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     size_t linepos = 0;
  40     for (size_t i = 0; i < len; i++)
  41     {
  42         switch (str[i])
  43         {
  44             case wxT('<'):
  45                 while (i < len && str[i] != wxT('>'))
  46                 {
  47                     out << str[i++];
  48                     linepos++;
  49                 }
  50                 out << wxT('>');
  51                 linepos++;
  52                 break;
  53             case wxT(' '):
  54                 out << wxT("&nbsp;");
  55                 linepos++;
  56                 break;
  57             case wxT('\n'):
  58                 out << wxT("<br>");
  59                 linepos = 0;
  60                 break;
  61             case wxT('\t'):
  62                 {
  63                     for (size_t j = 8 - linepos % 8; j > 0; j--)
  64                         out << wxT("&nbsp;");
  65                     linepos += 8 - linepos % 8;
  66                 }
  67                 break;
  68             default:
  69                 out << str[i];
  70                 linepos++;
  71                 break;
  72         }
  73     }
  74     return out;
  75 }
  76
  77
  78 //-----------------------------------------------------------------------------
  79 // The list handler:
  80 //-----------------------------------------------------------------------------
  81
  82
  83 TAG_HANDLER_BEGIN(PRE, "PRE")
  84     TAG_HANDLER_CONSTR(PRE) { }
  85
  86     TAG_HANDLER_PROC(tag)
  87     {
  88         wxHtmlContainerCell *c;
  89
  90         int fixed = m_WParser->GetFontFixed(),
  91             italic = m_WParser->GetFontItalic(),
  92             underlined = m_WParser->GetFontUnderlined(),
  93             bold = m_WParser->GetFontBold(),
  94             fsize = m_WParser->GetFontSize();
  95
  96         c = m_WParser->GetContainer();
  97         m_WParser->SetFontUnderlined(false);
  98         m_WParser->SetFontBold(false);
  99         m_WParser->SetFontItalic(false);
 100         m_WParser->SetFontFixed(true);
 101         m_WParser->SetFontSize(3);
 102         c->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
 103
 104         m_WParser->CloseContainer();
 105         c = m_WParser->OpenContainer();
 106         c->SetWidthFloat(tag);
 107         c = m_WParser->OpenContainer();
 108         c->SetAlignHor(wxHTML_ALIGN_LEFT);
 109         c->SetIndent(m_WParser->GetCharHeight(), wxHTML_INDENT_TOP);
 110
 111         wxString srcMid =
 112             m_WParser->GetSource()->Mid(tag.GetBeginPos(),
 113                                         tag.GetEndPos1() - tag.GetBeginPos());
 114         // It is safe to temporarily change the source being parsed,
 115         // provided we restore the state back after parsing
 116         m_Parser->SetSourceAndSaveState(HtmlizeWhitespaces(srcMid));
 117         m_Parser->DoParsing();
 118         m_Parser->RestoreState();
 119
 120         m_WParser->CloseContainer();
 121         m_WParser->CloseContainer();
 122         c = m_WParser->OpenContainer();
 123
 124         m_WParser->SetFontUnderlined(underlined);
 125         m_WParser->SetFontBold(bold);
 126         m_WParser->SetFontItalic(italic);
 127         m_WParser->SetFontFixed(fixed);
 128         m_WParser->SetFontSize(fsize);
 129         c->InsertCell(new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
 130
 131         return true;
 132     }
 133
 134 TAG_HANDLER_END(PRE)
 135
 136
 137
 138
 139
 140 TAGS_MODULE_BEGIN(Pre)
 141
 142     TAGS_MODULE_ADD(PRE)
 143
 144 TAGS_MODULE_END(Pre)
 145
 146 #endif