HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r2543:979fe974d5e4

Clean up static variables a bit...

Miikka Heikkinen -

r2543:979fe974d5e4

parent child

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r2543:979fe974d5e4

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src/axis/chartaxiselement.cpp +1 -1

             /****************************************************************************
             **
             ** Copyright (C) 2013 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include "chartaxiselement_p.h"
             #include "qabstractaxis_p.h"
             #include "chartpresenter_p.h"
             #include "abstractchartlayout_p.h"
             #include <qmath.h>
             #include <QDateTime>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             static const char *labelFormatMatchString = "%[\\-\\+#\\s\\d\\.lhjztL]*([dicuoxfegXFEG])";
             static QRegExp *labelFormatMatcher = 0;
             class StaticLabelFormatMatcherDeleter
             {
             public:
                 StaticLabelFormatMatcherDeleter() {}
                 ~StaticLabelFormatMatcherDeleter() { delete labelFormatMatcher; }
             };
-            StaticLabelFormatMatcherDeleter staticLabelFormatMatcherDeleter;
+            static StaticLabelFormatMatcherDeleter staticLabelFormatMatcherDeleter;
             ChartAxisElement::ChartAxisElement(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis)
                 : ChartElement(item),
                   m_axis(axis),
                   m_animation(0),
                   m_grid(new QGraphicsItemGroup(item)),
                   m_arrow(new QGraphicsItemGroup(item)),
                   m_shades(new QGraphicsItemGroup(item)),
                   m_labels(new QGraphicsItemGroup(item)),
                   m_title(new QGraphicsTextItem(item)),
                   m_intervalAxis(intervalAxis)
             {
                 //initial initialization
                 m_arrow->setHandlesChildEvents(false);
                 m_arrow->setZValue(ChartPresenter::AxisZValue);
                 m_labels->setZValue(ChartPresenter::AxisZValue);
                 m_shades->setZValue(ChartPresenter::ShadesZValue);
                 m_grid->setZValue(ChartPresenter::GridZValue);
                 m_title->setZValue(ChartPresenter::GridZValue);
                 handleVisibleChanged(axis->isVisible());
                 connectSlots();
                 setFlag(QGraphicsItem::ItemHasNoContents, true);
             }
             ChartAxisElement::~ChartAxisElement()
             {
             }
             void ChartAxisElement::connectSlots()
             {
                 QObject::connect(axis(), SIGNAL(visibleChanged(bool)), this, SLOT(handleVisibleChanged(bool)));
                 QObject::connect(axis(), SIGNAL(lineVisibleChanged(bool)), this, SLOT(handleArrowVisibleChanged(bool)));
                 QObject::connect(axis(), SIGNAL(gridVisibleChanged(bool)), this, SLOT(handleGridVisibleChanged(bool)));
                 QObject::connect(axis(), SIGNAL(labelsVisibleChanged(bool)), this, SLOT(handleLabelsVisibleChanged(bool)));
                 QObject::connect(axis(), SIGNAL(shadesVisibleChanged(bool)), this, SLOT(handleShadesVisibleChanged(bool)));
                 QObject::connect(axis(), SIGNAL(labelsAngleChanged(int)), this, SLOT(handleLabelsAngleChanged(int)));
                 QObject::connect(axis(), SIGNAL(linePenChanged(const QPen&)), this, SLOT(handleArrowPenChanged(const QPen&)));
                 QObject::connect(axis(), SIGNAL(labelsPenChanged(const QPen&)), this, SLOT(handleLabelsPenChanged(const QPen&)));
                 QObject::connect(axis(), SIGNAL(labelsBrushChanged(const QBrush&)), this, SLOT(handleLabelsBrushChanged(const QBrush&)));
                 QObject::connect(axis(), SIGNAL(labelsFontChanged(const QFont&)), this, SLOT(handleLabelsFontChanged(const QFont&)));
                 QObject::connect(axis(), SIGNAL(gridLinePenChanged(const QPen&)), this, SLOT(handleGridPenChanged(const QPen&)));
                 QObject::connect(axis(), SIGNAL(shadesPenChanged(const QPen&)), this, SLOT(handleShadesPenChanged(const QPen&)));
                 QObject::connect(axis(), SIGNAL(shadesBrushChanged(const QBrush&)), this, SLOT(handleShadesBrushChanged(const QBrush&)));
                 QObject::connect(axis(), SIGNAL(titleTextChanged(const QString&)), this, SLOT(handleTitleTextChanged(const QString&)));
                 QObject::connect(axis(), SIGNAL(titleFontChanged(const QFont&)), this, SLOT(handleTitleFontChanged(const QFont&)));
                 QObject::connect(axis(), SIGNAL(titlePenChanged(const QPen&)), this, SLOT(handleTitlePenChanged(const QPen&)));
                 QObject::connect(axis(), SIGNAL(titleBrushChanged(const QBrush&)), this, SLOT(handleTitleBrushChanged(const QBrush&)));
                 QObject::connect(axis(), SIGNAL(titleVisibleChanged(bool)), this, SLOT(handleTitleVisibleChanged(bool)));
                 QObject::connect(axis()->d_ptr.data(), SIGNAL(rangeChanged(qreal, qreal)), this, SLOT(handleRangeChanged(qreal, qreal)));
             }
             void ChartAxisElement::handleArrowVisibleChanged(bool visible)
             {
                 m_arrow->setVisible(visible);
             }
             void ChartAxisElement::handleGridVisibleChanged(bool visible)
             {
                 m_grid->setVisible(visible);
             }
             void ChartAxisElement::handleLabelsVisibleChanged(bool visible)
             {
                 QGraphicsLayoutItem::updateGeometry();
                 presenter()->layout()->invalidate();
                 m_labels->setVisible(visible);
             }
             void ChartAxisElement::handleShadesVisibleChanged(bool visible)
             {
                 m_shades->setVisible(visible);
             }
             void ChartAxisElement::handleTitleVisibleChanged(bool visible)
             {
                 QGraphicsLayoutItem::updateGeometry();
                 presenter()->layout()->invalidate();
                 m_title->setVisible(visible);
             }
             void ChartAxisElement::handleLabelsAngleChanged(int angle)
             {
                 foreach (QGraphicsItem *item, m_labels->childItems())
                     item->setRotation(angle);
                 QGraphicsLayoutItem::updateGeometry();
                 presenter()->layout()->invalidate();
             }
             void ChartAxisElement::handleLabelsPenChanged(const QPen &pen)
             {
                 Q_UNUSED(pen)
             }
             void ChartAxisElement::handleLabelsBrushChanged(const QBrush &brush)
             {
                 foreach (QGraphicsItem *item, m_labels->childItems())
                     static_cast<QGraphicsTextItem *>(item)->setDefaultTextColor(brush.color());
             }
             void ChartAxisElement::handleLabelsFontChanged(const QFont &font)
             {
                 foreach (QGraphicsItem *item, m_labels->childItems())
                     static_cast<QGraphicsTextItem *>(item)->setFont(font);
                 QGraphicsLayoutItem::updateGeometry();
                 presenter()->layout()->invalidate();
             }
             void ChartAxisElement::handleTitleTextChanged(const QString &title)
             {
                 QGraphicsLayoutItem::updateGeometry();
                 presenter()->layout()->invalidate();
                 m_title->setHtml(title);
             }
             void ChartAxisElement::handleTitlePenChanged(const QPen &pen)
             {
                 Q_UNUSED(pen)
             }
             void ChartAxisElement::handleTitleBrushChanged(const QBrush &brush)
             {
                 m_title->setDefaultTextColor(brush.color());
             }
