qlegend.cpp
594 lines
| 15.5 KiB
| text/x-c
|
CppLexer
Jani Honkonen
|
r794 | /**************************************************************************** | ||
Michal Klocek
|
r950 | ** | ||
| ** Copyright (C) 2012 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
| ** This file is part of the Qt Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial License Agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
Jani Honkonen
|
r794 | |||
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r524 | #include "qlegend.h" | ||
|
Michal Klocek
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r950 | #include "qlegend_p.h" | ||
Tero Ahola
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r988 | #include "qabstractseries.h" | ||
| #include "qabstractseries_p.h" | ||||
|
Michal Klocek
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r950 | #include "qchart_p.h" | ||
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r1534 | #include "legendlayout_p.h" | ||
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r626 | #include "chartpresenter_p.h" | ||
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r2105 | #include "chartlayout_p.h" | ||
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r2182 | #include "qlegendmarker.h" | ||
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r2167 | #include "qlegendmarker_p.h" | ||
| #include "legendmarkeritem_p.h" | ||||
|
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r2273 | #include "chartdataset_p.h" | ||
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r2193 | #include <QPainter> | ||
| #include <QPen> | ||||
| #include <QGraphicsItemGroup> | ||||
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r2163 | |||
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r547 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
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r529 | |||
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r728 | /*! | ||
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Tero Ahola
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r995 | \class QLegend | ||
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r1501 | \brief Legend object | ||
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r995 | \mainclass | ||
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r728 | |||
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Tero Ahola
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r995 | QLegend is a graphical object, whics displays 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. | ||||
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r728 | |||
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Tero Ahola
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r995 | \image examples_percentbarchart_legend.png | ||
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r728 | |||
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Tero Ahola
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r995 | \sa QChart | ||
| */ | ||||
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Tero Ahola
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r1452 | /*! | ||
| \qmlclass Legend QLegend | ||||
| \brief Legend is part of QtCommercial Chart QML API. | ||||
| Legend is a graphical object, whics displays legend of the chart. Legend state is updated by ChartView, when | ||||
|
Tero Ahola
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r1475 | series have been changed. Legend is used via ChartView class. For example: | ||
|
Tero Ahola
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r1452 | \code | ||
| ChartView { | ||||
| legend.visible: true | ||||
| legend.alignment: Qt.AlignBottom | ||||
| // Add a few series... | ||||
| } | ||||
| \endcode | ||||
| \image examples_percentbarchart_legend.png | ||||
|
Tero Ahola
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r2240 | |||
| 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. | ||||
|
Tero Ahola
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r1452 | */ | ||
| /*! | ||||
| \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 | ||||
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Tero Ahola
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r1472 | 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. | ||||
|
Tero Ahola
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r1452 | */ | ||
| /*! | ||||
| \qmlproperty color Legend::color | ||||
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Tero Ahola
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r1472 | The color of the legend, i.e. the background (brush) color. | ||
|
Tero Ahola
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r1452 | */ | ||
| /*! | ||||
| \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. | ||||
| */ | ||||
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r728 | |||
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r1522 | /*! | ||
| \property QLegend::font | ||||
| The font of markers used by legend | ||||
| */ | ||||
| /*! | ||||
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Tero Ahola
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r2113 | \qmlproperty Font Legend::font | ||
