// riched.h : header file
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1997 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#ifndef __RULER_H__
#define __RULER_H__

class CWordPadView;
class CWordPadDoc;
class CRulerBar;

// ruler items include left margin, right margin, indent, and tabs

// horz positions in twips -- necessary to avoid rounding errors
// vertical position in pixels
class CRulerItem
{
public:
	CRulerItem(UINT nBitmapID = 0);
	~CRulerItem();
	virtual BOOL HitTestPix(CPoint pt) { return GetHitRectPix().PtInRect(pt); }
	virtual void Draw(CDC& dc);
	virtual void SetHorzPosTwips(int nXPos);
	virtual void TrackHorzPosTwips(int nXPos, BOOL bOnRuler = TRUE);
	virtual void SetVertPos(int nYPos) { m_nYPosPix = nYPos; }
	virtual void SetAlignment(int nAlign) {m_nAlignment = nAlign;}
	virtual void SetRuler(CRulerBar* pRuler) {m_pRuler = pRuler;}
	virtual void SetBounds(int nMin, int nMax) { m_nMin = nMin; m_nMax = nMax; }
	int GetMin() { return m_nMin;}
	int GetMax() { return m_nMax;}
	void Invalidate();
	int GetVertPosPix() { return m_nYPosPix;}
	int GetHorzPosTwips() { return m_nXPosTwips;}
	int GetHorzPosPix();
	CRect GetHitRectPix();
	void DrawFocusLine();
	void SetTrack(BOOL b);

	HBITMAP m_hbm;
	HBITMAP m_hbmMask;
	CSize m_size;	// size of item in pixels

// Operations
	BOOL LoadMaskedBitmap(LPCTSTR lpszResourceName);

protected:
	int m_nYPosPix;
	int m_nXPosTwips;
	int m_nAlignment;
	BOOL m_bTrack;
	CRulerBar* m_pRuler;
	CRect m_rcTrack;
	CDC* m_pDC; // dc used for drawing tracking line
	int m_nMin, m_nMax;
};

class CComboRulerItem : public CRulerItem
{ 
public:
	CComboRulerItem(UINT nBitmapID1, UINT nBitmapID2, CRulerItem& item);
	virtual BOOL HitTestPix(CPoint pt);
	virtual void Draw(CDC& dc);
	virtual void SetHorzPosTwips(int nXPos);
	virtual void TrackHorzPosTwips(int nXPos, BOOL bOnRuler = TRUE);
	virtual void SetVertPos(int nYPos);
	virtual void SetAlignment(int nAlign);
	virtual void SetRuler(CRulerBar* pRuler);
	virtual void SetBounds(int nMin, int nMax);
	int GetMin();
	int GetMax();
protected:
	CRulerItem m_secondary;
	CRulerItem& m_link;
	BOOL m_bHitPrimary;
};

class CTabRulerItem : public CRulerItem
{
public:
	CTabRulerItem() { SetAlignment(TA_LEFT); }
	virtual void Draw(CDC& dc) {if (GetHorzPosTwips() != 0) CRulerItem::Draw(dc);}
	virtual void TrackHorzPosTwips(int nXPos, BOOL bOnRuler = TRUE);
	virtual BOOL HitTestPix(CPoint pt) { return (GetHorzPosTwips() != 0) ? CRulerItem::HitTestPix(pt) : FALSE;}
};

/////////////////////////////////////////////////////////////////////////////
// CRulerBar

class CRulerBar : public CControlBar
{
// Construction
public:
	CRulerBar(BOOL b3DExt = TRUE);
	~CRulerBar();

// Operations
public:
	virtual BOOL Create(CWnd* pParentWnd, DWORD dwStyle, UINT nID);
protected:
	void Update(const PARAFORMAT& pf);
	void Update(CSize sizePaper, const CRect& rectMargins);

