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 //-----------------------------------------------------------------------------
  15 // wxTextCtrl
  16 //-----------------------------------------------------------------------------
  17
  18 class WXDLLIMPEXP_CORE wxTextCtrl: public wxTextCtrlBase
  19 {
  20 public:
  21     wxTextCtrl() { Init(); }
  22     wxTextCtrl(wxWindow *parent,
  23                wxWindowID id,
  24                const wxString &value = wxEmptyString,
  25                const wxPoint &pos = wxDefaultPosition,
  26                const wxSize &size = wxDefaultSize,
  27                long style = 0,
  28                const wxValidator& validator = wxDefaultValidator,
  29                const wxString &name = wxTextCtrlNameStr);
  30
  31     virtual ~wxTextCtrl();
  32
  33     bool Create(wxWindow *parent,
  34                 wxWindowID id,
  35                 const wxString &value = wxEmptyString,
  36                 const wxPoint &pos = wxDefaultPosition,
  37                 const wxSize &size = wxDefaultSize,
  38                 long style = 0,
  39                 const wxValidator& validator = wxDefaultValidator,
  40                 const wxString &name = wxTextCtrlNameStr);
  41
  42     // implement base class pure virtuals
  43     // ----------------------------------
  44
  45     virtual wxString GetValue() const;
  46     virtual bool IsEmpty() const;
  47
  48     virtual int GetLineLength(long lineNo) const;
  49     virtual wxString GetLineText(long lineNo) const;
  50     virtual int GetNumberOfLines() const;
  51
  52     virtual bool IsModified() const;
  53     virtual bool IsEditable() const;
  54
  55     // If the return values from and to are the same, there is no selection.
  56     virtual void GetSelection(long* from, long* to) const;
  57
  58     // operations
  59     // ----------
  60
  61     // editing
  62     virtual void Clear();
  63     virtual void Replace(long from, long to, const wxString& value);
  64     virtual void Remove(long from, long to);
  65
  66     // sets/clears the dirty flag
  67     virtual void MarkDirty();
  68     virtual void DiscardEdits();
  69
  70     virtual void SetMaxLength(unsigned long len);
  71
  72     // writing text inserts it at the current position, appending always
  73     // inserts it at the end
  74     virtual void WriteText(const wxString& text);
  75     virtual void AppendText(const wxString& text);
  76
  77     // apply text attribute to the range of text (only works with richedit
  78     // controls)
  79     virtual bool SetStyle(long start, long end, const wxTextAttr& style);
  80
  81     // translate between the position (which is just an index in the text ctrl
  82     // considering all its contents as a single strings) and (x, y) coordinates
  83     // which represent column and line.
  84     virtual long XYToPosition(long x, long y) const;
  85     virtual bool PositionToXY(long pos, long *x, long *y) const;
  86
  87     virtual void ShowPosition(long pos);
  88
  89     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
  90     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
  91                                             wxTextCoord *col,
  92                                             wxTextCoord *row) const
  93     {
  94         return wxTextCtrlBase::HitTest(pt, col, row);
  95     }
  96
  97     // Clipboard operations
  98     virtual void Copy();
  99     virtual void Cut();
 100     virtual void Paste();
 101
 102     // Undo/redo
 103     virtual void Undo();
 104     virtual void Redo();
 105
 106     virtual bool CanUndo() const;
 107     virtual bool CanRedo() const;
 108
 109     // Insertion point
 110     virtual void SetInsertionPoint(long pos);
 111     virtual void SetInsertionPointEnd();
 112     virtual long GetInsertionPoint() const;
 113     virtual wxTextPos GetLastPosition() const;
 114
 115     virtual void SetSelection(long from, long to);
 116     virtual void SetEditable(bool editable);
 117
 118     virtual bool Enable( bool enable = true );
