src/richtext/richtexthtml.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/richtext/richtexthtml.cpp
// Purpose:     HTML I/O for wxRichTextCtrl
// Author:      Julian Smart
// Modified by:
// Created:     2005-09-30
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_RICHTEXT

#include "wx/richtext/richtexthtml.h"
#include "wx/richtext/richtextstyles.h"

#ifndef WX_PRECOMP
#endif

#include "wx/filename.h"
#include "wx/wfstream.h"
#include "wx/txtstrm.h"

#if wxUSE_FILESYSTEM
#include "wx/filesys.h"
#include "wx/fs_mem.h"
#endif

IMPLEMENT_DYNAMIC_CLASS(wxRichTextHTMLHandler, wxRichTextFileHandler)

int wxRichTextHTMLHandler::sm_fileCounter = 1;

wxRichTextHTMLHandler::wxRichTextHTMLHandler(const wxString& name, const wxString& ext, int type)
    : wxRichTextFileHandler(name, ext, type), m_buffer(NULL), m_font(false), m_inTable(false)
{
    m_fontSizeMapping.Add(8);
    m_fontSizeMapping.Add(10);
    m_fontSizeMapping.Add(13);
    m_fontSizeMapping.Add(17);
    m_fontSizeMapping.Add(22);
    m_fontSizeMapping.Add(30);
    m_fontSizeMapping.Add(100);
}

/// Can we handle this filename (if using files)? By default, checks the extension.
bool wxRichTextHTMLHandler::CanHandle(const wxString& filename) const
{
    wxString path, file, ext;
    wxSplitPath(filename, & path, & file, & ext);

    return (ext.Lower() == wxT("html") || ext.Lower() == wxT("htm"));
}


#if wxUSE_STREAMS
bool wxRichTextHTMLHandler::DoLoadFile(wxRichTextBuffer *WXUNUSED(buffer), wxInputStream& WXUNUSED(stream))
{
    return false;
}

/*
 * We need to output only _changes_ in character formatting.
 */

bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
{
    m_buffer = buffer;

    ClearTemporaryImageLocations();

    buffer->Defragment();

    wxTextOutputStream str(stream);

    wxTextAttr currentParaStyle = buffer->GetAttributes();
    wxTextAttr currentCharStyle = buffer->GetAttributes();

    if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
        str << wxT("<html><head></head><body>\n");

    OutputFont(currentParaStyle, str);

    m_font = false;
    m_inTable = false;

    m_indents.Clear();
    m_listTypes.Clear();

    wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
    while (node)
    {
        wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
        wxASSERT (para != NULL);

        if (para)
        {
            wxTextAttr paraStyle(para->GetCombinedAttributes());

            BeginParagraphFormatting(currentParaStyle, paraStyle, str);

            wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
            while (node2)
            {
                wxRichTextObject* obj = node2->GetData();
                wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
                if (textObj && !textObj->IsEmpty())
                {
                    wxTextAttr charStyle(para->GetCombinedAttributes(obj->GetAttributes()));
                    BeginCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);

                    wxString text = textObj->GetText();

                    if (charStyle.HasTextEffects() && (charStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_CAPITALS))
                        text.MakeUpper();

                    wxString toReplace = wxRichTextLineBreakChar;
                    text.Replace(toReplace, wxT("<br>"));

                    str << text;

                    EndCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
                }

                wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
                if( image && (!image->IsEmpty() || image->GetImageBlock().GetData()))
                    WriteImage( image, stream );

                node2 = node2->GetNext();
            }

            EndParagraphFormatting(currentParaStyle, paraStyle, str);

            str << wxT("\n");
        }
        node = node->GetNext();
    }

    CloseLists(-1, str);

    str << wxT("</font>");

    if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
        str << wxT("</body></html>");

    str << wxT("\n");

    m_buffer = NULL;

    return true;
}

void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxTextAttr& currentStyle, const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& str)
{
    wxString style;

