blob: 2f84b3c9ce60d6e3cf86d40ff154f7fb7bfcaa74 [file] [log] [blame]
/*
* Copyright (C) 2007-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DragController.h"
#include "DataTransfer.h"
#include "Document.h"
#include "DragData.h"
#include "Element.h"
#include "Pasteboard.h"
#include "markup.h"
#include "windows.h"
namespace WebCore {
const int DragController::MaxOriginalImageArea = 1500 * 1500;
const int DragController::DragIconRightInset = 7;
const int DragController::DragIconBottomInset = 3;
const float DragController::DragImageAlpha = 0.75f;
std::optional<DragOperation> DragController::dragOperation(const DragData& dragData)
{
// FIXME: To match the macOS behaviour we should return std::nullopt.
// If we are a modal window, we are the drag source, or the window is an attached sheet.
// If this can be determined from within WebCore operationForDrag can be pulled into
// WebCore itself.
if (dragData.containsURL() && !m_didInitiateDrag)
return DragOperation::Copy;
return std::nullopt;
}
bool DragController::isCopyKeyDown(const DragData&)
{
return ::GetAsyncKeyState(VK_CONTROL);
}
const IntSize& DragController::maxDragImageSize()
{
static const IntSize maxDragImageSize(200, 200);
return maxDragImageSize;
}
void DragController::cleanupAfterSystemDrag()
{
}
void DragController::declareAndWriteDragImage(DataTransfer& dataTransfer, Element& element, const URL& url, const String& label)
{
Pasteboard& pasteboard = dataTransfer.pasteboard();
// FIXME: Do we really need this check?
if (!pasteboard.writableDataObject())
return;
// Order is important here for Explorer's sake
pasteboard.writeURLToWritableDataObject(url, label);
pasteboard.writeImageToDataObject(element, url);
pasteboard.writeMarkup(serializeFragment(element, SerializedNodes::SubtreeIncludingNode, nullptr, ResolveURLs::Yes));
}
}