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 #include "gdk/gdkkeysyms.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // data
  27 //-----------------------------------------------------------------------------
  28
  29 extern bool   g_blockEventsOnDrag;
  30
  31 //-----------------------------------------------------------------------------
  32 //  "changed"
  33 //-----------------------------------------------------------------------------
  34
  35 static void
  36 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  37 {
  38     win->SetModified();
  39
  40     win->CalculateScrollbar();
  41
  42     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
  43     wxString val( win->GetValue() );
  44     if (!val.IsNull()) event.m_commandString = WXSTRINGCAST val;
  45     event.SetEventObject( win );
  46     win->GetEventHandler()->ProcessEvent( event );
  47 }
  48
  49 //-----------------------------------------------------------------------------
  50 // "size_allocate"
  51 //-----------------------------------------------------------------------------
  52
  53 static void
  54 gtk_text_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* WXUNUSED(alloc), wxTextCtrl *win )
  55 {
  56     win->CalculateScrollbar();
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 //  wxTextCtrl
  61 //-----------------------------------------------------------------------------
  62
  63 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  64
  65 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  66     EVT_CHAR(wxTextCtrl::OnChar)
  67 END_EVENT_TABLE()
  68
  69 wxTextCtrl::wxTextCtrl() : streambuf()
  70 {
  71     if (allocate()) setp(base(),ebuf());
  72
  73     m_modified = FALSE;
  74 }
  75
  76 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  77       const wxPoint &pos, const wxSize &size,
  78       int style, const wxValidator& validator, const wxString &name ) : streambuf()
  79 {
  80     if (allocate()) setp(base(),ebuf());
  81
  82     m_modified = FALSE;
  83     Create( parent, id, value, pos, size, style, validator, name );
  84 }
  85
  86 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
  87       const wxPoint &pos, const wxSize &size,
  88       int style, const wxValidator& validator, const wxString &name )
  89 {
  90     m_needParent = TRUE;
  91     m_acceptsFocus = TRUE;
  92
  93     PreCreation( parent, id, pos, size, style, name );
  94
  95     SetValidator( validator );
  96
  97     m_vScrollbarVisible = TRUE;
  98
  99     bool multi_line = (style & wxTE_MULTILINE) != 0;
 100     if ( multi_line )
 101     {
 102         // a multi-line edit control: create a vertical scrollbar by default and
 103         // horizontal if requested
 104         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 105
 106         // create our control...
 107         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 108
 109         // ... and put into the upper left hand corner of the table
 110         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 111         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 112                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 113                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 114                        0, 0);
 115
 116         // put the horizontal scrollbar in the lower left hand corner
 117         if (bHasHScrollbar)
 118         {
 119             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 120             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 121                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
 122                        GTK_FILL,
 123                        0, 0);
 124             gtk_widget_show(hscrollbar);
 125         }
 126
 127         // finally, put the vertical scrollbar in the upper right corner
 128         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 129         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 130                      GTK_FILL,
 131                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 132                      0, 0);
 133         gtk_widget_show( m_vScrollbar );
 134
 135         gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 136           GTK_SIGNAL_FUNC(gtk_text_size_callback), (gpointer)this );
 137     }
 138     else
 139     {
 140         // a single-line text control: no need for scrollbars
 141         m_widget =
 142           m_text = gtk_entry_new();
 143     }
 144
 145     wxSize newSize = size;
 146     if (newSize.x == -1) newSize.x = 80;
 147     if (newSize.y == -1) newSize.y = 26;
 148     SetSize( newSize.x, newSize.y );
 149
 150     m_parent->AddChild( this );
 151
 152     (m_parent->m_insertCallback)( m_parent, this );
 153
 154     PostCreation();
 155
 156     if (multi_line)
 157     {
 158         gtk_widget_realize(m_text);
 159         gtk_widget_show(m_text);
 160     }
 161
 162     // we want to be notified about text changes
 163     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 164       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 165
 166     if (!value.IsNull())
 167     {
 168         gint tmp = 0;
 169         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 170         SetInsertionPointEnd();
 171     }
 172
 173     if (style & wxTE_PASSWORD)
 174     {
 175         if (!multi_line)
 176             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 177     }
 178
 179     if (style & wxTE_READONLY)
 180     {
 181         if (!multi_line)
 182             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 183     }
 184     else
 185     {
 186         if (multi_line)
