ccrystaleditview.cpp

一个类似VB代码编辑器.通过一个多文档模板导出

// CrystalEditView.cpp : implementation of the CCrystalEditView class
//

#include "stdafx.h"


#include "MALLOC.H"
#include "CCrystalEditView.h"
#include "ATLCONV.H"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCrystalEditView

IMPLEMENT_DYNCREATE(CCrystalEditView, CRichEditView)

BEGIN_MESSAGE_MAP(CCrystalEditView, CRichEditView)
	//{{AFX_MSG_MAP(CCrystalEditView)
	ON_WM_CHAR()
	ON_WM_DESTROY()
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CRichEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CRichEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CRichEditView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCrystalEditView construction/destruction

CCrystalEditView::CCrystalEditView()
{
	m_nTopLine = 0;
	m_nOffsetChar = 0;
	m_nLineHeight = -1;
	m_nCharWidth = -1;
	m_nTabSize = 4;
	m_nMaxLineLength = -1;
	m_nScreenLines = -1;
	m_nScreenChars = -1;
	m_nIdealCharPos = -1;
	m_ptAnchor.x = 0;
	m_ptAnchor.y = 0;

/*	for (int I = 0; I < 4; I ++)
	{
		if (m_apFonts[I] != NULL)
		{
			m_apFonts[I]->DeleteObject();
			delete m_apFonts[I];
			m_apFonts[I] = NULL;
		}
	}*/
	if (m_pdwParseCookies != NULL)
	{
		delete m_pdwParseCookies;
		m_pdwParseCookies = NULL;
	}
	if (m_pnActualLineLength != NULL)
	{
		delete m_pnActualLineLength;
		m_pnActualLineLength = NULL;
	}
	m_nParseArraySize = 0;
	m_nActualLengthArraySize = 0;
	m_ptCursorPos.x = 0;
	m_ptCursorPos.y = 0;
	m_ptSelStart = m_ptSelEnd = m_ptCursorPos;
	m_bDragSelection = FALSE;
	m_bVertScrollBarLocked = FALSE;
	m_bHorzScrollBarLocked = FALSE;
	if (::IsWindow(m_hWnd))
		UpdateCaret();
	m_bLastSearch = FALSE;
	m_bShowInactiveSelection = FALSE;
	m_bPrintHeader = FALSE;
	m_bPrintFooter = TRUE;

	m_bBookmarkExist  = FALSE;	// More bookmarks
	m_bMultipleSearch = FALSE;	// More search

}

CCrystalEditView::~CCrystalEditView()
{
}

BOOL CCrystalEditView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CRichEditView::PreCreateWindow(cs);
}

void CCrystalEditView::OnInitialUpdate()
{
	CRichEditView::OnInitialUpdate();
	//------------------格式控制
	SIZE size;
    GetTextExtentPoint(GetDC()->GetSafeHdc (),"A",1,&size);
	m_LineHeight = size.cy;
	CRichEditCtrl& theEdit = GetRichEditCtrl();
	theEdit.LimitText(100000);     //10万行代码
	PARAFORMAT pf;
	theEdit.GetParaFormat(pf);
    pf.cbSize = sizeof(PARAFORMAT2);
    pf.dwMask = PFM_NUMBERING | PFM_OFFSET;
    pf.wNumbering = PFN_BULLET;//注意PFM_NUMBERING 
	pf.dxStartIndent =-20;

    pf.dxOffset = 10;
	theEdit.SetParaFormat(pf);
	//------------------
	AttachToBuffer(NULL);
    CSplitterWnd *pSplitter = GetParentSplitter(this, FALSE);
	if (pSplitter != NULL)
	{
		//	See CSplitterWnd::IdFromRowCol() implementation
		int nRow = (GetDlgCtrlID() - AFX_IDW_PANE_FIRST) / 16;
		int nCol = (GetDlgCtrlID() - AFX_IDW_PANE_FIRST) % 16;
		ASSERT(nRow >= 0 && nRow < pSplitter->GetRowCount());
		ASSERT(nCol >= 0 && nCol < pSplitter->GetColumnCount());

		if (nRow > 0)
		{
			CCrystalEditView *pSiblingView = GetSiblingView(0, nCol);
			if (pSiblingView != NULL && pSiblingView != this)
			{
				m_nOffsetChar = pSiblingView->m_nOffsetChar;
				ASSERT(m_nOffsetChar >= 0 && m_nOffsetChar <= GetMaxLineLength());
			}
		}

		if (nCol > 0)
		{
			CCrystalEditView *pSiblingView = GetSiblingView(nRow, 0);
			if (pSiblingView != NULL && pSiblingView != this)
			{
				m_nTopLine = pSiblingView->m_nTopLine;
				ASSERT(m_nTopLine >= 0 && m_nTopLine < GetLineCount());
			}
		}
	}
	// Set the printing margins (720 twips = 1/2 inch).
//	SetMargins(CRect(10, 10, 10, 10));
}

/////////////////////////////////////////////////////////////////////////////
// CCrystalEditView printing

