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Diffstat (limited to 'src/charts/piechart/piechartitem.cpp')
| -rw-r--r-- | src/charts/piechart/piechartitem.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/charts/piechart/piechartitem.cpp b/src/charts/piechart/piechartitem.cpp new file mode 100644 index 00000000..dbf7edf8 --- /dev/null +++ b/src/charts/piechart/piechartitem.cpp @@ -0,0 +1,228 @@ +/**************************************************************************** +** +** 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 "piechartitem_p.h" +#include "piesliceitem_p.h" +#include "qpieslice.h" +#include "qpieslice_p.h" +#include "qpieseries.h" +#include "qpieseries_p.h" +#include "chartpresenter_p.h" +#include "chartdataset_p.h" +#include "pieanimation_p.h" +#include <QPainter> +#include <QTimer> + +QT_CHARTS_BEGIN_NAMESPACE + +PieChartItem::PieChartItem(QPieSeries *series, QGraphicsItem* item) + : ChartItem(series->d_func(),item), + m_series(series), + m_animation(0) +{ + Q_ASSERT(series); + + QPieSeriesPrivate *p = QPieSeriesPrivate::fromSeries(series); + connect(series, SIGNAL(visibleChanged()), this, SLOT(handleSeriesVisibleChanged())); + connect(series, SIGNAL(opacityChanged()), this, SLOT(handleOpacityChanged())); + connect(series, SIGNAL(added(QList<QPieSlice*>)), this, SLOT(handleSlicesAdded(QList<QPieSlice*>))); + connect(series, SIGNAL(removed(QList<QPieSlice*>)), this, SLOT(handleSlicesRemoved(QList<QPieSlice*>))); + connect(p, SIGNAL(horizontalPositionChanged()), this, SLOT(updateLayout())); + connect(p, SIGNAL(verticalPositionChanged()), this, SLOT(updateLayout())); + connect(p, SIGNAL(pieSizeChanged()), this, SLOT(updateLayout())); + connect(p, SIGNAL(calculatedDataChanged()), this, SLOT(updateLayout())); + + // Note: the following does not affect as long as the item does not have anything to paint + setZValue(ChartPresenter::PieSeriesZValue); + + // Note: will not create slice items until we have a proper rectangle to draw on. +} + +PieChartItem::~PieChartItem() +{ + // slices deleted automatically through QGraphicsItem + if (m_series) { + m_series->disconnect(this); + QPieSeriesPrivate::fromSeries(m_series)->disconnect(this); + } + foreach (QPieSlice *slice, m_sliceItems.keys()) { + slice->disconnect(this); + QPieSlicePrivate::fromSlice(slice)->disconnect(this); + } +} + +void PieChartItem::setAnimation(PieAnimation *animation) +{ + m_animation = animation; +} + +ChartAnimation *PieChartItem::animation() const +{ + return m_animation; +} + +void PieChartItem::handleDomainUpdated() +{ + QRectF rect(QPointF(0,0),domain()->size()); + if(m_rect!=rect){ + prepareGeometryChange(); + m_rect = rect; + updateLayout(); + + if (m_sliceItems.isEmpty()) + handleSlicesAdded(m_series->slices()); + } +} + +void PieChartItem::updateLayout() +{ + // find pie center coordinates + m_pieCenter.setX(m_rect.left() + (m_rect.width() * m_series->horizontalPosition())); + m_pieCenter.setY(m_rect.top() + (m_rect.height() * m_series->verticalPosition())); + + // find maximum radius for pie + m_pieRadius = m_rect.height() / 2; + if (m_rect.width() < m_rect.height()) + m_pieRadius = m_rect.width() / 2; + + m_holeSize = m_pieRadius; + // apply size factor + m_pieRadius *= m_series->pieSize(); + m_holeSize *= m_series->holeSize(); + + // set layouts for existing slice items + foreach (QPieSlice *slice, m_series->slices()) { + PieSliceItem *sliceItem = m_sliceItems.value(slice); + if (sliceItem) { + PieSliceData sliceData = updateSliceGeometry(slice); + if (m_animation) + presenter()->startAnimation(m_animation->updateValue(sliceItem, sliceData)); + else + sliceItem->setLayout(sliceData); + } + } + + update(); +} + +void PieChartItem::handleSlicesAdded(QList<QPieSlice *> slices) +{ + // delay creating slice items until there is a proper rectangle + if (!m_rect.isValid() && m_sliceItems.isEmpty()) + return; + + themeManager()->updateSeries(m_series); + + bool startupAnimation = m_sliceItems.isEmpty(); + + foreach(QPieSlice * slice, slices) { + PieSliceItem *sliceItem = new PieSliceItem(this); + m_sliceItems.insert(slice, sliceItem); + + // Note: no need to connect to slice valueChanged() etc. + // This is handled through calculatedDataChanged signal. + connect(slice, SIGNAL(labelChanged()), this, SLOT(handleSliceChanged())); + connect(slice, SIGNAL(labelVisibleChanged()), this, SLOT(handleSliceChanged())); + connect(slice, SIGNAL(penChanged()), this, SLOT(handleSliceChanged())); + connect(slice, SIGNAL(brushChanged()), this, SLOT(handleSliceChanged())); + connect(slice, SIGNAL(labelBrushChanged()), this, SLOT(handleSliceChanged())); + connect(slice, SIGNAL(labelFontChanged()), this, SLOT(handleSliceChanged())); + + QPieSlicePrivate *p = QPieSlicePrivate::fromSlice(slice); + connect(p, SIGNAL(labelPositionChanged()), this, SLOT(handleSliceChanged())); + connect(p, SIGNAL(explodedChanged()), this, SLOT(handleSliceChanged())); + connect(p, SIGNAL(labelArmLengthFactorChanged()), this, SLOT(handleSliceChanged())); + connect(p, SIGNAL(explodeDistanceFactorChanged()), this, SLOT(handleSliceChanged())); + + connect(sliceItem, SIGNAL(clicked(Qt::MouseButtons)), slice, SIGNAL(clicked())); + connect(sliceItem, SIGNAL(hovered(bool)), slice, SIGNAL(hovered(bool))); + + PieSliceData sliceData = updateSliceGeometry(slice); + if (m_animation) + presenter()->startAnimation(m_animation->addSlice(sliceItem, sliceData, startupAnimation)); + else + sliceItem->setLayout(sliceData); + } +} + +void PieChartItem::handleSlicesRemoved(QList<QPieSlice *> slices) +{ + themeManager()->updateSeries(m_series); + + foreach (QPieSlice *slice, slices) { + + PieSliceItem *sliceItem = m_sliceItems.value(slice); + + // this can happen if you call append() & remove() in a row so that PieSliceItem is not even created + if (!sliceItem) + continue; + + m_sliceItems.remove(slice); + slice->disconnect(this); + QPieSlicePrivate::fromSlice(slice)->disconnect(this); + + if (m_animation) + presenter()->startAnimation(m_animation->removeSlice(sliceItem)); // animator deletes the PieSliceItem + else + delete sliceItem; + } +} + +void PieChartItem::handleSliceChanged() +{ + QPieSlice *slice = qobject_cast<QPieSlice *>(sender()); + if (!slice) { + QPieSlicePrivate *slicep = qobject_cast<QPieSlicePrivate *>(sender()); + slice = slicep->q_ptr; + } + Q_ASSERT(m_sliceItems.contains(slice)); + + PieSliceItem *sliceItem = m_sliceItems.value(slice); + PieSliceData sliceData = updateSliceGeometry(slice); + if (m_animation) + presenter()->startAnimation(m_animation->updateValue(sliceItem, sliceData)); + else + sliceItem->setLayout(sliceData); + + update(); +} + +void PieChartItem::handleSeriesVisibleChanged() +{ + setVisible(m_series->isVisible()); +} + +void PieChartItem::handleOpacityChanged() +{ + setOpacity(m_series->opacity()); +} + +PieSliceData PieChartItem::updateSliceGeometry(QPieSlice *slice) +{ + PieSliceData &sliceData = QPieSlicePrivate::fromSlice(slice)->m_data; + sliceData.m_center = PieSliceItem::sliceCenter(m_pieCenter, m_pieRadius, slice); + sliceData.m_radius = m_pieRadius; + sliceData.m_holeRadius = m_holeSize; + return sliceData; +} + +#include "moc_piechartitem_p.cpp" + +QT_CHARTS_END_NAMESPACE |