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         if ( !buffer )
 597         {
 598             // what else can we do? at least don't crash...
 599             return;
 600         }
 601
 602         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 603
 604         // TODO: Call whatever is needed to delete the selection.
 605         wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
 606
 607         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 608         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 609         if ( adj->value == adj->upper - adj->page_size )
 610         {
 611             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 612                     gtk_text_buffer_get_insert( text_buffer ), 0.0, FALSE, 0.0, 1.0 );
 613         }
 614 #else // GTK 1.x
 615         // After cursor movements, gtk_text_get_point() is wrong by one.
 616         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 617
 618         // always use m_defaultStyle, even if it is empty as otherwise
 619         // resetting the style and appending some more text wouldn't work: if
 620         // we don't specify the style explicitly, the old style would be used
 621         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 622         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 623
 624         // we called wxGtkTextInsert with correct font, no need to do anything
 625         // in UpdateFontIfNeeded() any longer
 626         if ( !text.empty() )
 627         {
 628             SetUpdateFont(FALSE);
 629         }
 630
 631         // Bring editable's cursor back uptodate.
 632         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 633 #endif // GTK 1.x/2.0
 634     }
 635     else // single line
 636     {
 637         // First remove the selection if there is one
 638         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 639
 640         // This moves the cursor pos to behind the inserted text.
 641         gint len = GET_EDITABLE_POS(m_text);
 642
 643 #ifdef __WXGTK20__
 644
 645 #if wxUSE_UNICODE
 646         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 647 #else
 648         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 649 #endif
 650         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 651
 652 #else
 653         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 654 #endif
 655
 656         // Bring entry's cursor uptodate.
 657         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 658     }
 659
 660     m_modified = oldModified;
 661 }
 662
 663 void wxTextCtrl::AppendText( const wxString &text )
 664 {
 665     SetInsertionPointEnd();
 666     WriteText( text );
 667 }
 668
 669 wxString wxTextCtrl::GetLineText( long lineNo ) const
 670 {
 671     if (m_windowStyle & wxTE_MULTILINE)
 672     {
 673 #ifndef __WXGTK20__
 674         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 675         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 676
 677         if (text)
 678         {
 679             wxString buf(wxT(""));
 680             long i;
 681             int currentLine = 0;
 682             for (i = 0; currentLine != lineNo && text[i]; i++ )
 683                 if (text[i] == '\n')
 684             currentLine++;
 685             // Now get the text
 686             int j;
 687             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 688                 buf += text[i];
 689
 690             g_free( text );
 691             return buf;
 692         }
 693         else
 694         {
 695             return wxEmptyString;
 696         }
 697 #else
 698         GtkTextBuffer *text_buffer;
 699         text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(m_text));
 700         GtkTextIter line;
 701         gtk_text_buffer_get_iter_at_line(text_buffer,&line,lineNo);
 702         GtkTextIter end;
 703         gtk_text_buffer_get_end_iter(text_buffer,&end );
 704         gchar *text = gtk_text_buffer_get_text(text_buffer,&line,&end,TRUE);
 705         wxString result(wxGTK_CONV_BACK(text));
 706         g_free(text);
 707         return result.BeforeFirst(wxT('\n'));
 708 #endif
 709     }
 710     else
 711     {
 712         if (lineNo == 0) return GetValue();
 713         return wxEmptyString;
 714     }
 715 }
 716
 717 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 718 {
 719   /* If you implement this, don't forget to update the documentation!
 720    * (file docs/latex/wx/text.tex) */
 721     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 722 }
 723
 724 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 725 {
 726     if ( m_windowStyle & wxTE_MULTILINE )
 727     {
 728         wxString text = GetValue();
 729
 730         // cast to prevent warning. But pos really should've been unsigned.