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r1522 | The font of markers used by legend | ||
| */ | ||||
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Tero Ahola
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r1529 | /*! | ||
| \property QLegend::labelColor | ||||
| The color of brush used to draw labels. | ||||
| */ | ||||
| /*! | ||||
| \qmlproperty color QLegend::labelColor | ||||
| The color of brush used to draw labels. | ||||
| */ | ||||
|
Tero Ahola
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r1452 | /*! | ||
| \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. | ||||
|
Tero Ahola
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r1357 | */ | ||
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r724 | |||
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r1522 | /*! | ||
| \fn void QLegend::fontChanged(QFont) | ||||
| The font of markers of the legend changed to \a font. | ||||
| */ | ||||
|
Tero Ahola
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r1529 | /*! | ||
| \fn void QLegend::labelColorChanged(QColor color) | ||||
| This signal is emitted when the color of brush used to draw labels has changed to \a color. | ||||
| */ | ||||
|
Jani Honkonen
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r2097 | QLegend::QLegend(QChart *chart): QGraphicsWidget(chart), | ||
| d_ptr(new QLegendPrivate(chart->d_ptr->m_presenter, chart, this)) | ||||
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r762 | { | ||
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r626 | setZValue(ChartPresenter::LegendZValue); | ||
|
Michal Klocek
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r855 | setFlags(QGraphicsItem::ItemClipsChildrenToShape); | ||
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Michal Klocek
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r2273 | QObject::connect(chart->d_ptr->m_dataset, SIGNAL(seriesAdded(QAbstractSeries*)), d_ptr.data(), SLOT(handleSeriesAdded(QAbstractSeries*))); | ||
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Jani Honkonen
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r2131 | QObject::connect(chart->d_ptr->m_dataset, SIGNAL(seriesRemoved(QAbstractSeries*)), d_ptr.data(), SLOT(handleSeriesRemoved(QAbstractSeries*))); | ||
|
Michal Klocek
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r1534 | setLayout(d_ptr->m_layout); | ||
|
Michal Klocek
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r950 | } | ||
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Tero Ahola
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r1002 | /*! | ||
| Destroys the legend object. Legend is always owned by a QChart, so an application should never call this. | ||||
| */ | ||||
|
Michal Klocek
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r950 | QLegend::~QLegend() | ||
| { | ||||
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r524 | } | ||
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r724 | /*! | ||
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r1501 | \internal | ||
|
Michal Klocek
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r950 | */ | ||
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r524 | void QLegend::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||
| { | ||||
|
Michal Klocek
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r950 | Q_UNUSED(option) | ||
| Q_UNUSED(widget) | ||||
|
Michal Klocek
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r1963 | |||
|
Jani Honkonen
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r2097 | if (!d_ptr->m_backgroundVisible) | ||
| return; | ||||
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Tero Ahola
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r611 | |||
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r724 | painter->setOpacity(opacity()); | ||
|
Michal Klocek
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r950 | painter->setPen(d_ptr->m_pen); | ||
| painter->setBrush(d_ptr->m_brush); | ||||
|
Jani Honkonen
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r2097 | painter->drawRoundRect(rect(), d_ptr->roundness(rect().width()), d_ptr->roundness(rect().height())); | ||
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sauimone
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r524 | } | ||
|
Michal Klocek
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r1534 | |||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Sets the \a brush of legend. Brush affects the background of legend. | ||
| */ | ||||
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Tero Ahola
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r737 | void QLegend::setBrush(const QBrush &brush) | ||
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sauimone
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r540 | { | ||
|
Michal Klocek
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r950 | if (d_ptr->m_brush != brush) { | ||
| d_ptr->m_brush = brush; | ||||
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Michal Klocek
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r645 | update(); | ||
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Tero Ahola
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r1543 | emit colorChanged(brush.color()); | ||
