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/log.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23 #include <ctype.h>
  24 #include <math.h>               // for fabs
  25
  26 #include "gdk/gdk.h"
  27 #include "gtk/gtk.h"
  28 #include "gdk/gdkkeysyms.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // idle system
  32 //-----------------------------------------------------------------------------
  33
  34 extern void wxapp_install_idle_handler();
  35 extern bool g_isIdle;
  36
  37 //-----------------------------------------------------------------------------
  38 // data
  39 //-----------------------------------------------------------------------------
  40
  41 extern bool       g_blockEventsOnDrag;
  42 extern wxCursor   g_globalCursor;
  43
  44 // ----------------------------------------------------------------------------
  45 // "insert_text" for GtkEntry
  46 // ----------------------------------------------------------------------------
  47
  48 static void
  49 gtk_insert_text_callback(GtkEditable *editable,
  50                          const gchar *new_text,
  51                          gint new_text_length,
  52                          gint *position,
  53                          wxTextCtrl *win)
  54 {
  55     // we should only be called if we have a max len limit at all
  56     GtkEntry *entry = GTK_ENTRY (editable);
  57
  58     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
  59
  60     // check that we don't overflow the max length limit
  61     //
  62     // FIXME: this doesn't work when we paste a string which is going to be
  63     //        truncated
  64     if ( entry->text_length == entry->text_max_length )
  65     {
  66         // we don't need to run the base class version at all
  67         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
  68
  69         // remember that the next changed signal is to be ignored to avoid
  70         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
  71         win->IgnoreNextTextUpdate();
  72
  73         // and generate the correct one ourselves
  74         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
  75         event.SetEventObject(win);
  76         event.SetString(win->GetValue());
  77         win->GetEventHandler()->ProcessEvent( event );
  78     }
  79 }
  80
  81 //-----------------------------------------------------------------------------
  82 //  "changed"
  83 //-----------------------------------------------------------------------------
  84
  85 static void
  86 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  87 {
  88     if ( win->IgnoreTextUpdate() )
  89         return;
  90
  91     if (!win->m_hasVMT) return;
  92
  93     if (g_isIdle)
  94         wxapp_install_idle_handler();
  95
  96     win->SetModified();
  97     win->UpdateFontIfNeeded();
  98
  99     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 100     event.SetEventObject( win );
 101     event.SetString( win->GetValue() );
 102     win->GetEventHandler()->ProcessEvent( event );
 103 }
 104
 105 //-----------------------------------------------------------------------------
 106 // "changed" from vertical scrollbar
 107 //-----------------------------------------------------------------------------
 108
 109 static void
 110 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 111 {
 112     if (!win->m_hasVMT) return;
 113
 114     if (g_isIdle)
 115         wxapp_install_idle_handler();
 116
 117     win->CalculateScrollbar();
 118 }
 119
 120 //-----------------------------------------------------------------------------
 121 // "focus_in_event"
 122 //-----------------------------------------------------------------------------
 123
 124 extern wxWindow  *g_focusWindow;
 125 extern bool       g_blockEventsOnDrag;
 126 // extern bool g_isIdle;
 127
 128 static gint gtk_text_focus_in_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
 129 {
 130     // Necessary?
 131 #if 0
 132     if (g_isIdle)
 133         wxapp_install_idle_handler();
 134 #endif
 135     if (!win->m_hasVMT) return FALSE;
 136     if (g_blockEventsOnDrag) return FALSE;
 137
 138     g_focusWindow = win;
 139
 140     // notify the parent that we got the focus
 141     wxChildFocusEvent eventFocus(win);
 142     (void)win->GetEventHandler()->ProcessEvent(eventFocus);
 143
 144 #ifdef HAVE_XIM
 145     if (win->m_ic)
 146         gdk_im_begin(win->m_ic, win->m_wxwindow->window);
 147 #endif
 148
 149 #if 0
 150 #ifdef wxUSE_CARET
 151     // caret needs to be informed about focus change
 152     wxCaret *caret = win->GetCaret();
 153     if ( caret )
 154     {
 155         caret->OnSetFocus();
 156     }
 157 #endif // wxUSE_CARET
 158 #endif
 159
 160     wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 161     event.SetEventObject( win );
 162
 163     if (win->GetEventHandler()->ProcessEvent( event ))
 164     {
 165         return TRUE;
 166     }
 167
 168     return FALSE;
 169 }
 170
 171 //-----------------------------------------------------------------------------
 172 // "focus_out_event"
 173 //-----------------------------------------------------------------------------
 174
 175 static gint gtk_text_focus_out_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
 176 {
 177 #if 0
 178     if (g_isIdle)
 179         wxapp_install_idle_handler();
 180 #endif
 181
 182     if (!win->m_hasVMT) return FALSE;
 183     if (g_blockEventsOnDrag) return FALSE;
 184
 185 #if 0
 186     // if the focus goes out of our app alltogether, OnIdle() will send
