src/gtk1/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 #ifndef __WXGTK20__
 159     win->UpdateFontIfNeeded();
 160 #endif // !__WXGTK20__
 161
 162     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 163     event.SetEventObject( win );
 164     event.SetString( win->GetValue() );
 165     win->GetEventHandler()->ProcessEvent( event );
 166 }
 167
 168 //-----------------------------------------------------------------------------
 169 // "changed" from vertical scrollbar
 170 //-----------------------------------------------------------------------------
 171
 172 #ifndef __WXGTK20__
 173 static void
 174 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 175 {
 176     if (!win->m_hasVMT) return;
 177
 178     if (g_isIdle)
 179         wxapp_install_idle_handler();
 180
 181     win->CalculateScrollbar();
 182 }
 183 #endif
 184
 185 // ----------------------------------------------------------------------------
 186 // redraw callback for multiline text
 187 // ----------------------------------------------------------------------------
 188
 189 #ifndef __WXGTK20__
 190
 191 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 192 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 193 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 194 // don't do anything if we're inside wxYield()
 195
 196 extern bool wxIsInsideYield;
 197
 198 extern "C" {
 199     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 200 }
 201
 202 static GtkDrawCallback gs_gtk_text_draw = NULL;
 203
 204 extern "C"
 205 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 206 {
 207     if ( !wxIsInsideYield )
 208     {
 209         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 210                      _T("infinite recursion in wxgtk_text_draw aborted") );
 211
 212         gs_gtk_text_draw(widget, rect);
 213     }
 214 }
 215
 216 #endif // __WXGTK20__
 217
 218 //-----------------------------------------------------------------------------
 219 //  wxTextCtrl
 220 //-----------------------------------------------------------------------------
 221
 222 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 223
 224 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 225     EVT_CHAR(wxTextCtrl::OnChar)
 226
 227     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 228     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 229     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 230     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 231     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 232
 233     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 234     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 235     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 236     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 237     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 238 END_EVENT_TABLE()
 239
 240 void wxTextCtrl::Init()
 241 {
 242     m_ignoreNextUpdate =
 243     m_modified = FALSE;
 244     SetUpdateFont(FALSE);
 245     m_text =
 246     m_vScrollbar = (GtkWidget *)NULL;
 247 }
 248
 249 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 250                         wxWindowID id,
 251                         const wxString &value,
 252                         const wxPoint &pos,
 253                         const wxSize &size,
 254                         long style,
 255                         const wxValidator& validator,
 256                         const wxString &name )
 257 {
 258     Init();
 259
 260     Create( parent, id, value, pos, size, style, validator, name );
 261 }
 262
 263 bool wxTextCtrl::Create( wxWindow *parent,
 264                          wxWindowID id,
 265                          const wxString &value,
 266                          const wxPoint &pos,
 267                          const wxSize &size,
 268                          long style,
 269                          const wxValidator& validator,
 270                          const wxString &name )
 271 {
 272     m_needParent = TRUE;
 273     m_acceptsFocus = TRUE;
 274
 275     if (!PreCreation( parent, pos, size ) ||
 276         !CreateBase( parent, id, pos, size, style, validator, name ))
 277     {
 278         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 279         return FALSE;
 280     }
 281
 282
 283     m_vScrollbarVisible = FALSE;
 284
 285     bool multi_line = (style & wxTE_MULTILINE) != 0;
 286
 287 #ifdef __WXGTK20__
 288     GtkTextBuffer *buffer = NULL;
 289 #endif
 290
 291     if (multi_line)
 292     {
 293 #ifdef __WXGTK20__
 294         // Create view
 295         m_text = gtk_text_view_new();
 296
 297         buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 298
 299         // create scrolled window
 300         m_widget = gtk_scrolled_window_new( NULL, NULL );
 301         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 302                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 303
 304         // Insert view into scrolled window
 305         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 306
 307         // Global settings which can be overridden by tags, I guess.
 308         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 309             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 310         else
 311             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 312
 313         if (!HasFlag(wxNO_BORDER))
 314             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 315
 316         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 317 #else
 318         // create our control ...
 319         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 320
 321         // ... and put into the upper left hand corner of the table
 322         bool bHasHScrollbar = FALSE;
 323         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 324         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 325         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 326                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 327                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 328                        0, 0);
 329
 330         // always wrap words
 331         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 332
 333         // finally, put the vertical scrollbar in the upper right corner
 334         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 335         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 336         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 337                      GTK_FILL,
 338                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 339                      0, 0);
 340 #endif
 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     m_focusWidget = m_text;
 352
 353     PostCreation(size);
 354
 355     if (multi_line)
 356         gtk_widget_show(m_text);
 357
 358 #ifndef __WXGTK20__
 359     if (multi_line)
 360     {
 361         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 362           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 363
 364         // only initialize gs_gtk_text_draw once, starting from the next the
 365         // klass::draw will already be wxgtk_text_draw
 366         if ( !gs_gtk_text_draw )
 367         {
 368             GtkDrawCallback&
 369                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 370
 371             gs_gtk_text_draw = draw;
 372
 373             draw = wxgtk_text_draw;
 374         }
 375     }
 376 #endif // GTK+ 1.x
 377
 378     if (!value.IsEmpty())
 379     {
 380 #ifdef __WXGTK20__
 381         SetValue( value );
 382 #else
 383
 384 #if !GTK_CHECK_VERSION(1, 2, 0)
 385         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 386         // gtk_editable_insert_text()
 387         gtk_widget_realize(m_text);
 388 #endif // GTK 1.0
 389
 390         gint tmp = 0;
 391 #if wxUSE_UNICODE
 392         wxWX2MBbuf val = value.mbc_str();
 393         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 394 #else
 395         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 396 #endif
 397
 398         if (multi_line)
 399         {
 400             // Bring editable's cursor uptodate. Bug in GTK.
