HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r2605:23dc25e6ce18

Fix ChartView visibility change drawing...

Titta Heikkala -

r2605:23dc25e6ce18

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r2605:23dc25e6ce18

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src/layout/abstractchartlayout.cpp +18 -16

             /****************************************************************************
             **
             ** 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 Enterprise Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Enterprise licenses may use this file in
             ** accordance with the Qt Enterprise 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 "abstractchartlayout_p.h"
             #include "chartpresenter_p.h"
             #include "qlegend_p.h"
             #include "chartaxiselement_p.h"
             #include "charttitle_p.h"
             #include "chartbackground_p.h"
             #include <QDebug>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             static const qreal golden_ratio = 0.4;
             AbstractChartLayout::AbstractChartLayout(ChartPresenter *presenter)
                 : m_presenter(presenter),
                   m_margins(20, 20, 20, 20),
                   m_minChartRect(0, 0, 200, 200)
             {
             }
             AbstractChartLayout::~AbstractChartLayout()
             {
             }
             void AbstractChartLayout::setGeometry(const QRectF &rect)
             {
                 if (!rect.isValid())
                     return;
-                QList<ChartAxisElement *> axes = m_presenter->axisItems();
+                if (m_presenter->chart()->isVisible()) {
-                ChartTitle *title = m_presenter->titleElement();
+                    QList<ChartAxisElement *> axes = m_presenter->axisItems();
-                QLegend *legend = m_presenter->legend();
+                    ChartTitle *title = m_presenter->titleElement();
-                ChartBackground *background = m_presenter->backgroundElement();
+                    QLegend *legend = m_presenter->legend();
+                    ChartBackground *background = m_presenter->backgroundElement();
-                QRectF contentGeometry = calculateBackgroundGeometry(rect, background);
+                    QRectF contentGeometry = calculateBackgroundGeometry(rect, background);
-                contentGeometry = calculateContentGeometry(contentGeometry);
+                    contentGeometry = calculateContentGeometry(contentGeometry);
-                if (title && title->isVisible())
+                    if (title && title->isVisible())
-                    contentGeometry = calculateTitleGeometry(contentGeometry, title);
+                        contentGeometry = calculateTitleGeometry(contentGeometry, title);
-                if (legend->isAttachedToChart() && legend->isVisible())
+                    if (legend->isAttachedToChart() && legend->isVisible())
-                    contentGeometry = calculateLegendGeometry(contentGeometry, legend);
+                        contentGeometry = calculateLegendGeometry(contentGeometry, legend);
-                contentGeometry = calculateAxisGeometry(contentGeometry, axes);
+                    contentGeometry = calculateAxisGeometry(contentGeometry, axes);
-                m_presenter->setGeometry(contentGeometry);
+                    m_presenter->setGeometry(contentGeometry);
-                if (m_presenter->chart()->chartType() == QChart::ChartTypeCartesian)
+                    if (m_presenter->chart()->chartType() == QChart::ChartTypeCartesian)
-                    static_cast<QGraphicsRectItem *>(m_presenter->plotAreaElement())->setRect(contentGeometry);
+                        static_cast<QGraphicsRectItem *>(m_presenter->plotAreaElement())->setRect(contentGeometry);
-                else
+                    else
-                    static_cast<QGraphicsEllipseItem *>(m_presenter->plotAreaElement())->setRect(contentGeometry);
+                        static_cast<QGraphicsEllipseItem *>(m_presenter->plotAreaElement())->setRect(contentGeometry);
+                }
                 QGraphicsLayout::setGeometry(rect);
             }
             QRectF AbstractChartLayout::calculateContentGeometry(const QRectF &geometry) const
             {
                 return geometry.adjusted(m_margins.left(), m_margins.top(), -m_margins.right(), -m_margins.bottom());
             }
             QRectF AbstractChartLayout::calculateContentMinimum(const QRectF &minimum) const
             {
                 return  minimum.adjusted(0, 0, m_margins.left() + m_margins.right(), m_margins.top() + m_margins.bottom());
             }
             QRectF AbstractChartLayout::calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background) const
             {
                 qreal left;
                 qreal top;
                 qreal right;
                 qreal bottom;
                 getContentsMargins(&left, &top, &right, &bottom);
