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/strconv.h"
  26 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <ctype.h>
  31
  32 #include "wx/gtk/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter * WXUNUSED(start),
  42                              GtkTextIter * WXUNUSED(end),
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // remove all tags starting with the given prefix from the start..end range
  57 static void
  58 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  59                               const char *prefix,
  60                               GtkTextIter *start,
  61                               GtkTextIter *end)
  62 {
  63     gulong remove_handler_id = g_signal_connect
  64                                (
  65                                 text_buffer,
  66                                 "remove_tag",
  67                                 G_CALLBACK(wxGtkOnRemoveTag),
  68                                 gpointer(prefix)
  69                                );
  70     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  71     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  72 }
  73
  74 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  75                                        GtkTextBuffer *text_buffer,
  76                                        const wxTextAttr& attr,
  77                                        GtkTextIter *start,
  78                                        GtkTextIter *end)
  79 {
  80     static gchar buf[1024];
  81     GtkTextTag *tag;
  82
  83     if (attr.HasFont())
  84     {
  85         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  86
  87         wxFont font(attr.GetFont());
  88
  89         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  90         wxGtkString font_string(pango_font_description_to_string(font_description));
  91         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  92         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  93                                          buf );
  94         if (!tag)
  95             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  96                                               "font-desc", font_description,
  97                                               NULL );
  98         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  99
 100         if (font.GetUnderlined())
 101         {
 102             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 103             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 104                                              buf );
 105             if (!tag)
 106                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 107                                                   "underline-set", TRUE,
 108                                                   "underline", PANGO_UNDERLINE_SINGLE,
 109                                                   NULL );
 110             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 111         }
 112     }
 113
 114     if (attr.HasTextColour())
 115     {
 116         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 117
 118         const GdkColor *colFg = attr.GetTextColour().GetColor();
 119         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 120                    colFg->red, colFg->green, colFg->blue);
 121         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 122                                          buf );
 123         if (!tag)
 124             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 125                                               "foreground-gdk", colFg, NULL );
 126         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 127     }
 128
 129     if (attr.HasBackgroundColour())
 130     {
 131         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 132
 133         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 134         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 135                    colBg->red, colBg->green, colBg->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                                               "background-gdk", colBg, NULL );
 141         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 142     }
 143
 144     if (attr.HasAlignment())
 145     {
 146         GtkTextIter para_start, para_end = *end;
 147         gtk_text_buffer_get_iter_at_line( text_buffer,
 148                                           &para_start,
 149                                           gtk_text_iter_get_line(start) );
 150         gtk_text_iter_forward_line(&para_end);
 151
 152         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 153
 154         GtkJustification align;
 155         switch (attr.GetAlignment())
 156         {
 157             default:
 158                 align = GTK_JUSTIFY_LEFT;
 159                 break;
 160             case wxTEXT_ALIGNMENT_RIGHT:
 161                 align = GTK_JUSTIFY_RIGHT;
 162                 break;
 163             case wxTEXT_ALIGNMENT_CENTER:
 164                 align = GTK_JUSTIFY_CENTER;
 165                 break;
 166 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 167 // (but if new enough pango isn't available it's a mere gtk warning)
 168 #if GTK_CHECK_VERSION(2,11,0)
 169             case wxTEXT_ALIGNMENT_JUSTIFIED:
 170                 if (!gtk_check_version(2,11,0))
 171                     align = GTK_JUSTIFY_FILL;
 172                 else
 173                     align = GTK_JUSTIFY_LEFT;
 174                 break;
 175 #endif
 176         }
 177
 178         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 179         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 180                                          buf );
 181         if (!tag)
 182             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 183                                               "justification", align, NULL );
 184         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 185     }
 186
 187     if (attr.HasLeftIndent())
 188     {
 189         // Indentation attribute
 190
 191         // Clear old indentation tags
 192         GtkTextIter para_start, para_end = *end;
 193         gtk_text_buffer_get_iter_at_line( text_buffer,
 194                                           &para_start,
 195                                           gtk_text_iter_get_line(start) );
 196         gtk_text_iter_forward_line(&para_end);
 197
 198         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 199
 200         // Convert indent from 1/10th of a mm into pixels
