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
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef __GTKTEXTCTRLH__
  12 #define __GTKTEXTCTRLH__
  13
  14 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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     // sets/clears the dirty flag
  69     virtual void MarkDirty();
  70     virtual void DiscardEdits();
  71
  72     virtual void SetMaxLength(unsigned long len);
  73
  74     // writing text inserts it at the current position, appending always
  75     // inserts it at the end
  76     virtual void WriteText(const wxString& text);
  77     virtual void AppendText(const wxString& text);
  78
  79     // apply text attribute to the range of text (only works with richedit
  80     // controls)
  81     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  82
  83     // translate between the position (which is just an index in the text ctrl
  84     // considering all its contents as a single strings) and (x, y) coordinates
  85     // which represent column and line.
  86     virtual long XYToPosition(long x, long y) const;
  87     virtual bool PositionToXY(long pos, long *x, long *y) const;
  88
  89     virtual void ShowPosition(long pos);
  90
  91 #ifdef __WXGTK20__
  92     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
  93     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
  94                                             wxTextCoord *col,
  95                                             wxTextCoord *row) const
  96     {
  97         return wxTextCtrlBase::HitTest(pt, col, row);
  98     }
  99 #endif // __WXGTK20__
 100
 101     // Clipboard operations
 102     virtual void Copy();
 103     virtual void Cut();
 104     virtual void Paste();
 105
 106     // Undo/redo
 107     virtual void Undo();
 108     virtual void Redo();
 109
 110     virtual bool CanUndo() const;
 111     virtual bool CanRedo() const;
 112
 113     // Insertion point
 114     virtual void SetInsertionPoint(long pos);
 115     virtual void SetInsertionPointEnd();
 116     virtual long GetInsertionPoint() const;
 117     virtual long GetLastPosition() const;
 118
 119     virtual void SetSelection(long from, long to);
 120     virtual void SetEditable(bool editable);
 121
 122     virtual bool Enable( bool enable = TRUE );
 123
 124     // Implementation from now on
 125     void OnDropFiles( wxDropFilesEvent &event );
 126     void OnChar( wxKeyEvent &event );
 127
 128     void OnCut(wxCommandEvent& event);
 129     void OnCopy(wxCommandEvent& event);
 130     void OnPaste(wxCommandEvent& event);
 131     void OnUndo(wxCommandEvent& event);
 132     void OnRedo(wxCommandEvent& event);
 133
 134     void OnUpdateCut(wxUpdateUIEvent& event);
 135     void OnUpdateCopy(wxUpdateUIEvent& event);
 136     void OnUpdatePaste(wxUpdateUIEvent& event);
 137     void OnUpdateUndo(wxUpdateUIEvent& event);
 138     void OnUpdateRedo(wxUpdateUIEvent& event);
 139
 140     bool SetFont(const wxFont& font);
 141     bool SetForegroundColour(const wxColour& colour);
 142     bool SetBackgroundColour(const wxColour& colour);
 143
 144     GtkWidget* GetConnectWidget();
 145     bool IsOwnGtkWindow( GdkWindow *window );
 146     void DoApplyWidgetStyle(GtkRcStyle *style);
 147     void CalculateScrollbar();
 148     void OnInternalIdle();
 149
 150 #ifdef __WXGTK20__
 151     void SetUpdateFont(bool WXUNUSED(update)) { }
 152 #else // !__WXGTK20__
 153     void SetUpdateFont(bool update) { m_updateFont = update; }
 154     void UpdateFontIfNeeded();
 155 #endif // __WXGTK20__/!__WXGTK20__
 156
 157     void SetModified() { m_modified = TRUE; }
 158
 159     // GTK+ textctrl is so dumb that you need to freeze/thaw it manually to
 160     // avoid horrible flicker/scrolling back and forth
 161     virtual void Freeze();
 162     virtual void Thaw();
 163
 164     // textctrl specific scrolling
 165     virtual bool ScrollLines(int lines);
 166     virtual bool ScrollPages(int pages);
 167
 168     // implementation only from now on
 169
 170     // wxGTK-specific: called recursively by Enable,
 171     // to give widgets an oppprtunity to correct their colours after they
 172     // have been changed by Enable
 173     virtual void OnParentEnable( bool enable ) ;
 174
 175     // tell the control to ignore next text changed signal
 176     void IgnoreNextTextUpdate();
 177
 178     // should we ignore the changed signal? always resets the flag
 179     bool IgnoreTextUpdate();
 180
 181     static wxVisualAttributes
 182     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 183
 184 protected:
 185     virtual wxSize DoGetBestSize() const;
 186
 187     // common part of all ctors
 188     void Init();
 189
 190     // get the vertical adjustment, if any, NULL otherwise
 191     GtkAdjustment *GetVAdj() const;
 192
 193     // scroll the control by the given number of pixels, return true if the
 194     // scroll position changed
 195     bool DoScroll(GtkAdjustment *adj, int diff);
 196
 197     // Widgets that use the style->base colour for the BG colour should
 198     // override this and return true.
 199     virtual bool UseGTKStyleBase() const { return true; }
 200
 201 #ifdef __WXGTK20__
 202     // has the control been frozen by Freeze()?
 203     bool IsFrozen() const { return m_frozenness > 0; }
 204 #endif
 205
 206 private:
 207     // change the font for everything in this control
 208     void ChangeFontGlobally();
 209
 210     GtkWidget  *m_text;
 211     GtkWidget  *m_vScrollbar;
 212
 213     bool        m_modified:1;
 214     bool        m_vScrollbarVisible:1;
 215 #ifndef __WXGTK20__
 216     bool        m_updateFont:1;
 217 #endif // !__WXGTK20__
 218     bool        m_ignoreNextUpdate:1;
 219
 220 #ifdef __WXGTK20__
 221     // Our text buffer. Convenient, and holds the buffer while using
 222     // a dummy one when m_frozenness > 0
 223     GtkTextBuffer *m_buffer;
 224
 225     // number of calls to Freeze() minus number of calls to Thaw()
 226     unsigned int m_frozenness;
 227 #endif
 228
 229     DECLARE_EVENT_TABLE()
 230     DECLARE_DYNAMIC_CLASS(wxTextCtrl);
 231 };
 232
 233 #endif // __GTKTEXTCTRLH__
 234