X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1338c59a025505bc066be220fe56e898a72b3ad3..d33704ddf2884c8b1cf1178e3cee6d2e1b4004f0:/include/wx/html/htmlwin.h diff --git a/include/wx/html/htmlwin.h b/include/wx/html/htmlwin.h index 6a4e2fdf2e..dd22df3b2d 100644 --- a/include/wx/html/htmlwin.h +++ b/include/wx/html/htmlwin.h @@ -4,35 +4,31 @@ // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik -// Licence: wxWindows Licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// - #ifndef _WX_HTMLWIN_H_ #define _WX_HTMLWIN_H_ -#if defined(__GNUG__) && !defined(__APPLE__) -#pragma interface "htmlwin.h" -#endif - #include "wx/defs.h" #if wxUSE_HTML #include "wx/window.h" #include "wx/scrolwin.h" #include "wx/config.h" -#include "wx/treectrl.h" +#include "wx/stopwatch.h" #include "wx/html/winpars.h" #include "wx/html/htmlcell.h" #include "wx/filesys.h" #include "wx/html/htmlfilt.h" #include "wx/filename.h" +#include "wx/bitmap.h" class wxHtmlProcessor; class wxHtmlWinModule; class wxHtmlHistoryArray; class wxHtmlProcessorList; -class WXDLLEXPORT wxHtmlWinAutoScrollTimer; +class WXDLLIMPEXP_HTML wxHtmlWinAutoScrollTimer; // wxHtmlWindow flags: @@ -42,15 +38,187 @@ class WXDLLEXPORT wxHtmlWinAutoScrollTimer; #define wxHW_DEFAULT_STYLE wxHW_SCROLLBAR_AUTO - -// enums for wxHtmlWindow::OnOpeningURL +/// Enum for wxHtmlWindow::OnOpeningURL and wxHtmlWindowInterface::OnOpeningURL enum wxHtmlOpeningStatus { + /// Open the requested URL wxHTML_OPEN, + /// Do not open the URL wxHTML_BLOCK, + /// Redirect to another URL (returned from OnOpeningURL) wxHTML_REDIRECT }; +/** + Abstract interface to a HTML rendering window (such as wxHtmlWindow or + wxHtmlListBox) that is passed to wxHtmlWinParser. It encapsulates all + communication from the parser to the window. + */ +class WXDLLIMPEXP_HTML wxHtmlWindowInterface +{ +public: + /// Ctor + wxHtmlWindowInterface() {} + virtual ~wxHtmlWindowInterface() {} + + /** + Called by the parser to set window's title to given text. + */ + virtual void SetHTMLWindowTitle(const wxString& title) = 0; + + /** + Called when a link is clicked. + + @param link information about the clicked link + */ + virtual void OnHTMLLinkClicked(const wxHtmlLinkInfo& link) = 0; + + /** + Called when the parser needs to open another URL (e.g. an image). + + @param type Type of the URL request (e.g. image) + @param url URL the parser wants to open + @param redirect If the return value is wxHTML_REDIRECT, then the + URL to redirect to will be stored in this variable + (the pointer must never be NULL) + + @return indicator of how to treat the request + */ + virtual wxHtmlOpeningStatus OnHTMLOpeningURL(wxHtmlURLType type, + const wxString& url, + wxString *redirect) const = 0; + + /** + Converts coordinates @a pos relative to given @a cell to + physical coordinates in the window. + */ + virtual wxPoint HTMLCoordsToWindow(wxHtmlCell *cell, + const wxPoint& pos) const = 0; + + /// Returns the window used for rendering (may be NULL). + virtual wxWindow* GetHTMLWindow() = 0; + + /// Returns background colour to use by default. + virtual wxColour GetHTMLBackgroundColour() const = 0; + + /// Sets window's background to colour @a clr. + virtual void SetHTMLBackgroundColour(const wxColour& clr) = 0; + + /// Sets window's background to given bitmap. + virtual void SetHTMLBackgroundImage(const wxBitmap& bmpBg) = 0; + + /// Sets status bar text. + virtual void SetHTMLStatusText(const wxString& text) = 0; + + /// Type of mouse cursor + enum HTMLCursor + { + /// Standard mouse cursor (typically an arrow) + HTMLCursor_Default, + /// Cursor shown over links + HTMLCursor_Link, + /// Cursor shown over selectable text + HTMLCursor_Text + }; + + /** + Returns mouse cursor of given @a type. + */ + virtual wxCursor GetHTMLCursor(HTMLCursor type) const = 0; +}; + +/** + Helper class that implements part of mouse handling for wxHtmlWindow and + wxHtmlListBox. Cursor changes and clicking on links are handled, text + selection is not. + */ +class WXDLLIMPEXP_HTML wxHtmlWindowMouseHelper +{ +protected: + /** + Ctor. + + @param iface Interface to the owner window. + */ + wxHtmlWindowMouseHelper(wxHtmlWindowInterface *iface); + + /** + Virtual dtor. + + It is not really needed in this case but at leats it prevents gcc from + complaining about its