mimerichtextp.h

linux下的E_MAIL客户端源码

/*
 *  $Id: MimeRichTextP.h,v 1.1.1.1 2000/04/25 13:49:01 fnevgeny Exp $
 *  
 *  Copyright (c) 1994 HAL Computer Systems International, Ltd.
 * 
 *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
 *                  1315 Dell Avenue
 *                  Campbell, CA  95008
 *
 * Author: Greg Hilton
 * Contributors: Tom Lang, Frank Bieser, and others
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * http://www.gnu.org/copyleft/gpl.html
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#ifndef _MimeRichTextP_h_
#define _MimeRichTextP_h_

#include "FontDataC.h"
#include "RectC.h"
#include "StringC.h"
#include "PtrListC.h"
#include "PixelListC.h"
#include "CallbackListC.h"

#include <X11/Intrinsic.h>
#include <Xm/Xm.h>

#define MIME_ACTION_COUNT	73

/*----------------------------------------------------------------------
 * Class to hold state information about the text
 */

class TextStateC {

   char			excerpt;	// Current level of excerpting
   char			lindent;	// Current level of left indenting
   char			rindent;	// Current Level of right indenting
   char			underline;	// Current level of underlining

   StringC		fstack;		// Stack of font commands
   StringC		jstack;		// Stack of justify commands
   PixelListC		cstack;		// Stack of color commands
   StringC*		plink;		// Pointer to link value

public:

   TextStateC();
   TextStateC(const TextStateC&);

   inline char		Excerpt()   const { return excerpt; }
   inline char		LIndent()   const { return lindent; }
   inline char		RIndent()   const { return rindent; }
   inline char		Underline() const { return underline; }

   inline void		ExcerptMore()   { excerpt++; }
   inline void		ExcerptLess()   { if ( excerpt > 0 ) excerpt--; }
   inline void		Excerpt(char val) { excerpt = val; }
   inline void		LIndentMore()   { lindent++; }
   inline void		LIndentLess()   { if ( lindent > 0 ) lindent--; }
   inline void		LIndent(char val) { lindent = val; }
   inline void		RIndentMore()   { rindent++; }
   inline void		RIndentLess()   { if ( rindent > 0 ) rindent--; }
   inline void		RIndent(char val) { rindent = val; }
   inline void		UnderlineMore() { underline++; }
   inline void		UnderlineLess() { if ( underline > 0 ) underline--; }
   inline void		Underline(char val) { underline = val; }

   inline int	CmdCount(FontCmdT fc) const {
      int	count = 0;
      for (int i=0; i<fstack.size(); i++) if ( fstack[i] == fc ) count++;
      return count;
   }
   inline int	CmdCount(JustCmdT jc) const {
      int	count = 0;
      for (int i=0; i<jstack.size(); i++) if ( jstack[i] == jc ) count++;
      return count;
   }
   inline int	ColorCount(Pixel pix) const {
      int	count = 0;
      for (int i=0; i<cstack.size(); i++) if ( *cstack[i] == pix ) count++;
      return count;
   }
   inline int	PLinkCount() const	{ return (plink ? 1 : 0); }
   inline int	ColorCmdCount() const   { return cstack.size(); }
   inline int	Bold() const		{ return CmdCount(FC_BOLD);   }
   inline int	Italic() const		{ return CmdCount(FC_ITALIC); }
   inline int	Fixed() const		{ return CmdCount(FC_FIXED);  }
   inline int	Smaller() const		{ return CmdCount(FC_SMALLER);  }
   inline int	Bigger() const		{ return CmdCount(FC_BIGGER);  }
   inline int	Charset1() const	{ return CmdCount(FC_CHARSET_1);  }
   inline int	Charset2() const	{ return CmdCount(FC_CHARSET_2);  }
   inline int	Charset3() const	{ return CmdCount(FC_CHARSET_3);  }
   inline int	Charset4() const	{ return CmdCount(FC_CHARSET_4);  }
   inline int	Charset5() const	{ return CmdCount(FC_CHARSET_5);  }
   inline int	Charset6() const	{ return CmdCount(FC_CHARSET_6);  }
   inline int	Charset7() const	{ return CmdCount(FC_CHARSET_7);  }
   inline int	Charset8() const	{ return CmdCount(FC_CHARSET_8);  }
   inline int	Charset9() const	{ return CmdCount(FC_CHARSET_9);  }
   inline int	URL() const		{ return CmdCount(FC_URL);   }
   inline int	Center() const		{ return CmdCount(JC_CENTER);  }
   inline int	FlushLeft() const	{ return CmdCount(JC_LEFT);  }
   inline int	FlushRight() const	{ return CmdCount(JC_RIGHT);  }
   inline int	FlushBoth() const	{ return CmdCount(JC_BOTH);  }
   inline int	NoFill() const		{ return CmdCount(JC_NOFILL);  }
   inline int	Charset() const		{ return (Charset1() + Charset2() +
						  Charset3() + Charset4() +
						  Charset5() + Charset6() +
						  Charset7() + Charset8() +
						  Charset9()); }

