src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/settings.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <ctype.h>
  22
  23 //-----------------------------------------------------------------------------
  24 //  "changed"
  25 //-----------------------------------------------------------------------------
  26
  27 static void
  28 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  29 {
  30     win->SetModified();
  31
  32     win->CalculateScrollbar();
  33
  34     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
  35     wxString val( win->GetValue() );
  36     if (!val.IsNull()) event.m_commandString = WXSTRINGCAST val;
  37     event.SetEventObject( win );
  38     win->GetEventHandler()->ProcessEvent( event );
  39 }
  40
  41 //-----------------------------------------------------------------------------
  42 // "size_allocate"
  43 //-----------------------------------------------------------------------------
  44
  45 static void
  46 gtk_text_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* WXUNUSED(alloc), wxTextCtrl *win )
  47 {
  48     win->CalculateScrollbar();
  49 }
  50
  51
  52 //-----------------------------------------------------------------------------
  53 //  wxTextCtrl
  54 //-----------------------------------------------------------------------------
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  57
  58 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  59     EVT_CHAR(wxTextCtrl::OnChar)
  60 END_EVENT_TABLE()
  61
  62 wxTextCtrl::wxTextCtrl() : streambuf()
  63 {
  64     if (allocate()) setp(base(),ebuf());
  65
  66     m_modified = FALSE;
  67 }
  68
  69 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  70       const wxPoint &pos, const wxSize &size,
  71       int style, const wxValidator& validator, const wxString &name ) : streambuf()
  72 {
  73     if (allocate()) setp(base(),ebuf());
  74
  75     m_modified = FALSE;
  76     Create( parent, id, value, pos, size, style, validator, name );
  77 }
  78
  79 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
  80       const wxPoint &pos, const wxSize &size,
  81       int style, const wxValidator& validator, const wxString &name )
  82 {
  83     m_needParent = TRUE;
  84
  85     PreCreation( parent, id, pos, size, style, name );
  86
  87     SetValidator( validator );
  88
  89     m_vScrollbarVisible = TRUE;
  90
  91     bool multi_line = (style & wxTE_MULTILINE) != 0;
  92     if ( multi_line )
  93     {
  94         // a multi-line edit control: create a vertical scrollbar by default and
  95         // horizontal if requested
  96         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
  97
  98         // create our control...
  99         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 100
 101         // ... and put into the upper left hand corner of the table
 102         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 103         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 104                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 105                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 106                        0, 0);
 107
 108         // put the horizontal scrollbar in the lower left hand corner
 109         if (bHasHScrollbar)
 110         {
 111             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 112             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 113                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
 114                        GTK_FILL,
 115                        0, 0);
 116             gtk_widget_show(hscrollbar);
 117         }
 118
 119         // finally, put the vertical scrollbar in the upper right corner
 120         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 121         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 122                      GTK_FILL,
 123                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 124                      0, 0);
 125         gtk_widget_show( m_vScrollbar );
 126
 127         gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 128           GTK_SIGNAL_FUNC(gtk_text_size_callback), (gpointer)this );
 129     }
 130     else
 131     {
 132         // a single-line text control: no need for scrollbars
 133         m_widget =
 134           m_text = gtk_entry_new();
 135     }
 136
 137     wxSize newSize = size;
 138     if (newSize.x == -1) newSize.x = 80;
 139     if (newSize.y == -1) newSize.y = 26;
 140     SetSize( newSize.x, newSize.y );
 141
 142     m_parent->AddChild( this );
 143
 144     (m_parent->m_insertCallback)( m_parent, this );
 145
 146     PostCreation();
 147
 148     if (multi_line)
 149     {
 150         gtk_widget_realize(m_text);
 151         gtk_widget_show(m_text);
 152     }
 153
 154     // we want to be notified about text changes
 155     gtk_signal_connect(GTK_OBJECT(m_text), "changed",
 156                      GTK_SIGNAL_FUNC(gtk_text_changed_callback),
 157                      (gpointer)this);
 158
 159     if (!value.IsNull())
 160     {
 161         gint tmp = 0;
 162         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 163         SetInsertionPointEnd();
 164     }
 165
