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();

#if wxUSE_UNICODE
    wxCSConv* customEncoding = NULL;
    wxMBConv* conv = NULL;
    if (!GetEncoding().IsEmpty())
    {
        customEncoding = new wxCSConv(GetEncoding());
        if (!customEncoding->IsOk())
        {
            delete customEncoding;
            customEncoding = NULL;
        }
    }
    if (customEncoding)
        conv = customEncoding;
    else
        conv = & wxConvUTF8;
#endif

    {
#if wxUSE_UNICODE
        wxTextOutputStream str(stream, wxEOL_NATIVE, *conv);
#else
        wxTextOutputStream str(stream, wxEOL_NATIVE);
#endif

        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");
    }

#if wxUSE_UNICODE
    if (customEncoding)
        delete customEncoding;
#endif

    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());

            wxString styleStr;

            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
            {
                float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;

                styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
            }
            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
            {
                float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;

                styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
            }

            float indentLeftMM = (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent())/10.0;
            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (indentLeftMM > 0.0))
            {
                styleStr += wxString::Format(wxT("margin-left: %.2fmm; "), indentLeftMM);
            }
            float indentRightMM = thisStyle.GetRightIndent()/10.0;
            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasRightIndent() && (indentRightMM > 0.0))
            {
                styleStr += wxString::Format(wxT("margin-right: %.2fmm; "), indentRightMM);
            }
            // First line indentation
            float firstLineIndentMM = - thisStyle.GetLeftSubIndent() / 10.0;
            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (firstLineIndentMM > 0.0))
            {
                styleStr += wxString::Format(wxT("text-indent: %.2fmm; "), firstLineIndentMM);
            }

            if (!styleStr.IsEmpty())
                str << wxT(" style=\"") << styleStr << wxT("\"");

            str << wxT(">");

            // TODO: convert to pixels
            int indentPixels = static_cast<int>(indentLeftMM*10/4);

            if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0)
            {
                // Use a table to do indenting if we don't have CSS
                str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
                m_inTable = true;
            }

            if (((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0) && (thisStyle.GetLeftSubIndent() < 0))
            {
                str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
            }
        }
    }
    else
    {
        CloseLists(-1, str);

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

        wxString styleStr;

        if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
        {
            float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;

            styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
        }
        if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
        {
            float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;

            styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
        }

        if (!styleStr.IsEmpty())
            str << wxT(" style=\"") << styleStr << wxT("\"");

