HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r2852:5f71da41b84f

Fix color setting...

Titta Heikkala -

r2852:5f71da41b84f

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r2852:5f71da41b84f

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src/charts/axis/qabstractaxis.cpp +5 -5

              /******************************************************************************
              **
              ** Copyright (C) 2015 The Qt Company Ltd.
              ** Contact: http://www.qt.io/licensing/
              **
              ** This file is part of the Qt Charts module.
              **
              ** $QT_BEGIN_LICENSE:COMM$
              **
              ** Commercial License Usage
              ** Licensees holding valid commercial Qt licenses may use this file in
              ** accordance with the commercial license agreement provided with the
              ** Software or, alternatively, in accordance with the terms contained in
              ** a written agreement between you and The Qt Company. For licensing terms
              ** and conditions see http://www.qt.io/terms-conditions. For further
              ** information use the contact form at http://www.qt.io/contact-us.
              **
              ** $QT_END_LICENSE$
              **
              ******************************************************************************/
              #include <QtCharts/QAbstractAxis>
              #include <private/qabstractaxis_p.h>
              #include <private/chartdataset_p.h>
              #include <private/charttheme_p.h>
              #include <private/qchart_p.h>
              QT_CHARTS_BEGIN_NAMESPACE
              /*!
                  \class QAbstractAxis
                  \inmodule Qt Charts
                  \brief The QAbstractAxis class is used for manipulating chart's axis.
                  Each series can be bound to one or more horizontal and vertical axes, but mixing axis types
                  that would result in different domains is not supported, such as specifying
                  QValueAxis and QLogValueAxis on the same orientation.
                  Properties and visibility of various axis elements such as axis line, title, labels, grid lines,
                  and shades can be individually controlled.
              */
              /*!
                  \qmltype AbstractAxis
                  \instantiates QAbstractAxis
                  \inqmlmodule QtCharts
                  \brief The AbstractAxis is a base element used for specialized axis elements.
                  Each series can be bound to only one horizontal and vertical axis.
                  Properties and visibility of various axis elements such as axis line, title, labels, grid lines,
                  and shades can be individually controlled.
              */
              /*!
                  \enum QAbstractAxis::AxisType
                  The type of the axis object.
                  \value AxisTypeNoAxis
                  \value AxisTypeValue
                  \value AxisTypeBarCategory
                  \value AxisTypeCategory
                  \value AxisTypeDateTime
                  \value AxisTypeLogValue
              */
              /*!
               *\fn void QAbstractAxis::type() const
                Returns the type of the axis
              */
              /*!
                \property QAbstractAxis::lineVisible
                The visibility of the axis line
              */
              /*!
                \qmlproperty bool AbstractAxis::lineVisible
                The visibility of the axis line
              */
              /*!
                \property QAbstractAxis::linePen
                The pen of the line.
              */
              /*!
                \property QAbstractAxis::labelsVisible
                Defines if axis labels are visible.
              */
              /*!
                \qmlproperty bool AbstractAxis::labelsVisible
                Defines if axis labels are visible.
              */
              /*!
                \property QAbstractAxis::labelsBrush
                The brush of the labels. Only the color of the brush is relevant.
              */
              /*!
                \property QAbstractAxis::visible
                The visibility of the axis.
              */
              /*!
                \qmlproperty bool AbstractAxis::visible
                The visibility of the axis.
              */
              /*!
                \property QAbstractAxis::gridVisible
                The visibility of the grid lines.
              */
              /*!
                \qmlproperty bool AbstractAxis::gridVisible
                The visibility of the grid lines.
              */
              /*!
                \property QAbstractAxis::minorGridVisible
                The visibility of the minor grid lines. Applies only to QValueAxis.
              */
              /*!
                \qmlproperty bool AbstractAxis::minorGridVisible
                The visibility of the minor grid lines. Applies only to QValueAxis.
              */
              /*!
                \property QAbstractAxis::color
                The color of the axis and ticks.
              */
              /*!
                \qmlproperty color AbstractAxis::color
                The color of the axis and ticks.
              */
              /*!
                \property QAbstractAxis::gridLinePen
                The pen of the grid line.
              */
              /*!
                \property QAbstractAxis::minorGridLinePen
                The pen of the minor grid line. Applies only to QValueAxis.
              */
              /*!
                \property QAbstractAxis::gridLineColor
                The color of the grid line.
              */
              /*!
                \property QAbstractAxis::minorGridLineColor
                The color of the minor grid line. Applies only to QValueAxis.
              */
              /*!
