chrome/browser/fullscreen_win.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/fullscreen.h"
   6
   7 #include <windows.h>
   8 #include <shellapi.h>
   9
  10 #include "base/logging.h"
  11 #include "base/win/windows_version.h"
  12
  13 #if defined(USE_ASH)
  14 #include "ash/wm/window_util.h"
  15 #include "chrome/browser/ui/host_desktop.h"
  16 #endif
  17
  18 static bool IsPlatformFullScreenMode() {
  19   // SHQueryUserNotificationState is only available for Vista and above.
  20 #if defined(NTDDI_VERSION) && (NTDDI_VERSION >= NTDDI_VISTA)
  21   if (base::win::GetVersion() < base::win::VERSION_VISTA)
  22     return false;
  23
  24   typedef HRESULT(WINAPI *SHQueryUserNotificationStatePtr)(
  25       QUERY_USER_NOTIFICATION_STATE* state);
  26
  27   HMODULE shell32_base = ::GetModuleHandle(L"shell32.dll");
  28   if (!shell32_base) {
  29     NOTREACHED();
  30     return false;
  31   }
  32   SHQueryUserNotificationStatePtr query_user_notification_state_ptr =
  33         reinterpret_cast<SHQueryUserNotificationStatePtr>
  34             (::GetProcAddress(shell32_base, "SHQueryUserNotificationState"));
  35   if (!query_user_notification_state_ptr) {
  36     NOTREACHED();
  37     return false;
  38   }
  39
  40   QUERY_USER_NOTIFICATION_STATE state;
  41   if (FAILED((*query_user_notification_state_ptr)(&state)))
  42     return false;
  43   return state == QUNS_RUNNING_D3D_FULL_SCREEN ||
  44          state == QUNS_PRESENTATION_MODE;
  45 #else
  46   return false;
  47 #endif
  48 }
  49
  50 static bool IsFullScreenWindowMode() {
  51   // Get the foreground window which the user is currently working on.
  52   HWND wnd = ::GetForegroundWindow();
  53   if (!wnd)
  54     return false;
  55
  56   // Get the monitor where the window is located.
  57   RECT wnd_rect;
  58   if (!::GetWindowRect(wnd, &wnd_rect))
  59     return false;
  60   HMONITOR monitor = ::MonitorFromRect(&wnd_rect, MONITOR_DEFAULTTONULL);
  61   if (!monitor)
  62     return false;
  63   MONITORINFO monitor_info = { sizeof(monitor_info) };
  64   if (!::GetMonitorInfo(monitor, &monitor_info))
  65     return false;
  66
  67   // It should be the main monitor.
  68   if (!(monitor_info.dwFlags & MONITORINFOF_PRIMARY))
  69     return false;
  70
  71   // The window should be at least as large as the monitor.
  72   if (!::IntersectRect(&wnd_rect, &wnd_rect, &monitor_info.rcMonitor))
  73     return false;
  74   if (!::EqualRect(&wnd_rect, &monitor_info.rcMonitor))
  75     return false;
  76
  77   // At last, the window style should not have WS_DLGFRAME and WS_THICKFRAME and
  78   // its extended style should not have WS_EX_WINDOWEDGE and WS_EX_TOOLWINDOW.
  79   LONG style = ::GetWindowLong(wnd, GWL_STYLE);
  80   LONG ext_style = ::GetWindowLong(wnd, GWL_EXSTYLE);
  81   return !((style & (WS_DLGFRAME | WS_THICKFRAME)) ||
  82            (ext_style & (WS_EX_WINDOWEDGE | WS_EX_TOOLWINDOW)));
  83 }
  84
  85 static bool IsFullScreenConsoleMode() {
  86   // We detect this by attaching the current process to the console of the
  87   // foreground window and then checking if it is in full screen mode.
  88   DWORD pid = 0;
  89   ::GetWindowThreadProcessId(::GetForegroundWindow(), &pid);
  90   if (!pid)
  91     return false;
  92
  93   if (!::AttachConsole(pid))
  94     return false;
  95
  96   DWORD modes = 0;
  97   ::GetConsoleDisplayMode(&modes);
  98   ::FreeConsole();
  99
 100   return (modes & (CONSOLE_FULLSCREEN | CONSOLE_FULLSCREEN_HARDWARE)) != 0;
 101 }
 102
 103 bool IsFullScreenMode() {
 104 #if defined(USE_ASH)
 105   if (chrome::GetActiveDesktop() == chrome::HOST_DESKTOP_TYPE_ASH)
 106     return ash::wm::IsActiveWindowFullscreen();
 107 #endif
 108   return IsPlatformFullScreenMode() ||
 109          IsFullScreenWindowMode() ||
 110          IsFullScreenConsoleMode();
 111 }