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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <private/chartpresenter_p.h>
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#include <QtCharts/QChart>
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#include <private/chartitem_p.h>
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#include <private/qchart_p.h>
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#include <QtCharts/QAbstractAxis>
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#include <private/qabstractaxis_p.h>
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#include <private/chartdataset_p.h>
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#include <private/chartanimation_p.h>
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#include <private/qabstractseries_p.h>
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#include <QtCharts/QAreaSeries>
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#include <private/chartaxiselement_p.h>
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#include <private/chartbackground_p.h>
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#include <private/cartesianchartlayout_p.h>
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#include <private/polarchartlayout_p.h>
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#include <private/charttitle_p.h>
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#include <QtCore/QTimer>
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#include <QtGui/QTextDocument>
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#include <QtWidgets/QGraphicsScene>
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#include <QtWidgets/QGraphicsView>
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QT_CHARTS_BEGIN_NAMESPACE
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ChartPresenter::ChartPresenter(QChart *chart, QChart::ChartType type)
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: QObject(chart),
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m_chart(chart),
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m_options(QChart::NoAnimation),
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m_animationDuration(ChartAnimationDuration),
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m_animationCurve(QEasingCurve::OutQuart),
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m_state(ShowState),
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m_background(0),
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m_plotAreaBackground(0),
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m_title(0),
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m_localizeNumbers(false)
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#ifndef QT_NO_OPENGL
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, m_glWidget(0)
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, m_glUseWidget(true)
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#endif
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{
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if (type == QChart::ChartTypeCartesian)
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m_layout = new CartesianChartLayout(this);
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else if (type == QChart::ChartTypePolar)
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m_layout = new PolarChartLayout(this);
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Q_ASSERT(m_layout);
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}
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ChartPresenter::~ChartPresenter()
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{
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#ifndef QT_NO_OPENGL
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delete m_glWidget.data();
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#endif
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}
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void ChartPresenter::setGeometry(const QRectF rect)
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{
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if (m_rect != rect) {
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m_rect = rect;
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foreach (ChartItem *chart, m_chartItems) {
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chart->domain()->setSize(rect.size());
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chart->setPos(rect.topLeft());
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}
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#ifndef QT_NO_OPENGL
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if (!m_glWidget.isNull())
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m_glWidget->setGeometry(m_rect.toRect());
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#endif
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emit plotAreaChanged(m_rect);
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}
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}
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QRectF ChartPresenter::geometry() const
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{
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return m_rect;
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}
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void ChartPresenter::handleAxisAdded(QAbstractAxis *axis)
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{
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axis->d_ptr->initializeGraphics(rootItem());
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axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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ChartAxisElement *item = axis->d_ptr->axisItem();
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item->setPresenter(this);
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item->setThemeManager(m_chart->d_ptr->m_themeManager);
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m_axisItems<<item;
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m_axes<<axis;
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m_layout->invalidate();
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}
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void ChartPresenter::handleAxisRemoved(QAbstractAxis *axis)
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{
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ChartAxisElement *item = axis->d_ptr->m_item.take();
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if (item->animation())
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item->animation()->stopAndDestroyLater();
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item->hide();
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item->disconnect();
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item->deleteLater();
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m_axisItems.removeAll(item);
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m_axes.removeAll(axis);
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m_layout->invalidate();
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}
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void ChartPresenter::handleSeriesAdded(QAbstractSeries *series)
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{
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series->d_ptr->initializeGraphics(rootItem());
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series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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series->d_ptr->setPresenter(this);
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ChartItem *chart = series->d_ptr->chartItem();
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chart->setPresenter(this);
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chart->setThemeManager(m_chart->d_ptr->m_themeManager);
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chart->setDataSet(m_chart->d_ptr->m_dataset);
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chart->domain()->setSize(m_rect.size());
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chart->setPos(m_rect.topLeft());
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chart->handleDomainUpdated(); //this could be moved to intializeGraphics when animator is refactored
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m_chartItems<<chart;
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m_series<<series;
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m_layout->invalidate();
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}
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void ChartPresenter::handleSeriesRemoved(QAbstractSeries *series)
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{
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ChartItem *chart = series->d_ptr->m_item.take();
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chart->hide();
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chart->disconnect();
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chart->deleteLater();
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if (chart->animation())
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chart->animation()->stopAndDestroyLater();
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m_chartItems.removeAll(chart);
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m_series.removeAll(series);
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m_layout->invalidate();
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}
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void ChartPresenter::setAnimationOptions(QChart::AnimationOptions options)
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{
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if (m_options != options) {
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QChart::AnimationOptions oldOptions = m_options;
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m_options = options;
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if (options.testFlag(QChart::SeriesAnimations) != oldOptions.testFlag(QChart::SeriesAnimations)) {
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foreach (QAbstractSeries *series, m_series)
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series->d_ptr->initializeAnimations(m_options, m_animationDuration,
