Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/widget/gtk/WindowSurfaceProvider.cpp b/widget/gtk/WindowSurfaceProvider.cpp
new file mode 100644
index 0000000000..faf147a80a
--- /dev/null
+++ b/widget/gtk/WindowSurfaceProvider.cpp
@@ -0,0 +1,202 @@
+/* -*- Mode: C++; tab-width: 4; 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 "WindowSurfaceProvider.h"
+
+#include "gfxPlatformGtk.h"
+#include "GtkCompositorWidget.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/LayersTypes.h"
+#include "nsWindow.h"
+
+#ifdef MOZ_WAYLAND
+#  include "mozilla/StaticPrefs_widget.h"
+#  include "WindowSurfaceWaylandMultiBuffer.h"
+#endif
+#ifdef MOZ_X11
+#  include "mozilla/X11Util.h"
+#  include "WindowSurfaceX11Image.h"
+#  include "WindowSurfaceX11SHM.h"
+#endif
+
+#undef LOG
+#ifdef MOZ_LOGGING
+#  include "mozilla/Logging.h"
+#  include "nsTArray.h"
+#  include "Units.h"
+extern mozilla::LazyLogModule gWidgetLog;
+#  define LOG(args) MOZ_LOG(gWidgetLog, mozilla::LogLevel::Debug, args)
+#else
+#  define LOG(args)
+#endif /* MOZ_LOGGING */
+
+namespace mozilla {
+namespace widget {
+
+using namespace mozilla::layers;
+
+WindowSurfaceProvider::WindowSurfaceProvider()
+    : mWindowSurface(nullptr),
+      mMutex("WindowSurfaceProvider"),
+      mWindowSurfaceValid(false)
+#ifdef MOZ_X11
+      ,
+      mIsShaped(false),
+      mXDepth(0),
+      mXWindow(0),
+      mXVisual(nullptr)
+#endif
+{
+}
+
+#ifdef MOZ_WAYLAND
+void WindowSurfaceProvider::Initialize(RefPtr<nsWindow> aWidget) {
+  mWindowSurfaceValid = false;
+  mWidget = std::move(aWidget);
+}
+void WindowSurfaceProvider::Initialize(GtkCompositorWidget* aCompositorWidget) {
+  mWindowSurfaceValid = false;
+  mCompositorWidget = aCompositorWidget;
+  mWidget = static_cast<nsWindow*>(aCompositorWidget->RealWidget());
+}
+#endif
+#ifdef MOZ_X11
+void WindowSurfaceProvider::Initialize(Window aWindow, Visual* aVisual,
+                                       int aDepth, bool aIsShaped) {
+  mWindowSurfaceValid = false;
+  mXWindow = aWindow;
+  mXVisual = aVisual;
+  mXDepth = aDepth;
+  mIsShaped = aIsShaped;
+}
+#endif
+
+void WindowSurfaceProvider::CleanupResources() {
+  MutexAutoLock lock(mMutex);
+  mWindowSurfaceValid = false;
+#ifdef MOZ_WAYLAND
+  mWidget = nullptr;
+#endif
+#ifdef MOZ_X11
+  mXWindow = 0;
+  mXVisual = 0;
+  mXDepth = 0;
+  mIsShaped = false;
+#endif
+}
+
+RefPtr<WindowSurface> WindowSurfaceProvider::CreateWindowSurface() {
+#ifdef MOZ_WAYLAND
+  if (GdkIsWaylandDisplay()) {
+    // We're called too early or we're unmapped.
+    if (!mWidget) {
+      return nullptr;
+    }
+    return MakeRefPtr<WindowSurfaceWaylandMB>(mWidget, mCompositorWidget);
+  }
+#endif
+#ifdef MOZ_X11
+  if (GdkIsX11Display()) {
+    // We're called too early or we're unmapped.
