragOutlines() {
         final int oldIndex = mDragOutlineCurrent;
         mDragOutlineAnims[oldIndex].animateOut();
@@ -2243,7 +2254,7 @@ public class CellLayout extends ViewGroup {
     private void commitTempPlacement(View dragView) {
         mTmpOccupied.copyTo(mOccupied);
 
-        int screenId = Launcher.cast(mActivity).getWorkspace().getIdForScreen(this);
+        int screenId = getWorkspace().getIdForScreen(this);
         int container = Favorites.CONTAINER_DESKTOP;
 
         if (mContainerType == HOTSEAT) {

src/com/android/launcher3/Workspace.java

@@ -3398,7 +3398,10 @@ public class Workspace extends PagedView<WorkspacePageIndicator>
             // When the workspace is not loaded, we do not know how many screen will be bound.
             return getContext().getString(R.string.home_screen);
         }
-        return getContext().getString(R.string.workspace_scroll_format, page + 1, nScreens);
+        int panelCount = getPanelCount();
+        int currentPage = (page / panelCount) + 1;
+        int totalPages = nScreens / panelCount + nScreens % panelCount;
+        return getContext().getString(R.string.workspace_scroll_format, currentPage, totalPages);
     }
 
     /**