scintillawnd.cpp

一个可以提供语法高亮显示的编辑器

   while (pExtension != NULL)
   {
      CTokenizer st(szExtensions[i], _T("|"));
      while (st.HasMoreTokens())
      {
         if (st.Next().CompareNoCase(szExtension) == 0)
            return nFormats[i];
      }
      i++;
      pExtension = szExtensions[i];
   }
   return SCLEX_NULL;
}
/////////////////////////////////////
// @mfunc Try to calculate the number of characters needed for the display of the linenumbers.
// This function returns 3 for 10-99 lines in file, 4 for 100-999 lines and so on.
// @rvalue int | number of characters needed to display linenumbers
//
int CScintillaWnd::GetLinenumberChars ()
{
// try to get number of lines in control
   LRESULT lLines = SendMessage(SCI_GETLINECOUNT, 0, 0);

   int nChars = 1;
   while (lLines > 0)
   {
      lLines = lLines / 10;
      nChars++;
   }
   return nChars; // allow an extra char for safety
}
/////////////////////////////////////
// @mfunc Calculate a reasonable width for Linenumberdisplay
// @rvalue int | number of pixels for the margin width of margin (0) 
//
int CScintillaWnd::GetLinenumberWidth ()
{
// get number of chars needed to display highest linenumber
   int nChars = GetLinenumberChars ()+1;
// get width of character '9' in pixels
   LRESULT lWidth = SendMessage(SCI_TEXTWIDTH, STYLE_LINENUMBER, (long)_T("9"));
   return nChars * lWidth;
}
/////////////////////////////////////
// @mfunc Set the display of line numbers on or off.
// Scintilla uses 3 "Margin" at the left of the edit window. The Margin (0)
// is used to display the linenumbers. If set to 0 no numbers are displayed. If
// set to a width > 0 - linenumbers are displayed. We use a helper function to 
// calculate the size of this margin.
// @rvalue int | number of pixels for the margin width of margin (0) 
//
void CScintillaWnd::SetDisplayLinenumbers(
                                          BOOL bFlag) //@parm flag if we shuld display line numbers
{
// if nothing changes just return
   if (GetDisplayLinenumbers() == bFlag)
      return;
// if display is turned off we set margin 0 to 0
   if (!bFlag)
   {
	   SendMessage(SCI_SETMARGINWIDTHN, 0, 0);
   }
// if display is turned o we set margin 0 to the calculated width
   else
   {
      int nWidth = GetLinenumberWidth() + 4;
	   SendMessage(SCI_SETMARGINWIDTHN, 0, nWidth);
   }
   m_bLinenumbers = bFlag;
}
/////////////////////////////////////
// @mfunc Cut the selected text to the clipboard
// @rvalue void | not used
//
void CScintillaWnd::Cut()
{
   SendMessage(SCI_CUT, 0, 0);
}
/////////////////////////////////////
// @mfunc Copy the selected text to the clipboard
// @rvalue void | not used
//
void CScintillaWnd::Copy()
{
   SendMessage(SCI_COPY, 0, 0);
}
/////////////////////////////////////
// @mfunc Paste the text from the clipboard to the control
// @rvalue void | not used
//
void CScintillaWnd::Paste()
{
   SendMessage(SCI_PASTE, 0, 0);
}
/////////////////////////////////////
// @mfunc Delete the selected text
// @rvalue void | not used
//
void CScintillaWnd::Clear()
{
   SendMessage(SCI_CLEAR, 0, 0);
}
/////////////////////////////////////
// @mfunc Select the complete text
// @rvalue void | not used
//
void CScintillaWnd::SelectAll()
{
   SendMessage(SCI_SELECTALL, 0, 0);
}
/////////////////////////////////////
// @mfunc Undo the last action
// @rvalue void | not used
//
void CScintillaWnd::Undo()
{
   SendMessage(SCI_UNDO, 0, 0);
}
/////////////////////////////////////
// @mfunc Redo the last undone action
// @rvalue void | not used
//
void CScintillaWnd::Redo()
{
