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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29 #include <math.h>               // for fabs
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // data
  43 //-----------------------------------------------------------------------------
  44
  45 extern bool       g_blockEventsOnDrag;
  46 extern wxCursor   g_globalCursor;
  47 extern wxWindowGTK *g_delayedFocus;
  48
  49 // ----------------------------------------------------------------------------
  50 // helpers
  51 // ----------------------------------------------------------------------------
  52
  53 #ifdef __WXGTK20__
  54 static void wxGtkTextInsert(GtkWidget *text,
  55                             GtkTextBuffer *text_buffer,
  56                             const wxTextAttr& attr,
  57                             wxCharBuffer buffer)
  58
  59 {
  60     PangoFontDescription *font_description = attr.HasFont()
  61                          ? attr.GetFont().GetNativeFontInfo()->description
  62                          : NULL;
  63
  64     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  65                                            : NULL;
  66
  67     GdkColor *colBg = attr.HasBackgroundColour()
  68                         ? attr.GetBackgroundColour().GetColor()
  69                         : NULL;
  70
  71     GtkTextTag *tag;
  72     tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
  73                                      "foreground-gdk", colFg,
  74                                      "background-gdk", colBg, NULL );
  75
  76     GtkTextIter iter;
  77     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
  78                                      gtk_text_buffer_get_insert (text_buffer) );
  79
  80     gtk_text_buffer_insert_with_tags( text_buffer, &iter, buffer, strlen(buffer), tag, NULL );
  81 }
  82 #else
  83 static void wxGtkTextInsert(GtkWidget *text,
  84                             const wxTextAttr& attr,
  85                             const char *txt,
  86                             size_t len)
  87 {
  88     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
  89                                    : NULL;
  90
  91     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  92                                            : NULL;
  93
  94     GdkColor *colBg = attr.HasBackgroundColour()
  95                         ? attr.GetBackgroundColour().GetColor()
  96                         : NULL;
  97
  98     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
  99 }
 100 #endif // GTK 1.x
 101
 102 // ----------------------------------------------------------------------------
 103 // "insert_text" for GtkEntry
 104 // ----------------------------------------------------------------------------
 105
 106 static void
 107 gtk_insert_text_callback(GtkEditable *editable,
 108                          const gchar *new_text,
 109                          gint new_text_length,
 110                          gint *position,
 111                          wxTextCtrl *win)
 112 {
 113     if (g_isIdle)
 114         wxapp_install_idle_handler();
 115
 116     // we should only be called if we have a max len limit at all
 117     GtkEntry *entry = GTK_ENTRY (editable);
 118
 119     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 120
 121     // check that we don't overflow the max length limit
 122     //
 123     // FIXME: this doesn't work when we paste a string which is going to be
 124     //        truncated
 125     if ( entry->text_length == entry->text_max_length )
 126     {
 127         // we don't need to run the base class version at all
 128         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 129
 130         // remember that the next changed signal is to be ignored to avoid
 131         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 132         win->IgnoreNextTextUpdate();
 133
 134         // and generate the correct one ourselves
 135         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 136         event.SetEventObject(win);
 137         event.SetString(win->GetValue());
 138         win->GetEventHandler()->ProcessEvent( event );
 139     }
 140 }
 141
 142 //-----------------------------------------------------------------------------
 143 //  "changed"
 144 //-----------------------------------------------------------------------------
 145
 146 static void
 147 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 148 {
 149     if ( win->IgnoreTextUpdate() )
 150         return;
 151
 152     if (!win->m_hasVMT) return;
 153
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     win->SetModified();
 158     win->UpdateFontIfNeeded();
 159
 160     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 161     event.SetEventObject( win );
 162     event.SetString( win->GetValue() );
 163     win->GetEventHandler()->ProcessEvent( event );
 164 }
 165
 166 //-----------------------------------------------------------------------------
 167 // "changed" from vertical scrollbar
 168 //-----------------------------------------------------------------------------
 169
 170 #ifndef __WXGTK20__
 171 static void
 172 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 173 {
 174     if (!win->m_hasVMT) return;
 175
 176     if (g_isIdle)
 177         wxapp_install_idle_handler();
 178
 179     win->CalculateScrollbar();
 180 }
 181 #endif
 182
 183 // ----------------------------------------------------------------------------
 184 // redraw callback for multiline text
 185 // ----------------------------------------------------------------------------
 186
 187 #ifndef __WXGTK20__
 188
 189 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 190 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 191 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 192 // don't do anything if we're inside wxYield()
 193
 194 extern bool wxIsInsideYield;
 195
 196 extern "C" {
 197     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 198 }
 199
 200 static GtkDrawCallback gs_gtk_text_draw = NULL;
 201
 202 extern "C"
 203 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 204 {
 205     if ( !wxIsInsideYield )
 206     {
 207         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 208                      _T("infinite recursion in wxgtk_text_draw aborted") );
 209
 210         gs_gtk_text_draw(widget, rect);
 211     }
 212 }
 213
 214 #endif // __WXGTK20__
 215
 216 //-----------------------------------------------------------------------------
 217 //  wxTextCtrl
 218 //-----------------------------------------------------------------------------
 219
 220 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 221
 222 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 223     EVT_CHAR(wxTextCtrl::OnChar)
 224