 187     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 188     // g_sendActivateEvent to -1
 189     g_sendActivateEvent = 0;
 190 #endif
 191
 192     wxWindow *winFocus = wxFindFocusedChild(win);
 193     if ( winFocus )
 194         win = winFocus;
 195
 196     g_focusWindow = (wxWindow *)NULL;
 197
 198 #ifdef HAVE_XIM
 199     if (win->m_ic)
 200         gdk_im_end();
 201 #endif
 202
 203 #if 0
 204 #ifdef wxUSE_CARET
 205     // caret needs to be informed about focus change
 206     wxCaret *caret = win->GetCaret();
 207     if ( caret )
 208     {
 209         caret->OnKillFocus();
 210     }
 211 #endif // wxUSE_CARET
 212 #endif
 213
 214     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
 215     event.SetEventObject( win );
 216
 217     if (win->GetEventHandler()->ProcessEvent( event ))
 218     {
 219         return TRUE;
 220     }
 221
 222     return FALSE;
 223 }
 224
 225 //-----------------------------------------------------------------------------
 226 //  wxTextCtrl
 227 //-----------------------------------------------------------------------------
 228
 229 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 230
 231 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 232     EVT_CHAR(wxTextCtrl::OnChar)
 233
 234     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 235     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 236     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 237     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 238     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 239
 240     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 241     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 242     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 243     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 244     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 245 END_EVENT_TABLE()
 246
 247 void wxTextCtrl::Init()
 248 {
 249     m_ignoreNextUpdate =
 250     m_modified = FALSE;
 251     m_updateFont = FALSE;
 252     m_text =
 253     m_vScrollbar = (GtkWidget *)NULL;
 254 }
 255
 256 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 257                         wxWindowID id,
 258                         const wxString &value,
 259                         const wxPoint &pos,
 260                         const wxSize &size,
 261                         long style,
 262                         const wxValidator& validator,
 263                         const wxString &name )
 264 {
 265     Init();
 266
 267     Create( parent, id, value, pos, size, style, validator, name );
 268 }
 269
 270 bool wxTextCtrl::Create( wxWindow *parent,
 271                          wxWindowID id,
 272                          const wxString &value,
 273                          const wxPoint &pos,
 274                          const wxSize &size,
 275                          long style,
 276                          const wxValidator& validator,
 277                          const wxString &name )
 278 {
 279     m_needParent = TRUE;
 280     m_acceptsFocus = TRUE;
 281
 282     if (!PreCreation( parent, pos, size ) ||
 283         !CreateBase( parent, id, pos, size, style, validator, name ))
 284     {
 285         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 286         return FALSE;
 287     }
 288
 289
 290     m_vScrollbarVisible = FALSE;
 291
 292     bool multi_line = (style & wxTE_MULTILINE) != 0;
 293     if (multi_line)
 294     {
 295 #if (GTK_MINOR_VERSION > 2)
 296         /* a multi-line edit control: create a vertical scrollbar by default and
 297            horizontal if requested */
 298         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 299 #else
 300         bool bHasHScrollbar = FALSE;
 301 #endif
 302
 303         /* create our control ... */
 304         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 305
 306         /* ... and put into the upper left hand corner of the table */
 307         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 308         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 309         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 310                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 311                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 312                        0, 0);
 313
 314         /* always wrap words */
 315         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 316
 317 #if (GTK_MINOR_VERSION > 2)
 318         /* put the horizontal scrollbar in the lower left hand corner */
 319         if (bHasHScrollbar)
 320         {
 321             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 322             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 323             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 324                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 325                        GTK_FILL,
 326                        0, 0);
 327             gtk_widget_show(hscrollbar);
 328
 329             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 330             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 331         }
 332 #endif
 333
 334         /* finally, put the vertical scrollbar in the upper right corner */
 335         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 336         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 337         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 338                      GTK_FILL,
 339                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 340                      0, 0);
 341     }
 342     else