 731         if( (unsigned long)pos > text.Len()  )
 732             return FALSE;
 733
 734         *x=0;   // First Col
 735         *y=0;   // First Line
 736
 737         const wxChar* stop = text.c_str() + pos;
 738         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 739         {
 740             if (*p == wxT('\n'))
 741             {
 742                 (*y)++;
 743                 *x=0;
 744             }
 745             else
 746                 (*x)++;
 747         }
 748     }
 749     else // single line control
 750     {
 751         if ( pos <= GTK_ENTRY(m_text)->text_length )
 752         {
 753             *y = 0;
 754             *x = pos;
 755         }
 756         else
 757         {
 758             // index out of bounds
 759             return FALSE;
 760         }
 761     }
 762
 763     return TRUE;
 764 }
 765
 766 long wxTextCtrl::XYToPosition(long x, long y ) const
 767 {
 768     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 769
 770     long pos=0;
 771     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 772
 773     pos += x;
 774     return pos;
 775 }
 776
 777 int wxTextCtrl::GetLineLength(long lineNo) const
 778 {
 779     wxString str = GetLineText (lineNo);
 780     return (int) str.Length();
 781 }
 782
 783 int wxTextCtrl::GetNumberOfLines() const
 784 {
 785     if (m_windowStyle & wxTE_MULTILINE)
 786     {
 787 #ifdef __WXGTK20__
 788         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 789
 790         return gtk_text_buffer_get_line_count( buffer );
 791 #else
 792         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 793         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 794
 795         if (text)
 796         {
 797             int currentLine = 0;
 798             for (int i = 0; i < len; i++ )
 799             {
 800                 if (text[i] == '\n')
 801                     currentLine++;
 802             }
 803             g_free( text );
 804
 805             // currentLine is 0 based, add 1 to get number of lines
 806             return currentLine + 1;
 807         }
 808         else
 809         {
 810             return 0;
 811         }
 812 #endif
 813     }
 814     else
 815     {
 816         return 1;
 817     }
 818 }
 819
 820 void wxTextCtrl::SetInsertionPoint( long pos )
 821 {
 822     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 823
 824     if ( IsMultiLine() )
 825     {
 826 #ifdef __WXGTK20__
 827         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 828         GtkTextIter iter;
 829         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 830         gtk_text_buffer_place_cursor( text_buffer, &iter );
 831         gtk_text_view_scroll_mark_onscreen
 832         (
 833             GTK_TEXT_VIEW(m_text),
 834             gtk_text_buffer_get_insert( text_buffer )
 835         );
 836 #else // GTK+ 1.x
 837         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 838           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 839
 840         /* we fake a set_point by inserting and deleting. as the user
 841            isn't supposed to get to know about this non-sense, we
 842            disconnect so that no events are sent to the user program. */
 843
 844         gint tmp = (gint)pos;
 845         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 846         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 847
 848         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 849           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 850
 851         // bring editable's cursor uptodate. Bug in GTK.
 852         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 853 #endif // GTK+ 2/1
 854     }
 855     else
 856     {
 857         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 858
 859         // Bring editable's cursor uptodate. Bug in GTK.
 860         SET_EDITABLE_POS(m_text, (guint32)pos);
 861     }
 862 }
 863
 864 void wxTextCtrl::SetInsertionPointEnd()
 865 {
 866     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 867
 868     if (m_windowStyle & wxTE_MULTILINE)
 869     {
 870 #ifdef __WXGTK20__
 871         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 872         GtkTextIter end;
 873         gtk_text_buffer_get_end_iter( text_buffer, &end );
 874         gtk_text_buffer_place_cursor( text_buffer, &end );
 875 #else
 876         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 877 #endif
 878     }
 879     else
 880     {
 881         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 882     }
 883 }
 884
 885 void wxTextCtrl::SetEditable( bool editable )
 886 {
 887     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 888
 889     if (m_windowStyle & wxTE_MULTILINE)
 890     {
 891 #ifdef __WXGTK20__
 892         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 893 #else
 894         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 895 #endif
 896     }
 897     else
 898     {
 899         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 900     }
 901 }
 902
 903 bool wxTextCtrl::Enable( bool enable )
 904 {
 905     if (!wxWindowBase::Enable(enable))
 906     {
 907         // nothing to do
 908         return FALSE;
 909     }
 910
 911     if (m_windowStyle & wxTE_MULTILINE)
 912     {
 913 #ifdef __WXGTK20__
 914         SetEditable( enable );
 915 #else
 916         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 917         OnParentEnable(enable);
 918 #endif
 919     }
 920     else
 921     {
 922         gtk_widget_set_sensitive( m_text, enable );
 923     }
 924
 925     return TRUE;
 926 }
 927
 928 // wxGTK-specific: called recursively by Enable,
 929 // to give widgets an oppprtunity to correct their colours after they
 930 // have been changed by Enable
 931 void wxTextCtrl::OnParentEnable( bool enable )
 932 {
 933     // If we have a custom background colour, we use this colour in both
 934     // disabled and enabled mode, or we end up with a different colour under the
 935     // text.