 225     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 226     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 227     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 228     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 229     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 230
 231     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 232     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 233     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 234     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 235     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 236 END_EVENT_TABLE()
 237
 238 void wxTextCtrl::Init()
 239 {
 240     m_ignoreNextUpdate =
 241     m_modified = FALSE;
 242     m_updateFont = FALSE;
 243     m_text =
 244     m_vScrollbar = (GtkWidget *)NULL;
 245 }
 246
 247 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 248                         wxWindowID id,
 249                         const wxString &value,
 250                         const wxPoint &pos,
 251                         const wxSize &size,
 252                         long style,
 253                         const wxValidator& validator,
 254                         const wxString &name )
 255 {
 256     Init();
 257
 258     Create( parent, id, value, pos, size, style, validator, name );
 259 }
 260
 261 bool wxTextCtrl::Create( wxWindow *parent,
 262                          wxWindowID id,
 263                          const wxString &value,
 264                          const wxPoint &pos,
 265                          const wxSize &size,
 266                          long style,
 267                          const wxValidator& validator,
 268                          const wxString &name )
 269 {
 270     m_needParent = TRUE;
 271     m_acceptsFocus = TRUE;
 272
 273     if (!PreCreation( parent, pos, size ) ||
 274         !CreateBase( parent, id, pos, size, style, validator, name ))
 275     {
 276         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 277         return FALSE;
 278     }
 279
 280
 281     m_vScrollbarVisible = FALSE;
 282
 283     bool multi_line = (style & wxTE_MULTILINE) != 0;
 284
 285 #ifdef __WXGTK20__
 286     GtkTextBuffer *buffer = NULL;
 287 #endif
 288
 289     if (multi_line)
 290     {
 291 #ifdef __WXGTK20__
 292         // Create view
 293         m_text = gtk_text_view_new();
 294
 295         buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 296
 297         // create scrolled window
 298         m_widget = gtk_scrolled_window_new( NULL, NULL );
 299         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 300                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 301
 302         // Insert view into scrolled window
 303         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 304
 305         // Global settings which can be overridden by tags, I guess.
 306         if (HasFlag( wxHSCROLL ))
 307             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 308         else
 309             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 310
 311         if (!HasFlag(wxNO_BORDER))
 312             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 313 #else
 314         // create our control ...
 315         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 316
 317         // ... and put into the upper left hand corner of the table
 318         bool bHasHScrollbar = FALSE;
 319         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 320         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 321         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 322                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 323                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 324                        0, 0);
 325
 326         // always wrap words
 327         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 328
 329         // finally, put the vertical scrollbar in the upper right corner
 330         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 331         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 332         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 333                      GTK_FILL,
 334                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 335                      0, 0);
 336 #endif
 337     }
 338     else
 339     {
 340         // a single-line text control: no need for scrollbars
 341         m_widget =
 342         m_text = gtk_entry_new();
 343     }
 344
 345     m_parent->DoAddChild( this );
 346
 347     m_focusWidget = m_text;
 348
 349     PostCreation();
 350
 351     SetFont( parent->GetFont() );
 352
 353     wxSize size_best( DoGetBestSize() );
 354     wxSize new_size( size );
 355     if (new_size.x == -1)
 356         new_size.x = size_best.x;
 357     if (new_size.y == -1)
 358         new_size.y = size_best.y;
 359     if ((new_size.x != size.x) || (new_size.y != size.y))
 360         SetSize( new_size.x, new_size.y );
 361
 362     if (multi_line)
 363         gtk_widget_show(m_text);
 364
 365 #ifndef __WXGTK20__
 366     if (multi_line)
 367     {
 368         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 369           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 370
 371         // only initialize gs_gtk_text_draw once, starting from the next the
 372         // klass::draw will already be wxgtk_text_draw
 373         if ( !gs_gtk_text_draw )
 374         {
 375             GtkDrawCallback&
 376                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 377
 378             gs_gtk_text_draw = draw;
 379
 380             draw = wxgtk_text_draw;
 381         }
 382     }
 383 #endif // GTK+ 1.x
 384
 385     if (!value.IsEmpty())
 386     {
 387 #ifdef __WXGTK20__
 388         SetValue( value );
 389 #else
 390
 391 #if !GTK_CHECK_VERSION(1, 2, 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         gint tmp = 0;
 398 #if wxUSE_UNICODE
 399         wxWX2MBbuf val = value.mbc_str();
 400         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 401 #else
 402         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 403 #endif
 404
 405         if (multi_line)
 406         {
 407             // Bring editable's cursor uptodate. Bug in GTK.
 408             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 409         }
 410
 411 #endif
 412     }
 413
 414     if (style & wxTE_PASSWORD)
 415     {
 416         if (!multi_line)
 417             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 418     }
 419
 420     if (style & wxTE_READONLY)
 421     {
 422         if (!multi_line)
 423             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 424 #ifdef __WXGTK20__
 425         else
 426             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 427     }
 428 #else
 429     }
 430     else
 431     {
 432         if (multi_line)
 433             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 434     }
 435 #endif
 436
 437     // We want to be notified about text changes.