 343     {
 344         /* a single-line text control: no need for scrollbars */
 345         m_widget =
 346           m_text = gtk_entry_new();
 347     }
 348
 349     m_parent->DoAddChild( this );
 350
 351     PostCreation();
 352
 353     SetFont( parent->GetFont() );
 354
 355     wxSize size_best( DoGetBestSize() );
 356     wxSize new_size( size );
 357     if (new_size.x == -1)
 358         new_size.x = size_best.x;
 359     if (new_size.y == -1)
 360         new_size.y = size_best.y;
 361     if ((new_size.x != size.x) || (new_size.y != size.y))
 362         SetSize( new_size.x, new_size.y );
 363
 364     if (multi_line)
 365         gtk_widget_show(m_text);
 366
 367     if (multi_line)
 368     {
 369         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 370           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 371
 372         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_in_event",
 373               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 374
 375         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_out_event",
 376                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 377     }
 378     else
 379     {
 380         gtk_signal_connect( GTK_OBJECT(m_text), "focus_in_event",
 381               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 382
 383         gtk_signal_connect( GTK_OBJECT(m_text), "focus_out_event",
 384                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 385     }
 386
 387     if (!value.IsEmpty())
 388     {
 389         gint tmp = 0;
 390
 391 #if GTK_MINOR_VERSION == 0
 392         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 393         // gtk_editable_insert_text()
 394         gtk_widget_realize(m_text);
 395 #endif // GTK 1.0
 396
 397 #if wxUSE_UNICODE
 398         wxWX2MBbuf val = value.mbc_str();
 399         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 400 #else // !Unicode
 401         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 402 #endif // Unicode/!Unicode
 403
 404         if (multi_line)
 405         {
 406             /* bring editable's cursor uptodate. bug in GTK. */
 407
 408             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 409         }
 410     }
 411
 412     if (style & wxTE_PASSWORD)
 413     {
 414         if (!multi_line)
 415             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 416     }
 417
 418     if (style & wxTE_READONLY)
 419     {
 420         if (!multi_line)
 421             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 422     }
 423     else
 424     {
 425         if (multi_line)
 426             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 427     }
 428
 429     /* we want to be notified about text changes */
 430     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 431       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 432
 433     /* we don't set a valid background colour, because the window
 434        manager should use a default one */
 435     m_backgroundColour = wxColour();
 436
 437     wxColour colFg = parent->GetForegroundColour();
 438     SetForegroundColour( colFg );
 439
 440     m_cursor = wxCursor( wxCURSOR_IBEAM );
 441
 442     // FIXME: is the bg colour correct here?
 443     wxTextAttr attrDef( colFg,
 444                         wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW),
 445                         parent->GetFont() );
 446     SetDefaultStyle( attrDef );
 447
 448     Show( TRUE );
 449
 450     return TRUE;
 451 }
 452
 453 void wxTextCtrl::CalculateScrollbar()
 454 {
 455     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 456
 457     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 458
 459     if (adj->upper - adj->page_size < 0.8)
 460     {
 461         if (m_vScrollbarVisible)
 462         {
 463             gtk_widget_hide( m_vScrollbar );
 464             m_vScrollbarVisible = FALSE;
 465         }
 466     }
 467     else
 468     {
 469         if (!m_vScrollbarVisible)
 470         {
 471             gtk_widget_show( m_vScrollbar );
 472             m_vScrollbarVisible = TRUE;
 473         }
 474     }
 475 }
 476
 477 wxString wxTextCtrl::GetValue() const
 478 {
 479     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 480
 481     wxString tmp;
 482     if (m_windowStyle & wxTE_MULTILINE)
 483     {
 484         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 485         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 486         tmp = wxString(text,*wxConvCurrent);
 487         g_free( text );
 488     }
 489     else
 490     {
 491         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 492     }
 493     return tmp;
 494 }
 495
 496 void wxTextCtrl::SetValue( const wxString &value )
 497 {
 498     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 499
 500     if (m_windowStyle & wxTE_MULTILINE)
 501     {
 502         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 503         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 504         len = 0;
 505 #if wxUSE_UNICODE
 506         wxWX2MBbuf tmpbuf = value.mbc_str();
 507         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 508 #else
 509         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 510 #endif
 511     }
 512     else
 513     {
 514         gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
 515     }
 516
 517     // GRG, Jun/2000: Changed this after a lot of discussion in
 518     //   the lists. wxWindows 2.2 will have a set of flags to
 519     //   customize this behaviour.