 936     wxColour oldColour = GetBackgroundColour();
 937     if (oldColour.Ok())
 938     {
 939         // Need to set twice or it'll optimize the useful stuff out
 940         if (oldColour == * wxWHITE)
 941             SetBackgroundColour(*wxBLACK);
 942         else
 943             SetBackgroundColour(*wxWHITE);
 944         SetBackgroundColour(oldColour);
 945     }
 946 }
 947
 948 void wxTextCtrl::MarkDirty()
 949 {
 950     m_modified = TRUE;
 951 }
 952
 953 void wxTextCtrl::DiscardEdits()
 954 {
 955     m_modified = FALSE;
 956 }
 957
 958 // ----------------------------------------------------------------------------
 959 // max text length support
 960 // ----------------------------------------------------------------------------
 961
 962 void wxTextCtrl::IgnoreNextTextUpdate()
 963 {
 964     m_ignoreNextUpdate = TRUE;
 965 }
 966
 967 bool wxTextCtrl::IgnoreTextUpdate()
 968 {
 969     if ( m_ignoreNextUpdate )
 970     {
 971         m_ignoreNextUpdate = FALSE;
 972
 973         return TRUE;
 974     }
 975
 976     return FALSE;
 977 }
 978
 979 void wxTextCtrl::SetMaxLength(unsigned long len)
 980 {
 981     if ( !HasFlag(wxTE_MULTILINE) )
 982     {
 983         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 984
 985         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 986         // we had tried to enter more text than allowed by max text length and
 987         // the text wasn't really changed
 988         //
 989         // to detect this and generate TEXT_MAXLEN event instead of
 990         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 991         //
 992         // when max len is set to 0 we disconnect our handler as it means that
 993         // we shouldn't check anything any more
 994         if ( len )
 995         {
 996             gtk_signal_connect( GTK_OBJECT(m_text),
 997                                 "insert_text",
 998                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 999                                 (gpointer)this);
1000         }
1001         else // no checking
1002         {
1003             gtk_signal_disconnect_by_func
1004             (
1005                 GTK_OBJECT(m_text),
1006                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1007                 (gpointer)this
1008             );
1009         }
1010     }
1011 }
1012
1013 void wxTextCtrl::SetSelection( long from, long to )
1014 {
1015     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1016
1017     if (from == -1 && to == -1)
1018     {
1019         from = 0;
1020         to = GetValue().Length();
1021     }
1022
1023 #ifndef __WXGTK20__
1024     if ( (m_windowStyle & wxTE_MULTILINE) &&
1025          !GTK_TEXT(m_text)->line_start_cache )
1026     {
1027         // tell the programmer that it didn't work
1028         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1029         return;
1030     }
1031 #endif
1032
1033     if (m_windowStyle & wxTE_MULTILINE)
1034     {
1035 #ifdef __WXGTK20__
1036         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1037
1038         GtkTextIter fromi, toi;
1039         gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
1040         gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
1041
1042         gtk_text_buffer_place_cursor( buf, &toi );
1043         gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
1044 #else
1045         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1046 #endif
1047     }
1048     else
1049     {
1050         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1051     }
1052 }
1053
1054 void wxTextCtrl::ShowPosition( long pos )
1055 {
1056     if (m_windowStyle & wxTE_MULTILINE)
1057     {
1058 #ifdef __WXGTK20__
1059         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1060         GtkTextIter iter;
1061         gtk_text_buffer_get_start_iter( buf, &iter );
1062         gtk_text_iter_set_offset( &iter, pos );
1063         GtkTextMark *mark = gtk_text_buffer_create_mark( buf, NULL, &iter, TRUE );
1064         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1065 #else // GTK 1.x
1066         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1067         float totalLines =  (float) GetNumberOfLines();
1068         long posX;
1069         long posY;
1070         PositionToXY(pos, &posX, &posY);
1071         float posLine = (float) posY;
1072         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1073         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1074 #endif // GTK 1.x/2.x
1075     }
1076 }
1077
1078 #ifdef __WXGTK20__
1079
1080 wxTextCtrlHitTestResult
1081 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1082 {
1083     if ( !IsMultiLine() )
1084     {
1085         // not supported
1086         return wxTE_HT_UNKNOWN;
1087     }
1088
1089     int x, y;
1090     gtk_text_view_window_to_buffer_coords
1091     (
1092         GTK_TEXT_VIEW(m_text),
1093         GTK_TEXT_WINDOW_TEXT,
1094         pt.x, pt.y,
1095         &x, &y
1096     );
1097
1098     GtkTextIter iter;
1099     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1100     if ( pos )
1101         *pos = gtk_text_iter_get_offset(&iter);
1102
1103     return wxTE_HT_ON_TEXT;
1104 }
1105
1106 #endif // __WXGTK20__
1107
1108 long wxTextCtrl::GetInsertionPoint() const
1109 {
1110     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1111
1112 #ifdef __WXGTK20__
1113     if (m_windowStyle & wxTE_MULTILINE)
1114     {
1115         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1116
1117         // There is no direct accessor for the cursor, but
1118         // internally, the cursor is the "mark" called
1119         // "insert" in the text view's btree structure.