    // Is there any change in the font properties of the item?
    if (thisStyle.GetFontFaceName() != currentStyle.GetFontFaceName())
    {
        wxString faceName(thisStyle.GetFontFaceName());
        style += wxString::Format(wxT(" face=\"%s\""), faceName.c_str());
    }
    if (thisStyle.GetFontSize() != currentStyle.GetFontSize())
        style += wxString::Format(wxT(" size=\"%ld\""), PtToSize(thisStyle.GetFontSize()));
    if (thisStyle.GetTextColour() != currentStyle.GetTextColour() )
    {
        wxString color(thisStyle.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX));
        style += wxString::Format(wxT(" color=\"%s\""), color.c_str());
    }

    if (style.size())
    {
        str << wxString::Format(wxT("<font %s >"), style.c_str());
        m_font = true;
    }

    if (thisStyle.GetFontWeight() == wxBOLD)
        str << wxT("<b>");
    if (thisStyle.GetFontStyle() == wxITALIC)
        str << wxT("<i>");
    if (thisStyle.GetFontUnderlined())
        str << wxT("<u>");

    if (thisStyle.HasURL())
        str << wxT("<a href=\"") << thisStyle.GetURL() << wxT("\">");
}

void wxRichTextHTMLHandler::EndCharacterFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& stream)
{
    if (thisStyle.HasURL())
        stream << wxT("</a>");

    if (thisStyle.GetFontUnderlined())
        stream << wxT("</u>");
    if (thisStyle.GetFontStyle() == wxITALIC)
        stream << wxT("</i>");
    if (thisStyle.GetFontWeight() == wxBOLD)
        stream << wxT("</b>");

    if (m_font)
    {
        m_font = false;
        stream << wxT("</font>");
    }
}

/// Begin paragraph formatting
void wxRichTextHTMLHandler::BeginParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& str)
{
    if (thisStyle.HasPageBreak())
    {
        str << wxT("<div style=\"page-break-after:always\"></div>\n");
    }

    if (thisStyle.HasLeftIndent() && thisStyle.GetLeftIndent() != 0)
    {
        if (thisStyle.HasBulletStyle())
        {
            int indent = thisStyle.GetLeftIndent();

            // Close levels high than this
            CloseLists(indent, str);

            if (m_indents.GetCount() > 0 && indent == m_indents.Last())
            {
                // Same level, no need to start a new list
            }
            else if (m_indents.GetCount() == 0 || indent > m_indents.Last())
            {
                m_indents.Add(indent);

                wxString tag;
                int listType = TypeOfList(thisStyle, tag);
                m_listTypes.Add(listType);

                wxString align = GetAlignment(thisStyle);
                str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());

                str << tag;
            }

            str << wxT("<li> ");
        }
        else
        {
            CloseLists(-1, str);

            wxString align = GetAlignment(thisStyle);
            str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());

            // Use a table
            int indentTenthsMM = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
            // TODO: convert to pixels
            int indentPixels = indentTenthsMM/4;
            str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);

            OutputFont(thisStyle, str);

            if (thisStyle.GetLeftSubIndent() < 0)
            {
                str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
            }

            m_inTable = true;
        }
    }
    else
    {
        CloseLists(-1, str);

        wxString align = GetAlignment(thisStyle);
        str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
    }
}

/// End paragraph formatting
void wxRichTextHTMLHandler::EndParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& stream)
{
    if (m_inTable)
    {
        if (thisStyle.HasFont())
            stream << wxT("</font>");

        stream << wxT("</td></tr></table></p>\n");
        m_inTable = false;
    }
    else
        stream << wxT("</p>\n");
}

/// Closes lists to level (-1 means close all)
void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
{
    // Close levels high than this
    int i = m_indents.GetCount()-1;
    while (i >= 0)
    {
        int l = m_indents[i];
        if (l > level)
        {
            if (m_listTypes[i] == 0)
                str << wxT("</ol>");
            else
                str << wxT("</ul>");
            m_indents.RemoveAt(i);
            m_listTypes.RemoveAt(i);
        }
        else
            break;
        i --;
     }
}