                \property QAbstractAxis::labelsFont
                The font of the axis labels.
              */
              /*!
                \qmlproperty Font AbstractAxis::labelsFont
                The font of the axis labels.
                See the Qt documentation for more details of Font.
              */
              /*!
                \property QAbstractAxis::labelsColor
                The color of the axis labels.
              */
              /*!
                \qmlproperty color AbstractAxis::labelsColor
                The color of the axis labels.
              */
              /*!
                \property QAbstractAxis::labelsAngle
                The angle of the axis labels in degrees.
              */
              /*!
                \qmlproperty int AbstractAxis::labelsAngle
                The angle of the axis labels in degrees.
              */
              /*!
                \property QAbstractAxis::shadesVisible
                The visibility of the axis shades.
              */
              /*!
                \qmlproperty bool AbstractAxis::shadesVisible
                The visibility of the axis shades.
              */
              /*!
                \property QAbstractAxis::shadesColor
                The fill (brush) color of the axis shades.
              */
              /*!
                \qmlproperty color AbstractAxis::shadesColor
                The fill (brush) color of the axis shades.
              */
              /*!
                \property QAbstractAxis::shadesBorderColor
                The border (pen) color of the axis shades.
              */
              /*!
                \qmlproperty color AbstractAxis::shadesBorderColor
                The border (pen) color of the axis shades.
              */
              /*!
                \property QAbstractAxis::shadesPen
                The pen of the axis shades (area between grid lines).
              */
              /*!
                \property QAbstractAxis::shadesBrush
                The brush of the axis shades (area between grid lines).
              */
              /*!
                \property QAbstractAxis::titleVisible
                The visibility of the axis title. By default the value is true.
              */
              /*!
                \qmlproperty bool AbstractAxis::titleVisible
                The visibility of the axis title. By default the value is true.
              */
              /*!
                \property QAbstractAxis::titleText
                The title of the axis. Empty by default. Axis titles support html formatting.
              */
              /*!
                \qmlproperty String AbstractAxis::titleText
                The title of the axis. Empty by default. Axis titles support html formatting.
              */
              /*!
                \property QAbstractAxis::titleBrush
                The brush of the title text. Only the color of the brush is relevant.
              */
              /*!
                \property QAbstractAxis::titleFont
                The font of the title of the axis.
              */
              /*!
                \qmlproperty Font AbstractAxis::titleFont
                The font of the title of the axis.
              */
              /*!
                \property QAbstractAxis::orientation
                The orientation of the axis. Fixed to either Qt::Horizontal or Qt::Vertical when you add the axis to a chart.
              */
              /*!
                \qmlproperty Qt.Orientation AbstractAxis::orientation
                The orientation of the axis. Fixed to either Qt.Horizontal or Qt.Vertical when the axis is set to a series.
              */
              /*!
                \property QAbstractAxis::alignment
                The alignment of the axis. Can be Qt::AlignLeft, Qt::AlignRight, Qt::AlignBottom, or Qt::AlignTop.
              */
              /*!
                \qmlproperty alignment AbstractAxis::alignment
                The alignment of the axis. Can be Qt.AlignLeft, Qt.AlignRight, Qt.AlignBottom, or Qt.AlignTop.
              */
              /*!
                \property QAbstractAxis::reverse
                The reverse property defines if reverse axis is used. By default the value is false.
                Reverse axis is supported with line, spline, scatter and area series with cartesian chart.
                All axes of the same orientation attached to same series must be reversed if one is reversed or
                the behavior is undefined.
              */
              /*!
                \qmlproperty alignment AbstractAxis::reverse
                The reverse property defines if reverse axis is used. By default the value is false.
                Reverse axis is supported with line, spline, scatter and area series with cartesian chart.
                All axes of the same orientation attached to same series must be reversed if one is reversed or
                the behavior is undefined.
              */
              /*!
                \fn void QAbstractAxis::visibleChanged(bool visible)
                Visibility of the axis has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onVisibleChanged(bool visible)
                Visibility of the axis has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::linePenChanged(const QPen& pen)
                The pen of the line of the axis has changed to \a pen.
              */
              /*!
                \fn void QAbstractAxis::lineVisibleChanged(bool visible)
                Visibility of the axis line has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onLineVisibleChanged(bool visible)
                Visibility of the axis line has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::labelsVisibleChanged(bool visible)
                Visibility of the labels of the axis has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onLabelsVisibleChanged(bool visible)
                Visibility of the labels of the axis has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::labelsFontChanged(const QFont& font)
                The font of the axis labels has changed to \a font.