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Michal Klocek
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r645 | } | ||
| } | ||||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Returns the brush used by legend. | ||
| */ | ||||
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Michal Klocek
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r645 | QBrush QLegend::brush() const | ||
| { | ||||
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Michal Klocek
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r950 | return d_ptr->m_brush; | ||
|
Michal Klocek
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r645 | } | ||
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Tero Ahola
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r1452 | void QLegend::setColor(QColor color) | ||
| { | ||||
| QBrush b = d_ptr->m_brush; | ||||
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Tero Ahola
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r1472 | if (b.style() != Qt::SolidPattern || b.color() != color) { | ||
| b.setStyle(Qt::SolidPattern); | ||||
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Tero Ahola
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r1452 | b.setColor(color); | ||
| setBrush(b); | ||||
| } | ||||
| } | ||||
| QColor QLegend::color() | ||||
| { | ||||
| return d_ptr->m_brush.color(); | ||||
| } | ||||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Sets the \a pen of legend. Pen affects the legend borders. | ||
| */ | ||||
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Tero Ahola
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r737 | void QLegend::setPen(const QPen &pen) | ||
|
Michal Klocek
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r645 | { | ||
|
Michal Klocek
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r950 | if (d_ptr->m_pen != pen) { | ||
| d_ptr->m_pen = pen; | ||||
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Michal Klocek
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r645 | update(); | ||
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Tero Ahola
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r1543 | emit borderColorChanged(pen.color()); | ||
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Michal Klocek
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r645 | } | ||
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r540 | } | ||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Returns the pen used by legend | ||
| */ | ||||
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r724 | |||
|
Michal Klocek
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r645 | QPen QLegend::pen() const | ||
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r540 | { | ||
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Michal Klocek
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r950 | return d_ptr->m_pen; | ||
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r540 | } | ||
|
Michal Klocek
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r1534 | void QLegend::setFont(const QFont &font) | ||
| { | ||||
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Michal Klocek
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r2273 | if (d_ptr->m_font != font) { | ||
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Michal Klocek
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r1534 | d_ptr->m_font = font; | ||
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Michal Klocek
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r2273 | foreach (QLegendMarker *marker, d_ptr->markers()) { | ||
| marker->setFont(d_ptr->m_font); | ||||
| } | ||||
| layout()->invalidate(); | ||||
| emit fontChanged(font); | ||||
|
Michal Klocek
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r1534 | } | ||
| } | ||||
| QFont QLegend::font() const | ||||
| { | ||||
|
Jani Honkonen
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r2097 | return d_ptr->m_font; | ||
|
Michal Klocek
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r1534 | } | ||
|
Tero Ahola
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r1452 | void QLegend::setBorderColor(QColor color) | ||
| { | ||||
| QPen p = d_ptr->m_pen; | ||||
| if (p.color() != color) { | ||||
| p.setColor(color); | ||||
| setPen(p); | ||||
| } | ||||
| } | ||||
|
Tero Ahola
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r1357 | |||
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Tero Ahola
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r1452 | QColor QLegend::borderColor() | ||
| { | ||||
| return d_ptr->m_pen.color(); | ||||
| } | ||||
|
Tero Ahola
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r1357 | |||
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Tero Ahola
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r1529 | /*! | ||
| Set brush used to draw labels to \a brush. | ||||
| */ | ||||
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sauimone
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r1527 | void QLegend::setLabelBrush(const QBrush &brush) | ||
| { | ||||
| if (d_ptr->m_labelBrush != brush) { | ||||
|
Michal Klocek
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r1534 | d_ptr->m_labelBrush = brush; | ||