 201         float factor;
 202 #if GTK_CHECK_VERSION(2,2,0)
 203         if (!gtk_check_version(2,2,0))
 204             factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 205                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 206         else
 207 #endif
 208             factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 209
 210         const int indent = (int)(factor * attr.GetLeftIndent());
 211         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 212
 213         gint gindent;
 214         gint gsubindent;
 215
 216         if (subIndent >= 0)
 217         {
 218             gindent = indent;
 219             gsubindent = -subIndent;
 220         }
 221         else
 222         {
 223             gindent = -subIndent;
 224             gsubindent = indent;
 225         }
 226
 227         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 228         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 229                                         buf );
 230         if (!tag)
 231             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 232                                               "left-margin", gindent, "indent", gsubindent, NULL );
 233         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 234     }
 235
 236     if (attr.HasTabs())
 237     {
 238         // Set tab stops
 239
 240         // Clear old tabs
 241         GtkTextIter para_start, para_end = *end;
 242         gtk_text_buffer_get_iter_at_line( text_buffer,
 243                                           &para_start,
 244                                           gtk_text_iter_get_line(start) );
 245         gtk_text_iter_forward_line(&para_end);
 246
 247         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 248
 249         const wxArrayInt& tabs = attr.GetTabs();
 250
 251         wxString tagname = _T("WXTABS");
 252         g_snprintf(buf, sizeof(buf), "WXTABS");
 253         for (size_t i = 0; i < tabs.GetCount(); i++)
 254             tagname += wxString::Format(_T(" %d"), tabs[i]);
 255
 256         const wxWX2MBbuf buftag = tagname.utf8_str();
 257
 258         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 259                                         buftag );
 260         if (!tag)
 261         {
 262             // Factor to convert from 1/10th of a mm into pixels
 263             float factor;
 264 #if GTK_CHECK_VERSION(2,2,0)
 265             if (!gtk_check_version(2,2,0))
 266                 factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 267                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 268             else
 269 #endif
 270                 factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 271
 272             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 273             for (size_t i = 0; i < tabs.GetCount(); i++)
 274                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 275             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 276                                               "tabs", tabArray, NULL );
 277             pango_tab_array_free(tabArray);
 278         }
 279         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 280     }
 281 }
 282
 283 static void wxGtkTextInsert(GtkWidget *text,
 284                             GtkTextBuffer *text_buffer,
 285                             const wxTextAttr& attr,
 286                             const wxCharBuffer& buffer)
 287
 288 {
 289     gint start_offset;
 290     GtkTextIter iter, start;
 291
 292     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 293                                      gtk_text_buffer_get_insert (text_buffer) );
 294     start_offset = gtk_text_iter_get_offset (&iter);
 295     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 296
 297     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 298
 299     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 300 }
 301
 302 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 303
 304 extern "C" {
 305 static void
 306 au_apply_tag_callback(GtkTextBuffer *buffer,
 307                       GtkTextTag *tag,
 308                       GtkTextIter * WXUNUSED(start),
 309                       GtkTextIter * WXUNUSED(end),
 310                       gpointer WXUNUSED(textctrl))
 311 {
 312     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 313         g_signal_stop_emission_by_name (buffer, "apply_tag");
 314 }
 315 }
 316
 317 //-----------------------------------------------------------------------------
 318 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 319 //-----------------------------------------------------------------------------
 320
 321 extern "C" {
 322 static gboolean
 323 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 324 {
 325     return g_unichar_isspace(ch);
 326 }
 327 }
 328
 329 extern "C" {
 330 static gboolean
 331 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 332 {
 333     return !g_unichar_isspace(ch);
 334 }
 335 }
 336
 337 extern "C" {
 338 static gboolean
 339 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 340 {
 341     return !g_unichar_ispunct(ch);
 342 }
 343 }
 344
 345 extern "C" {
 346 static gboolean
 347 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 348 {
 349     return !g_unichar_ispunct(ch) || ch == '/';
 350 }
 351 }
 352
 353 //-----------------------------------------------------------------------------
 354 //  Check for links between s and e and correct tags as necessary
 355 //-----------------------------------------------------------------------------
 356
 357 // This function should be made match better while being efficient at one point.
 358 // Most probably with a row of regular expressions.
 359 extern "C" {
 360 static void
 361 au_check_word( GtkTextIter *s, GtkTextIter *e )
 362 {
 363     static const char *URIPrefixes[] =
 364     {
 365         "http://",
 366         "ftp://",
 367         "www.",
 368         "ftp.",
 369         "mailto://",
 370         "https://",
 371         "file://",
 372         "nntp://",
 373         "news://",
 374         "telnet://",
 375         "mms://",
 376         "gopher://",
 377         "prospero://",
 378         "wais://",
 379     };
 380
 381     GtkTextIter start = *s, end = *e;
 382     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 383
 384     // Get our special link tag
 385     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 386
 387     // Get rid of punctuation from beginning and end.