 438 #ifdef __WXGTK20__
 439     if (multi_line)
 440     {
 441         g_signal_connect( G_OBJECT(buffer), "changed",
 442             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 443     }
 444     else
 445 #endif
 446     {
 447     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 448        GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 449     }
 450
 451     // we don't set a valid background colour, because the window
 452     // manager should use a default one
 453     m_backgroundColour = wxColour();
 454
 455     wxColour colFg = parent->GetForegroundColour();
 456     SetForegroundColour( colFg );
 457
 458     m_cursor = wxCursor( wxCURSOR_IBEAM );
 459
 460     wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
 461     SetDefaultStyle( attrDef );
 462
 463     Show( TRUE );
 464
 465     return TRUE;
 466 }
 467
 468 void wxTextCtrl::CalculateScrollbar()
 469 {
 470 #ifndef __WXGTK20__
 471     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 472
 473     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 474
 475     if (adj->upper - adj->page_size < 0.8)
 476     {
 477         if (m_vScrollbarVisible)
 478         {
 479             gtk_widget_hide( m_vScrollbar );
 480             m_vScrollbarVisible = FALSE;
 481         }
 482     }
 483     else
 484     {
 485         if (!m_vScrollbarVisible)
 486         {
 487             gtk_widget_show( m_vScrollbar );
 488             m_vScrollbarVisible = TRUE;
 489         }
 490     }
 491 #endif
 492 }
 493
 494 wxString wxTextCtrl::GetValue() const
 495 {
 496     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 497
 498     wxString tmp;
 499     if (m_windowStyle & wxTE_MULTILINE)
 500     {
 501 #ifdef __WXGTK20__
 502         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 503
 504         GtkTextIter start;
 505         gtk_text_buffer_get_start_iter( text_buffer, &start );
 506         GtkTextIter end;
 507         gtk_text_buffer_get_end_iter( text_buffer, &end );
 508         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 509
 510 #if wxUSE_UNICODE
 511         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 512 #else
 513         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 514 #endif
 515         tmp = buffer;
 516
 517         g_free( text );
 518 #else
 519         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 520         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 521         tmp = text;
 522         g_free( text );
 523 #endif
 524     }
 525     else
 526     {
 527         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 528     }
 529
 530     return tmp;
 531 }
 532
 533 void wxTextCtrl::SetValue( const wxString &value )
 534 {
 535     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 536
 537     if (m_windowStyle & wxTE_MULTILINE)
 538     {
 539 #ifdef __WXGTK20__
 540
 541 #if wxUSE_UNICODE
 542         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 543 #else
 544         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 545 #endif
 546         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 547         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 548
 549 #else
 550         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 551         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 552         len = 0;
 553         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 554 #endif
 555     }
 556     else
 557     {
 558         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 559     }
 560
 561     // GRG, Jun/2000: Changed this after a lot of discussion in
 562     //   the lists. wxWindows 2.2 will have a set of flags to
 563     //   customize this behaviour.
 564     SetInsertionPoint(0);
 565
 566     m_modified = FALSE;
 567 }
 568
 569 void wxTextCtrl::WriteText( const wxString &text )
 570 {
 571     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 572
 573     if ( text.empty() )
 574         return;
 575
 576     if ( m_windowStyle & wxTE_MULTILINE )
 577     {
 578 #ifdef __WXGTK20__
 579
 580 #if wxUSE_UNICODE
 581         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 582 #else
 583         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 584 #endif
 585         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 586
 587         // TODO: Call whatever is needed to delete the selection.
 588         wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
 589
 590         // Scroll to cursor.
 591         GtkTextIter iter;
 592         gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,  gtk_text_buffer_get_insert( text_buffer ) );
 593         gtk_text_view_scroll_to_iter( GTK_TEXT_VIEW(m_text), &iter, 0.0, FALSE, 0.0, 1.0 );
 594 #else // GTK 1.x
 595         // After cursor movements, gtk_text_get_point() is wrong by one.
 596         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 597
 598         // always use m_defaultStyle, even if it is empty as otherwise
 599         // resetting the style and appending some more text wouldn't work: if
 600         // we don't specify the style explicitly, the old style would be used
 601         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 602         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 603
 604         // Bring editable's cursor back uptodate.
 605         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 606 #endif // GTK 1.x/2.0
 607     }
 608     else // single line
 609     {
 610         // First remove the selection if there is one
 611         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 612
 613         // This moves the cursor pos to behind the inserted text.
 614         gint len = GET_EDITABLE_POS(m_text);
 615
 616 #ifdef __WXGTK20__
 617
 618 #if wxUSE_UNICODE
 619         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 620 #else
 621         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 622 #endif
 623         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 624
 625 #else
 626         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 627 #endif
 628
 629         // Bring entry's cursor uptodate.