 119
 120     // Implementation from now on
 121     void OnDropFiles( wxDropFilesEvent &event );
 122     void OnChar( wxKeyEvent &event );
 123
 124     void OnCut(wxCommandEvent& event);
 125     void OnCopy(wxCommandEvent& event);
 126     void OnPaste(wxCommandEvent& event);
 127     void OnUndo(wxCommandEvent& event);
 128     void OnRedo(wxCommandEvent& event);
 129
 130     void OnUpdateCut(wxUpdateUIEvent& event);
 131     void OnUpdateCopy(wxUpdateUIEvent& event);
 132     void OnUpdatePaste(wxUpdateUIEvent& event);
 133     void OnUpdateUndo(wxUpdateUIEvent& event);
 134     void OnUpdateRedo(wxUpdateUIEvent& event);
 135
 136     bool SetFont(const wxFont& font);
 137     bool SetForegroundColour(const wxColour& colour);
 138     bool SetBackgroundColour(const wxColour& colour);
 139
 140     GtkWidget* GetConnectWidget();
 141     void CalculateScrollbar();
 142
 143     void SetUpdateFont(bool WXUNUSED(update)) { }
 144
 145     // GTK+ textctrl is so dumb that you need to freeze/thaw it manually to
 146     // avoid horrible flicker/scrolling back and forth
 147     virtual void Freeze();
 148     virtual void Thaw();
 149
 150     // implementation only from now on
 151
 152     // wxGTK-specific: called recursively by Enable,
 153     // to give widgets an oppprtunity to correct their colours after they
 154     // have been changed by Enable
 155     virtual void OnParentEnable( bool enable ) ;
 156
 157     // tell the control to ignore next text changed signal
 158     void IgnoreNextTextUpdate(int n = 1) { m_countUpdatesToIgnore = n; }
 159
 160     // should we ignore the changed signal? always resets the flag
 161     bool IgnoreTextUpdate();
 162
 163     // call this to indicate that the control is about to be changed
 164     // programmatically and so m_modified flag shouldn't be set
 165     void DontMarkDirtyOnNextChange() { m_dontMarkDirty = true; }
 166
 167     // should we mark the control as dirty? always resets the flag
 168     bool MarkDirtyOnChange();
 169
 170     // always let GTK have mouse release events for multiline controls
 171     virtual bool GTKProcessEvent(wxEvent& event) const;
 172
 173
 174     static wxVisualAttributes
 175     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 176
 177     // has the control been frozen by Freeze()?
 178     bool IsFrozen() const { return m_frozenness > 0; }
 179
 180 protected:
 181     virtual wxSize DoGetBestSize() const;
 182     virtual void DoApplyWidgetStyle(GtkRcStyle *style);
 183     virtual GdkWindow *GTKGetWindow(wxArrayGdkWindows& windows) const;
 184
 185     // common part of all ctors
 186     void Init();
 187
 188     // Widgets that use the style->base colour for the BG colour should
 189     // override this and return true.
 190     virtual bool UseGTKStyleBase() const { return true; }
 191
 192     virtual void DoSetValue(const wxString &value, int flags = 0);
 193
 194 private:
 195     // change the font for everything in this control
 196     void ChangeFontGlobally();
 197
 198     // get the encoding which is used in this control: this looks at our font
 199     // and default style but not the current style (i.e. the style for the
 200     // current position); returns wxFONTENCODING_SYSTEM if we have no specific
 201     // encoding
 202     wxFontEncoding GetTextEncoding() const;
 203
 204
 205     GtkWidget  *m_text;
 206
 207     bool        m_modified:1;
 208     bool        m_dontMarkDirty:1;
 209
 210     int         m_countUpdatesToIgnore;
 211
 212     // Our text buffer. Convenient, and holds the buffer while using
 213     // a dummy one when m_frozenness > 0
 214     GtkTextBuffer *m_buffer;
 215
 216     // number of calls to Freeze() minus number of calls to Thaw()
 217     unsigned int m_frozenness;
 218
 219     // For wxTE_AUTO_URL
 220     void OnUrlMouseEvent(wxMouseEvent&);
 221     GdkCursor *m_gdkHandCursor;
 222     GdkCursor *m_gdkXTermCursor;
 223
 224     DECLARE_EVENT_TABLE()
 225     DECLARE_DYNAMIC_CLASS(wxTextCtrl)
 226 };
 227
 228 #endif // __GTKTEXTCTRLH__
 229