src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_TEXTCTRL
  14
  15 #include "wx/textctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/log.h"
  20     #include "wx/utils.h"
  21     #include "wx/settings.h"
  22     #include "wx/math.h"
  23 #endif
  24
  25 #include "wx/scopeguard.h"
  26 #include "wx/strconv.h"
  27 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  28
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <ctype.h>
  32
  33 #include <gtk/gtk.h>
  34 #include "wx/gtk/private.h"
  35 #include "wx/gtk/private/gtk2-compat.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // helpers
  39 // ----------------------------------------------------------------------------
  40
  41 extern "C" {
  42 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  43                              GtkTextTag *tag,
  44                              GtkTextIter * WXUNUSED(start),
  45                              GtkTextIter * WXUNUSED(end),
  46                              char *prefix)
  47 {
  48     gchar *name;
  49     g_object_get (tag, "name", &name, NULL);
  50
  51     if (!name || strncmp(name, prefix, strlen(prefix)))
  52         // anonymous tag or not starting with prefix - don't remove
  53         g_signal_stop_emission_by_name (buffer, "remove_tag");
  54
  55     g_free(name);
  56 }
  57 }
  58
  59 // remove all tags starting with the given prefix from the start..end range
  60 static void
  61 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  62                               const char *prefix,
  63                               GtkTextIter *start,
  64                               GtkTextIter *end)
  65 {
  66     gulong remove_handler_id = g_signal_connect
  67                                (
  68                                 text_buffer,
  69                                 "remove_tag",
  70                                 G_CALLBACK(wxGtkOnRemoveTag),
  71                                 gpointer(prefix)
  72                                );
  73     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  74     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  75 }
  76
  77 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  78                                        GtkTextBuffer *text_buffer,
  79                                        const wxTextAttr& attr,
  80                                        GtkTextIter *start,
  81                                        GtkTextIter *end)
  82 {
  83     static gchar buf[1024];
  84     GtkTextTag *tag;
  85
  86     if (attr.HasFont())
  87     {
  88         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  89
  90         wxFont font(attr.GetFont());
  91
  92         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  93         wxGtkString font_string(pango_font_description_to_string(font_description));
  94         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  95         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  96                                          buf );
  97         if (!tag)
  98             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  99                                               "font-desc", font_description,
 100                                               NULL );
 101         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102
 103         if (font.GetUnderlined())
 104         {
 105             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 106             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 107                                              buf );
 108             if (!tag)
 109                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 110                                                   "underline-set", TRUE,
 111                                                   "underline", PANGO_UNDERLINE_SINGLE,
 112                                                   NULL );
 113             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 114         }
 115         if ( font.GetStrikethrough() )
 116         {
 117             g_snprintf(buf, sizeof(buf), "WXFONTSTRIKETHROUGH");
 118             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 119                                              buf );
 120             if (!tag)
 121                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 122                                                   "strikethrough-set", TRUE,
 123                                                   "strikethrough", TRUE,
 124                                                   NULL );
 125             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 126         }
 127     }
 128
 129     if (attr.HasTextColour())
 130     {
 131         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 132
 133         const GdkColor *colFg = attr.GetTextColour().GetColor();
 134         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 135                    colFg->red, colFg->green, colFg->blue);
 136         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 137                                          buf );
 138         if (!tag)
 139             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 140                                               "foreground-gdk", colFg, NULL );
 141         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 142     }
 143
 144     if (attr.HasBackgroundColour())
 145     {
 146         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 147
 148         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 149         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 150                    colBg->red, colBg->green, colBg->blue);
 151         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 152                                          buf );
 153         if (!tag)
 154             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 155                                               "background-gdk", colBg, NULL );
 156         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 157     }
 158
 159     if (attr.HasAlignment())
 160     {
 161         GtkTextIter para_start, para_end = *end;
 162         gtk_text_buffer_get_iter_at_line( text_buffer,
 163                                           &para_start,
 164                                           gtk_text_iter_get_line(start) );
 165         gtk_text_iter_forward_line(&para_end);
 166
 167         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", &para_start, &para_end);
 168
 169         GtkJustification align;
 170         switch (attr.GetAlignment())
 171         {
 172             case wxTEXT_ALIGNMENT_RIGHT:
 173                 align = GTK_JUSTIFY_RIGHT;
 174                 break;
 175             case wxTEXT_ALIGNMENT_CENTER:
 176                 align = GTK_JUSTIFY_CENTER;
 177                 break;
 178             case wxTEXT_ALIGNMENT_JUSTIFIED:
 179 #ifdef __WXGTK3__
 180                 align = GTK_JUSTIFY_FILL;
 181                 break;
 182 #elif GTK_CHECK_VERSION(2,11,0)
 183 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 184 // (but if new enough pango isn't available it's a mere gtk warning)
 185                 if (!gtk_check_version(2,11,0))
 186                 {
 187                     align = GTK_JUSTIFY_FILL;
 188                     break;
 189                 }
 190                 // fallthrough
 191 #endif
 192             default:
 193                 align = GTK_JUSTIFY_LEFT;
 194                 break;
 195         }
 196
 197         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 198         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 199                                          buf );
 200         if (!tag)
 201             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 202                                               "justification", align, NULL );
 203         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 204     }
 205
 206     if (attr.HasLeftIndent())
 207     {
 208         // Indentation attribute
 209
 210         // Clear old indentation tags
 211         GtkTextIter para_start, para_end = *end;
 212         gtk_text_buffer_get_iter_at_line( text_buffer,
 213                                           &para_start,
 214                                           gtk_text_iter_get_line(start) );
 215         gtk_text_iter_forward_line(&para_end);
 216
 217         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", &para_start, &para_end);
 218
 219         // Convert indent from 1/10th of a mm into pixels
 220         float factor =
 221             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 222                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 223
 224         const int indent = (int)(factor * attr.GetLeftIndent());
 225         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 226
 227         gint gindent;
 228         gint gsubindent;
 229
 230         if (subIndent >= 0)
