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CCrystalTextView.cpp
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////////////////////////////////////////////////////////////////////////////
// File: CCrystalTextView.cpp
// Version: 1.0.0.0
// Created: 29-Dec-1998
//
// Author: Stcherbatchenko Andrei
// E-mail: [email protected]
//
// Implementation of the CCrystalTextView class, a part of Crystal Edit -
// syntax coloring text editor.
//
// You are free to use or modify this code to the following restrictions:
// - Acknowledge me somewhere in your about box, simple "Parts of code by.."
// will be enough. If you can't (or don't want to), contact me personally.
// - LEAVE THIS HEADER INTACT
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
// 17-Feb-99
// FIX: missing UpdateCaret() in CCrystalTextView::SetFont
// FIX: missing UpdateCaret() in CCrystalTextView::RecalcVertScrollBar
// FIX: mistype in CCrystalTextView::RecalcPageLayouts + instead of +=
// FIX: removed condition 'm_nLineHeight < 20' in
// CCrystalTextView::CalcLineCharDim(). This caused painting defects
// when using very small fonts.
//
// FEATURE: Some experiments with smooth scrolling, controlled by
// m_bSmoothScroll member variable, by default turned off.
// See ScrollToLine function for implementation details.
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
// 21-Feb-99
// Paul Selormey, James R. Twine
// + FEATURE: description for Undo/Redo actions
// + FEATURE: multiple MSVC-like bookmarks
// + FEATURE: 'Disable backspace at beginning of line' option
// + FEATURE: 'Disable drag-n-drop editing' option
//
// + FIX: ResetView() now virtual
// + FEATURE: Added OnEditOperation() virtual: base for auto-indent,
// smart indent etc.
////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include <malloc.h>
#include "editcmd.h"
#include "editreg.h"
#include "CCrystalTextView.h"
#include "CCrystalTextBuffer.h"
#include "CFindTextDlg.h"
#ifndef __AFXPRIV_H__
#pragma message("Include <afxpriv.h> in your stdafx.h to avoid this message")
#include <afxpriv.h>
#endif
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define TAB_CHARACTER _T('\xBB')
#define SPACE_CHARACTER _T('\x95')
#define DEFAULT_PRINT_MARGIN 1000 // 10 millimeters
#define SMOOTH_SCROLL_FACTOR 6
////////////////////////////////////////////////////////////////////////////
// CCrystalTextView
IMPLEMENT_DYNCREATE(CCrystalTextView, CView)
HINSTANCE CCrystalTextView::s_hResourceInst = NULL;
BEGIN_MESSAGE_MAP(CCrystalTextView, CView)
//{{AFX_MSG_MAP(CCrystalTextView)
ON_WM_DESTROY()
ON_WM_ERASEBKGND()
ON_WM_SIZE()
ON_WM_VSCROLL()
ON_WM_SETCURSOR()
ON_WM_LBUTTONDOWN()
ON_WM_SETFOCUS()
ON_WM_HSCROLL()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_TIMER()
ON_WM_KILLFOCUS()
ON_WM_LBUTTONDBLCLK()
ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
ON_COMMAND(ID_EDIT_SELECT_ALL, OnEditSelectAll)
ON_UPDATE_COMMAND_UI(ID_EDIT_SELECT_ALL, OnUpdateEditSelectAll)
ON_WM_RBUTTONDOWN()