 401             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 402         }
 403
 404 #endif
 405     }
 406
 407     if (style & wxTE_PASSWORD)
 408     {
 409         if (!multi_line)
 410             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 411     }
 412
 413     if (style & wxTE_READONLY)
 414     {
 415         if (!multi_line)
 416             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 417 #ifdef __WXGTK20__
 418         else
 419             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 420 #else
 421     }
 422     else
 423     {
 424         if (multi_line)
 425             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 426 #endif
 427     }
 428
 429 #ifdef __WXGTK20__
 430     if (multi_line)
 431     {
 432         if (style & wxTE_RIGHT)
 433             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 434         else if (style & wxTE_CENTRE)
 435             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 436         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 437     }
 438     // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 439 #if GTK_CHECK_VERSION(2, 3, 5)
 440     else
 441     {
 442         if (style & wxTE_RIGHT)
 443             gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 444         else if (style & wxTE_CENTRE)
 445             gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 446     }
 447 #endif // gtk+-2.3.5
 448 #endif // __WXGTK20__
 449
 450     // We want to be notified about text changes.
 451 #ifdef __WXGTK20__
 452     if (multi_line)
 453     {
 454         g_signal_connect( G_OBJECT(buffer), "changed",
 455             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 456     }
 457     else
 458 #endif
 459
 460     {
 461         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 462             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 463     }
 464
 465     m_cursor = wxCursor( wxCURSOR_IBEAM );
 466
 467     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 468     SetDefaultStyle( attrDef );
 469
 470     return TRUE;
 471 }
 472
 473
 474 void wxTextCtrl::CalculateScrollbar()
 475 {
 476 #ifndef __WXGTK20__
 477     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 478
 479     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 480
 481     if (adj->upper - adj->page_size < 0.8)
 482     {
 483         if (m_vScrollbarVisible)
 484         {
 485             gtk_widget_hide( m_vScrollbar );
 486             m_vScrollbarVisible = FALSE;
 487         }
 488     }
 489     else
 490     {
 491         if (!m_vScrollbarVisible)
 492         {
 493             gtk_widget_show( m_vScrollbar );
 494             m_vScrollbarVisible = TRUE;
 495         }
 496     }
 497 #endif
 498 }
 499
 500 wxString wxTextCtrl::GetValue() const
 501 {
 502     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 503
 504     wxString tmp;
 505     if (m_windowStyle & wxTE_MULTILINE)
 506     {
 507 #ifdef __WXGTK20__
 508         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 509
 510         GtkTextIter start;
 511         gtk_text_buffer_get_start_iter( text_buffer, &start );
 512         GtkTextIter end;
 513         gtk_text_buffer_get_end_iter( text_buffer, &end );
 514         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 515
 516 #if wxUSE_UNICODE
 517         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 518 #else
 519         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 520 #endif
 521         tmp = buffer;
 522
 523         g_free( text );
 524 #else
 525         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 526         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 527         tmp = text;
 528         g_free( text );
 529 #endif
 530     }
 531     else
 532     {
 533         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 534     }
 535
 536     return tmp;
 537 }
 538
 539 void wxTextCtrl::SetValue( const wxString &value )
 540 {
 541     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 542
 543     if (m_windowStyle & wxTE_MULTILINE)
 544     {
 545 #ifdef __WXGTK20__
 546
 547 #if wxUSE_UNICODE
 548         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 549 #else
 550         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 551 #endif
 552         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 553         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 554
 555 #else
 556         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 557         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 558         len = 0;
 559         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 560 #endif
 561     }
 562     else
 563     {
 564         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 565     }
 566
 567     // GRG, Jun/2000: Changed this after a lot of discussion in
 568     //   the lists. wxWidgets 2.2 will have a set of flags to
 569     //   customize this behaviour.
 570     SetInsertionPoint(0);
 571
 572     m_modified = FALSE;
 573 }
 574
 575 void wxTextCtrl::WriteText( const wxString &text )
 576 {
 577     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 578
 579     if ( text.empty() )
 580         return;
 581
 582     // gtk_text_changed_callback() will set m_modified to true but m_modified
 583     // shouldn't be changed by the program writing to the text control itself,
 584     // so save the old value and restore when we're done
 585     bool oldModified = m_modified;
 586
 587     if ( m_windowStyle & wxTE_MULTILINE )
 588     {
 589 #ifdef __WXGTK20__
 590
 591 #if wxUSE_UNICODE
 592         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 593 #else
 594         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 595 #endif
 596         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 597
 598         // TODO: Call whatever is needed to delete the selection.
