220 lines
8.2 KiB
C
220 lines
8.2 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: htmlwinparser.h
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// Purpose: wxHtmlWinParser class (parser to be used with wxHtmlWindow)
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// Author: Vaclav Slavik
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// Copyright: (c) 1999 Vaclav Slavik
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// Licence: wxWindows Licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __HTMLWINPARSER_H__
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#define __HTMLWINPARSER_H__
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include "wx/defs.h"
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#if wxUSE_HTML
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#include <wx/module.h>
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#include <wx/html/htmlparser.h>
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#include <wx/html/htmlcell.h>
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class wxHtmlWinParser;
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class wxHtmlWinTagHandler;
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class wxHtmlTagsModule;
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//--------------------------------------------------------------------------------
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// wxHtmlWinParser
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// This class is derived from wxHtmlParser and its mail goal
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// is to parse HTML input so that it can be displayed in
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// wxHtmlWindow. It uses special wxHtmlWinTagHandler.
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//--------------------------------------------------------------------------------
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class WXDLLEXPORT wxHtmlWinParser : public wxHtmlParser
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{
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DECLARE_DYNAMIC_CLASS(wxHtmlWinParser)
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friend class wxHtmlWindow;
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private:
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wxWindow *m_Window;
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// window we're parsing for
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wxDC *m_DC;
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// Device Context we're parsing for
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static wxList m_Modules;
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// list of tags modules (see wxHtmlTagsModule for details)
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// This list is used to initialize m_Handlers member.
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wxHtmlContainerCell *m_Container;
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// actual container. See Open/CloseContainer for details.
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int m_FontBold, m_FontItalic, m_FontUnderlined, m_FontFixed; // this is not TRUE,FALSE but 1,0, we need it for indexing
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int m_FontSize; /* -2 to +4, 0 is default */
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wxColour m_LinkColor;
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wxColour m_ActualColor;
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// basic font parameters.
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wxString m_Link;
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// actual hypertext link or empty string
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bool m_UseLink;
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// TRUE if m_Link is not empty
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long m_CharHeight, m_CharWidth;
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// average height of normal-sized text
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int m_Align;
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// actual alignment
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wxFont *m_FontsTable[2][2][2][2][7];
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// table of loaded fonts. 1st four indexes are 0 or 1, depending on on/off
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// state of these flags (from left to right):
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// [bold][italic][underlined][fixed_size]
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// last index is font size : from 0 to 7 (remapped from html sizes -2 to +4)
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// Note : this table covers all possible combinations of fonts, but not
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// all of them are used, so many items in table are usually NULL.
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int m_FontsSizes[7];
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wxString m_FontFaceFixed, m_FontFaceNormal;
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int m_ItalicModeFixed, m_ItalicModeNormal;
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// html font sizes and faces of fixed and proportional fonts
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public:
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wxHtmlWinParser() : wxHtmlParser() {wxHtmlWinParser(NULL);}
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wxHtmlWinParser(wxWindow *wnd);
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virtual void InitParser(const wxString& source);
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virtual void DoneParser();
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virtual wxObject* GetProduct();
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virtual void SetDC(wxDC *dc) {m_DC = dc;}
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// Set's the DC used for parsing. If SetDC() is not called,
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// parsing won't proceed
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wxDC *GetDC() {return m_DC;}
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int GetCharHeight() const {return m_CharHeight;}
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int GetCharWidth() const {return m_CharWidth;}
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// NOTE : these functions do _not_ return _actual_
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// height/width. They return h/w of default font
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// for this DC. If you want actual values, call
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// GetDC() -> GetChar...()
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wxWindow *GetWindow() {return m_Window;}
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// returns associated wxWindow
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void SetFonts(wxString normal_face, int normal_italic_mode, wxString fixed_face, int fixed_italic_mode, int *sizes);
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// sets fonts to be used when displaying HTML page.
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// *_italic_mode can be either wxSLANT or wxITALIC
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virtual wxList* GetTempData();
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static void AddModule(wxHtmlTagsModule *module);
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// Adds tags module. see wxHtmlTagsModule for details.
