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;
    wxFileName::SplitPath(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);

                // wxHTML needs an extra <p> before a list when using <p> ... </p> in previous paragraphs.
                // TODO: pass a flag that indicates we're using wxHTML.
                str << wxT("<p>\n");

                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 if (!thisStyle.HasBulletStyle())
        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	wxFileName::SplitPath(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	// wxHTML needs an extra <p> before a list when using <p> ... </p> in previous paragraphs.
	243	// TODO: pass a flag that indicates we're using wxHTML.
	244	str << wxT("<p>\n");
	245
	246	str << tag;
	247	}
	248
	249	str << wxT("<li> ");
	250	}
	251	else
	252	{
	253	CloseLists(-1, str);
	254
	255	wxString align = GetAlignment(thisStyle);
	256	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	257
	258	// Use a table
	259	int indentTenthsMM = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
	260	// TODO: convert to pixels
	261	int indentPixels = indentTenthsMM/4;
	262	str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
	263
	264	OutputFont(thisStyle, str);
	265
	266	if (thisStyle.GetLeftSubIndent() < 0)
	267	{
	268	str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
	269	}
	270
	271	m_inTable = true;
	272	}
	273	}
	274	else
	275	{
	276	CloseLists(-1, str);
	277
	278	wxString align = GetAlignment(thisStyle);
	279	str << wxString::Format(wxT("<p align=\"%s\">"), align.c_str());
	280	}
	281	}
	282
	283	/// End paragraph formatting
	284	void wxRichTextHTMLHandler::EndParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& stream)
	285	{
	286	if (m_inTable)
	287	{
	288	if (thisStyle.HasFont())
	289	stream << wxT("</font>");
	290
	291	stream << wxT("</td></tr></table></p>\n");
	292	m_inTable = false;
	293	}
	294	else if (!thisStyle.HasBulletStyle())
	295	stream << wxT("</p>\n");
	296	}
	297
	298	/// Closes lists to level (-1 means close all)
	299	void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
	300	{
	301	// Close levels high than this
	302	int i = m_indents.GetCount()-1;
	303	while (i >= 0)
	304	{
	305	int l = m_indents[i];
	306	if (l > level)
	307	{
	308	if (m_listTypes[i] == 0)
	309	str << wxT("</ol>");
	310	else
	311	str << wxT("</ul>");
	312	m_indents.RemoveAt(i);
	313	m_listTypes.RemoveAt(i);
	314	}
	315	else
	316	break;
	317	i --;
	318	}
	319	}
	320
	321	/// Output font tag
	322	void wxRichTextHTMLHandler::OutputFont(const wxTextAttr& style, wxTextOutputStream& stream)
	323	{
	324	if (style.HasFont())
	325	{
	326	stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
	327	if (style.HasTextColour())
	328	stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
	329	stream << wxT(" >");
	330	}
	331	}
	332
	333	int wxRichTextHTMLHandler::TypeOfList( const wxTextAttr& thisStyle, wxString& tag )
	334	{
	335	// We can use number attribute of li tag but not all the browsers support it.
	336	// also wxHtmlWindow doesn't support type attribute.
	337
	338	bool m_is_ul = false;
	339	if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC\|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
	340	tag = wxT("<ol type=\"1\">");
	341	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
	342	tag = wxT("<ol type=\"A\">");
	343	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
	344	tag = wxT("<ol type=\"a\">");
	345	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
	346	tag = wxT("<ol type=\"I\">");
	347	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
	348	tag = wxT("<ol type=\"i\">");
	349	else
	350	{
	351	tag = wxT("<ul>");
	352	m_is_ul = true;
	353	}
	354
	355	if (m_is_ul)
	356	return 1;
	357	else
	358	return 0;
	359	}
	360
	361	wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttr& thisStyle )
	362	{
	363	switch( thisStyle.GetAlignment() )
	364	{
	365	case wxTEXT_ALIGNMENT_LEFT:
	366	return wxT("left");
	367	case wxTEXT_ALIGNMENT_RIGHT:
	368	return wxT("right");
	369	case wxTEXT_ALIGNMENT_CENTER:
	370	return wxT("center");
	371	case wxTEXT_ALIGNMENT_JUSTIFIED:
	372	return wxT("justify");
	373	default:
	374	return wxT("left");
	375	}
	376	}
	377
	378	void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
	379	{
	380	wxTextOutputStream str(stream);
	381
	382	str << wxT("<img src=\"");
	383
	384	#if wxUSE_FILESYSTEM
	385	if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	386	{
	387	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	388	image->LoadFromBlock();
