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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <private/stackedbarchartitem_p.h>
#include <private/bar_p.h>
#include <private/qbarset_p.h>
#include <private/qabstractbarseries_p.h>
#include <QtCharts/QBarSet>
QT_BEGIN_NAMESPACE
StackedBarChartItem::StackedBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) :
AbstractBarChartItem(series, item)
{
m_orientation = Qt::Vertical;
connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)),
this, SLOT(handleLabelsPositionChanged()));
connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels()));
}
void StackedBarChartItem::initializeLayout(int set, int category,
int layoutIndex, bool resetAnimation)
{
Q_UNUSED(set);
Q_UNUSED(resetAnimation);
QRectF rect;
if (set > 0) {
const QBarSet *barSet = m_series->barSets().at(set);
const qreal value = barSet->at(category);
int checkIndex = set;
bool found = false;
// Negative values stack to negative side and positive values to positive side, so we need
// to find the previous set that stacks to the same side
while (checkIndex > 0 && !found) {
checkIndex--;
QBarSet *checkSet = m_series->barSets().at(checkIndex);
const qreal checkValue = checkSet->at(category);
if ((value < 0.0) == (checkValue < 0.0)) {
Bar *checkBar = m_indexForBarMap.value(checkSet).value(category);
rect = m_layout.at(checkBar->layoutIndex());
found = true;
break;
}
}
// If we didn't find a previous set to the same direction, just stack next to the first set
if (!found) {
QBarSet *firsSet = m_series->barSets().at(0);
Bar *firstBar = m_indexForBarMap.value(firsSet).value(category);
rect = m_layout.at(firstBar->layoutIndex());
}
if (value < 0)
rect.setTop(rect.bottom());
else
rect.setBottom(rect.top());
} else {
QPointF topLeft;
QPointF bottomRight;
const qreal barWidth = m_series->d_func()->barWidth() * m_seriesWidth;
if (domain()->type() == AbstractDomain::XLogYDomain
|| domain()->type() == AbstractDomain::LogXLogYDomain) {
topLeft = topLeftPoint(category, barWidth, domain()->minY());
bottomRight = bottomRightPoint(category, barWidth, domain()->minY());
} else {
topLeft = topLeftPoint(category, barWidth, 0.0);
bottomRight = bottomRightPoint(category, barWidth, 0.0);
}
if (m_validData) {
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
}
}
m_layout[layoutIndex] = rect.normalized();
}
QPointF StackedBarChartItem::topLeftPoint(int category, qreal barWidth, qreal value)
{
return domain()->calculateGeometryPoint(
QPointF(m_seriesPosAdjustment + category - (barWidth / 2), value), m_validData);
}
QPointF StackedBarChartItem::bottomRightPoint(int category, qreal barWidth, qreal value)
{
return domain()->calculateGeometryPoint(
QPointF(m_seriesPosAdjustment + category + (barWidth / 2), value), m_validData);
}
QList<QRectF> StackedBarChartItem::calculateLayout()
{
QList<QRectF> layout;
layout.resize(m_layout.size());
const int setCount = m_series->count();
const qreal barWidth = m_series->d_func()->barWidth() * m_seriesWidth;
QList<qreal> positiveSums(m_categoryCount, 0.0);
QList<qreal> negativeSums(m_categoryCount, 0.0);
for (int set = 0; set < setCount; set++) {
QBarSet *barSet = m_series->barSets().at(set);
const QList<Bar *> bars = m_barMap.value(barSet);
for (int i = 0; i < m_categoryCount; i++) {
Bar *bar = bars.at(i);
const int category = bar->index();
qreal &positiveSum = positiveSums[category - m_firstCategory];
qreal &negativeSum = negativeSums[category - m_firstCategory];
qreal value = barSet->at(category);
QRectF rect;
QPointF topLeft;
QPointF bottomRight;
if (value < 0.0) {
topLeft = topLeftPoint(category, barWidth, value + negativeSum);
if (domain()->type() == AbstractDomain::XLogYDomain
|| domain()->type() == AbstractDomain::LogXLogYDomain) {
bottomRight = bottomRightPoint(category, barWidth,
set ? negativeSum : domain()->minY());
} else {
bottomRight = bottomRightPoint(category, barWidth, set ? negativeSum : 0.0);
}
negativeSum += value;
} else {
topLeft = topLeftPoint(category, barWidth, value + positiveSum);
if (domain()->type() == AbstractDomain::XLogYDomain
|| domain()->type() == AbstractDomain::LogXLogYDomain) {
bottomRight = bottomRightPoint(category, barWidth,
set ? positiveSum : domain()->minY());
} else {
bottomRight = bottomRightPoint(category, barWidth, set ? positiveSum : 0.0);
}
positiveSum += value;
}
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
rect = rect.normalized();
layout[bar->layoutIndex()] = rect;
// If animating, we need to reinitialize ~zero size bars with non-zero values
// so the bar growth animation starts at correct spot. We shouldn't reset if rect
// is already at correct position vertically, so we check for that.
if (m_animation && value != 0.0) {
const QRectF &checkRect = m_layout.at(bar->layoutIndex());
if (checkRect.isEmpty() &&
((value < 0.0 && !qFuzzyCompare(checkRect.top(), rect.top()))
|| (value > 0.0 && !qFuzzyCompare(checkRect.bottom(), rect.bottom())))) {
initializeLayout(set, category, bar->layoutIndex(), true);
}
}
}
}
return layout;
}
void StackedBarChartItem::handleLabelsPositionChanged()
{
positionLabels();
}
void StackedBarChartItem::positionLabels()
{
positionLabelsVertical();
}
QT_END_NAMESPACE
#include "moc_stackedbarchartitem_p.cpp"