 166     if (style & wxTE_PASSWORD)
 167     {
 168         if (!multi_line)
 169             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 170     }
 171
 172     if (style & wxTE_READONLY)
 173     {
 174         if (!multi_line)
 175             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 176     }
 177     else
 178     {
 179         if (multi_line)
 180             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 181     }
 182
 183     Show( TRUE );
 184
 185     SetBackgroundColour( parent->GetBackgroundColour() );
 186     SetForegroundColour( parent->GetForegroundColour() );
 187
 188     return TRUE;
 189 }
 190
 191 void wxTextCtrl::CalculateScrollbar()
 192 {
 193     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 194
 195     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 196
 197     if (adj->upper - adj->page_size < 0.8)
 198     {
 199         if (m_vScrollbarVisible)
 200         {
 201             gtk_widget_hide( m_vScrollbar );
 202
 203             m_vScrollbarVisible = FALSE;
 204         }
 205     }
 206     else
 207     {
 208         if (!m_vScrollbarVisible)
 209         {
 210             gtk_widget_show( m_vScrollbar );
 211
 212             m_vScrollbarVisible = TRUE;
 213         }
 214     }
 215 }
 216
 217 wxString wxTextCtrl::GetValue() const
 218 {
 219     wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
 220
 221     wxString tmp;
 222     if (m_windowStyle & wxTE_MULTILINE)
 223     {
 224         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 225         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 226         tmp = text;
 227         g_free( text );
 228     }
 229     else
 230     {
 231         tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 232     }
 233     return tmp;
 234 }
 235
 236 void wxTextCtrl::SetValue( const wxString &value )
 237 {
 238     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 239
 240     wxString tmp = "";
 241     if (!value.IsNull()) tmp = value;
 242     if (m_windowStyle & wxTE_MULTILINE)
 243     {
 244         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 245         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 246         len = 0;
 247         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 248     }
 249     else
 250     {
 251         gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 252     }
 253 }
 254
 255 void wxTextCtrl::WriteText( const wxString &text )
 256 {
 257     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 258
 259     if (text.IsNull()) return;
 260
 261     if (m_windowStyle & wxTE_MULTILINE)
 262     {
 263         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 264         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 265     }
 266     else
 267     {
 268         gtk_entry_append_text( GTK_ENTRY(m_text), text );
 269     }
 270 }
 271
 272 bool wxTextCtrl::LoadFile( const wxString &file )
 273 {
 274   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 275
 276   if (!wxFileExists(file)) return FALSE;
 277
 278   Clear();
 279
 280   FILE *fp = NULL;
 281   struct stat statb;
 282
 283   if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 284       !(fp = fopen ((char*) (const char*) file, "r")))
 285   {
 286       return FALSE;
 287   }
 288   else
 289   {
 290     gint len = statb.st_size;
 291     char *text;
 292     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 293     {
 294       fclose (fp);
 295       return FALSE;
 296     }
 297     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 298         {
 299         }
 300     fclose (fp);
 301
 302     text[len] = 0;
 303
 304     if (m_windowStyle & wxTE_MULTILINE)
 305     {
 306       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, 0, &len );
 307     }
 308     else
 309     {
 310       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 311     }
 312
 313     free (text);
 314     m_modified = FALSE;
 315     return TRUE;
 316   }
 317   return FALSE;
 318 }
 319
 320 bool wxTextCtrl::SaveFile( const wxString &file )
 321 {
 322   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 323
 324   if (file == "") return FALSE;
 325
 326   FILE *fp;
 327
 328   if (!(fp = fopen ((char*) (const char*) file, "w")))
 329     {
 330       return FALSE;
 331     }
 332   else
 333     {
 334       char *text = NULL;
 335       gint len = 0;
 336
 337       if (m_windowStyle & wxTE_MULTILINE)
 338       {
 339         len = gtk_text_get_length( GTK_TEXT(m_text) );
 340         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 341       }
 342       else
 343       {
 344         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 345       }
 346
 347       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 348         {
 349           // Did not write whole file
 350         }
 351
 352       // Make sure newline terminates the file
 353       if (text[len - 1] != '\n')
 354         fputc ('\n', fp);
 355
 356       fclose (fp);
 357
 358       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 359
 360       m_modified = FALSE;
 361       return TRUE;
 362     }
 363
 364   return TRUE;
 365 }
 366
 367 wxString wxTextCtrl::GetLineText( long lineNo ) const
