Added conversion to HTML, by Akin Demirtug
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37853 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
parent
b28a6678e0
commit
2dec67617f
@ -39,17 +39,65 @@ public:
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/// Can we handle this filename (if using files)? By default, checks the extension.
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virtual bool CanHandle(const wxString& filename) const;
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/// Output character formatting
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virtual void OutputCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start);
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/// Output paragraph formatting
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virtual void OutputParagraphFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start);
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protected:
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#if wxUSE_STREAMS
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virtual bool DoLoadFile(wxRichTextBuffer *buffer, wxInputStream& stream);
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virtual bool DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream);
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#endif
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/// Output character formatting
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virtual void BeginCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxOutputStream& stream );
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virtual void EndCharacterFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream );
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/// Output paragraph formatting
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virtual void OutputParagraphFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream/*, bool start*/);
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/// Converts an image to its base64 equivalent
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void Image_to_Base64(wxRichTextImage* image, wxOutputStream& stream);
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/// Builds required indentation
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void Indent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
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/// Left indent
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void LIndent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
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/// Converts from pt to size property compatible height
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long Pt_To_Size(long size);
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/// Typical base64 encoder
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wxChar* b64enc( unsigned char* input, size_t in_len );
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/// Gets the mime type of the given wxBITMAP_TYPE
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wxChar* GetMimeType(int imageType);
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/// Gets the html equivalent of the specified value
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wxString GetAlignment( const wxTextAttrEx& thisStyle );
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/// Generates array for indentations
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wxString SymbolicIndent(long indent);
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/// Finds the html equivalent of the specified bullet
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void TypeOfList( const wxTextAttrEx& thisStyle, wxString& tag );
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/// Closes existings or Opens new tables for navigation to an item's horizontal position.
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void NavigateToListPosition( const wxTextAttrEx& thisStyle, wxTextOutputStream& str );
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/// Indentation values of the table tags
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wxArrayInt m_indents;
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/// Horizontal position of the current table
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long m_indent;
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/// Is there any opened font tag
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bool m_font;
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/// Is there any opened ul/ol tag
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bool m_list;
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/// type of list, ul or ol?
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bool m_is_ul;
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};
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#endif
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@ -61,6 +61,37 @@ bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream&
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str << wxT("<html><head></head><body>\n");
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/*
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wxRichText may be support paper formats like a1/a2/a3/a4
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when this widget grown enough, i should turn back and support its new features
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but not yet
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str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td>");
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wxString left_indent = SymbolicIndent(currentParaStyle.GetLeftIndent());
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wxString right_indent = SymbolicIndent(currentParaStyle.GetRightIndent());
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str << wxString::Format(wxT("%s</td><td></td><td>%s</td></tr><tr>"),
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left_indent.c_str(), //Document-Wide Left Indent
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right_indent.c_str()); //Document-Wide Right Indent
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str << wxT("<td></td><td width=\"100%\">");
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*/
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str << wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"100%\">");
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str << wxString::Format(wxT("<font face=\"%s\" size=\"%i\" color=\"#%02X%02X%02X\" >"),
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currentParaStyle.GetFont().GetFaceName(), Pt_To_Size( currentParaStyle.GetFont().GetPointSize() ),
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currentParaStyle.GetTextColour().Red(), currentParaStyle.GetTextColour().Green(),
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currentParaStyle.GetTextColour().Blue());
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//wxString align = GetAlignment( currentParaStyle.GetAlignment() );
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//str << wxString::Format(wxT("<p align=\"%s\">"), align );
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m_font = false;
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m_indent = 0;
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m_list = false;
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wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
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while (node)
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{
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@ -69,7 +100,7 @@ bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream&
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if (para)
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{
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OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream, true);
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OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream);
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wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
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while (node2)
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@ -78,99 +109,480 @@ bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream&
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wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
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if (textObj && !textObj->IsEmpty())
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{
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OutputCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream, true);
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BeginCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream);
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str << textObj->GetText();
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OutputCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream, false);
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EndCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream);
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}
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wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
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if( image && !image->IsEmpty())
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Image_to_Base64( image, stream );
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node2 = node2->GetNext();
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}
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OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream, false);
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str << wxT("<P>\n");
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//OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream, false);
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}
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node = node->GetNext();
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}
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str << wxT("</body></html>\n");
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str << wxT("</font></td></tr></table></body></html>\n");
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return true;
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}
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/// Output character formatting
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void wxRichTextHTMLHandler::OutputCharacterFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start)
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void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxOutputStream& stream)
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{
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wxTextOutputStream str(stream);
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bool isBold = false;
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bool isItalic = false;
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bool isUnderline = false;
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wxString faceName;
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if (thisStyle.GetFont().Ok())
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//Is the item bulleted one?