 231         {
 232             gindent = indent;
 233             gsubindent = -subIndent;
 234         }
 235         else
 236         {
 237             gindent = -subIndent;
 238             gsubindent = indent;
 239         }
 240
 241         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 242         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 243                                         buf );
 244         if (!tag)
 245             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 246                                               "left-margin", gindent, "indent", gsubindent, NULL );
 247         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 248     }
 249
 250     if (attr.HasTabs())
 251     {
 252         // Set tab stops
 253
 254         // Clear old tabs
 255         GtkTextIter para_start, para_end = *end;
 256         gtk_text_buffer_get_iter_at_line( text_buffer,
 257                                           &para_start,
 258                                           gtk_text_iter_get_line(start) );
 259         gtk_text_iter_forward_line(&para_end);
 260
 261         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", &para_start, &para_end);
 262
 263         const wxArrayInt& tabs = attr.GetTabs();
 264
 265         wxString tagname = wxT("WXTABS");
 266         g_snprintf(buf, sizeof(buf), "WXTABS");
 267         for (size_t i = 0; i < tabs.GetCount(); i++)
 268             tagname += wxString::Format(wxT(" %d"), tabs[i]);
 269
 270         const wxWX2MBbuf buftag = tagname.utf8_str();
 271
 272         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 273                                         buftag );
 274         if (!tag)
 275         {
 276             // Factor to convert from 1/10th of a mm into pixels
 277             float factor =
 278                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 279                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 280
 281             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 282             for (size_t i = 0; i < tabs.GetCount(); i++)
 283                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 284             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 285                                               "tabs", tabArray, NULL );
 286             pango_tab_array_free(tabArray);
 287         }
 288         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 289     }
 290 }
 291
 292 static void wxGtkTextInsert(GtkWidget *text,
 293                             GtkTextBuffer *text_buffer,
 294                             const wxTextAttr& attr,
 295                             const wxCharBuffer& buffer)
 296
 297 {
 298     gint start_offset;
 299     GtkTextIter iter, start;
 300
 301     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 302                                      gtk_text_buffer_get_insert (text_buffer) );
 303     start_offset = gtk_text_iter_get_offset (&iter);
 304     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 305
 306     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 307
 308     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 309 }
 310
 311 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 312
 313 extern "C" {
 314 static void
 315 au_apply_tag_callback(GtkTextBuffer *buffer,
 316                       GtkTextTag *tag,
 317                       GtkTextIter * WXUNUSED(start),
 318                       GtkTextIter * WXUNUSED(end),
 319                       gpointer WXUNUSED(textctrl))
 320 {
 321     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 322         g_signal_stop_emission_by_name (buffer, "apply_tag");
 323 }
 324 }
 325
 326 //-----------------------------------------------------------------------------
 327 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 328 //-----------------------------------------------------------------------------
 329
 330 extern "C" {
 331 static gboolean
 332 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 333 {
 334     return g_unichar_isspace(ch);
 335 }
 336 }
 337
 338 extern "C" {
 339 static gboolean
 340 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 341 {
 342     return !g_unichar_isspace(ch);
 343 }
 344 }
 345
 346 extern "C" {
 347 static gboolean
 348 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 349 {
 350     return !g_unichar_ispunct(ch);
 351 }
 352 }
 353
 354 extern "C" {
 355 static gboolean
 356 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 357 {
 358     return !g_unichar_ispunct(ch) || ch == '/';
 359 }
 360 }
 361
 362 //-----------------------------------------------------------------------------
 363 //  Check for links between s and e and correct tags as necessary
 364 //-----------------------------------------------------------------------------
 365
 366 // This function should be made match better while being efficient at one point.
 367 // Most probably with a row of regular expressions.
 368 extern "C" {
 369 static void
 370 au_check_word( GtkTextIter *s, GtkTextIter *e )
 371 {
 372     static const char *const URIPrefixes[] =
 373     {
 374         "http://",
 375         "ftp://",
 376         "www.",
 377         "ftp.",
 378         "mailto://",
 379         "https://",
 380         "file://",
 381         "nntp://",
 382         "news://",
 383         "telnet://",
 384         "mms://",
 385         "gopher://",
 386         "prospero://",
 387         "wais://",
 388     };
 389
 390     GtkTextIter start = *s, end = *e;
 391     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 392
 393     // Get our special link tag
 394     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 395
 396     // Get rid of punctuation from beginning and end.
 397     // Might want to move this to au_check_range if an improved link checking doesn't
 398     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 399     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 400         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 401
 402     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 403     gtk_text_iter_forward_char(&end);
 404
 405     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 406     size_t len = strlen(text), prefix_len;
 407     size_t n;
 408
 409     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 410     {
 411         prefix_len = strlen(URIPrefixes[n]);
 412         if((len > prefix_len) && !wxStrnicmp(text, URIPrefixes[n], prefix_len))
 413             break;
 414     }
 415
 416     if(n < WXSIZEOF(URIPrefixes))
 417     {
 418         gulong signal_id = g_signal_handler_find (buffer,
 419                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 420                                                   0, 0, NULL,
 421                                                   (gpointer)au_apply_tag_callback, NULL);
 422
 423         g_signal_handler_block (buffer, signal_id);
 424         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 425         g_signal_handler_unblock (buffer, signal_id);
 426     }
 427 }
 428 }
 429
 430 extern "C" {
 431 static void
 432 au_check_range(GtkTextIter *s,
 433                GtkTextIter *range_end)
 434 {
 435     GtkTextIter range_start = *s;
 436     GtkTextIter word_end;
 437     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 438     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 439
 440     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 441
 442     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 443         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 444
 445     while(!gtk_text_iter_equal(&range_start, range_end))
 446     {
 447         word_end = range_start;
 448         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 449
 450         // Now we should have a word delimited by range_start and word_end, correct link tags
 451         au_check_word(&range_start, &word_end);
 452
 453         range_start = word_end;
 454         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 455     }
 456 }
 457 }
 458
 459 //-----------------------------------------------------------------------------
 460 //  "insert-text" for GtkTextBuffer
 461 //-----------------------------------------------------------------------------
 462
 463 extern "C" {
 464
 465 // Normal version used for detecting IME input and generating appropriate
 466 // events for it.
 467 void
 468 wx_insert_text_callback(GtkTextBuffer* buffer,
 469                         GtkTextIter* WXUNUSED(end),
 470                         gchar *text,
 471                         gint WXUNUSED(len),
 472                         wxTextCtrl *win)
 473 {
 474     if ( win->GTKOnInsertText(text) )
 475     {
 476         // If we already handled the new text insertion, don't do it again.
 477         g_signal_stop_emission_by_name (buffer, "insert_text");
 478     }
 479 }
 480
 481
 482 // And an "after" version used for detecting URLs in the text.