/// Output font tag
void wxRichTextHTMLHandler::OutputFont(const wxTextAttr& style, wxTextOutputStream& stream)
{
    if (style.HasFont())
    {
        stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
        if (style.HasTextColour())
            stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
        stream << wxT(" >");
    }
}

int wxRichTextHTMLHandler::TypeOfList( const wxTextAttr& thisStyle, wxString& tag )
{
    // We can use number attribute of li tag but not all the browsers support it.
    // also wxHtmlWindow doesn't support type attribute.

    bool m_is_ul = false;
    if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
        tag = wxT("<ol type=\"1\">");
    else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
        tag = wxT("<ol type=\"A\">");
    else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
        tag = wxT("<ol type=\"a\">");
    else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
        tag = wxT("<ol type=\"I\">");
    else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
        tag = wxT("<ol type=\"i\">");
    else
    {
        tag = wxT("<ul>");
        m_is_ul = true;
    }

    if (m_is_ul)
        return 1;
    else
        return 0;
}

wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttr& thisStyle )
{
    switch( thisStyle.GetAlignment() )
    {
    case wxTEXT_ALIGNMENT_LEFT:
        return  wxT("left");
    case wxTEXT_ALIGNMENT_RIGHT:
        return wxT("right");
    case wxTEXT_ALIGNMENT_CENTER:
        return wxT("center");
    case wxTEXT_ALIGNMENT_JUSTIFIED:
        return wxT("justify");
    default:
        return wxT("left");
    }
}

void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
{
    wxTextOutputStream str(stream);

    str << wxT("<img src=\"");

#if wxUSE_FILESYSTEM
    if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
    {
        if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
            image->LoadFromBlock();
        if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
            image->MakeBlock();

        if (image->GetImage().Ok())
        {
            wxString ext(image->GetImageBlock().GetExtension());
            wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext));
            wxMemoryFSHandler::AddFile(tempFilename, image->GetImage(), image->GetImageBlock().GetImageType());

            m_imageLocations.Add(tempFilename);

            str << wxT("memory:") << tempFilename;
        }
        else
            str << wxT("memory:?");

        sm_fileCounter ++;
    }
    else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
    {
        if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
            image->LoadFromBlock();
        if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
            image->MakeBlock();

        if (image->GetImage().Ok())
        {
            wxString tempDir(GetTempDir());
            if (tempDir.IsEmpty())
                tempDir = wxFileName::GetTempDir();

            wxString ext(image->GetImageBlock().GetExtension());
            wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir, sm_fileCounter, ext));
            image->GetImageBlock().Write(tempFilename);

            m_imageLocations.Add(tempFilename);

            str << wxFileSystem::FileNameToURL(tempFilename);
        }
        else
            str << wxT("file:?");

        sm_fileCounter ++;
    }
    else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
#endif
    {
        str << wxT("data:");
        str << GetMimeType(image->GetImageBlock().GetImageType());
        str << wxT(";base64,");

        if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
            image->MakeBlock();

        wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
        str << data;

        delete[] data;
    }

    str << wxT("\" />");
}

long wxRichTextHTMLHandler::PtToSize(long size)
{
    int i;
    int len = m_fontSizeMapping.GetCount();
    for (i = 0; i < len; i++)
        if (size <= m_fontSizeMapping[i])
            return i+1;
    return 7;
}

wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
{
    wxString in;
    for(;indent > 0; indent -= 20)
        in.Append( wxT("&nbsp;") );
    return in;
}

const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
{
    switch(imageType)
    {
    case wxBITMAP_TYPE_BMP:
        return wxT("image/bmp");
    case wxBITMAP_TYPE_TIF:
        return wxT("image/tiff");
    case wxBITMAP_TYPE_GIF:
        return wxT("image/gif");
    case wxBITMAP_TYPE_PNG:
        return wxT("image/png");
    case wxBITMAP_TYPE_JPEG:
        return wxT("image/jpeg");
    default:
        return wxT("image/unknown");
    }
}