 630         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 631     }
 632
 633     m_modified = TRUE;
 634 }
 635
 636 void wxTextCtrl::AppendText( const wxString &text )
 637 {
 638     SetInsertionPointEnd();
 639     WriteText( text );
 640 }
 641
 642 wxString wxTextCtrl::GetLineText( long lineNo ) const
 643 {
 644     if (m_windowStyle & wxTE_MULTILINE)
 645     {
 646 #ifndef __WXGTK20__
 647         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 648         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 649
 650         if (text)
 651         {
 652             wxString buf(wxT(""));
 653             long i;
 654             int currentLine = 0;
 655             for (i = 0; currentLine != lineNo && text[i]; i++ )
 656                 if (text[i] == '\n')
 657             currentLine++;
 658             // Now get the text
 659             int j;
 660             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 661                 buf += text[i];
 662
 663             g_free( text );
 664             return buf;
 665         }
 666         else
 667 #endif
 668         {
 669             return wxEmptyString;
 670         }
 671     }
 672     else
 673     {
 674         if (lineNo == 0) return GetValue();
 675         return wxEmptyString;
 676     }
 677 }
 678
 679 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 680 {
 681   /* If you implement this, don't forget to update the documentation!
 682    * (file docs/latex/wx/text.tex) */
 683     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 684 }
 685
 686 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 687 {
 688     if ( m_windowStyle & wxTE_MULTILINE )
 689     {
 690         wxString text = GetValue();
 691
 692         // cast to prevent warning. But pos really should've been unsigned.
 693         if( (unsigned long)pos > text.Len()  )
 694             return FALSE;
 695
 696         *x=0;   // First Col
 697         *y=0;   // First Line
 698
 699         const wxChar* stop = text.c_str() + pos;
 700         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 701         {
 702             if (*p == wxT('\n'))
 703             {
 704                 (*y)++;
 705                 *x=0;
 706             }
 707             else
 708                 (*x)++;
 709         }
 710     }
 711     else // single line control
 712     {
 713         if ( pos <= GTK_ENTRY(m_text)->text_length )
 714         {
 715             *y = 0;
 716             *x = pos;
 717         }
 718         else
 719         {
 720             // index out of bounds
 721             return FALSE;
 722         }
 723     }
 724
 725     return TRUE;
 726 }
 727
 728 long wxTextCtrl::XYToPosition(long x, long y ) const
 729 {
 730     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 731
 732     long pos=0;
 733     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 734
 735     pos += x;
 736     return pos;
 737 }
 738
 739 int wxTextCtrl::GetLineLength(long lineNo) const
 740 {
 741     wxString str = GetLineText (lineNo);
 742     return (int) str.Length();
 743 }
 744
 745 int wxTextCtrl::GetNumberOfLines() const
 746 {
 747     if (m_windowStyle & wxTE_MULTILINE)
 748     {
 749 #ifdef __WXGTK20__
 750         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 751
 752         return gtk_text_buffer_get_line_count( buffer );
 753 #else
 754         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 755         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 756
 757         if (text)
 758         {
 759             int currentLine = 0;
 760             for (int i = 0; i < len; i++ )
 761             {
 762                 if (text[i] == '\n')
 763                     currentLine++;
 764             }
 765             g_free( text );
 766
 767             // currentLine is 0 based, add 1 to get number of lines
 768             return currentLine + 1;
 769         }
 770         else
 771         {
 772             return 0;
 773         }
 774 #endif
 775     }
 776     else
 777     {
 778         return 1;
 779     }
 780 }
 781
 782 void wxTextCtrl::SetInsertionPoint( long pos )
 783 {
 784     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 785
 786     if (m_windowStyle & wxTE_MULTILINE)
 787     {
 788 #ifdef __WXGTK20__
 789         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 790         GtkTextIter iter;
 791         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 792         gtk_text_buffer_place_cursor( text_buffer, &iter );
 793 #else
 794         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 795           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 796
 797         /* we fake a set_point by inserting and deleting. as the user
 798            isn't supposed to get to know about this non-sense, we
 799            disconnect so that no events are sent to the user program. */
 800
 801         gint tmp = (gint)pos;
 802         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 803         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 804
 805         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 806           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 807
 808         // bring editable's cursor uptodate. Bug in GTK.
 809         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 810 #endif
 811     }
 812     else
 813     {
 814         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 815
 816         // Bring editable's cursor uptodate. Bug in GTK.
 817         SET_EDITABLE_POS(m_text, (guint32)pos);
 818     }
 819 }
 820
 821 void wxTextCtrl::SetInsertionPointEnd()
 822 {
 823     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 824
 825     if (m_windowStyle & wxTE_MULTILINE)
 826     {
 827 #ifdef __WXGTK20__
 828         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 829         GtkTextIter end;
 830         gtk_text_buffer_get_end_iter( text_buffer, &end );
 831         gtk_text_buffer_place_cursor( text_buffer, &end );
 832 #else
 833         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 834 #endif
 835     }
 836     else
 837     {
 838         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 839     }
 840 }
 841
 842 void wxTextCtrl::SetEditable( bool editable )
 843 {
 844     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 845
 846     if (m_windowStyle & wxTE_MULTILINE)
 847     {
 848 #ifdef __WXGTK20__
 849         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 850 #else
 851         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 852 #endif
 853     }
 854     else
 855     {
 856         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 857     }
 858 }
 859
 860 bool wxTextCtrl::Enable( bool enable )
 861 {
 862     if (!wxWindowBase::Enable(enable))
 863     {
 864         // nothing to do
 865         return FALSE;
 866     }
 867
 868     if (m_windowStyle & wxTE_MULTILINE)
 869     {
 870 #ifdef __WXGTK20__
 871         SetEditable( enable );
 872 #else
 873         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 874         OnParentEnable(enable);
 875 #endif
 876     }
 877     else
 878     {
 879         gtk_widget_set_sensitive( m_text, enable );
 880     }
 881
 882     return TRUE;
 883 }
 884
 885 // wxGTK-specific: called recursively by Enable,
 886 // to give widgets an oppprtunity to correct their colours after they
 887 // have been changed by Enable
 888 void wxTextCtrl::OnParentEnable( bool enable )
 889 {
 890     // If we have a custom background colour, we use this colour in both
 891     // disabled and enabled mode, or we end up with a different colour under the
 892     // text.