   SendMessage(SCI_REDO, 0, 0);
}
/////////////////////////////////////
// @mfunc Returns a flag if we can undo the last action
// @rvalue BOOL | TRUE if we can undo - else FALSE
//
BOOL CScintillaWnd::CanUndo()
{
   return SendMessage(SCI_CANUNDO, 0, 0) != 0;
}
/////////////////////////////////////
// @mfunc Returns a flag if we can redo the last undone action
// @rvalue BOOL | TRUE if we can redo - else FALSE
//
BOOL CScintillaWnd::CanRedo()
{
   return SendMessage(SCI_CANREDO, 0, 0) != 0;
}
/////////////////////////////////////
// @mfunc Returns a flag if there is text in the clipboard which we can paste
// @rvalue BOOL | TRUE if the clipboard contains text to paste - else FALSE
//
BOOL CScintillaWnd::CanPaste()
{
   return SendMessage(SCI_CANPASTE, 0, 0) != 0;
}
/////////////////////////////////////
// @mfunc Get the current line number - this the with the caret in it
// @rvalue long | line number with the caret in it - starts with 1
//
long CScintillaWnd::GetCurrentLine()
{
   long lPos = SendMessage(SCI_GETCURRENTPOS, 0, 0);
   return SendMessage(SCI_LINEFROMPOSITION, lPos, 0) + 1;
}
/////////////////////////////////////
// @mfunc Get the current column number = position of the caret within the line.
// This return value my be affected by the TAB setting! Starts with 1
// @rvalue long | current column number
//
long CScintillaWnd::GetCurrentColumn()
{
   long lPos = SendMessage(SCI_GETCURRENTPOS, 0, 0);
   return SendMessage(SCI_GETCOLUMN, lPos, 0) + 1;
}
/////////////////////////////////////
// @mfunc Return the current character position within the file.
// @rvalue long | current character position
//
long CScintillaWnd::GetCurrentPosition()
{
   return SendMessage(SCI_GETCURRENTPOS, 0, 0);
}
/////////////////////////////////////
// @mfunc Return the current style at the caret
// @rvalue int | the current style index (0...127)
//
int CScintillaWnd::GetCurrentStyle()
{
   long lPos = SendMessage(SCI_GETCURRENTPOS, 0, 0);
   return SendMessage(SCI_GETSTYLEAT, lPos, 0);
}
/////////////////////////////////////
// @mfunc Return the current folding level at the caret line
// @rvalue int | the current folding level (0...n)
//
int CScintillaWnd::GetCurrentFoldinglevel()
{
   long lLine = GetCurrentLine();
   int level = (SendMessage(SCI_GETFOLDLEVEL, lLine, 0)) & SC_FOLDLEVELNUMBERMASK;
   return level-1024;
}
/////////////////////////////////////
// @mfunc set the fontname e.g. "Arial"
// @rvalue void | not used
//
void CScintillaWnd::SetFontname(int nStyle, LPCSTR szFontname)
{
   SendMessage(SCI_STYLESETFONT, nStyle, (long)szFontname);
}
/////////////////////////////////////
// @mfunc Set the font height in points
// @rvalue void | not used
//
void CScintillaWnd::SetFontheight(int nStyle, int nHeight)
{
   SendMessage(SCI_STYLESETSIZE, nStyle, (long)nHeight);
}
/////////////////////////////////////
// @mfunc Set the foreground color
// @rvalue void | not used
//
void CScintillaWnd::SetForeground(int nStyle, COLORREF crForeground)
{
   SendMessage(SCI_STYLESETFORE, nStyle, (long)crForeground);
}
/////////////////////////////////////
// @mfunc set the backgroundcolor
// @rvalue void | not used
//
void CScintillaWnd::SetBackground(int nStyle, COLORREF crBackground)
{
   SendMessage(SCI_STYLESETBACK, nStyle, (long)crBackground);
}
/////////////////////////////////////
// @mfunc set given style to bold
// @rvalue void | not used
//
void CScintillaWnd::SetBold(int nStyle, BOOL bBold)
{
   SendMessage(SCI_STYLESETBOLD, nStyle, (long)bBold);
}
/////////////////////////////////////
// @mfunc set given style to bold