// exim-style base64 encoder
wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
{
    // elements of enc64 array must be 8 bit values
    // otherwise encoder will fail
    // hmmm.. Does wxT macro define a char as 16 bit value
    // when compiling with UNICODE option?
    static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
    wxChar* output = new wxChar[4*((in_len+2)/3)+1];
    wxChar* p = output;

    while( in_len-- > 0 )
    {
        register wxChar a, b;

        a = *input++;

        *p++ = enc64[ (a >> 2) & 0x3f ];

        if( in_len-- == 0 )
        {
            *p++ = enc64[ (a << 4 ) & 0x30 ];
            *p++ = '=';
            *p++ = '=';
            break;
        }

        b = *input++;

        *p++ = enc64[(( a << 4 ) | ((b >> 4) &0xf )) & 0x3f];

        if( in_len-- == 0 )
        {
            *p++ = enc64[ (b << 2) & 0x3f ];
            *p++ = '=';
            break;
        }

        a = *input++;

        *p++ = enc64[ ((( b << 2 ) & 0x3f ) | ((a >> 6)& 0x3)) & 0x3f ];

        *p++ = enc64[ a & 0x3f ];
    }
    *p = 0;

    return output;
}
#endif
// wxUSE_STREAMS

/// Delete the in-memory or temporary files generated by the last operation
bool wxRichTextHTMLHandler::DeleteTemporaryImages()
{
    return DeleteTemporaryImages(GetFlags(), m_imageLocations);
}

/// Delete the in-memory or temporary files generated by the last operation
bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
{
    size_t i;
    for (i = 0; i < imageLocations.GetCount(); i++)
    {
        wxString location = imageLocations[i];

        if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
        {
#if wxUSE_FILESYSTEM
            wxMemoryFSHandler::RemoveFile(location);
#endif
        }
        else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
        {
            if (wxFileExists(location))
                wxRemoveFile(location);
        }
    }

