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");

    str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"100%\">");

    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())
                    WriteImage( image, stream );

                node2 = node2->GetNext();
            }

            EndParagraphFormatting(currentParaStyle, paraStyle, str);

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

    CloseLists(-1, str);

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

    str << wxT("</td></tr></table><p>");

    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("</tr></td></table>");
        str << wxT("<div style=\"page-break-after:always\"></div>\n");
        str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"100%\">");
    }

    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>\n");
        m_inTable = false;
    }
}

/// 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	str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"100%\">");
	89
	90	OutputFont(currentParaStyle, str);
	91
	92	m_font = false;
	93	m_inTable = false;
	94
	95	m_indents.Clear();
	96	m_listTypes.Clear();
	97
	98	wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
	99	while (node)
	100	{
	101	wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
	102	wxASSERT (para != NULL);
	103
	104	if (para)
	105	{
	106	wxTextAttr paraStyle(para->GetCombinedAttributes());
	107
	108	BeginParagraphFormatting(currentParaStyle, paraStyle, str);
	109
	110	wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
	111	while (node2)
	112	{
	113	wxRichTextObject* obj = node2->GetData();
	114	wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
	115	if (textObj && !textObj->IsEmpty())
	116	{
	117	wxTextAttr charStyle(para->GetCombinedAttributes(obj->GetAttributes()));
	118	BeginCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	119
	120	wxString text = textObj->GetText();
	121
	122	if (charStyle.HasTextEffects() && (charStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_CAPITALS))
	123	text.MakeUpper();
	124
	125	wxString toReplace = wxRichTextLineBreakChar;
	126	text.Replace(toReplace, wxT("<br>"));
	127
	128	str << text;
	129
	130	EndCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	131	}
	132
	133	wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
	134	if( image && !image->IsEmpty())
	135	WriteImage( image, stream );
	136
	137	node2 = node2->GetNext();
	138	}
	139
	140	EndParagraphFormatting(currentParaStyle, paraStyle, str);
	141
	142	str << wxT("\n");
	143	}
	144	node = node->GetNext();
	145	}
	146
	147	CloseLists(-1, str);
	148
	149	str << wxT("</font>");
	150
	151	str << wxT("</td></tr></table><p>");
	152
	153	if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
	154	str << wxT("</body></html>");
	155
	156	str << wxT("\n");
	157
	158	m_buffer = NULL;
	159
	160	return true;
	161	}
	162
	163	void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxTextAttr& currentStyle, const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& str)
	164	{
	165	wxString style;
	166
	167	// Is there any change in the font properties of the item?
	168	if (thisStyle.GetFontFaceName() != currentStyle.GetFontFaceName())
	169	{
	170	wxString faceName(thisStyle.GetFontFaceName());
	171	style += wxString::Format(wxT(" face=\"%s\""), faceName.c_str());
	172	}
	173	if (thisStyle.GetFontSize() != currentStyle.GetFontSize())
	174	style += wxString::Format(wxT(" size=\"%ld\""), PtToSize(thisStyle.GetFontSize()));
	175	if (thisStyle.GetTextColour() != currentStyle.GetTextColour() )
	176	{
	177	wxString color(thisStyle.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX));
	178	style += wxString::Format(wxT(" color=\"%s\""), color.c_str());
	179	}
	180
	181	if (style.size())
	182	{
	183	str << wxString::Format(wxT("<font %s >"), style.c_str());
	184	m_font = true;
	185	}
	186
	187	if (thisStyle.GetFontWeight() == wxBOLD)
	188	str << wxT("<b>");
	189	if (thisStyle.GetFontStyle() == wxITALIC)
	190	str << wxT("<i>");
	191	if (thisStyle.GetFontUnderlined())
	192	str << wxT("<u>");
	193
	194	if (thisStyle.HasURL())
	195	str << wxT("<a href=\"") << thisStyle.GetURL() << wxT("\">");
	196	}
	197
	198	void wxRichTextHTMLHandler::EndCharacterFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& stream)
	199	{
	200	if (thisStyle.HasURL())
	201	stream << wxT("</a>");
	202
	203	if (thisStyle.GetFontUnderlined())
	204	stream << wxT("</u>");
	205	if (thisStyle.GetFontStyle() == wxITALIC)
	206	stream << wxT("</i>");
	207	if (thisStyle.GetFontWeight() == wxBOLD)
	208	stream << wxT("</b>");
	209
	210	if (m_font)
	211	{
	212	m_font = false;
	213	stream << wxT("</font>");
	214	}
	215	}
	216
	217	/// Begin paragraph formatting
