+// file or downloaded via HTTP protocol) in a window. Width of
+// window is constant - given in constructor - virtual height
+// is changed dynamically depending on page size. Once the
+// window is created you can set its content by calling
+// SetPage(text) or LoadPage(filename).
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_HTML wxHtmlWindow : public wxScrolledWindow,
+ public wxHtmlWindowInterface,
+ public wxHtmlWindowMouseHelper
+{
+ DECLARE_DYNAMIC_CLASS(wxHtmlWindow)
+ friend class wxHtmlWinModule;
+
+public:
+ wxHtmlWindow() : wxHtmlWindowMouseHelper(this) { Init(); }
+ wxHtmlWindow(wxWindow *parent, wxWindowID id = wxID_ANY,
+ const wxPoint& pos = wxDefaultPosition,
+ const wxSize& size = wxDefaultSize,
+ long style = wxHW_DEFAULT_STYLE,
+ const wxString& name = wxT("htmlWindow"))
+ : wxHtmlWindowMouseHelper(this)
+ {
+ Init();
+ Create(parent, id, pos, size, style, name);
+ }
+ virtual ~wxHtmlWindow();
+
+ bool Create(wxWindow *parent, wxWindowID id = wxID_ANY,
+ const wxPoint& pos = wxDefaultPosition,
+ const wxSize& size = wxDefaultSize,
+ long style = wxHW_SCROLLBAR_AUTO,
+ const wxString& name = wxT("htmlWindow"));
+
+ // Set HTML page and display it. !! source is HTML document itself,
+ // it is NOT address/filename of HTML document. If you want to
+ // specify document location, use LoadPage() istead
+ // Return value : false if an error occurred, true otherwise
+ virtual bool SetPage(const wxString& source);
+
+ // Append to current page
+ bool AppendToPage(const wxString& source);
+
+ // Load HTML page from given location. Location can be either
+ // a) /usr/wxGTK2/docs/html/wx.htm
+ // b) http://www.somewhere.uk/document.htm
+ // c) ftp://ftp.somesite.cz/pub/something.htm
+ // In case there is no prefix (http:,ftp:), the method
+ // will try to find it itself (1. local file, then http or ftp)
+ // After the page is loaded, the method calls SetPage() to display it.
+ // Note : you can also use path relative to previously loaded page
+ // Return value : same as SetPage
+ virtual bool LoadPage(const wxString& location);
+
+ // Loads HTML page from file
+ bool LoadFile(const wxFileName& filename);
+
+ // Returns full location of opened page
+ wxString GetOpenedPage() const {return m_OpenedPage;}
+ // Returns anchor within opened page
+ wxString GetOpenedAnchor() const {return m_OpenedAnchor;}
+ // Returns <TITLE> of opened page or empty string otherwise
+ wxString GetOpenedPageTitle() const {return m_OpenedPageTitle;}
+
+ // Sets frame in which page title will be displayed. Format is format of
+ // frame title, e.g. "HtmlHelp : %s". It must contain exactly one %s
+ void SetRelatedFrame(wxFrame* frame, const wxString& format);
+ wxFrame* GetRelatedFrame() const {return m_RelatedFrame;}
+
+#if wxUSE_STATUSBAR
+ // After(!) calling SetRelatedFrame, this sets statusbar slot where messages
+ // will be displayed. Default is -1 = no messages.
+ void SetRelatedStatusBar(int index);
+ void SetRelatedStatusBar(wxStatusBar*, int index = 0);
+#endif // wxUSE_STATUSBAR
+
+ // Sets fonts to be used when displaying HTML page.
+ void SetFonts(const wxString& normal_face, const 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);
+
+ // Sets space between text and window borders.
+ void SetBorders(int b) {m_Borders = b;}
+
+ // Sets the bitmap to use for background (currnetly it will be tiled,
+ // when/if we have CSS support we could add other possibilities...)
+ void SetBackgroundImage(const wxBitmap& bmpBg) { m_bmpBg = bmpBg; }
+
+#if wxUSE_CONFIG
+ // Saves custom settings into cfg config. it will use the path 'path'
+ // if given, otherwise it will save info into currently selected path.
+ // saved values : things set by SetFonts, SetBorders.
+ virtual void ReadCustomization(wxConfigBase *cfg, wxString path = wxEmptyString);
+ // ...
+ virtual void WriteCustomization(wxConfigBase *cfg, wxString path = wxEmptyString);
+#endif // wxUSE_CONFIG
+
+ // Goes to previous/next page (in browsing history)
+ // Returns true if successful, false otherwise
+ bool HistoryBack();
+ bool HistoryForward();
+ bool HistoryCanBack();
+ bool HistoryCanForward();
+ // Resets history
+ void HistoryClear();
+
+ // Returns pointer to conteiners/cells structure.