    return true;
}


#endif
// wxUSE_RICHTEXT
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/richtext/richtexthtml.cpp
	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	// For compilers that support precompilation, includes "wx.h".
	13	#include "wx/wxprec.h"
	14
	15	#ifdef __BORLANDC__
	16	#pragma hdrstop
	17	#endif
	18
	19	#if wxUSE_RICHTEXT
	20
	21	#include "wx/richtext/richtexthtml.h"
	22	#include "wx/richtext/richtextstyles.h"
	23
	24	#ifndef WX_PRECOMP
	25	#endif
	26
	27	#include "wx/filename.h"
	28	#include "wx/wfstream.h"
	29	#include "wx/txtstrm.h"
	30
	31	#if wxUSE_FILESYSTEM
	32	#include "wx/filesys.h"
	33	#include "wx/fs_mem.h"
	34	#endif
	35
	36	IMPLEMENT_DYNAMIC_CLASS(wxRichTextHTMLHandler, wxRichTextFileHandler)
	37
	38	int wxRichTextHTMLHandler::sm_fileCounter = 1;
	39
	40	wxRichTextHTMLHandler::wxRichTextHTMLHandler(const wxString& name, const wxString& ext, int type)
	41	: wxRichTextFileHandler(name, ext, type), m_buffer(NULL), m_font(false), m_inTable(false)
	42	{
	43	m_fontSizeMapping.Add(8);
	44	m_fontSizeMapping.Add(10);
	45	m_fontSizeMapping.Add(13);
	46	m_fontSizeMapping.Add(17);
	47	m_fontSizeMapping.Add(22);
	48	m_fontSizeMapping.Add(30);
	49	m_fontSizeMapping.Add(100);
	50	}
	51
	52	/// Can we handle this filename (if using files)? By default, checks the extension.
	53	bool wxRichTextHTMLHandler::CanHandle(const wxString& filename) const
	54	{
	55	wxString path, file, ext;
	56	wxSplitPath(filename, & path, & file, & ext);
	57
	58	return (ext.Lower() == wxT("html") \|\| ext.Lower() == wxT("htm"));
	59	}
	60
	61
	62	#if wxUSE_STREAMS
	63	bool wxRichTextHTMLHandler::DoLoadFile(wxRichTextBuffer *WXUNUSED(buffer), wxInputStream& WXUNUSED(stream))
	64	{
	65	return false;
	66	}
	67
	68	/*
	69	* We need to output only _changes_ in character formatting.
	70	*/
	71
	72	bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
	73	{
	74	m_buffer = buffer;
	75
	76	ClearTemporaryImageLocations();
	77
	78	buffer->Defragment();
	79
	80	wxTextOutputStream str(stream);
	81
	82	wxTextAttr currentParaStyle = buffer->GetAttributes();
	83	wxTextAttr currentCharStyle = buffer->GetAttributes();
	84
	85	if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
	86	str << wxT("<html><head></head><body>\n");
	87
	88	OutputFont(currentParaStyle, str);
	89
	90	m_font = false;
	91	m_inTable = false;
	92
	93	m_indents.Clear();
	94	m_listTypes.Clear();
	95
	96	wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
	97	while (node)
	98	{
	99	wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
	100	wxASSERT (para != NULL);
	101
	102	if (para)
	103	{
	104	wxTextAttr paraStyle(para->GetCombinedAttributes());
	105
	106	BeginParagraphFormatting(currentParaStyle, paraStyle, str);
	107
	108	wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
	109	while (node2)
	110	{
	111	wxRichTextObject* obj = node2->GetData();
	112	wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
	113	if (textObj && !textObj->IsEmpty())
	114	{
	115	wxTextAttr charStyle(para->GetCombinedAttributes(obj->GetAttributes()));
	116	BeginCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	117
	118	wxString text = textObj->GetText();
	119
	120	if (charStyle.HasTextEffects() && (charStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_CAPITALS))
	121	text.MakeUpper();
	122
	123	wxString toReplace = wxRichTextLineBreakChar;
	124	text.Replace(toReplace, wxT("<br>"));
	125
	126	str << text;
	127
	128	EndCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	129	}
	130
	131	wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
	132	if( image && (!image->IsEmpty() \|\| image->GetImageBlock().GetData()))
	133	WriteImage( image, stream );
	134
	135	node2 = node2->GetNext();
	136	}
	137
	138	EndParagraphFormatting(currentParaStyle, paraStyle, str);
	139
	140	str << wxT("\n");