             void ChartAxisElement::handleTitleFontChanged(const QFont &font)
             {
                 if (m_title->font() != font) {
                     m_title->setFont(font);
                     QGraphicsLayoutItem::updateGeometry();
                     presenter()->layout()->invalidate();
                 }
             }
             void ChartAxisElement::handleVisibleChanged(bool visible)
             {
                 setVisible(visible);
                 if (!visible) {
                     m_grid->setVisible(visible);
                     m_arrow->setVisible(visible);
                     m_shades->setVisible(visible);
                     m_labels->setVisible(visible);
                     m_title->setVisible(visible);
                 } else {
                     m_grid->setVisible(axis()->isGridLineVisible());
                     m_arrow->setVisible(axis()->isLineVisible());
                     m_shades->setVisible(axis()->shadesVisible());
                     m_labels->setVisible(axis()->labelsVisible());
                     m_title->setVisible(axis()->isTitleVisible());
                 }
                 if (presenter()) presenter()->layout()->invalidate();
             }
             void ChartAxisElement::handleRangeChanged(qreal min, qreal max)
             {
                 Q_UNUSED(min);
                 Q_UNUSED(max);
                 if (!isEmpty()) {
                     QVector<qreal> layout = calculateLayout();
                     updateLayout(layout);
                     QSizeF before = effectiveSizeHint(Qt::PreferredSize);
                     QSizeF after = sizeHint(Qt::PreferredSize);
                     if (before != after) {
                         QGraphicsLayoutItem::updateGeometry();
                         // We don't want to call invalidate on layout, since it will change minimum size of
                         // component, which we would like to avoid since it causes nasty flips when scrolling
                         // or zooming, instead recalculate layout and use plotArea for extra space.
                         presenter()->layout()->setGeometry(presenter()->layout()->geometry());
                     }
                 }
             }
             bool ChartAxisElement::isEmpty()
             {
                 return axisGeometry().isEmpty()
                        || gridGeometry().isEmpty()
                        || qFuzzyCompare(min(), max());
             }
             qreal ChartAxisElement::min() const
             {
                 return m_axis->d_ptr->min();
             }
             qreal ChartAxisElement::max() const
             {
                 return m_axis->d_ptr->max();
             }
             static void appendFormattedLabel(const QString &capStr, const QByteArray &array,
                                              QStringList &labels, qreal value)
             {
                 if (capStr.isEmpty()) {
                     labels << QString();
                 } else if (capStr.at(0) == QLatin1Char('d')
                     || capStr.at(0) == QLatin1Char('i')
                     || capStr.at(0) == QLatin1Char('c')) {
                     labels << QString().sprintf(array, (qint64)value);
                 } else if (capStr.at(0) == QLatin1Char('u')
                          || capStr.at(0) == QLatin1Char('o')
                          || capStr.at(0) == QLatin1Char('x')
                          || capStr.at(0) == QLatin1Char('X')) {
                     labels << QString().sprintf(array, (quint64)value);
                 } else if (capStr.at(0) == QLatin1Char('f')
                            || capStr.at(0) == QLatin1Char('F')
                            || capStr.at(0) == QLatin1Char('e')
                            || capStr.at(0) == QLatin1Char('E')
                            || capStr.at(0) == QLatin1Char('g')
                            || capStr.at(0) == QLatin1Char('G')) {
                     labels << QString().sprintf(array, value);
                 } else {
                     labels << QString();
                 }
             }
             QStringList ChartAxisElement::createValueLabels(qreal min, qreal max, int ticks, const QString &format)
             {
                 QStringList labels;
                 if (max <= min || ticks < 1)
                     return labels;
                 int n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0);
                 n++;
                 if (format.isNull()) {
                     for (int i = 0; i < ticks; i++) {
                         qreal value = min + (i * (max - min) / (ticks - 1));
                         labels << QString::number(value, 'f', n);
                     }
                 } else {
                     QByteArray array = format.toLatin1();
                     QString capStr;
                     if (!labelFormatMatcher)
                         labelFormatMatcher = new QRegExp(labelFormatMatchString);
                     if (labelFormatMatcher->indexIn(format, 0) != -1)
                         capStr = labelFormatMatcher->cap(1);
                     for (int i = 0; i < ticks; i++) {
                         qreal value = min + (i * (max - min) / (ticks - 1));
                         appendFormattedLabel(capStr, array, labels, value);
                     }
                 }
                 return labels;
             }
             QStringList ChartAxisElement::createLogValueLabels(qreal min, qreal max, qreal base, int ticks, const QString &format)
             {
                 QStringList labels;
                 if (max <= min || ticks < 1)
                     return labels;
                 int n = 0;
                 if (ticks > 1)
                     n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0);
                 n++;
                 int firstTick;
                 if (base > 1)
                     firstTick = ceil(log10(min) / log10(base));
                 else
                     firstTick = ceil(log10(max) / log10(base));
                 if (format.isNull()) {
                     for (int i = firstTick; i < ticks + firstTick; i++) {
                         qreal value = qPow(base, i);
                         labels << QString::number(value, 'f', n);
                     }
                 } else {
                     QByteArray array = format.toLatin1();
                     QString capStr;
                     if (!labelFormatMatcher)
                         labelFormatMatcher = new QRegExp(labelFormatMatchString);
                     if (labelFormatMatcher->indexIn(format, 0) != -1)
                         capStr = labelFormatMatcher->cap(1);
                     for (int i = firstTick; i < ticks + firstTick; i++) {
                         qreal value = qPow(base, i);
                         appendFormattedLabel(capStr, array, labels, value);
                     }
                 }
                 return labels;
             }
             QStringList ChartAxisElement::createDateTimeLabels(qreal min, qreal max,int ticks,const QString &format)
             {
                 QStringList labels;
                 if (max <= min || ticks < 1)
                     return labels;
                 int n = qMax(int(-floor(log10((max - min) / (ticks - 1)))), 0);
                 n++;
                 for (int i = 0; i < ticks; i++) {
                     qreal value = min + (i * (max - min) / (ticks - 1));
                     labels << QDateTime::fromMSecsSinceEpoch(value).toString(format);
                 }
                 return labels;
             }
             void ChartAxisElement::axisSelected()
             {
                 emit clicked();
             }
             #include "moc_chartaxiselement_p.cpp"
             QTCOMMERCIALCHART_END_NAMESPACE

src/chartpresenter.cpp +8 -24

