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