	141	}
	142	node = node->GetNext();
	143	}
	144
	145	CloseLists(-1, str);
	146
	147	str << wxT("</font>");
	148
	149	if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
	150	str << wxT("</body></html>");
	151
	152	str << wxT("\n");
	153
	154	m_buffer = NULL;
	155
	156	return true;
	157	}
	158
	159	void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxTextAttr& currentStyle, const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& str)
	160	{
	161	wxString style;
	162
	163	// Is there any change in the font properties of the item?
	164	if (thisStyle.GetFontFaceName() != currentStyle.GetFontFaceName())
	165	{
	166	wxString faceName(thisStyle.GetFontFaceName());
	167	style += wxString::Format(wxT(" face=\"%s\""), faceName.c_str());
	168	}
	169	if (thisStyle.GetFontSize() != currentStyle.GetFontSize())
	170	style += wxString::Format(wxT(" size=\"%ld\""), PtToSize(thisStyle.GetFontSize()));
	171	if (thisStyle.GetTextColour() != currentStyle.GetTextColour() )
	172	{
	173	wxString color(thisStyle.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX));
	174	style += wxString::Format(wxT(" color=\"%s\""), color.c_str());
	175	}
	176
	177	if (style.size())
	178	{
	179	str << wxString::Format(wxT("<font %s >"), style.c_str());
	180	m_font = true;
	181	}
	182
	183	if (thisStyle.GetFontWeight() == wxBOLD)
	184	str << wxT("<b>");
	185	if (thisStyle.GetFontStyle() == wxITALIC)
	186	str << wxT("<i>");
	187	if (thisStyle.GetFontUnderlined())
	188	str << wxT("<u>");
	189
	190	if (thisStyle.HasURL())
	191	str << wxT("<a href=\"") << thisStyle.GetURL() << wxT("\">");
	192	}
	193
	194	void wxRichTextHTMLHandler::EndCharacterFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& stream)
	195	{
	196	if (thisStyle.HasURL())
	197	stream << wxT("</a>");
	198
	199	if (thisStyle.GetFontUnderlined())
	200	stream << wxT("</u>");
	201	if (thisStyle.GetFontStyle() == wxITALIC)
	202	stream << wxT("</i>");
	203	if (thisStyle.GetFontWeight() == wxBOLD)
	204	stream << wxT("</b>");
	205
	206	if (m_font)
	207	{
	208	m_font = false;
	209	stream << wxT("</font>");
	210	}
	211	}
	212
	213	/// Begin paragraph formatting
	214	void wxRichTextHTMLHandler::BeginParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& str)
	215	{
	216	if (thisStyle.HasPageBreak())
	217	{
	218	str << wxT("<div style=\"page-break-after:always\"></div>\n");
	219	}
	220
	221	if (thisStyle.HasLeftIndent() && thisStyle.GetLeftIndent() != 0)
	222	{
	223	if (thisStyle.HasBulletStyle())
	224	{
	225	int indent = thisStyle.GetLeftIndent();
	226
	227	// Close levels high than this
	228	CloseLists(indent, str);
	229
	230	if (m_indents.GetCount() > 0 && indent == m_indents.Last())
	231	{
	232	// Same level, no need to start a new list
	233	}
	234	else if (m_indents.GetCount() == 0 \|\| indent > m_indents.Last())
	235	{
	236	m_indents.Add(indent);
	237
	238	wxString tag;
	239	int listType = TypeOfList(thisStyle, tag);
	240	m_listTypes.Add(listType);
	241
	242	wxString align = GetAlignment(thisStyle);
	243	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	244
	245	str << tag;
	246	}
	247
	248	str << wxT("<li> ");
	249	}
	250	else
	251	{
	252	CloseLists(-1, str);
	253
	254	wxString align = GetAlignment(thisStyle);
	255	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	256
	257	// Use a table
	258	int indentTenthsMM = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
	259	// TODO: convert to pixels
	260	int indentPixels = indentTenthsMM/4;
	261	str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
	262
	263	OutputFont(thisStyle, str);
	264
	265	if (thisStyle.GetLeftSubIndent() < 0)
	266	{
	267	str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
	268	}
	269
	270	m_inTable = true;
	271	}
	272	}
	273	else
	274	{
	275	CloseLists(-1, str);
	276
	277	wxString align = GetAlignment(thisStyle);
