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wxWidgets/include/wx/richtext/richtexthtml.h
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148
wxWidgets/include/wx/richtext/richtexthtml.h
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/richtext/richtexthtml.h
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// Purpose: HTML I/O for wxRichTextCtrl
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// Author: Julian Smart
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// Modified by:
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// Created: 2005-09-30
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// RCS-ID: $Id: richtexthtml.h 62033 2009-09-23 11:06:30Z JS $
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_RICHTEXTHTML_H_
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#define _WX_RICHTEXTHTML_H_
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/*!
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* Includes
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*/
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#include "wx/richtext/richtextbuffer.h"
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// Use CSS styles where applicable, otherwise use non-CSS workarounds
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#define wxRICHTEXT_HANDLER_USE_CSS 0x1000
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/*!
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* wxRichTextHTMLHandler
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*/
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class WXDLLIMPEXP_RICHTEXT wxRichTextHTMLHandler: public wxRichTextFileHandler
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{
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DECLARE_CLASS(wxRichTextHTMLHandler)
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public:
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wxRichTextHTMLHandler(const wxString& name = wxT("HTML"), const wxString& ext = wxT("html"), int type = wxRICHTEXT_TYPE_HTML);
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/// Can we save using this handler?
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virtual bool CanSave() const { return true; }
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/// Can we load using this handler?
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virtual bool CanLoad() const { return false; }
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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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// Accessors and operations unique to this handler
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/// Set and get the list of image locations generated by the last operation
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void SetTemporaryImageLocations(const wxArrayString& locations) { m_imageLocations = locations; }
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const wxArrayString& GetTemporaryImageLocations() const { return m_imageLocations; }
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/// Clear the image locations generated by the last operation
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void ClearTemporaryImageLocations() { m_imageLocations.Clear(); }
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/// Delete the in-memory or temporary files generated by the last operation
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bool DeleteTemporaryImages();
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/// Delete the in-memory or temporary files generated by the last operation. This is a static
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/// function that can be used to delete the saved locations from an earlier operation,
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/// for example after the user has viewed the HTML file.
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static bool DeleteTemporaryImages(int flags, const wxArrayString& imageLocations);
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/// Reset the file counter, in case, for example, the same names are required each time
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static void SetFileCounter(int counter) { sm_fileCounter = counter; }
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/// Set and get the directory for storing temporary files. If empty, the system
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/// temporary directory will be used.
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void SetTempDir(const wxString& tempDir) { m_tempDir = tempDir; }
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const wxString& GetTempDir() const { return m_tempDir; }
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/// Set and get mapping from point size to HTML font size. There should be 7 elements,
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/// one for each HTML font size, each element specifying the maximum point size for that
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/// HTML font size. E.g. 8, 10, 13, 17, 22, 29, 100
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void SetFontSizeMapping(const wxArrayInt& fontSizeMapping) { m_fontSizeMapping = fontSizeMapping; }
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wxArrayInt GetFontSizeMapping() const { return m_fontSizeMapping; }
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protected:
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// Implementation
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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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/// Output character formatting
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void BeginCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, const wxTextAttrEx& paraStyle, wxTextOutputStream& stream );
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void EndCharacterFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, const wxTextAttrEx& paraStyle, wxTextOutputStream& stream );
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/// Output paragraph formatting
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void BeginParagraphFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxTextOutputStream& stream);
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void EndParagraphFormatting(const wxTextAttrEx& currentStyle, const wxTextAttrEx& thisStyle, wxTextOutputStream& stream);
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/// Output font tag
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void OutputFont(const wxTextAttrEx& style, wxTextOutputStream& stream);
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/// Closes lists to level (-1 means close all)
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void CloseLists(int level, wxTextOutputStream& str);
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/// Writes an image to its base64 equivalent, or to the memory filesystem, or to a file
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void WriteImage(wxRichTextImage* image, wxOutputStream& stream);
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/// Converts from pt to size property compatible height
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long PtToSize(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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const 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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int TypeOfList(const wxTextAttrEx& thisStyle, wxString& tag);
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#endif
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// Data members
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wxRichTextBuffer* m_buffer;
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/// Indentation values of the table tags
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wxArrayInt m_indents;
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/// Stack of list types: 0 = ol, 1 = ul
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wxArrayInt m_listTypes;
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/// Is there any opened font tag?
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bool m_font;
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/// Are we in a table?
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bool m_inTable;
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/// A list of the image files or in-memory images created by the last operation.
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wxArrayString m_imageLocations;
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/// A location for the temporary files
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wxString m_tempDir;
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/// A mapping from point size to HTML font size
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wxArrayInt m_fontSizeMapping;
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/// A counter for generating filenames
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static int sm_fileCounter;
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};
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#endif
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// _WX_RICHTEXTXML_H_
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