ON_WM_SYSCOLORCHANGE()
ON_WM_CREATE()
ON_COMMAND(ID_EDIT_FIND, OnEditFind)
ON_COMMAND(ID_EDIT_REPEAT, OnEditRepeat)
ON_UPDATE_COMMAND_UI(ID_EDIT_REPEAT, OnUpdateEditRepeat)
ON_COMMAND(ID_EDIT_FIND_PREVIOUS, OnEditFindPrevious)
ON_UPDATE_COMMAND_UI(ID_EDIT_FIND_PREVIOUS, OnUpdateEditFindPrevious)
ON_WM_MOUSEWHEEL()
//}}AFX_MSG_MAP
ON_COMMAND(ID_EDIT_CHAR_LEFT, OnCharLeft)
ON_COMMAND(ID_EDIT_EXT_CHAR_LEFT, OnExtCharLeft)
ON_COMMAND(ID_EDIT_CHAR_RIGHT, OnCharRight)
ON_COMMAND(ID_EDIT_EXT_CHAR_RIGHT, OnExtCharRight)
ON_COMMAND(ID_EDIT_WORD_LEFT, OnWordLeft)
ON_COMMAND(ID_EDIT_EXT_WORD_LEFT, OnExtWordLeft)
ON_COMMAND(ID_EDIT_WORD_RIGHT, OnWordRight)
ON_COMMAND(ID_EDIT_EXT_WORD_RIGHT, OnExtWordRight)
ON_COMMAND(ID_EDIT_LINE_UP, OnLineUp)
ON_COMMAND(ID_EDIT_EXT_LINE_UP, OnExtLineUp)
ON_COMMAND(ID_EDIT_LINE_DOWN, OnLineDown)
ON_COMMAND(ID_EDIT_EXT_LINE_DOWN, OnExtLineDown)
ON_COMMAND(ID_EDIT_SCROLL_UP, ScrollUp)
ON_COMMAND(ID_EDIT_SCROLL_DOWN, ScrollDown)
ON_COMMAND(ID_EDIT_PAGE_UP, OnPageUp)
ON_COMMAND(ID_EDIT_EXT_PAGE_UP, OnExtPageUp)
ON_COMMAND(ID_EDIT_PAGE_DOWN, OnPageDown)
ON_COMMAND(ID_EDIT_EXT_PAGE_DOWN, OnExtPageDown)
ON_COMMAND(ID_EDIT_LINE_END, OnLineEnd)
ON_COMMAND(ID_EDIT_EXT_LINE_END, OnExtLineEnd)
ON_COMMAND(ID_EDIT_HOME, OnHome)
ON_COMMAND(ID_EDIT_EXT_HOME, OnExtHome)
ON_COMMAND(ID_EDIT_TEXT_BEGIN, OnTextBegin)
ON_COMMAND(ID_EDIT_EXT_TEXT_BEGIN, OnExtTextBegin)
ON_COMMAND(ID_EDIT_TEXT_END, OnTextEnd)
ON_COMMAND(ID_EDIT_EXT_TEXT_END, OnExtTextEnd)
// Standard printing commands
ON_COMMAND(ID_FILE_PAGE_SETUP, OnFilePageSetup)
ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
// Status
ON_UPDATE_COMMAND_UI(ID_EDIT_INDICATOR_CRLF, OnUpdateIndicatorCRLF)
ON_UPDATE_COMMAND_UI(ID_EDIT_INDICATOR_POSITION, OnUpdateIndicatorPosition)
// Bookmarks
ON_COMMAND_RANGE(ID_EDIT_TOGGLE_BOOKMARK0, ID_EDIT_TOGGLE_BOOKMARK9, OnToggleBookmark)
ON_COMMAND_RANGE(ID_EDIT_GO_BOOKMARK0, ID_EDIT_GO_BOOKMARK9, OnGoBookmark)
ON_COMMAND(ID_EDIT_CLEAR_BOOKMARKS, OnClearBookmarks)
// More Bookmarks
ON_COMMAND(ID_EDIT_TOGGLE_BOOKMARK, OnToggleBookmark)
ON_COMMAND(ID_EDIT_GOTO_NEXT_BOOKMARK, OnNextBookmark)
ON_COMMAND(ID_EDIT_GOTO_PREV_BOOKMARK, OnPrevBookmark)
ON_COMMAND(ID_EDIT_CLEAR_ALL_BOOKMARKS, OnClearAllBookmarks)
ON_UPDATE_COMMAND_UI(ID_EDIT_GOTO_NEXT_BOOKMARK, OnUpdateNextBookmark)
ON_UPDATE_COMMAND_UI(ID_EDIT_GOTO_PREV_BOOKMARK, OnUpdatePrevBookmark)
ON_UPDATE_COMMAND_UI(ID_EDIT_CLEAR_ALL_BOOKMARKS, OnUpdateClearAllBookmarks)
END_MESSAGE_MAP()
#define EXPAND_PRIMITIVE(impl, func) \
void CCrystalTextView::On##func() { impl(FALSE); } \
void CCrystalTextView::OnExt##func() { impl(TRUE); }
EXPAND_PRIMITIVE(MoveLeft, CharLeft)
EXPAND_PRIMITIVE(MoveRight, CharRight)
EXPAND_PRIMITIVE(MoveWordLeft, WordLeft)
EXPAND_PRIMITIVE(MoveWordRight, WordRight)
EXPAND_PRIMITIVE(MoveUp, LineUp)
EXPAND_PRIMITIVE(MoveDown, LineDown)
EXPAND_PRIMITIVE(MovePgUp, PageUp)
EXPAND_PRIMITIVE(MovePgDn, PageDown)
EXPAND_PRIMITIVE(MoveHome, Home)
EXPAND_PRIMITIVE(MoveEnd, LineEnd)
