221 lines
8.7 KiB
C
221 lines
8.7 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: htmlwin.h
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// Purpose: wxHtmlWindow class for parsing & displaying HTML
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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 __HTMLWIN_H__
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#define __HTMLWIN_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/window.h>
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#include <wx/config.h>
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#include <wx/treectrl.h>
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#include <wx/html/htmlwinparser.h>
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#include <wx/html/htmlcell.h>
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#include <wx/filesys.h>
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#include <wx/html/htmlfilter.h>
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//--------------------------------------------------------------------------------
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// wxHtmlWindow
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// (This is probably the only class you will directly use.)
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// Purpose of this class is to display HTML page (either local
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// file or downloaded via HTTP protocol) in a window. Width
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// of window is constant - given in constructor - virtual height
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// is changed dynamicly depending on page size.
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// Once the window is created you can set it's content by calling
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// SetPage(text) or LoadPage(filename).
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//--------------------------------------------------------------------------------
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// item of history list
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class WXDLLEXPORT HtmlHistoryItem : public wxObject
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{
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private:
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wxString m_Page;
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wxString m_Anchor;
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int m_Pos;
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public:
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HtmlHistoryItem(const wxString& p, const wxString& a) {m_Page = p, m_Anchor = a, m_Pos = 0;}
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int GetPos() const {return m_Pos;}
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void SetPos(int p) {m_Pos = p;}
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const wxString& GetPage() const {return m_Page;}
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const wxString& GetAnchor() const {return m_Anchor;}
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};
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#undef WXDLLEXPORTLOCAL
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#define WXDLLEXPORTLOCAL WXDLLEXPORT
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// ?? Don't know why - but Allen Van Sickel reported it to fix problems with DLL
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WX_DECLARE_OBJARRAY(HtmlHistoryItem, HtmlHistoryArray);
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#undef WXDLLEXPORTLOCAL
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#define WXDLLEXPORTLOCAL
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class WXDLLEXPORT wxHtmlWindow : public wxScrolledWindow
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{
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DECLARE_DYNAMIC_CLASS(wxHtmlWindow)
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protected:
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wxHtmlContainerCell *m_Cell;
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// This is pointer to the first cell in parsed data.
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// (Note: the first cell is usually top one = all other cells are sub-cells of this one)
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wxHtmlWinParser *m_Parser;
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// parser which is used to parse HTML input.
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// Each wxHtmlWindow has it's own parser because sharing one global
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// parser would be problematic (because of reentrancy)
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wxString m_OpenedPage;
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// contains name of actualy opened page or empty string if no page opened
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wxString m_OpenedAnchor;
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// contains name of current anchor within m_OpenedPage
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wxFileSystem* m_FS;
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// class for opening files (file system)
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wxFrame *m_RelatedFrame;
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wxString m_TitleFormat;
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int m_RelatedStatusBar;
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// frame in which page title should be displayed & number of it's statusbar
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// reserved for usage with this html window
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int m_Borders;
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// borders (free space between text and window borders)
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// defaults to 10 pixels.
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bool m_Scrollable;
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// TRUE if you can scroll the window.
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// If it is FALSE you can't scroll the window even if it's contents is larger
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// than window.
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private:
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bool m_tmpMouseMoved;
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// a flag indicated if mouse moved
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// (if TRUE we will try to change cursor in last call to OnIdle)
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bool m_tmpCanDraw;
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// if FALSE contents of the window is not redrawn
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// (in order to avoid ugly bliking)
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static wxList m_Filters;
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// list of HTML filters
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static wxHtmlFilterPlainText m_DefaultFilter;
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// this filter is used when no filter is able to read some file
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HtmlHistoryArray m_History;
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int m_HistoryPos;
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// browser history
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bool m_HistoryOn;
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// if this FLAG is false, items are not added to history
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public:
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wxHtmlWindow() : wxScrolledWindow() {};
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wxHtmlWindow(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
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const wxString& name = "htmlWindow", bool scrollable = TRUE);
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~wxHtmlWindow();
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bool SetPage(const wxString& source);
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// Set HTML page and display it. !! source is HTML document itself,
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// it is NOT address/filename of HTML document. If you want to
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// specify document location, use LoadPage() istead
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// Return value : FALSE if an error occured, TRUE otherwise
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bool LoadPage(const wxString& location);
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// Load HTML page from given location. Location can be either
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// a) /usr/wxGTK2/docs/html/wx.htm
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// b) http://www.somewhere.uk/document.htm
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// c) ftp://ftp.somesite.cz/pub/something.htm
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// In case there is no prefix (http:,ftp:), the method
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// will try to find it itself (1. local file, then http or ftp)
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// After the page is loaded, the method calls SetPage() to display it.
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// Note : you can also use path relative to previously loaded page
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// Return value : same as SetPage
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wxString GetOpenedPage() const {return m_OpenedPage;}
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// Returns full location of opened page
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void SetRelatedFrame(wxFrame* frame, const wxString& format);
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// sets frame in which page title will be displayed. Format is format of
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// frame title, e.g. "HtmlHelp : %s". It must contain exactly one %s
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wxFrame* GetRelatedFrame() const {return m_RelatedFrame;}
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void SetRelatedStatusBar(int bar);
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// after(!) calling SetRelatedFrame, this sets statusbar slot where messages
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// will be displayed. Default is -1 = no messages.
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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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void SetTitle(const wxString& title);
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// Sets the title of the window
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// (depending on the information passed to SetRelatedFrame() method)
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void SetBorders(int b) {m_Borders = b;}
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// Sets space between text and window borders.
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virtual void ReadCustomization(wxConfigBase *cfg, wxString path = wxEmptyString);
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// saves custom settings into cfg config. it will use the path 'path'
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// if given, otherwise it will save info into currently selected path.
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// saved values : things set by SetFonts, SetBorders.
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virtual void WriteCustomization(wxConfigBase *cfg, wxString path = wxEmptyString);
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// ...
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bool HistoryBack();
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bool HistoryForward();
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// Goes to previous/next page (in browsing history)
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// Returns TRUE if successful, FALSE otherwise
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void HistoryClear();
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// Resets history
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wxHtmlContainerCell* GetInternalRepresentation() const {return m_Cell;}
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// Returns pointer to conteiners/cells structure.
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// It should be used ONLY when printing
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static void AddFilter(wxHtmlFilter *filter);
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// Adds input filter
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virtual void OnLinkClicked(const wxString& link);
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// called when users clicked on hypertext link. Default behavior is to
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// call LoadPage(loc)
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protected:
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bool ScrollToAnchor(const wxString& anchor);
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// Scrolls to anchor of this name. (Anchor is #news
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// or #features etc. it is part of address sometimes:
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// http://www.ms.mff.cuni.cz/~vsla8348/wxhtml/index.html#news)
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// Return value : TRUE if anchor exists, FALSE otherwise
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void CreateLayout();
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// prepare layout (= fill m_PosX, m_PosY for fragments) based on actual size of
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// window. This method also setup scrollbars
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void OnDraw(wxDC& dc);
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void OnSize(wxSizeEvent& event);
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void OnMouseEvent(wxMouseEvent& event);
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void OnIdle(wxIdleEvent& event);
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void OnKeyDown(wxKeyEvent& event);
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DECLARE_EVENT_TABLE()
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};
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#endif // __HTMLWIN_H__
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#endif
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