зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.8 KiB
C++
88 строки
2.8 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 "mozilla/dom/Document.h"
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#include "mozilla/dom/BrowserChild.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::CSSIntRegion;
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using mozilla::LayoutDeviceIntRect;
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using mozilla::Maybe;
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using mozilla::dom::BrowserChild;
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using mozilla::gfx::DataSourceSurface;
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using mozilla::gfx::SourceSurface;
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using mozilla::gfx::SurfaceFormat;
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using mozilla::ipc::Shmem;
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nsDragServiceProxy::nsDragServiceProxy() {}
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nsDragServiceProxy::~nsDragServiceProxy() {}
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nsresult nsDragServiceProxy::InvokeDragSessionImpl(
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nsIArray* aArrayTransferables, const Maybe<CSSIntRegion>& aRegion,
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uint32_t aActionType) {
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NS_ENSURE_STATE(mSourceDocument->GetDocShell());
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BrowserChild* child = BrowserChild::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(
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aArrayTransferables, dataTransfers, false, child->Manager(), nullptr);
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nsCOMPtr<nsIPrincipal> principal;
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if (mSourceNode) {
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principal = mSourceNode->NodePrincipal();
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}
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nsCOMPtr<nsIContentSecurityPolicy> csp;
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if (mSourceDocument) {
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csp = mSourceDocument->GetCsp();
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}
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LayoutDeviceIntRect dragRect;
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if (mHasImage || mSelection) {
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nsPresContext* pc;
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RefPtr<SourceSurface> surface;
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DrawDrag(mSourceNode, aRegion, mScreenPosition, &dragRect, &surface, &pc);
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if (surface) {
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RefPtr<DataSourceSurface> dataSurface = 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(
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dataSurface, &length, &stride, 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 << child->SendInvokeDragSession(
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dataTransfers, aActionType, Some(std::move(surfaceData)), stride,
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dataSurface->GetFormat(), dragRect, principal, csp);
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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(
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dataTransfers, aActionType, Nothing(), 0, static_cast<SurfaceFormat>(0),
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dragRect, principal, csp);
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StartDragSession();
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return NS_OK;
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}
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