70 lines
3 KiB
C++
70 lines
3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <sal/config.h>
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#include <com/sun/star/uno/Reference.hxx>
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#include <osl/mutex.hxx>
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namespace com::sun::star::datatransfer
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{
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class XTransferable;
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}
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#include <wtypes.h>
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#include <sal/types.h>
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// This maps key states as occur as parameter, e.g. in IDropTarget::DragEnter,
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// IDropSource::QueryContinueDrag, to actions as are declared in
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// css::datatransfer::dnd::DNDConstants ( ACTION_MOVE etc).
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// If the grfKeyState indicates the ALt or right mousebutton then the returned
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// values combines all possible actions. This is because those keys and buttons are
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// used when the user expect a menu to appear when he drops. The menu then
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// contains entries, such as move, copy, link, cancel.
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// An odd fact is that the argument grfKeyState in IDropTarget::Drop does not
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// contain mouse buttons (winnt 4 SP6). That indicates that the right mouse button
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// is not considered relevant in a drag operation. Contrarily the file explorer
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// gives that button a special meaning: the user has to select the effect from
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// a context menu on drop.
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sal_Int8 dndOleKeysToAction(DWORD grfKeyState, sal_Int8 sourceActions);
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// The function maps a windows DROPEFFECTs to actions
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// ( css::datatransfer::dnd::DNDConstants).
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// The argument can be a combination of different DROPEFFECTS,
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// In that case the return value is also a combination of the
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// appropriate actions.
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sal_Int8 dndOleDropEffectsToActions(DWORD dwEffect);
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// The function maps actions ( css::datatransfer::dnd::DNDConstants)
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// to window DROPEFFECTs.
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// The argument can be a combination of different actions
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// In that case the return value is also a combination of the
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// appropriate DROPEFFECTS.
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DWORD dndActionsToDropEffects(sal_Int8 actions);
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// If the argument constitutes only one action then it is mapped to the
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// corresponding DROPEFFECT otherwise DROPEFFECT_MOVE is returned. This is
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// why move is the default effect (no modifiers pressed, or right mouse button
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// or Alt).
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DWORD dndActionsToSingleDropEffect(sal_Int8 actions);
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extern css::uno::Reference<css::datatransfer::XTransferable> g_XTransferable;
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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