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-rw-r--r--widget/nsDragServiceProxy.cpp81
1 files changed, 81 insertions, 0 deletions
diff --git a/widget/nsDragServiceProxy.cpp b/widget/nsDragServiceProxy.cpp
new file mode 100644
index 000000000..7005a3e0b
--- /dev/null
+++ b/widget/nsDragServiceProxy.cpp
@@ -0,0 +1,81 @@
+/* -*- 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 "nsDragServiceProxy.h"
+#include "nsIDocument.h"
+#include "nsISupportsPrimitives.h"
+#include "mozilla/dom/TabChild.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "nsContentUtils.h"
+
+using mozilla::ipc::Shmem;
+using mozilla::dom::TabChild;
+using mozilla::dom::OptionalShmem;
+
+NS_IMPL_ISUPPORTS_INHERITED0(nsDragServiceProxy, nsBaseDragService)
+
+nsDragServiceProxy::nsDragServiceProxy()
+{
+}
+
+nsDragServiceProxy::~nsDragServiceProxy()
+{
+}
+
+nsresult
+nsDragServiceProxy::InvokeDragSessionImpl(nsIArray* aArrayTransferables,
+ nsIScriptableRegion* aRegion,
+ uint32_t aActionType)
+{
+ nsCOMPtr<nsIDocument> doc = do_QueryInterface(mSourceDocument);
+ NS_ENSURE_STATE(doc->GetDocShell());
+ TabChild* child = TabChild::GetFrom(doc->GetDocShell());
+ NS_ENSURE_STATE(child);
+ nsTArray<mozilla::dom::IPCDataTransfer> dataTransfers;
+ nsContentUtils::TransferablesToIPCTransferables(aArrayTransferables,
+ dataTransfers,
+ false,
+ child->Manager(),
+ nullptr);
+
+ LayoutDeviceIntRect dragRect;
+ if (mHasImage || mSelection) {
+ nsPresContext* pc;
+ RefPtr<mozilla::gfx::SourceSurface> surface;
+ DrawDrag(mSourceNode, aRegion, mScreenPosition, &dragRect, &surface, &pc);
+
+ if (surface) {
+ RefPtr<mozilla::gfx::DataSourceSurface> dataSurface =
+ surface->GetDataSurface();
+ if (dataSurface) {
+ size_t length;
+ int32_t stride;
+ Shmem surfaceData;
+ nsContentUtils::GetSurfaceData(dataSurface, &length, &stride, child,
+ &surfaceData);
+ // Save the surface data to shared memory.
+ if (!surfaceData.IsReadable() || !surfaceData.get<char>()) {
+ NS_WARNING("Failed to create shared memory for drag session.");
+ return NS_ERROR_FAILURE;
+ }
+
+ mozilla::Unused <<
+ child->SendInvokeDragSession(dataTransfers, aActionType, surfaceData,
+ stride, static_cast<uint8_t>(dataSurface->GetFormat()),
+ dragRect);
+ StartDragSession();
+ return NS_OK;
+ }
+ }
+ }
+
+ mozilla::Unused << child->SendInvokeDragSession(dataTransfers, aActionType,
+ mozilla::void_t(), 0, 0, dragRect);
+ StartDragSession();
+ return NS_OK;
+}