nsScreen.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

#ifndef nsScreen_h___

#define nsScreen_h___

#include "mozilla/dom/ScreenBinding.h"

#include "mozilla/dom/ScreenLuminance.h"

#include "mozilla/dom/ScreenOrientation.h"

#include "mozilla/DOMEventTargetHelper.h"

#include "mozilla/StaticPrefs_media.h"

#include "Units.h"

class nsDeviceContext;

namespace mozilla {

enum class RFPTarget : uint64_t;

// Script "screen" object

class nsScreen : public mozilla::DOMEventTargetHelper {

 public:

  explicit nsScreen(nsPIDOMWindowInner* aWindow);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsScreen,

                                           mozilla::DOMEventTargetHelper)

  nsIGlobalObject* GetParentObject() const { return GetOwnerGlobal(); }

  nsPIDOMWindowOuter* GetOuter() const;

  int32_t Top() { return GetRect().y; }

  int32_t Left() { return GetRect().x; }

  int32_t Width() { return GetRect().Width(); }

  int32_t Height() { return GetRect().Height(); }

  int32_t AvailTop() { return GetAvailRect().y; }

  int32_t AvailLeft() { return GetAvailRect().x; }

  int32_t AvailWidth() { return GetAvailRect().Width(); }

  int32_t AvailHeight() { return GetAvailRect().Height(); }

  int32_t PixelDepth();

  int32_t ColorDepth() { return PixelDepth(); }

  // Media Capabilities extension

  mozilla::dom::ScreenColorGamut ColorGamut() const {

    return mozilla::dom::ScreenColorGamut::Srgb;

  already_AddRefed<mozilla::dom::ScreenLuminance> GetLuminance() const {

    return nullptr;

  static bool MediaCapabilitiesEnabled(JSContext* aCx, JSObject* aGlobal) {

    return mozilla::StaticPrefs::media_media_capabilities_screen_enabled();

  IMPL_EVENT_HANDLER(change);

  uint16_t GetOrientationAngle() const;

  mozilla::hal::ScreenOrientation GetOrientationType() const;

  // Deprecated

  void GetMozOrientation(nsString& aOrientation,

                         mozilla::dom::CallerType aCallerType) const;

  IMPL_EVENT_HANDLER(mozorientationchange)

  // This function is deprecated, use ScreenOrientation API instead.

  bool MozLockOrientation(const nsAString&) { return false; };

  bool MozLockOrientation(const mozilla::dom::Sequence<nsString>&) {

    return false;

  void MozUnlockOrientation() {}

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  mozilla::dom::ScreenOrientation* Orientation() const;

  mozilla::dom::ScreenOrientation* GetOrientationIfExists() const {

    return mScreenOrientation.get();

 protected:

  nsDeviceContext* GetDeviceContext() const;

  mozilla::CSSIntRect GetRect();

  mozilla::CSSIntRect GetAvailRect();

  mozilla::CSSIntRect GetTopWindowInnerRectForRFP();

 private:

  virtual ~nsScreen();

  bool ShouldResistFingerprinting(mozilla::RFPTarget aTarget) const;

  mozilla::dom::Document* TopContentDocumentInRDMPane() const;

  RefPtr<mozilla::dom::ScreenOrientation> mScreenOrientation;

};

#endif /* nsScreen_h___ */