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m_animationCurve);
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}
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if (options.testFlag(QChart::GridAxisAnimations) != oldOptions.testFlag(QChart::GridAxisAnimations)) {
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foreach (QAbstractAxis *axis, m_axes)
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axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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}
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m_layout->invalidate(); // So that existing animations don't just stop halfway
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}
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}
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void ChartPresenter::setAnimationDuration(int msecs)
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{
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if (m_animationDuration != msecs) {
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m_animationDuration = msecs;
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foreach (QAbstractSeries *series, m_series)
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series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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foreach (QAbstractAxis *axis, m_axes)
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axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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m_layout->invalidate(); // So that existing animations don't just stop halfway
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}
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}
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void ChartPresenter::setAnimationEasingCurve(const QEasingCurve &curve)
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{
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if (m_animationCurve != curve) {
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m_animationCurve = curve;
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foreach (QAbstractSeries *series, m_series)
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series->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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foreach (QAbstractAxis *axis, m_axes)
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axis->d_ptr->initializeAnimations(m_options, m_animationDuration, m_animationCurve);
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m_layout->invalidate(); // So that existing animations don't just stop halfway
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}
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}
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void ChartPresenter::setState(State state,QPointF point)
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{
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m_state=state;
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m_statePoint=point;
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}
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QChart::AnimationOptions ChartPresenter::animationOptions() const
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{
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return m_options;
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}
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void ChartPresenter::createBackgroundItem()
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{
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if (!m_background) {
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m_background = new ChartBackground(rootItem());
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m_background->setPen(Qt::NoPen); // Theme doesn't touch pen so don't use default
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m_background->setBrush(QChartPrivate::defaultBrush());
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m_background->setZValue(ChartPresenter::BackgroundZValue);
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}
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}
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void ChartPresenter::createPlotAreaBackgroundItem()
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{
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if (!m_plotAreaBackground) {
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if (m_chart->chartType() == QChart::ChartTypeCartesian)
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m_plotAreaBackground = new QGraphicsRectItem(rootItem());
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else
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m_plotAreaBackground = new QGraphicsEllipseItem(rootItem());
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// Use transparent pen instead of Qt::NoPen, as Qt::NoPen causes
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// antialising artifacts with axis lines for some reason.
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m_plotAreaBackground->setPen(QPen(Qt::transparent));
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m_plotAreaBackground->setBrush(Qt::NoBrush);
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m_plotAreaBackground->setZValue(ChartPresenter::PlotAreaZValue);
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m_plotAreaBackground->setVisible(false);
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}
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}
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void ChartPresenter::createTitleItem()
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{
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if (!m_title) {
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m_title = new ChartTitle(rootItem());
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m_title->setZValue(ChartPresenter::BackgroundZValue);
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}
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}
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void ChartPresenter::startAnimation(ChartAnimation *animation)
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{
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animation->stop();
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QTimer::singleShot(0, animation, SLOT(startChartAnimation()));
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}
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void ChartPresenter::setBackgroundBrush(const QBrush &brush)
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{
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createBackgroundItem();
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m_background->setBrush(brush);
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m_layout->invalidate();
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}
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QBrush ChartPresenter::backgroundBrush() const
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{
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if (!m_background)
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return QBrush();
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return m_background->brush();
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}
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void ChartPresenter::setBackgroundPen(const QPen &pen)
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{
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createBackgroundItem();
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m_background->setPen(pen);
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m_layout->invalidate();
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}
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QPen ChartPresenter::backgroundPen() const
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{
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if (!m_background)
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return QPen();
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return m_background->pen();
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}
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void ChartPresenter::setBackgroundRoundness(qreal diameter)
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{
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createBackgroundItem();
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m_background->setDiameter(diameter);
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m_layout->invalidate();
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}
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qreal ChartPresenter::backgroundRoundness() const
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{
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if (!m_background)
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return 0;
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return m_background->diameter();
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}
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void ChartPresenter::setPlotAreaBackgroundBrush(const QBrush &brush)
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{
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createPlotAreaBackgroundItem();
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m_plotAreaBackground->setBrush(brush);
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m_layout->invalidate();
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}
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QBrush ChartPresenter::plotAreaBackgroundBrush() const
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{
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if (!m_plotAreaBackground)
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return QBrush();
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return m_plotAreaBackground->brush();
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}
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void ChartPresenter::setPlotAreaBackgroundPen(const QPen &pen)
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{
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createPlotAreaBackgroundItem();
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m_plotAreaBackground->setPen(pen);