              */
              /*!
                \qmlsignal AbstractAxis::onLabelsFontChanged(Font font)
                The font of the axis labels has changed to \a font.
              */
              /*!
                \fn void QAbstractAxis::labelsBrushChanged(const QBrush& brush)
                The brush of the axis labels has changed to \a brush.
              */
              /*!
                \fn void QAbstractAxis::labelsAngleChanged(int angle)
                The angle of the axis labels has changed to \a angle.
              */
              /*!
                \qmlsignal AbstractAxis::onLabelsAngleChanged(int angle)
                The angle of the axis labels has changed to \a angle.
              */
              /*!
                \fn void QAbstractAxis::gridVisibleChanged(bool visible)
                Visibility of the grid lines of the axis has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onGridVisibleChanged(bool visible)
                Visibility of the grid lines of the axis has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::minorGridVisibleChanged(bool visible)
                Visibility of the minor grid lines of the axis has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onMinorGridVisibleChanged(bool visible)
                Visibility of the minor grid lines of the axis has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::gridLinePenChanged(const QPen& pen)
                The pen of the grid line has changed to \a pen.
              */
              /*!
                \fn void QAbstractAxis::minorGridLinePenChanged(const QPen& pen)
                The pen of the minor grid line has changed to \a pen.
              */
              /*!
                \fn void QAbstractAxis::gridLineColorChanged(const QColor &color)
                The color of the pen of the grid line has changed to \a color.
              */
              /*!
                \fn void QAbstractAxis::minorGridLineColorChanged(const QColor &color)
                The color of the pen of the minor grid line has changed to \a color.
              */
              /*!
                \fn void QAbstractAxis::colorChanged(QColor color)
                Emitted if the \a color of the axis is changed.
              */
              /*!
                \qmlsignal AbstractAxis::onColorChanged(QColor color)
                Emitted if the \a color of the axis is changed.
              */
              /*!
                \fn void QAbstractAxis::labelsColorChanged(QColor color)
                Emitted if the \a color of the axis labels is changed.
              */
              /*!
                \qmlsignal AbstractAxis::onLabelsColorChanged(QColor color)
                Emitted if the \a color of the axis labels is changed.
              */
              /*!
                \fn void QAbstractAxis::titleVisibleChanged(bool visible)
                Visibility of the title text of the axis has changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onTitleVisibleChanged(bool visible)
                Visibility of the title text of the axis has changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::titleTextChanged(const QString& text)
                The text of the axis title has changed to \a text.
              */
              /*!
                \qmlsignal AbstractAxis::onTitleTextChanged(String text)
                The text of the axis title has changed to \a text.
              */
              /*!
                \fn void QAbstractAxis::titleBrushChanged(const QBrush& brush)
                The brush of the axis title has changed to \a brush.
              */
              /*!
                \fn void QAbstractAxis::titleFontChanged(const QFont& font)
                The font of the axis title has changed to \a font.
              */
              /*!
                \qmlsignal AbstractAxis::onTitleFontChanged(Font font)
                The font of the axis title has changed to \a font.
              */
              /*!
                \fn void QAbstractAxis::shadesVisibleChanged(bool)
                Emitted if the visibility of the axis shades is changed to \a visible.
              */
              /*!
                \qmlsignal AbstractAxis::onShadesVisibleChanged(bool visible)
                Emitted if the visibility of the axis shades is changed to \a visible.
              */
              /*!
                \fn void QAbstractAxis::shadesColorChanged(QColor color)
                Emitted if the \a color of the axis shades is changed.
              */
              /*!
                \qmlsignal AbstractAxis::onShadesColorChanged(QColor color)
                Emitted if the \a color of the axis shades is changed.
              */
              /*!
                \fn void QAbstractAxis::shadesBorderColorChanged(QColor)
                Emitted if the border \a color of the axis shades is changed.
              */
              /*!
                \qmlsignal AbstractAxis::onBorderColorChanged(QColor color)
                Emitted if the border \a color of the axis shades is changed.
              */
              /*!
                \fn void QAbstractAxis::shadesBrushChanged(const QBrush& brush)
                The brush of the axis shades has changed to \a brush.
              */
              /*!
                \fn void QAbstractAxis::shadesPenChanged(const QPen& pen)
                The pen of the axis shades has changed to \a pen.
              */
              /*!
               \internal
                Constructs new axis object which is a child of \a parent. Ownership is taken by
                QChart when axis added.
              */
              QAbstractAxis::QAbstractAxis(QAbstractAxisPrivate &d, QObject *parent)
                  : QObject(parent),
                    d_ptr(&d)
              {
              }
              /*!