 483 static void
 484 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 485                         GtkTextIter *end,
 486                         gchar *text,
 487                         gint len,
 488                         wxTextCtrl *win)
 489 {
 490     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 491         return;
 492
 493     GtkTextIter start = *end;
 494     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 495
 496     GtkTextIter line_start = start;
 497     GtkTextIter line_end = *end;
 498     GtkTextIter words_start = start;
 499     GtkTextIter words_end = *end;
 500
 501     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 502     gtk_text_iter_forward_to_line_end(&line_end);
 503     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 504     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 505
 506     au_check_range(&words_start, &words_end);
 507 }
 508 }
 509
 510 //-----------------------------------------------------------------------------
 511 //  "delete-range" for GtkTextBuffer
 512 //-----------------------------------------------------------------------------
 513
 514 extern "C" {
 515 static void
 516 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 517                          GtkTextIter *start,
 518                          GtkTextIter *end,
 519                          wxTextCtrl *win)
 520 {
 521     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 522         return;
 523
 524     GtkTextIter line_start = *start, line_end = *end;
 525
 526     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 527     gtk_text_iter_forward_to_line_end(&line_end);
 528     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 529     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 530
 531     au_check_range(start, end);
 532 }
 533 }
 534
 535 //-----------------------------------------------------------------------------
 536 //  "populate_popup" from text control and "unmap" from its poup menu
 537 //-----------------------------------------------------------------------------
 538
 539 extern "C" {
 540 static void
 541 gtk_textctrl_popup_unmap( GtkMenu *WXUNUSED(menu), wxTextCtrl* win )
 542 {
 543     win->GTKEnableFocusOutEvent();
 544 }
 545 }
 546
 547 extern "C" {
 548 static void
 549 gtk_textctrl_populate_popup( GtkEntry *WXUNUSED(entry), GtkMenu *menu, wxTextCtrl *win )
 550 {
 551     win->GTKDisableFocusOutEvent();
 552
 553     g_signal_connect (menu, "unmap", G_CALLBACK (gtk_textctrl_popup_unmap), win );
 554 }
 555 }
 556
 557 //-----------------------------------------------------------------------------
 558 //  "changed"
 559 //-----------------------------------------------------------------------------
 560
 561 extern "C" {
 562 static void
 563 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 564 {
 565     if ( win->IgnoreTextUpdate() )
 566         return;
 567
 568     if ( win->MarkDirtyOnChange() )
 569         win->MarkDirty();
 570
 571     win->SendTextUpdatedEvent();
 572 }
 573 }
 574
 575 //-----------------------------------------------------------------------------
 576 //  "mark_set"
 577 //-----------------------------------------------------------------------------
 578
 579 extern "C" {
 580 static void mark_set(GtkTextBuffer*, GtkTextIter*, GtkTextMark* mark, GSList** markList)
 581 {
 582     if (gtk_text_mark_get_name(mark) == NULL)
 583         *markList = g_slist_prepend(*markList, mark);
 584 }
 585 }
 586
 587 //-----------------------------------------------------------------------------
 588 //  wxTextCtrl
 589 //-----------------------------------------------------------------------------
 590
 591 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 592     EVT_CHAR(wxTextCtrl::OnChar)
 593
 594     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 595     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 596     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 597     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 598     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 599
 600     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 601     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 602     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 603     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 604     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 605
 606     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 607     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 608     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 611     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 612     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 613     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 614     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 615 END_EVENT_TABLE()
 616
 617 void wxTextCtrl::Init()
 618 {
 619     m_dontMarkDirty =
 620     m_modified = false;
 621
 622     m_countUpdatesToIgnore = 0;
 623
 624     SetUpdateFont(false);
 625
 626     m_text = NULL;
 627     m_buffer = NULL;
 628     m_showPositionOnThaw = NULL;
 629     m_anonymousMarkList = NULL;
 630 }
 631
 632 wxTextCtrl::~wxTextCtrl()
 633 {
 634     if (m_text)
 635         GTKDisconnect(m_text);
 636     if (m_buffer)
 637         GTKDisconnect(m_buffer);
 638
 639     // this is also done by wxWindowGTK dtor, but has to be done here so our
 640     // DoThaw() override is called
 641     while (IsFrozen())
 642         Thaw();
 643
 644     if (m_anonymousMarkList)
 645         g_slist_free(m_anonymousMarkList);
 646 }
 647
 648 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 649                         wxWindowID id,
 650                         const wxString &value,
 651                         const wxPoint &pos,
 652                         const wxSize &size,
 653                         long style,
 654                         const wxValidator& validator,
 655                         const wxString &name )
 656 {
 657     Init();
 658
 659     Create( parent, id, value, pos, size, style, validator, name );
 660 }
 661
 662 bool wxTextCtrl::Create( wxWindow *parent,
 663                          wxWindowID id,
 664                          const wxString &value,
 665                          const wxPoint &pos,
 666                          const wxSize &size,
 667                          long style,
 668                          const wxValidator& validator,
 669                          const wxString &name )
 670 {
 671     if (!PreCreation( parent, pos, size ) ||
 672         !CreateBase( parent, id, pos, size, style, validator, name ))
 673     {
 674         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 675         return false;
 676     }
 677
 678     bool multi_line = (style & wxTE_MULTILINE) != 0;
 679
 680     if (multi_line)
 681     {
 682         m_buffer = gtk_text_buffer_new(NULL);
 683         gulong sig_id = g_signal_connect(m_buffer, "mark_set", G_CALLBACK(mark_set), &m_anonymousMarkList);
 684         // Create view
 685         m_text = gtk_text_view_new_with_buffer(m_buffer);
 686         // gtk_text_view_set_buffer adds its own reference
 687         g_object_unref(m_buffer);
 688         g_signal_handler_disconnect(m_buffer, sig_id);
 689
 690         // create "ShowPosition" marker
 691         GtkTextIter iter;
 692         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 693         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 694
 695         // create scrolled window
 696         m_widget = gtk_scrolled_window_new( NULL, NULL );
 697         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 698                                         GTK_POLICY_AUTOMATIC,
 699                                         style & wxTE_NO_VSCROLL
 700                                             ? GTK_POLICY_NEVER
 701                                             : GTK_POLICY_AUTOMATIC );
 702         // for ScrollLines/Pages
 703         m_scrollBar[1] = GTK_RANGE(gtk_scrolled_window_get_vscrollbar(GTK_SCROLLED_WINDOW(m_widget)));
 704
 705         // Insert view into scrolled window
 706         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 707
 708         GTKSetWrapMode();
 709
 710         GTKScrolledWindowSetBorder(m_widget, style);
 711
 712         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 713
 714         gtk_widget_set_can_focus(m_widget, FALSE);
 715     }
 716     else
 717     {
 718         // a single-line text control: no need for scrollbars
 719         m_widget =
 720         m_text = gtk_entry_new();
 721         // work around probable bug in GTK+ 2.18 when calling WriteText on a
 722         // new, empty control, see http://trac.wxwidgets.org/ticket/11409
 723         gtk_entry_get_text((GtkEntry*)m_text);
 724
 725         if (style & wxNO_BORDER)
 726             g_object_set (m_text, "has-frame", FALSE, NULL);
 727
 728     }
 729     g_object_ref(m_widget);
 730
 731     m_parent->DoAddChild( this );
 732
 733     m_focusWidget = m_text;
 734
 735     PostCreation(size);
 736
 737     if (multi_line)
 738     {
 739         gtk_widget_show(m_text);
 740     }
 741
 742     // We want to be notified about text changes.
 743     if (multi_line)
 744     {
 745         g_signal_connect (m_buffer, "changed",
 746                           G_CALLBACK (gtk_text_changed_callback), this);
 747     }
 748     else
 749     {
 750         g_signal_connect (m_text, "changed",
 751                           G_CALLBACK (gtk_text_changed_callback), this);
 752     }
 753
 754     // Catch to disable focus out handling
 755     g_signal_connect (m_text, "populate_popup",
 756                       G_CALLBACK (gtk_textctrl_populate_popup),
 757                       this);
 758
 759     if (!value.empty())
 760     {
 761         SetValue( value );
 762     }
 763
 764     if (style & wxTE_PASSWORD)
 765         GTKSetVisibility();
 766
 767     if (style & wxTE_READONLY)
 768         GTKSetEditable();
 769
 770     // left justification (alignment) is the default anyhow
 771     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 772         GTKSetJustification();
 773
 774     if (multi_line)
 775     {
 776         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 777         if (style & wxTE_AUTO_URL)
 778         {
 779             GtkTextIter start, end;
 780
 781             // We create our wxUrl tag here for slight efficiency gain - we
 782             // don't have to check for the tag existence in callbacks,
 783             // hereby it's guaranteed to exist.
