qt-everywhere-src-5.14.1/qtcharts/tests/manual/chartviewer/view.cpp

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "view.h"
#include <QtWidgets/QGraphicsWidget>
#include <QtGui/QResizeEvent>
#include <QtCore/QDebug>

View::View(QGraphicsScene *scene, QGraphicsWidget *form , QWidget *parent)
    : QGraphicsView(scene, parent),
      m_form(form)
{
    setDragMode(QGraphicsView::NoDrag);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
}

void View::resizeEvent(QResizeEvent *event)
{
    if (scene())
        scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));
    if (m_form)
        m_form->resize(QSizeF(event->size()));
    QGraphicsView::resizeEvent(event);
}

void View::mouseMoveEvent(QMouseEvent *event)
{
    //BugFix somehow view always eats the mouse move event;
    QGraphicsView::mouseMoveEvent(event);
    event->setAccepted(false);
}

void View::mouseReleaseEvent(QMouseEvent *event)
{
    QGraphicsView::mouseReleaseEvent(event);
    //BugFix somehow view always eats the mouse release event;
    event->setAccepted(false);
}