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 _WX_GTK_TEXTCTRL_H_
  12 #define _WX_GTK_TEXTCTRL_H_
  13
  14 typedef struct _GtkTextMark GtkTextMark;
  15
  16 //-----------------------------------------------------------------------------
  17 // wxTextCtrl
  18 //-----------------------------------------------------------------------------
  19
  20 class WXDLLIMPEXP_CORE wxTextCtrl: public wxTextCtrlBase
  21 {
  22 public:
  23     wxTextCtrl() { Init(); }
  24     wxTextCtrl(wxWindow *parent,
  25                wxWindowID id,
  26                const wxString &value = wxEmptyString,
  27                const wxPoint &pos = wxDefaultPosition,
  28                const wxSize &size = wxDefaultSize,
  29                long style = 0,
  30                const wxValidator& validator = wxDefaultValidator,
  31                const wxString &name = wxTextCtrlNameStr);
  32
  33     virtual ~wxTextCtrl();
  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 bool IsEmpty() const;
  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     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt, long *pos) const;
  92     virtual wxTextCtrlHitTestResult HitTest(const wxPoint& pt,
  93                                             wxTextCoord *col,
  94                                             wxTextCoord *row) const
  95     {
  96         return wxTextCtrlBase::HitTest(pt, col, row);
  97     }
  98
  99     // Clipboard operations
 100     virtual void Copy();
 101     virtual void Cut();
 102     virtual void Paste();
 103
 104     // Undo/redo
 105     virtual void Undo();
 106     virtual void Redo();
 107
 108     virtual bool CanUndo() const;
 109     virtual bool CanRedo() const;
 110
 111     // Insertion point
 112     virtual void SetInsertionPoint(long pos);
 113     virtual void SetInsertionPointEnd();
 114     virtual long GetInsertionPoint() const;
 115     virtual wxTextPos GetLastPosition() const;
 116
 117     virtual void SetSelection(long from, long to);
 118     virtual void SetEditable(bool editable);
 119
 120     // Overridden wxWindow methods
 121     virtual void SetWindowStyleFlag( long style );
 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
 146     void SetUpdateFont(bool WXUNUSED(update)) { }
 147
 148     // GTK+ textctrl is so dumb that you need to freeze/thaw it manually to
 149     // avoid horrible flicker/scrolling back and forth
 150     virtual void Freeze();
 151     virtual void Thaw();
 152
 153     // implementation only from now on
 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     // tell the control to ignore next text changed signal
 161     void IgnoreNextTextUpdate(int n = 1) { m_countUpdatesToIgnore = n; }
 162
 163     // should we ignore the changed signal? always resets the flag
 164     bool IgnoreTextUpdate();
 165
 166     // call this to indicate that the control is about to be changed
 167     // programmatically and so m_modified flag shouldn't be set
 168     void DontMarkDirtyOnNextChange() { m_dontMarkDirty = true; }
 169
 170     // should we mark the control as dirty? always resets the flag
 171     bool MarkDirtyOnChange();
 172
 173     // always let GTK have mouse release events for multiline controls
 174     virtual bool GTKProcessEvent(wxEvent& event) const;
 175
 176
 177     static wxVisualAttributes
 178     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 179
 180     // has the control been frozen by Freeze()?
 181     bool IsFrozen() const { return m_freezeCount > 0; }
 182
 183 protected:
 184     virtual wxSize DoGetBestSize() const;
 185     virtual void DoApplyWidgetStyle(GtkRcStyle *style);
 186     virtual GdkWindow *GTKGetWindow(wxArrayGdkWindows& windows) const;
 187
 188     // common part of all ctors
 189     void Init();
 190
 191     // Widgets that use the style->base colour for the BG colour should
 192     // override this and return true.
 193     virtual bool UseGTKStyleBase() const { return true; }
 194
 195     virtual void DoSetValue(const wxString &value, int flags = 0);
 196
 197     // wrappers hiding the differences between functions doing the same thing
 198     // for GtkTextView and GtkEntry (all of them use current window style to
 199     // set the given characteristic)
 200     void GTKSetEditable();
 201     void GTKSetVisibility();
 202     void GTKSetWrapMode();
 203     void GTKSetJustification();
 204
 205 private:
 206     // change the font for everything in this control
 207     void ChangeFontGlobally();
 208
 209     // get the encoding which is used in this control: this looks at our font
 210     // and default style but not the current style (i.e. the style for the
 211     // current position); returns wxFONTENCODING_SYSTEM if we have no specific
 212     // encoding
 213     wxFontEncoding GetTextEncoding() const;
 214
 215
 216     GtkWidget  *m_text;
 217
 218     bool        m_modified:1;
 219     bool        m_dontMarkDirty:1;
 220
 221     int         m_countUpdatesToIgnore;
 222
 223     // Our text buffer. Convenient, and holds the buffer while using
 224     // a dummy one when frozen
 225     GtkTextBuffer *m_buffer;
 226
 227     // number of calls to Freeze() minus number of calls to Thaw()
 228     unsigned m_freezeCount;
 229     GtkTextMark* m_showPositionOnThaw;
 230
 231     // For wxTE_AUTO_URL
 232     void OnUrlMouseEvent(wxMouseEvent&);
 233     GdkCursor *m_gdkHandCursor;
 234     GdkCursor *m_gdkXTermCursor;
 235
 236     DECLARE_EVENT_TABLE()
 237     DECLARE_DYNAMIC_CLASS(wxTextCtrl)
 238 };
 239
 240 #endif // _WX_GTK_TEXTCTRL_H_