        str << wxT(">");
    }
    OutputFont(thisStyle, str);
}

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

    if (m_inTable)
    {
        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	#if wxUSE_UNICODE
	81	wxCSConv* customEncoding = NULL;
	82	wxMBConv* conv = NULL;
	83	if (!GetEncoding().IsEmpty())
	84	{
	85	customEncoding = new wxCSConv(GetEncoding());
	86	if (!customEncoding->IsOk())
	87	{
	88	delete customEncoding;
	89	customEncoding = NULL;
	90	}
	91	}
	92	if (customEncoding)
	93	conv = customEncoding;
	94	else
	95	conv = & wxConvUTF8;
	96	#endif
	97
	98	{
	99	#if wxUSE_UNICODE
	100	wxTextOutputStream str(stream, wxEOL_NATIVE, *conv);
	101	#else
	102	wxTextOutputStream str(stream, wxEOL_NATIVE);
	103	#endif
	104
	105	wxTextAttr currentParaStyle = buffer->GetAttributes();
	106	wxTextAttr currentCharStyle = buffer->GetAttributes();
	107
	108	if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
	109	str << wxT("<html><head></head><body>\n");
	110
	111	OutputFont(currentParaStyle, str);
	112
	113	m_font = false;
	114	m_inTable = false;
	115
	116	m_indents.Clear();
	117	m_listTypes.Clear();
	118
	119	wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
	120	while (node)
	121	{
	122	wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
	123	wxASSERT (para != NULL);
	124
	125	if (para)
	126	{
	127	wxTextAttr paraStyle(para->GetCombinedAttributes());
	128
	129	BeginParagraphFormatting(currentParaStyle, paraStyle, str);
	130
	131	wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
	132	while (node2)
	133	{
	134	wxRichTextObject* obj = node2->GetData();
	135	wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
	136	if (textObj && !textObj->IsEmpty())
	137	{
	138	wxTextAttr charStyle(para->GetCombinedAttributes(obj->GetAttributes()));
	139	BeginCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	140
	141	wxString text = textObj->GetText();
	142
	143	if (charStyle.HasTextEffects() && (charStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_CAPITALS))
	144	text.MakeUpper();
	145
	146	wxString toReplace = wxRichTextLineBreakChar;
	147	text.Replace(toReplace, wxT("<br>"));
	148
	149	str << text;
	150
	151	EndCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
	152	}
	153
	154	wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
	155	if( image && (!image->IsEmpty() \|\| image->GetImageBlock().GetData()))
	156	WriteImage( image, stream );
	157
	158	node2 = node2->GetNext();
	159	}
	160
	161	EndParagraphFormatting(currentParaStyle, paraStyle, str);
	162
	163	str << wxT("\n");
	164	}
	165	node = node->GetNext();
	166	}
	167
	168	CloseLists(-1, str);
	169
	170	str << wxT("</font>");
	171
	172	if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
	173	str << wxT("</body></html>");
	174
	175	str << wxT("\n");
	176	}
	177
	178	#if wxUSE_UNICODE
	179	if (customEncoding)
	180	delete customEncoding;
	181	#endif
	182
	183	m_buffer = NULL;
	184
	185	return true;
	186	}
	187
	188	void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxTextAttr& currentStyle, const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& str)
	189	{
	190	wxString style;
	191
	192	// Is there any change in the font properties of the item?
	193	if (thisStyle.GetFontFaceName() != currentStyle.GetFontFaceName())
	194	{
	195	wxString faceName(thisStyle.GetFontFaceName());
	196	style += wxString::Format(wxT(" face=\"%s\""), faceName.c_str());
	197	}
	198	if (thisStyle.GetFontSize() != currentStyle.GetFontSize())
	199	style += wxString::Format(wxT(" size=\"%ld\""), PtToSize(thisStyle.GetFontSize()));
	200	if (thisStyle.GetTextColour() != currentStyle.GetTextColour() )
	201	{
	202	wxString color(thisStyle.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX));
	203	style += wxString::Format(wxT(" color=\"%s\""), color.c_str());
	204	}
	205
	206	if (style.size())
	207	{
	208	str << wxString::Format(wxT("<font %s >"), style.c_str());
	209	m_font = true;
	210	}
	211
	212	if (thisStyle.GetFontWeight() == wxBOLD)
	213	str << wxT("<b>");
	214	if (thisStyle.GetFontStyle() == wxITALIC)
	215	str << wxT("<i>");
	216	if (thisStyle.GetFontUnderlined())