 893     wxColour oldColour = GetBackgroundColour();
 894     if (oldColour.Ok())
 895     {
 896         // Need to set twice or it'll optimize the useful stuff out
 897         if (oldColour == * wxWHITE)
 898             SetBackgroundColour(*wxBLACK);
 899         else
 900             SetBackgroundColour(*wxWHITE);
 901         SetBackgroundColour(oldColour);
 902     }
 903 }
 904
 905 void wxTextCtrl::DiscardEdits()
 906 {
 907     m_modified = FALSE;
 908 }
 909
 910 // ----------------------------------------------------------------------------
 911 // max text length support
 912 // ----------------------------------------------------------------------------
 913
 914 void wxTextCtrl::IgnoreNextTextUpdate()
 915 {
 916     m_ignoreNextUpdate = TRUE;
 917 }
 918
 919 bool wxTextCtrl::IgnoreTextUpdate()
 920 {
 921     if ( m_ignoreNextUpdate )
 922     {
 923         m_ignoreNextUpdate = FALSE;
 924
 925         return TRUE;
 926     }
 927
 928     return FALSE;
 929 }
 930
 931 void wxTextCtrl::SetMaxLength(unsigned long len)
 932 {
 933     if ( !HasFlag(wxTE_MULTILINE) )
 934     {
 935         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 936
 937         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 938         // we had tried to enter more text than allowed by max text length and
 939         // the text wasn't really changed
 940         //
 941         // to detect this and generate TEXT_MAXLEN event instead of
 942         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 943         //
 944         // when max len is set to 0 we disconnect our handler as it means that
 945         // we shouldn't check anything any more
 946         if ( len )
 947         {
 948             gtk_signal_connect( GTK_OBJECT(m_text),
 949                                 "insert_text",
 950                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 951                                 (gpointer)this);
 952         }
 953         else // no checking
 954         {
 955             gtk_signal_disconnect_by_func
 956             (
 957                 GTK_OBJECT(m_text),
 958                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 959                 (gpointer)this
 960             );
 961         }
 962     }
 963 }
 964
 965 void wxTextCtrl::SetSelection( long from, long to )
 966 {
 967     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 968
 969     if (from == -1 && to == -1)
 970     {
 971         from = 0;
 972         to = GetValue().Length();
 973     }
 974
 975 #ifndef __WXGTK20__
 976     if ( (m_windowStyle & wxTE_MULTILINE) &&
 977          !GTK_TEXT(m_text)->line_start_cache )
 978     {
 979         // tell the programmer that it didn't work
 980         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 981         return;
 982     }
 983 #endif
 984
 985     if (m_windowStyle & wxTE_MULTILINE)
 986     {
 987 #ifdef __WXGTK20__
 988         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 989
 990         GtkTextIter fromi, toi;
 991         gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
 992         gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
 993
 994         gtk_text_buffer_place_cursor( buf, &toi );
 995         gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
 996 #else
 997         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 998 #endif
 999     }
1000     else
1001     {
1002         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1003     }
1004 }
1005
1006 void wxTextCtrl::ShowPosition( long pos )
1007 {
1008 #ifndef __WXGTK20__
1009     if (m_windowStyle & wxTE_MULTILINE)
1010     {
1011         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1012         float totalLines =  (float) GetNumberOfLines();
1013         long posX;
1014         long posY;
1015         PositionToXY(pos, &posX, &posY);
1016         float posLine = (float) posY;
1017         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1018         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1019     }
1020 #endif
1021 }
1022
1023 long wxTextCtrl::GetInsertionPoint() const
1024 {
1025     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1026
1027 #ifdef __WXGTK20__
1028     if (m_windowStyle & wxTE_MULTILINE)
1029     {
1030         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1031
1032         // There is no direct accessor for the cursor, but
1033         // internally, the cursor is the "mark" called
1034         // "insert" in the text view's btree structure.