EXPAND_PRIMITIVE(MoveCtrlHome, TextBegin)
EXPAND_PRIMITIVE(MoveCtrlEnd, TextEnd)
#undef EXPAND_PRIMITIVE
/////////////////////////////////////////////////////////////////////////////
// CCrystalTextView construction/destruction
CCrystalTextView::CCrystalTextView()
{
AFX_ZERO_INIT_OBJECT(CView);
m_bSelMargin = TRUE;
ResetView();
}
CCrystalTextView::~CCrystalTextView()
{
ASSERT(m_hAccel == NULL);
ASSERT(m_pCacheBitmap == NULL);
ASSERT(m_pTextBuffer == NULL); // Must be correctly detached
if (m_pszLastFindWhat != NULL)
free(m_pszLastFindWhat);
if (m_pdwParseCookies != NULL)
delete m_pdwParseCookies;
if (m_pnActualLineLength != NULL)
delete m_pnActualLineLength;
}
BOOL CCrystalTextView::PreCreateWindow(CREATESTRUCT& cs)
{
CWnd *pParentWnd = CWnd::FromHandlePermanent(cs.hwndParent);
if (pParentWnd == NULL || ! pParentWnd->IsKindOf(RUNTIME_CLASS(CSplitterWnd)))
{
// View must always create its own scrollbars,
// if only it's not used within splitter
cs.style |= (WS_HSCROLL | WS_VSCROLL);
}
cs.lpszClass = AfxRegisterWndClass(CS_DBLCLKS);
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CCrystalTextView drawing
void CCrystalTextView::GetSelection(CPoint &ptStart, CPoint &ptEnd)
{
PrepareSelBounds();
ptStart = m_ptDrawSelStart;
ptEnd = m_ptDrawSelEnd;
}
CCrystalTextBuffer *CCrystalTextView::LocateTextBuffer()
{
return NULL;
}
int CCrystalTextView::GetLineActualLength(int nLineIndex)
{
int nLineCount = GetLineCount();
ASSERT(nLineCount > 0);
ASSERT(nLineIndex >= 0 && nLineIndex < nLineCount);
if (m_pnActualLineLength == NULL)
{
m_pnActualLineLength = new int[nLineCount];
memset(m_pnActualLineLength, 0xff, sizeof(int) * nLineCount);
m_nActualLengthArraySize = nLineCount;
}
if (m_pnActualLineLength[nLineIndex] >= 0)
return m_pnActualLineLength[nLineIndex];
// Actual line length is not determined yet, let's calculate a little
int nActualLength = 0;
int nLength = GetLineLength(nLineIndex);
if (nLength > 0)
{
LPCTSTR pszLine = GetLineChars(nLineIndex);
LPTSTR pszChars = (LPTSTR) _alloca(sizeof(TCHAR) * (nLength + 1));
memcpy(pszChars, pszLine, sizeof(TCHAR) * nLength);
pszChars[nLength] = 0;
LPTSTR pszCurrent = pszChars;
int nTabSize = GetTabSize();
for (;;)
{
#ifdef _UNICODE
LPTSTR psz = wcschr(pszCurrent, L'\t');
#else
LPTSTR psz = strchr(pszCurrent, '\t');
#endif
if (psz == NULL)
{
nActualLength += (pszChars + nLength - pszCurrent);
break;
}
nActualLength += (psz - pszCurrent);
nActualLength += (nTabSize - nActualLength % nTabSize);
pszCurrent = psz + 1;
}
}
m_pnActualLineLength[nLineIndex] = nActualLength;
return nActualLength;
}
void CCrystalTextView::ScrollToChar(int nNewOffsetChar, BOOL bNoSmoothScroll /*= FALSE*/, BOOL bTrackScrollBar /*= TRUE*/)
{
// For now, ignoring bNoSmoothScroll and m_bSmoothScroll
if (m_nOffsetChar != nNewOffsetChar)
{
int nScrollChars = m_nOffsetChar - nNewOffsetChar;
m_nOffsetChar = nNewOffsetChar;
CRect rcScroll;
GetClientRect(&rcScroll);
rcScroll.left += GetMarginWidth();
