widget/windows/nsScreenManagerWin.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsScreenManagerWin_h___
   7 #define nsScreenManagerWin_h___
   8
   9 #include "nsIScreenManager.h"
  10
  11 #include <windows.h>
  12 #include "nsCOMPtr.h"
  13 #include "nsTArray.h"
  14 #include "mozilla/Attributes.h"
  15
  16 class nsIScreen;
  17
  18 //------------------------------------------------------------------------
  19
  20 class ScreenListItem
  21 {
  22 public:
  23   ScreenListItem ( HMONITOR inMon, nsIScreen* inScreen )
  24     : mMon(inMon), mScreen(inScreen) { } ;
  25
  26   HMONITOR mMon;
  27   nsCOMPtr<nsIScreen> mScreen;
  28 };
  29
  30 class nsScreenManagerWin MOZ_FINAL : public nsIScreenManager
  31 {
  32 public:
  33   nsScreenManagerWin ( );
  34   ~nsScreenManagerWin();
  35
  36   NS_DECL_ISUPPORTS
  37   NS_DECL_NSISCREENMANAGER
  38
  39 private:
  40
  41   nsIScreen* CreateNewScreenObject ( HMONITOR inScreen ) ;
  42
  43   uint32_t mNumberOfScreens;
  44
  45     // cache the screens to avoid the memory allocations
  46   nsAutoTArray<ScreenListItem, 8> mScreenList;
  47
  48 };
  49
  50 #endif  // nsScreenManagerWin_h___