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    if(str.Length() == 0)
  38       return;
  39    char * cptr = (char *)str.c_str(); // string gets changed only temporarily
  40    const char * begin = cptr;
  41    char  backup;
  42
  43    for(;;)
  44    {
  45       begin = cptr;
  46       while( *cptr && !IsEndOfLine(cptr, withflag) )
  47          cptr++;
  48       backup = *cptr;
  49       *cptr = '\0';
  50       list->Insert(begin);
  51       *cptr = backup;
  52
  53       // check if it's the end of this line
  54       if ( IsEndOfLine(cptr, withflag) )
  55       {
  56          // if it was "\r\n", skip the following '\n'
  57          if ( *cptr == '\r' )
  58             cptr++;
  59          list->LineBreak();
  60       }
  61       else if(backup == '\0') // reached end of string
  62          break;
  63       cptr++;
  64    }
  65 }
  66
  67 static
  68 wxString wxLayoutExportCmdAsHTML(wxLayoutObjectCmd const & cmd,
  69                                  wxLayoutStyleInfo *styleInfo)
  70 {
  71    static char buffer[20];
  72    wxString html;
  73
  74    wxLayoutStyleInfo si;
  75    cmd.GetStyle(&si);
  76
  77    int size, sizecount;
  78
  79    html += "<font ";
  80
  81    html +="color=";
  82    sprintf(buffer,"\"#%02X%02X%02X\"", si.fg_red,si.fg_green,si.fg_blue);
  83    html += buffer;
  84
  85
  86    html += " bgcolor=";
  87    sprintf(buffer,"\"#%02X%02X%02X\"", si.bg_red,si.bg_green,si.bg_blue);
  88    html += buffer;
  89
  90    switch(si.family)
  91    {
  92    case wxSWISS:
  93    case wxMODERN:
  94       html += " face=\"Arial,Helvetica\""; break;
  95    case wxROMAN:
  96       html += " face=\"Times New Roman, Times\""; break;
  97    case wxTELETYPE:
  98       html += " face=\"Courier New, Courier\""; break;
  99    default:
 100       ;
 101    }
 102
 103    size = BASE_SIZE; sizecount = 0;
 104    while(size < si.size && sizecount < 5)
 105    {
 106       sizecount ++;
 107       size = (size*12)/10;
 108    }
 109    while(size > si.size && sizecount > -5)
 110    {
 111       sizecount --;
 112       size = (size*10)/12;
 113    }
 114    html += "size=";
 115    sprintf(buffer,"%+1d", sizecount);
 116    html += buffer;
 117
 118    html +=">";
 119
 120    if(styleInfo != NULL)
 121       html ="</font>"+html; // terminate any previous font command
 122
 123    if((si.weight == wxBOLD) && ( (!styleInfo) || (styleInfo->weight != wxBOLD)))
 124       html += "<b>";
 125    else
 126       if(si.weight != wxBOLD && ( styleInfo && (styleInfo->weight == wxBOLD)))
 127          html += "</b>";
 128
 129    if(si.style == wxSLANT)
 130       si.style = wxITALIC; // the same for html
 131
 132    if((si.style == wxITALIC) && ( (!styleInfo) || (styleInfo->style != wxITALIC)))
 133       html += "<i>";
 134    else
 135       if(si.style != wxITALIC && ( styleInfo && (styleInfo->style == wxITALIC)))
 136          html += "</i>";
 137
 138    if(si.underline && ( (!styleInfo) || ! styleInfo->underline))
 139       html += "<u>";
 140    else if(si.underline == false && ( styleInfo && styleInfo->underline))
 141       html += "</u>";
 142
 143
 144    *styleInfo = si; // update last style info
 145
 146    return html;
 147 }
 148
 149
 150
 151 wxLayoutExportStatus::wxLayoutExportStatus(wxLayoutList *list)
 152 {
 153    list->GetDefaults()->GetStyle(&m_si);
 154    m_line = list->GetFirstLine();
 155    m_iterator = m_line->GetFirstObject();
 156 }
 157
 158
 159
 160 #define   WXLO_IS_TEXT(type) \
 161 ( type == WXLO_TYPE_TEXT \
 162   || (type == WXLO_TYPE_CMD \
 163       && mode == WXLO_EXPORT_AS_HTML))
 164
 165
 166 wxLayoutExportObject *wxLayoutExport(wxLayoutExportStatus *status,
 167                                      int mode, int flags)
 168 {
 169    wxASSERT(status);
 170    wxLayoutExportObject * export;
 171
 172    if(status->m_iterator == NULLIT) // end of line
 173    {
 174       if(!status->m_line || status->m_line->GetNextLine() == NULL)
 175          // reached end of list
 176          return NULL;
 177    }
 178    export = new wxLayoutExportObject();
 179    wxLayoutObjectType type;
 180    if(status->m_iterator != NULLIT)
 181    {
 182       type = (** status->m_iterator).GetType();
 183       if( mode == WXLO_EXPORT_AS_OBJECTS || ! WXLO_IS_TEXT(type)) // simple case
 184       {
 185          export->type = WXLO_EXPORT_OBJECT;
 186          export->content.object = *status->m_iterator;
 187          status->m_iterator++;
 188          return export;
 189       }
 190    }
 191    else
 192    {  // iterator == NULLIT
 193       if(mode == WXLO_EXPORT_AS_OBJECTS)
 194       {
 195          export->type = WXLO_EXPORT_EMPTYLINE;
 196          export->content.object = NULL; //empty line
 197          status->m_line = status->m_line->GetNextLine();
 198          if(status->m_line)
 199             status->m_iterator = status->m_line->GetFirstObject();
 200          return export;
 201       }
 202       else
 203          type = WXLO_TYPE_TEXT;
 204    }
 205
 206    wxString *str = new wxString();
 207    // text must be concatenated
 208    for(;;)
 209    {
 210       while(status->m_iterator == NULLIT)
 211       {
 212          if(flags & WXLO_EXPORT_AS_HTML)
 213             *str += "<br>";
 214          if(flags & WXLO_EXPORT_WITH_CRLF)
 215             *str += "\r\n";
 216          else
 217             *str += '\n';
 218
 219          status->m_line = status->m_line->GetNextLine();
 220          if(status->m_line)
 221             status->m_iterator = status->m_line->GetFirstObject();
 222          else
 223             break; // end of list
 224       }
 225       if(! status->m_line)  // reached end of list, fall through
 226          break;
 227       type = (** status->m_iterator).GetType();
 228       if(type == WXLO_TYPE_ICON)
 229          break;
 230       switch(type)
 231       {
 232       case WXLO_TYPE_TEXT:
 233          *str += ((wxLayoutObjectText *)*status->m_iterator)->GetText();
 234          break;
 235       case WXLO_TYPE_CMD:
 236          wxASSERT_MSG( mode == WXLO_EXPORT_AS_HTML,
 237                        "reached cmd object in text mode" );
 238
 239          *str += wxLayoutExportCmdAsHTML(*(wxLayoutObjectCmd const
 240                                            *)*status->m_iterator, & status->m_si);
 241          break;
 242       default:  // ignore icons
 243          ;
 244       }
 245       status->m_iterator++;
 246    }
 247
 248    export->type = (mode == WXLO_EXPORT_AS_HTML)
 249       ?  WXLO_EXPORT_HTML : WXLO_EXPORT_TEXT;
 250    export->content.text = str;
 251    return export;
 252 }
 253