ScrollWindow(nScrollChars * GetCharWidth(), 0, &rcScroll, &rcScroll);
UpdateWindow();
if (bTrackScrollBar)
RecalcHorzScrollBar(TRUE);
}
}
void CCrystalTextView::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 CCrystalTextView::ExpandChars(LPCTSTR pszChars, int nOffset, int nCount, CString &line)
{
if (nCount <= 0)
{
line = _T("");
return;
}
int nTabSize = GetTabSize();
int nActualOffset = 0;
for (int I = 0; I < nOffset; I ++)
{
if (pszChars[I] == _T('\t'))
nActualOffset += (nTabSize - nActualOffset % nTabSize);
else
nActualOffset ++;
}
pszChars += nOffset;
int nLength = nCount;
int nTabCount = 0;
for (I = 0; I < nLength; I ++)
{
if (pszChars[I] == _T('\t'))
nTabCount ++;
}
LPTSTR pszBuf = line.GetBuffer(nLength + nTabCount * (nTabSize - 1) + 1);
int nCurPos = 0;
if (nTabCount > 0 || m_bViewTabs)
{
for (I = 0; I < nLength; I ++)
{
if (pszChars[I] == _T('\t'))
{
int nSpaces = nTabSize - (nActualOffset + nCurPos) % nTabSize;
if (m_bViewTabs)
{
pszBuf[nCurPos ++] = TAB_CHARACTER;
nSpaces --;
}
while (nSpaces > 0)
{
pszBuf[nCurPos ++] = _T(' ');
nSpaces --;
}
}
else
{
if (pszChars[I] == _T(' ') && m_bViewTabs)
pszBuf[nCurPos] = SPACE_CHARACTER;
else
pszBuf[nCurPos] = pszChars[I];
nCurPos ++;
}
}
}
else
{
memcpy(pszBuf, pszChars, sizeof(TCHAR) * nLength);
nCurPos = nLength;
}
pszBuf[nCurPos] = 0;
line.ReleaseBuffer();
}
void CCrystalTextView::DrawLineHelperImpl(CDC *pdc, CPoint &ptOrigin, const CRect &rcClip,
LPCTSTR pszChars, int nOffset, int nCount)
{
ASSERT(nCount >= 0);
if (nCount > 0)
{
CString line;
ExpandChars(pszChars, nOffset, nCount, line);
int nWidth = rcClip.right - ptOrigin.x;
if (nWidth > 0)
{
int nCharWidth = GetCharWidth();
int nCount = line.GetLength();
int nCountFit = nWidth / nCharWidth + 1;
if (nCount > nCountFit)
nCount = nCountFit;
#ifdef _DEBUG
//CSize sz = pdc->GetTextExtent(line, nCount);
//ASSERT(sz.cx == m_nCharWidth * nCount);
#endif
/*
CRect rcBounds = rcClip;
rcBounds.left = ptOrigin.x;
rcBounds.right = rcBounds.left + GetCharWidth() * nCount;
pdc->ExtTextOut(rcBounds.left, rcBounds.top, ETO_OPAQUE, &rcBounds, NULL, 0, NULL);
*/
VERIFY(pdc->ExtTextOut(ptOrigin.x, ptOrigin.y, ETO_CLIPPED, &rcClip, line, nCount, NULL));
}
ptOrigin.x += GetCharWidth() * line.GetLength();
}
}
void CCrystalTextView::DrawLineHelper(CDC *pdc, CPoint &ptOrigin, const CRect &rcClip, int nColorIndex,
LPCTSTR pszChars, int nOffset, int nCount, CPoint ptTextPos)
{
if (nCount > 0)
{
if (m_bFocused || m_bShowInactiveSelection)
{
int nSelBegin = 0, nSelEnd = 0;
if (m_ptDrawSelStart.y > ptTextPos.y)
{
nSelBegin = nCount;
}
else
if (m_ptDrawSelStart.y == ptTextPos.y)
{
nSelBegin = m_ptDrawSelStart.x - ptTextPos.x;
if (nSelBegin < 0)
nSelBegin = 0;
if (nSelBegin > nCount)
nSelBegin = nCount;
}
if (m_ptDrawSelEnd.y > ptTextPos.y)
{
nSelEnd = nCount;
}
else
if (m_ptDrawSelEnd.y == ptTextPos.y)
{
nSelEnd = m_ptDrawSelEnd.x - ptTextPos.x;
if (nSelEnd < 0)
nSelEnd = 0;
if (nSelEnd > nCount)
nSelEnd = nCount;
}
ASSERT(nSelBegin >= 0 && nSelBegin <= nCount);
