1 files changed, 147 insertions, 0 deletions
diff --git a/widget/gtk/GtkCompositorWidget.cpp b/widget/gtk/GtkCompositorWidget.cpp
new file mode 100644
index 0000000000..bfb970ec47
--- /dev/null
+++ b/widget/gtk/GtkCompositorWidget.cpp
@@ -0,0 +1,147 @@
+/* -*- Mode: C++; tab-width: 2; 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 "GtkCompositorWidget.h"
+
+#include "gfxPlatformGtk.h"
+#include "mozilla/layers/CompositorThread.h"
+#include "mozilla/widget/InProcessCompositorWidget.h"
+#include "mozilla/widget/PlatformWidgetTypes.h"
+#include "nsWindow.h"
+
+namespace mozilla {
+namespace widget {
+
+GtkCompositorWidget::GtkCompositorWidget(
+    const GtkCompositorWidgetInitData& aInitData,
+    const layers::CompositorOptions& aOptions, nsWindow* aWindow)
+    : CompositorWidget(aOptions),
+      mWidget(aWindow),
+      mClientSize("GtkCompositorWidget::mClientSize") {
+#if defined(MOZ_WAYLAND)
+  if (!aInitData.IsX11Display()) {
+    if (!aWindow) {
+      NS_WARNING("GtkCompositorWidget: We're missing nsWindow!");
+    }
+    mProvider.Initialize(aWindow);
+  }
+#endif
+#if defined(MOZ_X11)
+  if (aInitData.IsX11Display()) {
+    // If we have a nsWindow, then grab the already existing display connection
+    // If we don't, then use the init data to connect to the display
+    if (aWindow) {
+      mXDisplay = aWindow->XDisplay();
+    } else {
+      mXDisplay = XOpenDisplay(aInitData.XDisplayString().get());
+    }
+    mXWindow = (Window)aInitData.XWindow();
+
+    // Grab the window's visual and depth
+    XWindowAttributes windowAttrs;
+    if (!XGetWindowAttributes(mXDisplay, mXWindow, &windowAttrs)) {
+      NS_WARNING("GtkCompositorWidget(): XGetWindowAttributes() failed!");
+    }
+
+    Visual* visual = windowAttrs.visual;
+    mDepth = windowAttrs.depth;
+
+    // Initialize the window surface provider
+    mProvider.Initialize(mXDisplay, mXWindow, visual, mDepth,
+                         aInitData.Shaped());
+  }
+#endif
+  auto size = mClientSize.Lock();
+  *size = aInitData.InitialClientSize();
+}
+
+GtkCompositorWidget::~GtkCompositorWidget() {
+  mProvider.CleanupResources();
+
+#if defined(MOZ_X11)
+  // If we created our own display connection, we need to destroy it
+  if (!mWidget && mXDisplay) {
+    XCloseDisplay(mXDisplay);
+    mXDisplay = nullptr;
+  }
+#endif
+}
+
+already_AddRefed<gfx::DrawTarget> GtkCompositorWidget::StartRemoteDrawing() {
+  return nullptr;
+}
+void GtkCompositorWidget::EndRemoteDrawing() {}
+
+already_AddRefed<gfx::DrawTarget>
+GtkCompositorWidget::StartRemoteDrawingInRegion(
+    LayoutDeviceIntRegion& aInvalidRegion, layers::BufferMode* aBufferMode) {
+  return mProvider.StartRemoteDrawingInRegion(aInvalidRegion, aBufferMode);
+}
+
+void GtkCompositorWidget::EndRemoteDrawingInRegion(
+    gfx::DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) {
+  mProvider.EndRemoteDrawingInRegion(aDrawTarget, aInvalidRegion);
+}
+
+nsIWidget* GtkCompositorWidget::RealWidget() { return mWidget; }
+
+void GtkCompositorWidget::NotifyClientSizeChanged(
+    const LayoutDeviceIntSize& aClientSize) {
+  auto size = mClientSize.Lock();
+  *size = aClientSize;
+}
+
+LayoutDeviceIntSize GtkCompositorWidget::GetClientSize() {
+  auto size = mClientSize.Lock();
+  return *size;
+}
+
+uintptr_t GtkCompositorWidget::GetWidgetKey() {
+  return reinterpret_cast<uintptr_t>(mWidget);
+}
+
+EGLNativeWindowType GtkCompositorWidget::GetEGLNativeWindow() {
+  if (mWidget) {
+    return (EGLNativeWindowType)mWidget->GetNativeData(NS_NATIVE_EGL_WINDOW);
+  }
+#if defined(MOZ_X11)
+  if (mXWindow) {
+    return (EGLNativeWindowType)mXWindow;
+  }
+#endif
+  return nullptr;
+}
+
+int32_t GtkCompositorWidget::GetDepth() { return mDepth; }
+
+#if defined(MOZ_WAYLAND)
+void GtkCompositorWidget::SetEGLNativeWindowSize(
+    const LayoutDeviceIntSize& aEGLWindowSize) {
+  if (mWidget) {
+    mWidget->SetEGLNativeWindowSize(aEGLWindowSize);
+  }
+}
+#endif
+
+void GtkCompositorWidget::ClearBeforePaint(
+    RefPtr<gfx::DrawTarget> aTarget, const LayoutDeviceIntRegion& aRegion) {
+  // We need to clear target buffer alpha values of popup windows as
+  // SW-WR paints with alpha blending (see Bug 1674473).
+  if (mWidget->IsPopup()) {
+    for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
+      aTarget->ClearRect(gfx::Rect(iter.Get().ToUnknownRect()));
+    }
+  }
+
+  // Clear background of titlebar area to render titlebar
+  // transparent corners correctly.
+  gfx::Rect rect;
+  if (mWidget->GetTitlebarRect(rect)) {
+    aTarget->ClearRect(rect);
+  }
+}
+
+}  // namespace widget
+}  // namespace mozilla