Adding the flip windows button to the browser window

chrome/browser/ui/views/frame/browser_frame_win.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 "chrome/browser/ui/views/frame/browser_frame_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <set>
@@ skipping 14 matching lines @@
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/browser_accessibility_state.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/page_transition_types.h"
 #include "googleurl/src/gurl.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/models/simple_menu_model.h"
+#include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/font.h"
 #include "ui/views/controls/menu/native_menu_win.h"
 #include "ui/views/views_delegate.h"
 #include "ui/views/widget/native_widget_win.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/non_client_view.h"
 #include "webkit/glue/window_open_disposition.h"
 
 #pragma comment(lib, "dwmapi.lib")
 
 // static
 static const int kClientEdgeThickness = 3;
 static const int kTabDragWindowAlpha = 200;
 // We need to offset the DWMFrame into the toolbar so that the blackness
 // doesn't show up on our rounded corners.
 static const int kDWMFrameTopOffset = 3;
 // If not -1, windows are shown with this state.
 static int explicit_show_state = -1;
 
 using content::OpenURLParams;
 using content::Referrer;
 using content::WebContents;
 
 #if !defined(USE_AURA)
 extern "C" {
+// Windows metro exported functions from metro_driver.
 typedef void (*SetFrameWindow)(HWND window);
 typedef void (*CloseFrameWindow)(HWND window);
+typedef void (*FlipFrameWindows)();
 }
 #endif  // USE_AURA
 
+views::Button* MakeWindowSwitcherButton(views::ButtonListener* listener) {
+  views::ImageButton* switcher_button = new views::ImageButton(listener);
+  switcher_button->SetImage(
+      views::ImageButton::BS_NORMAL,
+      ui::ResourceBundle::GetSharedInstance().GetBitmapNamed(
+          IDR_PAGEINFO_WARNING_MINOR));
+  // TODO(cpu): Replace IDR_PAGEINFO_WARNING_MINOR with actual image.
+  switcher_button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
+                                     views::ImageButton::ALIGN_MIDDLE);
+  return switcher_button;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserFrameWin, public:
 
 BrowserFrameWin::BrowserFrameWin(BrowserFrame* browser_frame,
                                  BrowserView* browser_view)
     : views::NativeWidgetWin(browser_frame),
       browser_view_(browser_view),
       browser_frame_(browser_frame),
       system_menu_delegate_(new SystemMenuModelDelegate(browser_view,
           browser_view->browser())) {
+  if (base::win::GetMetroModule())
+    browser_view->SetWindowSwitcherButton(MakeWindowSwitcherButton(this));
 }
 
 BrowserFrameWin::~BrowserFrameWin() {
 }
 
 // static
 void BrowserFrameWin::SetShowState(int state) {
   explicit_show_state = state;
 }
 
@@ skipping 170 matching lines @@
                                 titlebar_info.rgrect[2].top);
   MapWindowPoints(HWND_DESKTOP, GetNativeView(), &minimize_button_corner, 1);
 
   return minimize_button_corner.x;
 }
 
 void BrowserFrameWin::TabStripDisplayModeChanged() {
   UpdateDWMFrame();
 }
 
+void BrowserFrameWin::ButtonPressed(views::Button* sender,
+                                    const views::Event& event) {
+  HMODULE metro = base::win::GetMetroModule();
+  if (!metro)
+    return;
+  // Tell the metro_driver to flip our window. This causes the current
+  // browser window to be hidden and the next window to be shown.
+  static FlipFrameWindows flip_window_fn = reinterpret_cast<FlipFrameWindows>(
+      ::GetProcAddress(metro, "FlipFrameWindows"));
+  if (flip_window_fn)
+    flip_window_fn();
+}
+
 LRESULT BrowserFrameWin::OnWndProc(UINT message,
                                    WPARAM w_param,
                                    LPARAM l_param) {
   static const UINT metro_navigation_search_message =
       RegisterWindowMessage(chrome::kMetroNavigationAndSearchMessage);
 
   static const UINT metro_get_current_tab_info_message =
       RegisterWindowMessage(chrome::kMetroGetCurrentTabInfoMessage);
 
   if (message == metro_navigation_search_message) {
@@ skipping 192 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeBrowserFrame, public:
 
 // static
 NativeBrowserFrame* NativeBrowserFrame::CreateNativeBrowserFrame(
     BrowserFrame* browser_frame,
     BrowserView* browser_view) {
   return new BrowserFrameWin(browser_frame, browser_view);
 }