 520     SetInsertionPoint(0);
 521
 522     m_modified = FALSE;
 523 }
 524
 525 void wxTextCtrl::WriteText( const wxString &text )
 526 {
 527     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 528
 529     if ( text.empty() )
 530         return;
 531
 532 #if wxUSE_UNICODE
 533     wxWX2MBbuf buf = text.mbc_str();
 534     const char *txt = buf;
 535     size_t txtlen = strlen(buf);
 536 #else
 537     const char *txt = text;
 538     size_t txtlen = text.length();
 539 #endif
 540
 541     if ( m_windowStyle & wxTE_MULTILINE )
 542     {
 543         /* this moves the cursor pos to behind the inserted text */
 544         gint len = GTK_EDITABLE(m_text)->current_pos;
 545
 546         // if we have any special style, use it
 547         if ( !m_defaultStyle.IsDefault() )
 548         {
 549             GdkFont *font = m_defaultStyle.HasFont()
 550                                 ? m_defaultStyle.GetFont().GetInternalFont()
 551                                 : NULL;
 552
 553             GdkColor *colFg = m_defaultStyle.HasTextColour()
 554                                 ? m_defaultStyle.GetTextColour().GetColor()
 555                                 : NULL;
 556
 557             GdkColor *colBg = m_defaultStyle.HasBackgroundColour()
 558                                 ? m_defaultStyle.GetBackgroundColour().GetColor()
 559                                 : NULL;
 560
 561             gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
 562         }
 563         else // no style
 564         {
 565             gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 566         }
 567
 568         /* bring editable's cursor uptodate. bug in GTK. */
 569         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 570     }
 571     else // single line
 572     {
 573         /* this moves the cursor pos to behind the inserted text */
 574         gint len = GTK_EDITABLE(m_text)->current_pos;
 575         gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 576
 577         /* bring editable's cursor uptodate. bug in GTK. */
 578         GTK_EDITABLE(m_text)->current_pos += text.Len();
 579
 580         /* bring entry's cursor uptodate. bug in GTK. */
 581         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 582     }
 583 }
 584
 585 void wxTextCtrl::AppendText( const wxString &text )
 586 {
 587     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 588
 589     if ( text.empty() )
 590         return;
 591
 592 #if wxUSE_UNICODE
 593     wxWX2MBbuf buf = text.mbc_str();
 594     const char *txt = buf;
 595     size_t txtlen = strlen(buf);
 596 #else
 597     const char *txt = text;
 598     size_t txtlen = text.length();
 599 #endif
 600
 601     if (m_windowStyle & wxTE_MULTILINE)
 602     {
 603         if ( !m_defaultStyle.IsDefault() )
 604         {
 605             wxFont font = m_defaultStyle.HasFont() ? m_defaultStyle.GetFont()
 606                                                    : m_font;
 607             GdkFont *fnt = font.Ok() ? font.GetInternalFont() : NULL;
 608
 609             wxColour col = m_defaultStyle.HasTextColour()
 610                                 ? m_defaultStyle.GetTextColour()
 611                                 : m_foregroundColour;
 612             GdkColor *colFg = col.Ok() ? col.GetColor() : NULL;
 613
 614             col = m_defaultStyle.HasBackgroundColour()
 615                     ? m_defaultStyle.GetBackgroundColour()
 616                     : m_backgroundColour;
 617             GdkColor *colBg = col.Ok() ? col.GetColor() : NULL;
 618
 619             gtk_text_insert( GTK_TEXT(m_text), fnt, colFg, colBg, txt, txtlen );
 620         }
 621         else // no style
 622         {
 623             /* we'll insert at the last position */
 624             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 625             gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 626         }
 627
 628         /* bring editable's cursor uptodate. bug in GTK. */
 629         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 630     }
 631     else // single line
 632     {
 633         gtk_entry_append_text( GTK_ENTRY(m_text), txt );
 634     }
 635 }
 636
 637 wxString wxTextCtrl::GetLineText( long lineNo ) const
 638 {
 639   if (m_windowStyle & wxTE_MULTILINE)
 640   {
 641     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 642     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 643
 644     if (text)
 645     {
 646         wxString buf(wxT(""));
 647         long i;
 648         int currentLine = 0;
 649         for (i = 0; currentLine != lineNo && text[i]; i++ )
 650           if (text[i] == '\n')
 651             currentLine++;
 652         // Now get the text
 653         int j;
 654         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 655             buf += text[i];
 656
 657         g_free( text );
 658         return buf;
 659     }
 660     else
 661       return wxEmptyString;
 662   }
 663   else
 664   {
 665     if (lineNo == 0) return GetValue();
 666     return wxEmptyString;
 667   }
 668 }
 669
 670 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 671 {
 672   /* If you implement this, don't forget to update the documentation!
 673    * (file docs/latex/wx/text.tex) */
 674     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 675 }
 676
 677 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 678 {
 679     if ( m_windowStyle & wxTE_MULTILINE )
 680     {
 681         wxString text = GetValue();
 682
 683         // cast to prevent warning. But pos really should've been unsigned.
