mulelistctrl.h

非常出名开源客户端下载的程序emule

#pragma once
#include "Preferences.h"
#include "resource.h"
//////////////////////////////////
// CMuleListCtrl

class CMuleListCtrl : public CListCtrl
{
	DECLARE_DYNAMIC(CMuleListCtrl)

public:
	CMuleListCtrl(PFNLVCOMPARE pfnCompare = SortProc, DWORD dwParamSort = 0);
	virtual ~CMuleListCtrl();

	// Default sort proc, this does nothing
	static int CALLBACK SortProc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort);

	// Sets the list name, used for hide/show menu
	void SetName(LPCTSTR lpszName);

	// Save to preferences
	void SaveSettings(CPreferences::Table tID);

	// Load from preferences
	void LoadSettings(CPreferences::Table tID);

	// Hide the column
	void HideColumn(int iColumn);

	// Unhide the column
	void ShowColumn(int iColumn);

	// Check to see if the column is hidden
	BOOL IsColumnHidden(int iColumn) const {
		if(iColumn < 1 || iColumn >= m_iColumnsTracked)
			return false;

		return m_aColumns[iColumn].bHidden;
	}

	// Get the correct column width even if column is hidden
	int GetColumnWidth(int iColumn) const {
		if(iColumn < 0 || iColumn >= m_iColumnsTracked)
			return 0;
		
		if(m_aColumns[iColumn].bHidden)
			return m_aColumns[iColumn].iWidth;
		else
			return CListCtrl::GetColumnWidth(iColumn);
	}

	// Call SetRedraw to allow changes to be redrawn or to prevent changes from being redrawn.
	void SetRedraw(BOOL bRedraw = TRUE) {
		if(bRedraw) {
			if(m_iRedrawCount > 0 && --m_iRedrawCount == 0)
				CListCtrl::SetRedraw(TRUE);
		} else {
			if(m_iRedrawCount++ == 0)
				CListCtrl::SetRedraw(FALSE);
		}
	}

	// Sorts the list
	BOOL SortItems(PFNLVCOMPARE pfnCompare, DWORD_PTR dwData) {
		return CListCtrl::SortItems(pfnCompare, dwData);
	}

	// Sorts the list
	BOOL SortItems(DWORD dwData) { return CListCtrl::SortItems(m_SortProc, dwData); }

	// Sets the sorting procedure
	void SetSortProcedure(PFNLVCOMPARE funcSortProcedure) { m_SortProc = funcSortProcedure; }

	// Gets the sorting procedure
	PFNLVCOMPARE GetSortProcedure() { return m_SortProc; }

	// Retrieves the data (lParam) associated with a particular item.
	DWORD_PTR GetItemData(int iItem);

	// Retrieves the number of items in the control.
	int GetItemCount() const { return m_Params.GetCount(); };

	enum ArrowType { arrowDown = IDB_DOWN, arrowUp = IDB_UP,
		arrowDoubleDown = IDB_DOWN2X, arrowDoubleUp = IDB_UP2X };

	// Places a sort arrow in a column
	void SetSortArrow(int iColumn, ArrowType atType);

	// Places a sort arrow in a column
	void SetSortArrow(int iColumn, bool bAscending) {
		SetSortArrow(iColumn, bAscending ? arrowUp : arrowDown);
	}

protected:
	virtual void PreSubclassWindow();
	virtual BOOL OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);
	virtual BOOL OnChildNotify(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);

	afx_msg void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnSysColorChange();

	DECLARE_MESSAGE_MAP()

	// Checks the item to see if it is in order
	int          UpdateLocation(int iItem);
	// Moves the item in list and returns the new index
	int          MoveItem(int iOldIndex, int iNewIndex);
	// Update the colors
	void         SetColors();
	DWORD        SetExtendedStyle(DWORD dwNewStyle) {
		return CListCtrl::SetExtendedStyle(dwNewStyle | LVS_EX_HEADERDRAGDROP);
	}

	CString          m_Name;
	PFNLVCOMPARE     m_SortProc;
	DWORD            m_dwParamSort;
	COLORREF         m_crWindow;
	COLORREF         m_crWindowText;
	COLORREF         m_crHighlight;
	COLORREF         m_crFocusLine;
	COLORREF         m_crNoHighlight;
	COLORREF         m_crNoFocusLine;
	NMLVCUSTOMDRAW   m_lvcd;
	bool             m_bCustomDraw;

private:
	static int IndexToOrder(CHeaderCtrl* pHeader, int iIndex);

	struct MULE_COLUMN {
		int iWidth;
		int iLocation;
		bool bHidden;
	};

	int          m_iColumnsTracked;
	MULE_COLUMN *m_aColumns;

	int GetHiddenColumnCount() const {
		int iHidden = 0;
		for(int i = 0; i < m_iColumnsTracked; i++)
			if(m_aColumns[i].bHidden)
				iHidden++;
		return iHidden;
	}

	int       m_iCurrentSortItem;
	ArrowType m_atSortArrow;

	int m_iRedrawCount;
	CList<DWORD_PTR> m_Params;

	DWORD_PTR GetParamAt(POSITION pos, int iPos) {
		LPARAM lParam = m_Params.GetAt(pos);
		if(lParam == 0xFEEBDEEF) //same as MLC_MAGIC!
			m_Params.SetAt(pos, lParam = CListCtrl::GetItemData(iPos));
		return lParam;
	}
};