 187             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 188     }
 189
 190     Show( TRUE );
 191
 192     SetBackgroundColour( parent->GetBackgroundColour() );
 193     SetForegroundColour( parent->GetForegroundColour() );
 194
 195     return TRUE;
 196 }
 197
 198 void wxTextCtrl::CalculateScrollbar()
 199 {
 200     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 201
 202     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 203
 204     if (adj->upper - adj->page_size < 0.8)
 205     {
 206         if (m_vScrollbarVisible)
 207         {
 208             gtk_widget_hide( m_vScrollbar );
 209
 210             m_vScrollbarVisible = FALSE;
 211         }
 212     }
 213     else
 214     {
 215         if (!m_vScrollbarVisible)
 216         {
 217             gtk_widget_show( m_vScrollbar );
 218
 219             m_vScrollbarVisible = TRUE;
 220         }
 221     }
 222 }
 223
 224 wxString wxTextCtrl::GetValue() const
 225 {
 226     wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
 227
 228     wxString tmp;
 229     if (m_windowStyle & wxTE_MULTILINE)
 230     {
 231         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 232         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 233         tmp = text;
 234         g_free( text );
 235     }
 236     else
 237     {
 238         tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 239     }
 240     return tmp;
 241 }
 242
 243 void wxTextCtrl::SetValue( const wxString &value )
 244 {
 245     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 246
 247     wxString tmp = "";
 248     if (!value.IsNull()) tmp = value;
 249     if (m_windowStyle & wxTE_MULTILINE)
 250     {
 251         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 252         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 253         len = 0;
 254         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 255     }
 256     else
 257     {
 258         gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 259     }
 260 }
 261
 262 void wxTextCtrl::WriteText( const wxString &text )
 263 {
 264     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 265
 266     if (text.IsNull()) return;
 267
 268     if (m_windowStyle & wxTE_MULTILINE)
 269     {
 270         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 271         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 272     }
 273     else
 274     {
 275         gtk_entry_append_text( GTK_ENTRY(m_text), text );
 276     }
 277 }
 278
 279 bool wxTextCtrl::LoadFile( const wxString &file )
 280 {
 281   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 282
 283   if (!wxFileExists(file)) return FALSE;
 284
 285   Clear();
 286
 287   FILE *fp = NULL;
 288   struct stat statb;
 289
 290   if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 291       !(fp = fopen ((char*) (const char*) file, "r")))
 292   {
 293       return FALSE;
 294   }
 295   else
 296   {
 297     gint len = statb.st_size;
 298     char *text;
 299     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 300     {
 301       fclose (fp);
 302       return FALSE;
 303     }
 304     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 305         {
 306         }
 307     fclose (fp);
 308
 309     text[len] = 0;
 310
 311     if (m_windowStyle & wxTE_MULTILINE)
 312     {
 313       gint pos = 0;
 314       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 315     }
 316     else
 317     {
 318       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 319     }
 320
 321     free (text);
 322     m_modified = FALSE;
 323     return TRUE;
 324   }
 325   return FALSE;
 326 }
 327
 328 bool wxTextCtrl::SaveFile( const wxString &file )
 329 {
 330   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 331
 332   if (file == "") return FALSE;
 333
 334   FILE *fp;
 335
 336   if (!(fp = fopen ((char*) (const char*) file, "w")))
 337     {
 338       return FALSE;
 339     }
 340   else
 341     {
 342       char *text = NULL;
 343       gint len = 0;
 344
 345       if (m_windowStyle & wxTE_MULTILINE)
 346       {
 347         len = gtk_text_get_length( GTK_TEXT(m_text) );
 348         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 349       }
 350       else
 351       {
 352         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 353       }
 354
 355       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 356         {
 357           // Did not write whole file
 358         }
 359
 360       // Make sure newline terminates the file
 361       if (text[len - 1] != '\n')
 362         fputc ('\n', fp);
 363
 364       fclose (fp);
 365
 366       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 367
 368       m_modified = FALSE;
 369       return TRUE;
 370     }
 371
 372   return TRUE;
 373 }
 374
 375 wxString wxTextCtrl::GetLineText( long lineNo ) const
 376 {
 377   if (m_windowStyle & wxTE_MULTILINE)
 378   {
 379     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 380     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 381
 382     if (text)
 383     {
 384         wxString buf("");
 385         long i;
 386         int currentLine = 0;
 387         for (i = 0; currentLine != lineNo && text[i]; i++ )
 388           if (text[i] == '\n')
 389             currentLine++;
 390         // Now get the text
 391         int j;
 392         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 393             buf += text[i];
 394
 395         g_free( text );
 396         return buf;
 397     }
 398     else
 399       return wxEmptyString;
 400   }
 401   else
 402   {
 403     if (lineNo == 0) return GetValue();
 404     return wxEmptyString;
 405   }
 406 }
 407
 408 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 409 {