                Destructor of the axis object. When axis is added to chart, chart object takes ownership.
              */
              QAbstractAxis::~QAbstractAxis()
              {
                  if (d_ptr->m_chart)
                      qFatal("Still binded axis detected !");
              }
              /*!
                Sets \a pen used to draw axis line and ticks.
               */
              void QAbstractAxis::setLinePen(const QPen &pen)
              {
                  if (d_ptr->m_axisPen != pen) {
                      d_ptr->m_axisPen = pen;
                      emit linePenChanged(pen);
                  }
              }
              /*!
                Returns pen used to draw axis and ticks.
              */
              QPen QAbstractAxis::linePen() const
              {
                  if (d_ptr->m_axisPen == QChartPrivate::defaultPen())
                      return QPen();
                  else
                      return d_ptr->m_axisPen;
              }
              void QAbstractAxis::setLinePenColor(QColor color)
              {
-                 QPen p = d_ptr->m_axisPen;
+                 QPen p = linePen();
                  if (p.color() != color) {
                      p.setColor(color);
                      setLinePen(p);
                      emit colorChanged(color);
                  }
              }
              QColor QAbstractAxis::linePenColor() const
              {
                  return linePen().color();
              }
              /*!
                Sets if axis and ticks are \a visible.
               */
              void QAbstractAxis::setLineVisible(bool visible)
              {
                  if (d_ptr->m_arrowVisible != visible) {
                      d_ptr->m_arrowVisible = visible;
                      emit lineVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::isLineVisible() const
              {
                  return d_ptr->m_arrowVisible;
              }
              void QAbstractAxis::setGridLineVisible(bool visible)
              {
                  if (d_ptr->m_gridLineVisible != visible) {
                      d_ptr->m_gridLineVisible = visible;
                      emit gridVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::isGridLineVisible() const
              {
                  return d_ptr->m_gridLineVisible;
              }
              void QAbstractAxis::setMinorGridLineVisible(bool visible)
              {
                  if (d_ptr->m_minorGridLineVisible != visible) {
                      d_ptr->m_minorGridLineVisible = visible;
                      emit minorGridVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::isMinorGridLineVisible() const
              {
                  return d_ptr->m_minorGridLineVisible;
              }
              /*!
                Sets \a pen used to draw grid line.
              */
              void QAbstractAxis::setGridLinePen(const QPen &pen)
              {
                  if (d_ptr->m_gridLinePen != pen) {
                      d_ptr->m_gridLinePen = pen;
                      emit gridLinePenChanged(pen);
                  }
              }
              /*!
                Returns pen used to draw grid.
              */
              QPen QAbstractAxis::gridLinePen() const
              {
                  if (d_ptr->m_gridLinePen == QChartPrivate::defaultPen())
                      return QPen();
                  else
                      return d_ptr->m_gridLinePen;
              }
              void QAbstractAxis::setMinorGridLinePen(const QPen &pen)
              {
                  if (d_ptr->m_minorGridLinePen != pen) {
                      d_ptr->m_minorGridLinePen = pen;
                      emit minorGridLinePenChanged(pen);
                  }
              }
              QPen QAbstractAxis::minorGridLinePen() const
              {
                  if (d_ptr->m_minorGridLinePen == QChartPrivate::defaultPen())
                      return QPen();
                  else
                      return d_ptr->m_minorGridLinePen;
              }
              void QAbstractAxis::setGridLineColor(const QColor &color)
              {
-                 QPen pen = d_ptr->m_gridLinePen;
+                 QPen pen = gridLinePen();
                  if (color != pen.color()) {
                      pen.setColor(color);
                      d_ptr->m_gridLinePen = pen;
                      emit gridLineColorChanged(color);
                  }
              }
              QColor QAbstractAxis::gridLineColor()
              {
                  return d_ptr->m_gridLinePen.color();
              }
              void QAbstractAxis::setMinorGridLineColor(const QColor &color)
              {
-                 QPen pen = d_ptr->m_minorGridLinePen;
+                 QPen pen = minorGridLinePen();
                  if (color != pen.color()) {
                      pen.setColor(color);
                      d_ptr->m_minorGridLinePen = pen;
                      emit minorGridLineColorChanged(color);
                  }
              }
              QColor QAbstractAxis::minorGridLineColor()
              {
                  return d_ptr->m_minorGridLinePen.color();
              }
              void QAbstractAxis::setLabelsVisible(bool visible)
              {
                  if (d_ptr->m_labelsVisible != visible) {
                      d_ptr->m_labelsVisible = visible;
                      emit labelsVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::labelsVisible() const
              {
                  return d_ptr->m_labelsVisible;
              }
              /*!