	217	str << wxT("<u>");
	218
	219	if (thisStyle.HasURL())
	220	str << wxT("<a href=\"") << thisStyle.GetURL() << wxT("\">");
	221	}
	222
	223	void wxRichTextHTMLHandler::EndCharacterFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, const wxTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& stream)
	224	{
	225	if (thisStyle.HasURL())
	226	stream << wxT("</a>");
	227
	228	if (thisStyle.GetFontUnderlined())
	229	stream << wxT("</u>");
	230	if (thisStyle.GetFontStyle() == wxITALIC)
	231	stream << wxT("</i>");
	232	if (thisStyle.GetFontWeight() == wxBOLD)
	233	stream << wxT("</b>");
	234
	235	if (m_font)
	236	{
	237	m_font = false;
	238	stream << wxT("</font>");
	239	}
	240	}
	241
	242	/// Begin paragraph formatting
	243	void wxRichTextHTMLHandler::BeginParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& str)
	244	{
	245	if (thisStyle.HasPageBreak())
	246	{
	247	str << wxT("<div style=\"page-break-after:always\"></div>\n");
	248	}
	249
	250	if (thisStyle.HasLeftIndent() && thisStyle.GetLeftIndent() != 0)
	251	{
	252	if (thisStyle.HasBulletStyle())
	253	{
	254	int indent = thisStyle.GetLeftIndent();
	255
	256	// Close levels high than this
	257	CloseLists(indent, str);
	258
	259	if (m_indents.GetCount() > 0 && indent == m_indents.Last())
	260	{
	261	// Same level, no need to start a new list
	262	}
	263	else if (m_indents.GetCount() == 0 \|\| indent > m_indents.Last())
	264	{
	265	m_indents.Add(indent);
	266
	267	wxString tag;
	268	int listType = TypeOfList(thisStyle, tag);
	269	m_listTypes.Add(listType);
	270
	271	// wxHTML needs an extra <p> before a list when using <p> ... </p> in previous paragraphs.
	272	// TODO: pass a flag that indicates we're using wxHTML.
	273	str << wxT("<p>\n");
	274
	275	str << tag;
	276	}
	277
	278	str << wxT("<li> ");
	279	}
	280	else
	281	{
	282	CloseLists(-1, str);
	283
	284	wxString align = GetAlignment(thisStyle);
	285	str << wxString::Format(wxT("<p align=\"%s\""), align.c_str());
	286
	287	wxString styleStr;
	288
	289	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
	290	{
	291	float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;
	292
	293	styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
	294	}
	295	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
	296	{
	297	float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;
	298
	299	styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
	300	}
	301
	302	float indentLeftMM = (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent())/10.0;
	303	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (indentLeftMM > 0.0))
	304	{
	305	styleStr += wxString::Format(wxT("margin-left: %.2fmm; "), indentLeftMM);
	306	}
	307	float indentRightMM = thisStyle.GetRightIndent()/10.0;
	308	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasRightIndent() && (indentRightMM > 0.0))
	309	{
	310	styleStr += wxString::Format(wxT("margin-right: %.2fmm; "), indentRightMM);
	311	}
	312	// First line indentation
	313	float firstLineIndentMM = - thisStyle.GetLeftSubIndent() / 10.0;
	314	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (firstLineIndentMM > 0.0))
	315	{
	316	styleStr += wxString::Format(wxT("text-indent: %.2fmm; "), firstLineIndentMM);
	317	}
	318
	319	if (!styleStr.IsEmpty())
	320	str << wxT(" style=\"") << styleStr << wxT("\"");
	321
	322	str << wxT(">");
	323
	324	// TODO: convert to pixels
	325	int indentPixels = static_cast<int>(indentLeftMM*10/4);
	326
	327	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0)
	328	{
	329	// Use a table to do indenting if we don't have CSS
	330	str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
	331	m_inTable = true;
	332	}
	333
	334	if (((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0) && (thisStyle.GetLeftSubIndent() < 0))
	335	{
	336	str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
	337	}
	338	}
	339	}
	340	else
	341	{
	342	CloseLists(-1, str);
	343
	344	wxString align = GetAlignment(thisStyle);
	345	str << wxString::Format(wxT("<p align=\"%s\""), align.c_str());
	346
	347	wxString styleStr;
	348
	349	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
