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// SPDX-License-Identifier: GPL-2.0
#ifndef STATS_VIEW_H
#define STATS_VIEW_H
#include "statsstate.h"
#include "statshelper.h"
#include <memory>
#include <QFont>
#include <QImage>
#include <QPainter>
#include <QQuickItem>
struct dive;
struct StatsBinner;
struct StatsBin;
struct StatsState;
struct StatsVariable;
class StatsSeries;
class CategoryAxis;
class ChartItem;
class ChartTextItem;
class CountAxis;
class HistogramAxis;
class HistogramMarker;
class QuartileMarker;
class RegressionItem;
class StatsAxis;
class StatsGrid;
class Legend;
class QSGTexture;
class RootNode; // Internal implementation detail
enum class ChartSubType : int;
enum class ChartZValue : int;
enum class StatsOperation : int;
class StatsView : public QQuickItem {
Q_OBJECT
public:
StatsView();
StatsView(QQuickItem *parent);
~StatsView();
void plot(const StatsState &state);
void updateFeatures(const StatsState &state); // Updates the visibility of chart features, such as legend, regression, etc.
QQuickWindow *w() const; // Make window available to items
QSizeF size() const;
QRectF plotArea() const;
void addQSGNode(QSGNode *node, ChartZValue z); // Must only be called in render thread!
void registerChartItem(ChartItem &item);
void registerDirtyChartItem(ChartItem &item);
// Create a chart item and add it to the scene.
// The item must not be deleted by the caller, but can be
// scheduled for deletion using deleteChartItem() below.
// Most items can be made invisible, which is preferred over deletion.
// All items on the scene will be deleted once the chart is reset.
template <typename T, class... Args>
ChartItemPtr<T> createChartItem(Args&&... args);
template <typename T>
void deleteChartItem(ChartItemPtr<T> &item);
private slots:
void replotIfVisible();
private:
// QtQuick related things
bool backgroundDirty;
QRectF plotRect;
QSGNode *updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *updatePaintNodeData) override;
void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override;
void plotAreaChanged(const QSizeF &size);
void reset(); // clears all series and axes
void setAxes(StatsAxis *x, StatsAxis *y);
void plotBarChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner,
const StatsVariable *valueVariable, const StatsBinner *valueBinner);
void plotValueChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner,
const StatsVariable *valueVariable, StatsOperation valueAxisOperation);
void plotDiscreteCountChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner);
void plotPieChart(const std::vector<dive *> &dives,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner);
void plotDiscreteBoxChart(const std::vector<dive *> &dives,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner, const StatsVariable *valueVariable);
void plotDiscreteScatter(const std::vector<dive *> &dives,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner,
const StatsVariable *valueVariable);
void plotHistogramCountChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner);
void plotHistogramValueChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner,
const StatsVariable *valueVariable, StatsOperation valueAxisOperation);
void plotHistogramStackedChart(const std::vector<dive *> &dives,
ChartSubType subType,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner,
const StatsVariable *valueVariable, const StatsBinner *valueBinner);
void plotHistogramBoxChart(const std::vector<dive *> &dives,
const StatsVariable *categoryVariable, const StatsBinner *categoryBinner, const StatsVariable *valueVariable);
void plotScatter(const std::vector<dive *> &dives, const StatsVariable *categoryVariable, const StatsVariable *valueVariable);
void setTitle(const QString &);
void updateTitlePos(); // After resizing, set title to correct position
void plotChart();
void updateFeatures(); // Updates the visibility of chart features, such as legend, regression, etc.
template <typename T, class... Args>
T *createSeries(Args&&... args);
template <typename T, class... Args>
T *createAxis(const QString &title, Args&&... args);
template<typename T>
CategoryAxis *createCategoryAxis(const QString &title, const StatsBinner &binner,
const std::vector<T> &bins, bool isHorizontal);
template<typename T>
HistogramAxis *createHistogramAxis(const QString &title, const StatsBinner &binner,
const std::vector<T> &bins, bool isHorizontal);
CountAxis *createCountAxis(int maxVal, bool isHorizontal);
// Helper functions to add feature to the chart
void addLineMarker(double pos, double low, double high, const QPen &pen, bool isHorizontal);
StatsState state;
QFont titleFont;
std::vector<std::unique_ptr<StatsSeries>> series;
std::unique_ptr<StatsGrid> grid;
std::vector<ChartItemPtr<QuartileMarker>> quartileMarkers;
ChartItemPtr<HistogramMarker> medianMarker, meanMarker;
StatsSeries *highlightedSeries;
StatsAxis *xAxis, *yAxis;
ChartItemPtr<ChartTextItem> title;
ChartItemPtr<Legend> legend;
Legend *draggedItem;
ChartItemPtr<RegressionItem> regressionItem;
QPointF dragStartMouse, dragStartItem;
void hoverEnterEvent(QHoverEvent *event) override;
void hoverMoveEvent(QHoverEvent *event) override;
void mousePressEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
RootNode *rootNode;
// There are three double linked lists of chart items:
// clean items, dirty items and items to be deleted.
struct ChartItemList {
ChartItemList();
ChartItem *first, *last;
void append(ChartItem &item);
void remove(ChartItem &item);
void clear();
void splice(ChartItemList &list);
};
ChartItemList cleanItems, dirtyItems, deletedItems;
void deleteChartItemInternal(ChartItem &item);
};
// This implementation detail must be known to users of the class.
// Perhaps move it into a statsview_impl.h file.
template <typename T, class... Args>
ChartItemPtr<T> StatsView::createChartItem(Args&&... args)
{
return ChartItemPtr(new T(*this, std::forward<Args>(args)...));
}
template <typename T>
void StatsView::deleteChartItem(ChartItemPtr<T> &item)
{
deleteChartItemInternal(*item);
item.reset();
}
#endif
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