 388     // Might want to move this to au_check_range if an improved link checking doesn't
 389     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 390     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 391         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 392
 393     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 394     gtk_text_iter_forward_char(&end);
 395
 396     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 397     size_t len = strlen(text), prefix_len;
 398     size_t n;
 399
 400     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 401     {
 402         prefix_len = strlen(URIPrefixes[n]);
 403         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 404             break;
 405     }
 406
 407     if(n < WXSIZEOF(URIPrefixes))
 408     {
 409         gulong signal_id = g_signal_handler_find (buffer,
 410                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 411                                                   0, 0, NULL,
 412                                                   (gpointer)au_apply_tag_callback, NULL);
 413
 414         g_signal_handler_block (buffer, signal_id);
 415         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 416         g_signal_handler_unblock (buffer, signal_id);
 417     }
 418 }
 419 }
 420
 421 extern "C" {
 422 static void
 423 au_check_range(GtkTextIter *s,
 424                GtkTextIter *range_end)
 425 {
 426     GtkTextIter range_start = *s;
 427     GtkTextIter word_end;
 428     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 429     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 430
 431     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 432
 433     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 434         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 435
 436     while(!gtk_text_iter_equal(&range_start, range_end))
 437     {
 438         word_end = range_start;
 439         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 440
 441         // Now we should have a word delimited by range_start and word_end, correct link tags
 442         au_check_word(&range_start, &word_end);
 443
 444         range_start = word_end;
 445         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 446     }
 447 }
 448 }
 449
 450 //-----------------------------------------------------------------------------
 451 //  "insert-text" for GtkTextBuffer
 452 //-----------------------------------------------------------------------------
 453
 454 extern "C" {
 455 static void
 456 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 457                         GtkTextIter *end,
 458                         gchar *text,
 459                         gint len,
 460                         wxTextCtrl *win)
 461 {
 462     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 463         return;
 464
 465     GtkTextIter start = *end;
 466     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 467
 468     GtkTextIter line_start = start;
 469     GtkTextIter line_end = *end;
 470     GtkTextIter words_start = start;
 471     GtkTextIter words_end = *end;
 472
 473     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 474     gtk_text_iter_forward_to_line_end(&line_end);
 475     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 476     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 477
 478     au_check_range(&words_start, &words_end);
 479 }
 480 }
 481
 482 //-----------------------------------------------------------------------------
 483 //  "delete-range" for GtkTextBuffer
 484 //-----------------------------------------------------------------------------
 485
 486 extern "C" {
 487 static void
 488 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 489                          GtkTextIter *start,
 490                          GtkTextIter *end,
 491                          wxTextCtrl *win)
 492 {
 493     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 494         return;
 495
 496     GtkTextIter line_start = *start, line_end = *end;
 497
 498     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 499     gtk_text_iter_forward_to_line_end(&line_end);
 500     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 501     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 502
 503     au_check_range(start, end);
 504 }
 505 }
 506
 507
 508 //-----------------------------------------------------------------------------
 509 //  "changed"
 510 //-----------------------------------------------------------------------------
 511
 512 extern "C" {
 513 static void
 514 gtk_text_changed_callback( GtkWidget * WXUNUSED(widget), wxTextCtrl *win )
 515 {
 516     if ( win->IgnoreTextUpdate() )
 517         return;
 518
 519     if (!win->m_hasVMT) return;
 520
 521     if ( win->MarkDirtyOnChange() )
 522         win->MarkDirty();
 523
 524     win->SendTextUpdatedEvent();
 525 }
 526 }
 527
 528 //-----------------------------------------------------------------------------
 529 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 530 //-----------------------------------------------------------------------------
 531
 532 // common part of the event handlers below
 533 static void
 534 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 535                                 wxEventType eventType, const gchar * signal_name)
 536 {
 537     wxClipboardTextEvent event( eventType, win->GetId() );
 538     event.SetEventObject( win );
 539     if ( win->GetEventHandler()->ProcessEvent( event ) )
 540     {
 541         // don't let the default processing to take place if we did something
 542         // ourselves in the event handler
 543         g_signal_stop_emission_by_name (widget, signal_name);
 544     }
 545 }
 546
 547 extern "C" {
 548 static void
 549 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 550 {
 551     handle_text_clipboard_callback(
 552         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 553 }
 554
 555 static void
 556 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 557 {
 558     handle_text_clipboard_callback(
 559         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 560 }
 561
 562 static void
 563 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 564 {
 565     handle_text_clipboard_callback(
 566         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 567 }
 568 }
 569
 570 //-----------------------------------------------------------------------------
 571 // "expose_event" from scrolled window and textview
 572 //-----------------------------------------------------------------------------
 573
 574 extern "C" {
 575 static gboolean
 576 gtk_text_exposed_callback( GtkWidget * WXUNUSED(widget),
 577                            GdkEventExpose * WXUNUSED(event),
 578                            wxTextCtrl * WXUNUSED(win) )
 579 {
 580     return TRUE;
 581 }
 582 }
 583
 584
 585 //-----------------------------------------------------------------------------
 586 //  wxTextCtrl
 587 //-----------------------------------------------------------------------------
 588
 589 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 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_freezeCount = 0;
 628     m_showPositionOnThaw = NULL;
 629     m_gdkHandCursor = NULL;
 630     m_gdkXTermCursor = NULL;
 631 }
