/* -*- 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; }