ActWorld/MapPresent/MapPresent.h

#pragma once

#include "mappresent_global.h"
#include <QWidget>
#include <memory>


/// <summary>
/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
/// </summary>
struct MAPPRESENT_EXPORT PresentIndex {
	/// <summary>
	/// <20>к<EFBFBD>
	/// </summary>
	int row = INT_MAX;
	/// <summary>
	/// <20>к<EFBFBD>
	/// </summary>
	int col = INT_MAX;

	bool isValid() const;

	PresentIndex& operator+=(const PresentIndex& other);
	bool operator!=(const PresentIndex& other) const;
	bool operator==(const PresentIndex& other) const;
};

/// <summary>
/// <20><><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1>
/// </summary>
struct MAPPRESENT_EXPORT PresentOption {
	/// <summary>
	/// <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	PresentIndex index;
	/// <summary>
	/// <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ե
	/// </summary>
	QRectF outline;

	PresentOption& operator=(const PresentOption& other);
};

/// <summary>
/// <20><>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>ί<EFBFBD><CEAF>
/// </summary>
class MAPPRESENT_EXPORT UnitPresentDelegate : public QObject {
	Q_OBJECT
public:
	UnitPresentDelegate(QObject* parent = nullptr);
	virtual ~UnitPresentDelegate() = default;

	/// <summary>
	/// ƥ<>䵥Ԫ<E4B5A5><D4AA><EFBFBD><EFBFBD>
	/// </summary>
	/// <returns></returns>
	virtual int unitType() const = 0;
	/// <summary>
	/// <20><><EFBFBD>Ʊ<EFBFBD><C6B1><EFBFBD>Ԫ<EFBFBD><D4AA>Ƭ
	/// </summary>
	/// <param name="p"></param>
	/// <param name="option"></param>
	virtual void paint(QPainter* p, const PresentOption& option) = 0;

signals:
	/// <summary>
	/// <20><><EFBFBD><EFBFBD>֪ͨ/<2F>ػ<EFBFBD><D8BB><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	void updateRequest(const PresentIndex &idx);
};

/// <summary>
/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD><C6AC>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD>
/// </summary>
class MAPPRESENT_EXPORT MapPresent : public QWidget
{
	Q_OBJECT
private:
	/// <summary>
	/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α䳤
	/// </summary>
	const float _primitive_region_len = 100;
	/// <summary>
	/// <20><><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
	/// </summary>
	short _scale_times = 1;
	/// <summary>
	/// <20><>ǰ<EFBFBD><C7B0>Ƭ<EFBFBD><C6AC>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	PresentIndex _center_index;

	// ===================================
	/// <summary>
	/// <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	QList<PresentOption> _visible_units;
	/// <summary>
	/// <20><><EFBFBD>ӻ<EFBFBD><D3BB><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>
	/// </summary>
	void visible_units_tidy();
	/// <summary>
	/// <20><><EFBFBD>ӻ<EFBFBD><D3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	/// <param name="a"></param>
	/// <param name="b"></param>
	/// <returns></returns>
	QList<PresentIndex> item_supply(const PresentIndex& a, const PresentIndex& b) const;

	// ===================================
	/// <summary>
	/// <20><><EFBFBD>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD>ί<EFBFBD><CEAF>
	/// </summary>
	QHash<int, UnitPresentDelegate*> _type_present_delegate;


public:
	MapPresent(QWidget* parent = nullptr);

	/// <summary>
	/// ͨ<><CDA8>widget<65>϶<EFBFBD>λ<EFBFBD><CEBB>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	/// </summary>
	/// <param name="pos"></param>
	/// <returns></returns>
	PresentIndex indexGet(const QPointF& pos) const;
	/// <summary>
	/// ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡָ<C8A1><D6B8><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD>Ӿ<EFBFBD><D3BE><EFBFBD>
	/// </summary>
	/// <param name="idx"></param>
	/// <returns></returns>
	QRectF outlineGet(const PresentIndex& idx) const;
	/// <summary>
	/// <20><>ȡ<EFBFBD><C8A1>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ
	/// </summary>
	/// <param name="center"><3E><><EFBFBD>ĵ<EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD></param>
	/// <param name="dist"><3E><>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD></param>
	/// <returns></returns>
	QList<PresentIndex> siblingsGet(const PresentIndex& center, uint16_t dist = 1) const;

signals:
	void mouseIn();
	void mouseOut();
	void mouseHover(const PresentIndex& unit_index);

protected:
	void paintEvent(QPaintEvent* ev) override;
	void resizeEvent(QResizeEvent* event) override;

	void mouseMoveEvent(QMouseEvent* event) override;
	void enterEvent(QEvent* event) override;
	void leaveEvent(QEvent* event) override;

};