user/wxLayout/wxlparser.cpp

   1 /*-*- c++ -*-********************************************************
   2  * wxlparser.h : parsers,  import/export for wxLayoutList           *
   3  *                                                                  *
   4  * (C) 1998,1999 by Karsten Ballüder (Ballueder@usa.net)            *
   5  *                                                                  *
   6  * $Id$
   7  *******************************************************************/
   8
   9 #ifdef __GNUG__
  10 #   pragma implementation "wxlparser.h"
  11 #endif
  12
  13 //#include "Mpch.h"
  14 #ifdef M_PREFIX
  15 #   include "gui/wxllist.h"
  16 #   include "gui/wxlparser.h"
  17 #else
  18 #   include "wxllist.h"
  19 #   include "wxlparser.h"
  20 #endif
  21
  22 #define   BASE_SIZE 12
  23
  24 inline static bool IsEndOfLine(const char *p, int mode)
  25 {
  26    // in addition to Unix EOL convention we also (but not instead) understand
  27    // the DOS one under Windows
  28    return
  29       (mode == WXLO_EXPORT_WITH_CRLF) ?
  30       ((*p == '\r') && (*(p + 1) == '\n'))
  31       :
  32       (((*p == '\r') && (*(p + 1) == '\n'))||(*p == '\n'));
  33 }
  34
  35 void wxLayoutImportText(wxLayoutList *list, wxString const &str, int withflag)
  36 {
  37    char * cptr = (char *)str.c_str(); // string gets changed only temporarily
  38    const char * begin = cptr;
  39    char  backup;
  40
  41    for(;;)
  42    {
  43       begin = cptr;
  44       while( *cptr && !IsEndOfLine(cptr, withflag) )
  45          cptr++;
  46       backup = *cptr;
  47       *cptr = '\0';
  48       list->Insert(begin);
  49       *cptr = backup;
  50
  51       // check if it's the end of this line
  52       if ( IsEndOfLine(cptr, withflag) )
  53       {
  54          // if it was "\r\n", skip the following '\n'
  55          if ( *cptr == '\r' )
  56             cptr++;
  57          list->LineBreak();
  58       }
  59       else if(backup == '\0') // reached end of string
  60          break;
  61       cptr++;
  62    }
  63 }
  64
  65 static
  66 wxString wxLayoutExportCmdAsHTML(wxLayoutObjectCmd const & cmd,
  67                                  wxLayoutStyleInfo *styleInfo)
  68 {
  69    static char buffer[20];
  70    wxString html;
  71
  72    wxLayoutStyleInfo si;
  73    cmd.GetStyle(&si);
  74
  75    int size, sizecount;
  76
  77    html += "<font ";
  78
  79    html +="color=";
  80    sprintf(buffer,"\"#%02X%02X%02X\"", si.fg_red,si.fg_green,si.fg_blue);
  81    html += buffer;
  82
  83
  84    html += " bgcolor=";
  85    sprintf(buffer,"\"#%02X%02X%02X\"", si.bg_red,si.bg_green,si.bg_blue);
  86    html += buffer;
  87
  88    switch(si.family)
  89    {
  90    case wxSWISS:
  91    case wxMODERN:
  92       html += " face=\"Arial,Helvetica\""; break;
  93    case wxROMAN:
  94       html += " face=\"Times New Roman, Times\""; break;
  95    case wxTELETYPE:
  96       html += " face=\"Courier New, Courier\""; break;
  97    default:
  98       ;
  99    }
 100
 101    size = BASE_SIZE; sizecount = 0;
 102    while(size < si.size && sizecount < 5)
 103    {
 104       sizecount ++;
 105       size = (size*12)/10;
 106    }
 107    while(size > si.size && sizecount > -5)
 108    {
 109       sizecount --;
 110       size = (size*10)/12;
 111    }
 112    html += "size=";
 113    sprintf(buffer,"%+1d", sizecount);
 114    html += buffer;
 115
 116    html +=">";
 117
 118    if(styleInfo != NULL)
 119       html ="</font>"+html; // terminate any previous font command
 120
 121    if((si.weight == wxBOLD) && ( (!styleInfo) || (styleInfo->weight != wxBOLD)))
 122       html += "<b>";
 123    else
 124       if(si.weight != wxBOLD && ( styleInfo && (styleInfo->weight == wxBOLD)))
 125          html += "</b>";
 126
 127    if(si.style == wxSLANT)