             /****************************************************************************
              **
              ** Copyright (C) 2013 Digia Plc
              ** All rights reserved.
              ** For any questions to Digia, please use contact form at http://qt.digia.com
              **
              ** This file is part of the Qt Commercial Charts Add-on.
              **
              ** $QT_BEGIN_LICENSE$
              ** Licensees holding valid Qt Commercial licenses may use this file in
              ** accordance with the Qt Commercial License Agreement provided with the
              ** Software or, alternatively, in accordance with the terms contained in
              ** a written agreement between you and Digia.
              **
              ** If you have questions regarding the use of this file, please use
              ** contact form at http://qt.digia.com
              ** $QT_END_LICENSE$
              **
              ****************************************************************************/
             #include "chartpresenter_p.h"
             #include "qchart.h"
             #include "chartitem_p.h"
             #include "qchart_p.h"
             #include "qabstractaxis.h"
             #include "qabstractaxis_p.h"
             #include "chartdataset_p.h"
             #include "chartanimation_p.h"
             #include "qabstractseries_p.h"
             #include "qareaseries.h"
             #include "chartaxiselement_p.h"
             #include "chartbackground_p.h"
             #include "cartesianchartlayout_p.h"
             #include "polarchartlayout_p.h"
             #include "charttitle_p.h"
             #include <QTimer>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
-            static QGraphicsTextItem *dummyTextItem = 0;
-            static const char *truncateMatchString = "&#?[0-9a-zA-Z]*;$";
-            static QRegExp *truncateMatcher = 0;
-            class StaticDummyTextDeleter
-            public:
-                StaticDummyTextDeleter() {}
-                ~StaticDummyTextDeleter()
-                    delete dummyTextItem;
-                    delete truncateMatcher;
-            };
-            StaticDummyTextDeleter staticDummyTextDeleter;
             ChartPresenter::ChartPresenter(QChart *chart, QChart::ChartType type)
                 : QObject(chart),
                   m_chart(chart),
                   m_options(QChart::NoAnimation),
                   m_state(ShowState),
                   m_background(0),
                   m_plotAreaBackground(0),
                   m_title(0)
             {
                 if (type == QChart::ChartTypeCartesian)
                     m_layout = new CartesianChartLayout(this);
                 else if (type == QChart::ChartTypePolar)
                     m_layout = new PolarChartLayout(this);
                 Q_ASSERT(m_layout);
             }
             ChartPresenter::~ChartPresenter()
             {
             }
             void ChartPresenter::setGeometry(const QRectF rect)
             {
                 if (m_rect != rect) {
                     m_rect = rect;
                     foreach (ChartItem *chart, m_chartItems) {
                         chart->domain()->setSize(rect.size());
                         chart->setPos(rect.topLeft());
                     }
                 }
             }
             QRectF ChartPresenter::geometry() const
             {
                 return m_rect;
             }
             void ChartPresenter::handleAxisAdded(QAbstractAxis *axis)
             {
                 axis->d_ptr->initializeGraphics(rootItem());
                 axis->d_ptr->initializeAnimations(m_options);
                 ChartAxisElement *item = axis->d_ptr->axisItem();
                 item->setPresenter(this);
                 item->setThemeManager(m_chart->d_ptr->m_themeManager);
                 m_axisItems<<item;
                 m_axes<<axis;
                 m_layout->invalidate();
             }
             void ChartPresenter::handleAxisRemoved(QAbstractAxis *axis)
             {
                 ChartAxisElement *item  = axis->d_ptr->m_item.take();
                 item->hide();
                 item->disconnect();
                 item->deleteLater();
                 m_axisItems.removeAll(item);
                 m_axes.removeAll(axis);
                 m_layout->invalidate();
             }
             void ChartPresenter::handleSeriesAdded(QAbstractSeries *series)
             {
                 series->d_ptr->initializeGraphics(rootItem());
                 series->d_ptr->initializeAnimations(m_options);
                 ChartItem *chart = series->d_ptr->chartItem();
                 chart->setPresenter(this);
                 chart->setThemeManager(m_chart->d_ptr->m_themeManager);
                 chart->domain()->setSize(m_rect.size());
                 chart->setPos(m_rect.topLeft());
                 chart->handleDomainUpdated(); //this could be moved to intializeGraphics when animator is refactored
                 m_chartItems<<chart;
                 m_series<<series;
                 m_layout->invalidate();
             }
             void ChartPresenter::handleSeriesRemoved(QAbstractSeries *series)
             {
                 ChartItem *chart  = series->d_ptr->m_item.take();
                 chart->hide();
                 chart->disconnect();
                 chart->deleteLater();
                 m_chartItems.removeAll(chart);
                 m_series.removeAll(series);
                 m_layout->invalidate();
             }
             void ChartPresenter::setAnimationOptions(QChart::AnimationOptions options)
             {
                 if (m_options != options) {
                     m_options = options;
                     foreach(QAbstractSeries* series, m_series){
                         series->d_ptr->initializeAnimations(m_options);
                     }
                     foreach(QAbstractAxis* axis, m_axes){
                         axis->d_ptr->initializeAnimations(m_options);
                     }
                 }
             }
             void ChartPresenter::setState(State state,QPointF point)
             {
             	m_state=state;
             	m_statePoint=point;
             }
             QChart::AnimationOptions ChartPresenter::animationOptions() const
             {
                 return m_options;
             }
             void ChartPresenter::createBackgroundItem()
             {
                 if (!m_background) {
                     m_background = new ChartBackground(rootItem());
                     m_background->setPen(Qt::NoPen); // Theme doesn't touch pen so don't use default
                     m_background->setBrush(QChartPrivate::defaultBrush());
                     m_background->setZValue(ChartPresenter::BackgroundZValue);
                 }
             }
             void ChartPresenter::createPlotAreaBackgroundItem()
             {
                 if (!m_plotAreaBackground) {
                     if (m_chart->chartType() == QChart::ChartTypeCartesian)
                         m_plotAreaBackground = new QGraphicsRectItem(rootItem());
                     else
                         m_plotAreaBackground = new QGraphicsEllipseItem(rootItem());
                     // Use transparent pen instead of Qt::NoPen, as Qt::NoPen causes
                     // antialising artifacts with axis lines for some reason.