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if( thisStyle.GetBulletStyle() != wxTEXT_ATTR_BULLET_STYLE_NONE )
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{
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if (thisStyle.GetFont().GetWeight() == wxBOLD)
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isBold = true;
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if (thisStyle.GetFont().GetStyle() == wxITALIC)
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isItalic = true;
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if (thisStyle.GetFont().GetUnderlined())
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isUnderline = true;
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//Is there any opened list?
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if( m_list )
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{
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//Yes there is
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faceName = thisStyle.GetFont().GetFaceName();
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//Is the item among the previous ones
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//Is the item one of the previous list tag's child items
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if( (thisStyle.GetLeftIndent() == (m_indent + 100)) || (thisStyle.GetLeftIndent() < 100) )
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str << wxT("<li>");//Yes it is
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else
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{
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//No it isn't
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//So we should close the list tag
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str << (m_is_ul ? wxT("</ul>") : wxT("</ol>"));
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//And renavigate to new list's horizontal position
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NavigateToListPosition(thisStyle, str);
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//Ok it's done
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//Get the appropriate tag, an ol for numerical values, an ul for dot, square etc.
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wxString tag;
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TypeOfList(thisStyle, tag);
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str << wxString::Format(wxT("%s<li>"), tag);
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}
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if (start)
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{
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if (isBold)
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str << wxT("<b>");
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if (isItalic)
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str << wxT("<i>");
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if (isUnderline)
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str << wxT("<u>");
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}
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else
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{
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if (isUnderline)
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//No there isn't a list
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//navigate to new list's horizontal position(indent)
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NavigateToListPosition(thisStyle, str);
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//Get the appropriate tag, an ol for numerical values, an ul for dot, square etc.
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wxString tag;
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TypeOfList(thisStyle, tag);
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str << wxString::Format(wxT("%s<li>"), tag);
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//Now we have a list, mark it.
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m_list = true;
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}
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}
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else if( m_list )
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{
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//The item is not bulleted and there is a list what should be closed now.
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//So close the list
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str << (m_is_ul ? wxT("</ul>") : wxT("</ol>"));
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//And mark as there is no an opened list
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m_list = false;
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}
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// does the item have an indentation ?
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if( thisStyle.GetLeftIndent() )
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{
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if( thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_NONE )
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{
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if( m_indent )
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{
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if( (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent()) == m_indent )
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{
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if( thisStyle.GetLeftSubIndent() < 0 )
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{
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wxString symbolic_indent = SymbolicIndent(~thisStyle.GetLeftSubIndent());
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str << wxString::Format(wxT("%s"), symbolic_indent);
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}
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}
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else
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{
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if( thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent() > m_indent )
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{
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Indent(thisStyle, str);
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m_indent = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
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m_indents.Add( m_indent );
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}
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else
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{
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int i = m_indents.size() - 1;
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for(; i > -1; i--)
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{
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if( m_indent < (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent()) )
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{
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Indent(thisStyle, str);
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m_indent = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
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m_indents.Add( m_indent );
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break;
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}
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else if( m_indent == (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent()) )
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{
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if( thisStyle.GetLeftSubIndent() < 0 )
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{
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wxString symbolic_indent = SymbolicIndent(~thisStyle.GetLeftSubIndent());
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str << wxString::Format(wxT("%s"), symbolic_indent);
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}
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break;
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}
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else
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{
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str << wxT("</td></tr></table>");
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m_indents.RemoveAt(i);
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if( i < 1 ){m_indent=0; break;}
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m_indent = m_indents[i-1];
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}
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}
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}
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}
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}
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else
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{
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Indent(thisStyle, str);
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m_indent = thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent();
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m_indents.Add( m_indent );
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}
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}
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}
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else if( m_indent )
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{
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//The item is not indented and there is a table(s) what should be closed now.