 128       si.style = wxITALIC; // the same for html
 129
 130    if((si.style == wxITALIC) && ( (!styleInfo) || (styleInfo->style != wxITALIC)))
 131       html += "<i>";
 132    else
 133       if(si.style != wxITALIC && ( styleInfo && (styleInfo->style == wxITALIC)))
 134          html += "</i>";
 135
 136    if(si.underline && ( (!styleInfo) || ! styleInfo->underline))
 137       html += "<u>";
 138    else if(si.underline == false && ( styleInfo && styleInfo->underline))
 139       html += "</u>";
 140
 141
 142    *styleInfo = si; // update last style info
 143
 144    return html;
 145 }
 146
 147
 148
 149 #define   WXLO_IS_TEXT(type) \
 150 ( type == WXLO_TYPE_TEXT \
 151   || (type == WXLO_TYPE_CMD \
 152       && mode == WXLO_EXPORT_AS_HTML))
 153
 154
 155
 156 wxLayoutExportObject *wxLayoutExport(wxLayoutExportStatus *status,
 157                                      int mode, int flags)
 158 {
 159    wxASSERT(status);
 160    wxLayoutExportObject * export;
 161
 162    if(status->m_iterator == NULLIT) // end of line
 163    {
 164       if(!status->m_line || status->m_line->GetNextLine() == NULL)
 165          // reached end of list
 166          return NULL;
 167    }
 168    export = new wxLayoutExportObject();
 169    wxLayoutObjectType type;
 170    if(status->m_iterator != NULLIT)
 171    {
 172       type = (** status->m_iterator).GetType();
 173       if( mode == WXLO_EXPORT_AS_OBJECTS || ! WXLO_IS_TEXT(type)) // simple case
 174       {
 175          export->type = WXLO_EXPORT_OBJECT;
 176          export->content.object = *status->m_iterator;
 177          status->m_iterator++;
 178          return export;
 179       }
 180    }
 181    else
 182    {  // iterator == NULLIT
 183       if(mode == WXLO_EXPORT_AS_OBJECTS)
 184       {
 185          export->type = WXLO_EXPORT_EMPTYLINE;
 186          export->content.object = NULL; //empty line
 187          status->m_line = status->m_line->GetNextLine();
 188          if(status->m_line)
 189             status->m_iterator = status->m_line->GetFirstObject();
 190          return export;
 191       }
 192       else
 193          type = WXLO_TYPE_TEXT;
 194    }
 195
 196    wxString *str = new wxString();
 197    // text must be concatenated
 198    int testf = WXLO_EXPORT_WITH_CRLF;
 199    for(;;)
 200    {
 201       while(status->m_iterator == NULLIT)
 202       {
 203          if(flags & WXLO_EXPORT_AS_HTML)
 204             *str += "<br>";
 205          if(flags & WXLO_EXPORT_WITH_CRLF)
 206             *str += "\r\n";
 207          else
 208             *str += '\n';
 209
 210          status->m_line = status->m_line->GetNextLine();
 211          if(status->m_line)
 212             status->m_iterator = status->m_line->GetFirstObject();
 213          else
 214             break; // end of list
 215       }
 216       if(! status->m_line)  // reached end of list, fall through
 217          break;
 218       type = (** status->m_iterator).GetType();
 219       if(type == WXLO_TYPE_ICON)
 220          break;
 221       switch(type)
 222       {
 223       case WXLO_TYPE_TEXT:
 224          *str += ((wxLayoutObjectText *)*status->m_iterator)->GetText();
 225          break;
 226       case WXLO_TYPE_CMD:
 227          wxASSERT_MSG( mode == WXLO_EXPORT_AS_HTML,
 228                        "reached cmd object in text mode" );
 229
 230          *str += wxLayoutExportCmdAsHTML(*(wxLayoutObjectCmd const
 231                                            *)*status->m_iterator, & status->m_si);
 232          break;
 233       default:  // ignore icons
 234          ;
 235       }
 236       status->m_iterator++;
 237    }
 238
 239    export->type = (mode == WXLO_EXPORT_AS_HTML)
 240       ?  WXLO_EXPORT_HTML : WXLO_EXPORT_TEXT;
 241    export->content.text = str;
 242    return export;
 243 }
 244