source: trunk/src/gui/kernel/qdnd_mac.mm@ 99

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** additional rights. These rights are described in the Nokia Qt LGPL
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
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#include "qapplication.h"
#ifndef QT_NO_DRAGANDDROP
#include "qbitmap.h"
#include "qcursor.h"
#include "qevent.h"
#include "qpainter.h"
#include "qurl.h"
#include "qwidget.h"
#include "qfile.h"
#include "qfileinfo.h"
#include <stdlib.h>
#include <string.h>
#ifndef QT_NO_ACCESSIBILITY
# include "qaccessible.h"
#endif

#include <private/qapplication_p.h>
#include <private/qwidget_p.h>
#include <private/qdnd_p.h>
#include <private/qt_mac_p.h>

QT_BEGIN_NAMESPACE

QT_USE_NAMESPACE

QMacDndAnswerRecord qt_mac_dnd_answer_rec; 

/*****************************************************************************
  QDnD debug facilities
 *****************************************************************************/
//#define DEBUG_DRAG_EVENTS
//#define DEBUG_DRAG_PROMISES

/*****************************************************************************
  QDnD globals
 *****************************************************************************/
bool qt_mac_in_drag = false;
#ifndef QT_MAC_USE_COCOA
static DragReference qt_mac_current_dragRef = 0;
#endif

/*****************************************************************************
  Externals
 *****************************************************************************/
extern void qt_mac_send_modifiers_changed(quint32, QObject *); //qapplication_mac.cpp
extern uint qGlobalPostedEventsCount(); //qapplication.cpp
extern RgnHandle qt_mac_get_rgn(); // qregion_mac.cpp
extern void qt_mac_dispose_rgn(RgnHandle); // qregion_mac.cpp
/*****************************************************************************
  QDnD utility functions
 *****************************************************************************/

//default pixmap
static const int default_pm_hotx = -2;
static const int default_pm_hoty = -16;
#ifndef QT_MAC_USE_COCOA
static const char * const default_pm[] = {
    "13 9 3 1",
    ".      c None",
    "       c #000000",
    "X      c #FFFFFF",
    "X X X X X X X",
    " X X X X X X ",
    "X ......... X",
    " X.........X ",
    "X ......... X",
    " X.........X ",
    "X ......... X",
    " X X X X X X ",
    "X X X X X X X",
};
#endif

//action management
#ifdef DEBUG_DRAG_EVENTS
# define MAP_MAC_ENUM(x) x, #x
#else
# define MAP_MAC_ENUM(x) x
#endif
struct mac_enum_mapper
{
    int mac_code;
    int qt_code;
#ifdef DEBUG_DRAG_EVENTS
    char *qt_desc;
#endif
};
#ifndef QT_MAC_USE_COCOA
static mac_enum_mapper dnd_action_symbols[] = {
    { kDragActionAlias, MAP_MAC_ENUM(Qt::LinkAction) },
    { kDragActionMove, MAP_MAC_ENUM(Qt::MoveAction) },
    { kDragActionGeneric, MAP_MAC_ENUM(Qt::CopyAction) },
    { kDragActionCopy, MAP_MAC_ENUM(Qt::CopyAction) },
    { 0, MAP_MAC_ENUM(0) }
};
static DragActions qt_mac_dnd_map_qt_actions(Qt::DropActions qActions)
{
    DragActions ret = kDragActionNothing;
    for(int i = 0; dnd_action_symbols[i].qt_code; ++i) {
        if(qActions & dnd_action_symbols[i].qt_code)
            ret |= dnd_action_symbols[i].mac_code;
    }
    return ret;
}
static Qt::DropActions qt_mac_dnd_map_mac_actions(DragActions macActions)
{
#ifdef DEBUG_DRAG_EVENTS
    qDebug("Converting DND ActionList: 0x%lx", macActions);
#endif
    Qt::DropActions ret = Qt::IgnoreAction;
    for(int i = 0; dnd_action_symbols[i].qt_code; ++i) {
#ifdef DEBUG_DRAG_EVENTS
        qDebug(" %d) [%s] : %s", i, dnd_action_symbols[i].qt_desc,