 784             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 785                                        "foreground", "blue",
 786                                        "underline", PANGO_UNDERLINE_SINGLE,
 787                                        NULL);
 788
 789             // Check for URLs after each text change
 790             g_signal_connect_after (m_buffer, "insert_text",
 791                                     G_CALLBACK (au_insert_text_callback), this);
 792             g_signal_connect_after (m_buffer, "delete_range",
 793                                     G_CALLBACK (au_delete_range_callback), this);
 794
 795             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 796             // block this callback temporarily. This takes care of gtk+ internal
 797             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 798             // which is undesired because only a part of the URL might be copied.
 799             // The insert-text signal emitted inside it will take care of newly formed
 800             // or wholly copied URLs.
 801             g_signal_connect (m_buffer, "apply_tag",
 802                               G_CALLBACK (au_apply_tag_callback), NULL);
 803
 804             // Check for URLs in the initial string passed to Create
 805             gtk_text_buffer_get_start_iter(m_buffer, &start);
 806             gtk_text_buffer_get_end_iter(m_buffer, &end);
 807             au_check_range(&start, &end);
 808         }
 809
 810         // Also connect a normal (not "after") signal handler for checking for
 811         // the IME-generated input.
 812         g_signal_connect(m_buffer, "insert_text",
 813                          G_CALLBACK(wx_insert_text_callback), this);
 814     }
 815     else // single line
 816     {
 817         // do the right thing with Enter presses depending on whether we have
 818         // wxTE_PROCESS_ENTER or not
 819         GTKSetActivatesDefault();
 820
 821         GTKConnectInsertTextSignal(GTK_ENTRY(m_text));
 822     }
 823
 824
 825     GTKConnectClipboardSignals(m_text);
 826
 827     m_cursor = wxCursor( wxCURSOR_IBEAM );
 828
 829     return true;
 830 }
 831
 832 GtkEditable *wxTextCtrl::GetEditable() const
 833 {
 834     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 835
 836     return GTK_EDITABLE(m_text);
 837 }
 838
 839 GtkEntry *wxTextCtrl::GetEntry() const
 840 {
 841     return GTK_ENTRY(m_text);
 842 }
 843
 844 int wxTextCtrl::GTKIMFilterKeypress(GdkEventKey* event) const
 845 {
 846 #if GTK_CHECK_VERSION(2, 22, 0)
 847     if ( gtk_check_version(2, 12, 0) == 0 )
 848     {
 849         if ( IsSingleLine() )
 850         {
 851             return wxTextEntry::GTKIMFilterKeypress(event);
 852         }
 853         else
 854         {
 855             return gtk_text_view_im_context_filter_keypress(
 856                         GTK_TEXT_VIEW(m_text),
 857                         event
 858                     );
 859         }
 860     }
 861 #else // GTK+ < 2.22
 862     wxUnusedVar(event);
 863 #endif // GTK+ 2.22+
 864
 865     return FALSE;
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869 // flags handling
 870 // ----------------------------------------------------------------------------
 871
 872 void wxTextCtrl::GTKSetEditable()
 873 {
 874     gboolean editable = !HasFlag(wxTE_READONLY);
 875     if ( IsSingleLine() )
 876         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 877     else
 878         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 879 }
 880
 881 void wxTextCtrl::GTKSetVisibility()
 882 {
 883     wxCHECK_RET( IsSingleLine(),
 884                  "wxTE_PASSWORD is for single line text controls only" );
 885
 886     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 887 }
 888
 889 void wxTextCtrl::GTKSetActivatesDefault()
 890 {
 891     wxCHECK_RET( IsSingleLine(),
 892                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 893
 894     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 895                                     !HasFlag(wxTE_PROCESS_ENTER));
 896 }
 897
 898 void wxTextCtrl::GTKSetWrapMode()
 899 {
 900     // no wrapping in single line controls
 901     if ( !IsMultiLine() )
 902         return;
 903
 904     // translate wx wrapping style to GTK+
 905     GtkWrapMode wrap;
 906     if ( HasFlag( wxTE_DONTWRAP ) )
 907         wrap = GTK_WRAP_NONE;
 908     else if ( HasFlag( wxTE_CHARWRAP ) )
 909         wrap = GTK_WRAP_CHAR;
 910     else if ( HasFlag( wxTE_WORDWRAP ) )
 911         wrap = GTK_WRAP_WORD;
 912     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 913         wrap = GTK_WRAP_WORD_CHAR;
 914
 915     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 916 }
 917
 918 void wxTextCtrl::GTKSetJustification()
 919 {
 920     if ( IsMultiLine() )
 921     {
 922         GtkJustification just;
 923         if ( HasFlag(wxTE_RIGHT) )
 924             just = GTK_JUSTIFY_RIGHT;
 925         else if ( HasFlag(wxTE_CENTRE) )
 926             just = GTK_JUSTIFY_CENTER;
 927         else // wxTE_LEFT == 0
 928             just = GTK_JUSTIFY_LEFT;
 929
 930         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 931     }
 932     else // single line
 933     {
 934         gfloat align;
 935         if ( HasFlag(wxTE_RIGHT) )
 936             align = 1.0;
 937         else if ( HasFlag(wxTE_CENTRE) )
 938             align = 0.5;
 939         else // single line
 940             align = 0.0;
 941
 942         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 943     }
 944 }
 945
 946 void wxTextCtrl::SetWindowStyleFlag(long style)
 947 {
 948     long styleOld = GetWindowStyleFlag();
 949
 950     wxTextCtrlBase::SetWindowStyleFlag(style);
 951
 952     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 953         GTKSetEditable();
 954
 955     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 956         GTKSetVisibility();
 957
 958     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 959         GTKSetActivatesDefault();
 960
 961     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 962     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 963         GTKSetWrapMode();
 964
 965     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 966     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 967         GTKSetJustification();
 968 }
 969
 970 // ----------------------------------------------------------------------------
 971 // control value
 972 // ----------------------------------------------------------------------------
 973
 974 wxString wxTextCtrl::GetValue() const
 975 {
 976     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 977
 978     if ( IsMultiLine() )
 979     {
 980         GtkTextIter start;
 981         gtk_text_buffer_get_start_iter( m_buffer, &start );
 982         GtkTextIter end;
 983         gtk_text_buffer_get_end_iter( m_buffer, &end );
 984         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 985
 986         return wxGTK_CONV_BACK(text);
 987     }
 988     else // single line
 989     {
 990         return wxTextEntry::GetValue();
 991     }
 992 }
 993
 994 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 995 {
 996     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 997     // encoding?