+ // It should be used ONLY when printing
+ wxHtmlContainerCell* GetInternalRepresentation() const {return m_Cell;}
+
+ // Adds input filter
+ static void AddFilter(wxHtmlFilter *filter);
+
+ // Returns a pointer to the parser.
+ wxHtmlWinParser *GetParser() const { return m_Parser; }
+
+ // Adds HTML processor to this instance of wxHtmlWindow:
+ void AddProcessor(wxHtmlProcessor *processor);
+ // Adds HTML processor to wxHtmlWindow class as whole:
+ static void AddGlobalProcessor(wxHtmlProcessor *processor);
+
+
+ // -- Callbacks --
+
+ // Sets the title of the window
+ // (depending on the information passed to SetRelatedFrame() method)
+ virtual void OnSetTitle(const wxString& title);
+
+ // Called when user clicked on hypertext link. Default behaviour is to
+ // call LoadPage(loc)
+ virtual void OnLinkClicked(const wxHtmlLinkInfo& link);
+
+ // Called when wxHtmlWindow wants to fetch data from an URL (e.g. when
+ // loading a page or loading an image). The data are downloaded if and only if
+ // OnOpeningURL returns true. If OnOpeningURL returns wxHTML_REDIRECT,
+ // it must set *redirect to the new URL
+ virtual wxHtmlOpeningStatus OnOpeningURL(wxHtmlURLType WXUNUSED(type),
+ const wxString& WXUNUSED(url),
+ wxString *WXUNUSED(redirect)) const
+ { return wxHTML_OPEN; }
+
+#if wxUSE_CLIPBOARD
+ // Helper functions to select parts of page:
+ void SelectWord(const wxPoint& pos);
+ void SelectLine(const wxPoint& pos);
+ void SelectAll();
+
+ // Convert selection to text:
+ wxString SelectionToText() { return DoSelectionToText(m_selection); }
+
+ // Converts current page to text:
+ wxString ToText();
+#endif // wxUSE_CLIPBOARD
+
+ virtual void OnInternalIdle();
+
+ /// Returns standard HTML cursor as used by wxHtmlWindow
+ static wxCursor GetDefaultHTMLCursor(HTMLCursor type);
+
+protected:
+ void Init();
+
+ // Scrolls to anchor of this name. (Anchor is #news
+ // or #features etc. it is part of address sometimes:
+ // http://www.ms.mff.cuni.cz/~vsla8348/wxhtml/index.html#news)
+ // Return value : true if anchor exists, false otherwise
+ bool ScrollToAnchor(const wxString& anchor);
+
+ // Prepares layout (= fill m_PosX, m_PosY for fragments) based on
+ // actual size of window. This method also setup scrollbars
+ void CreateLayout();
+
+ void OnPaint(wxPaintEvent& event);
+ void OnEraseBackground(wxEraseEvent& event);
+ void OnSize(wxSizeEvent& event);
+ void OnMouseMove(wxMouseEvent& event);
+ void OnMouseDown(wxMouseEvent& event);
+ void OnMouseUp(wxMouseEvent& event);
+#if wxUSE_CLIPBOARD
+ void OnKeyUp(wxKeyEvent& event);
+ void OnDoubleClick(wxMouseEvent& event);
+ void OnCopy(wxCommandEvent& event);
+ void OnClipboardEvent(wxClipboardTextEvent& event);
+ void OnMouseEnter(wxMouseEvent& event);
+ void OnMouseLeave(wxMouseEvent& event);
+ void OnMouseCaptureLost(wxMouseCaptureLostEvent& event);
+#endif // wxUSE_CLIPBOARD
+
+ // Returns new filter (will be stored into m_DefaultFilter variable)
+ virtual wxHtmlFilter *GetDefaultFilter() {return new wxHtmlFilterPlainText;}
+
+ // cleans static variables
+ static void CleanUpStatics();
+
+ // Returns true if text selection is enabled (wxClipboard must be available
+ // and wxHW_NO_SELECTION not used)
+ bool IsSelectionEnabled() const;
+
+ enum ClipboardType
+ {
+ Primary,
+ Secondary
+ };
+
+ // Copies selection to clipboard if the clipboard support is available
+ //
+ // returns true if anything was copied to clipboard, false otherwise
+ bool CopySelection(ClipboardType t = Secondary);
+
+#if wxUSE_CLIPBOARD
+ // Automatic scrolling during selection:
+ void StopAutoScrolling();
+#endif // wxUSE_CLIPBOARD
+
+ wxString DoSelectionToText(wxHtmlSelection *sel);
+
+public:
+ // wxHtmlWindowInterface methods:
+ virtual void SetHTMLWindowTitle(const wxString& title);
+ virtual void OnHTMLLinkClicked(const wxHtmlLinkInfo& link);
+ virtual wxHtmlOpeningStatus OnHTMLOpeningURL(wxHtmlURLType type,
+ const wxString& url,
+ wxString *redirect) const;
+ virtual wxPoint HTMLCoordsToWindow(wxHtmlCell *cell,
+ const wxPoint& pos) const;
+ virtual wxWindow* GetHTMLWindow();
+ virtual wxColour GetHTMLBackgroundColour() const;
+ virtual void SetHTMLBackgroundColour(const wxColour& clr);
+ virtual void SetHTMLBackgroundImage(const wxBitmap& bmpBg);
+ virtual void SetHTMLStatusText(const wxString& text);
+ virtual wxCursor GetHTMLCursor(HTMLCursor type) const;
+
+ // implementation of SetPage()
+ bool DoSetPage(const wxString& source);
+
+protected:
+ // This is pointer to the first cell in parsed data. (Note: the first cell
+ // is usually top one = all other cells are sub-cells of this one)
+ wxHtmlContainerCell *m_Cell;
+ // parser which is used to parse HTML input.
