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/****************************************************************************
**
** Copyright (C) 1999-2003 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//==============================================================================
// Includes
//==============================================================================
#ifndef INCLUDED_DROPSOURCE
#define INCLUDED_DROPSOURCE
#include "UICDMHandles.h"
#include "Pt.h"
#include "Cmd.h"
#include <QMimeData>
typedef enum _EDROPDESTINATION {
EDROPDESTINATION_ON, ///< drop occurs on the target asset
EDROPDESTINATION_ABOVE, ///< drop occurs above the target asset
EDROPDESTINATION_BELOW ///< drop occurs below the target asset
} EDROPDESTINATION;
class CDropTarget;
class IDragable;
class CStudioApp;
class CDropSource : public QMimeData
{
protected:
long m_Flavor;
unsigned long m_Size;
UICDM::TInstanceHandleList m_Instances;
long m_ObjectType;
bool m_HasValidTarget;
CPt m_CurrentPoint;
Qt::KeyboardModifiers m_CurrentFlags;
public:
CDropSource(long inFlavor, unsigned long inSize);
virtual ~CDropSource();
virtual bool CanMove() = 0;
virtual bool CanCopy() = 0;
long GetObjectType() const { return m_ObjectType; }
long GetFlavor() const { return m_Flavor; }
virtual bool ValidateTarget(CDropTarget *) = 0;
virtual bool GetHasValidTarget() const { return m_HasValidTarget; }
virtual void SetHasValidTarget(bool inValid) { m_HasValidTarget = inValid; }
virtual void InterpretKeyFlags(long) {}
virtual void SetCurrentPoint(CPt &inPoint) { m_CurrentPoint = inPoint; }
virtual CPt GetCurrentPoint() const { return m_CurrentPoint; }
virtual void SetCurrentFlags(Qt::KeyboardModifiers inFlags) { m_CurrentFlags = inFlags; }
virtual Qt::KeyboardModifiers GetCurrentFlags() const { return m_CurrentFlags; }
virtual CCmd *GenerateAssetCommand(UICDM::CUICDMInstanceHandle, EDROPDESTINATION,
UICDM::CUICDMSlideHandle)
{
return nullptr;
}
virtual CCmd *GenerateSlideCommand(long) { return nullptr; }
};
class CDropSourceFactory
{
public:
static CDropSource *Create(long inFlavor, IDragable *inDragable);
static CDropSource *Create(long inFlavor, void *inData, unsigned long inSize);
static CDropSource *Extract(long inFlavor, void *inData, unsigned long inSize);
};
#endif
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