| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** 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 |
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| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QtCharts/qpieslice.h> |
| #include <QtCharts/qpieseries.h> |
| #include <QtWidgets/qgraphicssceneevent.h> |
| |
| #include <private/piechartitem_p.h> |
| #include <private/piesliceitem_p.h> |
| #include <private/qpieslice_p.h> |
| #include <private/qpieseries_p.h> |
| #include <private/chartpresenter_p.h> |
| #include <private/chartdataset_p.h> |
| #include <private/pieanimation_p.h> |
| |
| 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. |
| |
| setFlag(QGraphicsItem::ItemIsSelectable); |
| } |
| |
| PieChartItem::~PieChartItem() |
| { |
| cleanup(); |
| } |
| |
| void PieChartItem::setAnimation(PieAnimation *animation) |
| { |
| m_animation = animation; |
| } |
| |
| ChartAnimation *PieChartItem::animation() const |
| { |
| return m_animation; |
| } |
| |
| void PieChartItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) |
| { |
| event->ignore(); |
| } |
| |
| void PieChartItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) |
| { |
| event->ignore(); |
| } |
| |
| void PieChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event) |
| { |
| event->ignore(); |
| } |
| |
| void PieChartItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) |
| { |
| event->ignore(); |
| } |
| |
| void PieChartItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) |
| { |
| event->ignore(); |
| } |
| |
| void PieChartItem::cleanup() |
| { |
| ChartItem::cleanup(); |
| |
| // slice items deleted automatically through QGraphicsItem |
| if (m_series) { |
| m_series->disconnect(this); |
| QPieSeriesPrivate::fromSeries(m_series)->disconnect(this); |
| m_series = 0; |
| } |
| foreach (QPieSlice *slice, m_sliceItems.keys()) { |
| slice->disconnect(this); |
| QPieSlicePrivate::fromSlice(slice)->disconnect(this); |
| } |
| m_sliceItems.clear(); |
| } |
| |
| 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))); |
| connect(sliceItem, SIGNAL(pressed(Qt::MouseButtons)), slice, SIGNAL(pressed())); |
| connect(sliceItem, SIGNAL(released(Qt::MouseButtons)), slice, SIGNAL(released())); |
| connect(sliceItem, SIGNAL(doubleClicked(Qt::MouseButtons)), slice, SIGNAL(doubleClicked())); |
| |
| 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; |
| } |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #include "moc_piechartitem_p.cpp" |