 632
 633 wxTextCtrl::~wxTextCtrl()
 634 {
 635     if(m_gdkHandCursor)
 636         gdk_cursor_unref(m_gdkHandCursor);
 637     if(m_gdkXTermCursor)
 638         gdk_cursor_unref(m_gdkXTermCursor);
 639 }
 640
 641 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 642                         wxWindowID id,
 643                         const wxString &value,
 644                         const wxPoint &pos,
 645                         const wxSize &size,
 646                         long style,
 647                         const wxValidator& validator,
 648                         const wxString &name )
 649 {
 650     Init();
 651
 652     Create( parent, id, value, pos, size, style, validator, name );
 653 }
 654
 655 bool wxTextCtrl::Create( wxWindow *parent,
 656                          wxWindowID id,
 657                          const wxString &value,
 658                          const wxPoint &pos,
 659                          const wxSize &size,
 660                          long style,
 661                          const wxValidator& validator,
 662                          const wxString &name )
 663 {
 664     if (!PreCreation( parent, pos, size ) ||
 665         !CreateBase( parent, id, pos, size, style, validator, name ))
 666     {
 667         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 668         return false;
 669     }
 670
 671     bool multi_line = (style & wxTE_MULTILINE) != 0;
 672
 673     if (multi_line)
 674     {
 675         // Create view
 676         m_text = gtk_text_view_new();
 677
 678         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 679
 680         // create "ShowPosition" marker
 681         GtkTextIter iter;
 682         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 683         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 684
 685         // create scrolled window
 686         m_widget = gtk_scrolled_window_new( NULL, NULL );
 687         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 688                                         GTK_POLICY_AUTOMATIC,
 689                                         style & wxTE_NO_VSCROLL
 690                                             ? GTK_POLICY_NEVER
 691                                             : GTK_POLICY_AUTOMATIC );
 692         // for ScrollLines/Pages
 693         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 694
 695         // Insert view into scrolled window
 696         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 697
 698         GTKSetWrapMode();
 699
 700         GtkScrolledWindowSetBorder(m_widget, style);
 701
 702         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 703
 704         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 705     }
 706     else
 707     {
 708         // a single-line text control: no need for scrollbars
 709         m_widget =
 710         m_text = gtk_entry_new();
 711
 712         if (style & wxNO_BORDER)
 713             g_object_set (m_text, "has-frame", FALSE, NULL);
 714     }
 715
 716     m_parent->DoAddChild( this );
 717
 718     m_focusWidget = m_text;
 719
 720     PostCreation(size);
 721
 722     if (multi_line)
 723     {
 724         gtk_widget_show(m_text);
 725     }
 726
 727     // We want to be notified about text changes.
 728     if (multi_line)
 729     {
 730         g_signal_connect (m_buffer, "changed",
 731                           G_CALLBACK (gtk_text_changed_callback), this);
 732     }
 733     else
 734     {
 735         g_signal_connect (m_text, "changed",
 736                           G_CALLBACK (gtk_text_changed_callback), this);
 737     }
 738
 739     if (!value.empty())
 740     {
 741         SetValue( value );
 742     }
 743
 744     if (style & wxTE_PASSWORD)
 745         GTKSetVisibility();
 746
 747     if (style & wxTE_READONLY)
 748         GTKSetEditable();
 749
 750     // left justification (alignment) is the default anyhow
 751     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 752         GTKSetJustification();
 753
 754     if (multi_line)
 755     {
 756         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 757         if (style & wxTE_AUTO_URL)
 758         {
 759             GtkTextIter start, end;
 760             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 761             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 762
 763             // We create our wxUrl tag here for slight efficiency gain - we
 764             // don't have to check for the tag existance in callbacks,
 765             // hereby it's guaranteed to exist.
 766             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 767                                        "foreground", "blue",
 768                                        "underline", PANGO_UNDERLINE_SINGLE,
 769                                        NULL);
 770
 771             // Check for URLs after each text change
 772             g_signal_connect_after (m_buffer, "insert_text",
 773                                     G_CALLBACK (au_insert_text_callback), this);
 774             g_signal_connect_after (m_buffer, "delete_range",
 775                                     G_CALLBACK (au_delete_range_callback), this);
 776
 777             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 778             // block this callback temporarily. This takes care of gtk+ internal
 779             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 780             // which is undesired because only a part of the URL might be copied.
 781             // The insert-text signal emitted inside it will take care of newly formed
 782             // or wholly copied URLs.
 783             g_signal_connect (m_buffer, "apply_tag",
 784                               G_CALLBACK (au_apply_tag_callback), NULL);
 785
 786             // Check for URLs in the initial string passed to Create
 787             gtk_text_buffer_get_start_iter(m_buffer, &start);
 788             gtk_text_buffer_get_end_iter(m_buffer, &end);
 789             au_check_range(&start, &end);
 790         }
 791     }
 792
 793     g_signal_connect (m_text, "copy-clipboard",
 794                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 795     g_signal_connect (m_text, "cut-clipboard",
 796                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 797     g_signal_connect (m_text, "paste-clipboard",
 798                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 799
 800     m_cursor = wxCursor( wxCURSOR_IBEAM );
 801
 802     return true;
 803 }
 804
 805 GtkEditable *wxTextCtrl::GetEditable() const
 806 {
 807     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 808
 809     return GTK_EDITABLE(m_text);
 810 }
 811
 812 // ----------------------------------------------------------------------------
 813 // flags handling
 814 // ----------------------------------------------------------------------------
 815
 816 void wxTextCtrl::GTKSetEditable()
 817 {
 818     gboolean editable = !HasFlag(wxTE_READONLY);
 819     if ( IsSingleLine() )
 820         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 821     else
 822         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 823 }
 824
 825 void wxTextCtrl::GTKSetVisibility()
 826 {
 827     // VZ: shouldn't we assert if wxTE_PASSWORD is set for multiline control?
