z-bar-qt/Plugins/ZShell/Internal/strokecanvasitem.hpp

#pragma once

#include <QCanvasPainterItem>
#include <QColor>
#include <QPointF>
#include <QVector>
#include <qcolor.h>
#include <qcontainerfwd.h>
#include "stroke.hpp"

namespace ZShell::internal {

class StrokeCanvasRenderer;

class StrokeCanvasItem : public QCanvasPainterItem {
	Q_OBJECT

	QML_NAMED_ELEMENT(StrokeCanvas)

	Q_PROPERTY(
		QColor penColor READ penColor WRITE setPenColor NOTIFY penColorChanged)
	Q_PROPERTY(
		bool hoverVisible READ hoverVisible WRITE setHoverVisible NOTIFY
			hoverVisibleChanged)
	Q_PROPERTY(
		QPointF hoverPoint READ hoverPoint WRITE setHoverPoint NOTIFY
			hoverPointChanged)
	Q_PROPERTY(
		qreal penWidth READ penWidth WRITE setPenWidth NOTIFY penWidthChanged)

	public:
	explicit StrokeCanvasItem(QQuickItem* parent = nullptr);

	[[nodiscard]] bool hoverVisible() const { return m_hoverVisible; }
	[[nodiscard]] QPointF hoverPoint() const { return m_hoverPoint; }

	void setHoverVisible(bool visible);
	void setHoverPoint(const QPointF& point);

	Q_INVOKABLE void showHover(qreal x, qreal y);
	Q_INVOKABLE void hideHover();
	Q_INVOKABLE void undoLastGroup();

	[[nodiscard]] QColor penColor() const { return m_penColor; }
	[[nodiscard]] qreal penWidth() const { return m_penWidth; }

	void setPenColor(const QColor& color);
	void setPenWidth(qreal width);

	Q_INVOKABLE void clear();

	Q_INVOKABLE void beginStroke(qreal x, qreal y, bool polyline = false);
	Q_INVOKABLE void appendPoint(qreal x, qreal y);
	Q_INVOKABLE void endStroke();

	signals:
	void penColorChanged();
	void penWidthChanged();
	void hoverVisibleChanged();
	void hoverPointChanged();

	protected:
	[[nodiscard]] QCanvasPainterItemRenderer* createItemRenderer()
		const override;

	private:
	friend class StrokeCanvasRenderer;

	bool m_hoverVisible = false;
	QPointF m_hoverPoint;
	QColor m_penColor = Qt::white;
	qreal m_penWidth = 4.0;
	bool m_isDrawing = false;

	int m_nextGroupId = 0;
	QVector<Stroke> m_strokes;
	Stroke m_currentStroke;
};

}; // namespace ZShell::internal