                Sets \a brush used to draw labels.
               */
              void QAbstractAxis::setLabelsBrush(const QBrush &brush)
              {
                  if (d_ptr->m_labelsBrush != brush) {
                      d_ptr->m_labelsBrush = brush;
                      emit labelsBrushChanged(brush);
                  }
              }
              /*!
                Returns brush used to draw labels.
              */
              QBrush  QAbstractAxis::labelsBrush() const
              {
                  if (d_ptr->m_labelsBrush == QChartPrivate::defaultBrush())
                      return QBrush();
                  else
                      return d_ptr->m_labelsBrush;
              }
              /*!
                Sets \a font used to draw labels.
              */
              void QAbstractAxis::setLabelsFont(const QFont &font)
              {
                  if (d_ptr->m_labelsFont != font) {
                      d_ptr->m_labelsFont = font;
                      emit labelsFontChanged(font);
                  }
              }
              /*!
                Returns font used to draw labels.
              */
              QFont QAbstractAxis::labelsFont() const
              {
                  if (d_ptr->m_labelsFont == QChartPrivate::defaultFont())
                      return QFont();
                  else
                      return d_ptr->m_labelsFont;
              }
              void QAbstractAxis::setLabelsAngle(int angle)
              {
                  if (d_ptr->m_labelsAngle != angle) {
                      d_ptr->m_labelsAngle = angle;
                      emit labelsAngleChanged(angle);
                  }
              }
              int QAbstractAxis::labelsAngle() const
              {
                  return d_ptr->m_labelsAngle;
              }
              void QAbstractAxis::setLabelsColor(QColor color)
              {
-                 QBrush b = d_ptr->m_labelsBrush;
+                 QBrush b = labelsBrush();
                  if (b.color() != color) {
                      b.setColor(color);
                      setLabelsBrush(b);
                      emit labelsColorChanged(color);
                  }
              }
              QColor QAbstractAxis::labelsColor() const
              {
                  return labelsBrush().color();
              }
              void QAbstractAxis::setTitleVisible(bool visible)
              {
                  if (d_ptr->m_titleVisible != visible) {
                      d_ptr->m_titleVisible = visible;
                      emit titleVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::isTitleVisible() const
              {
                  return d_ptr->m_titleVisible;
              }
              /*!
                Sets \a brush used to draw title.
               */
              void QAbstractAxis::setTitleBrush(const QBrush &brush)
              {
                  if (d_ptr->m_titleBrush != brush) {
                      d_ptr->m_titleBrush = brush;
                      emit titleBrushChanged(brush);
                  }
              }
              /*!
                Returns brush used to draw title.
              */
              QBrush QAbstractAxis::titleBrush() const
              {
                  if (d_ptr->m_titleBrush == QChartPrivate::defaultBrush())
                      return QBrush();
                  else
                      return d_ptr->m_titleBrush;
              }
              /*!
                Sets \a font used to draw title.
              */
              void QAbstractAxis::setTitleFont(const QFont &font)
              {
                  if (d_ptr->m_titleFont != font) {
                      d_ptr->m_titleFont = font;
                      emit titleFontChanged(font);
                  }
              }
              /*!
                Returns font used to draw title.
              */
              QFont QAbstractAxis::titleFont() const
              {
                  if (d_ptr->m_titleFont == QChartPrivate::defaultFont())
                      return QFont();
                  else
                      return d_ptr->m_titleFont;
              }
              void QAbstractAxis::setTitleText(const QString &title)
              {
                  if (d_ptr->m_title != title) {
                      d_ptr->m_title = title;
                      emit titleTextChanged(title);
                  }
              }
              QString QAbstractAxis::titleText() const
              {
                  return d_ptr->m_title;
              }
              void QAbstractAxis::setShadesVisible(bool visible)
              {
                  if (d_ptr->m_shadesVisible != visible) {
                      d_ptr->m_shadesVisible = visible;
                      emit shadesVisibleChanged(visible);
                  }
              }
              bool QAbstractAxis::shadesVisible() const
              {
                  return d_ptr->m_shadesVisible;
              }
              /*!
                Sets \a pen used to draw shades.
              */
              void QAbstractAxis::setShadesPen(const QPen &pen)
              {
                  if (d_ptr->m_shadesPen != pen) {
                      d_ptr->m_shadesPen = pen;
                      emit shadesPenChanged(pen);
                  }
              }
              /*!