1035
1036         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1037         GtkTextIter cursor;
1038         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1039
1040         return gtk_text_iter_get_offset( &cursor );
1041     }
1042     else
1043 #endif
1044     {
1045     return (long) GET_EDITABLE_POS(m_text);
1046     }
1047 }
1048
1049 long wxTextCtrl::GetLastPosition() const
1050 {
1051     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1052
1053     int pos = 0;
1054
1055     if (m_windowStyle & wxTE_MULTILINE)
1056     {
1057 #ifdef __WXGTK20__
1058         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1059         GtkTextIter end;
1060         gtk_text_buffer_get_end_iter( text_buffer, &end );
1061
1062         pos = gtk_text_iter_get_offset( &end );
1063 #else
1064         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1065 #endif
1066     }
1067     else
1068     {
1069         pos = GTK_ENTRY(m_text)->text_length;
1070     }
1071
1072     return (long)pos;
1073 }
1074
1075 void wxTextCtrl::Remove( long from, long to )
1076 {
1077     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1078
1079 #ifdef __WXGTK20__
1080     if (m_windowStyle & wxTE_MULTILINE)
1081     {
1082         GtkTextBuffer *
1083             text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1084
1085         GtkTextIter fromi, toi;
1086         gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1087         gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1088
1089         gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1090     }
1091     else // single line
1092 #endif
1093     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1094 }
1095
1096 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1097 {
1098     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1099
1100     Remove( from, to );
1101
1102     if (!value.IsEmpty())
1103     {
1104 #ifdef __WXGTK20__
1105         SetInsertionPoint( from );
1106         WriteText( value );
1107 #else // GTK 1.x
1108         gint pos = (gint)from;
1109 #if wxUSE_UNICODE
1110         wxWX2MBbuf buf = value.mbc_str();
1111         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1112 #else
1113         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1114 #endif // wxUSE_UNICODE
1115 #endif // GTK 1.x/2.x
1116     }
1117 }
1118
1119 void wxTextCtrl::Cut()
1120 {
1121     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1122
1123 #ifndef __WXGTK20__
1124     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1125 #endif
1126 }
1127
1128 void wxTextCtrl::Copy()
1129 {
1130     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1131
1132 #ifndef __WXGTK20__
1133     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1134 #endif
1135 }
1136
1137 void wxTextCtrl::Paste()
1138 {
1139     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1140
1141 #ifndef __WXGTK20__
1142     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1143 #endif
1144 }
1145
1146 // Undo/redo
1147 void wxTextCtrl::Undo()
1148 {
1149     // TODO
1150     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1151 }
1152
1153 void wxTextCtrl::Redo()
1154 {
1155     // TODO
1156     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1157 }
1158
1159 bool wxTextCtrl::CanUndo() const
1160 {
1161     // TODO
1162     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1163     return FALSE;
1164 }
1165
1166 bool wxTextCtrl::CanRedo() const
1167 {
1168     // TODO
1169     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1170     return FALSE;
1171 }
1172
1173 // If the return values from and to are the same, there is no
1174 // selection.
1175 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1176 {
1177     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1178
1179     gint from = -1;
1180     gint to = -1;
1181     bool haveSelection = FALSE;
1182
1183 #ifdef __WXGTK20__
1184      if (m_windowStyle & wxTE_MULTILINE)
1185      {
1186          GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1187          GtkTextIter ifrom, ito;
1188          if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1189          {
1190              haveSelection = TRUE;
1191              from = gtk_text_iter_get_offset(&ifrom);
1192              to = gtk_text_iter_get_offset(&ito);
1193          }
1194      }
1195      else  // not multi-line
1196      {
1197          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1198                                                  &from, &to) )
1199          {
1200              haveSelection = TRUE;
1201          }
1202      }
1203 #else //  not GTK2
1204      if ( (GTK_EDITABLE(m_text)->has_selection) )
1205      {
1206          haveSelection = TRUE;
1207          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1208          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1209      }
1210 #endif
1211
1212      if (! haveSelection )
1213           from = to = GetInsertionPoint();
1214
1215      if ( from > to )
1216      {
1217          // exchange them to be compatible with wxMSW
1218          gint tmp = from;
1219          from = to;
1220          to = tmp;
1221      }
1222
1223     if ( fromOut )
1224         *fromOut = from;
1225     if ( toOut )
1226         *toOut = to;
1227 }
1228
1229
1230 bool wxTextCtrl::IsEditable() const
1231 {
1232     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1233
1234 #ifdef __WXGTK20__
1235     if (m_windowStyle & wxTE_MULTILINE)
1236     {
1237         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1238     }
1239     else
1240     {
1241         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1242     }
1243 #else
1244     return GTK_EDITABLE(m_text)->editable;
1245 #endif
1246 }
1247
1248 bool wxTextCtrl::IsModified() const
1249 {
1250     return m_modified;
1251 }
1252
1253 void wxTextCtrl::Clear()
1254 {
1255     SetValue( wxT("") );
1256 }
1257
1258 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1259 {
1260     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1261
1262     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1263     {
1264         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1265         event.SetEventObject(this);
1266         event.SetString(GetValue());
1267         if (GetEventHandler()->ProcessEvent(event)) return;
1268     }
1269
1270     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1271     {
1272         // This will invoke the dialog default action, such
1273         // as the clicking the default button.