 998
 999     // first check the default text style (we intentionally don't check the
1000     // style for the current position as it doesn't make sense for SetValue())
1001     const wxTextAttr& style = GetDefaultStyle();
1002     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
1003                                          : wxFONTENCODING_SYSTEM;
1004
1005     // fall back to the controls font if no style
1006     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
1007         enc = GetFont().GetEncoding();
1008
1009     return enc;
1010 }
1011
1012 bool wxTextCtrl::IsEmpty() const
1013 {
1014     if ( IsMultiLine() )
1015         return gtk_text_buffer_get_char_count(m_buffer) == 0;
1016
1017     return wxTextEntry::IsEmpty();
1018 }
1019
1020 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
1021 {
1022     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1023
1024     m_modified = false;
1025
1026     if ( !IsMultiLine() )
1027     {
1028         wxTextEntry::DoSetValue(value, flags);
1029         return;
1030     }
1031
1032     if (value.IsEmpty())
1033     {
1034         if ( !(flags & SetValue_SendEvent) )
1035             EnableTextChangedEvents(false);
1036
1037         gtk_text_buffer_set_text( m_buffer, "", 0 );
1038
1039         if ( !(flags & SetValue_SendEvent) )
1040             EnableTextChangedEvents(true);
1041
1042         return;
1043     }
1044
1045 #if wxUSE_UNICODE
1046     const wxCharBuffer buffer(value.utf8_str());
1047 #else
1048     wxFontEncoding enc = m_defaultStyle.HasFont()
1049                             ? m_defaultStyle.GetFont().GetEncoding()
1050                             : wxFONTENCODING_SYSTEM;
1051     if ( enc == wxFONTENCODING_SYSTEM )
1052         enc = GetTextEncoding();
1053
1054     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1055     if ( !buffer )
1056     {
1057         // see comment in WriteText() as to why we must warn the user about
1058         // this
1059         wxLogWarning(_("Failed to set text in the text control."));
1060         return;
1061     }
1062 #endif
1063
1064     if ( !(flags & SetValue_SendEvent) )
1065     {
1066         EnableTextChangedEvents(false);
1067     }
1068
1069     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1070
1071     if ( !m_defaultStyle.IsDefault() )
1072     {
1073         GtkTextIter start, end;
1074         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1075         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1076                                    &start, &end);
1077     }
1078
1079     if ( !(flags & SetValue_SendEvent) )
1080     {
1081         EnableTextChangedEvents(true);
1082     }
1083 }
1084
1085 void wxTextCtrl::WriteText( const wxString &text )
1086 {
1087     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1088
1089     // we're changing the text programmatically
1090     DontMarkDirtyOnNextChange();
1091
1092     if ( !IsMultiLine() )
1093     {
1094         wxTextEntry::WriteText(text);
1095         return;
1096     }
1097
1098 #if wxUSE_UNICODE
1099     const wxCharBuffer buffer(text.utf8_str());
1100 #else
1101     // check if we have a specific style for the current position
1102     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1103     wxTextAttr style;
1104     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1105     {
1106         enc = style.GetFontEncoding();
1107     }
1108
1109     if ( enc == wxFONTENCODING_SYSTEM )
1110         enc = GetTextEncoding();
1111
1112     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1113     if ( !buffer )
1114     {
1115         // we must log an error here as losing the text like this can be a
1116         // serious problem (e.g. imagine the document edited by user being
1117         // empty instead of containing the correct text)
1118         wxLogWarning(_("Failed to insert text in the control."));
1119         return;
1120     }
1121 #endif
1122
1123     // First remove the selection if there is one
1124     gtk_text_buffer_delete_selection(m_buffer, false, true);
1125
1126     // Insert the text
1127     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1128
1129     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1130     // won't work when frozen, text view is not using m_buffer then
1131     if (!IsFrozen())
1132     {
1133         GtkAdjustment* adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1134         const double value = gtk_adjustment_get_value(adj);
1135         const double upper = gtk_adjustment_get_upper(adj);
1136         const double page_size = gtk_adjustment_get_page_size(adj);
1137         if (wxIsSameDouble(value, upper - page_size))
1138         {
1139             gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(m_text),
1140                 gtk_text_buffer_get_insert(m_buffer), 0, false, 0, 1);
1141         }
1142     }
1143 }
1144
1145 wxString wxTextCtrl::GetLineText( long lineNo ) const
1146 {
1147     wxString result;
1148     if ( IsMultiLine() )
1149     {
1150         GtkTextIter line;
1151         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1152
1153         GtkTextIter end = line;
1154         // avoid skipping to the next line end if this one is empty
1155         if ( !gtk_text_iter_ends_line(&line) )
1156             gtk_text_iter_forward_to_line_end(&end);
1157
1158         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1159         result = wxGTK_CONV_BACK(text);
1160     }
1161     else
1162     {
1163         if (lineNo == 0)
1164             result = GetValue();
1165     }
1166     return result;
1167 }
1168
1169 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1170 {
1171   /* If you implement this, don't forget to update the documentation!
1172    * (file docs/latex/wx/text.tex) */
1173     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1174 }
1175
1176 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1177 {
1178     if ( IsMultiLine() )
1179     {
1180         GtkTextIter iter;
1181
1182         if (pos > GetLastPosition())
1183             return false;
1184
1185         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1186
1187         if ( y )
1188             *y = gtk_text_iter_get_line(&iter);
1189         if ( x )
1190             *x = gtk_text_iter_get_line_offset(&iter);
1191     }
1192     else // single line control
1193     {
1194         if (pos <= gtk_entry_get_text_length(GTK_ENTRY(m_text)))
1195         {
1196             if ( y )
1197                 *y = 0;
1198             if ( x )
1199                 *x = pos;
1200         }
1201         else
1202         {
1203             // index out of bounds
1204             return false;
1205         }
1206     }
1207
1208     return true;
1209 }
1210
1211 long wxTextCtrl::XYToPosition(long x, long y ) const
1212 {
1213     if ( IsSingleLine() )
1214         return 0;
1215
1216     GtkTextIter iter;
1217     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1218         return -1;
1219
1220     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1221     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1222         return -1;
1223
1224     return gtk_text_iter_get_offset(&iter) + x;
1225 }
1226
1227 int wxTextCtrl::GetLineLength(long lineNo) const
1228 {
1229     if ( IsMultiLine() )
1230     {
1231         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1232         if (lineNo > last_line)
1233             return -1;
1234
1235         GtkTextIter iter;
1236         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1237         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1238         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1239     }
1240     else
1241     {
1242         wxString str = GetLineText (lineNo);
1243         return (int) str.length();
1244     }
1245 }
1246
1247 wxPoint wxTextCtrl::DoPositionToCoords(long pos) const
1248 {
1249     if ( !IsMultiLine() )
1250     {
1251         // Single line text entry (GtkTextEntry) doesn't have support for
1252         // getting the coordinates for the given offset. Perhaps we could
1253         // find them ourselves by using GetTextExtent() but for now just leave
1254         // it unimplemented, this function is more useful for multiline
1255         // controls anyhow.
1256         return wxDefaultPosition;
1257     }
1258
1259     // Window coordinates for the given position is calculated by getting
1260     // the buffer coordinates and converting them to window coordinates.