 684         if( (unsigned long)pos > text.Len()  )
 685             return FALSE;
 686
 687         *x=0;   // First Col
 688         *y=0;   // First Line
 689
 690         const wxChar* stop = text.c_str() + pos;
 691         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 692         {
 693             if (*p == wxT('\n'))
 694             {
 695                 (*y)++;
 696                 *x=0;
 697             }
 698             else
 699                 (*x)++;
 700         }
 701     }
 702     else // single line control
 703     {
 704         if ( pos <= GTK_ENTRY(m_text)->text_length )
 705         {
 706             *y = 0;
 707             *x = pos;
 708         }
 709         else
 710         {
 711             // index out of bounds
 712             return FALSE;
 713         }
 714     }
 715
 716     return TRUE;
 717 }
 718
 719 long wxTextCtrl::XYToPosition(long x, long y ) const
 720 {
 721     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 722
 723     long pos=0;
 724     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 725
 726     pos += x;
 727     return pos;
 728 }
 729
 730 int wxTextCtrl::GetLineLength(long lineNo) const
 731 {
 732     wxString str = GetLineText (lineNo);
 733     return (int) str.Length();
 734 }
 735
 736 int wxTextCtrl::GetNumberOfLines() const
 737 {
 738     if (m_windowStyle & wxTE_MULTILINE)
 739     {
 740         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 741         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 742
 743         if (text)
 744         {
 745             int currentLine = 0;
 746             for (int i = 0; i < len; i++ )
 747             {
 748                 if (text[i] == '\n')
 749                     currentLine++;
 750             }
 751             g_free( text );
 752
 753             // currentLine is 0 based, add 1 to get number of lines
 754             return currentLine + 1;
 755         }
 756         else
 757         {
 758             return 0;
 759         }
 760     }
 761     else
 762     {
 763         return 1;
 764     }
 765 }
 766
 767 void wxTextCtrl::SetInsertionPoint( long pos )
 768 {
 769     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 770
 771     if (m_windowStyle & wxTE_MULTILINE)
 772     {
 773         /* seems to be broken in GTK 1.0.X:
 774            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 775
 776         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 777           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 778
 779         /* we fake a set_point by inserting and deleting. as the user
 780            isn't supposed to get to know about thos non-sense, we
 781            disconnect so that no events are sent to the user program. */
 782
 783         gint tmp = (gint)pos;
 784         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 785         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 786
 787         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 788           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 789
 790         /* bring editable's cursor uptodate. another bug in GTK. */
 791
 792         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 793     }
 794     else
 795     {
 796         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 797
 798         /* bring editable's cursor uptodate. bug in GTK. */
 799
 800         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 801     }
 802 }
 803
 804 void wxTextCtrl::SetInsertionPointEnd()
 805 {
 806     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 807
 808     if (m_windowStyle & wxTE_MULTILINE)
 809         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 810     else
 811         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 812 }
 813
 814 void wxTextCtrl::SetEditable( bool editable )
 815 {
 816     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 817
 818     if (m_windowStyle & wxTE_MULTILINE)
 819         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 820     else
 821         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 822 }
 823
 824 bool wxTextCtrl::Enable( bool enable )
 825 {
 826     if (!wxWindowBase::Enable(enable))
 827     {
 828         // nothing to do
 829         return FALSE;
 830     }
 831
 832     if (m_windowStyle & wxTE_MULTILINE)
 833     {
 834         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 835         OnParentEnable(enable);
 836     }
 837     else
 838     {
 839         gtk_widget_set_sensitive( m_text, enable );
 840     }
 841
 842     return TRUE;
 843 }
 844
 845 // wxGTK-specific: called recursively by Enable,
 846 // to give widgets an oppprtunity to correct their colours after they
 847 // have been changed by Enable
 848 void wxTextCtrl::OnParentEnable( bool enable )
 849 {
 850     // If we have a custom background colour, we use this colour in both
 851     // disabled and enabled mode, or we end up with a different colour under the
 852     // text.