// Attributes
public:
	BOOL m_bDeferInProgress;
	BOOL m_bDraw3DExt;
	CUnit m_unit;
	CRulerItem* m_pSelItem;
	CFont fnt;
	CSize GetBaseUnits();
	CComboRulerItem m_leftmargin;
	CRulerItem m_indent;
	CRulerItem m_rightmargin;
	CRulerItem m_tabItem;
	CTabRulerItem m_pTabItems[MAX_TAB_STOPS];
	CSize m_sizePaper;
	CRect m_rectMargin;
	int PrintWidth() {return m_sizePaper.cx - m_rectMargin.left - 
		m_rectMargin.right;}
	int m_nTabs;
	int m_logx;
	int m_nLinePos;
	int m_nScroll; // in pixels

	CPen penFocusLine;
	CPen penBtnHighLight;
	CPen penBtnShadow;
	CPen penWindowFrame;
	CPen penBtnText;
	CPen penBtnFace;
	CPen penWindowText;
	CPen penWindow;
	CBrush brushWindow;
	CBrush brushBtnFace;

// Implementation
public:
	virtual void DoPaint(CDC* pDC);
	virtual CSize CalcFixedLayout(BOOL bStretch, BOOL bHorz);
	void ClientToRuler(CPoint& pt) {pt.Offset(-m_cxLeftBorder+m_nScroll, -m_cyTopBorder);}
	void ClientToRuler(CRect& rect) {rect.OffsetRect(-m_cxLeftBorder+m_nScroll, -m_cyTopBorder);}
	void RulerToClient(CPoint& pt) {pt.Offset(m_cxLeftBorder-m_nScroll, m_cyTopBorder);}
	void RulerToClient(CRect& rect) {rect.OffsetRect(m_cxLeftBorder-m_nScroll, m_cyTopBorder);}

	int XTwipsToClient(int nT) {return MulDiv(nT, m_logx, 1440) + m_cxLeftBorder - m_nScroll;}
	int XClientToTwips(int nC) {return MulDiv(nC - m_cxLeftBorder + m_nScroll, 1440, m_logx);}

	int XTwipsToRuler(int nT) {return MulDiv(nT, m_logx, 1440);}
	int XRulerToTwips(int nR) {return MulDiv(nR, 1440, m_logx);}

	int XRulerToClient(int nR) {return nR + m_cxLeftBorder - m_nScroll;}
	int XClientToRuler(int nC) {return nC - m_cxLeftBorder + m_nScroll;}

protected:
	virtual void OnUpdateCmdUI(CFrameWnd* pTarget, BOOL bDisableIfNoHndler);
	void CreateGDIObjects();
	void DrawFace(CDC& dc);
	void DrawTickMarks(CDC& dC);
	void DrawNumbers(CDC& dc, int nInc, int nTPU);
	void DrawDiv(CDC& dc, int nInc, int nLargeDiv, int nLength);
	void DrawTabs(CDC& dc);
	void FillInParaFormat(PARAFORMAT& pf);
	void SortTabs();
	void SetMarginBounds();
	CRulerItem* GetFreeTab();
    CView* GetView()
    {
		ASSERT(GetParent() != NULL);
		return ((CFrameWnd*)GetParent())->GetActiveView();
	}
	CDocument* GetDocument() { return GetView()->GetDocument(); }

	CTabRulerItem* GetHitTabPix(CPoint pt);

	// Generated message map functions
	//{{AFX_MSG(CRulerBar)
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnSysColorChange();
	afx_msg void OnWindowPosChanging(WINDOWPOS FAR* lpwndpos);
	afx_msg void OnShowWindow(BOOL bShow, UINT nStatus);
	afx_msg void OnWindowPosChanged(WINDOWPOS FAR* lpwndpos);
	//}}AFX_MSG
	afx_msg LRESULT OnSizeParent(WPARAM wParam, LPARAM lParam);
	DECLARE_MESSAGE_MAP()
	
	friend class CRulerItem;
};

inline int CRulerItem::GetHorzPosPix()
	{ return m_pRuler->XTwipsToRuler(m_nXPosTwips); }

#endif
