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       gint pos = 0;
 307       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 308     }
 309     else
 310     {
 311       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 312     }
 313
 314     free (text);
 315     m_modified = FALSE;
 316     return TRUE;
 317   }
 318   return FALSE;
 319 }
 320
 321 bool wxTextCtrl::SaveFile( const wxString &file )
 322 {
 323   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 324
 325   if (file == "") return FALSE;
 326
 327   FILE *fp;
 328
 329   if (!(fp = fopen ((char*) (const char*) file, "w")))
 330     {
 331       return FALSE;
 332     }
 333   else
 334     {
 335       char *text = NULL;
 336       gint len = 0;
 337
 338       if (m_windowStyle & wxTE_MULTILINE)
 339       {
 340         len = gtk_text_get_length( GTK_TEXT(m_text) );
 341         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 342       }
 343       else
 344       {
 345         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 346       }
 347
 348       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 349         {
 350           // Did not write whole file
 351         }
 352
 353       // Make sure newline terminates the file
 354       if (text[len - 1] != '\n')
 355         fputc ('\n', fp);
 356
 357       fclose (fp);
 358
 359       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 360
 361       m_modified = FALSE;
 362       return TRUE;
 363     }
 364
 365   return TRUE;
 366 }
 367
 368 wxString wxTextCtrl::GetLineText( long lineNo ) const
 369 {
 370   if (m_windowStyle & wxTE_MULTILINE)
 371   {
 372     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 373     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 374
 375     if (text)
 376     {
 377         wxString buf("");
 378         long i;
 379         int currentLine = 0;
 380         for (i = 0; currentLine != lineNo && text[i]; i++ )
 381           if (text[i] == '\n')
 382             currentLine++;
 383         // Now get the text
 384         int j;
 385         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 386             buf += text[i];
 387
 388         g_free( text );
 389         return buf;
 390     }
 391     else
 392       return wxEmptyString;
 393   }
 394   else
 395   {
 396     if (lineNo == 0) return GetValue();
 397     return wxEmptyString;
 398   }
 399 }
 400
 401 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 402 {
 403     wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
 404 }
 405
 406 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 407 {
 408   if (!(m_windowStyle & wxTE_MULTILINE))
 409     return 0;
 410   gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 411   char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 412   if(!text)
 413     return 0;
 414   if( pos >= len)
 415     return pos=len-1;
 416
 417   *x=1;   // Col 1
 418   *y=1;   // Line 1
 419   for (int i = 0; i < pos; i++ )
 420     {
 421       if (text[i] == '\n')
 422         {
 423           (*y)++;
 424           *x=1;
 425         }
 426       else
 427         (*x)++;
 428     }
 429   g_free( text );
 430   return 1;
 431 }
 432
 433 long wxTextCtrl::XYToPosition(long x, long y ) const
 434 {
 435     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 436
 437     long pos=0;
 438
 439     for( int i=1; i<y; i++ ) pos += GetLineLength(i);
 440
 441     pos +=x-1; // Pos start with 0
 442     return pos;
 443 }
 444
 445 int wxTextCtrl::GetLineLength(long lineNo) const
 446 {
 447     wxString str = GetLineText (lineNo);
 448     return (int) str.Length();
 449 }
 450
 451 int wxTextCtrl::GetNumberOfLines() const
 452 {
 453     if (m_windowStyle & wxTE_MULTILINE)
 454     {
 455         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 456         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 457
 458         if (text)
 459         {
 460             int currentLine = 0;
 461             for (int i = 0; i < len; i++ )
 462             {
 463                 if (text[i] == '\n')
 464                   currentLine++;
 465             }
 466             g_free( text );
 467             return currentLine;
 468         }
 469         else
 470         {
 471             return 0;
 472         }
 473     }
 474     else
 475     {
 476        return 1;
 477     }
 478 }
 479
 480 void wxTextCtrl::SetInsertionPoint( long pos )
 481 {
 482     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 483
 484     int tmp = (int) pos;
 485     if (m_windowStyle & wxTE_MULTILINE)
 486         gtk_text_set_point( GTK_TEXT(m_text), tmp );
 487     else
 488         gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 489 }
 490
 491 void wxTextCtrl::SetInsertionPointEnd()
 492 {
 493     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 494
 495     int pos = 0;
 496     if (m_windowStyle & wxTE_MULTILINE)
 497         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 498     else
 499       pos = GTK_ENTRY(m_text)->text_length;
 500
 501     SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 502 }
 503
 504 void wxTextCtrl::SetEditable( bool editable )
 505 {
 506     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 507
 508     if (m_windowStyle & wxTE_MULTILINE)
 509         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 510     else
 511         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 512 }
 513
 514 void wxTextCtrl::SetSelection( long from, long to )
 515 {
 516     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 517
 518     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 519 }
 520
 521 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 522 {
 523     wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 524 }
 525
 526 long wxTextCtrl::GetInsertionPoint() const
 527 {
 528     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 529
 530     return (long) GTK_EDITABLE(m_text)->current_pos;
 531 }
 532
 533 long wxTextCtrl::GetLastPosition() const
 534 {
