From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: stransky <stransky@redhat.com>
Date: Wed, 10 Jul 2024 10:59:53 +0000
Subject: [PATCH] Bug 1898476 [Wayland] Provide surface lock by
 GtkCompositorWidget r=emilio

Depends on D214883

Differential Revision: https://phabricator.services.mozilla.com/D214884
---
 widget/gtk/GtkCompositorWidget.cpp | 4 ++++
 widget/gtk/GtkCompositorWidget.h   | 4 ++++
 widget/gtk/nsWindow.cpp            | 7 +++++++
 widget/gtk/nsWindow.h              | 3 +++
 4 files changed, 18 insertions(+)

diff --git a/widget/gtk/GtkCompositorWidget.cpp b/widget/gtk/GtkCompositorWidget.cpp
index 50eb90a0c860..65b9dd3f49e0 100644
--- a/widget/gtk/GtkCompositorWidget.cpp
+++ b/widget/gtk/GtkCompositorWidget.cpp
@@ -211,5 +211,9 @@ bool GtkCompositorWidget::IsPopup() {
 }
 #endif
 
+UniquePtr<MozContainerSurfaceLock> GtkCompositorWidget::LockSurface() {
+  return mWidget->LockSurface();
+}
+
 }  // namespace widget
 }  // namespace mozilla
diff --git a/widget/gtk/GtkCompositorWidget.h b/widget/gtk/GtkCompositorWidget.h
index d4834247f16d..8d56f35a561c 100644
--- a/widget/gtk/GtkCompositorWidget.h
+++ b/widget/gtk/GtkCompositorWidget.h
@@ -10,6 +10,8 @@
 #include "mozilla/DataMutex.h"
 #include "mozilla/widget/CompositorWidget.h"
 #include "WindowSurfaceProvider.h"
+#include "mozilla/UniquePtr.h"
+#include "MozContainerSurfaceLock.h"
 
 class nsIWidget;
 class nsWindow;
@@ -96,6 +98,8 @@ class GtkCompositorWidget : public CompositorWidget,
   void NotifyClientSizeChanged(const LayoutDeviceIntSize& aClientSize) override;
   GtkCompositorWidget* AsGtkCompositorWidget() override { return this; }
 
+  UniquePtr<MozContainerSurfaceLock> LockSurface();
+
  private:
 #if defined(MOZ_WAYLAND)
   void ConfigureWaylandBackend();
diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp
index 297149796986..28c0cb2641e2 100644
--- a/widget/gtk/nsWindow.cpp
+++ b/widget/gtk/nsWindow.cpp
@@ -10218,3 +10218,10 @@ void nsWindow::SetDragSource(GdkDragContext* aSourceDragContext) {
     }
   }
 }
+
+UniquePtr<MozContainerSurfaceLock> nsWindow::LockSurface() {
+  if (mIsDestroyed) {
+    return nullptr;
+  }
+  return MakeUnique<MozContainerSurfaceLock>(mContainer);
+}
diff --git a/widget/gtk/nsWindow.h b/widget/gtk/nsWindow.h
index 1dd1f1dce8f4..98cec928817f 100644
--- a/widget/gtk/nsWindow.h
+++ b/widget/gtk/nsWindow.h
@@ -13,6 +13,7 @@
 
 #include "CompositorWidget.h"
 #include "MozContainer.h"
+#include "MozContainerSurfaceLock.h"
 #include "VsyncSource.h"
 #include "mozilla/EventForwards.h"
 #include "mozilla/Maybe.h"
@@ -422,6 +423,8 @@ class nsWindow final : public nsBaseWidget {
 
   static nsWindow* GetFocusedWindow();
 
+  mozilla::UniquePtr<MozContainerSurfaceLock> LockSurface();
+
 #ifdef MOZ_WAYLAND
   // Use xdg-activation protocol to transfer focus from gFocusWindow to aWindow.
   static void TransferFocusToWaylandWindow(nsWindow* aWindow);