statistics: implement a statistics widget on desktop

Implement a widget that shows the statistics state as comboboxes
and the statistics chart. Calls into the statistics code if any
of the comboboxes changes.

The hardest part here is the formatting of the charts list with
its icons and with headings. Sadly, it is not trivial to arrange
icons horizontally. Therefore we would have to fully reimplement
the ComboBox view, which is probably not fun.

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

1 files changed, 38 insertions, 0 deletions

diff --git a/desktop-widgets/statswidget.h b/desktop-widgets/statswidget.h
new file mode 100644
index 000000000..40e6d106c
--- /dev/null
+++ b/desktop-widgets/statswidget.h
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef STATSWIDGET_H
+#define STATSWIDGET_H
+
+#include "stats/statsstate.h"
+#include "stats/chartlistmodel.h"
+#include "ui_statswidget.h"
+#include <vector>
+#include <memory>
+
+class QCheckBox;
+
+class StatsWidget : public QWidget {
+	Q_OBJECT
+public:
+	StatsWidget(QWidget *parent = 0);
+private
+slots:
+	void closeStats();
+	void chartTypeChanged(int);
+	void var1Changed(int);
+	void var2Changed(int);
+	void var1BinnerChanged(int);
+	void var2BinnerChanged(int);
+	void var2OperationChanged(int);
+	void featureChanged(int, bool);
+private:
+	Ui::StatsWidget ui;
+	StatsState state;
+	void updateUi();
+	std::vector<std::unique_ptr<QCheckBox>> features;
+
+	ChartListModel charts;
+	//QStringListModel charts;
+	void showEvent(QShowEvent *) override;
+};
+
+#endif // STATSWIDGET_H