1120
1121         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1122         GtkTextIter cursor;
1123         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1124
1125         return gtk_text_iter_get_offset( &cursor );
1126     }
1127     else
1128 #endif
1129     {
1130     return (long) GET_EDITABLE_POS(m_text);
1131     }
1132 }
1133
1134 long wxTextCtrl::GetLastPosition() const
1135 {
1136     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1137
1138     int pos = 0;
1139
1140     if (m_windowStyle & wxTE_MULTILINE)
1141     {
1142 #ifdef __WXGTK20__
1143         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1144         GtkTextIter end;
1145         gtk_text_buffer_get_end_iter( text_buffer, &end );
1146
1147         pos = gtk_text_iter_get_offset( &end );
1148 #else
1149         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1150 #endif
1151     }
1152     else
1153     {
1154         pos = GTK_ENTRY(m_text)->text_length;
1155     }
1156
1157     return (long)pos;
1158 }
1159
1160 void wxTextCtrl::Remove( long from, long to )
1161 {
1162     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1163
1164 #ifdef __WXGTK20__
1165     if (m_windowStyle & wxTE_MULTILINE)
1166     {
1167         GtkTextBuffer *
1168             text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1169
1170         GtkTextIter fromi, toi;
1171         gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1172         gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1173
1174         gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1175     }
1176     else // single line
1177 #endif
1178     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1179 }
1180
1181 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1182 {
1183     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1184
1185     Remove( from, to );
1186
1187     if (!value.IsEmpty())
1188     {
1189 #ifdef __WXGTK20__
1190         SetInsertionPoint( from );
1191         WriteText( value );
1192 #else // GTK 1.x
1193         gint pos = (gint)from;
1194 #if wxUSE_UNICODE
1195         wxWX2MBbuf buf = value.mbc_str();
1196         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1197 #else
1198         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1199 #endif // wxUSE_UNICODE
1200 #endif // GTK 1.x/2.x
1201     }
1202 }
1203
1204 void wxTextCtrl::Cut()
1205 {
1206     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1207
1208 #ifdef __WXGTK20__
1209     if (m_windowStyle & wxTE_MULTILINE)
1210         g_signal_emit_by_name(m_text, "cut-clipboard");
1211     else
1212 #endif
1213         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1214 }
1215
1216 void wxTextCtrl::Copy()
1217 {
1218     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1219
1220 #ifdef __WXGTK20__
1221     if (m_windowStyle & wxTE_MULTILINE)
1222         g_signal_emit_by_name(m_text, "copy-clipboard");
1223     else
1224 #endif
1225         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1226 }
1227
1228 void wxTextCtrl::Paste()
1229 {
1230     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1231
1232 #ifdef __WXGTK20__
1233     if (m_windowStyle & wxTE_MULTILINE)
1234         g_signal_emit_by_name(m_text, "paste-clipboard");
1235     else
1236 #endif
1237         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1238 }
1239
1240 // Undo/redo
1241 void wxTextCtrl::Undo()
1242 {
1243     // TODO
1244     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1245 }
1246
1247 void wxTextCtrl::Redo()
1248 {
1249     // TODO
1250     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1251 }
1252
1253 bool wxTextCtrl::CanUndo() const
1254 {
1255     // TODO
1256     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1257     return FALSE;
1258 }
1259
1260 bool wxTextCtrl::CanRedo() const
1261 {
1262     // TODO
1263     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1264     return FALSE;
1265 }
1266
1267 // If the return values from and to are the same, there is no
1268 // selection.