	278	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	279	}
	280	}
	281
	282	/// End paragraph formatting
	283	void wxRichTextHTMLHandler::EndParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& stream)
	284	{
	285	if (m_inTable)
	286	{
	287	if (thisStyle.HasFont())
	288	stream << wxT("</font>");
	289
	290	stream << wxT("</td></tr></table></p>\n");
	291	m_inTable = false;
	292	}
	293	else
	294	stream << wxT("</p>\n");
	295	}
	296
	297	/// Closes lists to level (-1 means close all)
	298	void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
	299	{
	300	// Close levels high than this
	301	int i = m_indents.GetCount()-1;
	302	while (i >= 0)
	303	{
	304	int l = m_indents[i];
	305	if (l > level)
	306	{
	307	if (m_listTypes[i] == 0)
	308	str << wxT("</ol>");
	309	else
	310	str << wxT("</ul>");
	311	m_indents.RemoveAt(i);
	312	m_listTypes.RemoveAt(i);
	313	}
	314	else
	315	break;
	316	i --;
	317	}
	318	}
	319
	320	/// Output font tag
	321	void wxRichTextHTMLHandler::OutputFont(const wxTextAttr& style, wxTextOutputStream& stream)
	322	{
	323	if (style.HasFont())
	324	{
	325	stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
	326	if (style.HasTextColour())
	327	stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
	328	stream << wxT(" >");
	329	}
	330	}
	331
	332	int wxRichTextHTMLHandler::TypeOfList( const wxTextAttr& thisStyle, wxString& tag )
	333	{
	334	// We can use number attribute of li tag but not all the browsers support it.
	335	// also wxHtmlWindow doesn't support type attribute.
	336
	337	bool m_is_ul = false;
	338	if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC\|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
	339	tag = wxT("<ol type=\"1\">");
	340	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
	341	tag = wxT("<ol type=\"A\">");
	342	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
	343	tag = wxT("<ol type=\"a\">");
	344	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
	345	tag = wxT("<ol type=\"I\">");
	346	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
	347	tag = wxT("<ol type=\"i\">");
	348	else
	349	{
	350	tag = wxT("<ul>");
	351	m_is_ul = true;
	352	}
	353
	354	if (m_is_ul)
	355	return 1;
	356	else
	357	return 0;
	358	}
	359
	360	wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttr& thisStyle )
	361	{
	362	switch( thisStyle.GetAlignment() )
	363	{
	364	case wxTEXT_ALIGNMENT_LEFT:
	365	return wxT("left");
	366	case wxTEXT_ALIGNMENT_RIGHT:
	367	return wxT("right");
	368	case wxTEXT_ALIGNMENT_CENTER:
	369	return wxT("center");
	370	case wxTEXT_ALIGNMENT_JUSTIFIED:
	371	return wxT("justify");
	372	default:
	373	return wxT("left");
	374	}
	375	}
	376
	377	void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
	378	{
	379	wxTextOutputStream str(stream);
	380
	381	str << wxT("<img src=\"");
	382
	383	#if wxUSE_FILESYSTEM
	384	if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	385	{
	386	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	387	image->LoadFromBlock();
	388	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	389	image->MakeBlock();
	390
	391	if (image->GetImage().Ok())
	392	{
	393	wxString ext(image->GetImageBlock().GetExtension());
	394	wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext));
	395	wxMemoryFSHandler::AddFile(tempFilename, image->GetImage(), image->GetImageBlock().GetImageType());
	396
	397	m_imageLocations.Add(tempFilename);
	398
	399	str << wxT("memory:") << tempFilename;
	400	}
	401	else
	402	str << wxT("memory:?");
	403
	404	sm_fileCounter ++;
	405	}
	406	else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	407	{
	408	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	409	image->LoadFromBlock();
	410	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	411	image->MakeBlock();
	412
	413	if (image->GetImage().Ok())
	414	{