 828     if ( IsSingleLine() )
 829         gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 830 }
 831
 832 void wxTextCtrl::GTKSetWrapMode()
 833 {
 834     // no wrapping in single line controls
 835     if ( !IsMultiLine() )
 836         return;
 837
 838     // translate wx wrapping style to GTK+
 839     GtkWrapMode wrap;
 840     if ( HasFlag( wxTE_DONTWRAP ) )
 841         wrap = GTK_WRAP_NONE;
 842     else if ( HasFlag( wxTE_CHARWRAP ) )
 843         wrap = GTK_WRAP_CHAR;
 844     else if ( HasFlag( wxTE_WORDWRAP ) )
 845         wrap = GTK_WRAP_WORD;
 846     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 847     {
 848         // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 849 #ifdef __WXGTK24__
 850         if ( !gtk_check_version(2,4,0) )
 851         {
 852             wrap = GTK_WRAP_WORD_CHAR;
 853         }
 854         else
 855 #endif // __WXGTK24__
 856         wrap = GTK_WRAP_WORD;
 857     }
 858
 859     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 860 }
 861
 862 void wxTextCtrl::GTKSetJustification()
 863 {
 864     if ( IsMultiLine() )
 865     {
 866         GtkJustification just;
 867         if ( HasFlag(wxTE_RIGHT) )
 868             just = GTK_JUSTIFY_RIGHT;
 869         else if ( HasFlag(wxTE_CENTRE) )
 870             just = GTK_JUSTIFY_CENTER;
 871         else // wxTE_LEFT == 0
 872             just = GTK_JUSTIFY_LEFT;
 873
 874         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 875     }
 876     else // single line
 877     {
 878 #ifdef __WXGTK24__
 879         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 880         if (!gtk_check_version(2,4,0))
 881         {
 882             gfloat align;
 883             if ( HasFlag(wxTE_RIGHT) )
 884                 align = 1.0;
 885             else if ( HasFlag(wxTE_CENTRE) )
 886                 align = 0.5;
 887             else // single line
 888                 align = 0.0;
 889
 890             gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 891         }
 892 #endif // __WXGTK24__
 893     }
 894
 895 }
 896
 897 void wxTextCtrl::SetWindowStyleFlag(long style)
 898 {
 899     long styleOld = GetWindowStyleFlag();
 900
 901     wxTextCtrlBase::SetWindowStyleFlag(style);
 902
 903     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 904         GTKSetEditable();
 905
 906     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 907         GTKSetVisibility();
 908
 909     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 910     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 911         GTKSetWrapMode();
 912
 913     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 914     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 915         GTKSetJustification();
 916 }
 917
 918 // ----------------------------------------------------------------------------
 919 // control value
 920 // ----------------------------------------------------------------------------
 921
 922 wxString wxTextCtrl::GetValue() const
 923 {
 924     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 925
 926     if ( IsMultiLine() )
 927     {
 928         GtkTextIter start;
 929         gtk_text_buffer_get_start_iter( m_buffer, &start );
 930         GtkTextIter end;
 931         gtk_text_buffer_get_end_iter( m_buffer, &end );
 932         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 933
 934         return wxGTK_CONV_BACK(text);
 935     }
 936     else // single line
 937     {
 938         return wxTextEntry::GetValue();
 939     }
 940 }
 941
 942 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 943 {
 944     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 945     // encoding?
 946
 947     // first check the default text style (we intentionally don't check the
 948     // style for the current position as it doesn't make sense for SetValue())
 949     const wxTextAttr& style = GetDefaultStyle();
 950     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 951                                          : wxFONTENCODING_SYSTEM;
 952
 953     // fall back to the controls font if no style
 954     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 955         enc = GetFont().GetEncoding();
 956
 957     return enc;
 958 }
 959
 960 bool wxTextCtrl::IsEmpty() const
 961 {
 962     if ( IsMultiLine() )
 963         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 964
 965     return wxTextEntry::IsEmpty();
 966 }
 967
 968 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 969 {
 970     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 971
 972     m_modified = false;
 973
 974     if ( !IsMultiLine() )
 975     {
 976         wxTextEntry::DoSetValue(value, flags);
 977         return;
 978     }
 979
 980     wxFontEncoding enc = m_defaultStyle.HasFont()
 981                             ? m_defaultStyle.GetFont().GetEncoding()
 982                             : wxFONTENCODING_SYSTEM;
 983     if ( enc == wxFONTENCODING_SYSTEM )
 984         enc = GetTextEncoding();
 985
 986     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 987     if ( !buffer )
 988     {
 989         // see comment in WriteText() as to why we must warn the user about
 990         // this
 991         wxLogWarning(_("Failed to set text in the text control."));
 992         return;
 993     }
 994
 995     if ( !(flags & SetValue_SendEvent) )
 996     {
 997         EnableTextChangedEvents(false);
 998     }
 999
1000     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1001
1002     if ( !m_defaultStyle.IsDefault() )
1003     {
1004         GtkTextIter start, end;
1005         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1006         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1007                                    &start, &end);
1008     }
1009
1010     if ( !(flags & SetValue_SendEvent) )
1011     {
1012         EnableTextChangedEvents(true);
1013     }
1014
1015     // This was added after discussion on the list
1016     SetInsertionPoint(0);
1017 }
1018
1019 void wxTextCtrl::WriteText( const wxString &text )
1020 {
1021     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1022
1023     // we're changing the text programmatically
1024     DontMarkDirtyOnNextChange();
1025
1026     if ( !IsMultiLine() )
1027     {
1028         wxTextEntry::WriteText(text);
1029         return;
1030     }
1031
1032     // check if we have a specific style for the current position
1033     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1034     wxTextAttr style;
1035     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1036     {
1037         enc = style.GetFontEncoding();
1038     }
1039
1040     if ( enc == wxFONTENCODING_SYSTEM )
1041         enc = GetTextEncoding();
1042
1043     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1044     if ( !buffer )
1045     {
1046         // we must log an error here as losing the text like this can be a
1047         // serious problem (e.g. imagine the document edited by user being
1048         // empty instead of containing the correct text)
1049         wxLogWarning(_("Failed to insert text in the control."));
1050         return;
1051     }
1052
1053     // First remove the selection if there is one
1054     // TODO:  Is there an easier GTK specific way to do this?