1269 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1270 {
1271     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1272
1273     gint from = -1;
1274     gint to = -1;
1275     bool haveSelection = FALSE;
1276
1277 #ifdef __WXGTK20__
1278      if (m_windowStyle & wxTE_MULTILINE)
1279      {
1280          GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1281          GtkTextIter ifrom, ito;
1282          if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1283          {
1284              haveSelection = TRUE;
1285              from = gtk_text_iter_get_offset(&ifrom);
1286              to = gtk_text_iter_get_offset(&ito);
1287          }
1288      }
1289      else  // not multi-line
1290      {
1291          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1292                                                  &from, &to) )
1293          {
1294              haveSelection = TRUE;
1295          }
1296      }
1297 #else //  not GTK2
1298      if ( (GTK_EDITABLE(m_text)->has_selection) )
1299      {
1300          haveSelection = TRUE;
1301          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1302          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1303      }
1304 #endif
1305
1306      if (! haveSelection )
1307           from = to = GetInsertionPoint();
1308
1309      if ( from > to )
1310      {
1311          // exchange them to be compatible with wxMSW
1312          gint tmp = from;
1313          from = to;
1314          to = tmp;
1315      }
1316
1317     if ( fromOut )
1318         *fromOut = from;
1319     if ( toOut )
1320         *toOut = to;
1321 }
1322
1323
1324 bool wxTextCtrl::IsEditable() const
1325 {
1326     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1327
1328 #ifdef __WXGTK20__
1329     if (m_windowStyle & wxTE_MULTILINE)
1330     {
1331         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1332     }
1333     else
1334     {
1335         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1336     }
1337 #else
1338     return GTK_EDITABLE(m_text)->editable;
1339 #endif
1340 }
1341
1342 bool wxTextCtrl::IsModified() const
1343 {
1344     return m_modified;
1345 }
1346
1347 void wxTextCtrl::Clear()
1348 {
1349     SetValue( wxT("") );
1350 }
1351
1352 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1353 {
1354     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1355
1356     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1357     {
1358         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1359         event.SetEventObject(this);
1360         event.SetString(GetValue());
1361         if (GetEventHandler()->ProcessEvent(event)) return;
1362     }
1363
1364     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1365     {
1366         // This will invoke the dialog default action, such
1367         // as the clicking the default button.
1368
1369         wxWindow *top_frame = m_parent;
1370         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1371             top_frame = top_frame->GetParent();
1372
1373         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1374         {
1375             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1376
1377             if (window->default_widget)
1378             {
1379                 gtk_widget_activate (window->default_widget);
1380                 return;
1381             }
1382         }
1383     }
1384
1385     key_event.Skip();
1386 }
1387
1388 GtkWidget* wxTextCtrl::GetConnectWidget()
1389 {
1390     return GTK_WIDGET(m_text);
1391 }
1392
1393 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1394 {
1395     if (m_windowStyle & wxTE_MULTILINE)
1396     {
1397 #ifdef __WXGTK20__
1398         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1399 #else
1400         return (window == GTK_TEXT(m_text)->text_area);
1401 #endif
1402     }
1403     else
1404     {
1405         return (window == GTK_ENTRY(m_text)->text_area);
1406     }
1407 }
1408
1409 // the font will change for subsequent text insertiongs
1410 bool wxTextCtrl::SetFont( const wxFont &font )
1411 {
1412     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1413
1414     if ( !wxTextCtrlBase::SetFont(font) )
1415     {
1416         // font didn't change, nothing to do
1417         return FALSE;
1418     }
1419
1420     if ( m_windowStyle & wxTE_MULTILINE )
1421     {
1422         SetUpdateFont(TRUE);
1423
1424         m_defaultStyle.SetFont(font);
1425
1426         ChangeFontGlobally();
1427     }
1428
1429     return TRUE;
1430 }
1431
1432 void wxTextCtrl::ChangeFontGlobally()
1433 {
1434     // this method is very inefficient and hence should be called as rarely as
1435     // possible!