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//So close them
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for(unsigned int i = 0; i < m_indents.size(); i++ )
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str << wxT("</td></tr></table>");
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m_indent = 0;
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m_indents.Clear();
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}
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wxString style;
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//Is there any change on the font properties of the item
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if( thisStyle.GetFont().GetFaceName() != currentStyle.GetFont().GetFaceName() )
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style += wxString::Format(wxT(" face=\"%s\""), thisStyle.GetFont().GetFaceName());
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if( thisStyle.GetFont().GetPointSize() != currentStyle.GetFont().GetPointSize() )
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style += wxString::Format(wxT(" size=\"%i\""), Pt_To_Size(thisStyle.GetFont().GetPointSize()) );
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if( thisStyle.GetTextColour() != currentStyle.GetTextColour() )
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style += wxString::Format(wxT(" color=\"#%02X%02X%02X\""), thisStyle.GetTextColour().Red(),
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thisStyle.GetTextColour().Green(), thisStyle.GetTextColour().Blue());
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if( style.size() ){str << wxString::Format(wxT("<font %s >"), style); m_font = true;}
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if( thisStyle.GetFont().GetWeight() == wxBOLD )
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str << wxT("<b>");
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if( thisStyle.GetFont().GetStyle() == wxITALIC )
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str << wxT("<i>");
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if( thisStyle.GetFont().GetUnderlined() )
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str << wxT("<u>");
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}
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void wxRichTextHTMLHandler::EndCharacterFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream)
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{
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wxTextOutputStream str(stream);
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if( thisStyle.GetFont().GetUnderlined() )
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str << wxT("</u>");
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if (isItalic)
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if( thisStyle.GetFont().GetStyle() == wxITALIC )
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str << wxT("</i>");
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if (isBold)
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if( thisStyle.GetFont().GetWeight() == wxBOLD )
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str << wxT("</b>");
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if( m_font )
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{
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m_font = false;
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str << wxT("</font>");
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}
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}
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/// Output paragraph formatting
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void wxRichTextHTMLHandler::OutputParagraphFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start)
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void wxRichTextHTMLHandler::OutputParagraphFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream)
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{
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// TODO: lists, indentation (using tables), fonts, right-align, ...
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//If there is no opened list currently, insert a <p> after every paragraph
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if(!m_list)
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{
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wxTextOutputStream str(stream);
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bool isCentered = false;
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if (thisStyle.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
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{
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isCentered = true;
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}
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if (start)
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{
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if (isCentered)
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str << wxT("<center>");
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}
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else
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{
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if (isCentered)
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str << wxT("</center>");
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wxString align = GetAlignment( thisStyle );
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str << wxString::Format(wxT("<p align=\"%s\">"), align);
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}
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}
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void wxRichTextHTMLHandler::NavigateToListPosition(const wxTextAttrEx& thisStyle, wxTextOutputStream& str)
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{
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//indenting an item using an ul/ol tag is equal to inserting 5 x on its left side.
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//so we should start from 100 point left
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//Is the second td's left wall of the current indentaion table at the 100+ point-left-side
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//of the item, horizontally?
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if( m_indent + 100 < thisStyle.GetLeftIndent() )
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{
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//yes it is
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LIndent(thisStyle, str);
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m_indent = thisStyle.GetLeftIndent() - 100;
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m_indents.Add( m_indent );
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return;
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}
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//No it isn't
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int i = m_indents.size() - 1;
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for(; i > -1; i--)
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{
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//Is the second td's left wall of the current indentaion table at the 100+ point-left-side
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//of the item ?
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if( m_indent + 100 < thisStyle.GetLeftIndent() )
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{
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//Yes it is
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LIndent(thisStyle, str);
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m_indent = thisStyle.GetLeftIndent() - 100;
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m_indents.Add( m_indent );
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break;
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}
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else if( m_indent + 100 == thisStyle.GetLeftIndent() )
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break;//exact match
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else
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{
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//No it is not, the second td's left wall of the current indentaion table is at the
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//right side of the current item horizontally, so close it.
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str << wxT("</td></tr></table>");
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m_indents.RemoveAt(i);
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if( i < 1 ){m_indent=0; break;}
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m_indent = m_indents[i-1];
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}
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}
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}
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void wxRichTextHTMLHandler::Indent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str )
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{
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//As a five year experienced web developer i assure you there is no way to indent an item
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//in html way, but we can use tables.
