user/wxLayout/wxlparser.cpp

   1 /*-*- c++ -*-********************************************************
   2  * wxlparser.h : parsers,  import/export for wxLayoutList           *
   3  *                                                                  *
   4  * (C) 1998 by Karsten Ballüder (Ballueder@usa.net)                 *
   5  *                                                                  *
   6  * $Id$
   7  *******************************************************************/
   8
   9 #ifdef __GNUG__
  10 #   pragma implementation "wxlparser.h"
  11 #endif
  12
  13 #include   "wxllist.h"
  14 #include   "wxlparser.h"
  15
  16 #define   BASE_SIZE 12
  17
  18 void wxLayoutImportText(wxLayoutList &list, String const &str)
  19 {
  20    char * cptr = (char *)str.c_str(); // string gets changed only temporarily
  21    const char * begin = cptr;
  22    char  backup;
  23
  24    for(;;)
  25    {
  26       begin = cptr++;
  27       while(*cptr && *cptr != '\n')
  28          cptr++;
  29       backup = *cptr;
  30       *cptr = '\0';
  31       list.Insert(begin);
  32       *cptr = backup;
  33       if(backup == '\n')
  34          list.LineBreak();
  35       else if(backup == '\0') // reached end of string
  36          break;
  37       cptr++;
  38    }
  39 }
  40
  41 static
  42 String wxLayoutExportCmdAsHTML(wxLayoutObjectCmd const & cmd,
  43                                  wxLayoutStyleInfo **lastStylePtr)
  44 {
  45    static char buffer[20];
  46    String html;
  47
  48    wxLayoutStyleInfo *si = cmd.GetStyle();
  49    wxLayoutStyleInfo *last_si = NULL;
  50
  51    int size, sizecount;
  52
  53    if(lastStylePtr != NULL)
  54       last_si = *lastStylePtr;
  55
  56    html += "<font ";
  57
  58    html +="color=";
  59    sprintf(buffer,"\"#%02X%02X%02X\"", si->fg_red,si->fg_green,si->fg_blue);
  60    html += buffer;
  61
  62
  63    html += " bgcolor=";
  64    sprintf(buffer,"\"#%02X%02X%02X\"", si->bg_red,si->bg_green,si->bg_blue);
  65    html += buffer;
  66
  67    switch(si->family)
  68    {
  69    case wxSWISS:
  70    case wxMODERN:
  71       html += " face=\"Arial,Helvetica\""; break;
  72    case wxROMAN:
  73       html += " face=\"Times New Roman, Times\""; break;
  74    case wxTELETYPE:
  75       html += " face=\"Courier New, Courier\""; break;
  76    default:
  77       ;
  78    }
  79
  80    size = BASE_SIZE; sizecount = 0;
  81    while(size < si->size && sizecount < 5)
  82    {
  83       sizecount ++;
  84       size = (size*12)/10;
  85    }
  86    while(size > si->size && sizecount > -5)
  87    {
  88       sizecount --;
  89       size = (size*10)/12;
  90    }
  91    html += "size=";
  92    sprintf(buffer,"%+1d", sizecount);
  93    html += buffer;
  94
  95    html +=">";
  96
  97    if(last_si != NULL)
  98       html ="</font>"+html; // terminate any previous font command
  99
 100    if((si->weight == wxBOLD) && ( (!last_si) || (last_si->weight != wxBOLD)))
 101       html += "<b>";
 102    else
 103       if(si->weight != wxBOLD && ( last_si && (last_si->weight == wxBOLD)))
 104          html += "</b>";
 105
 106    if(si->style == wxSLANT)
 107       si->style = wxITALIC; // the same for html
 108
 109    if((si->style == wxITALIC) && ( (!last_si) || (last_si->style != wxITALIC)))
 110       html += "<i>";
 111    else
 112       if(si->style != wxITALIC && ( last_si && (last_si->style == wxITALIC)))
 113          html += "</i>";
 114
 115    if(si->underline && ( (!last_si) || ! last_si->underline))
 116       html += "<u>";
 117    else if(si->underline == false && ( last_si && last_si->underline))
 118       html += "</u>";
 119
 120    if(last_si)
 121       delete last_si;
 122    *lastStylePtr = si;
 123    return html;
 124 }
 125
 126
 127
 128 #define   WXLO_IS_TEXT(type) \
 129 ( (type == WXLO_TYPE_TEXT || type == WXLO_TYPE_LINEBREAK) \
 130   || (type == WXLO_TYPE_CMD \
 131       && mode == WXLO_EXPORT_AS_HTML))
 132
 133
 134
 135    wxLayoutExportObject *wxLayoutExport(wxLayoutList &list,
 136                                         wxLayoutList::iterator &from,
 137                                         wxLayoutExportMode mode)
 138 {
 139    if(from == list.end())
 140       return NULL;
 141
 142    wxLayoutObjectType   type = (*from)->GetType();
 143    wxLayoutExportObject     * export = new wxLayoutExportObject();
 144
 145    static wxLayoutStyleInfo *s_si = NULL;
 146
 147    if( mode == WXLO_EXPORT_AS_OBJECTS || ! WXLO_IS_TEXT(type)) // simple case
 148    {
 149       export->type = WXLO_EXPORT_OBJECT;
 150       export->content.object = *from;
 151       from++;
 152       return export;
 153    }
 154
 155    String *str = new String();
 156
 157    // text must be concatenated
 158    while(from != list.end() && WXLO_IS_TEXT(type))
 159    {
 160       switch(type)
 161       {
 162       case WXLO_TYPE_TEXT:
 163          *str += ((wxLayoutObjectText *)*from)->GetText();
 164          break;
 165       case WXLO_TYPE_LINEBREAK:
 166          if(mode == WXLO_EXPORT_AS_HTML)
 167             *str += "<br>";
 168          *str += '\n';
 169          break;
 170       case WXLO_TYPE_CMD:
 171          //wxASSERT(mode == WXLO_EXPORT_AS_HTML,"reached cmd object in text mode")
 172          assert(mode == WXLO_EXPORT_AS_HTML);
 173          *str += wxLayoutExportCmdAsHTML(*(wxLayoutObjectCmd const
 174                                            *)*from, &s_si);
 175          break;
 176       default:  // ignore icons
 177          ;
 178       }
 179       from++;
 180       if(from != list.end())
 181          type = (*from)->GetType();
 182    }
 183    export->type = (mode == WXLO_EXPORT_AS_HTML) ?  WXLO_EXPORT_HTML : WXLO_EXPORT_TEXT;
 184    export->content.text = str;
 185    return export;
 186 }