1436     //
1437     // TODO: it can be implemented much more efficiently for GTK2
1438     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE)
1439 #ifndef __WXGTK20__
1440                     && m_updateFont
1441 #endif // GTK+ 1.x
1442                     ,
1443                   _T("shouldn't be called for single line controls") );
1444
1445     wxString value = GetValue();
1446     if ( !value.IsEmpty() )
1447     {
1448         SetUpdateFont(FALSE);
1449
1450         Clear();
1451         AppendText(value);
1452     }
1453 }
1454
1455 #ifndef __WXGTK20__
1456
1457 void wxTextCtrl::UpdateFontIfNeeded()
1458 {
1459     if ( m_updateFont )
1460         ChangeFontGlobally();
1461 }
1462
1463 #endif // GTK+ 1.x
1464
1465 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1466 {
1467     if ( !wxControl::SetForegroundColour(colour) )
1468         return FALSE;
1469
1470     // update default fg colour too
1471     m_defaultStyle.SetTextColour(colour);
1472
1473     return TRUE;
1474 }
1475
1476 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1477 {
1478     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1479
1480     if ( !wxControl::SetBackgroundColour( colour ) )
1481         return FALSE;
1482
1483     if (!m_widget->window)
1484         return FALSE;
1485
1486     if (!m_backgroundColour.Ok())
1487         return FALSE;
1488
1489     if (m_windowStyle & wxTE_MULTILINE)
1490     {
1491 #ifndef __WXGTK20__
1492         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1493         if (!window)
1494             return FALSE;
1495         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1496         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1497         gdk_window_clear( window );
1498 #endif
1499     }
1500
1501     // change active background color too
1502     m_defaultStyle.SetBackgroundColour( colour );
1503
1504     return TRUE;
1505 }
1506
1507 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1508 {
1509     if ( m_windowStyle & wxTE_MULTILINE )
1510     {
1511         if ( style.IsDefault() )
1512         {
1513             // nothing to do
1514             return TRUE;
1515         }
1516 #ifdef __WXGTK20__
1517         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1518         gint l = gtk_text_buffer_get_char_count( text_buffer );
1519
1520         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1521                      _T("invalid range in wxTextCtrl::SetStyle") );
1522
1523         GtkTextIter starti, endi;
1524         gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1525         gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1526
1527         // use the attributes from style which are set in it and fall back
1528         // first to the default style and then to the text control default
1529         // colours for the others
1530         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1531
1532         PangoFontDescription *font_description = attr.HasFont()
1533                              ? attr.GetFont().GetNativeFontInfo()->description
1534                              : NULL;
1535
1536         GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1537                                                : NULL;
1538
1539         GdkColor *colBg = attr.HasBackgroundColour()
1540                             ? attr.GetBackgroundColour().GetColor()
1541                             : NULL;
1542
1543         GtkTextTag *tag;
1544         tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1545                                          "foreground-gdk", colFg,
1546                                          "background-gdk", colBg, NULL );
1547         gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1548
1549          return TRUE;
1550 #else
1551         // VERY dirty way to do that - removes the required text and re-adds it
1552         // with styling (FIXME)
1553
1554         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1555
1556         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1557                      _T("invalid range in wxTextCtrl::SetStyle") );
1558
1559         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1560         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1561         wxString tmp(text,*wxConvCurrent);
1562         g_free( text );
1563
1564         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1565         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1566
1567 #if wxUSE_UNICODE
1568         wxWX2MBbuf buf = tmp.mbc_str();
1569         const char *txt = buf;
1570         size_t txtlen = strlen(buf);
1571 #else
1572         const char *txt = tmp;
1573         size_t txtlen = tmp.length();
1574 #endif
1575
1576         // use the attributes from style which are set in it and fall back
1577         // first to the default style and then to the text control default
1578         // colours for the others
1579         wxGtkTextInsert(m_text,
1580                         wxTextAttr::Combine(style, m_defaultStyle, this),
1581                         txt,
1582                         txtlen);
1583
1584         /* does not seem to help under GTK+ 1.2 !!!