1055     long from, to;
1056     GetSelection(&from, &to);
1057     if (from != to)
1058         Remove(from, to);
1059
1060     // Insert the text
1061     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1062
1063     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1064     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1065     // won't work when frozen, text view is not using m_buffer then
1066     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1067     {
1068         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1069                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1070     }
1071 }
1072
1073 wxString wxTextCtrl::GetLineText( long lineNo ) const
1074 {
1075     wxString result;
1076     if ( IsMultiLine() )
1077     {
1078         GtkTextIter line;
1079         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1080
1081         GtkTextIter end = line;
1082         // avoid skipping to the next line end if this one is empty
1083         if ( !gtk_text_iter_ends_line(&line) )
1084             gtk_text_iter_forward_to_line_end(&end);
1085
1086         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1087         result = wxGTK_CONV_BACK(text);
1088     }
1089     else
1090     {
1091         if (lineNo == 0)
1092             result = GetValue();
1093     }
1094     return result;
1095 }
1096
1097 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1098 {
1099   /* If you implement this, don't forget to update the documentation!
1100    * (file docs/latex/wx/text.tex) */
1101     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1102 }
1103
1104 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1105 {
1106     if ( IsMultiLine() )
1107     {
1108         GtkTextIter iter;
1109
1110         if (pos > GetLastPosition())
1111             return false;
1112
1113         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1114
1115         if ( y )
1116             *y = gtk_text_iter_get_line(&iter);
1117         if ( x )
1118             *x = gtk_text_iter_get_line_offset(&iter);
1119     }
1120     else // single line control
1121     {
1122         if ( pos <= GTK_ENTRY(m_text)->text_length )
1123         {
1124             if ( y )
1125                 *y = 0;
1126             if ( x )
1127                 *x = pos;
1128         }
1129         else
1130         {
1131             // index out of bounds
1132             return false;
1133         }
1134     }
1135
1136     return true;
1137 }
1138
1139 long wxTextCtrl::XYToPosition(long x, long y ) const
1140 {
1141     if ( IsSingleLine() )
1142         return 0;
1143
1144     GtkTextIter iter;
1145     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1146         return -1;
1147
1148     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1149     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1150         return -1;
1151
1152     return gtk_text_iter_get_offset(&iter) + x;
1153 }
1154
1155 int wxTextCtrl::GetLineLength(long lineNo) const
1156 {
1157     if ( IsMultiLine() )
1158     {
1159         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1160         if (lineNo > last_line)
1161             return -1;
1162
1163         GtkTextIter iter;
1164         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1165         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1166         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1167     }
1168     else
1169     {
1170         wxString str = GetLineText (lineNo);
1171         return (int) str.length();
1172     }
1173 }
1174
1175 int wxTextCtrl::GetNumberOfLines() const
1176 {
1177     if ( IsMultiLine() )
1178     {
1179         return gtk_text_buffer_get_line_count( m_buffer );
1180     }
1181     else // single line
1182     {
1183         return 1;
1184     }
1185 }
1186
1187 void wxTextCtrl::SetInsertionPoint( long pos )
1188 {
1189     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1190
1191     if ( IsMultiLine() )
1192     {
1193         GtkTextIter iter;
1194         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1195         gtk_text_buffer_place_cursor( m_buffer, &iter );
1196         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1197         if (IsFrozen())
1198             // defer until Thaw, text view is not using m_buffer now
1199             m_showPositionOnThaw = mark;
1200         else
1201             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1202     }
1203     else // single line
1204     {
1205         wxTextEntry::SetInsertionPoint(pos);
1206     }
1207 }
1208
1209 void wxTextCtrl::SetEditable( bool editable )
1210 {
1211     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1212
1213     if ( IsMultiLine() )
1214     {
1215         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1216     }
1217     else // single line
1218     {
1219         wxTextEntry::SetEditable(editable);
1220     }
1221 }
1222
1223 bool wxTextCtrl::Enable( bool enable )
1224 {
1225     if (!wxWindowBase::Enable(enable))
1226     {
1227         // nothing to do
1228         return false;
1229     }
1230
1231     gtk_widget_set_sensitive( m_text, enable );
1232
1233     return true;
1234 }
1235
1236 // wxGTK-specific: called recursively by Enable,
1237 // to give widgets an opportunity to correct their colours after they
1238 // have been changed by Enable
1239 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1240 {
1241     // If we have a custom background colour, we use this colour in both
1242     // disabled and enabled mode, or we end up with a different colour under the
1243     // text.
