include/wx/gtk/textctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/textctrl.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef __GTKTEXTCTRLH__
  12 #define __GTKTEXTCTRLH__
  13
  14 #ifdef __GNUG__
  15     #pragma interface "textctrl.h"
  16 #endif
  17
  18 //-----------------------------------------------------------------------------
  19 // wxTextCtrl
  20 //-----------------------------------------------------------------------------
  21
  22 class wxTextCtrl: public wxTextCtrlBase
  23 {
  24 public:
  25     wxTextCtrl() { Init(); }
  26     wxTextCtrl(wxWindow *parent,
  27                wxWindowID id,
  28                const wxString &value = wxEmptyString,
  29                const wxPoint &pos = wxDefaultPosition,
  30                const wxSize &size = wxDefaultSize,
  31                long style = 0,
  32                const wxValidator& validator = wxDefaultValidator,
  33                const wxString &name = wxTextCtrlNameStr);
  34
  35     bool Create(wxWindow *parent,
  36                 wxWindowID id,
  37                 const wxString &value = wxEmptyString,
  38                 const wxPoint &pos = wxDefaultPosition,
  39                 const wxSize &size = wxDefaultSize,
  40                 long style = 0,
  41                 const wxValidator& validator = wxDefaultValidator,
  42                 const wxString &name = wxTextCtrlNameStr);
  43
  44     // implement base class pure virtuals
  45     // ----------------------------------
  46
  47     virtual wxString GetValue() const;
  48     virtual void SetValue(const wxString& value);
  49
  50     virtual int GetLineLength(long lineNo) const;
  51     virtual wxString GetLineText(long lineNo) const;
  52     virtual int GetNumberOfLines() const;
  53
  54     virtual bool IsModified() const;
  55     virtual bool IsEditable() const;
  56
  57     // If the return values from and to are the same, there is no selection.
  58     virtual void GetSelection(long* from, long* to) const;
  59
  60     // operations
  61     // ----------
  62
  63     // editing
  64     virtual void Clear();
  65     virtual void Replace(long from, long to, const wxString& value);
  66     virtual void Remove(long from, long to);
  67
  68     // clears the dirty flag
  69     virtual void DiscardEdits();
  70
  71     virtual void SetMaxLength(unsigned long len);
  72
  73     // writing text inserts it at the current position, appending always
  74     // inserts it at the end
  75     virtual void WriteText(const wxString& text);
  76     virtual void AppendText(const wxString& text);
  77
  78     // apply text attribute to the range of text (only works with richedit
  79     // controls)
  80     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  81
  82     // translate between the position (which is just an index in the text ctrl
  83     // considering all its contents as a single strings) and (x, y) coordinates
  84     // which represent column and line.
  85     virtual long XYToPosition(long x, long y) const;
  86     virtual bool PositionToXY(long pos, long *x, long *y) const;
  87
  88     virtual void ShowPosition(long pos);
  89
  90     // Clipboard operations
  91     virtual void Copy();
  92     virtual void Cut();
  93     virtual void Paste();
  94
  95     // Undo/redo
  96     virtual void Undo();
  97     virtual void Redo();
  98
  99     virtual bool CanUndo() const;
 100     virtual bool CanRedo() const;
 101
 102     // Insertion point
 103     virtual void SetInsertionPoint(long pos);
 104     virtual void SetInsertionPointEnd();
 105     virtual long GetInsertionPoint() const;
 106     virtual long GetLastPosition() const;
 107
 108     virtual void SetSelection(long from, long to);
 109     virtual void SetEditable(bool editable);
 110
 111     virtual bool Enable( bool enable = TRUE );
 112
 113     // Implementation from now on
 114     void OnDropFiles( wxDropFilesEvent &event );
 115     void OnChar( wxKeyEvent &event );
 116
 117     void OnCut(wxCommandEvent& event);
 118     void OnCopy(wxCommandEvent& event);
 119     void OnPaste(wxCommandEvent& event);
 120     void OnUndo(wxCommandEvent& event);
 121     void OnRedo(wxCommandEvent& event);
 122
 123     void OnUpdateCut(wxUpdateUIEvent& event);
 124     void OnUpdateCopy(wxUpdateUIEvent& event);
 125     void OnUpdatePaste(wxUpdateUIEvent& event);
 126     void OnUpdateUndo(wxUpdateUIEvent& event);
 127     void OnUpdateRedo(wxUpdateUIEvent& event);
 128
 129     bool SetFont(const wxFont& font);
 130     bool SetForegroundColour(const wxColour& colour);
 131     bool SetBackgroundColour(const wxColour& colour);
 132
 133     GtkWidget* GetConnectWidget();
 134     bool IsOwnGtkWindow( GdkWindow *window );
 135     void ApplyWidgetStyle();
 136     void CalculateScrollbar();
 137     void OnInternalIdle();
 138     void UpdateFontIfNeeded();
 139
 140     void SetModified() { m_modified = TRUE; }
 141
 142     // GTK+ textctrl is so dumb that you need to freeze/thaw it manually to
 143     // avoid horrible flicker/scrolling back and forth
 144     virtual void Freeze();
 145     virtual void Thaw();
 146
 147     // textctrl specific scrolling
 148     virtual bool ScrollLines(int lines);
 149     virtual bool ScrollPages(int pages);
 150
 151     // implementation only from now on
 152
 153     // wxGTK-specific: called recursively by Enable,
 154     // to give widgets an oppprtunity to correct their colours after they
 155     // have been changed by Enable
 156     virtual void OnParentEnable( bool enable ) ;
 157
 158     // tell the control to ignore next text changed signal
 159     void IgnoreNextTextUpdate();
 160
 161     // should we ignore the changed signal? always resets the flag
 162     bool IgnoreTextUpdate();
 163
 164 protected:
 165     virtual wxSize DoGetBestSize() const;
 166
 167     // common part of all ctors
 168     void Init();
 169
 170     // get the vertical adjustment, if any, NULL otherwise
 171     GtkAdjustment *GetVAdj() const;
 172
 173     // scroll the control by the given number of pixels, return true if the
 174     // scroll position changed
 175     bool DoScroll(GtkAdjustment *adj, int diff);
 176
 177 private:
 178     // change the font for everything in this control
 179     void ChangeFontGlobally();
 180
 181     GtkWidget  *m_text;
 182     GtkWidget  *m_vScrollbar;
 183
 184     bool        m_modified:1;
 185     bool        m_vScrollbarVisible:1;
 186     bool        m_updateFont:1;
 187     bool        m_ignoreNextUpdate:1;
 188
 189     DECLARE_EVENT_TABLE()
 190     DECLARE_DYNAMIC_CLASS(wxTextCtrl);
 191 };
 192
 193 #endif // __GTKTEXTCTRLH__
 194