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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 */
#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 {
explicit nsScreen(nsPIDOMWindowInner* aWindow);
nsPIDOMWindowInner* GetParentObject() const { return GetOwner(); }
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();
uint16_t GetOrientationAngle() const;
mozilla::hal::ScreenOrientation GetOrientationType() const;
// Deprecated
void GetMozOrientation(nsString& aOrientation,
mozilla::dom::CallerType aCallerType) const;
// 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();
nsDeviceContext* GetDeviceContext() const;
mozilla::CSSIntRect GetRect();
mozilla::CSSIntRect GetAvailRect();
mozilla::CSSIntRect GetWindowInnerRect();
virtual ~nsScreen();
bool ShouldResistFingerprinting(mozilla::RFPTarget aTarget) const;
mozilla::dom::Document* TopContentDocumentInRDMPane() const;
RefPtr<mozilla::dom::ScreenOrientation> mScreenOrientation;
#endif /* nsScreen_h___ */