	218	void wxRichTextHTMLHandler::BeginParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& str)
	219	{
	220	if (thisStyle.HasPageBreak())
	221	{
	222	str << wxT("</tr></td></table>");
	223	str << wxT("<div style=\"page-break-after:always\"></div>\n");
	224	str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"100%\">");
	225	}
	226
	227	if (thisStyle.HasLeftIndent() && thisStyle.GetLeftIndent() != 0)
	228	{
	229	if (thisStyle.HasBulletStyle())
	230	{
	231	int indent = thisStyle.GetLeftIndent();
	232
	233	// Close levels high than this
	234	CloseLists(indent, str);
	235
	236	if (m_indents.GetCount() > 0 && indent == m_indents.Last())
	237	{
	238	// Same level, no need to start a new list
	239	}
	240	else if (m_indents.GetCount() == 0 \|\| indent > m_indents.Last())
	241	{
	242	m_indents.Add(indent);
	243
	244	wxString tag;
	245	int listType = TypeOfList(thisStyle, tag);
	246	m_listTypes.Add(listType);
	247
	248	wxString align = GetAlignment(thisStyle);
	249	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	250
	251	str << tag;
	252	}
	253
	254	str << wxT("<li> ");
	255	}
	256	else
	257	{
	258	CloseLists(-1, str);
	259
	260	wxString align = GetAlignment(thisStyle);
	261	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	262
	263	// Use a table
	264	int indentTenthsMM = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
	265	// TODO: convert to pixels
	266	int indentPixels = indentTenthsMM/4;
	267	str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
	268
	269	OutputFont(thisStyle, str);
	270
	271	if (thisStyle.GetLeftSubIndent() < 0)
	272	{
	273	str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
	274	}
	275
	276	m_inTable = true;
	277	}
	278	}
	279	else
	280	{
	281	CloseLists(-1, str);
	282
	283	wxString align = GetAlignment(thisStyle);
	284	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	285	}
	286	}
	287
	288	/// End paragraph formatting
	289	void wxRichTextHTMLHandler::EndParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& stream)
	290	{
	291	if (m_inTable)
	292	{
	293	if (thisStyle.HasFont())
	294	stream << wxT("</font>");
	295
	296	stream << wxT("</td></tr></table>\n");
	297	m_inTable = false;
	298	}
	299	}
	300
	301	/// Closes lists to level (-1 means close all)
	302	void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
	303	{
	304	// Close levels high than this
	305	int i = m_indents.GetCount()-1;
	306	while (i >= 0)
	307	{
	308	int l = m_indents[i];
	309	if (l > level)
	310	{
	311	if (m_listTypes[i] == 0)
	312	str << wxT("</ol>");
	313	else
	314	str << wxT("</ul>");
	315	m_indents.RemoveAt(i);
	316	m_listTypes.RemoveAt(i);
	317	}
	318	else
	319	break;
	320	i --;
	321	}
	322	}
	323
	324	/// Output font tag
	325	void wxRichTextHTMLHandler::OutputFont(const wxTextAttr& style, wxTextOutputStream& stream)
	326	{
	327	if (style.HasFont())
	328	{
	329	stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
	330	if (style.HasTextColour())
	331	stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
	332	stream << wxT(" >");
	333	}
	334	}
	335
	336	int wxRichTextHTMLHandler::TypeOfList( const wxTextAttr& thisStyle, wxString& tag )
	337	{
	338	// We can use number attribute of li tag but not all the browsers support it.
	339	// also wxHtmlWindow doesn't support type attribute.
	340
	341	bool m_is_ul = false;
	342	if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC\|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
	343	tag = wxT("<ol type=\"1\">");
	344	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
	345	tag = wxT("<ol type=\"A\">");
	346	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
	347	tag = wxT("<ol type=\"a\">");
	348	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
	349	tag = wxT("<ol type=\"I\">");
	350	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
	351	tag = wxT("<ol type=\"i\">");
	352	else
	353	{
	354	tag = wxT("<ul>");
	355	m_is_ul = true;
	356	}
	357
	358	if (m_is_ul)
	359	return 1;
	360	else
	361	return 0;
	362	}
	363
	364	wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttr& thisStyle )
	365	{
	366	switch( thisStyle.GetAlignment() )
	367	{
	368	case wxTEXT_ALIGNMENT_LEFT:
	369	return wxT("left");
	370	case wxTEXT_ALIGNMENT_RIGHT:
	371	return wxT("right");
	372	case wxTEXT_ALIGNMENT_CENTER:
	373	return wxT("center");
	374	case wxTEXT_ALIGNMENT_JUSTIFIED:
	375	return wxT("justify");
	376	default:
	377	return wxT("left");
	378	}
	379	}
	380
	381	void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
	382	{
	383	wxTextOutputStream str(stream);
	384
	385	str << wxT("<img src=\"");
	386
	387	#if wxUSE_FILESYSTEM
	388	if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	389	{
