forked from mirrors/gecko-dev
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/* -*- 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;
|
|
using mozilla::LayoutDeviceIntRect;
|
|
using mozilla::Maybe;
|
|
|
|
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;
|
|
Maybe<Shmem> maybeShm = nsContentUtils::GetSurfaceData(dataSurface,
|
|
&length,
|
|
&stride,
|
|
child);
|
|
if (maybeShm.isNothing()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
auto surfaceData = maybeShm.value();
|
|
|
|
// 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;
|
|
}
|