	350	{
	351	float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;
	352
	353	styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
	354	}
	355	if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
	356	{
	357	float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;
	358
	359	styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
	360	}
	361
	362	if (!styleStr.IsEmpty())
	363	str << wxT(" style=\"") << styleStr << wxT("\"");
	364
	365	str << wxT(">");
	366	}
	367	OutputFont(thisStyle, str);
	368	}
	369
	370	/// End paragraph formatting
	371	void wxRichTextHTMLHandler::EndParagraphFormatting(const wxTextAttr& WXUNUSED(currentStyle), const wxTextAttr& thisStyle, wxTextOutputStream& stream)
	372	{
	373	if (thisStyle.HasFont())
	374	stream << wxT("</font>");
	375
	376	if (m_inTable)
	377	{
	378	stream << wxT("</td></tr></table></p>\n");
	379	m_inTable = false;
	380	}
	381	else if (!thisStyle.HasBulletStyle())
	382	stream << wxT("</p>\n");
	383	}
	384
	385	/// Closes lists to level (-1 means close all)
	386	void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
	387	{
	388	// Close levels high than this
	389	int i = m_indents.GetCount()-1;
	390	while (i >= 0)
	391	{
	392	int l = m_indents[i];
	393	if (l > level)
	394	{
	395	if (m_listTypes[i] == 0)
	396	str << wxT("</ol>");
	397	else
	398	str << wxT("</ul>");
	399	m_indents.RemoveAt(i);
	400	m_listTypes.RemoveAt(i);
	401	}
	402	else
	403	break;
	404	i --;
	405	}
	406	}
	407
	408	/// Output font tag
	409	void wxRichTextHTMLHandler::OutputFont(const wxTextAttr& style, wxTextOutputStream& stream)
	410	{
	411	if (style.HasFont())
	412	{
	413	stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
	414	if (style.HasTextColour())
	415	stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
	416	stream << wxT(" >");
	417	}
	418	}
	419
	420	int wxRichTextHTMLHandler::TypeOfList( const wxTextAttr& thisStyle, wxString& tag )
	421	{
	422	// We can use number attribute of li tag but not all the browsers support it.
	423	// also wxHtmlWindow doesn't support type attribute.
	424
	425	bool m_is_ul = false;
	426	if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC\|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
	427	tag = wxT("<ol type=\"1\">");
	428	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
	429	tag = wxT("<ol type=\"A\">");
	430	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
	431	tag = wxT("<ol type=\"a\">");
	432	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
	433	tag = wxT("<ol type=\"I\">");
	434	else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
	435	tag = wxT("<ol type=\"i\">");
	436	else
	437	{
	438	tag = wxT("<ul>");
	439	m_is_ul = true;
	440	}
	441
	442	if (m_is_ul)
	443	return 1;
	444	else
	445	return 0;
	446	}
	447
	448	wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttr& thisStyle )
	449	{
	450	switch( thisStyle.GetAlignment() )
	451	{
	452	case wxTEXT_ALIGNMENT_LEFT:
	453	return wxT("left");
	454	case wxTEXT_ALIGNMENT_RIGHT:
	455	return wxT("right");
	456	case wxTEXT_ALIGNMENT_CENTER:
	457	return wxT("center");
	458	case wxTEXT_ALIGNMENT_JUSTIFIED:
	459	return wxT("justify");
	460	default:
	461	return wxT("left");
	462	}
	463	}
	464
	465	void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
	466	{
	467	wxTextOutputStream str(stream);
	468
	469	str << wxT("<img src=\"");
	470
	471	#if wxUSE_FILESYSTEM
	472	if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	473	{
	474	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	475	image->LoadFromBlock();
	476	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	477	image->MakeBlock();
	478
	479	if (image->GetImage().Ok())
	480	{
	481	wxString ext(image->GetImageBlock().GetExtension());
	482	wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext));
	483	wxMemoryFSHandler::AddFile(tempFilename, image->GetImage(), image->GetImageBlock().GetImageType());
	484
	485	m_imageLocations.Add(tempFilename);
	486
	487	str << wxT("memory:") << tempFilename;
	488	}
	489	else
	490	str << wxT("memory:?");
	491
	492	sm_fileCounter ++;
	493	}