 599         wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
 600
 601         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 602         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 603         if ( adj->value == adj->upper - adj->page_size )
 604         {
 605             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 606                     gtk_text_buffer_get_insert( text_buffer ), 0.0, FALSE, 0.0, 1.0 );
 607         }
 608 #else // GTK 1.x
 609         // After cursor movements, gtk_text_get_point() is wrong by one.
 610         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 611
 612         // always use m_defaultStyle, even if it is empty as otherwise
 613         // resetting the style and appending some more text wouldn't work: if
 614         // we don't specify the style explicitly, the old style would be used
 615         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 616         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 617
 618         // we called wxGtkTextInsert with correct font, no need to do anything
 619         // in UpdateFontIfNeeded() any longer
 620         if ( !text.empty() )
 621         {
 622             SetUpdateFont(FALSE);
 623         }
 624
 625         // Bring editable's cursor back uptodate.
 626         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 627 #endif // GTK 1.x/2.0
 628     }
 629     else // single line
 630     {
 631         // First remove the selection if there is one
 632         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 633
 634         // This moves the cursor pos to behind the inserted text.
 635         gint len = GET_EDITABLE_POS(m_text);
 636
 637 #ifdef __WXGTK20__
 638
 639 #if wxUSE_UNICODE
 640         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 641 #else
 642         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 643 #endif
 644         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 645
 646 #else
 647         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 648 #endif
 649
 650         // Bring entry's cursor uptodate.
 651         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 652     }
 653
 654     m_modified = oldModified;
 655 }
 656
 657 void wxTextCtrl::AppendText( const wxString &text )
 658 {
 659     SetInsertionPointEnd();
 660     WriteText( text );
 661 }
 662
 663 wxString wxTextCtrl::GetLineText( long lineNo ) const
 664 {
 665     if (m_windowStyle & wxTE_MULTILINE)
 666     {
 667 #ifndef __WXGTK20__
 668         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 669         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 670
 671         if (text)
 672         {
 673             wxString buf(wxT(""));
 674             long i;
 675             int currentLine = 0;
 676             for (i = 0; currentLine != lineNo && text[i]; i++ )
 677                 if (text[i] == '\n')
 678             currentLine++;
 679             // Now get the text
 680             int j;
 681             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 682                 buf += text[i];
 683
 684             g_free( text );
 685             return buf;
 686         }
 687         else
 688         {
 689             return wxEmptyString;
 690         }
 691 #else
 692         GtkTextBuffer *text_buffer;
 693         text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(m_text));
 694         GtkTextIter line;
 695         gtk_text_buffer_get_iter_at_line(text_buffer,&line,lineNo);
 696         GtkTextIter end;
 697         gtk_text_buffer_get_end_iter(text_buffer,&end );
 698         gchar *text = gtk_text_buffer_get_text(text_buffer,&line,&end,TRUE);
 699         wxString result(wxGTK_CONV_BACK(text));
 700         g_free(text);
 701         return result.BeforeFirst(wxT('\n'));
 702 #endif
 703     }
 704     else
 705     {
 706         if (lineNo == 0) return GetValue();
 707         return wxEmptyString;
 708     }
 709 }
 710
 711 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 712 {
 713   /* If you implement this, don't forget to update the documentation!
 714    * (file docs/latex/wx/text.tex) */
 715     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 716 }
 717
 718 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 719 {
 720     if ( m_windowStyle & wxTE_MULTILINE )
 721     {
 722         wxString text = GetValue();
 723
 724         // cast to prevent warning. But pos really should've been unsigned.