 853     wxColour oldColour = GetBackgroundColour();
 854     if (oldColour.Ok())
 855     {
 856         // Need to set twice or it'll optimize the useful stuff out
 857         if (oldColour == * wxWHITE)
 858             SetBackgroundColour(*wxBLACK);
 859         else
 860             SetBackgroundColour(*wxWHITE);
 861         SetBackgroundColour(oldColour);
 862     }
 863 }
 864
 865 void wxTextCtrl::DiscardEdits()
 866 {
 867     m_modified = FALSE;
 868 }
 869
 870 // ----------------------------------------------------------------------------
 871 // max text length support
 872 // ----------------------------------------------------------------------------
 873
 874 void wxTextCtrl::IgnoreNextTextUpdate()
 875 {
 876     m_ignoreNextUpdate = TRUE;
 877 }
 878
 879 bool wxTextCtrl::IgnoreTextUpdate()
 880 {
 881     if ( m_ignoreNextUpdate )
 882     {
 883         m_ignoreNextUpdate = FALSE;
 884
 885         return TRUE;
 886     }
 887
 888     return FALSE;
 889 }
 890
 891 void wxTextCtrl::SetMaxLength(unsigned long len)
 892 {
 893     if ( !HasFlag(wxTE_MULTILINE) )
 894     {
 895         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 896
 897         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 898         // we had tried to enter more text than allowed by max text length and
 899         // the text wasn't really changed
 900         //
 901         // to detect this and generate TEXT_MAXLEN event instead of
 902         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 903         //
 904         // when max len is set to 0 we disconnect our handler as it means that
 905         // we shouldn't check anything any more
 906         if ( len )
 907         {
 908             gtk_signal_connect( GTK_OBJECT(m_text),
 909                                 "insert_text",
 910                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 911                                 (gpointer)this);
 912         }
 913         else // no checking
 914         {
 915             gtk_signal_disconnect_by_func
 916             (
 917                 GTK_OBJECT(m_text),
 918                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 919                 (gpointer)this
 920             );
 921         }
 922     }
 923 }
 924
 925 void wxTextCtrl::SetSelection( long from, long to )
 926 {
 927     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 928
 929     if ( (m_windowStyle & wxTE_MULTILINE) &&
 930          !GTK_TEXT(m_text)->line_start_cache )
 931     {
 932         // tell the programmer that it didn't work
 933         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 934         return;
 935     }
 936
 937     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 938 }
 939
 940 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 941 {
 942 //    SetInsertionPoint( pos );
 943 }
 944
 945 long wxTextCtrl::GetInsertionPoint() const
 946 {
 947     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 948
 949     return (long) GTK_EDITABLE(m_text)->current_pos;
 950 }
 951
 952 long wxTextCtrl::GetLastPosition() const
 953 {
 954     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 955
 956     int pos = 0;
 957     if (m_windowStyle & wxTE_MULTILINE)
 958         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 959     else
 960         pos = GTK_ENTRY(m_text)->text_length;
 961
 962     return (long)pos;
 963 }
 964
 965 void wxTextCtrl::Remove( long from, long to )
 966 {
 967     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 968
 969     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 970 }
 971
 972 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 973 {
 974     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 975
 976     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 977
 978     if (!value.IsEmpty())
 979     {
 980         gint pos = (gint)from;
 981 #if wxUSE_UNICODE
 982         wxWX2MBbuf buf = value.mbc_str();
 983         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 984 #else
 985         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 986 #endif
 987     }
 988 }
 989
 990 void wxTextCtrl::Cut()
 991 {
 992     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 993
 994 #if (GTK_MINOR_VERSION > 0)
 995     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 996 #else
 997     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 998 #endif
 999 }
1000
1001 void wxTextCtrl::Copy()
1002 {
1003     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1004
1005 #if (GTK_MINOR_VERSION > 0)
1006     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
1007 #else
1008     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
1009 #endif
1010 }
1011
1012 void wxTextCtrl::Paste()
1013 {
1014     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1015
1016 #if (GTK_MINOR_VERSION > 0)
1017     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
1018 #else
1019     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
1020 #endif
1021 }
1022
1023 // Undo/redo
1024 void wxTextCtrl::Undo()
1025 {
1026     // TODO
1027     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1028 }
1029
1030 void wxTextCtrl::Redo()
1031 {
1032     // TODO
1033     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1034 }
1035
1036 bool wxTextCtrl::CanUndo() const
1037 {
1038     // TODO
1039     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1040     return FALSE;
1041 }
1042
1043 bool wxTextCtrl::CanRedo() const
1044 {
1045     // TODO
1046     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1047     return FALSE;
1048 }
1049
1050 // If the return values from and to are the same, there is no
1051 // selection.
