nim_duilib/duilib/Control/ScrollBar.h

#ifndef UI_CONTROL_SCROLLBAR_H_
#define UI_CONTROL_SCROLLBAR_H_

#pragma once

namespace ui
{

class UILIB_API ScrollBar : public Control
{
public:
	ScrollBar();

	Box* GetOwner() const;
	void SetOwner(ScrollableBox* pOwner);

	/// <20><>д<EFBFBD><D0B4><EFBFBD>෽<EFBFBD><E0B7BD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><E1B9A9><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD><EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	virtual void SetEnabled(bool bEnable = true) override;
	virtual void SetFocus() override;
	virtual void SetVisible_(bool bVisible) override;
	virtual bool ButtonUp(EventArgs& msg) override;
	virtual bool HasHotState() override;
	virtual bool MouseEnter(EventArgs& msg) override;
	virtual bool MouseLeave(EventArgs& msg) override;
	virtual void SetPos(UiRect rc) override;
	virtual void HandleMessage(EventArgs& event) override;
	virtual void SetAttribute(const std::wstring& strName, const std::wstring& strValue) override;
	virtual void Paint(IRenderContext* pRender, const UiRect& rcPaint) override;
	virtual void ClearImageCache() override;

	/**
	 * @brief <EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ˮƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˮƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ false <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	bool IsHorizontal();

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param[in] <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˮƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> false <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĭ<EFBFBD><EFBFBD>Ϊ true
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetHorizontal(bool bHorizontal = true);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ XML <EFBFBD><EFBFBD> range <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD>ع<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ
	 */
	int64_t GetScrollRange() const;

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ
	 * @param[in] nRange Ҫ<EFBFBD><EFBFBD><EFBFBD>õĹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetScrollRange(int64_t nRange);

	/**
	 * @brief <EFBFBD>ж<EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>Ч
	 * @return true Ϊ<EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ false
	 */
	bool IsValid() { return GetScrollRange() != 0; }

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD>ع<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>
	 */
	int64_t GetScrollPos() const;

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>
	 * @param[in] nPos Ҫ<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetScrollPos(int64_t nPos);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>еĴ<EFBFBD>С
	 * @return <EFBFBD><EFBFBD><EFBFBD>ع<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>еĴ<EFBFBD>С
	 */
	int GetLineSize() const;

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>еĴ<EFBFBD>С
	 * @param[in] nSize Ҫ<EFBFBD><EFBFBD><EFBFBD>õĴ<EFBFBD>С<EFBFBD><EFBFBD>ֵ
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetLineSize(int nSize);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD>ػ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	int GetThumbMinLength() const;

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param[in] nThumbMinLength Ҫ<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetThumbMinLength(int nThumbMinLength);

	/**
	 * @brief <EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϰ<EFBFBD>ť
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true Ϊ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>false Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
	 */
	bool IsShowButton1();

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϰ<EFBFBD>ť
	 * @param[in] bShow <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true Ϊ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>false Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetShowButton1(bool bShow);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϰ<EFBFBD>ťͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼƬλ<EFBFBD><EFBFBD>
	 */
	std::wstring GetButton1StateImage(ControlStateType stateType);

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϰ<EFBFBD>ťͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD>ͼƬ
	 * @param[in] pStrImage ͼƬλ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetButton1StateImage(ControlStateType stateType, const std::wstring& pStrImage);

	/**
	 * @brief <EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD>һ<EFBFBD><EFBFBD>°<EFBFBD>ť
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true Ϊ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>false Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
	 */
	bool IsShowButton2();

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD>һ<EFBFBD><EFBFBD>°<EFBFBD>ť
	 * @param[in] bShow <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true Ϊ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>false Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetShowButton2(bool bShow);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>°<EFBFBD>ťͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼƬλ<EFBFBD><EFBFBD>
	 */
	std::wstring GetButton2StateImage(ControlStateType stateType);

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>°<EFBFBD>ťͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD>ͼƬ
	 * @param[in] pStrImage ͼƬλ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetButton2StateImage(ControlStateType stateType, const std::wstring& pStrImage);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD>ͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼƬλ<EFBFBD><EFBFBD>
	 */
	std::wstring GetThumbStateImage(ControlStateType stateType);

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>µ<EFBFBD>ͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @param[in] pStrImage ͼƬλ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetThumbStateImage(ControlStateType stateType, const std::wstring& pStrImage);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>״̬<EFBFBD>»<EFBFBD><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><EFBFBD><EFBFBD>ʶͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼƬλ<EFBFBD><EFBFBD>
	 */
	std::wstring GetRailStateImage(ControlStateType stateType);

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>»<EFBFBD><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><EFBFBD><EFBFBD>ʶͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @param[in] pStrImage ͼƬλ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetRailStateImage(ControlStateType stateType, const std::wstring& pStrImage);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>״̬<EFBFBD>µı<EFBFBD><EFBFBD><EFBFBD>ͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼƬλ<EFBFBD><EFBFBD>
	 */
	std::wstring GetBkStateImage(ControlStateType stateType);

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>״̬<EFBFBD>µı<EFBFBD><EFBFBD><EFBFBD>ͼƬ
	 * @param[in] stateType Ҫ<EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>״̬<EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 * @param[in] pStrImage ͼƬλ<EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetBkStateImage(ControlStateType stateType, const std::wstring& pStrImage);

	/**
	 * @brief <EFBFBD>Ƿ<EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ع<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD> true Ϊ<EFBFBD>ǣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ false
	 */
	bool IsAutoHideScroll(){return m_bAutoHide;}

	/**
	 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ع<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param[in] hide <EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ true Ϊ<EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD>false Ϊ<EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return <EFBFBD><EFBFBD>
	 */
	void SetAutoHideScroll(bool hide);

	/**
	 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬
	 * @return <EFBFBD><EFBFBD><EFBFBD>ػ<EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> ControlStateType ö<EFBFBD><EFBFBD>
	 */
	ControlStateType GetThumbState() { return m_uThumbState; }

private:
	void ScrollTimeHandle();

	/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><D8BA><EFBFBD>
	void PaintBk(IRenderContext* pRender);
	void PaintButton1(IRenderContext* pRender);
	void PaintButton2(IRenderContext* pRender);
	void PaintThumb(IRenderContext* pRender);
	void PaintRail(IRenderContext* pRender);

protected:
	enum
	{ 
		DEFAULT_SCROLLBAR_SIZE = 16,
	};

	bool m_bHorizontal;
	bool m_bShowButton1;
	bool m_bShowButton2;
	bool m_bAutoHide;
	int64_t m_nRange;
	int64_t m_nScrollPos;
	int m_nLineSize;
	int m_nThumbMinLength;
	int m_nLastScrollPos;
	int m_nLastScrollOffset;
	int m_nScrollRepeatDelay;
	ScrollableBox* m_pOwner;
	POINT m_ptLastMouse;
	UiRect m_rcButton1;
	UiRect m_rcButton2;
	UiRect m_rcThumb;
	ControlStateType m_uButton1State;
	ControlStateType m_uButton2State;
	ControlStateType m_uThumbState;
	std::wstring m_sImageModify;
	StateImage m_bkStateImage;
	StateImage m_button1StateImage;
	StateImage m_button2StateImage;
	StateImage m_thumbStateImage;
	StateImage m_railStateImage;
	nbase::WeakCallbackFlag m_weakFlagOwner;
};

}

#endif // UI_CONTROL_SCROLLBAR_H_