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m_layout->invalidate();
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}
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QPen ChartPresenter::plotAreaBackgroundPen() const
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{
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if (!m_plotAreaBackground)
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return QPen();
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return m_plotAreaBackground->pen();
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}
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void ChartPresenter::setTitle(const QString &title)
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{
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createTitleItem();
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m_title->setText(title);
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m_layout->invalidate();
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}
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QString ChartPresenter::title() const
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{
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if (!m_title)
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return QString();
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return m_title->text();
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}
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void ChartPresenter::setTitleFont(const QFont &font)
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{
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createTitleItem();
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m_title->setFont(font);
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m_layout->invalidate();
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}
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QFont ChartPresenter::titleFont() const
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{
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if (!m_title)
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return QFont();
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return m_title->font();
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}
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void ChartPresenter::setTitleBrush(const QBrush &brush)
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{
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createTitleItem();
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m_title->setDefaultTextColor(brush.color());
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m_layout->invalidate();
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}
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QBrush ChartPresenter::titleBrush() const
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{
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if (!m_title)
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return QBrush();
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return QBrush(m_title->defaultTextColor());
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}
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void ChartPresenter::setBackgroundVisible(bool visible)
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{
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createBackgroundItem();
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m_background->setVisible(visible);
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}
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bool ChartPresenter::isBackgroundVisible() const
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{
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if (!m_background)
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return false;
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return m_background->isVisible();
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}
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void ChartPresenter::setPlotAreaBackgroundVisible(bool visible)
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{
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createPlotAreaBackgroundItem();
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m_plotAreaBackground->setVisible(visible);
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}
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bool ChartPresenter::isPlotAreaBackgroundVisible() const
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{
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if (!m_plotAreaBackground)
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return false;
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return m_plotAreaBackground->isVisible();
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}
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void ChartPresenter::setBackgroundDropShadowEnabled(bool enabled)
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{
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createBackgroundItem();
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m_background->setDropShadowEnabled(enabled);
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}
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bool ChartPresenter::isBackgroundDropShadowEnabled() const
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{
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if (!m_background)
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return false;
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return m_background->isDropShadowEnabled();
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}
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void ChartPresenter::setLocalizeNumbers(bool localize)
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{
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m_localizeNumbers = localize;
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m_layout->invalidate();
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}
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void ChartPresenter::setLocale(const QLocale &locale)
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{
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m_locale = locale;
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m_layout->invalidate();
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}
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AbstractChartLayout *ChartPresenter::layout()
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{
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return m_layout;
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}
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QLegend *ChartPresenter::legend()
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{
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return m_chart->legend();
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}
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void ChartPresenter::setVisible(bool visible)
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{
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m_chart->setVisible(visible);
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}
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ChartBackground *ChartPresenter::backgroundElement()
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{
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return m_background;
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}
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QAbstractGraphicsShapeItem *ChartPresenter::plotAreaElement()
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{
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return m_plotAreaBackground;
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}
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QList<ChartAxisElement *> ChartPresenter::axisItems() const
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{
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return m_axisItems;
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}
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QList<ChartItem *> ChartPresenter::chartItems() const
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{
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return m_chartItems;
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}
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ChartTitle *ChartPresenter::titleElement()
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{
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return m_title;
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}
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QRectF ChartPresenter::textBoundingRect(const QFont &font, const QString &text, qreal angle)
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{
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static QGraphicsTextItem dummyTextItem;
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static bool initMargin = true;
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if (initMargin) {
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dummyTextItem.document()->setDocumentMargin(textMargin());
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|
initMargin = false;
|
|
|
}
|
|
|
|
|
|
dummyTextItem.setFont(font);
|
|
|
dummyTextItem.setHtml(text);
|
|
|
QRectF boundingRect = dummyTextItem.boundingRect();
|
|
|
|
|
|
// Take rotation into account
|
|
|
if (angle) {
|
|
|
QTransform transform;
|
|
|
transform.rotate(angle);
|
|
|
boundingRect = transform.mapRect(boundingRect);
|
|
|
}
|
|
|
|
|
|
return boundingRect;
|
|
|
}
|
|
|
|
|
|
// boundingRect parameter returns the rotated bounding rect of the text
|
|
|
QString ChartPresenter::truncatedText(const QFont &font, const QString &text, qreal angle,
|
|
|
qreal maxWidth, qreal maxHeight, QRectF &boundingRect)
|
|
|
{
|
|
|
QString truncatedString(text);
|
|
|
boundingRect = textBoundingRect(font, truncatedString, angle);
|
|
|
if (boundingRect.width() > maxWidth || boundingRect.height() > maxHeight) {
|
|
|
// It can be assumed that almost any amount of string manipulation is faster
|
|
|
// than calculating one bounding rectangle, so first prepare a list of truncated strings
|
|
|
// to try.