ASSERT(nSelEnd >= 0 && nSelEnd <= nCount);
ASSERT(nSelBegin <= nSelEnd);
// Draw part of the text before selection
if (nSelBegin > 0)
{
DrawLineHelperImpl(pdc, ptOrigin, rcClip, pszChars, nOffset, nSelBegin);
}
if (nSelBegin < nSelEnd)
{
COLORREF crOldBk = pdc->SetBkColor(GetColor(COLORINDEX_SELBKGND));
COLORREF crOldText = pdc->SetTextColor(GetColor(COLORINDEX_SELTEXT));
DrawLineHelperImpl(pdc, ptOrigin, rcClip, pszChars, nOffset + nSelBegin, nSelEnd - nSelBegin);
pdc->SetBkColor(crOldBk);
pdc->SetTextColor(crOldText);
}
if (nSelEnd < nCount)
{
DrawLineHelperImpl(pdc, ptOrigin, rcClip, pszChars, nOffset + nSelEnd, nCount - nSelEnd);
}
}
else
{
DrawLineHelperImpl(pdc, ptOrigin, rcClip, pszChars, nOffset, nCount);
}
}
}
void CCrystalTextView::GetLineColors(int nLineIndex, COLORREF &crBkgnd,
COLORREF &crText, BOOL &bDrawWhitespace)
{
DWORD dwLineFlags = GetLineFlags(nLineIndex);
bDrawWhitespace = TRUE;
crText = RGB(255, 255, 255);
if (dwLineFlags & LF_EXECUTION)
{
crBkgnd = RGB(0, 128, 0);
return;
}
if (dwLineFlags & LF_BREAKPOINT)
{
crBkgnd = RGB(255, 0, 0);
return;
}
if (dwLineFlags & LF_INVALID_BREAKPOINT)
{
crBkgnd = RGB(128, 128, 0);
return;
}
crBkgnd = CLR_NONE;
crText = CLR_NONE;
bDrawWhitespace = FALSE;
}
DWORD CCrystalTextView::GetParseCookie(int nLineIndex)
{
int nLineCount = GetLineCount();
if (m_pdwParseCookies == NULL)
{
m_nParseArraySize = nLineCount;
m_pdwParseCookies = new DWORD[nLineCount];
memset(m_pdwParseCookies, 0xff, nLineCount * sizeof(DWORD));
}
if (nLineIndex < 0)
return 0;
if (m_pdwParseCookies[nLineIndex] != (DWORD) -1)
return m_pdwParseCookies[nLineIndex];
int L = nLineIndex;
while (L >= 0 && m_pdwParseCookies[L] == (DWORD) -1)
L --;
L ++;
int nBlocks;
while (L <= nLineIndex)
{
DWORD dwCookie = 0;
if (L > 0)
dwCookie = m_pdwParseCookies[L - 1];
ASSERT(dwCookie != (DWORD) -1);
m_pdwParseCookies[L] = ParseLine(dwCookie, L, NULL, nBlocks);
ASSERT(m_pdwParseCookies[L] != (DWORD) -1);
L ++;
}
return m_pdwParseCookies[nLineIndex];
}
void CCrystalTextView::DrawSingleLine(CDC *pdc, const CRect &rc, int nLineIndex)
{
ASSERT(nLineIndex >= -1 && nLineIndex < GetLineCount());
if (nLineIndex == -1)
{
// Draw line beyond the text
pdc->FillSolidRect(rc, GetColor(COLORINDEX_WHITESPACE));
return;
}
// Acquire the background color for the current line
BOOL bDrawWhitespace = FALSE;
COLORREF crBkgnd, crText;
GetLineColors(nLineIndex, crBkgnd, crText, bDrawWhitespace);
if (crBkgnd == CLR_NONE)
crBkgnd = GetColor(COLORINDEX_BKGND);
int nLength = GetLineLength(nLineIndex);
if (nLength == 0)
{
// Draw the empty line
CRect rect = rc;
if ((m_bFocused || m_bShowInactiveSelection) && IsInsideSelBlock(CPoint(0, nLineIndex)))
{
pdc->FillSolidRect(rect.left, rect.top, GetCharWidth(), rect.Height(), GetColor(COLORINDEX_SELBKGND));
rect.left += GetCharWidth();
}
pdc->FillSolidRect(rect, bDrawWhitespace ? crBkgnd : GetColor(COLORINDEX_WHITESPACE));
return;
}
// Parse the line
LPCTSTR pszChars = GetLineChars(nLineIndex);
DWORD dwCookie = GetParseCookie(nLineIndex - 1);
