widget/nsDragServiceProxy.cpp
author Eric Rahm <erahm@mozilla.com>
Sat, 01 Apr 2017 10:23:18 -0700
changeset 351286 c8e078d00d470a4da27a61425404de90782d9943
parent 318652 a8fd4f51596a460a2a5969329ac5d83eb86fb835
child 358425 54af3ab740d0723620f6e2b01d5c98e8f3a17b12
permissions -rw-r--r--
Bug 1353143 - Part 6: Remove prlog.h from mozilla/Logging.h. r=froydnj This removes NSPR logging references from mozilla logging. MozReview-Commit-ID: 8Zq2tbhdCv

/* -*- 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;
}