piechartitem.cpp
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r0 | /**************************************************************************** | ||
** | ||||
** 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 | ||||
** and conditions see https://www.qt.io/terms-conditions. For further | ||||
** 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 <private/piechartitem_p.h> | ||||
#include <private/piesliceitem_p.h> | ||||
#include <QtCharts/QPieSlice> | ||||
#include <private/qpieslice_p.h> | ||||
#include <QtCharts/QPieSeries> | ||||
#include <private/qpieseries_p.h> | ||||
#include <private/chartpresenter_p.h> | ||||
#include <private/chartdataset_p.h> | ||||
#include <private/pieanimation_p.h> | ||||
#include <QtGui/QPainter> | ||||
#include <QtCore/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. | ||||
setFlag(QGraphicsItem::ItemIsSelectable); | ||||
} | ||||
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))); | ||||
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; | ||||
} | ||||
#include "moc_piechartitem_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||