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Diffstat (limited to 'src/legend/qlegend.cpp')
| -rw-r--r-- | src/legend/qlegend.cpp | 623 |
1 files changed, 0 insertions, 623 deletions
diff --git a/src/legend/qlegend.cpp b/src/legend/qlegend.cpp deleted file mode 100644 index 310003f4..00000000 --- a/src/legend/qlegend.cpp +++ /dev/null @@ -1,623 +0,0 @@ -/**************************************************************************** - ** - ** Copyright (C) 2014 Digia Plc - ** All rights reserved. - ** For any questions to Digia, please use contact form at http://qt.digia.com - ** - ** This file is part of the Qt Enterprise Charts Add-on. - ** - ** $QT_BEGIN_LICENSE$ - ** Licensees holding valid Qt Enterprise licenses may use this file in - ** accordance with the Qt Enterprise License Agreement provided with the - ** Software or, alternatively, in accordance with the terms contained in - ** a written agreement between you and Digia. - ** - ** If you have questions regarding the use of this file, please use - ** contact form at http://qt.digia.com - ** $QT_END_LICENSE$ - ** - ****************************************************************************/ - -#include "qlegend.h" -#include "qlegend_p.h" -#include "qabstractseries.h" -#include "qabstractseries_p.h" -#include "qchart_p.h" -#include "legendlayout_p.h" -#include "chartpresenter_p.h" -#include "abstractchartlayout_p.h" -#include "qlegendmarker.h" -#include "qlegendmarker_p.h" -#include "legendmarkeritem_p.h" -#include "chartdataset_p.h" -#include <QPainter> -#include <QPen> -#include <QGraphicsItemGroup> - -QTCOMMERCIALCHART_BEGIN_NAMESPACE - -/*! - \class QLegend - \inmodule Qt Charts - \brief Legend object. - \mainclass - - QLegend is a graphical object for displaying the legend of the chart. Legend state is updated by QChart, when - series have been changed. By default, legend is drawn by QChart, but user can set a new parent to legend and - handle the drawing manually. - User isn't supposed to create or delete legend objects, but can reference it via QChart class. - - \image examples_percentbarchart_legend.png - - \sa QChart -*/ -#ifdef QDOC_QT5 -/*! - \qmltype Legend - \instantiates QLegend - \inqmlmodule QtCommercial.Chart - - \include doc/src/legend.qdocinc -*/ -#else -/*! - \qmlclass Legend QLegend - - \include ../doc/src/legend.qdocinc -*/ -#endif - -/*! - \property QLegend::alignment - \brief The alignment of the legend. - - Legend paints on the defined position in the chart. The following alignments are supported: - Qt::AlignTop, Qt::AlignBottom, Qt::AlignLeft, Qt::AlignRight. If you set more than one flag the result is undefined. -*/ -/*! - \qmlproperty Qt.Alignment Legend::alignment - \brief The alignment of the legend. - - Legend paints on the defined position in the chart. The following alignments are supported: - Qt.AlignTop, Qt.AlignBottom, Qt.AlignLeft, Qt.AlignRight. If you set more than one flag the result is undefined. -*/ - -/*! - \property QLegend::backgroundVisible - Whether the legend background is visible or not. -*/ -/*! - \qmlproperty bool Legend::backgroundVisible - Whether the legend background is visible or not. -*/ - -/*! - \property QLegend::color - The color of the legend, i.e. the background (brush) color. Note that if you change the color - of the legend, the style of the legend brush is set to Qt::SolidPattern. -*/ -/*! - \qmlproperty color Legend::color - The color of the legend, i.e. the background (brush) color. -*/ - -/*! - \property QLegend::borderColor - The border color of the legend, i.e. the line color. -*/ -/*! - \qmlproperty color Legend::borderColor - The border color of the legend, i.e. the line color. -*/ - -/*! - \property QLegend::font - The font of markers used by legend. -*/ -/*! - \qmlproperty