                 QRectF backgroundGeometry = geometry.adjusted(left, top, -right, -bottom);
                 if (background)
                     background->setRect(backgroundGeometry);
                 return backgroundGeometry;
             }
             QRectF AbstractChartLayout::calculateBackgroundMinimum(const QRectF &minimum) const
             {
                 qreal left;
                 qreal top;
                 qreal right;
                 qreal bottom;
                 getContentsMargins(&left, &top, &right, &bottom);
                 return minimum.adjusted(0, 0, left + right, top + bottom);
             }
             QRectF AbstractChartLayout::calculateLegendGeometry(const QRectF &geometry, QLegend *legend) const
             {
                 QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize, QSizeF(-1, -1));
                 QRectF legendRect;
                 QRectF result;
                 switch (legend->alignment()) {
                 case Qt::AlignTop: {
                     legendRect = QRectF(geometry.topLeft(), QSizeF(geometry.width(), size.height()));
                     result = geometry.adjusted(0, legendRect.height(), 0, 0);
                     break;
                 }
                 case Qt::AlignBottom: {
                     legendRect = QRectF(QPointF(geometry.left(), geometry.bottom() - size.height()), QSizeF(geometry.width(), size.height()));
                     result = geometry.adjusted(0, 0, 0, -legendRect.height());
                     break;
                 }
                 case Qt::AlignLeft: {
                     qreal width = qMin(size.width(), geometry.width() * golden_ratio);
                     legendRect = QRectF(geometry.topLeft(), QSizeF(width, geometry.height()));
                     result = geometry.adjusted(width, 0, 0, 0);
                     break;
                 }
                 case Qt::AlignRight: {
                     qreal width = qMin(size.width(), geometry.width() * golden_ratio);
                     legendRect = QRectF(QPointF(geometry.right() - width, geometry.top()), QSizeF(width, geometry.height()));
                     result = geometry.adjusted(0, 0, -width, 0);
                     break;
                 }
                 default: {
                     legendRect = QRectF(0, 0, 0, 0);
                     result = geometry;
                     break;
                 }
                 }
                 legend->setGeometry(legendRect);
                 return result;
             }
             QRectF AbstractChartLayout::calculateLegendMinimum(const QRectF &geometry, QLegend *legend) const
             {
                 QSizeF minSize = legend->effectiveSizeHint(Qt::MinimumSize, QSizeF(-1, -1));
                 return geometry.adjusted(0, 0, minSize.width(), minSize.height());
             }
             QRectF AbstractChartLayout::calculateTitleGeometry(const QRectF &geometry, ChartTitle *title) const
             {
                 title->setGeometry(geometry);
                 QPointF center = geometry.center() - title->boundingRect().center();
                 title->setPos(center.x(), title->pos().y());
                 return geometry.adjusted(0, title->boundingRect().height()+1, 0, 0);
             }
             QRectF AbstractChartLayout::calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const
             {
                 QSizeF min = title->sizeHint(Qt::MinimumSize);
                 return  minimum.adjusted(0, 0, min.width(), min.height());
             }
             QSizeF AbstractChartLayout::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
             {
                 Q_UNUSED(constraint);
                 if (which == Qt::MinimumSize) {
                     QList<ChartAxisElement *> axes = m_presenter->axisItems();
                     ChartTitle *title = m_presenter->titleElement();
                     QLegend *legend = m_presenter->legend();
                     QRectF minimumRect(0, 0, 0, 0);
                     minimumRect = calculateBackgroundMinimum(minimumRect);
                     minimumRect = calculateContentMinimum(minimumRect);
                     minimumRect = calculateTitleMinimum(minimumRect, title);
                     minimumRect = calculateLegendMinimum(minimumRect, legend);
                     minimumRect = calculateAxisMinimum(minimumRect, axes);
                     return  minimumRect.united(m_minChartRect).size().toSize();
                 }
                 return QSize(-1, -1);
             }
             void AbstractChartLayout::setMargins(const QMargins &margins)
             {
                 if (m_margins != margins) {
                     m_margins = margins;
                     updateGeometry();
                 }
             }
             QMargins AbstractChartLayout::margins() const
             {
                 return m_margins;
             }
             QTCOMMERCIALCHART_END_NAMESPACE

src/legend/qlegend.cpp +3 -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 Enterprise Charts Add-on.
