// 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_HTML wxHtmlWinAutoScrollTimer;
// wxHtmlWindow flags:
#define wxHW_SCROLLBAR_NEVER 0x0002
#define wxHW_SCROLLBAR_AUTO 0x0004
+#define wxHW_NO_SELECTION 0x0008
+
+#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.)
// 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() { 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_SCROLLBAR_AUTO,
+ 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,
// 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);
// 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
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, const int *sizes);
+ 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.
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();
// 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 --
// (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,
+
+ // 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 type,
- const wxString& url,
- wxString *redirect) const
+ 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 OnMouseEnter(wxMouseEvent& event);
+ void OnMouseLeave(wxMouseEvent& 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);
+
+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 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
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.
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;
- // contains the last (terminal) cell which contained the mouse
- wxHtmlCell *m_tmpLastCell;
+ // 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;
// 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_
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