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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** 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 ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "formwindow_dnditem.h"
#include "formwindow.h"

#include <private/ui4_p.h>
#include <qdesigner_resource.h>
#include <qtresourcemodel_p.h>

#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/private/ui4_p.h>

#include <QtWidgets/QLabel>
#include <QtGui/QPixmap>

QT_BEGIN_NAMESPACE

using namespace qdesigner_internal;

static QWidget *decorationFromWidget(QWidget *w)
{
    QLabel *label = new QLabel(0, Qt::ToolTip);
    QPixmap pm = QPixmap::grabWidget(w);
    label->setPixmap(pm);
    label->resize(pm.size());

    return label;
}

static DomUI *widgetToDom(QWidget *widget, FormWindow *form)
{
    QDesignerResource builder(form);
    builder.setSaveRelative(false);
    return builder.copy(FormBuilderClipboard(widget));
}

FormWindowDnDItem::FormWindowDnDItem(QDesignerDnDItemInterface::DropType type, FormWindow *form,
                                        QWidget *widget, const QPoint &global_mouse_pos)
    : QDesignerDnDItem(type, form)
{
    QWidget *decoration = decorationFromWidget(widget);
    QPoint pos = widget->mapToGlobal(QPoint(0, 0));
    decoration->move(pos);

    init(0, widget, decoration, global_mouse_pos);
}

DomUI *FormWindowDnDItem::domUi() const
{
    DomUI *result = QDesignerDnDItem::domUi();
    if (result != 0)
        return result;
    FormWindow *form = qobject_cast<FormWindow*>(source());
    if (widget() == 0 || form == 0)
        return 0;

    QtResourceModel *resourceModel = form->core()->resourceModel();
    QtResourceSet *currentResourceSet = resourceModel->currentResourceSet();
    /* Short:
     *   We need to activate the original resourceSet associated with a form
     *   to properly generate the dom resource includes.
     * Long:
     *   widgetToDom() calls copy() on QDesignerResource. It generates the
     *   Dom structure. In order to create DomResources properly we need to
     *   have the associated ResourceSet active (QDesignerResource::saveResources()
     *   queries the resource model for a qrc path for the given resource file:
     *      qrcFile = m_core->resourceModel()->qrcPath(ri->text());
     *   This works only when the resource file comes from the active
     *   resourceSet */
    resourceModel->setCurrentResourceSet(form->resourceSet());

    result = widgetToDom(widget(), form);
    const_cast<FormWindowDnDItem*>(this)->setDomUi(result);
    resourceModel->setCurrentResourceSet(currentResourceSet);
    return result;
}

QT_END_NAMESPACE