 725         if( (unsigned long)pos > text.Len()  )
 726             return FALSE;
 727
 728         *x=0;   // First Col
 729         *y=0;   // First Line
 730
 731         const wxChar* stop = text.c_str() + pos;
 732         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 733         {
 734             if (*p == wxT('\n'))
 735             {
 736                 (*y)++;
 737                 *x=0;
 738             }
 739             else
 740                 (*x)++;
 741         }
 742     }
 743     else // single line control
 744     {
 745         if ( pos <= GTK_ENTRY(m_text)->text_length )
 746         {
 747             *y = 0;
 748             *x = pos;
 749         }
 750         else
 751         {
 752             // index out of bounds
 753             return FALSE;
 754         }
 755     }
 756
 757     return TRUE;
 758 }
 759
 760 long wxTextCtrl::XYToPosition(long x, long y ) const
 761 {
 762     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 763
 764     long pos=0;
 765     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 766
 767     pos += x;
 768     return pos;
 769 }
 770
 771 int wxTextCtrl::GetLineLength(long lineNo) const
 772 {
 773     wxString str = GetLineText (lineNo);
 774     return (int) str.Length();
 775 }
 776
 777 int wxTextCtrl::GetNumberOfLines() const
 778 {
 779     if (m_windowStyle & wxTE_MULTILINE)
 780     {
 781 #ifdef __WXGTK20__
 782         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 783
 784         return gtk_text_buffer_get_line_count( buffer );
 785 #else
 786         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 787         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 788
 789         if (text)
 790         {
 791             int currentLine = 0;
 792             for (int i = 0; i < len; i++ )
 793             {
 794                 if (text[i] == '\n')
 795                     currentLine++;
 796             }
 797             g_free( text );
 798
 799             // currentLine is 0 based, add 1 to get number of lines
 800             return currentLine + 1;
 801         }
 802         else
 803         {
 804             return 0;
 805         }
 806 #endif
 807     }
 808     else
 809     {
 810         return 1;
 811     }
 812 }
 813
 814 void wxTextCtrl::SetInsertionPoint( long pos )
 815 {
 816     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 817
 818     if (m_windowStyle & wxTE_MULTILINE)
 819     {
 820 #ifdef __WXGTK20__
 821         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 822         GtkTextIter iter;
 823         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 824         gtk_text_buffer_place_cursor( text_buffer, &iter );
 825 #else
 826         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 827           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 828
 829         /* we fake a set_point by inserting and deleting. as the user
 830            isn't supposed to get to know about this non-sense, we
 831            disconnect so that no events are sent to the user program. */
 832
 833         gint tmp = (gint)pos;
 834         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 835         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 836
 837         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 838           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 839
 840         // bring editable's cursor uptodate. Bug in GTK.
 841         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 842 #endif
 843     }
 844     else
 845     {
 846         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 847
 848         // Bring editable's cursor uptodate. Bug in GTK.
 849         SET_EDITABLE_POS(m_text, (guint32)pos);
 850     }
 851 }
 852
 853 void wxTextCtrl::SetInsertionPointEnd()
 854 {
 855     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 856
 857     if (m_windowStyle & wxTE_MULTILINE)
 858     {
 859 #ifdef __WXGTK20__
 860         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 861         GtkTextIter end;
 862         gtk_text_buffer_get_end_iter( text_buffer, &end );
 863         gtk_text_buffer_place_cursor( text_buffer, &end );
 864 #else
 865         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 866 #endif
 867     }
 868     else
 869     {
 870         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 871     }
 872 }
 873
 874 void wxTextCtrl::SetEditable( bool editable )
 875 {
 876     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 877
 878     if (m_windowStyle & wxTE_MULTILINE)
 879     {
 880 #ifdef __WXGTK20__
 881         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 882 #else
 883         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 884 #endif
 885     }
 886     else
 887     {
 888         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 889     }
 890 }
 891
 892 bool wxTextCtrl::Enable( bool enable )
 893 {
 894     if (!wxWindowBase::Enable(enable))
 895     {
 896         // nothing to do
 897         return FALSE;
 898     }
 899
 900     if (m_windowStyle & wxTE_MULTILINE)
 901     {
 902 #ifdef __WXGTK20__
 903         SetEditable( enable );
 904 #else
 905         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 906         OnParentEnable(enable);
 907 #endif
 908     }
 909     else
 910     {
 911         gtk_widget_set_sensitive( m_text, enable );
 912     }
 913
 914     return TRUE;
 915 }
 916
 917 // wxGTK-specific: called recursively by Enable,
 918 // to give widgets an oppprtunity to correct their colours after they
 919 // have been changed by Enable
 920 void wxTextCtrl::OnParentEnable( bool enable )
 921 {
 922     // If we have a custom background colour, we use this colour in both
 923     // disabled and enabled mode, or we end up with a different colour under the
 924     // text.
 925     wxColour oldColour = GetBackgroundColour();
 926     if (oldColour.Ok())
 927     {
 928         // Need to set twice or it'll optimize the useful stuff out
 929         if (oldColour == * wxWHITE)
 930             SetBackgroundColour(*wxBLACK);
 931         else
 932             SetBackgroundColour(*wxWHITE);
 933         SetBackgroundColour(oldColour);
 934     }
 935 }
 936
 937 void wxTextCtrl::MarkDirty()
 938 {
 939     m_modified = TRUE;
 940 }
 941
 942 void wxTextCtrl::DiscardEdits()
 943 {
 944     m_modified = FALSE;
 945 }
 946
 947 // ----------------------------------------------------------------------------
 948 // max text length support
 949 // ----------------------------------------------------------------------------
 950
 951 void wxTextCtrl::IgnoreNextTextUpdate()
 952 {
 953     m_ignoreNextUpdate = TRUE;
 954 }
 955
 956 bool wxTextCtrl::IgnoreTextUpdate()
 957 {