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r2185 | foreach (QLegendMarker *marker, d_ptr->markers()) { | ||
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Michal Klocek
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r1534 | marker->setLabelBrush(d_ptr->m_labelBrush); | ||
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Tero Ahola
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r1795 | // 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()); | ||||
|
Michal Klocek
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r1534 | } | ||
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Tero Ahola
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r1543 | emit labelColorChanged(brush.color()); | ||
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sauimone
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r1527 | } | ||
| } | ||||
|
Tero Ahola
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r1529 | /*! | ||
| Brush used to draw labels. | ||||
| */ | ||||
|
sauimone
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r1527 | 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(); | ||||
| } | ||||
|
Michal Klocek
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r1534 | |||
|
Tero Ahola
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r1357 | void QLegend::setAlignment(Qt::Alignment alignment) | ||
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sauimone
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r616 | { | ||
|
Jani Honkonen
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r2097 | if (d_ptr->m_alignment != alignment) { | ||
|
Michal Klocek
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r950 | d_ptr->m_alignment = alignment; | ||
|
Michal Klocek
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r2088 | layout()->invalidate(); | ||
|
Michal Klocek
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r855 | } | ||
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sauimone
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r716 | } | ||
|
Tero Ahola
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r1357 | Qt::Alignment QLegend::alignment() const | ||
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sauimone
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r716 | { | ||
|
Michal Klocek
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r950 | return d_ptr->m_alignment; | ||
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sauimone
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r616 | } | ||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Detaches the legend from chart. Chart won't change layout of the legend. | ||
| */ | ||||
| void QLegend::detachFromChart() | ||||
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sauimone
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r524 | { | ||
|
Michal Klocek
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r950 | d_ptr->m_attachedToChart = false; | ||
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r2088 | layout()->invalidate(); | ||
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Michal Klocek
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r1534 | setParent(0); | ||
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sauimone
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r586 | } | ||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Attaches the legend to chart. Chart may change layout of the legend. | ||
| */ | ||||
| void QLegend::attachToChart() | ||||
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sauimone
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r586 | { | ||
|
Michal Klocek
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r1534 | d_ptr->m_attachedToChart = true; | ||
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Michal Klocek
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r2088 | layout()->invalidate(); | ||
|
Michal Klocek
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r1534 | setParent(d_ptr->m_chart); | ||
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sauimone
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r586 | } | ||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | Returns true, if legend is attached to chart. | ||
| */ | ||||
| bool QLegend::isAttachedToChart() | ||||
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sauimone
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r637 | { | ||
|
Michal Klocek
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r950 | return d_ptr->m_attachedToChart; | ||
|
sauimone
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r637 | } | ||
|
sauimone
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r799 | /*! | ||
|
Michal Klocek
|
r950 | Sets the visibility of legend background to \a visible | ||
| */ | ||||
| void QLegend::setBackgroundVisible(bool visible) | ||||
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sauimone
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r799 | { | ||
|
Jani Honkonen
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r2097 | if (d_ptr->m_backgroundVisible != visible) { | ||
|
Tero Ahola