                Returns pen used to draw shades.
              */
              QPen QAbstractAxis::shadesPen() const
              {
                  if (d_ptr->m_shadesPen == QChartPrivate::defaultPen())
                      return QPen();
                  else
                      return d_ptr->m_shadesPen;
              }
              /*!
                Sets \a brush used to draw shades.
              */
              void QAbstractAxis::setShadesBrush(const QBrush &brush)
              {
                  if (d_ptr->m_shadesBrush != brush) {
                      d_ptr->m_shadesBrush = brush;
                      emit shadesBrushChanged(brush);
                  }
              }
              /*!
                 Returns brush used to draw shades.
              */
              QBrush QAbstractAxis::shadesBrush() const
              {
                  if (d_ptr->m_shadesBrush == QChartPrivate::defaultBrush())
                      return QBrush(Qt::SolidPattern);
                  else
                      return d_ptr->m_shadesBrush;
              }
              void QAbstractAxis::setShadesColor(QColor color)
              {
-                 QBrush b = d_ptr->m_shadesBrush;
+                 QBrush b = shadesBrush();
                  if (b.color() != color) {
                      b.setColor(color);
                      setShadesBrush(b);
                      emit shadesColorChanged(color);
                  }
              }
              QColor QAbstractAxis::shadesColor() const
              {
                  return shadesBrush().color();
              }
              void QAbstractAxis::setShadesBorderColor(QColor color)
              {
                  QPen p = d_ptr->m_shadesPen;
                  if (p.color() != color) {
                      p.setColor(color);
                      setShadesPen(p);
                      emit shadesColorChanged(color);
                  }
              }
              QColor QAbstractAxis::shadesBorderColor() const
              {
                  return shadesPen().color();
              }
              bool QAbstractAxis::isVisible() const
              {
                  return d_ptr->m_visible;
              }
              /*!
                Sets axis, shades, labels and grid lines visibility to \a visible.
              */
              void QAbstractAxis::setVisible(bool visible)
              {
                  if (d_ptr->m_visible != visible) {
                      d_ptr->m_visible = visible;
                      emit visibleChanged(visible);
                  }
              }
              /*!
                Sets axis, shades, labels and grid lines to be visible.
              */
              void QAbstractAxis::show()
              {
                  setVisible(true);
              }
              /*!
                Sets axis, shades, labels and grid lines to not be visible.
              */
              void QAbstractAxis::hide()
              {
                  setVisible(false);
              }
              /*!
                Sets the minimum value shown on the axis.
                Depending on the actual axis type the \a min parameter is converted to appropriate type.
                If the conversion is impossible then the function call does nothing
              */
              void QAbstractAxis::setMin(const QVariant &min)
              {
                  d_ptr->setMin(min);
              }
              /*!
                Sets the maximum value shown on the axis.
                Depending on the actual axis type the \a max parameter is converted to appropriate type.
                If the conversion is impossible then the function call does nothing
              */
              void QAbstractAxis::setMax(const QVariant &max)
              {
                  d_ptr->setMax(max);
              }
              /*!
                Sets the range shown on the axis.
                Depending on the actual axis type the \a min and \a max parameters are converted to appropriate types.
                If the conversion is impossible then the function call does nothing.
              */
              void QAbstractAxis::setRange(const QVariant &min, const QVariant &max)
              {
                  d_ptr->setRange(min, max);
              }
              /*!