TEXTBLOCK *pBuf = (TEXTBLOCK *) _alloca(sizeof(TEXTBLOCK) * nLength * 3);
int nBlocks = 0;
m_pdwParseCookies[nLineIndex] = ParseLine(dwCookie, nLineIndex, pBuf, nBlocks);
ASSERT(m_pdwParseCookies[nLineIndex] != (DWORD) -1);
// Draw the line text
CPoint origin(rc.left - m_nOffsetChar * GetCharWidth(), rc.top);
pdc->SetBkColor(crBkgnd);
if (crText != CLR_NONE)
pdc->SetTextColor(crText);
BOOL bColorSet = FALSE;
if (nBlocks > 0)
{
ASSERT(pBuf[0].m_nCharPos >= 0 && pBuf[0].m_nCharPos <= nLength);
if (crText == CLR_NONE)
pdc->SetTextColor(GetColor(COLORINDEX_NORMALTEXT));
pdc->SelectObject(GetFont(GetItalic(COLORINDEX_NORMALTEXT), GetBold(COLORINDEX_NORMALTEXT)));
DrawLineHelper(pdc, origin, rc, COLORINDEX_NORMALTEXT, pszChars, 0, pBuf[0].m_nCharPos, CPoint(0, nLineIndex));
for (int I = 0; I < nBlocks - 1; I ++)
{
ASSERT(pBuf[I].m_nCharPos >= 0 && pBuf[I].m_nCharPos <= nLength);
if (crText == CLR_NONE)
pdc->SetTextColor(GetColor(pBuf[I].m_nColorIndex));
pdc->SelectObject(GetFont(GetItalic(pBuf[I].m_nColorIndex), GetBold(pBuf[I].m_nColorIndex)));
DrawLineHelper(pdc, origin, rc, pBuf[I].m_nColorIndex, pszChars,
pBuf[I].m_nCharPos, pBuf[I + 1].m_nCharPos - pBuf[I].m_nCharPos,
CPoint(pBuf[I].m_nCharPos, nLineIndex));
}
ASSERT(pBuf[nBlocks - 1].m_nCharPos >= 0 && pBuf[nBlocks - 1].m_nCharPos <= nLength);
if (crText == CLR_NONE)
pdc->SetTextColor(GetColor(pBuf[nBlocks - 1].m_nColorIndex));
pdc->SelectObject(GetFont(GetItalic(pBuf[nBlocks - 1].m_nColorIndex),
GetBold(pBuf[nBlocks - 1].m_nColorIndex)));
DrawLineHelper(pdc, origin, rc, pBuf[nBlocks - 1].m_nColorIndex, pszChars,
pBuf[nBlocks - 1].m_nCharPos, nLength - pBuf[nBlocks - 1].m_nCharPos,
CPoint(pBuf[nBlocks - 1].m_nCharPos, nLineIndex));
}
else
{
if (crText == CLR_NONE)
pdc->SetTextColor(GetColor(COLORINDEX_NORMALTEXT));
pdc->SelectObject(GetFont(GetItalic(COLORINDEX_NORMALTEXT), GetBold(COLORINDEX_NORMALTEXT)));
DrawLineHelper(pdc, origin, rc, COLORINDEX_NORMALTEXT, pszChars, 0, nLength, CPoint(0, nLineIndex));
}
// Draw whitespaces to the left of the text
CRect frect = rc;
if (origin.x > frect.left)
frect.left = origin.x;
if (frect.right > frect.left)
{
if ((m_bFocused || m_bShowInactiveSelection) && IsInsideSelBlock(CPoint(nLength, nLineIndex)))
{
pdc->FillSolidRect(frect.left, frect.top, GetCharWidth(), frect.Height(),
GetColor(COLORINDEX_SELBKGND));
frect.left += GetCharWidth();
}
if (frect.right > frect.left)
pdc->FillSolidRect(frect, bDrawWhitespace ? crBkgnd : GetColor(COLORINDEX_WHITESPACE));
}
}
COLORREF CCrystalTextView::GetColor(int nColorIndex)
{
switch (nColorIndex)
{
case COLORINDEX_WHITESPACE:
case COLORINDEX_BKGND:
return ::GetSysColor(COLOR_WINDOW);
case COLORINDEX_NORMALTEXT:
return ::GetSysColor(COLOR_WINDOWTEXT);
case COLORINDEX_SELMARGIN:
return ::GetSysColor(COLOR_SCROLLBAR);
case COLORINDEX_PREPROCESSOR:
return RGB(0, 128, 192);
case COLORINDEX_COMMENT:
//return RGB(128, 128, 128);
return RGB(0, 128, 0);
// [JRT]: Enabled Support For Numbers...
