зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
3.7 KiB
C++
111 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDragServiceProxy.h"
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#include "nsIDocument.h"
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#include "nsISupportsPrimitives.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/Unused.h"
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#include "nsContentUtils.h"
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using mozilla::ipc::Shmem;
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using mozilla::dom::TabChild;
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using mozilla::dom::OptionalShmem;
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using mozilla::LayoutDeviceIntRect;
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using mozilla::Maybe;
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nsDragServiceProxy::nsDragServiceProxy()
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{
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}
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nsDragServiceProxy::~nsDragServiceProxy()
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{
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}
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static void
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GetPrincipalURIFromNode(nsCOMPtr<nsIDOMNode>& sourceNode,
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nsCString& aPrincipalURISpec)
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{
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nsCOMPtr<nsINode> node = do_QueryInterface(sourceNode);
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if (!node) {
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return;
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}
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nsCOMPtr<nsIPrincipal> principal = node->NodePrincipal();
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nsCOMPtr<nsIURI> principalURI;
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nsresult rv = principal->GetURI(getter_AddRefs(principalURI));
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if (NS_FAILED(rv) || !principalURI) {
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return;
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}
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principalURI->GetSpec(aPrincipalURISpec);
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}
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nsresult
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nsDragServiceProxy::InvokeDragSessionImpl(nsIArray* aArrayTransferables,
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nsIScriptableRegion* aRegion,
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uint32_t aActionType)
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{
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NS_ENSURE_STATE(mSourceDocument->GetDocShell());
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TabChild* child = TabChild::GetFrom(mSourceDocument->GetDocShell());
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NS_ENSURE_STATE(child);
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nsTArray<mozilla::dom::IPCDataTransfer> dataTransfers;
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nsContentUtils::TransferablesToIPCTransferables(aArrayTransferables,
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dataTransfers,
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false,
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child->Manager(),
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nullptr);
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nsCString principalURISpec;
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GetPrincipalURIFromNode(mSourceNode, principalURISpec);
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LayoutDeviceIntRect dragRect;
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if (mHasImage || mSelection) {
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nsPresContext* pc;
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RefPtr<mozilla::gfx::SourceSurface> surface;
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DrawDrag(mSourceNode, aRegion, mScreenPosition, &dragRect, &surface, &pc);
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if (surface) {
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RefPtr<mozilla::gfx::DataSourceSurface> dataSurface =
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surface->GetDataSurface();
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if (dataSurface) {
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size_t length;
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int32_t stride;
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Maybe<Shmem> maybeShm = nsContentUtils::GetSurfaceData(dataSurface,
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&length,
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&stride,
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child);
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if (maybeShm.isNothing()) {
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return NS_ERROR_FAILURE;
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}
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auto surfaceData = maybeShm.value();
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// Save the surface data to shared memory.
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if (!surfaceData.IsReadable() || !surfaceData.get<char>()) {
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NS_WARNING("Failed to create shared memory for drag session.");
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return NS_ERROR_FAILURE;
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}
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mozilla::Unused <<
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child->SendInvokeDragSession(dataTransfers, aActionType, surfaceData,
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stride, dataSurface->GetFormat(),
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dragRect, principalURISpec);
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StartDragSession();
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return NS_OK;
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}
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}
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}
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mozilla::Unused << child->SendInvokeDragSession(dataTransfers, aActionType,
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mozilla::void_t(), 0, static_cast<gfx::SurfaceFormat>(0), dragRect,
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principalURISpec);
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StartDragSession();
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return NS_OK;
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}
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