 958     if ( m_ignoreNextUpdate )
 959     {
 960         m_ignoreNextUpdate = FALSE;
 961
 962         return TRUE;
 963     }
 964
 965     return FALSE;
 966 }
 967
 968 void wxTextCtrl::SetMaxLength(unsigned long len)
 969 {
 970     if ( !HasFlag(wxTE_MULTILINE) )
 971     {
 972         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 973
 974         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 975         // we had tried to enter more text than allowed by max text length and
 976         // the text wasn't really changed
 977         //
 978         // to detect this and generate TEXT_MAXLEN event instead of
 979         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 980         //
 981         // when max len is set to 0 we disconnect our handler as it means that
 982         // we shouldn't check anything any more
 983         if ( len )
 984         {
 985             gtk_signal_connect( GTK_OBJECT(m_text),
 986                                 "insert_text",
 987                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 988                                 (gpointer)this);
 989         }
 990         else // no checking
 991         {
 992             gtk_signal_disconnect_by_func
 993             (
 994                 GTK_OBJECT(m_text),
 995                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 996                 (gpointer)this
 997             );
 998         }
 999     }
1000 }
1001
1002 void wxTextCtrl::SetSelection( long from, long to )
1003 {
1004     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1005
1006     if (from == -1 && to == -1)
1007     {
1008         from = 0;
1009         to = GetValue().Length();
1010     }
1011
1012 #ifndef __WXGTK20__
1013     if ( (m_windowStyle & wxTE_MULTILINE) &&
1014          !GTK_TEXT(m_text)->line_start_cache )
1015     {
1016         // tell the programmer that it didn't work
1017         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1018         return;
1019     }
1020 #endif
1021
1022     if (m_windowStyle & wxTE_MULTILINE)
1023     {
1024 #ifdef __WXGTK20__
1025         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1026
1027         GtkTextIter fromi, toi;
1028         gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
1029         gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
1030
1031         gtk_text_buffer_place_cursor( buf, &toi );
1032         gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
1033 #else
1034         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1035 #endif
1036     }
1037     else
1038     {
1039         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1040     }
1041 }
1042
1043 void wxTextCtrl::ShowPosition( long pos )
1044 {
1045     if (m_windowStyle & wxTE_MULTILINE)
1046     {
1047 #ifdef __WXGTK20__
1048         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1049         GtkTextIter iter;
1050         gtk_text_buffer_get_start_iter( buf, &iter );
1051         gtk_text_iter_set_offset( &iter, pos );
1052         GtkTextMark *mark = gtk_text_buffer_create_mark( buf, NULL, &iter, TRUE );
1053         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1054 #else // GTK 1.x
1055         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1056         float totalLines =  (float) GetNumberOfLines();
1057         long posX;
1058         long posY;
1059         PositionToXY(pos, &posX, &posY);
1060         float posLine = (float) posY;
1061         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1062         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1063 #endif // GTK 1.x/2.x
1064     }
1065 }
1066
1067 #ifdef __WXGTK20__
1068
1069 wxTextCtrlHitTestResult
1070 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1071 {
1072     if ( !IsMultiLine() )
1073     {
1074         // not supported
1075         return wxTE_HT_UNKNOWN;
1076     }
1077
1078     int x, y;
1079     gtk_text_view_window_to_buffer_coords
1080     (
1081         GTK_TEXT_VIEW(m_text),
1082         GTK_TEXT_WINDOW_TEXT,
1083         pt.x, pt.y,
1084         &x, &y
1085     );
1086
1087     GtkTextIter iter;
1088     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1089     if ( pos )
1090         *pos = gtk_text_iter_get_offset(&iter);
1091
1092     return wxTE_HT_ON_TEXT;
1093 }
1094
1095 #endif // __WXGTK20__
1096
1097 long wxTextCtrl::GetInsertionPoint() const
1098 {
1099     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1100
1101 #ifdef __WXGTK20__
1102     if (m_windowStyle & wxTE_MULTILINE)
1103     {
1104         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1105
1106         // There is no direct accessor for the cursor, but
1107         // internally, the cursor is the "mark" called
1108         // "insert" in the text view's btree structure.
1109
1110         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1111         GtkTextIter cursor;
1112         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1113
1114         return gtk_text_iter_get_offset( &cursor );
1115     }
1116     else
1117 #endif
1118     {
1119     return (long) GET_EDITABLE_POS(m_text);
1120     }
1121 }
1122
1123 long wxTextCtrl::GetLastPosition() const
1124 {
1125     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1126
1127     int pos = 0;
1128
1129     if (m_windowStyle & wxTE_MULTILINE)
1130     {
1131 #ifdef __WXGTK20__
1132         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1133         GtkTextIter end;
1134         gtk_text_buffer_get_end_iter( text_buffer, &end );
1135
1136         pos = gtk_text_iter_get_offset( &end );
1137 #else
1138         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1139 #endif
1140     }
1141     else
1142     {
1143         pos = GTK_ENTRY(m_text)->text_length;
1144     }
1145
1146     return (long)pos;
1147 }
1148
1149 void wxTextCtrl::Remove( long from, long to )
1150 {
1151     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1152
1153 #ifdef __WXGTK20__
1154     if (m_windowStyle & wxTE_MULTILINE)
1155     {
1156         GtkTextBuffer *
1157             text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1158
1159         GtkTextIter fromi, toi;
1160         gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1161         gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1162
1163         gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1164     }
1165     else // single line
1166 #endif
1167     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1168 }
1169
1170 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1171 {
1172     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1173
1174     Remove( from, to );
1175
1176     if (!value.IsEmpty())
1177     {
1178 #ifdef __WXGTK20__
1179         SetInsertionPoint( from );