	494	else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	495	{
	496	if (!image->GetImage().Ok() && image->GetImageBlock().GetData())
	497	image->LoadFromBlock();
	498	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	499	image->MakeBlock();
	500
	501	if (image->GetImage().Ok())
	502	{
	503	wxString tempDir(GetTempDir());
	504	if (tempDir.IsEmpty())
	505	tempDir = wxFileName::GetTempDir();
	506
	507	wxString ext(image->GetImageBlock().GetExtension());
	508	wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir, sm_fileCounter, ext));
	509	image->GetImageBlock().Write(tempFilename);
	510
	511	m_imageLocations.Add(tempFilename);
	512
	513	str << wxFileSystem::FileNameToURL(tempFilename);
	514	}
	515	else
	516	str << wxT("file:?");
	517
	518	sm_fileCounter ++;
	519	}
	520	else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
	521	#endif
	522	{
	523	str << wxT("data:");
	524	str << GetMimeType(image->GetImageBlock().GetImageType());
	525	str << wxT(";base64,");
	526
	527	if (image->GetImage().Ok() && !image->GetImageBlock().GetData())
	528	image->MakeBlock();
	529
	530	wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
	531	str << data;
	532
	533	delete[] data;
	534	}
	535
	536	str << wxT("\" />");
	537	}
	538
	539	long wxRichTextHTMLHandler::PtToSize(long size)
	540	{
	541	int i;
	542	int len = m_fontSizeMapping.GetCount();
	543	for (i = 0; i < len; i++)
	544	if (size <= m_fontSizeMapping[i])
	545	return i+1;
	546	return 7;
	547	}
	548
	549	wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
	550	{
	551	wxString in;
	552	for(;indent > 0; indent -= 20)
	553	in.Append( wxT(" ") );
	554	return in;
	555	}
	556
	557	const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
	558	{
	559	switch(imageType)
	560	{
	561	case wxBITMAP_TYPE_BMP:
	562	return wxT("image/bmp");
	563	case wxBITMAP_TYPE_TIF:
	564	return wxT("image/tiff");
	565	case wxBITMAP_TYPE_GIF:
	566	return wxT("image/gif");
	567	case wxBITMAP_TYPE_PNG:
	568	return wxT("image/png");
	569	case wxBITMAP_TYPE_JPEG:
	570	return wxT("image/jpeg");
	571	default:
	572	return wxT("image/unknown");
	573	}
	574	}
	575
	576	// exim-style base64 encoder
	577	wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
	578	{
	579	// elements of enc64 array must be 8 bit values
	580	// otherwise encoder will fail
	581	// hmmm.. Does wxT macro define a char as 16 bit value
	582	// when compiling with UNICODE option?
	583	static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
	584	wxChar* output = new wxChar[4*((in_len+2)/3)+1];
	585	wxChar* p = output;
	586
	587	while( in_len-- > 0 )
	588	{
	589	register wxChar a, b;
	590
	591	a = *input++;
	592
	593	*p++ = enc64[ (a >> 2) & 0x3f ];
	594
	595	if( in_len-- == 0 )
	596	{
	597	*p++ = enc64[ (a << 4 ) & 0x30 ];
	598	*p++ = '=';
	599	*p++ = '=';
	600	break;
	601	}
	602
	603	b = *input++;
	604
	605	*p++ = enc64[(( a << 4 ) \| ((b >> 4) &0xf )) & 0x3f];
	606
	607	if( in_len-- == 0 )
	608	{
	609	*p++ = enc64[ (b << 2) & 0x3f ];
	610	*p++ = '=';
	611	break;
	612	}
	613
	614	a = *input++;
	615
	616	*p++ = enc64[ ((( b << 2 ) & 0x3f ) \| ((a >> 6)& 0x3)) & 0x3f ];
	617
	618	*p++ = enc64[ a & 0x3f ];
	619	}
	620	*p = 0;
	621
	622	return output;
	623	}
	624	#endif
	625	// wxUSE_STREAMS
	626
	627	/// Delete the in-memory or temporary files generated by the last operation
	628	bool wxRichTextHTMLHandler::DeleteTemporaryImages()
	629	{
	630	return DeleteTemporaryImages(GetFlags(), m_imageLocations);
	631	}
	632
	633	/// Delete the in-memory or temporary files generated by the last operation
	634	bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
	635	{
	636	size_t i;
	637	for (i = 0; i < imageLocations.GetCount(); i++)
	638	{
	639	wxString location = imageLocations[i];
	640
	641	if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
	642	{
	643	#if wxUSE_FILESYSTEM
	644	wxMemoryFSHandler::RemoveFile(location);
	645	#endif
	646	}
	647	else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
	648	{
	649	if (wxFileExists(location))
	650	wxRemoveFile(location);
	651	}
	652	}
	653
	654	return true;
	655	}
	656
	657
	658	#endif
	659	// wxUSE_RICHTEXT
	660