1052 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1053 {
1054     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1055
1056     long from, to;
1057     if ( !(GTK_EDITABLE(m_text)->has_selection) )
1058     {
1059         from =
1060         to = GetInsertionPoint();
1061     }
1062     else // got selection
1063     {
1064         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1065         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1066
1067         if ( from > to )
1068         {
1069             // exchange them to be compatible with wxMSW
1070             long tmp = from;
1071             from = to;
1072             to = tmp;
1073         }
1074     }
1075
1076     if ( fromOut )
1077         *fromOut = from;
1078     if ( toOut )
1079         *toOut = to;
1080 }
1081
1082 bool wxTextCtrl::IsEditable() const
1083 {
1084     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1085
1086     return GTK_EDITABLE(m_text)->editable;
1087 }
1088
1089 bool wxTextCtrl::IsModified() const
1090 {
1091     return m_modified;
1092 }
1093
1094 void wxTextCtrl::Clear()
1095 {
1096     SetValue( wxT("") );
1097 }
1098
1099 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1100 {
1101     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1102
1103     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1104     {
1105         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1106         event.SetEventObject(this);
1107         event.SetString(GetValue());
1108         if (GetEventHandler()->ProcessEvent(event)) return;
1109     }
1110
1111     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1112     {
1113         wxWindow *top_frame = m_parent;
1114         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1115             top_frame = top_frame->GetParent();
1116         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1117
1118         if (window->default_widget)
1119         {
1120             gtk_widget_activate (window->default_widget);
1121             return;
1122         }
1123     }
1124
1125     key_event.Skip();
1126 }
1127
1128 GtkWidget* wxTextCtrl::GetConnectWidget()
1129 {
1130     return GTK_WIDGET(m_text);
1131 }
1132
1133 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1134 {
1135     if (m_windowStyle & wxTE_MULTILINE)
1136         return (window == GTK_TEXT(m_text)->text_area);
1137     else
1138         return (window == GTK_ENTRY(m_text)->text_area);
1139 }
1140
1141 // the font will change for subsequent text insertiongs
1142 bool wxTextCtrl::SetFont( const wxFont &font )
1143 {
1144     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1145
1146     if ( !wxWindowBase::SetFont(font) )
1147     {
1148         // font didn't change, nothing to do
1149         return FALSE;
1150     }
1151
1152     if ( m_windowStyle & wxTE_MULTILINE )
1153     {
1154         m_updateFont = TRUE;
1155
1156         m_defaultStyle.SetFont(font);
1157
1158         ChangeFontGlobally();
1159     }
1160
1161     return TRUE;
1162 }
1163
1164 void wxTextCtrl::ChangeFontGlobally()
1165 {
1166     // this method is very inefficient and hence should be called as rarely as
1167     // possible!
1168     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1169                   _T("shouldn't be called for single line controls") );
1170
1171     wxString value = GetValue();
1172     if ( !value.IsEmpty() )
1173     {
1174         m_updateFont = FALSE;
1175
1176         Clear();
1177         AppendText(value);
1178     }
1179 }
1180
1181 void wxTextCtrl::UpdateFontIfNeeded()
1182 {
1183     if ( m_updateFont )
1184         ChangeFontGlobally();
1185 }
1186
1187 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1188 {
1189     if ( !wxControl::SetForegroundColour(colour) )
1190         return FALSE;
1191
1192     // update default fg colour too
1193     m_defaultStyle.SetTextColour(colour);
1194
1195     return TRUE;
1196 }
1197
1198 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1199 {
1200     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1201
1202     if ( !wxControl::SetBackgroundColour( colour ) )
1203         return FALSE;
1204
1205     if (!m_widget->window)
1206         return FALSE;
1207
1208     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1209     if (sysbg.Red() == colour.Red() &&
1210         sysbg.Green() == colour.Green() &&
1211         sysbg.Blue() == colour.Blue())
1212     {
1213         return FALSE; // FIXME or TRUE?
1214     }
1215
1216     if (!m_backgroundColour.Ok())
1217         return FALSE;
1218
1219     if (m_windowStyle & wxTE_MULTILINE)
1220     {
1221         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1222         if (!window)
1223             return FALSE;
1224         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1225         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1226         gdk_window_clear( window );
1227     }
1228
1229     // change active background color too
1230     m_defaultStyle.SetBackgroundColour( colour );
1231
1232     return TRUE;
1233 }
1234
1235 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr &style )
1236 {
1237     /* VERY dirty way to do that - removes the required text and re-adds it
1238        with styling (FIXME) */
1239     if ( m_windowStyle & wxTE_MULTILINE )
1240     {
1241         if ( style.IsDefault() )
1242         {
1243             // nothing to do
1244             return TRUE;
1245         }
1246
1247         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1248
1249         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1250                      _T("invalid range in wxTextCtrl::SetStyle") );
1251
1252         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1253         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1254         wxString tmp(text,*wxConvCurrent);
1255         g_free( text );
1256
1257         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1258         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1259
1260 #if wxUSE_UNICODE
1261         wxWX2MBbuf buf = tmp.mbc_str();
1262         const char *txt = buf;
1263         size_t txtlen = strlen(buf);
1264 #else
1265         const char *txt = tmp;
1266         size_t txtlen = tmp.length();
1267 #endif
1268
1269         GdkFont *font = style.HasFont()
1270                             ? style.GetFont().GetInternalFont()
1271                             : NULL;
1272
1273         GdkColor *colFg = style.HasTextColour()
1274                             ? style.GetTextColour().GetColor()
1275                             : NULL;
1276
1277         GdkColor *colBg = style.HasBackgroundColour()
1278                             ? style.GetBackgroundColour().GetColor()
1279                             : NULL;
1280
1281         gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
1282
1283         /* does not seem to help under GTK+ 1.2 !!!