+    if (!mXWindow) {
+      return nullptr;
+    }
+    // Blit to the window with the following priority:
+    // 1. MIT-SHM
+    // 2. XPutImage
+#  ifdef MOZ_HAVE_SHMIMAGE
+    if (!mIsShaped && nsShmImage::UseShm()) {
+      LOG(("Drawing to Window 0x%lx will use MIT-SHM\n", mXWindow));
+      return MakeRefPtr<WindowSurfaceX11SHM>(DefaultXDisplay(), mXWindow,
+                                             mXVisual, mXDepth);
+    }
+#  endif  // MOZ_HAVE_SHMIMAGE
+
+    LOG(("Drawing to Window 0x%lx will use XPutImage\n", mXWindow));
+    return MakeRefPtr<WindowSurfaceX11Image>(DefaultXDisplay(), mXWindow,
+                                             mXVisual, mXDepth, mIsShaped);
+  }
+#endif
+  MOZ_RELEASE_ASSERT(false);
+}
+
+already_AddRefed<gfx::DrawTarget>
+WindowSurfaceProvider::StartRemoteDrawingInRegion(
+    const LayoutDeviceIntRegion& aInvalidRegion,
+    layers::BufferMode* aBufferMode) {
+  if (aInvalidRegion.IsEmpty()) {
+    return nullptr;
+  }
+
+  MutexAutoLock lock(mMutex);
+
+  if (!mWindowSurfaceValid) {
+    mWindowSurface = nullptr;
+    mWindowSurfaceValid = true;
+  }
+
+  if (!mWindowSurface) {
+    mWindowSurface = CreateWindowSurface();
+    if (!mWindowSurface) {
+      return nullptr;
+    }
+  }
+
+  *aBufferMode = BufferMode::BUFFER_NONE;
+  RefPtr<gfx::DrawTarget> dt = mWindowSurface->Lock(aInvalidRegion);
+#ifdef MOZ_X11
+  if (!dt && GdkIsX11Display() && !mWindowSurface->IsFallback()) {
+    // We can't use WindowSurfaceX11Image fallback on Wayland but
+    // Lock() call on WindowSurfaceWayland should never fail.
+    gfxWarningOnce()
+        << "Failed to lock WindowSurface, falling back to XPutImage backend.";
+    mWindowSurface = MakeRefPtr<WindowSurfaceX11Image>(
+        DefaultXDisplay(), mXWindow, mXVisual, mXDepth, mIsShaped);
+    dt = mWindowSurface->Lock(aInvalidRegion);
+  }
+#endif
+  return dt.forget();
+}
+
+void WindowSurfaceProvider::EndRemoteDrawingInRegion(
+    gfx::DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) {
+  MutexAutoLock lock(mMutex);
+  // Commit to mWindowSurface only if we have a valid one.
+  if (!mWindowSurface || !mWindowSurfaceValid) {
+    return;
+  }
+#if defined(MOZ_WAYLAND)
+  if (GdkIsWaylandDisplay()) {
+    // We're called too early or we're unmapped.
+    // Don't draw anything.
+    if (!mWidget || !mWidget->IsMapped()) {
+      return;
+    }
+    if (moz_container_wayland_is_commiting_to_parent(
+            mWidget->GetMozContainer())) {
+      // If we're drawing directly to wl_surface owned by Gtk we need to use it
+      // in main thread to sync with Gtk access to it.
+      NS_DispatchToMainThread(NS_NewRunnableFunction(
+          "WindowSurfaceProvider::EndRemoteDrawingInRegion",
+          [widget = RefPtr{mWidget}, this, aInvalidRegion]() {
+            if (!widget->IsMapped()) {
+              return;
+            }
+            MutexAutoLock lock(mMutex);
+            // Commit to mWindowSurface only when we have a valid one.
+            if (mWindowSurface && mWindowSurfaceValid) {
+              mWindowSurface->Commit(aInvalidRegion);
+            }
+          }));
+      return;
+    }
+  }
+#endif
+  mWindowSurface->Commit(aInvalidRegion);
+}
+
+}  // namespace widget
+}  // namespace mozilla