+ // Each wxHtmlWindow has its own parser because sharing one global
+ // parser would be problematic (because of reentrancy)
+ wxHtmlWinParser *m_Parser;
+ // contains name of actually opened page or empty string if no page opened
+ wxString m_OpenedPage;
+ // contains name of current anchor within m_OpenedPage
+ wxString m_OpenedAnchor;
+ // contains title of actually opened page or empty string if no <TITLE> tag
+ wxString m_OpenedPageTitle;
+ // class for opening files (file system)
+ wxFileSystem* m_FS;
+
+ // frame in which page title should be displayed & number of its statusbar
+ // reserved for usage with this html window
+ wxFrame *m_RelatedFrame;
+#if wxUSE_STATUSBAR
+ int m_RelatedStatusBarIndex;
+ wxStatusBar* m_RelatedStatusBar;
+#endif // wxUSE_STATUSBAR
+ wxString m_TitleFormat;
+
+ // borders (free space between text and window borders)
+ // defaults to 10 pixels.
+ int m_Borders;
+
+ // current text selection or NULL
+ wxHtmlSelection *m_selection;
+
+ // true if the user is dragging mouse to select text
+ bool m_makingSelection;
+
+#if wxUSE_CLIPBOARD
+ // time of the last doubleclick event, used to detect tripleclicks
+ // (tripleclicks are used to select whole line):
+ wxMilliClock_t m_lastDoubleClick;
+
+ // helper class to automatically scroll the window if the user is selecting
+ // text and the mouse leaves wxHtmlWindow:
+ wxHtmlWinAutoScrollTimer *m_timerAutoScroll;
+#endif // wxUSE_CLIPBOARD
+
+private:
+ // erase the window background using m_bmpBg or just solid colour if we
+ // don't have any background image
+ void DoEraseBackground(wxDC& dc);
+
+ // window content for double buffered rendering, may be invalid until it is
+ // really initialized in OnPaint()
+ wxBitmap m_backBuffer;
+
+ // background image, may be invalid
+ wxBitmap m_bmpBg;
+
+ // variables used when user is selecting text
+ wxPoint m_tmpSelFromPos;
+ wxHtmlCell *m_tmpSelFromCell;
+
+ // if >0 contents of the window is not redrawn
+ // (in order to avoid ugly blinking)
+ int m_tmpCanDrawLocks;
+
+ // list of HTML filters
+ static wxList m_Filters;
+ // this filter is used when no filter is able to read some file
+ static wxHtmlFilter *m_DefaultFilter;
+
+ // html processors array:
+ wxHtmlProcessorList *m_Processors;
+ static wxHtmlProcessorList *m_GlobalProcessors;
+
+ // browser history
+ wxHtmlHistoryArray *m_History;
+ int m_HistoryPos;
+ // if this FLAG is false, items are not added to history
+ bool m_HistoryOn;
+
+ // Flag used to communicate between OnPaint() and OnEraseBackground(), see
+ // the comments near its use.
+ bool m_isBgReallyErased;
+
+ // standard mouse cursors
+ static wxCursor *ms_cursorLink;
+ static wxCursor *ms_cursorText;
+
+ DECLARE_EVENT_TABLE()
+ wxDECLARE_NO_COPY_CLASS(wxHtmlWindow);
+};
+
+class WXDLLIMPEXP_FWD_HTML wxHtmlCellEvent;
projects / wxWidgets.git / blobdiff