1244     wxColour oldColour = GetBackgroundColour();
1245     if (oldColour.Ok())
1246     {
1247         // Need to set twice or it'll optimize the useful stuff out
1248         if (oldColour == * wxWHITE)
1249             SetBackgroundColour(*wxBLACK);
1250         else
1251             SetBackgroundColour(*wxWHITE);
1252         SetBackgroundColour(oldColour);
1253     }
1254 }
1255
1256 void wxTextCtrl::MarkDirty()
1257 {
1258     m_modified = true;
1259 }
1260
1261 void wxTextCtrl::DiscardEdits()
1262 {
1263     m_modified = false;
1264 }
1265
1266 // ----------------------------------------------------------------------------
1267 // event handling
1268 // ----------------------------------------------------------------------------
1269
1270 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1271 {
1272     if ( enable )
1273     {
1274         g_signal_handlers_unblock_by_func(GetTextObject(),
1275             (gpointer)gtk_text_changed_callback, this);
1276     }
1277     else // disable events
1278     {
1279         g_signal_handlers_block_by_func(GetTextObject(),
1280             (gpointer)gtk_text_changed_callback, this);
1281     }
1282 }
1283
1284 bool wxTextCtrl::IgnoreTextUpdate()
1285 {
1286     if ( m_countUpdatesToIgnore > 0 )
1287     {
1288         m_countUpdatesToIgnore--;
1289
1290         return true;
1291     }
1292
1293     return false;
1294 }
1295
1296 bool wxTextCtrl::MarkDirtyOnChange()
1297 {
1298     if ( m_dontMarkDirty )
1299     {
1300         m_dontMarkDirty = false;
1301
1302         return false;
1303     }
1304
1305     return true;
1306 }
1307
1308 void wxTextCtrl::SetSelection( long from, long to )
1309 {
1310     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1311
1312     if (from == -1 && to == -1)
1313     {
1314         from = 0;
1315         to = GetValue().length();
1316     }
1317
1318     if ( IsMultiLine() )
1319     {
1320         GtkTextIter fromi, toi;
1321         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1322         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1323
1324         gtk_text_buffer_place_cursor( m_buffer, &toi );
1325         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1326     }
1327     else // single line
1328     {
1329         wxTextEntry::SetSelection(from, to);
1330     }
1331 }
1332
1333 void wxTextCtrl::ShowPosition( long pos )
1334 {
1335     if (IsMultiLine())
1336     {
1337         GtkTextIter iter;
1338         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1339         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1340         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1341         if (IsFrozen())
1342             // defer until Thaw, text view is not using m_buffer now
1343             m_showPositionOnThaw = mark;
1344         else
1345             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1346     }
1347 }
1348
1349 wxTextCtrlHitTestResult
1350 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1351 {
1352     if ( !IsMultiLine() )
1353     {
1354         // not supported
1355         return wxTE_HT_UNKNOWN;
1356     }
1357
1358     int x, y;
1359     gtk_text_view_window_to_buffer_coords
1360     (
1361         GTK_TEXT_VIEW(m_text),
1362         GTK_TEXT_WINDOW_TEXT,
1363         pt.x, pt.y,
1364         &x, &y
1365     );
1366
1367     GtkTextIter iter;
1368     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1369     if ( pos )
1370         *pos = gtk_text_iter_get_offset(&iter);
1371
1372     return wxTE_HT_ON_TEXT;
1373 }
1374
1375 long wxTextCtrl::GetInsertionPoint() const
1376 {
1377     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1378
1379     if ( IsMultiLine() )
1380     {
1381         // There is no direct accessor for the cursor, but
1382         // internally, the cursor is the "mark" called
1383         // "insert" in the text view's btree structure.
