include/wx/richtext/richtexthtml.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/richtext/richtexthtml.h
   3 // Purpose:     HTML I/O for wxRichTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     2005-09-30
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_RICHTEXTHTML_H_
  13 #define _WX_RICHTEXTHTML_H_
  14
  15 /*!
  16  * Includes
  17  */
  18
  19 #include "wx/richtext/richtextbuffer.h"
  20
  21 /*!
  22  * wxRichTextHTMLHandler
  23  */
  24
  25 class WXDLLIMPEXP_RICHTEXT wxRichTextHTMLHandler: public wxRichTextFileHandler
  26 {
  27     DECLARE_CLASS(wxRichTextHTMLHandler)
  28 public:
  29     wxRichTextHTMLHandler(const wxString& name = wxT("HTML"), const wxString& ext = wxT("html"), int type = wxRICHTEXT_TYPE_HTML)
  30         : wxRichTextFileHandler(name, ext, type)
  31         { }
  32
  33     /// Can we save using this handler?
  34     virtual bool CanSave() const { return true; }
  35
  36     /// Can we load using this handler?
  37     virtual bool CanLoad() const { return false; }
  38
  39     /// Can we handle this filename (if using files)? By default, checks the extension.
  40     virtual bool CanHandle(const wxString& filename) const;
  41
  42 protected:
  43
  44 #if wxUSE_STREAMS
  45     virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream);
  46     virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream);
  47 #endif
  48
  49     /// Output character formatting
  50     virtual void BeginCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, const wxTextAttrEx& paraStyle, wxOutputStream& stream );
  51     virtual void EndCharacterFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, const wxTextAttrEx& paraStyle, wxOutputStream& stream );
  52
  53     /// Output paragraph formatting
  54     virtual void OutputParagraphFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream/*, bool start*/);
  55
  56     /// Converts an image to its base64 equivalent
  57     void Image_to_Base64(wxRichTextImage* image, wxOutputStream& stream);
  58
  59     /// Builds required indentation
  60     void Indent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
  61
  62     /// Left indent
  63     void LIndent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
  64
  65     /// Converts from pt to size property compatible height
  66     long Pt_To_Size(long size);
  67
  68     /// Typical base64 encoder
  69     wxChar* b64enc( unsigned char* input, size_t in_len );
  70
  71     /// Gets the mime type of the given wxBITMAP_TYPE
  72     const wxChar* GetMimeType(int imageType);
  73
  74     /// Gets the html equivalent of the specified value
  75     wxString GetAlignment( const wxTextAttrEx& thisStyle );
  76
  77     /// Generates &nbsp; array for indentations
  78     wxString SymbolicIndent(long indent);
  79
  80     /// Finds the html equivalent of the specified bullet
  81     void TypeOfList( const wxTextAttrEx& thisStyle, wxString& tag );
  82
  83     /// Closes existings or Opens new tables for navigation to an item's horizontal position.
  84     void NavigateToListPosition( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
  85
  86     /// Indentation values of the table tags
  87     wxArrayInt m_indents;
  88
  89     /// Horizontal position of the current table
  90     long m_indent;
  91
  92     /// Is there any opened font tag
  93     bool m_font;
  94
  95     /// Is there any opened ul/ol tag
  96     bool m_list;
  97
  98     /// type of list, ul or ol?
  99     bool m_is_ul;
 100
 101 };
 102
 103 #endif
 104     // _WX_RICHTEXTXML_H_