1261     GtkTextView *textview = GTK_TEXT_VIEW(m_text);
1262
1263     GtkTextIter iter;
1264     gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1265
1266     GdkRectangle bufferCoords;
1267     gtk_text_view_get_iter_location(textview, &iter, &bufferCoords);
1268
1269     gint winCoordX = 0,
1270          winCoordY = 0;
1271     gtk_text_view_buffer_to_window_coords(textview, GTK_TEXT_WINDOW_WIDGET,
1272                                           bufferCoords.x, bufferCoords.y,
1273                                           &winCoordX, &winCoordY);
1274
1275     return wxPoint(winCoordX, winCoordY);
1276 }
1277
1278 int wxTextCtrl::GetNumberOfLines() const
1279 {
1280     if ( IsMultiLine() )
1281     {
1282         return gtk_text_buffer_get_line_count( m_buffer );
1283     }
1284     else // single line
1285     {
1286         return 1;
1287     }
1288 }
1289
1290 void wxTextCtrl::SetInsertionPoint( long pos )
1291 {
1292     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1293
1294     if ( IsMultiLine() )
1295     {
1296         GtkTextIter iter;
1297         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1298         gtk_text_buffer_place_cursor( m_buffer, &iter );
1299         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1300         if (IsFrozen())
1301             // defer until Thaw, text view is not using m_buffer now
1302             m_showPositionOnThaw = mark;
1303         else
1304             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1305     }
1306     else // single line
1307     {
1308         wxTextEntry::SetInsertionPoint(pos);
1309     }
1310 }
1311
1312 void wxTextCtrl::SetEditable( bool editable )
1313 {
1314     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1315
1316     if ( IsMultiLine() )
1317     {
1318         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1319     }
1320     else // single line
1321     {
1322         wxTextEntry::SetEditable(editable);
1323     }
1324 }
1325
1326 bool wxTextCtrl::Enable( bool enable )
1327 {
1328     if (!wxWindowBase::Enable(enable))
1329     {
1330         // nothing to do
1331         return false;
1332     }
1333
1334     gtk_widget_set_sensitive( m_text, enable );
1335     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1336
1337     return true;
1338 }
1339
1340 void wxTextCtrl::MarkDirty()
1341 {
1342     m_modified = true;
1343 }
1344
1345 void wxTextCtrl::DiscardEdits()
1346 {
1347     m_modified = false;
1348 }
1349
1350 // ----------------------------------------------------------------------------
1351 // event handling
1352 // ----------------------------------------------------------------------------
1353
1354 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1355 {
1356     if ( enable )
1357     {
1358         g_signal_handlers_unblock_by_func(GetTextObject(),
1359             (gpointer)gtk_text_changed_callback, this);
1360     }
1361     else // disable events
1362     {
1363         g_signal_handlers_block_by_func(GetTextObject(),
1364             (gpointer)gtk_text_changed_callback, this);
1365     }
1366 }
1367
1368 bool wxTextCtrl::IgnoreTextUpdate()
1369 {
1370     if ( m_countUpdatesToIgnore > 0 )
1371     {
1372         m_countUpdatesToIgnore--;
1373
1374         return true;
1375     }
1376
1377     return false;
1378 }
1379
1380 bool wxTextCtrl::MarkDirtyOnChange()
1381 {
1382     if ( m_dontMarkDirty )
1383     {
1384         m_dontMarkDirty = false;
1385
1386         return false;
1387     }
1388
1389     return true;
1390 }
1391
1392 void wxTextCtrl::SetSelection( long from, long to )
1393 {
1394     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1395
1396     if ( IsMultiLine() )
1397     {
1398         if (from == -1 && to == -1)
1399         {
1400             from = 0;
1401             to = GetValue().length();
1402         }
1403
1404         GtkTextIter fromi, toi;
1405         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1406         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1407
1408         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1409     }
1410     else // single line
1411     {
1412         wxTextEntry::SetSelection(from, to);
1413     }
1414 }
1415
1416 void wxTextCtrl::ShowPosition( long pos )
1417 {
1418     if (IsMultiLine())
1419     {
1420         GtkTextIter iter;
1421         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1422         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1423         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1424         if (IsFrozen())
1425             // defer until Thaw, text view is not using m_buffer now
1426             m_showPositionOnThaw = mark;
1427         else
1428             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1429     }
1430 }
1431
1432 wxTextCtrlHitTestResult
1433 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1434 {
1435     if ( !IsMultiLine() )
1436     {
1437         // not supported
1438         return wxTE_HT_UNKNOWN;
1439     }
1440
1441     int x, y;
1442     gtk_text_view_window_to_buffer_coords
1443     (
1444         GTK_TEXT_VIEW(m_text),
1445         GTK_TEXT_WINDOW_TEXT,
1446         pt.x, pt.y,
1447         &x, &y
1448     );
1449
1450     GtkTextIter iter;
1451     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1452     if ( pos )
1453         *pos = gtk_text_iter_get_offset(&iter);
1454
1455     return wxTE_HT_ON_TEXT;
1456 }
1457
1458 long wxTextCtrl::GetInsertionPoint() const
1459 {
1460     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1461
1462     if ( IsMultiLine() )
1463     {
1464         // There is no direct accessor for the cursor, but
1465         // internally, the cursor is the "mark" called
1466         // "insert" in the text view's btree structure.
1467
1468         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1469         GtkTextIter cursor;
1470         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1471
1472         return gtk_text_iter_get_offset( &cursor );
1473     }
1474     else
1475     {
1476         return wxTextEntry::GetInsertionPoint();
1477     }
1478 }
1479
1480 wxTextPos wxTextCtrl::GetLastPosition() const
1481 {
1482     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1483
1484     int pos = 0;
1485
1486     if ( IsMultiLine() )
1487     {
1488         GtkTextIter end;
1489         gtk_text_buffer_get_end_iter( m_buffer, &end );
1490
1491         pos = gtk_text_iter_get_offset( &end );
1492     }
1493     else // single line
1494     {
1495         pos = wxTextEntry::GetLastPosition();
1496     }
1497
1498     return (long)pos;
1499 }
1500
1501 void wxTextCtrl::Remove( long from, long to )
1502 {
1503     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1504
1505     if ( IsMultiLine() )
1506     {
1507         GtkTextIter fromi, toi;
1508         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1509         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1510
1511         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1512     }
1513     else // single line
1514     {
1515         wxTextEntry::Remove(from, to);
1516     }
1517 }
1518
1519 void wxTextCtrl::Cut()
1520 {
1521     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1522
1523     if ( IsMultiLine() )
1524         g_signal_emit_by_name (m_text, "cut-clipboard");
1525     else
1526         wxTextEntry::Cut();
1527 }
1528
1529 void wxTextCtrl::Copy()
1530 {
1531     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1532
1533     if ( IsMultiLine() )
1534         g_signal_emit_by_name (m_text, "copy-clipboard");
1535     else
1536         wxTextEntry::Copy();
1537 }
1538
1539 void wxTextCtrl::Paste()
1540 {
1541     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1542
1543     if ( IsMultiLine() )
1544         g_signal_emit_by_name (m_text, "paste-clipboard");
1545     else
1546         wxTextEntry::Paste();
1547 }
1548
1549 // If the return values from and to are the same, there is no
1550 // selection.
