include/wx/gtk/textctrl.h

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