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r1452 | d_ptr->m_backgroundVisible = visible; | ||
|
Michal Klocek
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r950 | update(); | ||
|
Tero Ahola
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r1452 | emit backgroundVisibleChanged(visible); | ||
|
Michal Klocek
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r950 | } | ||
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sauimone
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r799 | } | ||
| /*! | ||||
|
Michal Klocek
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r950 | Returns the visibility of legend background | ||
| */ | ||||
| bool QLegend::isBackgroundVisible() const | ||||
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sauimone
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r799 | { | ||
|
Michal Klocek
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r950 | return d_ptr->m_backgroundVisible; | ||
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sauimone
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r799 | } | ||
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sauimone
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r2216 | /*! | ||
| 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. | ||||
| */ | ||||
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sauimone
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r2193 | QList<QLegendMarker*> QLegend::markers(QAbstractSeries *series) const | ||
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sauimone
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r2160 | { | ||
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sauimone
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r2193 | return d_ptr->markers(series); | ||
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sauimone
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r2160 | } | ||
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sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | \internal \a event see QGraphicsWidget for details | ||
| */ | ||||
| void QLegend::hideEvent(QHideEvent *event) | ||||
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sauimone
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r529 | { | ||
|
Jani Honkonen
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r2097 | if (isAttachedToChart()) | ||
| d_ptr->m_presenter->layout()->invalidate(); | ||||
| QGraphicsWidget::hideEvent(event); | ||||
|
sauimone
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r565 | } | ||
|
sauimone
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r724 | /*! | ||
|
Michal Klocek
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r950 | \internal \a event see QGraphicsWidget for details | ||
| */ | ||||
| void QLegend::showEvent(QShowEvent *event) | ||||
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sauimone
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r565 | { | ||
|
Jani Honkonen
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r2097 | if (isAttachedToChart()) { | ||
| d_ptr->items()->setVisible(false); | ||||
| layout()->invalidate(); | ||||
| } | ||||
| QGraphicsWidget::showEvent(event); | ||||
| //layout activation will show the items | ||||
|
Michal Klocek
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r950 | } | ||
|
Michal Klocek
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r855 | |||
|
Michal Klocek
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r950 | //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
|
Jani Honkonen
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r2104 | QLegendPrivate::QLegendPrivate(ChartPresenter *presenter, QChart *chart, QLegend *q) | ||
|
Jani Honkonen
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r2097 | : 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) | ||||
|
Michal Klocek
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r950 | { | ||
|
sauimone
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r2169 | m_items->setHandlesChildEvents(false); | ||
|
sauimone
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r586 | } | ||
|
Michal Klocek
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r950 | QLegendPrivate::~QLegendPrivate() | ||
| { | ||||
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sauimone
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r529 | |||
|
Michal Klocek
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r950 | } | ||
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sauimone
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r2189 | void QLegendPrivate::setOffset(const QPointF &offset) | ||
|
Michal Klocek
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r855 | { | ||
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sauimone
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r2189 | m_layout->setOffset(offset.x(), offset.y()); | ||
|
Michal Klocek
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r855 | } | ||
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sauimone
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r716 | |||
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sauimone
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r1458 | QPointF QLegendPrivate::offset() const | ||
