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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
#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_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
const auto slices = m_series->slices();
for (QPieSlice *slice : slices) {
PieSliceItem *sliceItem = m_sliceItems.value(slice);
if (sliceItem) {
const PieSliceData sliceData = updateSliceGeometry(slice);
if (m_animation)
presenter()->startAnimation(m_animation->updateValue(sliceItem, sliceData));
else
sliceItem->setLayout(sliceData);
}
}
update();
}
void PieChartItem::handleSlicesAdded(const 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();
for (auto *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(const QList<QPieSlice *> &slices)
{
themeManager()->updateSeries(m_series);
for (auto *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_END_NAMESPACE
#include "moc_piechartitem_p.cpp"
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