Relayout windows in overview when display size changes.

ash/wm/overview/window_selector_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
@@ skipping 1126 matching lines @@
   ToggleOverview();
   WindowSelectorItem* window_item = GetWindowItems()->back();
   views::Widget* widget = GetLabelWidget(window_item);
   // Has the label widget been created?
   ASSERT_TRUE(widget);
   views::Label* label = static_cast<views::Label*>(widget->GetContentsView());
   // Verify the label matches the active window title.
   EXPECT_EQ(label->text(), panel1_title);
 }
 
+// Tests that overview updates the window postions if the display orientation
+// changes.
+TEST_F(WindowSelectorTest, DisplayOrientationChanged) {
+  if (!SupportsHostWindowResize())
+    return;
+
+  aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
+  UpdateDisplay("600x200");
+  EXPECT_EQ("0,0 600x200", root_window->bounds().ToString());
+  gfx::Rect window_bounds(0, 0, 150, 150);
+  ScopedVector<aura::Window> windows;
+  for (int i = 0; i < 3; i++) {
+    windows.push_back(CreateWindow(window_bounds));
+  }
+
+  ToggleOverview();
+  for (ScopedVector<aura::Window>::iterator iter = windows.begin();
+       iter != windows.end(); ++iter) {
+    EXPECT_TRUE(root_window->bounds().Contains(
+        ToEnclosingRect(GetTransformedTargetBounds(*iter))));
+  }
+
+  // Rotate the display, windows should be repositioned to be within the screen
+  // bounds.
+  UpdateDisplay("600x200/r");
+  EXPECT_EQ("0,0 200x600", root_window->bounds().ToString());
+  for (ScopedVector<aura::Window>::iterator iter = windows.begin();
+       iter != windows.end(); ++iter) {
+    EXPECT_TRUE(root_window->bounds().Contains(
+        ToEnclosingRect(GetTransformedTargetBounds(*iter))));
+  }
+}
+
 }  // namespace ash