BOOL CCrystalEditView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CCrystalEditView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	if ((::GetAsyncKeyState(VK_LBUTTON) & 0x8000) != 0 ||
		(::GetAsyncKeyState(VK_RBUTTON) & 0x8000) != 0)
		return;
	
	BOOL bTranslated = FALSE;
	if (nChar == VK_RETURN)
	{
		if (m_bOvrMode)
		{
			CPoint ptCursorPos = GetCursorPos();
			if (ptCursorPos.y < GetLineCount() - 1)
			{
				ptCursorPos.x = 0;
				ptCursorPos.y++;


				SetSelection(ptCursorPos, ptCursorPos);
				SetAnchor(ptCursorPos);
				SetCursorPos(ptCursorPos);
				EnsureVisible(ptCursorPos);
				return;
			}
		}

		m_pTextBuffer->BeginUndoGroup();

		if (QueryEditable() && m_pTextBuffer != NULL)
		{
			DeleteCurrentSelection();

			CPoint ptCursorPos = GetCursorPos();

			const static TCHAR pszText[3] = _T("\r\n");

			int x, y;
			m_pTextBuffer->InsertText(this, ptCursorPos.y, ptCursorPos.x, pszText, y, x, CE_ACTION_TYPING); //	[JRT]
			ptCursorPos.x = x;
			ptCursorPos.y = y;

			SetSelection(ptCursorPos, ptCursorPos);
			SetAnchor(ptCursorPos);
			SetCursorPos(ptCursorPos);
			EnsureVisible(ptCursorPos);
		}
		m_pTextBuffer->FlushUndoGroup(this);
		return;
	}
	if (nChar > 31)
	{
		if (QueryEditable() && m_pTextBuffer != NULL)
		{
			m_pTextBuffer->BeginUndoGroup(nChar != _T(' '));

			CPoint ptSelStart, ptSelEnd;
			GetSelection(ptSelStart, ptSelEnd);
			CPoint ptCursorPos;
			if (ptSelStart != ptSelEnd)
			{
				ptCursorPos = ptSelStart;
				DeleteCurrentSelection();
			}
			else
			{
				ptCursorPos = GetCursorPos();
				if (m_bOvrMode && ptCursorPos.x < GetLineLength(ptCursorPos.y))
					m_pTextBuffer->DeleteText(this, ptCursorPos.y, ptCursorPos.x, ptCursorPos.y, ptCursorPos.x + 1, CE_ACTION_TYPING); // [JRT]
			}

			char pszText[2];
			pszText[0] = (char) nChar;
			pszText[1] = 0;

			int x, y;
			USES_CONVERSION;
			m_pTextBuffer->InsertText(this, ptCursorPos.y, ptCursorPos.x, A2T(pszText), y, x, CE_ACTION_TYPING); // [JRT]
			ptCursorPos.x = x;
			ptCursorPos.y = y;
			SetSelection(ptCursorPos, ptCursorPos);
			SetAnchor(ptCursorPos);
			SetCursorPos(ptCursorPos);
			EnsureVisible(ptCursorPos);

			m_pTextBuffer->FlushUndoGroup(this);
		}
	}
	CRichEditView::OnChar(nChar, nRepCnt, nFlags);
}
CPoint CCrystalEditView::GetCursorPos()
{
	return m_ptCursorPos;
}
int CCrystalEditView::GetLineCount()
{
	if (m_pTextBuffer == NULL)
		return 1;		//	Single empty line
	int nLineCount = m_pTextBuffer->GetLineCount();
	ASSERT(nLineCount > 0);
	return nLineCount;
}
void CCrystalEditView::UpdateCaret()
{

}
BOOL CCrystalEditView::DeleteCurrentSelection()
{
	if (IsSelection())
	{
		CPoint ptSelStart, ptSelEnd;
		GetSelection(ptSelStart, ptSelEnd);

		CPoint ptCursorPos = ptSelStart;

		SetAnchor(ptCursorPos);
		SetSelection(ptCursorPos, ptCursorPos);
		SetCursorPos(ptCursorPos);
		EnsureVisible(ptCursorPos);

		// [JRT]:
		m_pTextBuffer->DeleteText(this, ptSelStart.y, ptSelStart.x, ptSelEnd.y, ptSelEnd.x, CE_ACTION_DELSEL);
		return TRUE;
	}
	return FALSE;
}
void CCrystalEditView::GetSelection(CPoint &ptStart, CPoint &ptEnd)
{
	PrepareSelBounds();
	ptStart = m_ptDrawSelStart;
	ptEnd = m_ptDrawSelEnd;
}
void CCrystalEditView::PrepareSelBounds()
{
	if (m_ptSelStart.y < m_ptSelEnd.y ||
			(m_ptSelStart.y == m_ptSelEnd.y && m_ptSelStart.x < m_ptSelEnd.x))
	{
		m_ptDrawSelStart = m_ptSelStart;
		m_ptDrawSelEnd = m_ptSelEnd;
	}
	else
	{
		m_ptDrawSelStart = m_ptSelEnd;
		m_ptDrawSelEnd = m_ptSelStart;
	}
}
BOOL CCrystalEditView::QueryEditable()
{
	if (m_pTextBuffer == NULL)
		return FALSE;
	return ! m_pTextBuffer->GetReadOnly();
}
void CCrystalEditView::EnsureVisible(CPoint pt)
{
	//	Scroll vertically
	int nLineCount = GetLineCount();
	int nNewTopLine = m_nTopLine;
	if (pt.y >= nNewTopLine + GetScreenLines())
	{
		nNewTopLine = pt.y - GetScreenLines() + 1;
	}
	if (pt.y < nNewTopLine)
	{
		nNewTopLine = pt.y;
	}