                     m_plotAreaBackground->setPen(QPen(Qt::transparent));
                     m_plotAreaBackground->setBrush(Qt::NoBrush);
                     m_plotAreaBackground->setZValue(ChartPresenter::PlotAreaZValue);
                     m_plotAreaBackground->setVisible(false);
                 }
             }
             void ChartPresenter::createTitleItem()
             {
                 if (!m_title) {
                     m_title = new ChartTitle(rootItem());
                     m_title->setZValue(ChartPresenter::BackgroundZValue);
                 }
             }
             void ChartPresenter::handleAnimationFinished()
             {
                 m_animations.removeAll(qobject_cast<ChartAnimation *>(sender()));
                 if (m_animations.empty())
                     emit animationsFinished();
             }
             void ChartPresenter::startAnimation(ChartAnimation *animation)
             {
                 if (animation->state() != QAbstractAnimation::Stopped) animation->stop();
                 QObject::connect(animation, SIGNAL(finished()), this, SLOT(handleAnimationFinished()), Qt::UniqueConnection);
                 if (!m_animations.isEmpty())
                     m_animations.append(animation);
                 QTimer::singleShot(0, animation, SLOT(start()));
             }
             void ChartPresenter::setBackgroundBrush(const QBrush &brush)
             {
                 createBackgroundItem();
                 m_background->setBrush(brush);
                 m_layout->invalidate();
             }
             QBrush ChartPresenter::backgroundBrush() const
             {
                 if (!m_background)
                     return QBrush();
                 return m_background->brush();
             }
             void ChartPresenter::setBackgroundPen(const QPen &pen)
             {
                 createBackgroundItem();
                 m_background->setPen(pen);
                 m_layout->invalidate();
             }
             QPen ChartPresenter::backgroundPen() const
             {
                 if (!m_background)
                     return QPen();
                 return m_background->pen();
             }
             void ChartPresenter::setPlotAreaBackgroundBrush(const QBrush &brush)
             {
                 createPlotAreaBackgroundItem();
                 m_plotAreaBackground->setBrush(brush);
                 m_layout->invalidate();
             }
             QBrush ChartPresenter::plotAreaBackgroundBrush() const
             {
                 if (!m_plotAreaBackground)
                     return QBrush();
                 return m_plotAreaBackground->brush();
             }
             void ChartPresenter::setPlotAreaBackgroundPen(const QPen &pen)
             {
                 createPlotAreaBackgroundItem();
                 m_plotAreaBackground->setPen(pen);
                 m_layout->invalidate();
             }
             QPen ChartPresenter::plotAreaBackgroundPen() const
             {
                 if (!m_plotAreaBackground)
                     return QPen();
                 return m_plotAreaBackground->pen();
             }
             void ChartPresenter::setTitle(const QString &title)
             {
                 createTitleItem();
                 m_title->setText(title);
                 m_layout->invalidate();
             }
             QString ChartPresenter::title() const
             {
                 if (!m_title)
                     return QString();
                 return m_title->text();
             }
             void ChartPresenter::setTitleFont(const QFont &font)
             {
                 createTitleItem();
                 m_title->setFont(font);
                 m_layout->invalidate();
             }
             QFont ChartPresenter::titleFont() const
             {
                 if (!m_title)
                     return QFont();
                 return m_title->font();
             }
             void ChartPresenter::setTitleBrush(const QBrush &brush)
             {
                 createTitleItem();
                 m_title->setDefaultTextColor(brush.color());
                 m_layout->invalidate();
             }
             QBrush ChartPresenter::titleBrush() const
             {
                 if (!m_title)
                     return QBrush();
                 return QBrush(m_title->defaultTextColor());
             }
             void ChartPresenter::setBackgroundVisible(bool visible)
             {
                 createBackgroundItem();
                 m_background->setVisible(visible);
             }
             bool ChartPresenter::isBackgroundVisible() const
             {
                 if (!m_background)
                     return false;
                 return m_background->isVisible();
             }
             void ChartPresenter::setPlotAreaBackgroundVisible(bool visible)
             {
                 createPlotAreaBackgroundItem();
                 m_plotAreaBackground->setVisible(visible);
             }
             bool ChartPresenter::isPlotAreaBackgroundVisible() const
             {
                 if (!m_plotAreaBackground)
                     return false;
                 return m_plotAreaBackground->isVisible();
             }
             void ChartPresenter::setBackgroundDropShadowEnabled(bool enabled)
             {
                 createBackgroundItem();
                 m_background->setDropShadowEnabled(enabled);
             }
             bool ChartPresenter::isBackgroundDropShadowEnabled() const
             {
                 if (!m_background)
                     return false;
                 return m_background->isDropShadowEnabled();
             }
             AbstractChartLayout *ChartPresenter::layout()
             {
                 return m_layout;
             }
             QLegend *ChartPresenter::legend()
             {
                 return m_chart->legend();
             }
             void ChartPresenter::setVisible(bool visible)
             {
                 m_chart->setVisible(visible);
             }
             ChartBackground *ChartPresenter::backgroundElement()
             {
                 return m_background;
             }
             QAbstractGraphicsShapeItem *ChartPresenter::plotAreaElement()
             {
                 return m_plotAreaBackground;
             }
             QList<ChartAxisElement *>  ChartPresenter::axisItems() const
             {
                 return m_axisItems;
             }
             QList<ChartItem *> ChartPresenter::chartItems() const
             {
                 return m_chartItems;
             }
             ChartTitle *ChartPresenter::titleElement()
             {
                 return m_title;
             }
             QRectF ChartPresenter::textBoundingRect(const QFont &font, const QString &text, qreal angle)
             {
-                if (!dummyTextItem)
+                static QGraphicsTextItem dummyTextItem;
-                    dummyTextItem = new QGraphicsTextItem;
-                dummyTextItem->setFont(font);
+                dummyTextItem.setFont(font);
-                dummyTextItem->setHtml(text);
+                dummyTextItem.setHtml(text);
-                QRectF boundingRect = dummyTextItem->boundingRect();
+                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 maxSize, Qt::Orientation constraintOrientation,
                                                   QRectF &boundingRect)
             {
                 QString truncatedString(text);
                 boundingRect = textBoundingRect(font, truncatedString, angle);
                 qreal checkDimension = ((constraintOrientation == Qt::Horizontal)
                                        ? boundingRect.width() : boundingRect.height());
                 if (checkDimension > maxSize) {
                     // 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.