 368 {
 369   if (m_windowStyle & wxTE_MULTILINE)
 370   {
 371     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 372     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 373
 374     if (text)
 375     {
 376         wxString buf("");
 377         long i;
 378         int currentLine = 0;
 379         for (i = 0; currentLine != lineNo && text[i]; i++ )
 380           if (text[i] == '\n')
 381             currentLine++;
 382         // Now get the text
 383         int j;
 384         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 385             buf += text[i];
 386
 387         g_free( text );
 388         return buf;
 389     }
 390     else
 391       return wxEmptyString;
 392   }
 393   else
 394   {
 395     if (lineNo == 0) return GetValue();
 396     return wxEmptyString;
 397   }
 398 }
 399
 400 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 401 {
 402     wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
 403 }
 404
 405 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 406 {
 407   if (!(m_windowStyle & wxTE_MULTILINE))
 408     return 0;
 409   gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 410   char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 411   if(!text)
 412     return 0;
 413   if( pos >= len)
 414     return pos=len-1;
 415
 416   *x=1;   // Col 1
 417   *y=1;   // Line 1
 418   for (int i = 0; i < pos; i++ )
 419     {
 420       if (text[i] == '\n')
 421         {
 422           (*y)++;
 423           *x=1;
 424         }
 425       else
 426         (*x)++;
 427     }
 428   g_free( text );
 429   return 1;
 430 }
 431
 432 long wxTextCtrl::XYToPosition(long x, long y ) const
 433 {
 434     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 435
 436     long pos=0;
 437
 438     for( int i=1; i<y; i++ ) pos += GetLineLength(i);
 439
 440     pos +=x-1; // Pos start with 0
 441     return pos;
 442 }
 443
 444 int wxTextCtrl::GetLineLength(long lineNo) const
 445 {
 446     wxString str = GetLineText (lineNo);
 447     return (int) str.Length();
 448 }
 449
 450 int wxTextCtrl::GetNumberOfLines() const
 451 {
 452     if (m_windowStyle & wxTE_MULTILINE)
 453     {
 454         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 455         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 456
 457         if (text)
 458         {
 459             int currentLine = 0;
 460             for (int i = 0; i < len; i++ )
 461             {
 462                 if (text[i] == '\n')
 463                   currentLine++;
 464             }
 465             g_free( text );
 466             return currentLine;
 467         }
 468         else
 469         {
 470             return 0;
 471         }
 472     }
 473     else
 474     {
 475        return 1;
 476     }
 477 }
 478
 479 void wxTextCtrl::SetInsertionPoint( long pos )
 480 {
 481     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 482
 483     int tmp = (int) pos;
 484     if (m_windowStyle & wxTE_MULTILINE)
 485         gtk_text_set_point( GTK_TEXT(m_text), tmp );
 486     else
 487         gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 488 }
 489
 490 void wxTextCtrl::SetInsertionPointEnd()
 491 {
 492     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 493
 494     int pos = 0;
 495     if (m_windowStyle & wxTE_MULTILINE)
 496         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 497     else
 498       pos = GTK_ENTRY(m_text)->text_length;
 499
 500     SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 501 }
 502
 503 void wxTextCtrl::SetEditable( bool editable )
 504 {
 505     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 506
 507     if (m_windowStyle & wxTE_MULTILINE)
 508         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 509     else
 510         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 511 }
 512
 513 void wxTextCtrl::SetSelection( long from, long to )
 514 {
 515     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 516
 517     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 518 }
 519
 520 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 521 {
 522     wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 523 }
 524
 525 long wxTextCtrl::GetInsertionPoint() const
 526 {
 527     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 528
 529     return (long) GTK_EDITABLE(m_text)->current_pos;
 530 }
 531
 532 long wxTextCtrl::GetLastPosition() const
 533 {
 534     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 535
 536     int pos = 0;
 537     if (m_windowStyle & wxTE_MULTILINE)
 538         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 539     else
 540         pos = GTK_ENTRY(m_text)->text_length;
 541
 542     return (long)pos-1;
 543 }
 544
 545 void wxTextCtrl::Remove( long from, long to )
 546 {
 547     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 548
 549     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 550 }
 551
 552 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 553 {
 554     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 555
 556     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 557     if (value.IsNull()) return;
 558     gint pos = (gint)to;
