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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.io
**
** This file is part of the Qt Charts module.
**
** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt 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.io
**
****************************************************************************/
#include <private/stackedbarchartitem_p.h>
#include <private/bar_p.h>
#include <private/qbarset_p.h>
#include <private/qabstractbarseries_p.h>
#include <QtCharts/QBarSet>
QT_CHARTS_BEGIN_NAMESPACE
StackedBarChartItem::StackedBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) :
AbstractBarChartItem(series, item)
{
connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)),
this, SLOT(handleLabelsPositionChanged()));
connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels()));
}
void StackedBarChartItem::initializeLayout()
{
qreal categoryCount = m_series->d_func()->categoryCount();
qreal setCount = m_series->count();
qreal barWidth = m_series->d_func()->barWidth();
m_layout.clear();
for(int category = 0; category < categoryCount; category++) {
for (int set = 0; set < setCount; set++) {
QRectF rect;
QPointF topLeft;
QPointF bottomRight;
if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) {
topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, domain()->minY()), m_validData);
bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, domain()->minY()), m_validData);
} else {
topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, 0), m_validData);
bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, 0), m_validData);
}
if (!m_validData)
return;
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
m_layout.append(rect.normalized());
}
}
}
QVector<QRectF> StackedBarChartItem::calculateLayout()
{
QVector<QRectF> layout;
// Use temporary qreals for accuracy
qreal categoryCount = m_series->d_func()->categoryCount();
qreal setCount = m_series->count();
qreal barWidth = m_series->d_func()->barWidth();
for(int category = 0; category < categoryCount; category++) {
qreal positiveSum = 0;
qreal negativeSum = 0;
for (int set = 0; set < setCount; set++) {
qreal value = m_series->barSets().at(set)->at(category);
QRectF rect;
QPointF topLeft;
QPointF bottomRight;
if (value < 0) {
bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, value + negativeSum), m_validData);
if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain)
topLeft = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? negativeSum : domain()->minY()), m_validData);
else
topLeft = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? negativeSum : 0), m_validData);
negativeSum += value;
} else {
topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, value + positiveSum), m_validData);
if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain)
bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? positiveSum : domain()->minY()), m_validData);
else
bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? positiveSum : 0), m_validData);
positiveSum += value;
}
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
layout.append(rect.normalized());
}
}
return layout;
}
void StackedBarChartItem::handleLabelsPositionChanged()
{
positionLabels();
}
void StackedBarChartItem::positionLabels()
{
for (int i = 0; i < m_layout.count(); i++) {
QGraphicsTextItem *label = m_labels.at(i);
qreal xPos = m_layout.at(i).center().x() - label->boundingRect().center().x();
qreal yPos = 0;
int offset = m_bars.at(i)->pen().width() / 2 + 2;
if (m_series->labelsPosition() == QAbstractBarSeries::LabelsCenter)
yPos = m_layout.at(i).center().y() - label->boundingRect().center().y();
else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideEnd)
yPos = m_layout.at(i).top() - offset;
else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase)
yPos = m_layout.at(i).bottom() - label->boundingRect().height() + offset;
else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd)
yPos = m_layout.at(i).top() - label->boundingRect().height() + offset;
label->setPos(xPos, yPos);
label->setZValue(zValue() + 1);
}
}
#include "moc_stackedbarchartitem_p.cpp"
QT_CHARTS_END_NAMESPACE
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