statistics: highlight selected boxes in box plot

In analogy to bar plots, highlight selected boxes in box plots.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

stats/barseries.cpp

@@ -247,7 +247,7 @@ std::vector<BarSeries::SubItem> BarSeries::makeSubItems(std::vector<SubItemDesc>
 	int bin_nr = 0;
 	for (auto &[v, dives, label]: items) {
 		if (v > 0.0) {
-			bool selected = std::all_of(dives.begin(), dives.end(), [] (const dive *d) { return d->selected; });
+			bool selected = allDivesSelected(dives);
 			res.push_back({ view.createChartItem<ChartBarItem>(ChartZValue::Series, barBorderWidth),
 					std::move(dives),
 					{}, from, from + v, bin_nr, selected });
@@ -428,7 +428,7 @@ void BarSeries::divesSelected(const QVector<dive *> &)
 {
 	for (Item &item: items) {
 		for (SubItem &subitem: item.subitems) {
-			bool selected = std::all_of(subitem.dives.begin(), subitem.dives.end(), [] (const dive *d) { return d->selected; });
+			bool selected = allDivesSelected(subitem.dives);
 			if (subitem.selected != selected) {
 				subitem.selected = selected;
 

stats/boxseries.cpp

@@ -27,9 +27,10 @@ BoxSeries::~BoxSeries()
 }
 
 BoxSeries::Item::Item(StatsView &view, BoxSeries *series, double lowerBound, double upperBound,
-		      const StatsQuartiles &q, const QString &binName) :
-	lowerBound(lowerBound), upperBound(upperBound), q(q),
-	binName(binName)
+		      const StatsQuartiles &qIn, const QString &binName) :
+	lowerBound(lowerBound), upperBound(upperBound), q(qIn),
+	binName(binName),
+	selected(allDivesSelected(q.dives))
 {
 	item = view.createChartItem<ChartBoxItem>(ChartZValue::Series, boxBorderWidth);
 	highlight(false);
@@ -44,6 +45,8 @@ void BoxSeries::Item::highlight(bool highlight)
 {
 	if (highlight)
 		item->setColor(highlightedColor, highlightedBorderColor);
+	else if (selected)
+		item->setColor(selectedColor, selectedBorderColor);
 	else
 		item->setColor(fillColor, ::borderColor);
 }
@@ -155,3 +158,17 @@ bool BoxSeries::selectItemsUnderMouse(const QPointF &pos, bool)
 	setSelection(dives, dives.empty() ? nullptr : dives.front());
 	return true;
 }
+
+void BoxSeries::divesSelected(const QVector<dive *> &)
+{
+	for (auto &item: items) {
+		bool selected = allDivesSelected(item->q.dives);
+		if (item->selected != selected) {
+			item->selected = selected;
+
+			int idx = &item - &items[0];
+			bool highlight = idx == highlighted;
+			item->highlight(highlight);
+		}
+	}
+}

stats/boxseries.h

@@ -39,6 +39,7 @@ private:
 		double lowerBound, upperBound;
 		StatsQuartiles q;
 		QString binName;
+		bool selected;
 		Item(StatsView &view, BoxSeries *series, double lowerBound, double upperBound, const StatsQuartiles &q, const QString &binName);
 		~Item();
 		void updatePosition(BoxSeries *series);
@@ -52,6 +53,7 @@ private:
 	ChartItemPtr<InformationBox> information;
 	std::vector<std::unique_ptr<Item>> items;
 	int highlighted; // -1: no item highlighted
+	void divesSelected(const QVector<dive *> &) override;
 };
 
 #endif

stats/statshelper.cpp

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 #include "statshelper.h"
+#include "core/dive.h"
 
 #include <cmath>
 
@@ -8,3 +9,9 @@ QPointF roundPos(const QPointF &p)
 {
 	return QPointF(round(p.x()), round(p.y()));
 }
+
+bool allDivesSelected(const std::vector<dive *> &dives)
+{
+	return std::all_of(dives.begin(), dives.end(),
+			   [] (const dive *d) { return d->selected; });
+}

stats/statshelper.h

@@ -5,12 +5,18 @@
 #define STATSHELPER_H
 
 #include <memory>
+#include <vector>
 #include <QPointF>
 #include <QSGNode>
 
+struct dive;
+
 // Round positions to integer values to avoid ugly artifacts
 QPointF roundPos(const QPointF &p);
 
+// Are all dives in this vector selected?
+bool allDivesSelected(const std::vector<dive *> &dives);
+
 // A stupid pointer class that initializes to null and can be copy
 // assigned. This is for historical reasons: unique_ptrs to ChartItems
 // were replaced by plain pointers. Instead of nulling the plain pointers