	390	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	391	image->LoadFromBlock();
	392	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	393	image->MakeBlock();
	394
	395	if (image->GetImage().Ok())
	396	{
	397	wxString ext(image->GetImageBlock().GetExtension());
	398	wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext));
	399	wxMemoryFSHandler::AddFile(tempFilename, image->GetImage(), image->GetImageBlock().GetImageType());
	400
	401	m_imageLocations.Add(tempFilename);
	402
	403	str << wxT("memory:") << tempFilename;
	404	}
	405	else
	406	str << wxT("memory:?");
	407
	408	sm_fileCounter ++;
	409	}
	410	else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	411	{
	412	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	413	image->LoadFromBlock();
	414	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	415	image->MakeBlock();
	416
	417	if (image->GetImage().Ok())
	418	{
	419	wxString tempDir(GetTempDir());
	420	if (tempDir.IsEmpty())
	421	tempDir = wxFileName::GetTempDir();
	422
	423	wxString ext(image->GetImageBlock().GetExtension());
	424	wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir, sm_fileCounter, ext));
	425	image->GetImageBlock().Write(tempFilename);
	426
	427	m_imageLocations.Add(tempFilename);
	428
	429	str << wxFileSystem::FileNameToURL(tempFilename);
	430	}
	431	else
	432	str << wxT("file:?");
	433
	434	sm_fileCounter ++;
	435	}
	436	else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
	437	#endif
	438	{
	439	str << wxT("data:");
	440	str << GetMimeType(image->GetImageBlock().GetImageType());
	441	str << wxT(";base64,");
	442
	443	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	444	image->MakeBlock();
	445
	446	wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
	447	str << data;
	448
	449	delete[] data;
	450	}
	451
	452	str << wxT("\" />");
	453	}
	454
	455	long wxRichTextHTMLHandler::PtToSize(long size)
	456	{
	457	int i;
	458	int len = m_fontSizeMapping.GetCount();
	459	for (i = 0; i < len; i++)
	460	if (size <= m_fontSizeMapping[i])
	461	return i+1;
	462	return 7;
	463	}
	464
	465	wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
	466	{
	467	wxString in;
	468	for(;indent > 0; indent -= 20)
	469	in.Append( wxT(" ") );
	470	return in;
	471	}
	472
	473	const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
	474	{
	475	switch(imageType)
	476	{
	477	case wxBITMAP_TYPE_BMP:
	478	return wxT("image/bmp");
	479	case wxBITMAP_TYPE_TIF:
	480	return wxT("image/tiff");
	481	case wxBITMAP_TYPE_GIF:
	482	return wxT("image/gif");
	483	case wxBITMAP_TYPE_PNG:
	484	return wxT("image/png");
	485	case wxBITMAP_TYPE_JPEG:
	486	return wxT("image/jpeg");
	487	default:
	488	return wxT("image/unknown");
	489	}
	490	}
	491
	492	// exim-style base64 encoder
	493	wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
	494	{
	495	// elements of enc64 array must be 8 bit values
	496	// otherwise encoder will fail
	497	// hmmm.. Does wxT macro define a char as 16 bit value
	498	// when compiling with UNICODE option?
	499	static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
	500	wxChar* output = new wxChar[4*((in_len+2)/3)+1];
	501	wxChar* p = output;
	502
	503	while( in_len-- > 0 )
	504	{
	505	register wxChar a, b;
	506
	507	a = *input++;
	508
	509	*p++ = enc64[ (a >> 2) & 0x3f ];
	510
	511	if( in_len-- == 0 )
	512	{
	513	*p++ = enc64[ (a << 4 ) & 0x30 ];
	514	*p++ = '=';
	515	*p++ = '=';
	516	break;
	517	}
	518
	519	b = *input++;
	520
	521	*p++ = enc64[(( a << 4 ) \| ((b >> 4) &0xf )) & 0x3f];
	522
	523	if( in_len-- == 0 )
	524	{
	525	*p++ = enc64[ (b << 2) & 0x3f ];
	526	*p++ = '=';
	527	break;
	528	}
	529
	530	a = *input++;
	531
	532	*p++ = enc64[ ((( b << 2 ) & 0x3f ) \| ((a >> 6)& 0x3)) & 0x3f ];
	533
	534	*p++ = enc64[ a & 0x3f ];
	535	}
	536	*p = 0;
	537
	538	return output;
	539	}
	540	#endif
	541	// wxUSE_STREAMS
	542
	543	/// Delete the in-memory or temporary files generated by the last operation
	544	bool wxRichTextHTMLHandler::DeleteTemporaryImages()
	545	{
	546	return DeleteTemporaryImages(GetFlags(), m_imageLocations);
	547	}
	548
	549	/// Delete the in-memory or temporary files generated by the last operation
	550	bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
	551	{
	552	size_t i;
	553	for (i = 0; i < imageLocations.GetCount(); i++)
	554	{
	555	wxString location = imageLocations[i];
	556
	557	if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	558	{
	559	#if wxUSE_FILESYSTEM
	560	wxMemoryFSHandler::RemoveFile(location);
	561	#endif
	562	}
	563	else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	564	{
	565	if (wxFileExists(location))
	566	wxRemoveFile(location);
	567	}
	568	}
	569
	570	return true;
	571	}
	572
	573
	574	#endif
	575	// wxUSE_RICHTEXT
	576