	389	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	390	image->MakeBlock();
	391
	392	if (image->GetImage().Ok())
	393	{
	394	wxString ext(image->GetImageBlock().GetExtension());
	395	wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext));
	396	wxMemoryFSHandler::AddFile(tempFilename, image->GetImage(), image->GetImageBlock().GetImageType());
	397
	398	m_imageLocations.Add(tempFilename);
	399
	400	str << wxT("memory:") << tempFilename;
	401	}
	402	else
	403	str << wxT("memory:?");
	404
	405	sm_fileCounter ++;
	406	}
	407	else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	408	{
	409	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	410	image->LoadFromBlock();
	411	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	412	image->MakeBlock();
	413
	414	if (image->GetImage().Ok())
	415	{
	416	wxString tempDir(GetTempDir());
	417	if (tempDir.IsEmpty())
	418	tempDir = wxFileName::GetTempDir();
	419
	420	wxString ext(image->GetImageBlock().GetExtension());
	421	wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir, sm_fileCounter, ext));
	422	image->GetImageBlock().Write(tempFilename);
	423
	424	m_imageLocations.Add(tempFilename);
	425
	426	str << wxFileSystem::FileNameToURL(tempFilename);
	427	}
	428	else
	429	str << wxT("file:?");
	430
	431	sm_fileCounter ++;
	432	}
	433	else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
	434	#endif
	435	{
	436	str << wxT("data:");
	437	str << GetMimeType(image->GetImageBlock().GetImageType());
	438	str << wxT(";base64,");
	439
	440	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	441	image->MakeBlock();
	442
	443	wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
	444	str << data;
	445
	446	delete[] data;
	447	}
	448
	449	str << wxT("\" />");
	450	}
	451
	452	long wxRichTextHTMLHandler::PtToSize(long size)
	453	{
	454	int i;
	455	int len = m_fontSizeMapping.GetCount();
	456	for (i = 0; i < len; i++)
	457	if (size <= m_fontSizeMapping[i])
	458	return i+1;
	459	return 7;
	460	}
	461
	462	wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
	463	{
	464	wxString in;
	465	for(;indent > 0; indent -= 20)
	466	in.Append( wxT(" ") );
	467	return in;
	468	}
	469
	470	const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
	471	{
	472	switch(imageType)
	473	{
	474	case wxBITMAP_TYPE_BMP:
	475	return wxT("image/bmp");
	476	case wxBITMAP_TYPE_TIF:
	477	return wxT("image/tiff");
	478	case wxBITMAP_TYPE_GIF:
	479	return wxT("image/gif");
	480	case wxBITMAP_TYPE_PNG:
	481	return wxT("image/png");
	482	case wxBITMAP_TYPE_JPEG:
	483	return wxT("image/jpeg");
	484	default:
	485	return wxT("image/unknown");
	486	}
	487	}
	488
	489	// exim-style base64 encoder
	490	wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
	491	{
	492	// elements of enc64 array must be 8 bit values
	493	// otherwise encoder will fail
	494	// hmmm.. Does wxT macro define a char as 16 bit value
	495	// when compiling with UNICODE option?
	496	static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
	497	wxChar* output = new wxChar[4*((in_len+2)/3)+1];
	498	wxChar* p = output;
	499
	500	while( in_len-- > 0 )
	501	{
	502	register wxChar a, b;
	503
	504	a = *input++;
	505
	506	*p++ = enc64[ (a >> 2) & 0x3f ];
	507
	508	if( in_len-- == 0 )
	509	{
	510	*p++ = enc64[ (a << 4 ) & 0x30 ];
	511	*p++ = '=';
	512	*p++ = '=';
	513	break;
	514	}
	515
	516	b = *input++;
	517
	518	*p++ = enc64[(( a << 4 ) \| ((b >> 4) &0xf )) & 0x3f];
	519
	520	if( in_len-- == 0 )
	521	{
	522	*p++ = enc64[ (b << 2) & 0x3f ];
	523	*p++ = '=';
	524	break;
	525	}
	526
	527	a = *input++;
	528
	529	*p++ = enc64[ ((( b << 2 ) & 0x3f ) \| ((a >> 6)& 0x3)) & 0x3f ];
	530
	531	*p++ = enc64[ a & 0x3f ];
	532	}
	533	*p = 0;
	534
	535	return output;
	536	}
	537	#endif
	538	// wxUSE_STREAMS
	539
	540	/// Delete the in-memory or temporary files generated by the last operation
	541	bool wxRichTextHTMLHandler::DeleteTemporaryImages()
	542	{
	543	return DeleteTemporaryImages(GetFlags(), m_imageLocations);
	544	}
	545
	546	/// Delete the in-memory or temporary files generated by the last operation
	547	bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
	548	{
	549	size_t i;
	550	for (i = 0; i < imageLocations.GetCount(); i++)
	551	{
	552	wxString location = imageLocations[i];
	553
	554	if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	555	{
	556	#if wxUSE_FILESYSTEM
	557	wxMemoryFSHandler::RemoveFile(location);
	558	#endif
	559	}
	560	else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	561	{
	562	if (wxFileExists(location))
	563	wxRemoveFile(location);
	564	}
	565	}
	566
	567	return true;
	568	}
	569
	570
	571	#endif
	572	// wxUSE_RICHTEXT
	573