-                    if (!truncateMatcher)
+                    static const char *truncateMatchString = "&#?[0-9a-zA-Z]*;$";
-                        truncateMatcher = new QRegExp(truncateMatchString);
+                    static QRegExp truncateMatcher(truncateMatchString);
                     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);
+                            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);
                         checkDimension = ((constraintOrientation == Qt::Horizontal)
                                          ? checkRect.width() : checkRect.height());
                         if (checkDimension > maxSize) {
                             // 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;
             }
             #include "moc_chartpresenter_p.cpp"
             QTCOMMERCIALCHART_END_NAMESPACE

src/qchart.cpp +10 -13

             /****************************************************************************
             **
             ** Copyright (C) 2013 Digia Plc
             ** All rights reserved.
             ** For any questions to Digia, please use contact form at http://qt.digia.com
             **
             ** This file is part of the Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial License Agreement provided with the
             ** Software or, alternatively, in accordance with the terms contained in
             ** a written agreement between you and Digia.
             **
             ** If you have questions regarding the use of this file, please use
             ** contact form at http://qt.digia.com
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include "qchart.h"
             #include "qchart_p.h"
             #include "legendscroller_p.h"
             #include "qlegend_p.h"
             #include "chartbackground_p.h"
             #include "qabstractaxis.h"
             #include "abstractchartlayout_p.h"
             #include "charttheme_p.h"
             #include "chartpresenter_p.h"
             #include "chartdataset_p.h"
             #include <QGraphicsScene>
             #include <QGraphicsSceneResizeEvent>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             /*!
              \enum QChart::ChartTheme
              This enum describes the theme used by the chart.
              \value ChartThemeLight The default theme
              \value ChartThemeBlueCerulean
              \value ChartThemeDark
              \value ChartThemeBrownSand
              \value ChartThemeBlueNcs
              \value ChartThemeHighContrast
              \value ChartThemeBlueIcy
              */
             /*!
              \enum QChart::AnimationOption
              For enabling/disabling animations. Defaults to NoAnimation.
              \value NoAnimation
              \value GridAxisAnimations
              \value SeriesAnimations
              \value AllAnimations
              */
             /*!
              \enum QChart::ChartType
              This enum describes the chart type.
              \value ChartTypeUndefined
              \value ChartTypeCartesian
              \value ChartTypePolar
              */
             /*!
              \class QChart
              \brief QtCommercial chart API.
              QChart is a QGraphicsWidget that you can show in a QGraphicsScene. It manages the graphical
              representation of different types of series and other chart related objects like legend and
              axes. If you simply want to show a chart in a layout, you can use the
              convenience class QChartView instead of QChart.
              \sa QChartView, QPolarChart
              */
             /*!
              \property QChart::animationOptions
              The animation \a options for the chart. Animations are enabled/disabled based on this setting.
              */
             /*!
              \property QChart::backgroundVisible
              Specifies whether the chart background is visible or not.
              \sa setBackgroundBrush(), setBackgroundPen(), plotAreaBackgroundVisible
              */
             /*!
              \property QChart::dropShadowEnabled
              If set to true, the background drop shadow effect is enabled. If set to false, it is disabled. Note that the drop
              shadow effect depends on theme, which means the setting may be changed if you switch to another theme.
              */
             /*!
              \property QChart::minimumMargins
              Minimum margins between the plot area (axes) and the edge of the chart widget.
              This property is deprecated; use margins property instead.
              \sa margins
              */
             /*!
              \property QChart::margins
              Margins between the plot area (axes) and the edge of the chart widget.
              */
             /*!
              \property QChart::theme
              Theme is a built-in collection of UI style related settings applied for all visual elements of a chart, like colors,
              pens, brushes, and fonts of series, axes, title, and legend. \l {Chart themes demo} shows an example with a few
              different themes.
              \note Changing the theme will overwrite all customizations previously applied to the series.
              */
             /*!
              \property QChart::title
              Title is the name (label) of a chart. It is shown as a headline on top of the chart. Chart title supports html formatting.
              */
             /*!
              \property QChart::chartType
              Chart type indicates if the chart is a cartesian chart or a polar chart.
              This property is set internally and it is read only.
              \sa QPolarChart
              */
             /*!
              \property QChart::plotAreaBackgroundVisible
              Specifies whether the chart plot area background is visible or not.
              \note By default the plot area background is not visible and the plot area uses
              the general chart background.
              \sa setPlotAreaBackgroundBrush(), setPlotAreaBackgroundPen(), backgroundVisible
              */
             /*!
              \internal
              Constructs a chart object of \a type which is a child of a \a parent.
              Parameter \a wFlags is passed to the QGraphicsWidget constructor.
              This constructor is called only by subclasses.
             */
             QChart::QChart(QChart::ChartType type, QGraphicsItem *parent, Qt::WindowFlags wFlags)
                 : QGraphicsWidget(parent, wFlags),
                   d_ptr(new QChartPrivate(this, type))
             {
                 d_ptr->init();
             }
             /*!
              Constructs a chart object which is a child of a \a parent.
              Parameter \a wFlags is passed to the QGraphicsWidget constructor.
              */
             QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
                 : QGraphicsWidget(parent, wFlags),
                   d_ptr(new QChartPrivate(this, ChartTypeCartesian))
             {
                 d_ptr->init();
             }
             /*!
              Destroys the chart object and its children, like series and axis objects added to it.
              */
             QChart::~QChart()
             {
                 //start by deleting dataset, it will remove all series and axes
                 delete d_ptr->m_dataset;
                 d_ptr->m_dataset = 0;
             }
             /*!
              Adds the \a series onto the chart and takes the ownership of it.
              \note A newly added series is attached to no axes by default, including any axes that were created for the chart
              using createDefaultAxes() before the series was added to the chart. If no axes are attached to
              the newly added series before the chart is shown, the series will get drawn as if it had axes with ranges
              that exactly fit the series to the plot area of the chart. This can be confusing if the same chart also displays other
              series that have properly attached axes, so always make sure you either call createDefaultAxes() after
              a series has been added or explicitly attach axes for the series.
              \sa removeSeries(), removeAllSeries(), createDefaultAxes(), QAbstractSeries::attachAxis()
              */
             void QChart::addSeries(QAbstractSeries *series)
             {
                 Q_ASSERT(series);
                 d_ptr->m_dataset->addSeries(series);
             }
             /*!
              Removes the \a series from the chart.
              The chart releases its ownership of the specified \a series object.