case COLORINDEX_NUMBER:
return RGB(0x00, 0x00, 0xFF);
//return RGB(0xFF, 0x00, 0x00);
// [JRT]: Support For C/C++ Operators
case COLORINDEX_OPERATOR:
return RGB(0x00, 0x00, 0x00);
case COLORINDEX_KEYWORD:
return RGB(255, 0, 0);
//return RGB(0x00, 0x00, 0xFF);
case COLORINDEX_SELBKGND:
//return RGB(0, 0, 0);
//return RGB(200, 250, 250);
return RGB(180, 225, 225);
case COLORINDEX_SELTEXT:
//return RGB(255, 255, 255);
return RGB(0, 0, 0);
}
return RGB(255, 0, 0);
}
DWORD CCrystalTextView::GetLineFlags(int nLineIndex)
{
if (m_pTextBuffer == NULL)
return 0;
return m_pTextBuffer->GetLineFlags(nLineIndex);
}
void CCrystalTextView::DrawMargin(CDC *pdc, const CRect &rect, int nLineIndex)
{
if (! m_bSelMargin)
{
pdc->FillSolidRect(rect, GetColor(COLORINDEX_BKGND));
return;
}
pdc->FillSolidRect(rect, GetColor(COLORINDEX_SELMARGIN));
int nImageIndex = -1;
if (nLineIndex >= 0)
{
DWORD dwLineFlags = GetLineFlags(nLineIndex);
static const DWORD adwFlags[] =
{
LF_EXECUTION,
LF_BREAKPOINT,
LF_COMPILATION_ERROR,
LF_BOOKMARK(1),
LF_BOOKMARK(2),
LF_BOOKMARK(3),
LF_BOOKMARK(4),
LF_BOOKMARK(5),
LF_BOOKMARK(6),
LF_BOOKMARK(7),
LF_BOOKMARK(8),
LF_BOOKMARK(9),
LF_BOOKMARK(0),
LF_BOOKMARKS,
LF_INVALID_BREAKPOINT
};
for (int I = 0; I <= sizeof(adwFlags) / sizeof(adwFlags[0]); I ++)
{
if ((dwLineFlags & adwFlags[I]) != 0)
{
nImageIndex = I;
break;
}
}
}
if (nImageIndex >= 0)
{
if (m_pIcons == NULL)
{
m_pIcons = new CImageList;
VERIFY(m_pIcons->Create(IDR_MARGIN_ICONS, 16, 16, RGB(255, 255, 255)));
}
CPoint pt(rect.left + 2, rect.top + (rect.Height() - 16) / 2);
VERIFY(m_pIcons->Draw(pdc, nImageIndex, pt, ILD_TRANSPARENT));
}
}
BOOL CCrystalTextView::IsInsideSelBlock(CPoint ptTextPos)
{
ASSERT_VALIDTEXTPOS(ptTextPos);
if (ptTextPos.y < m_ptDrawSelStart.y)
return FALSE;
if (ptTextPos.y > m_ptDrawSelEnd.y)
return FALSE;
if (ptTextPos.y < m_ptDrawSelEnd.y && ptTextPos.y > m_ptDrawSelStart.y)
return TRUE;
if (m_ptDrawSelStart.y < m_ptDrawSelEnd.y)
{
if (ptTextPos.y == m_ptDrawSelEnd.y)
return ptTextPos.x < m_ptDrawSelEnd.x;
ASSERT(ptTextPos.y == m_ptDrawSelStart.y);
return ptTextPos.x >= m_ptDrawSelStart.x;
}
ASSERT(m_ptDrawSelStart.y == m_ptDrawSelEnd.y);
return ptTextPos.x >= m_ptDrawSelStart.x && ptTextPos.x < m_ptDrawSelEnd.x;
}
BOOL CCrystalTextView::IsInsideSelection(const CPoint &ptTextPos)
{
PrepareSelBounds();
return IsInsideSelBlock(ptTextPos);
}
void CCrystalTextView::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;
}
}
void CCrystalTextView::OnDraw(CDC *pdc)
{
CRect rcClient;
GetClientRect(rcClient);
int nLineCount = GetLineCount();
int nLineHeight = GetLineHeight();
PrepareSelBounds();
CDC cacheDC;
VERIFY(cacheDC.CreateCompatibleDC(pdc));
if (m_pCacheBitmap == NULL)
{
m_pCacheBitmap = new CBitmap;