1585         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1586         SetInsertionPoint( old_pos );
1587 #endif
1588         return TRUE;
1589     }
1590     else // singe line
1591     {
1592         // cannot do this for GTK+'s Entry widget
1593         return FALSE;
1594     }
1595 }
1596
1597 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1598 {
1599     gtk_widget_modify_style(m_text, style);
1600 }
1601
1602 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1603 {
1604     Cut();
1605 }
1606
1607 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1608 {
1609     Copy();
1610 }
1611
1612 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1613 {
1614     Paste();
1615 }
1616
1617 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1618 {
1619     Undo();
1620 }
1621
1622 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1623 {
1624     Redo();
1625 }
1626
1627 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1628 {
1629     event.Enable( CanCut() );
1630 }
1631
1632 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1633 {
1634     event.Enable( CanCopy() );
1635 }
1636
1637 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1638 {
1639     event.Enable( CanPaste() );
1640 }
1641
1642 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1643 {
1644     event.Enable( CanUndo() );
1645 }
1646
1647 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1648 {
1649     event.Enable( CanRedo() );
1650 }
1651
1652 void wxTextCtrl::OnInternalIdle()
1653 {
1654     wxCursor cursor = m_cursor;
1655     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1656
1657     if (cursor.Ok())
1658     {
1659 #ifndef __WXGTK20__
1660         GdkWindow *window = (GdkWindow*) NULL;
1661         if (HasFlag(wxTE_MULTILINE))
1662             window = GTK_TEXT(m_text)->text_area;
1663         else
1664             window = GTK_ENTRY(m_text)->text_area;
1665
1666         if (window)
1667             gdk_window_set_cursor( window, cursor.GetCursor() );
1668
1669         if (!g_globalCursor.Ok())
1670             cursor = *wxSTANDARD_CURSOR;
1671
1672         window = m_widget->window;
1673         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1674             gdk_window_set_cursor( window, cursor.GetCursor() );
1675 #endif
1676     }
1677
1678     if (g_delayedFocus == this)
1679     {
1680         if (GTK_WIDGET_REALIZED(m_widget))
1681         {
1682             gtk_widget_grab_focus( m_widget );
1683             g_delayedFocus = NULL;
1684         }
1685     }
1686
1687     if (wxUpdateUIEvent::CanUpdate(this))
1688         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1689 }
1690
1691 wxSize wxTextCtrl::DoGetBestSize() const
1692 {
1693     // FIXME should be different for multi-line controls...
1694     wxSize ret( wxControl::DoGetBestSize() );
1695     wxSize best(80, ret.y);
1696     CacheBestSize(best);
1697     return best;
1698 }
1699
1700 // ----------------------------------------------------------------------------
1701 // freeze/thaw
1702 // ----------------------------------------------------------------------------
1703
1704 void wxTextCtrl::Freeze()
1705 {
1706 #ifndef __WXGTK20__
1707     if ( HasFlag(wxTE_MULTILINE) )
1708     {
1709         gtk_text_freeze(GTK_TEXT(m_text));
1710     }
1711 #endif
1712 }
1713
1714 void wxTextCtrl::Thaw()
1715 {
1716 #ifndef __WXGTK20__
1717     if ( HasFlag(wxTE_MULTILINE) )
1718     {
1719         GTK_TEXT(m_text)->vadj->value = 0.0;
1720
1721         gtk_text_thaw(GTK_TEXT(m_text));
1722     }
1723 #endif
1724 }
1725
1726 // ----------------------------------------------------------------------------
1727 // scrolling
1728 // ----------------------------------------------------------------------------
1729
1730 GtkAdjustment *wxTextCtrl::GetVAdj() const
1731 {
1732     if ( !IsMultiLine() )
1733         return NULL;
1734
1735 #ifdef __WXGTK20__
1736     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1737 #else
1738     return GTK_TEXT(m_text)->vadj;
1739 #endif
1740 }
1741
1742 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1743 {
1744     float value = adj->value + diff;
1745
1746     if ( value < 0 )
1747         value = 0;
1748
1749     float upper = adj->upper - adj->page_size;
1750     if ( value > upper )
1751         value = upper;
1752
1753     // did we noticeably change the scroll position?
1754     if ( fabs(adj->value - value) < 0.2 )
1755     {
1756         // well, this is what Robert does in wxScrollBar, so it must be good...
1757         return FALSE;
1758     }
1759
1760     adj->value = value;
1761
1762 #ifdef __WXGTK20__
1763     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1764 #else
1765     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1766 #endif
1767
1768     return TRUE;
1769 }
1770
1771 bool wxTextCtrl::ScrollLines(int lines)
1772 {
1773     GtkAdjustment *adj = GetVAdj();
1774     if ( !adj )
1775         return FALSE;
1776
1777 #ifdef __WXGTK20__
1778     int diff = (int)ceil(lines*adj->step_increment);
1779 #else
1780     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1781     int diff = 10*lines;
1782 #endif
1783
1784     return DoScroll(adj, diff);
1785 }
1786
1787 bool wxTextCtrl::ScrollPages(int pages)
1788 {
1789     GtkAdjustment *adj = GetVAdj();
1790     if ( !adj )
1791         return FALSE;
1792
1793     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1794 }
1795
1796
1797 // static
1798 wxVisualAttributes
1799 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1800 {
1801     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1802 }