              **
              ** $QT_BEGIN_LICENSE$
              ** Licensees holding valid Qt Enterprise licenses may use this file in
              ** accordance with the Qt Enterprise 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 "qlegend.h"
             #include "qlegend_p.h"
             #include "qabstractseries.h"
             #include "qabstractseries_p.h"
             #include "qchart_p.h"
             #include "legendlayout_p.h"
             #include "chartpresenter_p.h"
             #include "abstractchartlayout_p.h"
             #include "qlegendmarker.h"
             #include "qlegendmarker_p.h"
             #include "legendmarkeritem_p.h"
             #include "chartdataset_p.h"
             #include <QPainter>
             #include <QPen>
             #include <QGraphicsItemGroup>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             /*!
                 \class QLegend
                 \brief Legend object.
                 \mainclass
                 QLegend is a graphical object for displaying the legend of the chart. Legend state is updated by QChart, when
                 series have been changed. By default, legend is drawn by QChart, but user can set a new parent to legend and
                 handle the drawing manually.
                 User isn't supposed to create or delete legend objects, but can reference it via QChart class.
                 \image examples_percentbarchart_legend.png
                 \sa QChart
             */
             /*!
                 \qmlclass Legend QLegend
                 \brief Legend is part of Qt Chart QML API.
                 Legend is a graphical object, whics displays legend of the chart. Legend state is updated by ChartView, when
                 series have been changed. Legend is used via ChartView class. For example:
                 \code
                     ChartView {
                         legend.visible: true
                         legend.alignment: Qt.AlignBottom
                         // Add a few series...
                     }
                 \endcode
                 \image examples_percentbarchart_legend.png
                 Please note that there is no QML API available for modifying legend markers, unlike in the Qt API of Charts.
                 The use case of modifying markers can be implemented for example by creating your own custom legend. For an example
                 on how to do this, see \l {demos/qmlcustomlegend}{Qml Custom Demo} application.
             */
             /*!
                 \property QLegend::alignment
                 \brief The alignment of the legend.
                 Legend paints on the defined position in the chart. The following alignments are supported:
                 Qt::AlignTop, Qt::AlignBottom, Qt::AlignLeft, Qt::AlignRight. If you set more than one flag the result is undefined.
             */
             /*!
                 \qmlproperty Qt.Alignment Legend::alignment
                 \brief The alignment of the legend.
                 Legend paints on the defined position in the chart. The following alignments are supported:
                 Qt.AlignTop, Qt.AlignBottom, Qt.AlignLeft, Qt.AlignRight. If you set more than one flag the result is undefined.
             */
             /*!
                 \property QLegend::backgroundVisible
                 Whether the legend background is visible or not.
             */
             /*!
                 \qmlproperty bool Legend::backgroundVisible
                 Whether the legend background is visible or not.
             */
             /*!
                 \property QLegend::color
                 The color of the legend, i.e. the background (brush) color. Note that if you change the color
                 of the legend, the style of the legend brush is set to Qt::SolidPattern.
             */
             /*!
                 \qmlproperty color Legend::color
                 The color of the legend, i.e. the background (brush) color.
             */
             /*!
                 \property QLegend::borderColor
                 The border color of the legend, i.e. the line color.
             */
             /*!
                 \qmlproperty color Legend::borderColor
                 The border color of the legend, i.e. the line color.
             */
             /*!
                 \property QLegend::font
                 The font of markers used by legend
             */
             /*!
                 \qmlproperty Font Legend::font
                 The font of markers used by legend
             */
             /*!
                 \property QLegend::labelColor
                 The color of brush used to draw labels.
             */
             /*!
                 \qmlproperty color QLegend::labelColor
                 The color of brush used to draw labels.
             */
             /*!
                 \fn void QLegend::backgroundVisibleChanged(bool)
                 The visibility of the legend background changed to \a visible.
             */
             /*!
                 \fn void QLegend::colorChanged(QColor)
                 The color of the legend background changed to \a color.
             */
             /*!
                 \fn void QLegend::borderColorChanged(QColor)
                 The border color of the legend background changed to \a color.
             */
             /*!
                 \fn void QLegend::fontChanged(QFont)
                 The font of markers of the legend changed to \a font.
             */
             /*!
                 \fn void QLegend::labelColorChanged(QColor color)
                 This signal is emitted when the color of brush used to draw labels has changed to \a color.