                Returns the orientation in which the axis is being used (Vertical or Horizontal)
              */
              Qt::Orientation QAbstractAxis::orientation() const
              {
                  return d_ptr->orientation();
              }
              Qt::Alignment QAbstractAxis::alignment() const
              {
                  return d_ptr->alignment();
              }
              bool QAbstractAxis::isReverse() const
              {
                  return d_ptr->m_reverse;
              }
              void QAbstractAxis::setReverse(bool reverse)
              {
                  if (d_ptr->m_reverse != reverse && type() != QAbstractAxis::AxisTypeBarCategory) {
                      d_ptr->m_reverse = reverse;
                      emit reverseChanged(reverse);
                  }
              }
              /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
              QAbstractAxisPrivate::QAbstractAxisPrivate(QAbstractAxis *q)
                  : q_ptr(q),
                    m_chart(0),
                    m_alignment(0),
                    m_orientation(Qt::Orientation(0)),
                    m_visible(true),
                    m_arrowVisible(true),
                    m_axisPen(QChartPrivate::defaultPen()),
                    m_axisBrush(QChartPrivate::defaultBrush()),
                    m_gridLineVisible(true),
                    m_gridLinePen(QChartPrivate::defaultPen()),
                    m_minorGridLineVisible(true),
                    m_minorGridLinePen(QChartPrivate::defaultPen()),
                    m_labelsVisible(true),
                    m_labelsBrush(QChartPrivate::defaultBrush()),
                    m_labelsFont(QChartPrivate::defaultFont()),
                    m_labelsAngle(0),
                    m_titleVisible(true),
                    m_titleBrush(QChartPrivate::defaultBrush()),
                    m_titleFont(QChartPrivate::defaultFont()),
                    m_shadesVisible(false),
                    m_shadesPen(QChartPrivate::defaultPen()),
                    m_shadesBrush(QChartPrivate::defaultBrush()),
                    m_shadesOpacity(1.0),
                    m_dirty(false),
                    m_reverse(false)
              {
              }
              QAbstractAxisPrivate::~QAbstractAxisPrivate()
              {
              }
              void QAbstractAxisPrivate::setAlignment( Qt::Alignment alignment)
              {
                  switch(alignment) {
                      case Qt::AlignTop:
                      case Qt::AlignBottom:
                      m_orientation = Qt::Horizontal;
                      break;
                      case Qt::AlignLeft:
                      case Qt::AlignRight:
                      m_orientation = Qt::Vertical;
                      break;
                      default:
                      qWarning()<<"No alignment specified !";
                      break;
                  };
                  m_alignment=alignment;
              }
              void QAbstractAxisPrivate::initializeTheme(ChartTheme* theme, bool forced)
              {
                  if (forced || QChartPrivate::defaultPen() == m_axisPen)
                      q_ptr->setLinePen(theme->axisLinePen());
                  if (forced || QChartPrivate::defaultPen() == m_gridLinePen)
                      q_ptr->setGridLinePen(theme->gridLinePen());
                  if (forced || QChartPrivate::defaultPen() == m_minorGridLinePen)
                      q_ptr->setMinorGridLinePen(theme->minorGridLinePen());
                  if (forced || QChartPrivate::defaultBrush() == m_labelsBrush)
                      q_ptr->setLabelsBrush(theme->labelBrush());
                  if (forced || QChartPrivate::defaultFont() == m_labelsFont)
                      q_ptr->setLabelsFont(theme->labelFont());
                  if (forced || QChartPrivate::defaultBrush() == m_titleBrush)
                      q_ptr->setTitleBrush(theme->labelBrush());
                  if (forced || QChartPrivate::defaultFont() == m_titleFont) {
                      QFont font(m_labelsFont);
                      font.setBold(true);
                      q_ptr->setTitleFont(font);
                  }
                  if (forced || QChartPrivate::defaultBrush() == m_shadesBrush)
                      q_ptr->setShadesBrush(theme->backgroundShadesBrush());
                  if (forced || QChartPrivate::defaultPen() == m_shadesPen)
                      q_ptr->setShadesPen(theme->backgroundShadesPen());
                  bool axisX = m_orientation == Qt::Horizontal;
                  if (forced && (theme->backgroundShades() == ChartTheme::BackgroundShadesBoth
                          || (theme->backgroundShades() == ChartTheme::BackgroundShadesVertical && axisX)
                          || (theme->backgroundShades() == ChartTheme::BackgroundShadesHorizontal && !axisX))) {
                       q_ptr->setShadesVisible(true);
                  } else if (forced) {
                      q_ptr->setShadesVisible(false);
                  }
              }
              void QAbstractAxisPrivate::handleRangeChanged(qreal min, qreal max)
              {
                  setRange(min,max);
              }
              void QAbstractAxisPrivate::initializeGraphics(QGraphicsItem* parent)
              {
                  Q_UNUSED(parent);
              }
              void QAbstractAxisPrivate::initializeAnimations(QChart::AnimationOptions options, int duration,
                                                              QEasingCurve &curve)
              {
                  ChartAxisElement *axis = m_item.data();
                  Q_ASSERT(axis);
                  if (axis->animation())
                      axis->animation()->stopAndDestroyLater();
                  if (options.testFlag(QChart::GridAxisAnimations))
                      axis->setAnimation(new AxisAnimation(axis, duration, curve));
                  else
                      axis->setAnimation(0);
              }
              #include "moc_qabstractaxis.cpp"
              #include "moc_qabstractaxis_p.cpp"
              QT_CHARTS_END_NAMESPACE

src/charts/legend/qlegend.cpp +18 -9