1274
1275         wxWindow *top_frame = m_parent;
1276         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1277             top_frame = top_frame->GetParent();
1278
1279         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1280         {
1281             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1282
1283             if (window->default_widget)
1284             {
1285                 gtk_widget_activate (window->default_widget);
1286                 return;
1287             }
1288         }
1289     }
1290
1291     key_event.Skip();
1292 }
1293
1294 GtkWidget* wxTextCtrl::GetConnectWidget()
1295 {
1296     return GTK_WIDGET(m_text);
1297 }
1298
1299 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1300 {
1301     if (m_windowStyle & wxTE_MULTILINE)
1302     {
1303 #ifdef __WXGTK20__
1304         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1305 #else
1306         return (window == GTK_TEXT(m_text)->text_area);
1307 #endif
1308     }
1309     else
1310     {
1311         return (window == GTK_ENTRY(m_text)->text_area);
1312     }
1313 }
1314
1315 // the font will change for subsequent text insertiongs
1316 bool wxTextCtrl::SetFont( const wxFont &font )
1317 {
1318     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1319
1320     if ( !wxTextCtrlBase::SetFont(font) )
1321     {
1322         // font didn't change, nothing to do
1323         return FALSE;
1324     }
1325
1326     if ( m_windowStyle & wxTE_MULTILINE )
1327     {
1328         m_updateFont = TRUE;
1329
1330         m_defaultStyle.SetFont(font);
1331
1332         ChangeFontGlobally();
1333     }
1334
1335     return TRUE;
1336 }
1337
1338 void wxTextCtrl::ChangeFontGlobally()
1339 {
1340     // this method is very inefficient and hence should be called as rarely as
1341     // possible!
1342     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1343                   _T("shouldn't be called for single line controls") );
1344
1345     wxString value = GetValue();
1346     if ( !value.IsEmpty() )
1347     {
1348         m_updateFont = FALSE;
1349
1350         Clear();
1351         AppendText(value);
1352     }
1353 }
1354
1355 void wxTextCtrl::UpdateFontIfNeeded()
1356 {
1357     if ( m_updateFont )
1358         ChangeFontGlobally();
1359 }
1360
1361 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1362 {
1363     if ( !wxControl::SetForegroundColour(colour) )
1364         return FALSE;
1365
1366     // update default fg colour too
1367     m_defaultStyle.SetTextColour(colour);
1368
1369     return TRUE;
1370 }
1371
1372 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1373 {
1374     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1375
1376     if ( !wxControl::SetBackgroundColour( colour ) )
1377         return FALSE;
1378
1379     if (!m_widget->window)
1380         return FALSE;
1381
1382     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1383     if (sysbg.Red() == colour.Red() &&
1384         sysbg.Green() == colour.Green() &&
1385         sysbg.Blue() == colour.Blue())
1386     {
1387         return FALSE; // FIXME or TRUE?
1388     }
1389
1390     if (!m_backgroundColour.Ok())
1391         return FALSE;
1392
1393     if (m_windowStyle & wxTE_MULTILINE)
1394     {
1395 #ifndef __WXGTK20__
1396         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1397         if (!window)
1398             return FALSE;
1399         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1400         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1401         gdk_window_clear( window );
1402 #endif
1403     }
1404
1405     // change active background color too
1406     m_defaultStyle.SetBackgroundColour( colour );
1407
1408     return TRUE;
1409 }
1410
1411 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1412 {
1413     if ( m_windowStyle & wxTE_MULTILINE )
1414     {
1415         if ( style.IsDefault() )
1416         {
1417             // nothing to do
1418             return TRUE;
1419         }
1420 #ifdef __WXGTK20__
1421         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1422         gint l = gtk_text_buffer_get_char_count( text_buffer );
1423
1424         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1425                      _T("invalid range in wxTextCtrl::SetStyle") );
1426
1427         GtkTextIter starti, endi;
1428         gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1429         gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1430
1431         // use the attributes from style which are set in it and fall back
1432         // first to the default style and then to the text control default
1433         // colours for the others
1434         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1435
1436         PangoFontDescription *font_description = attr.HasFont()
1437                              ? attr.GetFont().GetNativeFontInfo()->description
1438                              : NULL;
1439
1440         GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1441                                                : NULL;
1442
1443         GdkColor *colBg = attr.HasBackgroundColour()
1444                             ? attr.GetBackgroundColour().GetColor()
1445                             : NULL;
1446
1447         GtkTextTag *tag;
1448         tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1449                                          "foreground-gdk", colFg,
1450                                          "background-gdk", colBg, NULL );
1451         gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1452
1453          return TRUE;
1454 #else
1455         // VERY dirty way to do that - removes the required text and re-adds it
1456         // with styling (FIXME)
1457
1458         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1459
1460         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1461                      _T("invalid range in wxTextCtrl::SetStyle") );
1462
1463         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1464         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1465         wxString tmp(text,*wxConvCurrent);
1466         g_free( text );
1467
1468         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1469         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1470
1471 #if wxUSE_UNICODE
1472         wxWX2MBbuf buf = tmp.mbc_str();
1473         const char *txt = buf;
1474         size_t txtlen = strlen(buf);
1475 #else
1476         const char *txt = tmp;
1477         size_t txtlen = tmp.length();
1478 #endif
1479
1480         // use the attributes from style which are set in it and fall back
1481         // first to the default style and then to the text control default
1482         // colours for the others
1483         wxGtkTextInsert(m_text,
1484                         wxTextAttr::Combine(style, m_defaultStyle, this),
1485                         txt,
1486                         txtlen);
1487
1488         /* does not seem to help under GTK+ 1.2 !!!