1551 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1552 {
1553     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1554
1555     if ( !IsMultiLine() )
1556     {
1557         wxTextEntry::GetSelection(fromOut, toOut);
1558         return;
1559     }
1560
1561     gint from, to;
1562
1563     GtkTextIter ifrom, ito;
1564     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1565     {
1566         from = gtk_text_iter_get_offset(&ifrom);
1567         to = gtk_text_iter_get_offset(&ito);
1568
1569         if ( from > to )
1570         {
1571             // exchange them to be compatible with wxMSW
1572             gint tmp = from;
1573             from = to;
1574             to = tmp;
1575         }
1576     }
1577     else // no selection
1578     {
1579         from =
1580         to = GetInsertionPoint();
1581     }
1582
1583     if ( fromOut )
1584         *fromOut = from;
1585     if ( toOut )
1586         *toOut = to;
1587 }
1588
1589
1590 bool wxTextCtrl::IsEditable() const
1591 {
1592     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1593
1594     if ( IsMultiLine() )
1595     {
1596         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text)) != 0;
1597     }
1598     else
1599     {
1600         return wxTextEntry::IsEditable();
1601     }
1602 }
1603
1604 bool wxTextCtrl::IsModified() const
1605 {
1606     return m_modified;
1607 }
1608
1609 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1610 {
1611     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1612
1613     if ( key_event.GetKeyCode() == WXK_RETURN )
1614     {
1615         if ( HasFlag(wxTE_PROCESS_ENTER) )
1616         {
1617             wxCommandEvent event(wxEVT_TEXT_ENTER, m_windowId);
1618             event.SetEventObject(this);
1619             event.SetString(GetValue());
1620             if ( HandleWindowEvent(event) )
1621                 return;
1622         }
1623     }
1624
1625     key_event.Skip();
1626 }
1627
1628 GtkWidget* wxTextCtrl::GetConnectWidget()
1629 {
1630     return GTK_WIDGET(m_text);
1631 }
1632
1633 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1634 {
1635     if ( IsMultiLine() )
1636     {
1637         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1638                                         GTK_TEXT_WINDOW_TEXT );
1639     }
1640     else
1641     {
1642 #ifdef __WXGTK3__
1643         // no access to internal GdkWindows
1644         return NULL;
1645 #else
1646         return gtk_entry_get_text_window(GTK_ENTRY(m_text));
1647 #endif
1648     }
1649 }
1650
1651 // the font will change for subsequent text insertiongs
1652 bool wxTextCtrl::SetFont( const wxFont &font )
1653 {
1654     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1655
1656     if ( !wxTextCtrlBase::SetFont(font) )
1657     {
1658         // font didn't change, nothing to do
1659         return false;
1660     }
1661
1662     if ( IsMultiLine() )
1663     {
1664         SetUpdateFont(true);
1665
1666         m_defaultStyle.SetFont(font);
1667
1668         ChangeFontGlobally();
1669     }
1670
1671     return true;
1672 }
1673
1674 void wxTextCtrl::ChangeFontGlobally()
1675 {
1676     // this method is very inefficient and hence should be called as rarely as
1677     // possible!
1678     //
1679     // TODO: it can be implemented much more efficiently for GTK2
1680     wxASSERT_MSG( IsMultiLine(),
1681                   wxT("shouldn't be called for single line controls") );
1682
1683     wxString value = GetValue();
1684     if ( !value.empty() )
1685     {
1686         SetUpdateFont(false);
1687
1688         Clear();
1689         AppendText(value);
1690     }
1691 }
1692
1693 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1694 {
1695     if ( !wxControl::SetForegroundColour(colour) )
1696         return false;
1697
1698     // update default fg colour too
1699     m_defaultStyle.SetTextColour(colour);
1700
1701     return true;
1702 }
1703
1704 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1705 {
1706     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1707
1708     if ( !wxControl::SetBackgroundColour( colour ) )
1709         return false;
1710
1711     if (!m_backgroundColour.IsOk())
1712         return false;
1713
1714     // change active background color too
1715     m_defaultStyle.SetBackgroundColour( colour );
1716
1717     return true;
1718 }
1719
1720 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1721 {
1722     if ( IsMultiLine() )
1723     {
1724         if ( style.IsDefault() )
1725         {
1726             // nothing to do
1727             return true;
1728         }
1729
1730         gint l = gtk_text_buffer_get_char_count( m_buffer );
1731
1732         wxCHECK_MSG( start >= 0 && end <= l, false,
1733                      wxT("invalid range in wxTextCtrl::SetStyle") );
1734
1735         GtkTextIter starti, endi;
1736         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1737         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1738
1739         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1740
1741         return true;
1742     }
1743     //else: single line text controls don't support styles
1744
1745     return false;
1746 }
1747
1748 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
1749 {
1750     if ( !IsMultiLine() )
1751     {
1752         // no styles for GtkEntry
1753         return false;
1754     }
1755
1756     gint l = gtk_text_buffer_get_char_count( m_buffer );
1757
1758     wxCHECK_MSG( position >= 0 && position <= l, false,
1759                  wxT("invalid range in wxTextCtrl::GetStyle") );
1760
1761     GtkTextIter positioni;
1762     gtk_text_buffer_get_iter_at_offset(m_buffer, &positioni, position);
1763
1764     // Obtain a copy of the default attributes
1765     GtkTextAttributes * const
1766         pattr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(m_text));
1767     wxON_BLOCK_EXIT1(gtk_text_attributes_unref, pattr);
1768
1769     // And query GTK for the attributes at the given position using it as base
1770     if ( !gtk_text_iter_get_attributes(&positioni, pattr) )
1771     {
1772         style = m_defaultStyle;
1773     }
1774     else // have custom attributes
1775     {
1776         style.SetBackgroundColour(pattr->appearance.bg_color);
1777         style.SetTextColour(pattr->appearance.fg_color);
1778
1779         const wxGtkString
1780             pangoFontString(pango_font_description_to_string(pattr->font));
1781
1782         wxFont font;
1783         if ( font.SetNativeFontInfo(wxString(pangoFontString)) )
1784             style.SetFont(font);
1785
1786         // TODO: set alignment, tabs and indents
1787     }
1788
1789     return true;
1790 }
1791
1792 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1793 {
1794     GTKApplyStyle(m_text, style);
1795 }
1796
1797 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1798 {
1799     Cut();
1800 }
1801
1802 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1803 {
1804     Copy();
1805 }
1806
1807 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1808 {
1809     Paste();
1810 }
1811
1812 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1813 {
1814     Undo();
1815 }
1816
1817 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1818 {
1819     Redo();
1820 }
1821
1822 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1823 {
1824     event.Enable( CanCut() );
1825 }
1826
1827 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1828 {
1829     event.Enable( CanCopy() );
1830 }
1831
1832 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1833 {
1834     event.Enable( CanPaste() );
1835 }
1836
1837 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1838 {
1839     event.Enable( CanUndo() );
1840 }
1841
1842 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1843 {
1844     event.Enable( CanRedo() );
1845 }
1846
1847 wxSize wxTextCtrl::DoGetBestSize() const
1848 {
1849     return DoGetSizeFromTextSize(80);
1850 }
1851
1852 wxSize wxTextCtrl::DoGetSizeFromTextSize(int xlen, int ylen) const
1853 {
1854     wxASSERT_MSG( m_widget, wxS("GetSizeFromTextSize called before creation") );
1855
1856     wxSize tsize(xlen, 0);
1857     int cHeight = GetCharHeight();
1858
1859     if ( IsSingleLine() )
1860     {
1861         if ( HasFlag(wxBORDER_NONE) )
1862         {
1863             tsize.y = cHeight;
1864 #ifdef __WXGTK3__
1865             tsize.IncBy(9, 0);
1866 #else
1867             tsize.IncBy(4, 0);
1868 #endif // GTK3
1869         }
1870         else
1871         {
1872             // default height
1873             tsize.y = GTKGetPreferredSize(m_widget).y;
1874             // Add the margins we have previously set, but only the horizontal border
1875             // as vertical one has been taken account at GTKGetPreferredSize().