1180         WriteText( value );
1181 #else // GTK 1.x
1182         gint pos = (gint)from;
1183 #if wxUSE_UNICODE
1184         wxWX2MBbuf buf = value.mbc_str();
1185         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1186 #else
1187         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1188 #endif // wxUSE_UNICODE
1189 #endif // GTK 1.x/2.x
1190     }
1191 }
1192
1193 void wxTextCtrl::Cut()
1194 {
1195     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1196
1197 #ifdef __WXGTK20__
1198     if (m_windowStyle & wxTE_MULTILINE)
1199         g_signal_emit_by_name(m_text, "cut-clipboard");
1200     else
1201 #endif
1202         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1203 }
1204
1205 void wxTextCtrl::Copy()
1206 {
1207     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1208
1209 #ifdef __WXGTK20__
1210     if (m_windowStyle & wxTE_MULTILINE)
1211         g_signal_emit_by_name(m_text, "copy-clipboard");
1212     else
1213 #endif
1214         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1215 }
1216
1217 void wxTextCtrl::Paste()
1218 {
1219     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1220
1221 #ifdef __WXGTK20__
1222     if (m_windowStyle & wxTE_MULTILINE)
1223         g_signal_emit_by_name(m_text, "paste-clipboard");
1224     else
1225 #endif
1226         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1227 }
1228
1229 // Undo/redo
1230 void wxTextCtrl::Undo()
1231 {
1232     // TODO
1233     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1234 }
1235
1236 void wxTextCtrl::Redo()
1237 {
1238     // TODO
1239     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1240 }
1241
1242 bool wxTextCtrl::CanUndo() const
1243 {
1244     // TODO
1245     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1246     return FALSE;
1247 }
1248
1249 bool wxTextCtrl::CanRedo() const
1250 {
1251     // TODO
1252     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1253     return FALSE;
1254 }
1255
1256 // If the return values from and to are the same, there is no
1257 // selection.
1258 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1259 {
1260     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1261
1262     gint from = -1;
1263     gint to = -1;
1264     bool haveSelection = FALSE;
1265
1266 #ifdef __WXGTK20__
1267      if (m_windowStyle & wxTE_MULTILINE)
1268      {
1269          GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1270          GtkTextIter ifrom, ito;
1271          if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1272          {
1273              haveSelection = TRUE;
1274              from = gtk_text_iter_get_offset(&ifrom);
1275              to = gtk_text_iter_get_offset(&ito);
1276          }
1277      }
1278      else  // not multi-line
1279      {
1280          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1281                                                  &from, &to) )
1282          {
1283              haveSelection = TRUE;
1284          }
1285      }
1286 #else //  not GTK2
1287      if ( (GTK_EDITABLE(m_text)->has_selection) )
1288      {
1289          haveSelection = TRUE;
1290          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1291          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1292      }
1293 #endif
1294
1295      if (! haveSelection )
1296           from = to = GetInsertionPoint();
1297
1298      if ( from > to )
1299      {
1300          // exchange them to be compatible with wxMSW
1301          gint tmp = from;
1302          from = to;
1303          to = tmp;
1304      }
1305
1306     if ( fromOut )
1307         *fromOut = from;
1308     if ( toOut )
1309         *toOut = to;
1310 }
1311
1312
1313 bool wxTextCtrl::IsEditable() const
1314 {
1315     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1316
1317 #ifdef __WXGTK20__
1318     if (m_windowStyle & wxTE_MULTILINE)
1319     {
1320         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1321     }
1322     else
1323     {
1324         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1325     }
1326 #else
1327     return GTK_EDITABLE(m_text)->editable;
1328 #endif
1329 }
1330
1331 bool wxTextCtrl::IsModified() const
1332 {
1333     return m_modified;
1334 }
1335
1336 void wxTextCtrl::Clear()
1337 {
1338     SetValue( wxT("") );
1339 }
1340
1341 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1342 {
1343     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1344
1345     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1346     {
1347         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1348         event.SetEventObject(this);
1349         event.SetString(GetValue());
1350         if (GetEventHandler()->ProcessEvent(event)) return;
1351     }
1352
1353     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1354     {
1355         // This will invoke the dialog default action, such
1356         // as the clicking the default button.
1357
1358         wxWindow *top_frame = m_parent;
1359         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1360             top_frame = top_frame->GetParent();
1361
1362         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1363         {
1364             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1365
1366             if (window->default_widget)
1367             {
1368                 gtk_widget_activate (window->default_widget);
1369                 return;
1370             }
1371         }
1372     }
1373
1374     key_event.Skip();
1375 }
1376
1377 GtkWidget* wxTextCtrl::GetConnectWidget()
1378 {
1379     return GTK_WIDGET(m_text);
1380 }
1381
1382 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1383 {
1384     if (m_windowStyle & wxTE_MULTILINE)
1385     {
1386 #ifdef __WXGTK20__
1387         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1388 #else
1389         return (window == GTK_TEXT(m_text)->text_area);
1390 #endif
1391     }
1392     else
1393     {
1394         return (window == GTK_ENTRY(m_text)->text_area);
1395     }
1396 }
1397
1398 // the font will change for subsequent text insertiongs
1399 bool wxTextCtrl::SetFont( const wxFont &font )
1400 {
1401     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1402
1403     if ( !wxTextCtrlBase::SetFont(font) )
1404     {
1405         // font didn't change, nothing to do
1406         return FALSE;
1407     }
1408
1409     if ( m_windowStyle & wxTE_MULTILINE )
1410     {
1411         SetUpdateFont(TRUE);
1412
1413         m_defaultStyle.SetFont(font);
1414
1415         ChangeFontGlobally();
1416     }
1417
1418     return TRUE;
1419 }
1420
1421 void wxTextCtrl::ChangeFontGlobally()
1422 {
1423     // this method is very inefficient and hence should be called as rarely as
1424     // possible!