              \sa addSeries(), removeAllSeries()
              */
             void QChart::removeSeries(QAbstractSeries *series)
             {
                 Q_ASSERT(series);
                 d_ptr->m_dataset->removeSeries(series);
             }
             /*!
              Removes and deletes all series objects that have been added to the chart.
              \sa addSeries(), removeSeries()
              */
             void QChart::removeAllSeries()
             {
                 foreach (QAbstractSeries *s ,  d_ptr->m_dataset->series()){
                     removeSeries(s);
                     delete s;
                 }
             }
             /*!
              Sets the \a brush that is used for painting the background of the chart area.
              */
             void QChart::setBackgroundBrush(const QBrush &brush)
             {
                 d_ptr->m_presenter->setBackgroundBrush(brush);
             }
             /*!
              Gets the brush that is used for painting the background of the chart area.
              */
             QBrush QChart::backgroundBrush() const
             {
                 return d_ptr->m_presenter->backgroundBrush();
             }
             /*!
              Sets the \a pen that is used for painting the background of the chart area.
              */
             void QChart::setBackgroundPen(const QPen &pen)
             {
                 d_ptr->m_presenter->setBackgroundPen(pen);
             }
             /*!
              Gets the pen that is used for painting the background of the chart area.
              */
             QPen QChart::backgroundPen() const
             {
                 return d_ptr->m_presenter->backgroundPen();
             }
             void QChart::setTitle(const QString &title)
             {
                 d_ptr->m_presenter->setTitle(title);
             }
             QString QChart::title() const
             {
                 return d_ptr->m_presenter->title();
             }
             /*!
              Sets the \a font that is used for drawing the chart title.
              */
             void QChart::setTitleFont(const QFont &font)
             {
                 d_ptr->m_presenter->setTitleFont(font);
             }
             /*!
              Gets the font that is used for drawing the chart title.
              */
             QFont QChart::titleFont() const
             {
                 return d_ptr->m_presenter->titleFont();
             }
             /*!
              Sets the \a brush used for drawing the title text.
              */
             void QChart::setTitleBrush(const QBrush &brush)
             {
                 d_ptr->m_presenter->setTitleBrush(brush);
             }
             /*!
              Returns the brush used for drawing the title text.
              */
             QBrush QChart::titleBrush() const
             {
                 return d_ptr->m_presenter->titleBrush();
             }
             void QChart::setTheme(QChart::ChartTheme theme)
             {
                 d_ptr->m_themeManager->setTheme(theme);
             }
             QChart::ChartTheme QChart::theme() const
             {
                 return d_ptr->m_themeManager->theme()->id();
             }
             /*!
              Zooms in the view by a factor of two.
              */
             void QChart::zoomIn()
             {
                 d_ptr->zoomIn(2.0);
             }
             /*!
              Zooms in the view to a maximum level at which \a rect is still fully visible.
              \note This is not supported for polar charts.
              */
             void QChart::zoomIn(const QRectF &rect)
             {
                 if (d_ptr->m_type == QChart::ChartTypePolar)
                     return;
                 d_ptr->zoomIn(rect);
             }
             /*!
              Zooms out the view by a factor of two.
              */
             void QChart::zoomOut()
             {
                 d_ptr->zoomOut(2.0);
             }
             /*!
              Zooms in the view by a custom \a factor.
              A factor over 1.0 zooms the view in and factor between 0.0 and 1.0 zooms out.
              */
             void QChart::zoom(qreal factor)
             {
                 if (qFuzzyCompare(factor, 0))
                     return;
                 if (qFuzzyCompare(factor, (qreal)1.0))
                     return;
                 if (factor < 0)
                     return;
                 if (factor > 1.0)
                     d_ptr->zoomIn(factor);
                 else
                     d_ptr->zoomOut(1.0 / factor);
             }
             /*!
              Returns a pointer to the horizontal axis attached to the specified \a series.
              If no \a series is specified, the first horizontal axis added to the chart is returned.
              \sa addAxis(), QAbstractSeries::attachAxis()
              */
             QAbstractAxis *QChart::axisX(QAbstractSeries *series) const
             {
                 QList<QAbstractAxis *> axisList = axes(Qt::Horizontal, series);
                 if (axisList.count())
                     return axisList[0];
                 return 0;
             }
             /*!
              Returns a pointer to the vertical axis attached to the specified \a series.
              If no \a series is specified, the first vertical axis added to the chart is returned.
              \sa addAxis(), QAbstractSeries::attachAxis()
              */
             QAbstractAxis *QChart::axisY(QAbstractSeries *series) const
             {
                 QList<QAbstractAxis *> axisList = axes(Qt::Vertical, series);
                 if (axisList.count())
                     return axisList[0];
                 return 0;
             }
             /*!
              Returns the axes attached to the \a series with \a orientation. If no \a series is provided,
              then all axes added to the chart with the specified orientation are returned.
              \sa addAxis(), createDefaultAxes()
              */
             QList<QAbstractAxis *> QChart::axes(Qt::Orientations orientation, QAbstractSeries *series) const
             {
                 QList<QAbstractAxis *> result ;
                 if (series) {
                     foreach (QAbstractAxis *axis, series->attachedAxes()){
                         if (orientation.testFlag(axis->orientation()))
                             result << axis;
                     }
                 } else {
                     foreach (QAbstractAxis *axis, d_ptr->m_dataset->axes()){
                         if (orientation.testFlag(axis->orientation()) && !result.contains(axis))
                             result << axis;
                     }
                 }
                 return result;
             }
             /*!
              Creates axes for the chart based on the series that have already been added to the chart. Any axes previously added to
              the chart will be deleted.
              \note This function has to be called after all series have been added to the chart. The axes created by this function
              will NOT get automatically attached to any series added to the chart after this function has been called.
              A series with no axes attached will by default scale to utilize the entire plot area of the chart, which can be confusing
              if there are other series with properly attached axes also present.
              \table
                  \header
                      \o Series type
                      \o X-axis
                      \o Y-axis
                  \row
                      \o QXYSeries
                      \o QValueAxis
                      \o QValueAxis
                  \row
                      \o QBarSeries
                      \o QBarCategoryAxis
                      \o QValueAxis
                  \row
                      \o QPieSeries
                      \o None
                      \o None
              \endtable
              If there are several QXYSeries derived series added to the chart and no series of other types have been added, then only one pair of axes is created.
              If there are several series of different types added to the chart, then each series gets its own axes pair.
              The axes specific to the series can be later obtained from the chart by providing the series as the parameter for axes() function call.
              QPieSeries does not create any axes.
