///////////////////////////////////////////////////////////////////////////// // Name: winpars.h // Purpose: wxHtmlWinParser class (parser to be used with wxHtmlWindow) // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_WINPARS_H_ #define _WX_WINPARS_H_ #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "winpars.h" #endif #include "wx/defs.h" #if wxUSE_HTML #include "wx/module.h" #include "wx/font.h" #include "wx/html/htmlpars.h" #include "wx/html/htmlcell.h" #include "wx/encconv.h" class WXDLLIMPEXP_HTML wxHtmlWindow; class WXDLLIMPEXP_HTML wxHtmlWinParser; class WXDLLIMPEXP_HTML wxHtmlWinTagHandler; class WXDLLIMPEXP_HTML wxHtmlTagsModule; //-------------------------------------------------------------------------------- // wxHtmlWinParser // This class is derived from wxHtmlParser and its mail goal // is to parse HTML input so that it can be displayed in // wxHtmlWindow. It uses special wxHtmlWinTagHandler. //-------------------------------------------------------------------------------- class WXDLLIMPEXP_HTML wxHtmlWinParser : public wxHtmlParser { DECLARE_ABSTRACT_CLASS(wxHtmlWinParser) friend class wxHtmlWindow; public: wxHtmlWinParser(wxHtmlWindow *wnd = NULL); ~wxHtmlWinParser(); virtual void InitParser(const wxString& source); virtual void DoneParser(); virtual wxObject* GetProduct(); virtual wxFSFile *OpenURL(wxHtmlURLType type, const wxString& url) const; // Set's the DC used for parsing. If SetDC() is not called, // parsing won't proceed virtual void SetDC(wxDC *dc, double pixel_scale = 1.0) { m_DC = dc; m_PixelScale = pixel_scale; } wxDC *GetDC() {return m_DC;} double GetPixelScale() {return m_PixelScale;} int GetCharHeight() const {return m_CharHeight;} int GetCharWidth() const {return m_CharWidth;} // NOTE : these functions do _not_ return _actual_ // height/width. They return h/w of default font // for this DC. If you want actual values, call // GetDC()->GetChar...() // returns associated wxWindow wxHtmlWindow *GetWindow() {return m_Window;} // Sets fonts to be used when displaying HTML page. (if size null then default sizes used). void SetFonts(wxString normal_face, wxString fixed_face, const int *sizes = NULL); // Sets font sizes to be relative to the given size or the system // default size; use either specified or default font void SetStandardFonts(int size = -1, const wxString& normal_face = wxEmptyString, const wxString& fixed_face = wxEmptyString); // Adds tags module. see wxHtmlTagsModule for details. static void AddModule(wxHtmlTagsModule *module); static void RemoveModule(wxHtmlTagsModule *module); // parsing-related methods. These methods are called by tag handlers: // Returns pointer to actual container. Common use in tag handler is : // m_WParser->GetContainer()->InsertCell(new ...); wxHtmlContainerCell *GetContainer() const {return m_Container;} // opens new container. This container is sub-container of opened // container. Sets GetContainer to newly created container // and returns it. wxHtmlContainerCell *OpenContainer(); // works like OpenContainer except that new container is not created // but c is used. You can use this to directly set actual container wxHtmlContainerCell *SetContainer(wxHtmlContainerCell *c); // closes the container and sets actual Container to upper-level // container wxHtmlContainerCell *CloseContainer(); int GetFontSize() const {return m_FontSize;} void SetFontSize(int s); int GetFontBold() const {return m_FontBold;} void SetFontBold(int x) {m_FontBold = x;} int GetFontItalic() const {return m_FontItalic;} void SetFontItalic(int x) {m_FontItalic = x;} int GetFontUnderlined() const {return m_FontUnderlined;} void SetFontUnderlined(int x) {m_FontUnderlined = x;} int GetFontFixed() const {return m_FontFixed;} void SetFontFixed(int x) {m_FontFixed = x;} wxString GetFontFace() const {return GetFontFixed() ? m_FontFaceFixed : m_FontFaceNormal;} void SetFontFace(const wxString& face); int GetAlign() const {return m_Align;} void SetAlign(int a) {m_Align = a;} const