1425     //
1426     // TODO: it can be implemented much more efficiently for GTK2
1427     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE)
1428 #ifndef __WXGTK20__
1429                     && m_updateFont
1430 #endif // GTK+ 1.x
1431                     ,
1432                   _T("shouldn't be called for single line controls") );
1433
1434     wxString value = GetValue();
1435     if ( !value.IsEmpty() )
1436     {
1437         SetUpdateFont(FALSE);
1438
1439         Clear();
1440         AppendText(value);
1441     }
1442 }
1443
1444 #ifndef __WXGTK20__
1445
1446 void wxTextCtrl::UpdateFontIfNeeded()
1447 {
1448     if ( m_updateFont )
1449         ChangeFontGlobally();
1450 }
1451
1452 #endif // GTK+ 1.x
1453
1454 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1455 {
1456     if ( !wxControl::SetForegroundColour(colour) )
1457         return FALSE;
1458
1459     // update default fg colour too
1460     m_defaultStyle.SetTextColour(colour);
1461
1462     return TRUE;
1463 }
1464
1465 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1466 {
1467     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1468
1469     if ( !wxControl::SetBackgroundColour( colour ) )
1470         return FALSE;
1471
1472     if (!m_widget->window)
1473         return FALSE;
1474
1475     if (!m_backgroundColour.Ok())
1476         return FALSE;
1477
1478     if (m_windowStyle & wxTE_MULTILINE)
1479     {
1480 #ifndef __WXGTK20__
1481         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1482         if (!window)
1483             return FALSE;
1484         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1485         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1486         gdk_window_clear( window );
1487 #endif
1488     }
1489
1490     // change active background color too
1491     m_defaultStyle.SetBackgroundColour( colour );
1492
1493     return TRUE;
1494 }
1495
1496 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1497 {
1498     if ( m_windowStyle & wxTE_MULTILINE )
1499     {
1500         if ( style.IsDefault() )
1501         {
1502             // nothing to do
1503             return TRUE;
1504         }
1505 #ifdef __WXGTK20__
1506         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1507         gint l = gtk_text_buffer_get_char_count( text_buffer );
1508
1509         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1510                      _T("invalid range in wxTextCtrl::SetStyle") );
1511
1512         GtkTextIter starti, endi;
1513         gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1514         gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1515
1516         // use the attributes from style which are set in it and fall back
1517         // first to the default style and then to the text control default
1518         // colours for the others
1519         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1520
1521         PangoFontDescription *font_description = attr.HasFont()
1522                              ? attr.GetFont().GetNativeFontInfo()->description
1523                              : NULL;
1524
1525         GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1526                                                : NULL;
1527
1528         GdkColor *colBg = attr.HasBackgroundColour()
1529                             ? attr.GetBackgroundColour().GetColor()
1530                             : NULL;
1531
1532         GtkTextTag *tag;
1533         tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1534                                          "foreground-gdk", colFg,
1535                                          "background-gdk", colBg, NULL );
1536         gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1537
1538          return TRUE;
1539 #else
1540         // VERY dirty way to do that - removes the required text and re-adds it
1541         // with styling (FIXME)
1542
1543         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1544
1545         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1546                      _T("invalid range in wxTextCtrl::SetStyle") );
1547
1548         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1549         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1550         wxString tmp(text,*wxConvCurrent);
1551         g_free( text );
1552
1553         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1554         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1555
1556 #if wxUSE_UNICODE
1557         wxWX2MBbuf buf = tmp.mbc_str();
1558         const char *txt = buf;
1559         size_t txtlen = strlen(buf);
1560 #else
1561         const char *txt = tmp;
1562         size_t txtlen = tmp.length();
1563 #endif
1564
1565         // use the attributes from style which are set in it and fall back
1566         // first to the default style and then to the text control default
1567         // colours for the others
1568         wxGtkTextInsert(m_text,
1569                         wxTextAttr::Combine(style, m_defaultStyle, this),
1570                         txt,
1571                         txtlen);
1572
1573         /* does not seem to help under GTK+ 1.2 !!!
