gecko/widget/nsDragServiceProxy.cpp

85 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"
NS_IMPL_ISUPPORTS_INHERITED0(nsDragServiceProxy, nsBaseDragService)
nsDragServiceProxy::nsDragServiceProxy()
{
}
nsDragServiceProxy::~nsDragServiceProxy()
{
}
NS_IMETHODIMP
nsDragServiceProxy::InvokeDragSession(nsIDOMNode* aDOMNode,
nsISupportsArray* aArrayTransferables,
nsIScriptableRegion* aRegion,
uint32_t aActionType)
{
nsresult rv = nsBaseDragService::InvokeDragSession(aDOMNode,
aArrayTransferables,
aRegion,
aActionType);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMDocument> sourceDocument;
aDOMNode->GetOwnerDocument(getter_AddRefs(sourceDocument));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(sourceDocument);
NS_ENSURE_STATE(doc->GetDocShell());
mozilla::dom::TabChild* child =
mozilla::dom::TabChild::GetFrom(doc->GetDocShell());
NS_ENSURE_STATE(child);
nsTArray<mozilla::dom::IPCDataTransfer> dataTransfers;
nsContentUtils::TransferablesToIPCTransferables(aArrayTransferables,
dataTransfers,
child->Manager(),
nullptr);
if (mHasImage || mSelection) {
nsIntRect dragRect;
nsPresContext* pc;
mozilla::RefPtr<mozilla::gfx::SourceSurface> surface;
DrawDrag(mSourceNode, aRegion, mScreenX, mScreenY,
&dragRect, &surface, &pc);
if (surface) {
mozilla::RefPtr<mozilla::gfx::DataSourceSurface> dataSurface =
surface->GetDataSurface();
mozilla::gfx::IntSize size = dataSurface->GetSize();
size_t length;
int32_t stride;
mozilla::UniquePtr<char[]> surfaceData =
nsContentUtils::GetSurfaceData(dataSurface, &length, &stride);
nsDependentCString dragImage(surfaceData.get(), length);
mozilla::unused <<
child->SendInvokeDragSession(dataTransfers, aActionType, dragImage,
size.width, size.height, stride,
static_cast<uint8_t>(dataSurface->GetFormat()),
dragRect.x, dragRect.y);
StartDragSession();
return NS_OK;
}
}
mozilla::unused << child->SendInvokeDragSession(dataTransfers, aActionType,
nsCString(),
0, 0, 0, 0, 0, 0);
StartDragSession();
return NS_OK;
}