1489         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1490         SetInsertionPoint( old_pos );
1491 #endif
1492         return TRUE;
1493     }
1494     else // singe line
1495     {
1496         // cannot do this for GTK+'s Entry widget
1497         return FALSE;
1498     }
1499 }
1500
1501 void wxTextCtrl::ApplyWidgetStyle()
1502 {
1503     if (m_windowStyle & wxTE_MULTILINE)
1504     {
1505         // how ?
1506     }
1507     else
1508     {
1509         SetWidgetStyle();
1510         gtk_widget_set_style( m_text, m_widgetStyle );
1511     }
1512 }
1513
1514 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1515 {
1516     Cut();
1517 }
1518
1519 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1520 {
1521     Copy();
1522 }
1523
1524 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1525 {
1526     Paste();
1527 }
1528
1529 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1530 {
1531     Undo();
1532 }
1533
1534 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1535 {
1536     Redo();
1537 }
1538
1539 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1540 {
1541     event.Enable( CanCut() );
1542 }
1543
1544 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1545 {
1546     event.Enable( CanCopy() );
1547 }
1548
1549 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1550 {
1551     event.Enable( CanPaste() );
1552 }
1553
1554 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1555 {
1556     event.Enable( CanUndo() );
1557 }
1558
1559 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1560 {
1561     event.Enable( CanRedo() );
1562 }
1563
1564 void wxTextCtrl::OnInternalIdle()
1565 {
1566     wxCursor cursor = m_cursor;
1567     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1568
1569     if (cursor.Ok())
1570     {
1571 #ifndef __WXGTK20__
1572         GdkWindow *window = (GdkWindow*) NULL;
1573         if (HasFlag(wxTE_MULTILINE))
1574             window = GTK_TEXT(m_text)->text_area;
1575         else
1576             window = GTK_ENTRY(m_text)->text_area;
1577
1578         if (window)
1579             gdk_window_set_cursor( window, cursor.GetCursor() );
1580
1581         if (!g_globalCursor.Ok())
1582             cursor = *wxSTANDARD_CURSOR;
1583
1584         window = m_widget->window;
1585         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1586             gdk_window_set_cursor( window, cursor.GetCursor() );
1587 #endif
1588     }
1589
1590     if (g_delayedFocus == this)
1591     {
1592         if (GTK_WIDGET_REALIZED(m_widget))
1593         {
1594             gtk_widget_grab_focus( m_widget );
1595             g_delayedFocus = NULL;
1596         }
1597     }
1598
1599     if (wxUpdateUIEvent::CanUpdate(this))
1600         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1601 }
1602
1603 wxSize wxTextCtrl::DoGetBestSize() const
1604 {
1605     // FIXME should be different for multi-line controls...
1606     wxSize ret( wxControl::DoGetBestSize() );
1607     return wxSize(80, ret.y);
1608 }
1609
1610 // ----------------------------------------------------------------------------
1611 // freeze/thaw
1612 // ----------------------------------------------------------------------------
1613
1614 void wxTextCtrl::Freeze()
1615 {
1616 #ifndef __WXGTK20__
1617     if ( HasFlag(wxTE_MULTILINE) )
1618     {
1619         gtk_text_freeze(GTK_TEXT(m_text));
1620     }
1621 #endif
1622 }
1623
1624 void wxTextCtrl::Thaw()
1625 {
1626 #ifndef __WXGTK20__
1627     if ( HasFlag(wxTE_MULTILINE) )
1628     {
1629         GTK_TEXT(m_text)->vadj->value = 0.0;
1630
1631         gtk_text_thaw(GTK_TEXT(m_text));
1632     }
1633 #endif
1634 }
1635
1636 // ----------------------------------------------------------------------------
1637 // scrolling
1638 // ----------------------------------------------------------------------------
1639
1640 GtkAdjustment *wxTextCtrl::GetVAdj() const
1641 {
1642 #ifdef __WXGTK20__
1643     return NULL;
1644 #else
1645     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1646 #endif
1647 }
1648
1649 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1650 {
1651 #ifndef __WXGTK20__
1652     float value = adj->value + diff;
1653
1654     if ( value < 0 )
1655         value = 0;
1656
1657     float upper = adj->upper - adj->page_size;
1658     if ( value > upper )
1659         value = upper;
1660
1661     // did we noticeably change the scroll position?
1662     if ( fabs(adj->value - value) < 0.2 )
1663     {
1664         // well, this is what Robert does in wxScrollBar, so it must be good...
1665         return FALSE;
1666     }
1667
1668     adj->value = value;
1669
1670     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1671
1672 #endif
1673     return TRUE;
1674 }
1675
1676 bool wxTextCtrl::ScrollLines(int lines)
1677 {
1678 #ifdef __WXGTK20__
1679     return FALSE;
1680 #else
1681     GtkAdjustment *adj = GetVAdj();
1682     if ( !adj )
1683         return FALSE;
1684
1685     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1686     static const int KEY_SCROLL_PIXELS = 10;
1687
1688     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1689 #endif
1690 }
1691
1692 bool wxTextCtrl::ScrollPages(int pages)
1693 {
1694 #ifdef __WXGTK20__
1695     return FALSE;
1696 #else
1697     GtkAdjustment *adj = GetVAdj();
1698     if ( !adj )
1699         return FALSE;
1700
1701     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1702 #endif
1703 }
1704