 535     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 536
 537     int pos = 0;
 538     if (m_windowStyle & wxTE_MULTILINE)
 539         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 540     else
 541         pos = GTK_ENTRY(m_text)->text_length;
 542
 543     return (long)pos-1;
 544 }
 545
 546 void wxTextCtrl::Remove( long from, long to )
 547 {
 548     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 549
 550     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 551 }
 552
 553 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 554 {
 555     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 556
 557     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 558     if (value.IsNull()) return;
 559     gint pos = (gint)from;
 560     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 561 }
 562
 563 void wxTextCtrl::Cut()
 564 {
 565     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 566
 567 #if (GTK_MINOR_VERSION == 1)
 568     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 569 #else
 570     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 571 #endif
 572 }
 573
 574 void wxTextCtrl::Copy()
 575 {
 576     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 577
 578 #if (GTK_MINOR_VERSION == 1)
 579     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 580 #else
 581     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 582 #endif
 583 }
 584
 585 void wxTextCtrl::Paste()
 586 {
 587     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 588
 589 #if (GTK_MINOR_VERSION == 1)
 590     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 591 #else
 592     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 593 #endif
 594 }
 595
 596 void wxTextCtrl::Clear()
 597 {
 598     SetValue( "" );
 599 }
 600
 601 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 602 {
 603     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 604
 605     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 606     {
 607         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 608         event.SetEventObject(this);
 609         if (GetEventHandler()->ProcessEvent(event)) return;
 610     }
 611     else if (key_event.KeyCode() == WXK_TAB)
 612     {
 613         wxNavigationKeyEvent event;
 614         event.SetDirection( key_event.m_shiftDown );
 615         event.SetWindowChange(FALSE);
 616         event.SetEventObject(this);
 617
 618         if (GetEventHandler()->ProcessEvent(event)) return;
 619     }
 620     key_event.Skip();
 621 }
 622
 623 int wxTextCtrl::overflow( int WXUNUSED(c) )
 624 {
 625     int len = pptr() - pbase();
 626     char *txt = new char[len+1];
 627     strncpy(txt, pbase(), len);
 628     txt[len] = '\0';
 629     (*this) << txt;
 630     setp(pbase(), epptr());
 631     delete[] txt;
 632     return EOF;
 633 }
 634
 635 int wxTextCtrl::sync()
 636 {
 637     int len = pptr() - pbase();
 638     char *txt = new char[len+1];
 639     strncpy(txt, pbase(), len);
 640     txt[len] = '\0';
 641     (*this) << txt;
 642     setp(pbase(), epptr());
 643     delete[] txt;
 644     return 0;
 645 }
 646
 647 int wxTextCtrl::underflow()
 648 {
 649     return EOF;
 650 }
 651
 652 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 653 {
 654     WriteText(s);
 655     return *this;
 656 }
 657
 658 wxTextCtrl& wxTextCtrl::operator<<(float f)
 659 {
 660     static char buf[100];
 661     sprintf(buf, "%.2f", f);
 662     WriteText(buf);
 663     return *this;
 664 }
 665
 666 wxTextCtrl& wxTextCtrl::operator<<(double d)
 667 {
 668     static char buf[100];
 669     sprintf(buf, "%.2f", d);
 670     WriteText(buf);
 671     return *this;
 672 }
 673
 674 wxTextCtrl& wxTextCtrl::operator<<(int i)
 675 {
 676     static char buf[100];
 677     sprintf(buf, "%i", i);
 678     WriteText(buf);
 679     return *this;
 680 }
 681
 682 wxTextCtrl& wxTextCtrl::operator<<(long i)
 683 {
 684     static char buf[100];
 685     sprintf(buf, "%ld", i);
 686     WriteText(buf);
 687     return *this;
 688 }
 689
 690 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 691 {
 692     char buf[2];
 693
 694     buf[0] = c;
 695     buf[1] = 0;
 696     WriteText(buf);
 697     return *this;
 698 }
 699
 700 GtkWidget* wxTextCtrl::GetConnectWidget()
 701 {
 702     return GTK_WIDGET(m_text);
 703 }
 704
 705 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 706 {
 707     if (m_windowStyle & wxTE_MULTILINE)
 708         return (window == GTK_TEXT(m_text)->text_area);
 709     else
 710         return (window == GTK_ENTRY(m_text)->text_area);
 711 }
 712
 713 void wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
 714 {
 715     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 716
 717     // doesn't work
 718 }
 719
 720 void wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 721 {
 722     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 723
 724     // doesn't work
 725 }
 726
 727 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 728 {
 729     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 730
 731     wxControl::SetBackgroundColour( colour );
 732
 733     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 734     if (sysbg.Red() == colour.Red() &&
 735         sysbg.Green() == colour.Green() &&
 736         sysbg.Blue() == colour.Blue())
 737     {
 738         return;
 739     }
 740
 741     if (!m_backgroundColour.Ok()) return;
 742
 743     if (m_windowStyle & wxTE_MULTILINE)
 744     {
 745         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 746         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 747         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 748         gdk_window_clear( window );
 749     }
 750 }
 751
 752 void wxTextCtrl::ApplyWidgetStyle()
 753 {
 754     if (m_windowStyle & wxTE_MULTILINE)
 755     {
 756         // how ?
 757     }
 758     else
 759     {
 760         SetWidgetStyle();
 761         gtk_widget_set_style( m_text, m_widgetStyle );
 762     }
 763 }
 764