Font Legend::font - The font of markers used by legend. -*/ - -/*! - \property QLegend::labelColor - The color of brush used to draw labels. -*/ -/*! - \qmlproperty color 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; -} - -void QLegend::setColor(QColor color) -{ - QBrush b = d_ptr->m_brush; - if (b.style() != Qt::SolidPattern || b.color() != color) { - b.setStyle(Qt::SolidPattern); - b.setColor(color); - setBrush(b); - } -} - -QColor QLegend::color() -{ - return d_ptr->m_brush.color(); -} - -/*! - Sets the \a pen of legend. Pen affects the legend borders. - */ -void QLegend::setPen(const QPen &pen) -{ - if (d_ptr->m_pen != pen) { - d_ptr->m_pen = pen; - update(); - emit borderColorChanged(pen.color()); - } -} - -/*! - Returns the pen used by legend. - */ - -QPen QLegend::pen() const -{ - return d_ptr->m_pen; -} - -void QLegend::setFont(const QFont &font) -{ - if (d_ptr->m_font != font) { - // 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; - if (p.color() != color) { - p.setColor(color); - setPen(p); - } -} - -QColor QLegend::borderColor() -{ - return d_ptr->m_pen.color(); -} - -/*! - Set brush used to draw labels to \a brush. -*/ -void QLegend::setLabelBrush(const QBrush &brush) -{ - if (d_ptr->m_labelBrush != brush) { - d_ptr->m_labelBrush = brush; - foreach (QLegendMarker *marker, d_ptr->markers()) { - marker->setLabelBrush(d_ptr->m_labelBrush); - // Note: The pen of the marker rectangle could be exposed in the public QLegend API - // instead of mapping it from label brush color - marker->setPen(brush.color()); - } - emit labelColorChanged(brush.color()); - } -} - -/*! - Brush used to draw labels. -*/ -QBrush QLegend::labelBrush() const -{ - return d_ptr->m_labelBrush; -} - -void QLegend::setLabelColor(QColor color) -{ - QBrush b = d_ptr->m_labelBrush; - if (b.style() != Qt::SolidPattern || b.color() != color) { - b.setStyle(Qt::SolidPattern); - b.setColor(color); - setLabelBrush(b); - } -} - -QColor QLegend::labelColor() const -{ - return d_ptr->m_labelBrush.color(); -} - - -void QLegend::setAlignment(Qt::Alignment alignment) -{ - if (d_ptr->m_alignment != alignment) { - d_ptr->m_alignment = alignment; - layout()->invalidate(); - } -} - -Qt::Alignment QLegend::alignment() const -{ - return d_ptr->m_alignment; -} - -/*! - Detaches the legend from chart. Chart won't change layout of the legend. - */ -void QLegend::detachFromChart() -{ - d_ptr->m_attachedToChart = false; -// layout()->invalidate(); - d_ptr->m_chart->layout()->invalidate(); - setParent(0); - -} - -/*! - Attaches the legend to chart. Chart may change layout of the legend. - */ -void QLegend::attachToChart() -{ - d_ptr->m_attachedToChart = true; -// layout()->invalidate(); - d_ptr->m_chart->layout()->invalidate(); - setParent(d_ptr->m_chart); -} - -/*! - Returns true, if legend is attached to chart. - */ -bool QLegend::isAttachedToChart() -{ - return d_ptr->m_attachedToChart; -} - -/*! - Sets the visibility of legend background to \a visible - */ -void QLegend::setBackgroundVisible(bool visible) -{ - if (d_ptr->m_backgroundVisible != visible) { - d_ptr->m_backgroundVisible = visible; - update(); - emit backgroundVisibleChanged(visible); - } -} - -/*! - Returns the visibility of legend background - */ -bool QLegend::isBackgroundVisible() const -{ - return d_ptr->m_backgroundVisible; -} - -/*! - Returns the list of markers in legend. The list can be filtered with \a series parameter. - If \a series is given, only markers related to that series are returned. -*/ -QList<QLegendMarker*> QLegend::markers(QAbstractSeries *series) const -{ - return d_ptr->markers(series); -} - -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_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" - -QTCOMMERCIALCHART_END_NAMESPACE |