VERIFY(m_pCacheBitmap->CreateCompatibleBitmap(pdc, rcClient.Width(), nLineHeight));
}
CBitmap *pOldBitmap = cacheDC.SelectObject(m_pCacheBitmap);
CRect rcLine;
rcLine = rcClient;
rcLine.bottom = rcLine.top + nLineHeight;
CRect rcCacheMargin(0, 0, GetMarginWidth(), nLineHeight);
CRect rcCacheLine(GetMarginWidth(), 0, rcLine.Width(), nLineHeight);
int nCurrentLine = m_nTopLine;
while (rcLine.top < rcClient.bottom)
{
if (nCurrentLine < nLineCount)
{
DrawMargin(&cacheDC, rcCacheMargin, nCurrentLine);
DrawSingleLine(&cacheDC, rcCacheLine, nCurrentLine);
}
else
{
DrawMargin(&cacheDC, rcCacheMargin, -1);
DrawSingleLine(&cacheDC, rcCacheLine, -1);
}
VERIFY(pdc->BitBlt(rcLine.left, rcLine.top, rcLine.Width(), rcLine.Height(), &cacheDC, 0, 0, SRCCOPY));
nCurrentLine ++;
rcLine.OffsetRect(0, nLineHeight);
}
cacheDC.SelectObject(pOldBitmap);
cacheDC.DeleteDC();
}
void CCrystalTextView::ResetView()
{
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;
if (m_pIcons != NULL)
{
delete m_pIcons;
m_pIcons = NULL;
}
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
}
void CCrystalTextView::UpdateCaret()
{
ASSERT_VALIDTEXTPOS(m_ptCursorPos);
if (m_bFocused && ! m_bCursorHidden &&
CalculateActualOffset(m_ptCursorPos.y, m_ptCursorPos.x) >= m_nOffsetChar)
{
CreateSolidCaret(2, GetLineHeight());
SetCaretPos(TextToClient(m_ptCursorPos));
ShowCaret();
}
else
{
HideCaret();
}
}
int CCrystalTextView::GetTabSize()
{
ASSERT(m_nTabSize >= 0 && m_nTabSize <= 64);
return m_nTabSize;
}
void CCrystalTextView::SetTabSize(int nTabSize)
{
ASSERT(nTabSize >= 0 && nTabSize <= 64);
if (m_nTabSize != nTabSize)
{
m_nTabSize = nTabSize;
if (m_pnActualLineLength != NULL)
{
delete m_pnActualLineLength;
m_pnActualLineLength = NULL;
}
m_nActualLengthArraySize = 0;
m_nMaxLineLength = -1;
RecalcHorzScrollBar();
Invalidate();
UpdateCaret();
}
}
CFont *CCrystalTextView::GetFont(BOOL bItalic /*= FALSE*/, BOOL bBold /*= FALSE*/)
{
int nIndex = 0;
if (bBold)
nIndex |= 1;
if (bItalic)
nIndex |= 2;
if (m_apFonts[nIndex] == NULL)
{
m_apFonts[nIndex] = new CFont;
m_lfBaseFont.lfWeight = bBold ? FW_BOLD : FW_NORMAL;
m_lfBaseFont.lfItalic = (BYTE) bItalic;
if (! m_apFonts[nIndex]->CreateFontIndirect(&m_lfBaseFont))
{
delete m_apFonts[nIndex];
m_apFonts[nIndex] = NULL;
return CView::GetFont();
}
}
return m_apFonts[nIndex];
}
void CCrystalTextView::CalcLineCharDim()
{
CDC *pdc = GetDC();
CFont *pOldFont = pdc->SelectObject(GetFont());
CSize szCharExt = pdc->GetTextExtent(_T("X"));
m_nLineHeight = szCharExt.cy;
if (m_nLineHeight < 1)
m_nLineHeight = 1;
m_nCharWidth = szCharExt.cx;
/*
TEXTMETRIC tm;
if (pdc->GetTextMetrics(&tm))
m_nCharWidth -= tm.tmOverhang;
*/
pdc->SelectObject(pOldFont);
ReleaseDC(pdc);
}
int CCrystalTextView::GetLineHeight()
{
if (m_nLineHeight == -1)
CalcLineCharDim();
return m_nLineHeight;
}