| { | ||||
|
Michal Klocek
|
r1534 | return m_layout->offset(); | ||
|
sauimone
|
r1300 | } | ||
|
sauimone
|
r1453 | int QLegendPrivate::roundness(qreal size) | ||
| { | ||||
|
Jani Honkonen
|
r2097 | return 100 * m_diameter / int(size); | ||
|
sauimone
|
r1453 | } | ||
|
sauimone
|
r2193 | 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; | ||||
| } | ||||
|
sauimone
|
r2209 | void QLegendPrivate::handleSeriesAdded(QAbstractSeries *series) | ||
|
sauimone
|
r2167 | { | ||
| if (m_series.contains(series)) { | ||||
|
sauimone
|
r2173 | return; | ||
|
sauimone
|
r2167 | } | ||
|
sauimone
|
r2164 | |||
|
sauimone
|
r2163 | QList<QLegendMarker*> newMarkers = series->d_ptr->createLegendMarkers(q_ptr); | ||
|
sauimone
|
r2182 | decorateMarkers(newMarkers); | ||
| addMarkers(newMarkers); | ||||
|
sauimone
|
r2163 | |||
|
sauimone
|
r2192 | QObject::connect(series->d_ptr.data(), SIGNAL(countChanged()), this, SLOT(handleCountChanged())); | ||
|
sauimone
|
r2163 | QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleSeriesVisibleChanged())); | ||
|
Michal Klocek
|
r956 | |||
|
sauimone
|
r2173 | m_series.append(series); | ||
|
Michal Klocek
|
r2085 | m_items->setVisible(false); | ||
|
Michal Klocek
|
r2088 | m_layout->invalidate(); | ||
|
sauimone
|
r716 | } | ||
|
sauimone
|
r2209 | void QLegendPrivate::handleSeriesRemoved(QAbstractSeries *series) | ||
|
sauimone
|
r716 | { | ||
|
sauimone
|
r2173 | if (m_series.contains(series)) { | ||
| m_series.removeOne(series); | ||||
| } | ||||
|
sauimone
|
r2171 | |||
|
sauimone
|
r2182 | // Find out, which markers to remove | ||
| QList<QLegendMarker *> removed; | ||||
|
sauimone
|
r2185 | foreach (QLegendMarker *m, m_markers) { | ||
|
sauimone
|
r2182 | if (m->series() == series) { | ||
| removed << m; | ||||
|
sauimone
|
r2163 | } | ||
| } | ||||
|
sauimone
|
r2182 | removeMarkers(removed); | ||
|
sauimone
|
r2163 | |||
|
sauimone
|
r2192 | QObject::disconnect(series->d_ptr.data(), SIGNAL(countChanged()), this, SLOT(handleCountChanged())); | ||
|
sauimone
|
r2163 | QObject::disconnect(series, SIGNAL(visibleChanged()), this, SLOT(handleSeriesVisibleChanged())); | ||
|
Michal Klocek
|
r2088 | m_layout->invalidate(); | ||
|
sauimone
|
r2173 | } | ||
|
sauimone
|
r1459 | void QLegendPrivate::handleSeriesVisibleChanged() | ||
| { | ||||
|
Jani Honkonen
|
r2104 | QAbstractSeries *series = qobject_cast<QAbstractSeries *> (sender()); | ||
|
Michal Klocek
|
r2085 | Q_ASSERT(series); | ||
|
sauimone
|
r1459 | |||
|
sauimone
|
r2193 | foreach (QLegendMarker *marker, m_markers) { | ||
|
sauimone
|
r2163 | if (marker->series() == series) { | ||
| marker->setVisible(series->isVisible()); | ||||
| } | ||||
| } | ||||
|
Michal Klocek
|
r2088 | m_layout->invalidate(); | ||
|
sauimone
|
r1459 | } | ||
|
Michal Klocek
|
r2085 | void QLegendPrivate::handleCountChanged() | ||
|
sauimone
|
r2081 | { | ||
|
sauimone
|
r2182 | // Here we handle the changes in marker count. | ||
| // Can happen for example when pieslice(s) have been added to or removed from pieseries. | ||||
|
sauimone
|
r2173 | |||
|
sauimone
|
r2192 | QAbstractSeriesPrivate *series = qobject_cast<QAbstractSeriesPrivate *> (sender()); | ||
| QList<QLegendMarker *> createdMarkers = series->createLegendMarkers(q_ptr); | ||||
|
sauimone
|
r2182 | |||
| // Find out removed markers and created markers | ||||
| QList<QLegendMarker *> removedMarkers; | ||||
|
sauimone
|
r2185 | foreach (QLegendMarker *oldMarker, m_markers) { | ||
|
sauimone
|
r2182 | // we have marker, which is related to sender. | ||
|
sauimone
|
r2192 | if (oldMarker->series() == series->q_ptr) { | ||
|
sauimone
|
r2182 | 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); | ||||
|
sauimone
|
r2183 | decorateMarkers(createdMarkers); | ||
|
sauimone
|
r2182 | addMarkers(createdMarkers); | ||
| q_ptr->layout()->invalidate(); | ||||
| } | ||||
| void QLegendPrivate::addMarkers(QList<QLegendMarker *> markers) | ||||
| { | ||||
|
sauimone
|
r2193 | foreach (QLegendMarker *marker, markers) { | ||
|
sauimone
|
r2182 | m_items->addToGroup(marker->d_ptr.data()->item()); | ||
|
sauimone
|
r2185 | m_markers << marker; | ||
|
sauimone
|
r2197 | m_markerHash.insert(marker->d_ptr->item(), marker); | ||
|
sauimone
|
r2182 | } | ||
| } | ||||
| void QLegendPrivate::removeMarkers(QList<QLegendMarker *> markers) | ||||
| { | ||||
| foreach (QLegendMarker *marker, markers) { | ||||
| marker->d_ptr->item()->setVisible(false); | ||||
| m_items->removeFromGroup(marker->d_ptr->item()); | ||||
|
sauimone
|
r2185 | m_markers.removeOne(marker); | ||
|
sauimone
|
r2197 | m_markerHash.remove(marker->d_ptr->item()); | ||
| delete marker; | ||||
|
sauimone
|
r2182 | } | ||
| } | ||||
| void QLegendPrivate::decorateMarkers(QList<QLegendMarker *> markers) | ||||
| { | ||||
|
sauimone
|
r2193 | foreach (QLegendMarker *marker, markers) { | ||
|
sauimone
|
r2182 | marker->setFont(m_font); | ||
| marker->setLabelBrush(m_labelBrush); | ||||
| } | ||||
|
sauimone
|
r2081 | } | ||
|
sauimone
|
r2182 | |||
|
sauimone
|
r524 | #include "moc_qlegend.cpp" | ||
|
Michal Klocek
|
r950 | #include "moc_qlegend_p.cpp" | ||
|
Tero Ahola
|
r737 | |||
|
sauimone
|
r524 | QTCOMMERCIALCHART_END_NAMESPACE | ||