	if (nNewTopLine < 0)
		nNewTopLine = 0;
	if (nNewTopLine >= nLineCount)
		nNewTopLine = nLineCount - 1;

	if (m_nTopLine != nNewTopLine)
	{
		ScrollToLine(nNewTopLine);
		UpdateSiblingScrollPos(TRUE);
	}

	//	Scroll horizontally
	int nActualPos = CalculateActualOffset(pt.y, pt.x);
	int nNewOffset = m_nOffsetChar;
	if (nActualPos > nNewOffset + GetScreenChars())
	{
		nNewOffset = nActualPos - GetScreenChars();
	}
	if (nActualPos < nNewOffset)
	{
		nNewOffset = nActualPos;
	}

	if (nNewOffset >= GetMaxLineLength())
		nNewOffset = GetMaxLineLength() - 1;
	if (nNewOffset < 0)
		nNewOffset = 0;

	if (m_nOffsetChar != nNewOffset)
	{
		ScrollToChar(nNewOffset);
		UpdateCaret();
		UpdateSiblingScrollPos(FALSE);
	}
}
int CCrystalEditView::GetScreenLines()
{
	if (m_nScreenLines == -1)
	{
		CRect rect;
		GetClientRect(&rect);
		m_nScreenLines = rect.Height() / GetLineHeight();
	}
	return m_nScreenLines;
}
void CCrystalEditView::ScrollToLine(int nNewTopLine, BOOL bNoSmoothScroll /*= FALSE*/, BOOL bTrackScrollBar /*= TRUE*/)
{
	if (m_nTopLine != nNewTopLine)
	{
		if (bNoSmoothScroll || ! m_bSmoothScroll)
		{
			int nScrollLines = m_nTopLine - nNewTopLine;
			m_nTopLine = nNewTopLine;
			ScrollWindow(0, nScrollLines * GetLineHeight());
			UpdateWindow();
			if (bTrackScrollBar)
				RecalcVertScrollBar(TRUE);
		}
		else
		{
			//	Do smooth scrolling
			int nLineHeight = GetLineHeight();
			if (m_nTopLine > nNewTopLine)
			{
				int nIncrement = (m_nTopLine - nNewTopLine) / SMOOTH_SCROLL_FACTOR + 1;
				while (m_nTopLine != nNewTopLine)
				{
					int nTopLine = m_nTopLine - nIncrement;
					if (nTopLine < nNewTopLine)
						nTopLine = nNewTopLine;
					int nScrollLines = nTopLine - m_nTopLine;
					m_nTopLine = nTopLine;
					ScrollWindow(0, - nLineHeight * nScrollLines);
					UpdateWindow();
					if (bTrackScrollBar)
						RecalcVertScrollBar(TRUE);
				}
			}
			else
			{
				int nIncrement = (nNewTopLine - m_nTopLine) / SMOOTH_SCROLL_FACTOR + 1;
				while (m_nTopLine != nNewTopLine)
				{
					int nTopLine = m_nTopLine + nIncrement;
					if (nTopLine > nNewTopLine)
						nTopLine = nNewTopLine;
					int nScrollLines = nTopLine - m_nTopLine;
					m_nTopLine = nTopLine;
					ScrollWindow(0, - nLineHeight * nScrollLines);
					UpdateWindow();
					if (bTrackScrollBar)
						RecalcVertScrollBar(TRUE);
				}
			}
		}
	}
}
void CCrystalEditView::UpdateSiblingScrollPos(BOOL bHorz)
{
	CSplitterWnd *pSplitterWnd = GetParentSplitter(this, FALSE);
	if (pSplitterWnd != NULL)
	{
		//	See CSplitterWnd::IdFromRowCol() implementation for details
		int nCurrentRow = (GetDlgCtrlID() - AFX_IDW_PANE_FIRST) / 16;
		int nCurrentCol = (GetDlgCtrlID() - AFX_IDW_PANE_FIRST) % 16;
		ASSERT(nCurrentRow >= 0 && nCurrentRow < pSplitterWnd->GetRowCount());
		ASSERT(nCurrentCol >= 0 && nCurrentCol < pSplitterWnd->GetColumnCount());

		if (bHorz)
		{
			int nCols = pSplitterWnd->GetColumnCount();
			for (int nCol = 0; nCol < nCols; nCol ++)
			{
				if (nCol != nCurrentCol)	//	We don't need to update ourselves
				{
					CCrystalEditView *pSiblingView = GetSiblingView(nCurrentRow, nCol);
					if (pSiblingView != NULL)
						pSiblingView->OnUpdateSibling(this, TRUE);
				}
			}
		}
		else
		{