             */
             QLegend::QLegend(QChart *chart): QGraphicsWidget(chart),
                 d_ptr(new QLegendPrivate(chart->d_ptr->m_presenter, chart, this))
             {
                 setZValue(ChartPresenter::LegendZValue);
                 setFlags(QGraphicsItem::ItemClipsChildrenToShape);
                 QObject::connect(chart->d_ptr->m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), d_ptr.data(), SLOT(handleSeriesAdded(QAbstractSeries*)));
                 QObject::connect(chart->d_ptr->m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), d_ptr.data(), SLOT(handleSeriesRemoved(QAbstractSeries*)));
                 setLayout(d_ptr->m_layout);
             }
             /*!
                 Destroys the legend object. Legend is always owned by a QChart, so an application should never call this.
             */
             QLegend::~QLegend()
             {
             }
             /*!
              \internal
              */
             void QLegend::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
             {
                 Q_UNUSED(option)
                 Q_UNUSED(widget)
                 if (!d_ptr->m_backgroundVisible)
                     return;
                 painter->setOpacity(opacity());
                 painter->setPen(d_ptr->m_pen);
                 painter->setBrush(d_ptr->m_brush);
                 painter->drawRoundRect(rect(), d_ptr->roundness(rect().width()), d_ptr->roundness(rect().height()));
             }
             /*!
              Sets the \a brush of legend. Brush affects the background of legend.
              */
             void QLegend::setBrush(const QBrush &brush)
             {
                 if (d_ptr->m_brush != brush) {
                     d_ptr->m_brush = brush;
                     update();
                     emit colorChanged(brush.color());
                 }
             }
             /*!
              Returns the brush used by legend.
              */
             QBrush QLegend::brush() const
             {
                 return d_ptr->m_brush;
             }
             void QLegend::setColor(QColor color)
             {
                 QBrush b = d_ptr->m_brush;
                 if (b.style() != Qt::SolidPattern || b.color() != color) {
                     b.setStyle(Qt::SolidPattern);
                     b.setColor(color);
                     setBrush(b);
                 }
             }
             QColor QLegend::color()
             {
                 return d_ptr->m_brush.color();
             }
             /*!
              Sets the \a pen of legend. Pen affects the legend borders.
              */
             void QLegend::setPen(const QPen &pen)
             {
                 if (d_ptr->m_pen != pen) {
                     d_ptr->m_pen = pen;
                     update();
                     emit borderColorChanged(pen.color());
                 }
             }
             /*!
              Returns the pen used by legend
              */
             QPen QLegend::pen() const
             {
                 return d_ptr->m_pen;
             }
             void QLegend::setFont(const QFont &font)
             {
                 if (d_ptr->m_font != font) {
                     d_ptr->m_font = font;
                     foreach (QLegendMarker *marker, d_ptr->markers()) {
                         marker->setFont(d_ptr->m_font);
                     }
                     layout()->invalidate();
                     emit fontChanged(font);
                 }
             }
             QFont QLegend::font() const
             {
                 return d_ptr->m_font;
             }
             void QLegend::setBorderColor(QColor color)
             {
                 QPen p = d_ptr->m_pen;
                 if (p.color() != color) {
                     p.setColor(color);
                     setPen(p);
                 }
             }
             QColor QLegend::borderColor()
             {
                 return d_ptr->m_pen.color();
             }
             /*!
                 Set brush used to draw labels to \a brush.
             */
             void QLegend::setLabelBrush(const QBrush &brush)
             {
                 if (d_ptr->m_labelBrush != brush) {
                     d_ptr->m_labelBrush = brush;
                     foreach (QLegendMarker *marker, d_ptr->markers()) {
                         marker->setLabelBrush(d_ptr->m_labelBrush);
                         // Note: The pen of the marker rectangle could be exposed in the public QLegend API
                         // instead of mapping it from label brush color
                         marker->setPen(brush.color());
                     }
                     emit labelColorChanged(brush.color());
                 }
             }
             /*!
                 Brush used to draw labels.
