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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/base/nsScreen.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/base/nsScreen.cpp')
-rw-r--r--dom/base/nsScreen.cpp186
1 files changed, 186 insertions, 0 deletions
diff --git a/dom/base/nsScreen.cpp b/dom/base/nsScreen.cpp
new file mode 100644
index 0000000000..fc832fd2cf
--- /dev/null
+++ b/dom/base/nsScreen.cpp
@@ -0,0 +1,186 @@
+/* -*- 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/. */
+
+#include "nsContentUtils.h"
+#include "nsScreen.h"
+#include "mozilla/dom/Document.h"
+#include "nsGlobalWindowInner.h"
+#include "nsGlobalWindowOuter.h"
+#include "nsIDocShell.h"
+#include "nsPresContext.h"
+#include "nsCOMPtr.h"
+#include "nsIDocShellTreeItem.h"
+#include "nsLayoutUtils.h"
+#include "nsDeviceContext.h"
+#include "mozilla/widget/ScreenManager.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsScreen::nsScreen(nsPIDOMWindowInner* aWindow)
+ : DOMEventTargetHelper(aWindow),
+ mScreenOrientation(new ScreenOrientation(aWindow, this)) {}
+
+nsScreen::~nsScreen() = default;
+
+// QueryInterface implementation for nsScreen
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsScreen)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_ADDREF_INHERITED(nsScreen, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(nsScreen, DOMEventTargetHelper)
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(nsScreen, DOMEventTargetHelper,
+ mScreenOrientation)
+
+int32_t nsScreen::PixelDepth() {
+ // Return 24 to prevent fingerprinting.
+ if (ShouldResistFingerprinting(RFPTarget::ScreenPixelDepth)) {
+ return 24;
+ }
+ nsDeviceContext* context = GetDeviceContext();
+ if (NS_WARN_IF(!context)) {
+ return 24;
+ }
+ return context->GetDepth();
+}
+
+nsPIDOMWindowOuter* nsScreen::GetOuter() const {
+ if (nsPIDOMWindowInner* inner = GetOwner()) {
+ return inner->GetOuterWindow();
+ }
+ return nullptr;
+}
+
+nsDeviceContext* nsScreen::GetDeviceContext() const {
+ return nsLayoutUtils::GetDeviceContextForScreenInfo(GetOuter());
+}
+
+CSSIntRect nsScreen::GetRect() {
+ // Return window inner rect to prevent fingerprinting.
+ if (ShouldResistFingerprinting(RFPTarget::ScreenRect)) {
+ return GetWindowInnerRect();
+ }
+
+ // Here we manipulate the value of aRect to represent the screen size,
+ // if in RDM.
+ if (nsPIDOMWindowInner* owner = GetOwner()) {
+ if (Document* doc = owner->GetExtantDoc()) {
+ Maybe<CSSIntSize> deviceSize =
+ nsGlobalWindowOuter::GetRDMDeviceSize(*doc);
+ if (deviceSize.isSome()) {
+ const CSSIntSize& size = deviceSize.value();
+ return {0, 0, size.width, size.height};
+ }
+ }
+ }
+
+ nsDeviceContext* context = GetDeviceContext();
+ if (NS_WARN_IF(!context)) {
+ return {};
+ }
+
+ nsRect r;
+ context->GetRect(r);
+ return CSSIntRect::FromAppUnitsRounded(r);
+}
+
+CSSIntRect nsScreen::GetAvailRect() {
+ // Return window inner rect to prevent fingerprinting.
+ if (ShouldResistFingerprinting(RFPTarget::ScreenAvailRect)) {
+ return GetWindowInnerRect();
+ }
+
+ // Here we manipulate the value of aRect to represent the screen size,
+ // if in RDM.
+ if (nsPIDOMWindowInner* owner = GetOwner()) {
+ if (Document* doc = owner->GetExtantDoc()) {
+ Maybe<CSSIntSize> deviceSize =
+ nsGlobalWindowOuter::GetRDMDeviceSize(*doc);
+ if (deviceSize.isSome()) {
+ const CSSIntSize& size = deviceSize.value();
+ return {0, 0, size.width, size.height};
+ }
+ }
+ }
+
+ nsDeviceContext* context = GetDeviceContext();
+ if (NS_WARN_IF(!context)) {
+ return {};
+ }
+
+ nsRect r;
+ context->GetClientRect(r);
+ return CSSIntRect::FromAppUnitsRounded(r);
+}
+
+uint16_t nsScreen::GetOrientationAngle() const {
+ nsDeviceContext* context = GetDeviceContext();
+ if (context) {
+ return context->GetScreenOrientationAngle();
+ }
+ RefPtr<widget::Screen> s =
+ widget::ScreenManager::GetSingleton().GetPrimaryScreen();
+ return s->GetOrientationAngle();
+}
+
+hal::ScreenOrientation nsScreen::GetOrientationType() const {
+ nsDeviceContext* context = GetDeviceContext();
+ if (context) {
+ return context->GetScreenOrientationType();
+ }
+ RefPtr<widget::Screen> s =
+ widget::ScreenManager::GetSingleton().GetPrimaryScreen();
+ return s->GetOrientationType();
+}
+
+ScreenOrientation* nsScreen::Orientation() const { return mScreenOrientation; }
+
+void nsScreen::GetMozOrientation(nsString& aOrientation,
+ CallerType aCallerType) const {
+ switch (mScreenOrientation->DeviceType(aCallerType)) {
+ case OrientationType::Portrait_primary:
+ aOrientation.AssignLiteral("portrait-primary");
+ break;
+ case OrientationType::Portrait_secondary:
+ aOrientation.AssignLiteral("portrait-secondary");
+ break;
+ case OrientationType::Landscape_primary:
+ aOrientation.AssignLiteral("landscape-primary");
+ break;
+ case OrientationType::Landscape_secondary:
+ aOrientation.AssignLiteral("landscape-secondary");
+ break;
+ default:
+ MOZ_CRASH("Unacceptable screen orientation type.");
+ }
+}
+
+/* virtual */
+JSObject* nsScreen::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return Screen_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+CSSIntRect nsScreen::GetWindowInnerRect() {
+ nsCOMPtr<nsPIDOMWindowInner> win = GetOwner();
+ if (!win) {
+ return {};
+ }
+ double width;
+ double height;
+ if (NS_FAILED(win->GetInnerWidth(&width)) ||
+ NS_FAILED(win->GetInnerHeight(&height))) {
+ return {};
+ }
+ return {0, 0, int32_t(std::round(width)), int32_t(std::round(height))};
+}
+
+bool nsScreen::ShouldResistFingerprinting(RFPTarget aTarget) const {
+ nsCOMPtr<nsPIDOMWindowInner> owner = GetOwner();
+ return owner &&
+ nsGlobalWindowInner::Cast(owner)->ShouldResistFingerprinting(aTarget);
+}