selectionrectangle.cpp 2.92 KB
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
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**
** GNU Lesser General Public License Usage
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** 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, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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****************************************************************************/
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#include "selectionrectangle.h"

#include <QPen>
#include <QGraphicsScene>
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#include <QDebug>
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#include <cmath>

namespace QmlDesigner {

SelectionRectangle::SelectionRectangle(LayerItem *layerItem)
    : m_controlShape(new QGraphicsRectItem(layerItem)),
    m_layerItem(layerItem)
{
    m_controlShape->setPen(QPen(Qt::black));
    m_controlShape->setBrush(QColor(128, 128, 128, 50));
}

SelectionRectangle::~SelectionRectangle()
{
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    if (m_controlShape) {
        if (m_controlShape->scene())
            m_controlShape->scene()->removeItem(m_controlShape);
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        delete  m_controlShape;
    }
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}

void SelectionRectangle::clear()
{
    hide();
}
void SelectionRectangle::show()
{
    m_controlShape->show();
}

void SelectionRectangle::hide()
{
    m_controlShape->hide();
}

QRectF SelectionRectangle::rect() const
{
    return m_controlShape->mapFromScene(m_controlShape->rect()).boundingRect();
}

void SelectionRectangle::setRect(const QPointF &firstPoint,
                                 const QPointF &secondPoint)
{
    double firstX = std::floor(firstPoint.x()) + 0.5;
    double firstY = std::floor(firstPoint.y()) + 0.5;
    double secondX = std::floor(secondPoint.x()) + 0.5;
    double secondY = std::floor(secondPoint.y()) + 0.5;
    QPointF topLeftPoint(firstX < secondX ? firstX : secondX, firstY < secondY ? firstY : secondY);
    QPointF bottomRightPoint(firstX > secondX ? firstX : secondX, firstY > secondY ? firstY : secondY);

    QRectF rect(topLeftPoint, bottomRightPoint);
    m_controlShape->setRect(rect);
}

}