	415	wxString tempDir(GetTempDir());
	416	if (tempDir.IsEmpty())
	417	tempDir = wxFileName::GetTempDir();
	418
	419	wxString ext(image->GetImageBlock().GetExtension());
	420	wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir, sm_fileCounter, ext));
	421	image->GetImageBlock().Write(tempFilename);
	422
	423	m_imageLocations.Add(tempFilename);
	424
	425	str << wxFileSystem::FileNameToURL(tempFilename);
	426	}
	427	else
	428	str << wxT("file:?");
	429
	430	sm_fileCounter ++;
	431	}
	432	else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
	433	#endif
	434	{
	435	str << wxT("data:");
	436	str << GetMimeType(image->GetImageBlock().GetImageType());
	437	str << wxT(";base64,");
	438
	439	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	440	image->MakeBlock();
	441
	442	wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
	443	str << data;
	444
	445	delete[] data;
	446	}
	447
	448	str << wxT("\" />");
	449	}
	450
	451	long wxRichTextHTMLHandler::PtToSize(long size)
	452	{
	453	int i;
	454	int len = m_fontSizeMapping.GetCount();
	455	for (i = 0; i < len; i++)
	456	if (size <= m_fontSizeMapping[i])
	457	return i+1;
	458	return 7;
	459	}
	460
	461	wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
	462	{
	463	wxString in;
	464	for(;indent > 0; indent -= 20)
	465	in.Append( wxT(" ") );
	466	return in;
	467	}
	468
	469	const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
	470	{
	471	switch(imageType)
	472	{
	473	case wxBITMAP_TYPE_BMP:
	474	return wxT("image/bmp");
	475	case wxBITMAP_TYPE_TIF:
	476	return wxT("image/tiff");
	477	case wxBITMAP_TYPE_GIF:
	478	return wxT("image/gif");
	479	case wxBITMAP_TYPE_PNG:
	480	return wxT("image/png");
	481	case wxBITMAP_TYPE_JPEG:
	482	return wxT("image/jpeg");
	483	default:
	484	return wxT("image/unknown");
	485	}
	486	}
	487
	488	// exim-style base64 encoder
	489	wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
	490	{
	491	// elements of enc64 array must be 8 bit values
	492	// otherwise encoder will fail
	493	// hmmm.. Does wxT macro define a char as 16 bit value
	494	// when compiling with UNICODE option?
	495	static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
	496	wxChar* output = new wxChar[4*((in_len+2)/3)+1];
	497	wxChar* p = output;
	498
	499	while( in_len-- > 0 )
	500	{
	501	register wxChar a, b;
	502
	503	a = *input++;
	504
	505	*p++ = enc64[ (a >> 2) & 0x3f ];
	506
	507	if( in_len-- == 0 )
	508	{
	509	*p++ = enc64[ (a << 4 ) & 0x30 ];
	510	*p++ = '=';
	511	*p++ = '=';
	512	break;
	513	}
	514
	515	b = *input++;
	516
	517	*p++ = enc64[(( a << 4 ) \| ((b >> 4) &0xf )) & 0x3f];
	518
	519	if( in_len-- == 0 )
	520	{
	521	*p++ = enc64[ (b << 2) & 0x3f ];
	522	*p++ = '=';
	523	break;
	524	}
	525
	526	a = *input++;
	527
	528	*p++ = enc64[ ((( b << 2 ) & 0x3f ) \| ((a >> 6)& 0x3)) & 0x3f ];
	529
	530	*p++ = enc64[ a & 0x3f ];
	531	}
	532	*p = 0;
	533
	534	return output;
	535	}
	536	#endif
	537	// wxUSE_STREAMS
	538
	539	/// Delete the in-memory or temporary files generated by the last operation
	540	bool wxRichTextHTMLHandler::DeleteTemporaryImages()
	541	{
	542	return DeleteTemporaryImages(GetFlags(), m_imageLocations);
	543	}
	544
	545	/// Delete the in-memory or temporary files generated by the last operation
	546	bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
	547	{
	548	size_t i;
	549	for (i = 0; i < imageLocations.GetCount(); i++)
	550	{
	551	wxString location = imageLocations[i];
	552
	553	if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	554	{
	555	#if wxUSE_FILESYSTEM
	556	wxMemoryFSHandler::RemoveFile(location);
	557	#endif
	558	}
	559	else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	560	{
	561	if (wxFileExists(location))
	562	wxRemoveFile(location);
	563	}
	564	}
	565
	566	return true;
	567	}
	568
	569
	570	#endif
	571	// wxUSE_RICHTEXT
	572