absence. + */ + virtual ~wxHtmlWindowMouseHelper() { } + + /// Returns true if the mouse moved since the last call to HandleIdle + bool DidMouseMove() const { return m_tmpMouseMoved; } + + /// Call this from EVT_MOTION event handler + void HandleMouseMoved(); + + /** + Call this from EVT_LEFT_UP handler (or, alternatively, EVT_LEFT_DOWN). + + @param rootCell HTML cell inside which the click occured. This doesn't + have to be the leaf cell, it can be e.g. toplevel + container, but the mouse must be inside the container's + area, otherwise the event would be ignored. + @param pos Mouse position in coordinates relative to @a cell + @param event The event that triggered the call + */ + bool HandleMouseClick(wxHtmlCell *rootCell, + const wxPoint& pos, const wxMouseEvent& event); + + /** + Call this from OnInternalIdle of the HTML displaying window. Handles + mouse movements and must be used together with HandleMouseMoved. + + @param rootCell HTML cell inside which the click occured. This doesn't + have to be the leaf cell, it can be e.g. toplevel + container, but the mouse must be inside the container's + area, otherwise the event would be ignored. + @param pos Current mouse position in coordinates relative to + @a cell + */ + void HandleIdle(wxHtmlCell *rootCell, const wxPoint& pos); + + /** + Called by HandleIdle when the mouse hovers over a cell. Default + behaviour is to do nothing. + + @param cell the cell the mouse is over + @param x, y coordinates of mouse relative to the cell + */ + virtual void OnCellMouseHover(wxHtmlCell *cell, wxCoord x, wxCoord y); + + /** + Called by HandleMouseClick when the user clicks on a cell. + Default behavior is to call wxHtmlWindowInterface::OnLinkClicked() + if this cell corresponds to a hypertext link. + + @param cell the cell the mouse is over + @param x, y coordinates of mouse relative to the cell + @param event The event that triggered the call + + + @return true if a link was clicked, false otherwise. + */ + virtual bool OnCellClicked(wxHtmlCell *cell, + wxCoord x, wxCoord y, + const wxMouseEvent& event); + +protected: + // this flag indicates if the mouse moved (used by HandleIdle) + bool m_tmpMouseMoved; + // contains last link name + wxHtmlLinkInfo *m_tmpLastLink; + // contains the last (terminal) cell which contained the mouse + wxHtmlCell *m_tmpLastCell; + +private: + wxHtmlWindowInterface *m_interface; +}; + // ---------------------------------------------------------------------------- // wxHtmlWindow // (This is probably the only class you will directly use.) @@ -62,25 +230,28 @@ enum wxHtmlOpeningStatus // SetPage(text) or LoadPage(filename). // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxHtmlWindow : public wxScrolledWindow +class WXDLLIMPEXP_HTML wxHtmlWindow : public wxScrolledWindow, + public wxHtmlWindowInterface, + public wxHtmlWindowMouseHelper { DECLARE_DYNAMIC_CLASS(wxHtmlWindow) friend class wxHtmlWinModule; public: - wxHtmlWindow() { Init(); } - wxHtmlWindow(wxWindow *parent, wxWindowID id = -1, + 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); } ~wxHtmlWindow(); - bool Create(wxWindow *parent, wxWindowID id = -1, + bool Create(wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = wxHW_SCROLLBAR_AUTO, @@ -89,8 +260,8 @@ public: // 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 occured, TRUE otherwise - bool SetPage(const wxString& source); + // Return value : false if an error occurred, true otherwise + virtual bool SetPage(const wxString& source); // Append to current page bool AppendToPage(const wxString& source); @@ -121,17 +292,29 @@ public: 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 bar); +#endif // wxUSE_STATUSBAR // Sets fonts to be used when displaying HTML page. - void SetFonts(wxString normal_face, wxString fixed_face, + 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; } + // 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. @@ -140,7 +323,7 @@ public: virtual void WriteCustomization(wxConfigBase *cfg, wxString path = wxEmptyString); // Goes to previous/next page (in browsing history) - // Returns TRUE if successful, FALSE otherwise + // Returns true if successful, false otherwise bool HistoryBack(); bool HistoryForward(); bool HistoryCanBack(); @@ -163,8 +346,6 @@ public: // Adds HTML processor to wxHtmlWindow