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// SPDX-License-Identifier: GPL-2.0
#include "boxseries.h"
#include "informationbox.h"
#include "statscolors.h"
#include "statshelper.h"
#include "statstranslations.h"
#include "zvalues.h"
#include <QChart>
#include <QLocale>
// Constants that control the bar layout
static const double boxWidth = 0.8; // 1.0 = full width of category
static const int boxBorderWidth = 2;
BoxSeries::BoxSeries(QGraphicsScene *scene, StatsAxis *xAxis, StatsAxis *yAxis,
const QString &variable, const QString &unit, int decimals) :
StatsSeries(scene, xAxis, yAxis),
variable(variable), unit(unit), decimals(decimals), highlighted(-1)
{
}
BoxSeries::~BoxSeries()
{
}
BoxSeries::Item::Item(QGraphicsScene *scene, BoxSeries *series, double lowerBound, double upperBound,
const StatsQuartiles &q, const QString &binName) :
lowerBound(lowerBound), upperBound(upperBound), q(q),
binName(binName)
{
box.setZValue(ZValues::series);
topWhisker.setZValue(ZValues::series);
bottomWhisker.setZValue(ZValues::series);
topBar.setZValue(ZValues::series);
bottomBar.setZValue(ZValues::series);
center.setZValue(ZValues::series);
scene->addItem(&box);
scene->addItem(&topWhisker);
scene->addItem(&bottomWhisker);
scene->addItem(&topBar);
scene->addItem(&bottomBar);
scene->addItem(¢er);
highlight(false);
updatePosition(series);
}
BoxSeries::Item::~Item()
{
}
void BoxSeries::Item::highlight(bool highlight)
{
QBrush brush = highlight ? QBrush(highlightedColor) : QBrush(fillColor);
QPen pen = highlight ? QPen(highlightedBorderColor, boxBorderWidth) : QPen(::borderColor, boxBorderWidth);
box.setBrush(brush);
box.setPen(pen);
topWhisker.setPen(pen);
bottomWhisker.setPen(pen);
topBar.setPen(pen);
bottomBar.setPen(pen);
center.setPen(pen);
}
void BoxSeries::Item::updatePosition(BoxSeries *series)
{
double delta = (upperBound - lowerBound) * boxWidth;
double from = (lowerBound + upperBound - delta) / 2.0;
double to = (lowerBound + upperBound + delta) / 2.0;
double mid = (from + to) / 2.0;
QPointF topLeft, bottomRight;
QMarginsF margins(boxBorderWidth / 2.0, boxBorderWidth / 2.0, boxBorderWidth / 2.0, boxBorderWidth / 2.0);
topLeft = series->toScreen(QPointF(from, q.max));
bottomRight = series->toScreen(QPointF(to, q.min));
bounding = QRectF(topLeft, bottomRight).marginsAdded(margins);
double left = topLeft.x();
double right = bottomRight.x();
double width = right - left;
double top = topLeft.y();
double bottom = bottomRight.y();
QPointF q1 = series->toScreen(QPointF(mid, q.q1));
QPointF q2 = series->toScreen(QPointF(mid, q.q2));
QPointF q3 = series->toScreen(QPointF(mid, q.q3));
box.setRect(left, q3.y(), width, q1.y() - q3.y());
topWhisker.setLine(q3.x(), top, q3.x(), q3.y());
bottomWhisker.setLine(q1.x(), q1.y(), q1.x(), bottom);
topBar.setLine(left, top, right, top);
bottomBar.setLine(left, bottom, right, bottom);
center.setLine(left, q2.y(), right, q2.y());
}
void BoxSeries::append(double lowerBound, double upperBound, const StatsQuartiles &q, const QString &binName)
{
items.emplace_back(new Item(scene, this, lowerBound, upperBound, q, binName));
}
void BoxSeries::updatePositions()
{
for (auto &item: items)
item->updatePosition(this);
}
// Attention: this supposes that items are sorted by position and no box is inside another box!
int BoxSeries::getItemUnderMouse(const QPointF &point)
{
// Search the first item whose "end" position is greater than the cursor position.
auto it = std::lower_bound(items.begin(), items.end(), point.x(),
[] (const std::unique_ptr<Item> &item, double x) { return item->bounding.right() < x; });
return it != items.end() && (*it)->bounding.contains(point) ? it - items.begin() : -1;
}
static QString infoItem(const QString &name, const QString &unit, int decimals, double value)
{
QLocale loc;
QString formattedValue = loc.toString(value, 'f', decimals);
return unit.isEmpty() ? QStringLiteral(" %1: %2").arg(name, formattedValue)
: QStringLiteral(" %1: %2 %3").arg(name, formattedValue, unit);
}
std::vector<QString> BoxSeries::formatInformation(const Item &item) const
{
QLocale loc;
return {
StatsTranslations::tr("%1 (%2 dives)").arg(item.binName, loc.toString(item.q.count)),
QStringLiteral("%1:").arg(variable),
infoItem(StatsTranslations::tr("min"), unit, decimals, item.q.min),
infoItem(StatsTranslations::tr("Q1"), unit, decimals, item.q.q1),
infoItem(StatsTranslations::tr("median"), unit, decimals, item.q.q2),
infoItem(StatsTranslations::tr("Q3"), unit, decimals, item.q.q3),
infoItem(StatsTranslations::tr("max"), unit, decimals, item.q.max)
};
}
// Highlight item when hovering over item
bool BoxSeries::hover(QPointF pos)
{
int index = getItemUnderMouse(pos);
if (index == highlighted) {
if (information)
information->setPos(pos);
return index >= 0;
}
unhighlight();
highlighted = index;
// Highlight new item (if any)
if (highlighted >= 0 && highlighted < (int)items.size()) {
Item &item = *items[highlighted];
item.highlight(true);
if (!information)
information = createItemPtr<InformationBox>(scene);
information->setText(formatInformation(item), pos);
} else {
information.reset();
}
return highlighted >= 0;
}
void BoxSeries::unhighlight()
{
if (highlighted >= 0 && highlighted < (int)items.size())
items[highlighted]->highlight(false);
highlighted = -1;
}
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