              /******************************************************************************
              **
              ** Copyright (C) 2015 The Qt Company Ltd.
              ** Contact: http://www.qt.io/licensing/
              **
              ** This file is part of the Qt Charts module.
              **
              ** $QT_BEGIN_LICENSE:COMM$
              **
              ** Commercial License Usage
              ** Licensees holding valid commercial Qt licenses may use this file in
              ** accordance with the commercial license agreement provided with the
              ** Software or, alternatively, in accordance with the terms contained in
              ** a written agreement between you and The Qt Company. For licensing terms
              ** and conditions see http://www.qt.io/terms-conditions. For further
              ** information use the contact form at http://www.qt.io/contact-us.
              **
              ** $QT_END_LICENSE$
              **
              ******************************************************************************/
              #include <QtCharts/QLegend>
              #include <private/qlegend_p.h>
              #include <QtCharts/QAbstractSeries>
              #include <private/qabstractseries_p.h>
              #include <private/qchart_p.h>
              #include <private/legendlayout_p.h>
              #include <private/chartpresenter_p.h>
              #include <private/abstractchartlayout_p.h>
              #include <QtCharts/QLegendMarker>
              #include <private/qlegendmarker_p.h>
              #include <private/legendmarkeritem_p.h>
              #include <private/chartdataset_p.h>
              #include <QtGui/QPainter>
              #include <QtGui/QPen>
              #include <QtWidgets/QGraphicsItemGroup>
              QT_CHARTS_BEGIN_NAMESPACE
              /*!
                  \class QLegend
                  \inmodule Qt Charts
                  \inherits QGraphicsWidget
                  \brief Legend object.
                  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
              */
              /*!
                  \qmltype Legend
                  \instantiates QLegend
                  \inqmlmodule QtCharts
                  \brief Legend is part of Qt Chart QML API.
                  Legend is a graphical object, which 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 {qmlcustomlegend}{Qml Custom Example} 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.
              */
              /*!
                  \qmlproperty bool Legend::visible
                  \brief Whether the legend is visible or not.
                  By default, this property is \c true.
                  \sa QGraphicsObject::visible
              */
              /*!
                  \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 Legend::labelColor
                  The color of brush used to draw labels.
              */
              /*!
                  \property QLegend::reverseMarkers
                  Whether reverse order is used for the markers in legend or not. False by default.
              */
              /*!
                  \qmlproperty bool Legend::reverseMarkers
                  Whether reverse order is used for the markers in legend or not. False by default.
              */
              /*!
                  \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.
              */
              /*!
                  \fn void QLegend::reverseMarkersChanged(bool)
                  The use of reverse order for the markers in legend is changed to \a reverseMarkers.
              */
              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;
+                 if (d_ptr->m_brush == QChartPrivate::defaultBrush())
+                     return QBrush();
+                 else
+                     return d_ptr->m_brush;
              }
              void QLegend::setColor(QColor color)
              {
-                 QBrush b = d_ptr->m_brush;
+                 QBrush b = 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;
+                 if (d_ptr->m_pen == QChartPrivate::defaultPen())
+                     return QPen();
+                 else
+                     return d_ptr->m_pen;
              }
              void QLegend::setFont(const QFont &font)
              {
                  if (d_ptr->m_font != font) {
                      // Hide items to avoid flickering
                      d_ptr->items()->setVisible(false);
                      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;
+                 QPen p = 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;
+                 if (d_ptr->m_labelBrush == QChartPrivate::defaultBrush())
+                     return QBrush();
+                 else
+                     return d_ptr->m_labelBrush;
              }
              void QLegend::setLabelColor(QColor color)
              {
-                 QBrush b = d_ptr->m_labelBrush;
+                 QBrush b = 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);
              }
              bool QLegend::reverseMarkers()
              {
                  return d_ptr->m_reverseMarkers;
              }
              void QLegend::setReverseMarkers(bool reverseMarkers)
              {
                  if (d_ptr->m_reverseMarkers != reverseMarkers) {
                      d_ptr->m_reverseMarkers = reverseMarkers;
                      layout()->invalidate();
                      emit reverseMarkersChanged(reverseMarkers);
                  }
              }
              /*!
               \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_brush(QChartPrivate::defaultBrush()),
+                   m_pen(QChartPrivate::defaultPen()),
+                   m_labelBrush(QChartPrivate::defaultBrush()),
                    m_diameter(5),
                    m_attachedToChart(true),
                    m_backgroundVisible(false),
                    m_reverseMarkers(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());
                      }
                  }
                  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"
              QT_CHARTS_END_NAMESPACE

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