// @rvalue void | not used
//
void CScintillaWnd::SetItalic(int nStyle, BOOL bItalic)
{
   SendMessage(SCI_STYLESETITALIC, nStyle, (long)bItalic);
}
/////////////////////////////////////
// @mfunc set given style to bold
// @rvalue void | not used
//
void CScintillaWnd::SetUnderline(int nStyle, BOOL bUnderline)
{
   SendMessage(SCI_STYLESETUNDERLINE, nStyle, (long)bUnderline);
}
/////////////////////////////////////
// @mfunc Return flag if we are in overstrike mode
// @rvalue BOOL | TRUE if we are in overstrike mode - else FALSE
//
BOOL CScintillaWnd::GetOverstrike()
{
   return SendMessage(SCI_GETOVERTYPE , 0, 0);
}
/////////////////////////////////////
// @mfunc set set overstrike mode (TRUE) or insert mode (FALSE)
// @rvalue void | not used
//
void CScintillaWnd::SetOverstrike(BOOL bOverstrike)
{
   SendMessage(SCI_SETOVERTYPE, bOverstrike, 0);
}
/////////////////////////////////////
// @mfunc Toggle the display of the selection bookmark margin
// @rvalue void | not used
//
void CScintillaWnd::SetDisplaySelection(BOOL bFlag)
{
   m_bSelection = bFlag;
   if (bFlag)
	   SendMessage(SCI_SETMARGINWIDTHN, 1, 16);
   else
	   SendMessage(SCI_SETMARGINWIDTHN, 1, 0);
}
/////////////////////////////////////
// @mfunc Toggle the display of the folding margin
// @rvalue void | not used
//
void CScintillaWnd::SetDisplayFolding(BOOL bFlag)
{
   m_bFolding = bFlag;
   if (bFlag)
	   SendMessage(SCI_SETMARGINWIDTHN, 2, 16);
   else
	   SendMessage(SCI_SETMARGINWIDTHN, 2, 0);
}
/////////////////////////////////////
// @mfunc init the view with reasonable defaults
// @rvalue void | not used
//
void CScintillaWnd::Init()
{
// clear all text styles
   SendMessage(SCI_CLEARDOCUMENTSTYLE, 0, 0);
// set the number of styling bits to 7 - the asp/html views need a lot of styling - default is 5
// If you leave the default you will see twiggle lines instead of ASP code
	SendMessage(SCI_SETSTYLEBITS, 7, 0);
// set the display for indetation guides to on - this displays virtical dotted lines from the beginning of 
// a code block to the end of the block
	SendMessage(SCI_SETINDENTATIONGUIDES, TRUE, 0);
// set tabwidth to 3
	SendMessage(SCI_SETTABWIDTH,3,0);
// set indention to 3
	SendMessage(SCI_SETINDENT,3,0);
// set the caret blinking time to 400 milliseconds
	SendMessage(SCI_SETCARETPERIOD,400,0);
// source folding section
// tell the lexer that we want folding information - the lexer supplies "folding levels"
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.html"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.html.preprocessor"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.comment"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.at.else"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.flags"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("fold.preprocessor"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("styling.within.preprocessor"), (LPARAM)_T("1"));
   SendMessage(SCI_SETPROPERTY, (WPARAM)_T("asp.default.language"), (LPARAM)_T("1"));
// Tell scintilla to draw folding lines UNDER the folded line
   SendMessage(SCI_SETFOLDFLAGS, 16,0);
// Set margin 2 = folding margin to display folding symbols
	SendMessage(SCI_SETMARGINMASKN, 2, SC_MASK_FOLDERS);
// allow notifications for folding actions
   SendMessage(SCI_SETMODEVENTMASK, SC_MOD_INSERTTEXT|SC_MOD_DELETETEXT, 0);
//   SendMessage(SCI_SETMODEVENTMASK, SC_MOD_CHANGEFOLD|SC_MOD_INSERTTEXT|SC_MOD_DELETETEXT, 0);
// make the folding margin sensitive to folding events = if you click into the margin you get a notification event