Aura: Switch window mode when screen resolution changes

ash/shell_unittest.cc

 // Copyright (c) 2012 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/ash_switches.h"
 #include "ash/launcher/launcher.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/aura_shell_test_base.h"
 #include "ash/wm/root_window_layout_manager.h"
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "ui/aura/test/aura_test_base.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/size.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 
+using aura::RootWindow;
+
 namespace ash {
 
 namespace {
 
 views::Widget* CreateTestWindow(const views::Widget::InitParams& params) {
   views::Widget* widget = new views::Widget;
   widget->Init(params);
   return widget;
 }
 
@@ skipping 245 matching lines @@
   views::Widget* lock_widget = CreateTestWindow(widget_params);
   ash::Shell::GetInstance()->GetContainer(
       ash::internal::kShellWindowId_LockScreenContainer)->
       AddChild(lock_widget->GetNativeView());
   lock_widget->Show();
   EXPECT_TRUE(Shell::GetInstance()->IsScreenLocked());
   lock_widget->Hide();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
 
   // A modal window with a lock window as parent does not lock the screen. The
-  // screen is locked only when a lock windown is visible.
+  // screen is locked only when a lock window is visible.
   views::Widget* lock_modal_widget = views::Widget::CreateWindowWithParent(
       new ModalWindow(), lock_widget->GetNativeView());
   lock_modal_widget->Show();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
   lock_widget->Show();
   EXPECT_TRUE(Shell::GetInstance()->IsScreenLocked());
   lock_modal_widget->Close();
   EXPECT_TRUE(Shell::GetInstance()->IsScreenLocked());
   lock_widget->Close();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
@@ skipping 37 matching lines @@
 }
 
 TEST_F(ShellTest, ChangeWindowMode) {
   // We start with the usual window containers.
   ExpectAllContainers();
   // We're not in compact window mode by default.
   Shell* shell = Shell::GetInstance();
   EXPECT_FALSE(shell->IsWindowModeCompact());
   // We have a default container event filter (for window drags).
   EXPECT_TRUE(GetDefaultContainer()->event_filter());
-  // We have a launcher.
-  EXPECT_TRUE(shell->launcher()->widget()->IsVisible());
+  // Launcher is visible.
+  views::Widget* launcher_widget = shell->launcher()->widget();
+  EXPECT_TRUE(launcher_widget->IsVisible());
+  // Launcher is at bottom-left of screen.
+  EXPECT_EQ(0, launcher_widget->GetWindowScreenBounds().x());
+  EXPECT_EQ(RootWindow::GetInstance()->GetHostSize().height(),
+            launcher_widget->GetWindowScreenBounds().bottom());
   // We have a desktop background.
   EXPECT_TRUE(shell->root_window_layout_->background_widget());
 
   // Create a normal window.  It is not maximized.
   views::Widget::InitParams widget_params(
       views::Widget::InitParams::TYPE_WINDOW);
   widget_params.bounds.SetRect(11, 22, 300, 400);
   views::Widget* widget = CreateTestWindow(widget_params);
   widget->Show();
   EXPECT_FALSE(widget->IsMaximized());
 
   // Set our new mode.
   shell->ChangeWindowMode(Shell::MODE_COMPACT);
   EXPECT_TRUE(shell->IsWindowModeCompact());
   // Compact mode does not use a default container event filter.
   EXPECT_FALSE(GetDefaultContainer()->event_filter());
   // We still have all the usual containers.
   ExpectAllContainers();
 
   // In compact window mode, all windows are maximized.
   EXPECT_TRUE(widget->IsMaximized());
   // Window bounds got updated to fill the work area.
   EXPECT_EQ(widget->GetWorkAreaBoundsInScreen(),
             widget->GetWindowScreenBounds());
   // Launcher is hidden.
-  EXPECT_FALSE(shell->launcher()->widget()->IsVisible());
+  EXPECT_FALSE(launcher_widget->IsVisible());
   // Desktop background is gone.
   EXPECT_FALSE(shell->root_window_layout_->background_widget());
 
   // Switch back to overlapping mode.
   shell->ChangeWindowMode(Shell::MODE_OVERLAPPING);
   EXPECT_FALSE(shell->IsWindowModeCompact());
   // Event filter came back.
   EXPECT_TRUE(GetDefaultContainer()->event_filter());
   // Launcher is visible again.
-  EXPECT_TRUE(shell->launcher()->widget()->IsVisible());
+  EXPECT_TRUE(launcher_widget->IsVisible());
+  // Launcher is at bottom-left of screen.
+  EXPECT_EQ(0, launcher_widget->GetWindowScreenBounds().x());
+  EXPECT_EQ(RootWindow::GetInstance()->GetHostSize().height(),
+            launcher_widget->GetWindowScreenBounds().bottom());
   // Desktop background is back.
   EXPECT_TRUE(shell->root_window_layout_->background_widget());
 
   // Clean up.
   widget->Close();
 }
 
+TEST_F(ShellTest, OnRootWindowResized) {
+  // We dynamically change window mode only with full-screen host windows.
+  AutoResetUseFullscreenHostWindow use_fullscreen_host_window(true);
+
+  // Switching to a large screen disables compact window mode.
+  RootWindow::GetInstance()->SetHostSize(gfx::Size(1920, 1080));
+  EXPECT_FALSE(Shell::GetInstance()->IsWindowModeCompact());
+
+  // Launcher is in the bottom-left corner of window.
+  views::Widget* launcher_widget = Shell::GetInstance()->launcher()->widget();
+  EXPECT_EQ(0, launcher_widget->GetWindowScreenBounds().x());
+  EXPECT_EQ(RootWindow::GetInstance()->GetHostSize().height(),
+            launcher_widget->GetWindowScreenBounds().bottom());
+
+  // Switching to a small screen enables compact window mode.
+  RootWindow::GetInstance()->SetHostSize(gfx::Size(1024, 768));
+  EXPECT_TRUE(Shell::GetInstance()->IsWindowModeCompact());
+
+  // Launcher is hidden.
+  EXPECT_FALSE(launcher_widget->IsVisible());
+}
+
 }  // namespace ash