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//Item -> "Hello world"
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//Its Left Indentation -> 100
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//Its Left Sub-Indentation ->40
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//A typical indentation-table for the item will be construct as the following
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//3 x nbsp = 60
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//2 x nbsp = 40
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//LSI = Left Sub Indent
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//LI = Left Indent - LSI
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//
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//-------------------------------------------
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//| nbsp;|nbsp;nbsp;Hello World |
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//| | | | |
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//| V | V |
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//| --LI-- | --LSI-- |
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//-------------------------------------------
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str << wxT("<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>");
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wxString symbolic_indent = SymbolicIndent( (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent()) - m_indent );
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str << wxString::Format( wxT("<td>%s</td>"), symbolic_indent );
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str << wxT("<td width=\"100%\">");
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if( thisStyle.GetLeftSubIndent() < 0 )
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{
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symbolic_indent = SymbolicIndent(~thisStyle.GetLeftSubIndent());
|
||||
str << wxString::Format(wxT("%s"), symbolic_indent);
|
||||
}
|
||||
}
|
||||
|
||||
void wxRichTextHTMLHandler::LIndent( const wxTextAttrEx& thisStyle, wxTextOutputStream& str )
|
||||
{
|
||||
//Code:
|
||||
//r.BeginNumberedBullet(1, 200, 60);
|
||||
//r.Newline();
|
||||
//r.WriteText(wxT("first item"));
|
||||
//r.EndNumberedBullet();
|
||||
//r.BeginNumberedBullet(2, 200, 60);
|
||||
//r.Newline();
|
||||
//r.WriteText(wxT("second item."));
|
||||
//r.EndNumberedBullet();
|
||||
//
|
||||
//A typical indentation-table for the item will be construct as the following
|
||||
|
||||
//1 x nbsp = 20 point
|
||||
//ULI -> 100pt (UL/OL tag indents its sub element by 100 point)
|
||||
//<--------- 100 pt ---------->|
|
||||
//------------------------------------------------------
|
||||
//| nbsp; nbsp;|<ul> |
|
||||
//| |<-ULI-><li>first item |
|
||||
//| |<-ULI-><li>second item |
|
||||
//| |</ul> |
|
||||
//------------------------------------------------------
|
||||
// |<-100->|
|
||||
|
||||
|
||||
str << wxT("<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>");
|
||||
|
||||
wxString symbolic_indent = SymbolicIndent( (thisStyle.GetLeftIndent() - m_indent) - 100);
|
||||
str << wxString::Format( wxT("<td>%s</td>"), symbolic_indent );
|
||||
str << wxT("<td width=\"100%\">");
|
||||
}
|
||||
|
||||
void wxRichTextHTMLHandler::TypeOfList( const wxTextAttrEx& 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.
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
wxString wxRichTextHTMLHandler::GetAlignment( const wxTextAttrEx& 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::Image_to_Base64(wxRichTextImage* image, wxOutputStream& stream)
|
||||
{
|
||||
wxTextOutputStream str(stream);
|
||||
|
||||
str << wxT("<img src=\"");
|
||||
str << wxT("data:");
|
||||
str << GetMimeType(image->GetImageBlock().GetImageType());
|
||||
str << wxT(";base64,");
|
||||
|
||||
wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
|
||||
str << data;
|
||||
|
||||
delete[] data;
|
||||
|
||||
str << wxT("\" />");
|
||||
}
|
||||
|
||||
long wxRichTextHTMLHandler::Pt_To_Size(long size)
|
||||
{
|
||||
//return most approximate size
|
||||
if(size < 9 ) return 1;
|
||||
else if( size < 11 ) return 2;
|
||||
else if( size < 14 ) return 3;
|
||||
else if( size < 18 ) return 4;
|
||||
else if( size < 23 ) return 5;
|
||||
else if( size < 30 ) return 6;
|
||||
else return 7;
|
||||
}
|
||||
|
||||
wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
|
||||
{
|
||||
wxString in;
|
||||
for(;indent > 0; indent -= 20)
|
||||
in.Append( wxT(" ") );
|
||||
return in;
|
||||
}
|
||||
|
||||
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?
|
||||
const static 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
|
||||
// wxUSE_STREAMS
|
||||
|
||||
#endif
|
||||
// wxUSE_RICHTEXT
|
||||
// wxUSE_RICHTEXT
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user