wxColour& GetLinkColor() const { return m_LinkColor; } void SetLinkColor(const wxColour& clr) { m_LinkColor = clr; } const wxColour& GetActualColor() const { return m_ActualColor; } void SetActualColor(const wxColour& clr) { m_ActualColor = clr ;} const wxHtmlLinkInfo& GetLink() const { return m_Link; } void SetLink(const wxHtmlLinkInfo& link); #if !wxUSE_UNICODE void SetInputEncoding(wxFontEncoding enc); wxFontEncoding GetInputEncoding() const { return m_InputEnc; } wxFontEncoding GetOutputEncoding() const { return m_OutputEnc; } wxEncodingConverter *GetEncodingConverter() const { return m_EncConv; } #endif // creates font depending on m_Font* members. virtual wxFont* CreateCurrentFont(); protected: virtual void AddText(const wxChar* txt); private: bool m_tmpLastWasSpace; wxChar *m_tmpStrBuf; size_t m_tmpStrBufSize; // temporary variables used by AddText wxHtmlWindow *m_Window; // window we're parsing for double m_PixelScale; wxDC *m_DC; // Device Context we're parsing for static wxList m_Modules; // list of tags modules (see wxHtmlTagsModule for details) // This list is used to initialize m_Handlers member. wxHtmlContainerCell *m_Container; // current container. See Open/CloseContainer for details. int m_FontBold, m_FontItalic, m_FontUnderlined, m_FontFixed; // this is not true,false but 1,0, we need it for indexing int m_FontSize; /* -2 to +4, 0 is default */ wxColour m_LinkColor; wxColour m_ActualColor; // basic font parameters. wxHtmlLinkInfo m_Link; // actual hypertext link or empty string bool m_UseLink; // true if m_Link is not empty long m_CharHeight, m_CharWidth; // average height of normal-sized text int m_Align; // actual alignment wxFont* m_FontsTable[2][2][2][2][7]; wxString m_FontsFacesTable[2][2][2][2][7]; #if !wxUSE_UNICODE wxFontEncoding m_FontsEncTable[2][2][2][2][7]; #endif // table of loaded fonts. 1st four indexes are 0 or 1, depending on on/off // state of these flags (from left to right): // [bold][italic][underlined][fixed_size] // last index is font size : from 0 to 6 (remapped from html sizes 1 to 7) // Note : this table covers all possible combinations of fonts, but not // all of them are used, so many items in table are usually NULL. int m_FontsSizes[7]; wxString m_FontFaceFixed, m_FontFaceNormal; // html font sizes and faces of fixed and proportional fonts #if !wxUSE_UNICODE wxFontEncoding m_InputEnc, m_OutputEnc; // I/O font encodings wxEncodingConverter *m_EncConv; #endif wxHtmlWordCell *m_lastWordCell; DECLARE_NO_COPY_CLASS(wxHtmlWinParser) }; //----------------------------------------------------------------------------- // wxHtmlWinTagHandler // This is basicly wxHtmlTagHandler except // it is extended with protected member m_Parser pointing to // the wxHtmlWinParser object //----------------------------------------------------------------------------- class WXDLLIMPEXP_HTML wxHtmlWinTagHandler : public wxHtmlTagHandler { DECLARE_ABSTRACT_CLASS(wxHtmlWinTagHandler) public: wxHtmlWinTagHandler() : wxHtmlTagHandler() {} virtual void SetParser(wxHtmlParser *parser) {wxHtmlTagHandler::SetParser(parser); m_WParser = (wxHtmlWinParser*) parser;}; protected: wxHtmlWinParser *m_WParser; // same as m_Parser, but overcasted DECLARE_NO_COPY_CLASS(wxHtmlWinTagHandler) }; //---------------------------------------------------------------------------- // wxHtmlTagsModule // This is basic of dynamic tag handlers binding. // The class provides methods for filling parser's handlers // hash table. // (See documentation for details) //---------------------------------------------------------------------------- class WXDLLIMPEXP_HTML wxHtmlTagsModule : public wxModule { DECLARE_DYNAMIC_CLASS(wxHtmlTagsModule) public: wxHtmlTagsModule() : wxModule() {} virtual bool OnInit(); virtual void OnExit(); // This is called by wxHtmlWinParser. // The method must simply call parser->AddTagHandler(new // ); for each handler virtual void FillHandlersTable(wxHtmlWinParser * WXUNUSED(parser)) { } }; #endif #endif // _WX_WINPARS_H_