 559     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 560 }
 561
 562 void wxTextCtrl::Cut()
 563 {
 564     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 565
 566 #if (GTK_MINOR_VERSION == 1)
 567     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 568 #else
 569     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 570 #endif
 571 }
 572
 573 void wxTextCtrl::Copy()
 574 {
 575     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 576
 577 #if (GTK_MINOR_VERSION == 1)
 578     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 579 #else
 580     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 581 #endif
 582 }
 583
 584 void wxTextCtrl::Paste()
 585 {
 586     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 587
 588 #if (GTK_MINOR_VERSION == 1)
 589     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 590 #else
 591     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 592 #endif
 593 }
 594
 595 void wxTextCtrl::Clear()
 596 {
 597     SetValue( "" );
 598 }
 599
 600 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 601 {
 602     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 603
 604     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 605     {
 606         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 607         event.SetEventObject(this);
 608         if (GetEventHandler()->ProcessEvent(event)) return;
 609     }
 610     else if (key_event.KeyCode() == WXK_TAB)
 611     {
 612         wxNavigationKeyEvent event;
 613         event.SetDirection( key_event.m_shiftDown );
 614         event.SetWindowChange(FALSE);
 615         event.SetEventObject(this);
 616
 617         if (GetEventHandler()->ProcessEvent(event)) return;
 618     }
 619     key_event.Skip();
 620 }
 621
 622 int wxTextCtrl::overflow( int WXUNUSED(c) )
 623 {
 624     int len = pptr() - pbase();
 625     char *txt = new char[len+1];
 626     strncpy(txt, pbase(), len);
 627     txt[len] = '\0';
 628     (*this) << txt;
 629     setp(pbase(), epptr());
 630     delete[] txt;
 631     return EOF;
 632 }
 633
 634 int wxTextCtrl::sync()
 635 {
 636     int len = pptr() - pbase();
 637     char *txt = new char[len+1];
 638     strncpy(txt, pbase(), len);
 639     txt[len] = '\0';
 640     (*this) << txt;
 641     setp(pbase(), epptr());
 642     delete[] txt;
 643     return 0;
 644 }
 645
 646 int wxTextCtrl::underflow()
 647 {
 648     return EOF;
 649 }
 650
 651 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 652 {
 653     WriteText(s);
 654     return *this;
 655 }
 656
 657 wxTextCtrl& wxTextCtrl::operator<<(float f)
 658 {
 659     static char buf[100];
 660     sprintf(buf, "%.2f", f);
 661     WriteText(buf);
 662     return *this;
 663 }
 664
 665 wxTextCtrl& wxTextCtrl::operator<<(double d)
 666 {
 667     static char buf[100];
 668     sprintf(buf, "%.2f", d);
 669     WriteText(buf);
 670     return *this;
 671 }
 672
 673 wxTextCtrl& wxTextCtrl::operator<<(int i)
 674 {
 675     static char buf[100];
 676     sprintf(buf, "%i", i);
 677     WriteText(buf);
 678     return *this;
 679 }
 680
 681 wxTextCtrl& wxTextCtrl::operator<<(long i)
 682 {
 683     static char buf[100];
 684     sprintf(buf, "%ld", i);
 685     WriteText(buf);
 686     return *this;
 687 }
 688
 689 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 690 {
 691     char buf[2];
 692
 693     buf[0] = c;
 694     buf[1] = 0;
 695     WriteText(buf);
 696     return *this;
 697 }
 698
 699 GtkWidget* wxTextCtrl::GetConnectWidget()
 700 {
 701     return GTK_WIDGET(m_text);
 702 }
 703
 704 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 705 {
 706     if (m_windowStyle & wxTE_MULTILINE)
 707         return (window == GTK_TEXT(m_text)->text_area);
 708     else
 709         return (window == GTK_ENTRY(m_text)->text_area);
 710 }
 711
 712 void wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
 713 {
 714     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 715
 716     // doesn't work
 717 }
 718
 719 void wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 720 {
 721     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 722
 723     // doesn't work
 724 }
 725
 726 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 727 {
 728     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 729
 730     wxControl::SetBackgroundColour( colour );
 731
 732     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 733     if (sysbg.Red() == colour.Red() &&
 734         sysbg.Green() == colour.Green() &&
 735         sysbg.Blue() == colour.Blue())
 736     {
 737         return;
 738     }
 739
 740     if (!m_backgroundColour.Ok()) return;
 741
 742     if (m_windowStyle & wxTE_MULTILINE)
 743     {
 744         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 745         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 746         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 747         gdk_window_clear( window );
 748     }
 749 }
 750
 751 void wxTextCtrl::ApplyWidgetStyle()
 752 {
 753     if (m_windowStyle & wxTE_MULTILINE)
 754     {
 755         // how ?
 756     }
 757     else
 758     {
 759         SetWidgetStyle();
 760         gtk_widget_set_style( m_text, m_widgetStyle );
 761     }
 762 }
 763