1284         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1285         SetInsertionPoint( old_pos );
1286         return TRUE;
1287     }
1288     else // singe line
1289     {
1290         // cannot do this for GTK+'s Entry widget
1291         return FALSE;
1292     }
1293 }
1294
1295 void wxTextCtrl::ApplyWidgetStyle()
1296 {
1297     if (m_windowStyle & wxTE_MULTILINE)
1298     {
1299         // how ?
1300     }
1301     else
1302     {
1303         SetWidgetStyle();
1304         gtk_widget_set_style( m_text, m_widgetStyle );
1305     }
1306 }
1307
1308 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1309 {
1310     Cut();
1311 }
1312
1313 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1314 {
1315     Copy();
1316 }
1317
1318 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1319 {
1320     Paste();
1321 }
1322
1323 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1324 {
1325     Undo();
1326 }
1327
1328 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1329 {
1330     Redo();
1331 }
1332
1333 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1334 {
1335     event.Enable( CanCut() );
1336 }
1337
1338 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1339 {
1340     event.Enable( CanCopy() );
1341 }
1342
1343 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1344 {
1345     event.Enable( CanPaste() );
1346 }
1347
1348 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1349 {
1350     event.Enable( CanUndo() );
1351 }
1352
1353 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1354 {
1355     event.Enable( CanRedo() );
1356 }
1357
1358 void wxTextCtrl::OnInternalIdle()
1359 {
1360     wxCursor cursor = m_cursor;
1361     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1362
1363     if (cursor.Ok())
1364     {
1365         GdkWindow *window = (GdkWindow*) NULL;
1366         if (HasFlag(wxTE_MULTILINE))
1367             window = GTK_TEXT(m_text)->text_area;
1368         else
1369             window = GTK_ENTRY(m_text)->text_area;
1370
1371         if (window)
1372             gdk_window_set_cursor( window, cursor.GetCursor() );
1373
1374         if (!g_globalCursor.Ok())
1375             cursor = *wxSTANDARD_CURSOR;
1376
1377         window = m_widget->window;
1378         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1379             gdk_window_set_cursor( window, cursor.GetCursor() );
1380     }
1381
1382     UpdateWindowUI();
1383 }
1384
1385 wxSize wxTextCtrl::DoGetBestSize() const
1386 {
1387     // FIXME should be different for multi-line controls...
1388     wxSize ret( wxControl::DoGetBestSize() );
1389     return wxSize(80, ret.y);
1390 }
1391
1392 // ----------------------------------------------------------------------------
1393 // freeze/thaw
1394 // ----------------------------------------------------------------------------
1395
1396 void wxTextCtrl::Freeze()
1397 {
1398     if ( HasFlag(wxTE_MULTILINE) )
1399     {
1400         gtk_text_freeze(GTK_TEXT(m_text));
1401     }
1402 }
1403
1404 void wxTextCtrl::Thaw()
1405 {
1406     if ( HasFlag(wxTE_MULTILINE) )
1407     {
1408         GTK_TEXT(m_text)->vadj->value = 0.0;
1409
1410         gtk_text_thaw(GTK_TEXT(m_text));
1411     }
1412 }
1413
1414 // ----------------------------------------------------------------------------
1415 // scrolling
1416 // ----------------------------------------------------------------------------
1417
1418 GtkAdjustment *wxTextCtrl::GetVAdj() const
1419 {
1420     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1421 }
1422
1423 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1424 {
1425     float value = adj->value + diff;
1426
1427     if ( value < 0 )
1428         value = 0;
1429
1430     float upper = adj->upper - adj->page_size;
1431     if ( value > upper )
1432         value = upper;
1433
1434     // did we noticeably change the scroll position?
1435     if ( fabs(adj->value - value) < 0.2 )
1436     {
1437         // well, this is what Robert does in wxScrollBar, so it must be good...
1438         return FALSE;
1439     }
1440
1441     adj->value = value;
1442
1443     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1444
1445     return TRUE;
1446 }
1447
1448 bool wxTextCtrl::ScrollLines(int lines)
1449 {
1450     GtkAdjustment *adj = GetVAdj();
1451     if ( !adj )
1452         return FALSE;
1453
1454     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1455     static const int KEY_SCROLL_PIXELS = 10;
1456
1457     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1458 }
1459
1460 bool wxTextCtrl::ScrollPages(int pages)
1461 {
1462     GtkAdjustment *adj = GetVAdj();
1463     if ( !adj )
1464         return FALSE;
1465
1466     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1467 }
1468