             */
             QBrush QLegend::labelBrush() const
             {
                 return d_ptr->m_labelBrush;
             }
             void QLegend::setLabelColor(QColor color)
             {
                 QBrush b = d_ptr->m_labelBrush;
                 if (b.style() != Qt::SolidPattern || b.color() != color) {
                     b.setStyle(Qt::SolidPattern);
                     b.setColor(color);
                     setLabelBrush(b);
                 }
             }
             QColor QLegend::labelColor() const
             {
                 return d_ptr->m_labelBrush.color();
             }
             void QLegend::setAlignment(Qt::Alignment alignment)
             {
                 if (d_ptr->m_alignment != alignment) {
                     d_ptr->m_alignment = alignment;
                     layout()->invalidate();
                 }
             }
             Qt::Alignment QLegend::alignment() const
             {
                 return d_ptr->m_alignment;
             }
             /*!
              Detaches the legend from chart. Chart won't change layout of the legend.
              */
             void QLegend::detachFromChart()
             {
                 d_ptr->m_attachedToChart = false;
             //    layout()->invalidate();
                 d_ptr->m_chart->layout()->invalidate();
                 setParent(0);
             }
             /*!
              Attaches the legend to chart. Chart may change layout of the legend.
              */
             void QLegend::attachToChart()
             {
                 d_ptr->m_attachedToChart = true;
             //    layout()->invalidate();
                 d_ptr->m_chart->layout()->invalidate();
                 setParent(d_ptr->m_chart);
             }
             /*!
              Returns true, if legend is attached to chart.
              */
             bool QLegend::isAttachedToChart()
             {
                 return d_ptr->m_attachedToChart;
             }
             /*!
              Sets the visibility of legend background to \a visible
              */
             void QLegend::setBackgroundVisible(bool visible)
             {
                 if (d_ptr->m_backgroundVisible != visible) {
                     d_ptr->m_backgroundVisible = visible;
                     update();
                     emit backgroundVisibleChanged(visible);
                 }
             }
             /*!
              Returns the visibility of legend background
              */
             bool QLegend::isBackgroundVisible() const
             {
                 return d_ptr->m_backgroundVisible;
             }
             /*!
               Returns the list of markers in legend. The list can be filtered with \a series parameter.
               If \a series is given, only markers related to that series are returned.
             */
             QList<QLegendMarker*> QLegend::markers(QAbstractSeries *series) const
             {
                 return d_ptr->markers(series);
             }
             /*!
              \internal \a event see QGraphicsWidget for details
              */
             void QLegend::hideEvent(QHideEvent *event)
             {
                 if (isAttachedToChart())
                     d_ptr->m_presenter->layout()->invalidate();
                 QGraphicsWidget::hideEvent(event);
             }
             /*!
              \internal \a event see QGraphicsWidget for details
              */
             void QLegend::showEvent(QShowEvent *event)
             {
                 if (isAttachedToChart())
                     layout()->invalidate();
                 QGraphicsWidget::showEvent(event);
                 //layout activation will show the items
             }
             ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
             QLegendPrivate::QLegendPrivate(ChartPresenter *presenter, QChart *chart, QLegend *q)
                 : q_ptr(q),
                   m_presenter(presenter),
                   m_layout(new LegendLayout(q)),
                   m_chart(chart),
                   m_items(new QGraphicsItemGroup(q)),
                   m_alignment(Qt::AlignTop),
                   m_brush(QBrush()),
                   m_pen(QPen()),
                   m_labelBrush(QBrush()),
                   m_diameter(5),
                   m_attachedToChart(true),
                   m_backgroundVisible(false)
             {
                 m_items->setHandlesChildEvents(false);
             }
             QLegendPrivate::~QLegendPrivate()
             {
             }
             void QLegendPrivate::setOffset(const QPointF &offset)
             {
                 m_layout->setOffset(offset.x(), offset.y());
             }
             QPointF QLegendPrivate::offset() const
             {
                 return m_layout->offset();
             }
             int QLegendPrivate::roundness(qreal size)
             {
                 return 100 * m_diameter / int(size);
             }
             QList<QLegendMarker*> QLegendPrivate::markers(QAbstractSeries *series)
             {
                 // Return all markers
                 if (!series) {
                     return m_markers;
                 }
                 // Create filtered list
                 QList<QLegendMarker *> markers;
                 foreach (QLegendMarker *marker, m_markers) {
                     if (marker->series() == series) {
                         markers.append(marker);
