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Added parametric zoom on QChart....
Added parametric zoom on QChart. Signed-off-by: jeandet <alexis.jeandet@member.fsf.org>

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r2900:7532b52dd10c
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chartitem.cpp
70 lines | 2.2 KiB | text/x-c | CppLexer
/****************************************************************************
**
** 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 <private/chartitem_p.h>
#include <private/qabstractseries_p.h>
#include <private/abstractdomain_p.h>
#include <QtGui/QPainter>
QT_CHARTS_BEGIN_NAMESPACE
ChartItem::ChartItem(QAbstractSeriesPrivate *series,QGraphicsItem* item):
ChartElement(item),
m_validData(true),
m_series(series)
{
}
AbstractDomain* ChartItem::domain() const
{
return m_series->domain();
}
void ChartItem::handleDomainUpdated()
{
qWarning() << __FUNCTION__<< "Slot not implemented";
}
void ChartItem::reversePainter(QPainter *painter, const QRectF &clipRect)
{
if (m_series->reverseXAxis()) {
painter->translate(clipRect.width(), 0);
painter->scale(-1, 1);
}
if (m_series->reverseYAxis()) {
painter->translate(0, clipRect.height());
painter->scale(1, -1);
}
}
#include "moc_chartitem_p.cpp"
QT_CHARTS_END_NAMESPACE