              \sa axisX(), axisY(), axes(), setAxisX(), setAxisY(), QAbstractSeries::attachAxis()
              */
             void QChart::createDefaultAxes()
             {
                 d_ptr->m_dataset->createDefaultAxes();
             }
             /*!
              Returns the legend object of the chart. Ownership stays with the chart.
              */
             QLegend *QChart::legend() const
             {
                 return d_ptr->m_legend;
             }
             void QChart::setMinimumMargins(const QMargins &margins)
             {
                 qWarning() << "QChart::setMinimumMargins is deprecated. Use QChart::setMargins instead.";
                 d_ptr->m_presenter->layout()->setMargins(margins);
             }
             QMargins QChart::minimumMargins() const
             {
                 qWarning() << "QChart::minimumMargins is deprecated. Use QChart::margins instead.";
                 return d_ptr->m_presenter->layout()->margins();
             }
             void QChart::setMargins(const QMargins &margins)
             {
                 d_ptr->m_presenter->layout()->setMargins(margins);
             }
             QMargins QChart::margins() const
             {
                 return d_ptr->m_presenter->layout()->margins();
             }
             QChart::ChartType QChart::chartType() const
             {
                 return d_ptr->m_type;
             }
             /*!
                 Returns the the rectangle within which the drawing of the chart is done.
                 It does not include the area defined by margins.
              */
             QRectF QChart::plotArea() const
             {
                 return d_ptr->m_presenter->geometry();
             }
             /*!
                 Sets the \a brush for the background of the plot area of the chart.
                 \sa plotArea(), plotAreaBackgroundVisible, setPlotAreaBackgroundPen(), plotAreaBackgroundBrush()
              */
             void QChart::setPlotAreaBackgroundBrush(const QBrush &brush)
             {
                 d_ptr->m_presenter->setPlotAreaBackgroundBrush(brush);
             }
             /*!
                 Returns the brush for the background of the plot area of the chart.
                 \sa plotArea(), plotAreaBackgroundVisible, plotAreaBackgroundPen(), setPlotAreaBackgroundBrush()
              */
             QBrush QChart::plotAreaBackgroundBrush() const
             {
                 return d_ptr->m_presenter->plotAreaBackgroundBrush();
             }
             /*!
                 Sets the \a pen for the background of the plot area of the chart.
                 \sa plotArea(), plotAreaBackgroundVisible, setPlotAreaBackgroundBrush(), plotAreaBackgroundPen()
              */
             void QChart::setPlotAreaBackgroundPen(const QPen &pen)
             {
                 d_ptr->m_presenter->setPlotAreaBackgroundPen(pen);
             }
             /*!
                 Returns the pen for the background of the plot area of the chart.
                 \sa plotArea(), plotAreaBackgroundVisible, plotAreaBackgroundBrush(), setPlotAreaBackgroundPen()
              */
             QPen QChart::plotAreaBackgroundPen() const
             {
                 return d_ptr->m_presenter->plotAreaBackgroundPen();
             }
             void QChart::setPlotAreaBackgroundVisible(bool visible)
             {
                 d_ptr->m_presenter->setPlotAreaBackgroundVisible(visible);
             }
             bool QChart::isPlotAreaBackgroundVisible() const
             {
                 return d_ptr->m_presenter->isPlotAreaBackgroundVisible();
             }
             void QChart::setAnimationOptions(AnimationOptions options)
             {
                 d_ptr->m_presenter->setAnimationOptions(options);
             }
             QChart::AnimationOptions QChart::animationOptions() const
             {
                 return d_ptr->m_presenter->animationOptions();
             }
             /*!
                 Scrolls the visible area of the chart by the distance defined in the \a dx and \a dy.
                 For polar charts, \a dx indicates the angle along angular axis instead of distance.
              */
             void QChart::scroll(qreal dx, qreal dy)
             {
                 d_ptr->scroll(dx,dy);
             }
             void QChart::setBackgroundVisible(bool visible)
             {
                 d_ptr->m_presenter->setBackgroundVisible(visible);
             }
             bool QChart::isBackgroundVisible() const
             {
                 return d_ptr->m_presenter->isBackgroundVisible();
             }
             void QChart::setDropShadowEnabled(bool enabled)
             {
                 d_ptr->m_presenter->setBackgroundDropShadowEnabled(enabled);
             }
             bool QChart::isDropShadowEnabled() const
             {
                 return d_ptr->m_presenter->isBackgroundDropShadowEnabled();
             }
             /*!
               Returns all series that are added to the chart.
               \sa addSeries(), removeSeries(), removeAllSeries()
             */
             QList<QAbstractSeries *> QChart::series() const
             {
                 return d_ptr->m_dataset->series();
             }
             /*!
               Adds the \a axis to the chart and attaches it to the \a series as a bottom-aligned horizontal axis.
               The chart takes ownership of both the \a axis and the \a series.
               Any horizontal axes previously attached to the \a series are deleted.
               \sa axisX(), axisY(), setAxisY(), createDefaultAxes(), QAbstractSeries::attachAxis()
             */
             void QChart::setAxisX(QAbstractAxis *axis ,QAbstractSeries *series)
             {
                 QList<QAbstractAxis*> list = axes(Qt::Horizontal, series);
                 foreach (QAbstractAxis* a, list) {
                     d_ptr->m_dataset->removeAxis(a);
                     delete a;
                 }
                 if (!d_ptr->m_dataset->axes().contains(axis))
                     d_ptr->m_dataset->addAxis(axis, Qt::AlignBottom);
                 d_ptr->m_dataset->attachAxis(series, axis);
             }
             /*!
               Adds the \a axis to the chart and attaches it to the \a series as a left-aligned vertical axis.
               The chart takes ownership of both the \a axis and the \a series.
               Any vertical axes previously attached to the \a series are deleted.
               \sa axisX(), axisY(), setAxisX(), createDefaultAxes(), QAbstractSeries::attachAxis()
             */
             void QChart::setAxisY(QAbstractAxis *axis ,QAbstractSeries *series)
             {
                 QList<QAbstractAxis*> list = axes(Qt::Vertical, series);
                 foreach (QAbstractAxis* a, list) {
                     d_ptr->m_dataset->removeAxis(a);
                     delete a;
                 }
                 if (!d_ptr->m_dataset->axes().contains(axis))
                     d_ptr->m_dataset->addAxis(axis, Qt::AlignLeft);
                 d_ptr->m_dataset->attachAxis(series, axis);
             }
             /*!
               Adds the \a axis to the chart with \a alignment. The chart takes the ownership of the axis.