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// parsing-related methods. These methods are called by tag handlers:
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wxHtmlContainerCell *GetContainer() const {return m_Container;}
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// Returns pointer to actual container. Common use in tag handler is :
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// m_WParser -> GetContainer() -> InsertCell(new ...);
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wxHtmlContainerCell *OpenContainer();
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// opens new container. This container is sub-container of opened
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// container. Sets GetContainer to newly created container
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// and returns it.
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wxHtmlContainerCell *SetContainer(wxHtmlContainerCell *c);
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// works like OpenContainer except that new container is not created
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// but c is used. You can use this to directly set actual container
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wxHtmlContainerCell *CloseContainer();
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// closes the container and sets actual Container to upper-level
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// container
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int GetFontSize() const {return m_FontSize;}
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void SetFontSize(int s) {m_FontSize = s;}
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int GetFontBold() const {return m_FontBold;}
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void SetFontBold(int x) {m_FontBold = x;}
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int GetFontItalic() const {return m_FontItalic;}
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void SetFontItalic(int x) {m_FontItalic = x;}
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int GetFontUnderlined() const {return m_FontUnderlined;}
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void SetFontUnderlined(int x) {m_FontUnderlined = x;}
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int GetFontFixed() const {return m_FontFixed;}
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void SetFontFixed(int x) {m_FontFixed = x;}
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int GetAlign() const {return m_Align;}
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void SetAlign(int a) {m_Align = a;}
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const wxColour& GetLinkColor() const {return m_LinkColor;}
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void SetLinkColor(const wxColour& clr) {m_LinkColor = clr;}
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const wxColour& GetActualColor() const {return m_ActualColor;}
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void SetActualColor(const wxColour& clr) {m_ActualColor = clr;}
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const wxString& GetLink() const {return m_Link;}
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void SetLink(const wxString& link) {m_Link = link; m_UseLink = link.Length() > 0;}
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virtual wxFont* CreateCurrentFont();
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// creates font depending on m_Font* members.
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// (note : it calls wxHtmlWindow's CreateCurrentFont...)
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protected:
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virtual void AddText(const char *txt);
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private:
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bool m_tmpLastWasSpace;
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// temporary variable used by AddText
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};
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//--------------------------------------------------------------------------------
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// wxHtmlWinTagHandler
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// This is basicly wxHtmlTagHandler except
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// it is extended with protected member m_Parser pointing to
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// the wxHtmlWinParser object
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//--------------------------------------------------------------------------------
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class WXDLLEXPORT wxHtmlWinTagHandler : public wxHtmlTagHandler
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{
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DECLARE_ABSTRACT_CLASS(wxHtmlWinTagHandler)
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protected:
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wxHtmlWinParser *m_WParser;
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// same as m_Parser, but overcasted
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public:
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wxHtmlWinTagHandler() : wxHtmlTagHandler() {};
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virtual void SetParser(wxHtmlParser *parser) {wxHtmlTagHandler::SetParser(parser); m_WParser = (wxHtmlWinParser*) parser;};
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};
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//--------------------------------------------------------------------------------
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// wxHtmlTagsModule
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// This is basic of dynamic tag handlers binding.
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// The class provides methods for filling parser's handlers
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// hash table.
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// (See documentation for details)
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//--------------------------------------------------------------------------------
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class WXDLLEXPORT wxHtmlTagsModule : public wxModule
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{
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DECLARE_DYNAMIC_CLASS(wxHtmlTagsModule)
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public:
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wxHtmlTagsModule() : wxModule() {};
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virtual bool OnInit();
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virtual void OnExit();
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virtual void FillHandlersTable(wxHtmlWinParser *parser) {}
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// This is called by wxHtmlWinParser.
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// The method must simply call parser->AddTagHandler(new <handler_class_name>);
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// for each handler
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};
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#endif // __HTMLWINPARSER_H__
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#endif
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