gecko-dev/widget/nsIScreenManager.idl

/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"
#include "nsIScreen.idl"

%{C++
#include "nsCOMPtr.h"
%}

[scriptable, uuid(e8a96e60-6b61-4a14-bacc-53891604b502)]
interface nsIScreenManager : nsISupports
{
  // Returns the screen that contains the rectangle. If the rect overlaps
  // multiple screens, it picks the screen with the greatest area of intersection.
  //
  // The coordinates are in pixels (not twips) and in screen coordinates.
  nsIScreen screenForRect(in long left, in long top, in long width, in long height) ;

%{C++
  already_AddRefed<nsIScreen> ScreenForRect(const mozilla::DesktopIntRect& aRect) {
    nsCOMPtr<nsIScreen> screen;
    ScreenForRect(aRect.x, aRect.y, aRect.width, aRect.height, getter_AddRefs(screen));
    return screen.forget();
  }
%}

  // The screen with the menubar/taskbar. This shouldn't be needed very often.
  readonly attribute nsIScreen primaryScreen;

  // The total number of pixels across all monitors.
  readonly attribute int64_t totalScreenPixels;
};