   inline       StringC&	FontStack()       { return fstack; }
   inline const StringC&	FontStack() const { return fstack; }
   inline FontCmdT	CurFontCmd() const {
      return (FontCmdT)fstack.LastChar();
   }
   inline void		PushFont(FontCmdT fcmd) {
      fstack += (char)fcmd;
   }
   inline void		PopFont() {
      if ( fstack.size() > 0 ) fstack.Clear(fstack.size()-1);
   }

   inline       StringC&	JustStack()       { return jstack; }
   inline const StringC&	JustStack() const { return jstack; }
   inline JustCmdT	CurJustCmd() const {
      return (JustCmdT)jstack.LastChar();
   }
   inline void		PushJust(JustCmdT jcmd) {
      jstack += (char)jcmd;
   }
   inline void		PopJust() {
      if ( jstack.size() > 0 ) jstack.Clear(jstack.size()-1);
   }

   inline       PixelListC&	ColorStack()       { return cstack; }
   inline const PixelListC&	ColorStack() const { return cstack; }
   inline Pixel	CurColor() const {
      return (cstack.size() > 0 ? *cstack[cstack.size()-1] : (Pixel)NULL);
   }
   inline void		PushColor(Pixel pix) {
      cstack.add(pix);
   }
   inline void		PopColor() {
      if ( cstack.size() > 0 ) cstack.remove(cstack.size()-1);
   }

   inline	StringC*	PLink()		    { return plink; }
   inline void		PushLink(StringC &lnk) {
      if (plink) delete plink; plink = new StringC(lnk);
   }
   inline void		PopLink() {
      if (plink) delete plink; plink = NULL;
   }

   void		Reset();
   void		operator=(const TextStateC&);
   int		operator==(const TextStateC&) const;
   int		operator!=(const TextStateC& t) const { return !(*this == t); }
};

#define NULL_CMD_POS	-1

/*----------------------------------------------------------------------
 * Rich/Enriched text drawing data
 */

class SoftLineC;

class RichDrawDataC {

public:

   int		x;
   int		width;
   FontDataC	*font;
   StringC	string;
   Boolean	underline;
   SoftLineC	*softLine;	// Soft line to which this data belongs
   int		cmdPos;		// Index of the command that this
   				//    data represents.
   int		textOff;	// Where this data string starts relative
   				//    to the command string.
   RichGraphicC		*graphic;// If this is a graphic object
   RichDrawDataC	*prev;	// Previous draw data
   RichDrawDataC	*next;	// Next draw data

   RichDrawDataC() {
      x         = 0;
      width     = 0;
      font      = NULL;
      underline = False;
      softLine  = NULL;
      cmdPos    = 0;
      textOff   = 0;
      graphic   = NULL;
      prev      = NULL;
      next      = NULL;
   }

   int		Snap(int);
   int		CharPos(int);
   int		LastPos() { return (graphic ? 1 : string.size()); }

//
// comparison
//
   inline int	compare(const RichDrawDataC& d) const {
      int	result = 0;
      if      ( d.width < width ) result = -1;
      else if ( d.width > width ) result =  1;
      return result;
   }
   inline int	operator<(const RichDrawDataC& d) const
	{ return (compare(d) < 0); }
   inline int	operator>(const RichDrawDataC& d) const
	{ return (compare(d) > 0); }
   inline int	operator==(const RichDrawDataC& d) const
	{ return (compare(d) == 0); }
   inline int	operator!=(const RichDrawDataC& d) const
	{ return (compare(d) != 0); }
};

/*----------------------------------------------------------------------
 * Rich/Enriched line data as wrapped and displayed on the screen
 */

class TextLineC;

class SoftLineC {

public:

   TextLineC		*textLine;
   RectC		bounds;
   int			totalWd;
   int			descent;
   RichDrawDataC	*drawData;	// Linked list of drawing elements
   SoftLineC		*prev;
   SoftLineC		*next;

   SoftLineC();
   ~SoftLineC();

   void			AddDrawData(RichDrawDataC*);
   RichDrawDataC	*PickData(int);

   inline RichDrawDataC	*FirstData() { return drawData; }
   inline RichDrawDataC	*LastData() {
      RichDrawDataC	*data = drawData;
      if ( data ) {
	 while ( data->next ) data = data->next;
      }
      return data;
   }
//
// comparison
//
   inline int	compare(const SoftLineC& l) const {
      int	result = 0;
      if      ( l.bounds.ymin < bounds.ymin ) result = -1;
      else if ( l.bounds.ymin > bounds.ymin ) result =  1;
      return result;
   }
   inline int	operator<(const SoftLineC& l) const
	{ return (compare(l) < 0); }
   inline int	operator>(const SoftLineC& l) const
	{ return (compare(l) > 0); }
   inline int	operator==(const SoftLineC& l) const
	{ return (compare(l) == 0); }
   inline int	operator!=(const SoftLineC& l) const
	{ return (compare(l) != 0); }
};

/*----------------------------------------------------------------------
 * Each command consists of a text state and a string.
 */

class RichCmdC {

public:

   RichCmdTypeT	type;