1876             // Also get other GTK+ margins.
1877             tsize.IncBy( GTKGetEntryMargins(GetEntry()).x, 0);
1878         }
1879     }
1880
1881     //multiline
1882     else
1883     {
1884         // add space for vertical scrollbar
1885         if ( m_scrollBar[1] && !(m_windowStyle & wxTE_NO_VSCROLL) )
1886             tsize.IncBy(GTKGetPreferredSize(GTK_WIDGET(m_scrollBar[1])).x + 3, 0);
1887
1888         // height
1889         tsize.y = cHeight;
1890         if ( ylen <= 0 )
1891         {
1892             tsize.y = 1 + cHeight * wxMax(wxMin(GetNumberOfLines(), 10), 2);
1893             // add space for horizontal scrollbar
1894             if ( m_scrollBar[0] && (m_windowStyle & wxHSCROLL) )
1895                 tsize.IncBy(0, GTKGetPreferredSize(GTK_WIDGET(m_scrollBar[0])).y + 3);
1896         }
1897
1898         if ( !HasFlag(wxBORDER_NONE) )
1899         {
1900             // hardcode borders, margins, etc
1901             tsize.IncBy(5, 4);
1902         }
1903     }
1904
1905     // Perhaps the user wants something different from CharHeight, or ylen
1906     // is used as the height of a multiline text.
1907     if ( ylen > 0 )
1908         tsize.IncBy(0, ylen - cHeight);
1909
1910     return tsize;
1911 }
1912
1913
1914 // ----------------------------------------------------------------------------
1915 // freeze/thaw
1916 // ----------------------------------------------------------------------------
1917
1918 void wxTextCtrl::DoFreeze()
1919 {
1920     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1921
1922     GTKFreezeWidget(m_text);
1923
1924     if ( HasFlag(wxTE_MULTILINE) )
1925     {
1926         // removing buffer dramatically speeds up insertion:
1927         g_object_ref(m_buffer);
1928         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1929         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1930         // gtk_text_view_set_buffer adds its own reference
1931         g_object_unref(buf_new);
1932         // These marks should be deleted when the buffer is changed,
1933         // but they are not (in GTK+ up to at least 3.0.1).
1934         // Otherwise these anonymous marks start to build up in the buffer,
1935         // and Freeze takes longer and longer each time it is called.
1936         if (m_anonymousMarkList)
1937         {
1938             for (GSList* item = m_anonymousMarkList; item; item = item->next)
1939             {
1940                 GtkTextMark* mark = static_cast<GtkTextMark*>(item->data);
1941                 if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1942                     gtk_text_buffer_delete_mark(m_buffer, mark);
1943             }
1944             g_slist_free(m_anonymousMarkList);
1945             m_anonymousMarkList = NULL;
1946         }
1947     }
1948 }
1949
1950 void wxTextCtrl::DoThaw()
1951 {
1952     if ( HasFlag(wxTE_MULTILINE) )
1953     {
1954         // reattach buffer:
1955         gulong sig_id = g_signal_connect(m_buffer, "mark_set", G_CALLBACK(mark_set), &m_anonymousMarkList);
1956         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1957         g_object_unref(m_buffer);
1958         g_signal_handler_disconnect(m_buffer, sig_id);
1959
1960         if (m_showPositionOnThaw != NULL)
1961         {
1962             gtk_text_view_scroll_mark_onscreen(
1963                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1964             m_showPositionOnThaw = NULL;
1965         }
1966     }
1967
1968     GTKThawWidget(m_text);
1969 }
1970
1971 // ----------------------------------------------------------------------------
1972 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1973 // ----------------------------------------------------------------------------
1974
1975 // FIXME: when dragging on a link the sample gets an "Unknown event".
1976 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1977 // a buggy sample, or something else
1978 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1979 {
1980     event.Skip();
1981     if( !HasFlag(wxTE_AUTO_URL) )
1982         return;
1983
1984     gint x, y;
1985     GtkTextIter start, end;
1986     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1987                                                 "wxUrl");
1988
1989     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1990                                           event.GetX(), event.GetY(), &x, &y);
1991
1992     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1993     if (!gtk_text_iter_has_tag(&end, tag))
1994     {
1995         SetCursor(wxCursor(wxCURSOR_IBEAM));
1996         return;
1997     }
1998
1999     SetCursor(wxCursor(wxCURSOR_HAND));
2000
2001     start = end;
2002     if(!gtk_text_iter_begins_tag(&start, tag))
2003         gtk_text_iter_backward_to_tag_toggle(&start, tag);
2004     if(!gtk_text_iter_ends_tag(&end, tag))
2005         gtk_text_iter_forward_to_tag_toggle(&end, tag);
2006
2007     // Native context menu is probably not desired on an URL.
2008     // Consider making this dependent on ProcessEvent(wxTextUrlEvent) return value
2009     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
2010         event.Skip(false);
2011
2012     wxTextUrlEvent url_event(m_windowId, event,
2013                              gtk_text_iter_get_offset(&start),
2014                              gtk_text_iter_get_offset(&end));
2015
2016     InitCommandEvent(url_event);
2017     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
2018     //event.Skip(!HandleWindowEvent(url_event));
2019     HandleWindowEvent(url_event);
2020 }
2021
2022 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
2023 {
2024     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
2025
2026     // GtkTextView starts a drag operation when left mouse button is pressed
2027     // and ends it when it is released and if it doesn't get the release event
2028     // the next click on a control results in an assertion failure inside
2029     // gtk_text_view_start_selection_drag() which simply *kills* the program
2030     // without anything we can do about it, so always let GTK+ have this event
2031     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
2032 }
2033
2034 // static
2035 wxVisualAttributes
2036 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
2037 {
2038     return GetDefaultAttributesFromGTKWidget(gtk_entry_new(), true);
2039 }
2040
2041 #endif // wxUSE_TEXTCTRL