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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "subcomponentmasklayeritem.h"
#include "qmlobserverconstants.h"
#include "qdeclarativeviewobserver.h"
#include <QtGui/QPolygonF>
namespace QmlJSDebugger {
SubcomponentMaskLayerItem::SubcomponentMaskLayerItem(QDeclarativeViewObserver *observer,
QGraphicsItem *parentItem) :
QGraphicsPolygonItem(parentItem),
m_observer(observer),
m_currentItem(0),
m_borderRect(new QGraphicsRectItem(this))
{
m_borderRect->setRect(0,0,0,0);
m_borderRect->setPen(QPen(QColor(60, 60, 60), 1));
m_borderRect->setData(Constants::EditorItemDataKey, QVariant(true));
setBrush(QBrush(QColor(160,160,160)));
setPen(Qt::NoPen);
}
int SubcomponentMaskLayerItem::type() const
{
return Constants::EditorItemType;
}
static QRectF resizeRect(const QRectF &newRect, const QRectF &oldRect)
{
QRectF result = newRect;
if (oldRect.left() < newRect.left())
result.setLeft(oldRect.left());
if (oldRect.top() < newRect.top())
result.setTop(oldRect.top());
if (oldRect.right() > newRect.right())
result.setRight(oldRect.right());
if (oldRect.bottom() > newRect.bottom())
result.setBottom(oldRect.bottom());
return result;
}
void SubcomponentMaskLayerItem::setCurrentItem(QGraphicsItem *item)
{
QGraphicsItem *prevItem = m_currentItem;
m_currentItem = item;
if (!m_currentItem)
return;
QPolygonF viewPoly(QRectF(m_observer->declarativeView()->rect()));
viewPoly = m_observer->declarativeView()->mapToScene(viewPoly.toPolygon());
QRectF itemRect = item->boundingRect() | item->childrenBoundingRect();
QPolygonF itemPoly(itemRect);
itemPoly = item->mapToScene(itemPoly);
// if updating the same item as before, resize the rectangle only bigger, not smaller.
if (prevItem == item && prevItem != 0) {
m_itemPolyRect = resizeRect(itemPoly.boundingRect(), m_itemPolyRect);
} else {
m_itemPolyRect = itemPoly.boundingRect();
}
QRectF borderRect = m_itemPolyRect;
borderRect.adjust(-1, -1, 1, 1);
m_borderRect->setRect(borderRect);
itemPoly = viewPoly.subtracted(QPolygonF(m_itemPolyRect));
setPolygon(itemPoly);
}
QGraphicsItem *SubcomponentMaskLayerItem::currentItem() const
{
return m_currentItem;
}
} // namespace QmlJSDebugger
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