1574         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1575         SetInsertionPoint( old_pos );
1576 #endif
1577         return TRUE;
1578     }
1579     else // singe line
1580     {
1581         // cannot do this for GTK+'s Entry widget
1582         return FALSE;
1583     }
1584 }
1585
1586 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1587 {
1588     gtk_widget_modify_style(m_text, style);
1589 }
1590
1591 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1592 {
1593     Cut();
1594 }
1595
1596 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1597 {
1598     Copy();
1599 }
1600
1601 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1602 {
1603     Paste();
1604 }
1605
1606 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1607 {
1608     Undo();
1609 }
1610
1611 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1612 {
1613     Redo();
1614 }
1615
1616 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1617 {
1618     event.Enable( CanCut() );
1619 }
1620
1621 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1622 {
1623     event.Enable( CanCopy() );
1624 }
1625
1626 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1627 {
1628     event.Enable( CanPaste() );
1629 }
1630
1631 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1632 {
1633     event.Enable( CanUndo() );
1634 }
1635
1636 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1637 {
1638     event.Enable( CanRedo() );
1639 }
1640
1641 void wxTextCtrl::OnInternalIdle()
1642 {
1643     wxCursor cursor = m_cursor;
1644     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1645
1646     if (cursor.Ok())
1647     {
1648 #ifndef __WXGTK20__
1649         GdkWindow *window = (GdkWindow*) NULL;
1650         if (HasFlag(wxTE_MULTILINE))
1651             window = GTK_TEXT(m_text)->text_area;
1652         else
1653             window = GTK_ENTRY(m_text)->text_area;
1654
1655         if (window)
1656             gdk_window_set_cursor( window, cursor.GetCursor() );
1657
1658         if (!g_globalCursor.Ok())
1659             cursor = *wxSTANDARD_CURSOR;
1660
1661         window = m_widget->window;
1662         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1663             gdk_window_set_cursor( window, cursor.GetCursor() );
1664 #endif
1665     }
1666
1667     if (g_delayedFocus == this)
1668     {
1669         if (GTK_WIDGET_REALIZED(m_widget))
1670         {
1671             gtk_widget_grab_focus( m_widget );
1672             g_delayedFocus = NULL;
1673         }
1674     }
1675
1676     if (wxUpdateUIEvent::CanUpdate(this))
1677         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1678 }
1679
1680 wxSize wxTextCtrl::DoGetBestSize() const
1681 {
1682     // FIXME should be different for multi-line controls...
1683     wxSize ret( wxControl::DoGetBestSize() );
1684     wxSize best(80, ret.y);
1685     CacheBestSize(best);
1686     return best;
1687 }
1688
1689 // ----------------------------------------------------------------------------
1690 // freeze/thaw
1691 // ----------------------------------------------------------------------------
1692
1693 void wxTextCtrl::Freeze()
1694 {
1695 #ifndef __WXGTK20__
1696     if ( HasFlag(wxTE_MULTILINE) )
1697     {
1698         gtk_text_freeze(GTK_TEXT(m_text));
1699     }
1700 #endif
1701 }
1702
1703 void wxTextCtrl::Thaw()
1704 {
1705 #ifndef __WXGTK20__
1706     if ( HasFlag(wxTE_MULTILINE) )
1707     {
1708         GTK_TEXT(m_text)->vadj->value = 0.0;
1709
1710         gtk_text_thaw(GTK_TEXT(m_text));
1711     }
1712 #endif
1713 }
1714
1715 // ----------------------------------------------------------------------------
1716 // scrolling
1717 // ----------------------------------------------------------------------------
1718
1719 GtkAdjustment *wxTextCtrl::GetVAdj() const
1720 {
1721     if ( !IsMultiLine() )
1722         return NULL;
1723
1724 #ifdef __WXGTK20__
1725     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1726 #else
1727     return GTK_TEXT(m_text)->vadj;
1728 #endif
1729 }
1730
1731 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1732 {
1733     float value = adj->value + diff;
1734
1735     if ( value < 0 )
1736         value = 0;
1737
1738     float upper = adj->upper - adj->page_size;
1739     if ( value > upper )
1740         value = upper;
1741
1742     // did we noticeably change the scroll position?
1743     if ( fabs(adj->value - value) < 0.2 )
1744     {
1745         // well, this is what Robert does in wxScrollBar, so it must be good...
1746         return FALSE;
1747     }
1748
1749     adj->value = value;
1750
1751 #ifdef __WXGTK20__
1752     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1753 #else
1754     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1755 #endif
1756
1757     return TRUE;
1758 }
1759
1760 bool wxTextCtrl::ScrollLines(int lines)
1761 {
1762     GtkAdjustment *adj = GetVAdj();
1763     if ( !adj )
1764         return FALSE;
1765
1766 #ifdef __WXGTK20__
1767     int diff = (int)ceil(lines*adj->step_increment);
1768 #else
1769     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1770     int diff = 10*lines;
1771 #endif
1772
1773     return DoScroll(adj, diff);
1774 }
1775
1776 bool wxTextCtrl::ScrollPages(int pages)
1777 {
1778     GtkAdjustment *adj = GetVAdj();
1779     if ( !adj )
1780         return FALSE;
1781
1782     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1783 }
1784
1785
1786 // static
1787 wxVisualAttributes
1788 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1789 {
1790     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1791 }