зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
3.8 KiB
C++
96 строки
3.8 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::DataSourceSurface::MappedSurface map;
|
|
dataSurface->Map(mozilla::gfx::DataSourceSurface::MapType::READ, &map);
|
|
mozilla::gfx::IntSize size = dataSurface->GetSize();
|
|
mozilla::CheckedInt32 requiredBytes =
|
|
mozilla::CheckedInt32(map.mStride) * mozilla::CheckedInt32(size.height);
|
|
size_t maxBufLen = requiredBytes.isValid() ? requiredBytes.value() : 0;
|
|
mozilla::gfx::SurfaceFormat format = dataSurface->GetFormat();
|
|
// Surface data handling is totally nuts. This is the magic one needs to
|
|
// know to access the data.
|
|
size_t bufLen =
|
|
maxBufLen - map.mStride + (size.width * BytesPerPixel(format));
|
|
|
|
// nsDependentCString wants null-terminated string.
|
|
mozilla::UniquePtr<char[]> dragImageData(new char[maxBufLen + 1]);
|
|
memcpy(dragImageData.get(), reinterpret_cast<char*>(map.mData), bufLen);
|
|
memset(dragImageData.get() + bufLen, 0, maxBufLen - bufLen + 1);
|
|
nsDependentCString dragImage(dragImageData.get(), maxBufLen);
|
|
|
|
mozilla::unused <<
|
|
child->SendInvokeDragSession(dataTransfers, aActionType, dragImage,
|
|
size.width, size.height, map.mStride,
|
|
static_cast<uint8_t>(format),
|
|
dragRect.x, dragRect.y);
|
|
dataSurface->Unmap();
|
|
StartDragSession();
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
mozilla::unused << child->SendInvokeDragSession(dataTransfers, aActionType,
|
|
nsCString(),
|
|
0, 0, 0, 0, 0, 0);
|
|
StartDragSession();
|
|
return NS_OK;
|
|
}
|