 410     wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
 411 }
 412
 413 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 414 {
 415   if (!(m_windowStyle & wxTE_MULTILINE))
 416     return 0;
 417   gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 418   char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 419   if(!text)
 420     return 0;
 421   if( pos >= len)
 422     return pos=len-1;
 423
 424   *x=1;   // Col 1
 425   *y=1;   // Line 1
 426   for (int i = 0; i < pos; i++ )
 427     {
 428       if (text[i] == '\n')
 429         {
 430           (*y)++;
 431           *x=1;
 432         }
 433       else
 434         (*x)++;
 435     }
 436   g_free( text );
 437   return 1;
 438 }
 439
 440 long wxTextCtrl::XYToPosition(long x, long y ) const
 441 {
 442     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 443
 444     long pos=0;
 445
 446     for( int i=1; i<y; i++ ) pos += GetLineLength(i);
 447
 448     pos +=x-1; // Pos start with 0
 449     return pos;
 450 }
 451
 452 int wxTextCtrl::GetLineLength(long lineNo) const
 453 {
 454     wxString str = GetLineText (lineNo);
 455     return (int) str.Length();
 456 }
 457
 458 int wxTextCtrl::GetNumberOfLines() const
 459 {
 460     if (m_windowStyle & wxTE_MULTILINE)
 461     {
 462         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 463         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 464
 465         if (text)
 466         {
 467             int currentLine = 0;
 468             for (int i = 0; i < len; i++ )
 469             {
 470                 if (text[i] == '\n')
 471                   currentLine++;
 472             }
 473             g_free( text );
 474             return currentLine;
 475         }
 476         else
 477         {
 478             return 0;
 479         }
 480     }
 481     else
 482     {
 483        return 1;
 484     }
 485 }
 486
 487 void wxTextCtrl::SetInsertionPoint( long pos )
 488 {
 489     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 490
 491     int tmp = (int) pos;
 492     if (m_windowStyle & wxTE_MULTILINE)
 493         gtk_text_set_point( GTK_TEXT(m_text), tmp );
 494     else
 495         gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 496 }
 497
 498 void wxTextCtrl::SetInsertionPointEnd()
 499 {
 500     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 501
 502     int pos = 0;
 503     if (m_windowStyle & wxTE_MULTILINE)
 504         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 505     else
 506       pos = GTK_ENTRY(m_text)->text_length;
 507
 508     SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 509 }
 510
 511 void wxTextCtrl::SetEditable( bool editable )
 512 {
 513     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 514
 515     if (m_windowStyle & wxTE_MULTILINE)
 516         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 517     else
 518         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 519 }
 520
 521 void wxTextCtrl::SetSelection( long from, long to )
 522 {
 523     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 524
 525     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 526 }
 527
 528 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 529 {
 530     wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 531 }
 532
 533 long wxTextCtrl::GetInsertionPoint() const
 534 {
 535     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 536
 537     return (long) GTK_EDITABLE(m_text)->current_pos;
 538 }
 539
 540 long wxTextCtrl::GetLastPosition() const
 541 {
 542     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 543
 544     int pos = 0;
 545     if (m_windowStyle & wxTE_MULTILINE)
 546         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 547     else
 548         pos = GTK_ENTRY(m_text)->text_length;
 549
 550     return (long)pos-1;
 551 }
 552
 553 void wxTextCtrl::Remove( long from, long to )
 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 }
 559
 560 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 561 {
 562     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 563
 564     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 565     if (value.IsNull()) return;
 566     gint pos = (gint)from;
 567     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 568 }
 569
 570 void wxTextCtrl::Cut()
 571 {
 572     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 573
 574 #if (GTK_MINOR_VERSION == 1)
 575     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 576 #else
 577     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 578 #endif
 579 }
 580
 581 void wxTextCtrl::Copy()
 582 {
 583     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 584
 585 #if (GTK_MINOR_VERSION == 1)
 586     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 587 #else
 588     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 589 #endif
 590 }
 591
 592 void wxTextCtrl::Paste()
 593 {
 594     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 595
 596 #if (GTK_MINOR_VERSION == 1)
 597     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 598 #else
 599     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 600 #endif
 601 }
 602
 603 void wxTextCtrl::Clear()
 604 {
 605     SetValue( "" );
 606 }
 607
 608 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 609 {
 610     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 611
 612     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 613     {
 614         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 615         event.SetEventObject(this);
 616         if (GetEventHandler()->ProcessEvent(event)) return;
 617     }
 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