widget/ScreenManager.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_widget_ScreenManager_h
   8 #define mozilla_widget_ScreenManager_h
   9
  10 #include "nsIScreenManager.h"
  11
  12 #include "mozilla/RefPtr.h"
  13 #include "mozilla/UniquePtr.h"
  14 #include "mozilla/widget/Screen.h"
  15 #include "nsTArray.h"
  16
  17 namespace mozilla {
  18 namespace dom {
  19 class ContentParent;
  20 class ScreenDetails;
  21 }  // namespace dom
  22 }  // namespace mozilla
  23
  24 namespace mozilla::widget {
  25
  26 class ScreenManager final : public nsIScreenManager {
  27  public:
  28   class Helper {
  29    public:
  30     virtual ~Helper() = default;
  31   };
  32
  33  public:
  34   NS_DECL_ISUPPORTS
  35   NS_DECL_NSISCREENMANAGER
  36
  37   static ScreenManager& GetSingleton();
  38   static already_AddRefed<ScreenManager> GetAddRefedSingleton();
  39
  40   void SetHelper(UniquePtr<Helper> aHelper);
  41   static void Refresh(nsTArray<RefPtr<Screen>>&& aScreens);
  42   void Refresh(nsTArray<mozilla::dom::ScreenDetails>&& aScreens);
  43   void CopyScreensToRemote(mozilla::dom::ContentParent* aContentParent);
  44   already_AddRefed<Screen> GetPrimaryScreen();
  45   already_AddRefed<Screen> ScreenForRect(const DesktopIntRect& aRect);
  46
  47   const nsTArray<RefPtr<Screen>>& CurrentScreenList() const {
  48     return mScreenList;
  49   }
  50
  51  private:
  52   ScreenManager();
  53   virtual ~ScreenManager();
  54
  55   void RefreshInternal(nsTArray<RefPtr<Screen>>&& aScreens);
  56   template <class Range>
  57   void CopyScreensToRemoteRange(Range aRemoteRange);
  58   void CopyScreensToAllRemotesIfIsParent();
  59
  60   AutoTArray<RefPtr<Screen>, 4> mScreenList;
  61   UniquePtr<Helper> mHelper;
  62 };
  63
  64 }  // namespace mozilla::widget
  65
  66 #endif  // mozilla_widget_ScreenManager_h