X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/38caaa61b154f60871cb6ec82040362762dd2dba..e1ef506e13b7c8e96483b7fc0852dcb46688badd:/include/wx/html/htmlwin.h diff --git a/include/wx/html/htmlwin.h b/include/wx/html/htmlwin.h index b53d4d472e..bf2599a0ee 100644 --- a/include/wx/html/htmlwin.h +++ b/include/wx/html/htmlwin.h @@ -4,64 +4,269 @@ // 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_ -#ifdef __GNUG__ -#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 WXDLLIMPEXP_FWD_HTML wxHtmlWinAutoScrollTimer; +class WXDLLIMPEXP_FWD_HTML wxHtmlCellEvent; +class WXDLLIMPEXP_FWD_HTML wxHtmlLinkEvent; +class WXDLLIMPEXP_FWD_CORE wxStatusBar; + +// wxHtmlWindow flags: +#define wxHW_SCROLLBAR_NEVER 0x0002 +#define wxHW_SCROLLBAR_AUTO 0x0004 +#define wxHW_NO_SELECTION 0x0008 + +#define wxHW_DEFAULT_STYLE wxHW_SCROLLBAR_AUTO + +/// 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.) // Purpose of this class is to display HTML page (either local -// file or downloaded via HTTP protocol) in a window. Width -// of window is constant - given in constructor - virtual height -// is changed dynamicly depending on page size. -// Once the window is created you can set it's content by calling +// file or downloaded via HTTP protocol) in a window. Width of +// window is constant - given in constructor - virtual height +// is changed dynamicly depending on page size. Once the +// window is created you can set it's content by calling // 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() : wxScrolledWindow() {}; - 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_SCROLLBAR_AUTO, - const wxString& name = "htmlWindow"); - ~wxHtmlWindow(); + 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 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); // Load HTML page from given location. Location can be either // a) /usr/wxGTK2/docs/html/wx.htm @@ -74,6 +279,9 @@ public: // 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 @@ -86,20 +294,30 @@ 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); + void SetRelatedStatusBar(int index); + void SetRelatedStatusBar(wxStatusBar*, int index = 0); +#endif // wxUSE_STATUSBAR // Sets fonts to be used when displaying HTML page. - void SetFonts(wxString normal_face, wxString fixed_face, const int *sizes); + void SetFonts(const wxString& normal_face, const wxString& fixed_face, + const int *sizes = NULL); - // Sets the title of the window - // (depending on the information passed to SetRelatedFrame() method) - virtual void OnSetTitle(const wxString& title); + // 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. @@ -108,7 +326,7 @@ 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(); @@ -123,10 +341,6 @@ public: // Adds input filter static void AddFilter(wxHtmlFilter *filter); - // Called when users clicked on hypertext link. Default behavior is to - // call LoadPage(loc) - virtual void OnLinkClicked(const wxHtmlLinkInfo& link); - // Returns a pointer to the parser. wxHtmlWinParser *GetParser() const { return m_Parser; } @@ -135,21 +349,72 @@ public: // 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 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, + // 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 // actual size of window. This method also setup scrollbars void CreateLayout(); - void OnDraw(wxDC& dc); + void OnEraseBackground(wxEraseEvent& event); + void OnPaint(wxPaintEvent& event); void OnSize(wxSizeEvent& event); - void OnMouseEvent(wxMouseEvent& event); - void OnIdle(wxIdleEvent& 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;} @@ -157,9 +422,50 @@ protected: // 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) + // 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 it's own parser because sharing one global @@ -174,24 +480,46 @@ protected: // class for opening files (file system) wxFileSystem* m_FS; - wxFrame *m_RelatedFrame; - wxString m_TitleFormat; // frame in which page title should be displayed & number of it's statusbar // reserved for usage with this html window - int m_RelatedStatusBar; + 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; - int m_Style; + // 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: - // 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; + // 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; + // if >0 contents of the window is not redrawn // (in order to avoid ugly blinking) int m_tmpCanDrawLocks; @@ -201,23 +529,119 @@ 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) }; +class WXDLLIMPEXP_FWD_HTML wxHtmlCellEvent; + +wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_CELL_CLICKED, wxHtmlCellEvent ) +wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_CELL_HOVER, wxHtmlCellEvent ) +wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_LINK_CLICKED, wxHtmlLinkEvent ) -#endif + +/*! + * Html cell window event + */ + +class WXDLLIMPEXP_HTML wxHtmlCellEvent : public wxCommandEvent +{ +public: + wxHtmlCellEvent() {} + wxHtmlCellEvent(wxEventType commandType, int id, + wxHtmlCell *cell, const wxPoint &pt, + const wxMouseEvent &ev) + : wxCommandEvent(commandType, id) + { + m_cell = cell; + m_pt = pt; + m_mouseEvent = ev; + m_bLinkWasClicked = false; + } + + wxHtmlCell* GetCell() const { return m_cell; } + wxPoint GetPoint() const { return m_pt; } + wxMouseEvent GetMouseEvent() const { return m_mouseEvent; } + + void SetLinkClicked(bool linkclicked) { m_bLinkWasClicked=linkclicked; } + bool GetLinkClicked() const { return m_bLinkWasClicked; } + + // default copy ctor, assignment operator and dtor are ok + virtual wxEvent *Clone() const { return new wxHtmlCellEvent(*this); } + +private: + wxHtmlCell *m_cell; + wxMouseEvent m_mouseEvent; + wxPoint m_pt; + + bool m_bLinkWasClicked; + + DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxHtmlCellEvent) +}; + + + +/*! + * Html link event + */ + +class WXDLLIMPEXP_HTML wxHtmlLinkEvent : public wxCommandEvent +{ +public: + wxHtmlLinkEvent() {} + wxHtmlLinkEvent(int id, const wxHtmlLinkInfo &linkinfo) + : wxCommandEvent(wxEVT_COMMAND_HTML_LINK_CLICKED, id) + { + m_linkInfo = linkinfo; + } + + const wxHtmlLinkInfo &GetLinkInfo() const { return m_linkInfo; } + + // default copy ctor, assignment operator and dtor are ok + virtual wxEvent *Clone() const { return new wxHtmlLinkEvent(*this); } + +private: + wxHtmlLinkInfo m_linkInfo; + + DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxHtmlLinkEvent) +}; + + +typedef void (wxEvtHandler::*wxHtmlCellEventFunction)(wxHtmlCellEvent&); +typedef void (wxEvtHandler::*wxHtmlLinkEventFunction)(wxHtmlLinkEvent&); + +#define wxHtmlCellEventHandler(func) \ + wxEVENT_HANDLER_CAST(wxHtmlCellEventFunction, func) +#define wxHtmlLinkEventHandler(func) \ + wxEVENT_HANDLER_CAST(wxHtmlLinkEventFunction, func) + +#define EVT_HTML_CELL_CLICKED(id, fn) \ + wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_CELL_CLICKED, id, wxHtmlCellEventHandler(fn)) +#define EVT_HTML_CELL_HOVER(id, fn) \ + wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_CELL_HOVER, id, wxHtmlCellEventHandler(fn)) +#define EVT_HTML_LINK_CLICKED(id, fn) \ + wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_LINK_CLICKED, id, wxHtmlLinkEventHandler(fn)) + + +#endif // wxUSE_HTML #endif // _WX_HTMLWIN_H_ +