src/html/m_pre.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        m_pre.cpp
   3 // Purpose:     wxHtml module for <PRE> ... </PRE> tag (code citation)
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation
  12 #endif
  13
  14 #include "wx/wxprec.h"
  15
  16 #include "wx/defs.h"
  17 #if wxUSE_HTML && wxUSE_STREAMS
  18 #ifdef __BORLANDC__
  19 #pragma hdrstop
  20 #endif
  21
  22 #ifndef WXPRECOMP
  23 #endif
  24
  25 #include "wx/html/forcelnk.h"
  26 #include "wx/html/m_templ.h"
  27
  28 #include "wx/html/htmlcell.h"
  29 #include "wx/tokenzr.h"
  30 #include "wx/encconv.h"
  31
  32 FORCE_LINK_ME(m_pre)
  33
  34 // replaces '\t', ' ' and '\n' with HTML markup:
  35 static wxString LINKAGEMODE HtmlizeWhitespaces(const wxString& str)
  36 {
  37     wxString out;
  38     size_t len = str.Len();
  39     for (size_t i = 0; i < len; i++)
  40     {
  41         switch (str[i])
  42         {
  43             case wxT('<'):
  44                 while (i < len && str[i] != wxT('>'))
  45                     out << str[i++];
  46                 out << wxT('>');
  47                 break;
  48             case wxT(' '):
  49                 out << wxT("&nbsp;");
  50                 break;
  51             case wxT('\n'):
  52                 out << wxT("<br>");
  53                 break;
  54             case wxT('\t'):
  55                 {
  56                     for (size_t j = 8 - i%8; j > 0; j--)
  57                         out << wxT("&nbsp;");
  58                 }
  59                 break;
  60             default:
  61                 out << str[i];
  62                 break;
  63         }
  64     }
  65     return out;
  66 }
  67
  68
  69 //-----------------------------------------------------------------------------
  70 // The list handler:
  71 //-----------------------------------------------------------------------------
  72
  73
  74 TAG_HANDLER_BEGIN(PRE, "PRE")
  75     TAG_HANDLER_CONSTR(PRE) { }
  76
  77     TAG_HANDLER_PROC(tag)
  78     {
  79         wxHtmlContainerCell *c;
  80
  81         int fixed = m_WParser->GetFontFixed(),
  82             italic = m_WParser->GetFontItalic(),
  83             underlined = m_WParser->GetFontUnderlined(),
  84             bold = m_WParser->GetFontBold(),
  85             fsize = m_WParser->GetFontSize();
  86
  87         c = m_WParser->GetContainer();
  88         m_WParser->SetFontUnderlined(FALSE);
  89         m_WParser->SetFontBold(FALSE);
  90         m_WParser->SetFontItalic(FALSE);
  91         m_WParser->SetFontFixed(TRUE);
  92         m_WParser->SetFontSize(3);
  93         c->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
  94
  95         m_WParser->CloseContainer();
  96         c = m_WParser->OpenContainer();
  97         c->SetAlignHor(wxHTML_ALIGN_LEFT);
  98         c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
  99
 100         wxString srcMid =
 101             m_WParser->GetSource()->Mid(tag.GetBeginPos(),
 102                                         tag.GetEndPos1() - tag.GetBeginPos());
 103         // It is safe to temporarily change the source being parsed,
 104         // provided we restore the state back after parsing
 105         m_Parser->SetSourceAndSaveState(HtmlizeWhitespaces(srcMid));
 106         m_Parser->DoParsing();
 107         m_Parser->RestoreState();
 108
 109         m_WParser->CloseContainer();
 110         c = m_WParser->OpenContainer();
 111
 112         m_WParser->SetFontUnderlined(underlined);
 113         m_WParser->SetFontBold(bold);
 114         m_WParser->SetFontItalic(italic);
 115         m_WParser->SetFontFixed(fixed);
 116         m_WParser->SetFontSize(fsize);
 117         c->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
 118
 119         return TRUE;
 120     }
 121
 122 TAG_HANDLER_END(PRE)
 123
 124
 125
 126
 127
 128 TAGS_MODULE_BEGIN(Pre)
 129
 130     TAGS_MODULE_ADD(PRE)
 131
 132 TAGS_MODULE_END(Pre)
 133
 134 #endif