                     }
                 }
                 return markers;
             }
             void QLegendPrivate::handleSeriesAdded(QAbstractSeries *series)
             {
                 if (m_series.contains(series)) {
                     return;
                 }
                 QList<QLegendMarker*> newMarkers = series->d_ptr->createLegendMarkers(q_ptr);
                 decorateMarkers(newMarkers);
                 addMarkers(newMarkers);
                 QObject::connect(series->d_ptr.data(), SIGNAL(countChanged()), this, SLOT(handleCountChanged()));
                 QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleSeriesVisibleChanged()));
                 m_series.append(series);
                 m_items->setVisible(false);
                 m_layout->invalidate();
             }
             void QLegendPrivate::handleSeriesRemoved(QAbstractSeries *series)
             {
                 if (m_series.contains(series)) {
                     m_series.removeOne(series);
                 }
                 // Find out, which markers to remove
                 QList<QLegendMarker *> removed;
                 foreach (QLegendMarker *m, m_markers) {
                     if (m->series() == series) {
                         removed << m;
                     }
                 }
                 removeMarkers(removed);
                 QObject::disconnect(series->d_ptr.data(), SIGNAL(countChanged()), this, SLOT(handleCountChanged()));
                 QObject::disconnect(series, SIGNAL(visibleChanged()), this, SLOT(handleSeriesVisibleChanged()));
                 m_layout->invalidate();
             }
             void QLegendPrivate::handleSeriesVisibleChanged()
             {
                 QAbstractSeries *series = qobject_cast<QAbstractSeries *> (sender());
                 Q_ASSERT(series);
                 foreach (QLegendMarker *marker, m_markers) {
                     if (marker->series() == series) {
                         marker->setVisible(series->isVisible());
                     }
                 }
-                m_layout->invalidate();
+                if (m_chart->isVisible())
+                    m_layout->invalidate();
             }
             void QLegendPrivate::handleCountChanged()
             {
                 // Here we handle the changes in marker count.
                 // Can happen for example when pieslice(s) have been added to or removed from pieseries.
                 QAbstractSeriesPrivate *series = qobject_cast<QAbstractSeriesPrivate *> (sender());
                 QList<QLegendMarker *> createdMarkers = series->createLegendMarkers(q_ptr);
                 // Find out removed markers and created markers
                 QList<QLegendMarker *> removedMarkers;
                 foreach (QLegendMarker *oldMarker, m_markers) {
                     // we have marker, which is related to sender.
                     if (oldMarker->series() == series->q_ptr) {
                         bool found = false;
                         foreach(QLegendMarker *newMarker, createdMarkers) {
                             // New marker considered existing if:
                             // - d_ptr->relatedObject() is same for both markers.
                             if (newMarker->d_ptr->relatedObject() == oldMarker->d_ptr->relatedObject()) {
                                 // Delete the new marker, since we already have existing marker, that might be connected on user side.
                                 found = true;
                                 createdMarkers.removeOne(newMarker);
                                 delete newMarker;
                             }
                         }
                         if (!found) {
                             // No related object found for marker, add to removedMarkers list
                             removedMarkers << oldMarker;
                         }
                     }
                 }
                 removeMarkers(removedMarkers);
                 decorateMarkers(createdMarkers);
                 addMarkers(createdMarkers);
                 q_ptr->layout()->invalidate();
             }
             void QLegendPrivate::addMarkers(QList<QLegendMarker *> markers)
             {
                 foreach (QLegendMarker *marker, markers) {
                     m_items->addToGroup(marker->d_ptr.data()->item());
                     m_markers << marker;
                     m_markerHash.insert(marker->d_ptr->item(), marker);
                 }
             }
             void QLegendPrivate::removeMarkers(QList<QLegendMarker *> markers)
             {
                 foreach (QLegendMarker *marker, markers) {
                     marker->d_ptr->item()->setVisible(false);
                     m_items->removeFromGroup(marker->d_ptr->item());
                     m_markers.removeOne(marker);
                     m_markerHash.remove(marker->d_ptr->item());
                     delete marker;
                 }
             }
             void QLegendPrivate::decorateMarkers(QList<QLegendMarker *> markers)
             {
                 foreach (QLegendMarker *marker, markers) {
                     marker->setFont(m_font);
                     marker->setLabelBrush(m_labelBrush);
                 }
             }
             #include "moc_qlegend.cpp"
             #include "moc_qlegend_p.cpp"
             QTCOMMERCIALCHART_END_NAMESPACE

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