/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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.
**
****************************************************************************/

#include "layeritem.h"

#include <formeditorscene.h>

#include <utils/qtcassert.h>

#include <QGraphicsView>

namespace QmlDesigner {

LayerItem::LayerItem(FormEditorScene* scene)
{
    scene->addItem(this);
    setZValue(1);
    setFlag(QGraphicsItem::ItemIsMovable, false);
    setAcceptedMouseButtons(Qt::NoButton);
}

LayerItem::~LayerItem() = default;

void LayerItem::paint(QPainter * /*painter*/, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/)
{
}

QRectF LayerItem::boundingRect() const
{
    return childrenBoundingRect();
}

QList<QGraphicsItem*> LayerItem::findAllChildItems() const
{
    return findAllChildItems(this);
}

QTransform LayerItem::viewportTransform() const
{
    QTC_ASSERT(scene(), return {});
    QTC_ASSERT(!scene()->views().isEmpty(), return {});

    return scene()->views().first()->viewportTransform();
}

QList<QGraphicsItem*> LayerItem::findAllChildItems(const QGraphicsItem *item) const
{
    QList<QGraphicsItem*> itemList(item->childItems());

    for (int end = itemList.length(), i = 0; i < end; ++i)
        itemList += findAllChildItems(itemList.at(i));

    return itemList;
}

}