class as whole: static void AddGlobalProcessor(wxHtmlProcessor *processor); - // what would we do with it? - virtual bool AcceptsFocusFromKeyboard() const { return FALSE; } // -- Callbacks -- @@ -172,36 +353,44 @@ public: // (depending on the information passed to SetRelatedFrame() method) virtual void OnSetTitle(const wxString& title); - // Called when the mouse hovers over a cell: (x, y) are logical coords - // Default behaviour is to do nothing at all - virtual void OnCellMouseHover(wxHtmlCell *cell, wxCoord x, wxCoord y); - - // Called when user clicks on a cell. Default behavior is to call - // OnLinkClicked() if this cell corresponds to a hypertext link - virtual void OnCellClicked(wxHtmlCell *cell, - wxCoord x, wxCoord y, - const wxMouseEvent& event); - // Called when user clicked on hypertext link. Default behavior 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, + // 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 + // Return value : true if anchor exists, false otherwise bool ScrollToAnchor(const wxString& anchor); // Prepares layout (= fill m_PosX, m_PosY for fragments) based on @@ -214,13 +403,13 @@ protected: void OnMouseMove(wxMouseEvent& event); void OnMouseDown(wxMouseEvent& event); void OnMouseUp(wxMouseEvent& event); - void OnIdle(wxIdleEvent& event); #if wxUSE_CLIPBOARD void OnKeyUp(wxKeyEvent& event); + void OnDoubleClick(wxMouseEvent& event); void OnCopy(wxCommandEvent& event); void OnMouseEnter(wxMouseEvent& event); void OnMouseLeave(wxMouseEvent& event); -#endif +#endif // wxUSE_CLIPBOARD // Returns new filter (will be stored into m_DefaultFilter variable) virtual wxHtmlFilter *GetDefaultFilter() {return new wxHtmlFilterPlainText;} @@ -232,20 +421,42 @@ protected: // and wxHW_NO_SELECTION not used) bool IsSelectionEnabled() const; -#if wxUSE_CLIPBOARD - // Convert selection to text: - wxString SelectionToText(); - enum ClipboardType { Primary, Secondary }; - - // Copies selection to clipboard: - void CopySelection(ClipboardType t = 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 +#endif // wxUSE_CLIPBOARD + + wxString DoSelectionToText(wxHtmlSelection *sel); + +private: + // 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 @@ -266,9 +477,11 @@ protected: wxFrame *m_RelatedFrame; wxString m_TitleFormat; +#if wxUSE_STATUSBAR // frame in which page title should be displayed & number of it's statusbar // reserved for usage with this html window int m_RelatedStatusBar; +#endif // wxUSE_STATUSBAR // borders (free space between text and window borders) // defaults to 10 pixels. @@ -283,24 +496,26 @@ protected: 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 +#endif // wxUSE_CLIPBOARD private: // window content for double buffered rendering: wxBitmap *m_backBuffer; - + + // background image, may be invalid + wxBitmap m_bmpBg; + // variables used when user is selecting text wxPoint m_tmpSelFromPos; wxHtmlCell *m_tmpSelFromCell; - - // a flag indicated if mouse moved - // (if TRUE we will try to change cursor in last call to OnIdle) - bool m_tmpMouseMoved; - // contains last link name - wxHtmlLinkInfo *m_tmpLastLink; - // contains the last (terminal) cell which contained the mouse - wxHtmlCell *m_tmpLastCell; + // if >0 contents of the window is not redrawn // (in order to avoid ugly blinking) int m_tmpCanDrawLocks; @@ -310,25 +525,30 @@ private: // this filter is used when no filter is able to read some file static wxHtmlFilter *m_DefaultFilter; - static wxCursor *s_cur_hand; - static wxCursor *s_cur_arrow; + // html processors array: + wxHtmlProcessorList *m_Processors; + static wxHtmlProcessorList *m_GlobalProcessors; - wxHtmlHistoryArray *m_History; // browser history + wxHtmlHistoryArray *m_History; int m_HistoryPos; // if this FLAG is false, items are not added to history bool m_HistoryOn; - // html processors array: - wxHtmlProcessorList *m_Processors; - static wxHtmlProcessorList *m_GlobalProcessors; + // a flag set if we need to erase background in OnPaint() (otherwise this + // is supposed to have been done in OnEraseBackground()) + bool m_eraseBgInOnPaint; + + // standard mouse cursors + static wxCursor *ms_cursorLink; + static wxCursor *ms_cursorText; DECLARE_EVENT_TABLE() DECLARE_NO_COPY_CLASS(wxHtmlWindow) }; -#endif +#endif // wxUSE_HTML #endif // _WX_HTMLWIN_H_