|
|
|
static QRegExp truncateMatcher(QStringLiteral("&#?[0-9a-zA-Z]*;$"));
|
|
|
|
|
|
QVector<QString> testStrings(text.length());
|
|
|
int count(0);
|
|
|
static QLatin1Char closeTag('>');
|
|
|
static QLatin1Char openTag('<');
|
|
|
static QLatin1Char semiColon(';');
|
|
|
static QLatin1String ellipsis("...");
|
|
|
while (truncatedString.length() > 1) {
|
|
|
int chopIndex(-1);
|
|
|
int chopCount(1);
|
|
|
QChar lastChar(truncatedString.at(truncatedString.length() - 1));
|
|
|
|
|
|
if (lastChar == closeTag)
|
|
|
chopIndex = truncatedString.lastIndexOf(openTag);
|
|
|
else if (lastChar == semiColon)
|
|
|
chopIndex = truncateMatcher.indexIn(truncatedString, 0);
|
|
|
|
|
|
if (chopIndex != -1)
|
|
|
chopCount = truncatedString.length() - chopIndex;
|
|
|
truncatedString.chop(chopCount);
|
|
|
testStrings[count] = truncatedString + ellipsis;
|
|
|
count++;
|
|
|
}
|
|
|
|
|
|
// Binary search for best fit
|
|
|
int minIndex(0);
|
|
|
int maxIndex(count - 1);
|
|
|
int bestIndex(count);
|
|
|
QRectF checkRect;
|
|
|
|
|
|
while (maxIndex >= minIndex) {
|
|
|
int mid = (maxIndex + minIndex) / 2;
|
|
|
checkRect = textBoundingRect(font, testStrings.at(mid), angle);
|
|
|
if (checkRect.width() > maxWidth || checkRect.height() > maxHeight) {
|
|
|
// Checked index too large, all under this are also too large
|
|
|
minIndex = mid + 1;
|
|
|
} else {
|
|
|
// Checked index fits, all over this also fit
|
|
|
maxIndex = mid - 1;
|
|
|
bestIndex = mid;
|
|
|
boundingRect = checkRect;
|
|
|
}
|
|
|
}
|
|
|
// Default to "..." if nothing fits
|
|
|
if (bestIndex == count) {
|
|
|
boundingRect = textBoundingRect(font, ellipsis, angle);
|
|
|
truncatedString = ellipsis;
|
|
|
} else {
|
|
|
truncatedString = testStrings.at(bestIndex);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return truncatedString;
|
|
|
}
|
|
|
|
|
|
QString ChartPresenter::numberToString(double value, char f, int prec)
|
|
|
{
|
|
|
if (m_localizeNumbers)
|
|
|
return m_locale.toString(value, f, prec);
|
|
|
else
|
|
|
return QString::number(value, f, prec);
|
|
|
}
|
|
|
|
|
|
QString ChartPresenter::numberToString(int value)
|
|
|
{
|
|
|
if (m_localizeNumbers)
|
|
|
return m_locale.toString(value);
|
|
|
else
|
|
|
return QString::number(value);
|
|
|
}
|
|
|
|
|
|
void ChartPresenter::ensureGLWidget()
|
|
|
{
|
|
|
#ifndef QT_NO_OPENGL
|
|
|
// GLWidget pointer is wrapped in QPointer as its parent is not in our control, and therefore
|
|
|
// can potentially get deleted unexpectedly.
|
|
|
if (m_glWidget.isNull() && m_glUseWidget && m_chart->scene()) {
|
|
|
// Find the view of the scene. If the scene has multiple views, only the first view is
|
|
|
// chosen.
|
|
|
QList<QGraphicsView *> views = m_chart->scene()->views();
|
|
|
if (views.size()) {
|
|
|
QGraphicsView *firstView = views.at(0);
|
|
|
m_glWidget = new GLWidget(m_chart->d_ptr->m_dataset->glXYSeriesDataManager(),
|
|
|
firstView);
|
|
|
m_glWidget->setGeometry(m_rect.toRect());
|
|
|
m_glWidget->show();
|
|
|
}
|
|
|
}
|
|
|
#endif
|
|
|
}
|
|
|
|
|
|
#include "moc_chartpresenter_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