               \sa removeAxis(), createDefaultAxes(), QAbstractSeries::attachAxis()
             */
             void QChart::addAxis(QAbstractAxis *axis, Qt::Alignment alignment)
             {
                 d_ptr->m_dataset->addAxis(axis, alignment);
             }
             /*!
               Removes the \a axis from the chart.
               The chart releases its ownership of the specified \a axis object.
               \sa addAxis(), createDefaultAxes(), QAbstractSeries::detachAxis()
             */
             void QChart::removeAxis(QAbstractAxis *axis)
             {
                 d_ptr->m_dataset->removeAxis(axis);
             }
             /*!
               Returns the value in the \a series domain that corresponds to the \a position relative to chart widget.
             */
             QPointF QChart::mapToValue(const QPointF &position, QAbstractSeries *series)
             {
                 return d_ptr->m_dataset->mapToValue(position, series);
             }
             /*!
               Returns the position on the chart widget that corresponds to the \a value in the \a series domain.
             */
             QPointF QChart::mapToPosition(const QPointF &value, QAbstractSeries *series)
             {
                 return d_ptr->m_dataset->mapToPosition(value, series);
             }
             //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
             QChartPrivate::QChartPrivate(QChart *q, QChart::ChartType type):
                 q_ptr(q),
                 m_legend(0),
                 m_dataset(new ChartDataSet(q)),
                 m_presenter(new ChartPresenter(q, type)),
                 m_themeManager(new ChartThemeManager(q)),
                 m_type(type)
             {
                 QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_presenter, SLOT(handleSeriesAdded(QAbstractSeries*)));
                 QObject::connect(m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), m_presenter, SLOT(handleSeriesRemoved(QAbstractSeries*)));
                 QObject::connect(m_dataset, SIGNAL(axisAdded(QAbstractAxis*)), m_presenter, SLOT(handleAxisAdded(QAbstractAxis*)));
                 QObject::connect(m_dataset, SIGNAL(axisRemoved(QAbstractAxis*)), m_presenter, SLOT(handleAxisRemoved(QAbstractAxis*)));
                 QObject::connect(m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesAdded(QAbstractSeries*)));
                 QObject::connect(m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), m_themeManager, SLOT(handleSeriesRemoved(QAbstractSeries*)));
                 QObject::connect(m_dataset, SIGNAL(axisAdded(QAbstractAxis*)), m_themeManager, SLOT(handleAxisAdded(QAbstractAxis*)));
                 QObject::connect(m_dataset, SIGNAL(axisRemoved(QAbstractAxis*)), m_themeManager, SLOT(handleAxisRemoved(QAbstractAxis*)));
             }
             QChartPrivate::~QChartPrivate()
             {
             }
             // Hackish solution to the problem of explicitly assigning the default pen/brush/font
             // to a series or axis and having theme override it:
             // Initialize pens, brushes, and fonts to something nobody is likely to ever use,
             // so that default theme initialization will always set these properly.
             QPen &QChartPrivate::defaultPen()
             {
-                static QPen *defaultPen = 0;
+                static QPen defaultPen(QColor(1, 2, 0), 0.93247536);
-                if (!defaultPen)
+                return defaultPen;
-                    defaultPen = new QPen(QColor(1, 2, 0), 0.93247536);
-                return *defaultPen;
             }
             QBrush &QChartPrivate::defaultBrush()
             {
-                static QBrush *defaultBrush = 0;
+                static QBrush defaultBrush(QColor(1, 2, 0), Qt::Dense7Pattern);
-                if (!defaultBrush)
+                return defaultBrush;
-                    defaultBrush = new QBrush(QColor(1, 2, 0), Qt::Dense7Pattern);
-                return *defaultBrush;
             }
             QFont &QChartPrivate::defaultFont()
             {
-                static QFont *defaultFont = 0;
+                static bool defaultFontInitialized(false);
-                if (!defaultFont) {
+                static QFont defaultFont;
-                    defaultFont = new QFont();
+                if (!defaultFontInitialized) {
-                    defaultFont->setPointSizeF(8.34563465);
+                    defaultFont.setPointSizeF(8.34563465);
+                    defaultFontInitialized = true;
                 }
-                return *defaultFont;
+                return defaultFont;
             }
             void QChartPrivate::init()
             {
                 m_legend = new LegendScroller(q_ptr);
                 q_ptr->setTheme(QChart::ChartThemeLight);
                 q_ptr->setLayout(m_presenter->layout());
             }
             void QChartPrivate::zoomIn(qreal factor)
             {
                 QRectF rect = m_presenter->geometry();
                 rect.setWidth(rect.width() / factor);
                 rect.setHeight(rect.height() / factor);
                 rect.moveCenter(m_presenter->geometry().center());
                 zoomIn(rect);
             }
             void QChartPrivate::zoomIn(const QRectF &rect)
             {
                 if (!rect.isValid())
                     return;
                 QRectF r = rect.normalized();
                 const QRectF geometry = m_presenter->geometry();
                 r.translate(-geometry.topLeft());
                 if (!r.isValid())
                     return;
                 QPointF zoomPoint(r.center().x() / geometry.width(), r.center().y() / geometry.height());
                 m_presenter->setState(ChartPresenter::ZoomInState,zoomPoint);
                 m_dataset->zoomInDomain(r);
                 m_presenter->setState(ChartPresenter::ShowState,QPointF());
             }
             void QChartPrivate::zoomOut(qreal factor)
             {
                 const QRectF geometry = m_presenter->geometry();
                 QRectF r;
                 r.setSize(geometry.size() / factor);
                 r.moveCenter(QPointF(geometry.size().width()/2 ,geometry.size().height()/2));
                 if (!r.isValid())
                     return;
                 QPointF zoomPoint(r.center().x() / geometry.width(), r.center().y() / geometry.height());
                 m_presenter->setState(ChartPresenter::ZoomOutState,zoomPoint);
                 m_dataset->zoomOutDomain(r);
                 m_presenter->setState(ChartPresenter::ShowState,QPointF());
             }
             void QChartPrivate::scroll(qreal dx, qreal dy)
             {
                 if (dx < 0) m_presenter->setState(ChartPresenter::ScrollLeftState,QPointF());
                 if (dx > 0) m_presenter->setState(ChartPresenter::ScrollRightState,QPointF());
                 if (dy < 0) m_presenter->setState(ChartPresenter::ScrollUpState,QPointF());
                 if (dy > 0) m_presenter->setState(ChartPresenter::ScrollDownState,QPointF());
                 m_dataset->scrollDomain(dx, dy);
                 m_presenter->setState(ChartPresenter::ShowState,QPointF());
             }
             #include "moc_qchart.cpp"
             QTCOMMERCIALCHART_END_NAMESPACE

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