1384
1385         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1386         GtkTextIter cursor;
1387         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1388
1389         return gtk_text_iter_get_offset( &cursor );
1390     }
1391     else
1392     {
1393         return wxTextEntry::GetInsertionPoint();
1394     }
1395 }
1396
1397 wxTextPos wxTextCtrl::GetLastPosition() const
1398 {
1399     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1400
1401     int pos = 0;
1402
1403     if ( IsMultiLine() )
1404     {
1405         GtkTextIter end;
1406         gtk_text_buffer_get_end_iter( m_buffer, &end );
1407
1408         pos = gtk_text_iter_get_offset( &end );
1409     }
1410     else // single line
1411     {
1412         pos = wxTextEntry::GetLastPosition();
1413     }
1414
1415     return (long)pos;
1416 }
1417
1418 void wxTextCtrl::Remove( long from, long to )
1419 {
1420     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1421
1422     if ( IsMultiLine() )
1423     {
1424         GtkTextIter fromi, toi;
1425         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1426         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1427
1428         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1429     }
1430     else // single line
1431     {
1432         wxTextEntry::Remove(from, to);
1433     }
1434 }
1435
1436 void wxTextCtrl::Cut()
1437 {
1438     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1439
1440     if ( IsMultiLine() )
1441         g_signal_emit_by_name (m_text, "cut-clipboard");
1442     else
1443         wxTextEntry::Cut();
1444 }
1445
1446 void wxTextCtrl::Copy()
1447 {
1448     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1449
1450     if ( IsMultiLine() )
1451         g_signal_emit_by_name (m_text, "copy-clipboard");
1452     else
1453         wxTextEntry::Copy();
1454 }
1455
1456 void wxTextCtrl::Paste()
1457 {
1458     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1459
1460     if ( IsMultiLine() )
1461         g_signal_emit_by_name (m_text, "paste-clipboard");
1462     else
1463         wxTextEntry::Paste();
1464 }
1465
1466 // If the return values from and to are the same, there is no
1467 // selection.
1468 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1469 {
1470     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1471
1472     if ( !IsMultiLine() )
1473     {
1474         wxTextEntry::GetSelection(fromOut, toOut);
1475         return;
1476     }
1477
1478     gint from, to;
1479
1480     GtkTextIter ifrom, ito;
1481     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1482     {
1483         from = gtk_text_iter_get_offset(&ifrom);
1484         to = gtk_text_iter_get_offset(&ito);
1485
1486         if ( from > to )
1487         {
1488             // exchange them to be compatible with wxMSW
1489             gint tmp = from;
1490             from = to;
1491             to = tmp;
1492         }
1493     }
1494     else // no selection
1495     {
1496         from =
1497         to = GetInsertionPoint();
1498     }
1499
1500     if ( fromOut )
1501         *fromOut = from;
1502     if ( toOut )
1503         *toOut = to;
1504 }
1505
1506
1507 bool wxTextCtrl::IsEditable() const
1508 {
1509     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1510
1511     if ( IsMultiLine() )
1512     {
1513         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1514     }
1515     else
1516     {
1517         return wxTextEntry::IsEditable();
1518     }
1519 }
1520
1521 bool wxTextCtrl::IsModified() const
1522 {
1523     return m_modified;
1524 }
1525
1526 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1527 {
1528     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1529
1530     if ( key_event.GetKeyCode() == WXK_RETURN )
1531     {
1532         if ( HasFlag(wxTE_PROCESS_ENTER) )
1533         {
1534             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1535             event.SetEventObject(this);
1536             event.SetString(GetValue());
1537             if ( GetEventHandler()->ProcessEvent(event) )
1538                 return;
1539         }
1540
1541         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1542         //        probably is
1543         if ( IsSingleLine() )
1544         {
1545             // This will invoke the dialog default action, such
1546             // as the clicking the default button.
1547
1548             wxWindow *top_frame = m_parent;
1549             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1550                 top_frame = top_frame->GetParent();
1551
1552             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1553             {
1554                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1555
1556                 if (window->default_widget)
1557                 {
1558                     gtk_widget_activate (window->default_widget);
1559                     return;
1560                 }
1561             }
1562         }
1563     }
1564
1565     key_event.Skip();
1566 }
1567
1568 GtkWidget* wxTextCtrl::GetConnectWidget()
1569 {
1570     return GTK_WIDGET(m_text);
1571 }
1572
1573 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1574 {
1575     if ( IsMultiLine() )
1576     {
1577         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1578                                         GTK_TEXT_WINDOW_TEXT );
1579     }
1580     else
1581     {
1582         return GTK_ENTRY(m_text)->text_area;
1583     }
1584 }
1585
1586 // the font will change for subsequent text insertiongs
1587 bool wxTextCtrl::SetFont( const wxFont &font )
1588 {
1589     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1590
1591     if ( !wxTextCtrlBase::SetFont(font) )
1592     {
1593         // font didn't change, nothing to do
1594         return false;
1595     }
1596
1597     if ( IsMultiLine() )
1598     {
1599         SetUpdateFont(true);
1600
1601         m_defaultStyle.SetFont(font);
1602
1603         ChangeFontGlobally();
1604     }
1605
1606     return true;
1607 }
1608
1609 void wxTextCtrl::ChangeFontGlobally()
1610 {
1611     // this method is very inefficient and hence should be called as rarely as
1612     // possible!
1613     //
1614     // TODO: it can be implemented much more efficiently for GTK2
1615     wxASSERT_MSG( IsMultiLine(),
1616                   _T("shouldn't be called for single line controls") );
1617
1618     wxString value = GetValue();
1619     if ( !value.empty() )
1620     {
1621         SetUpdateFont(false);
1622
1623         Clear();
1624         AppendText(value);
1625     }
1626 }
1627
1628 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1629 {
1630     if ( !wxControl::SetForegroundColour(colour) )
1631         return false;
1632
1633     // update default fg colour too
1634     m_defaultStyle.SetTextColour(colour);
1635
1636     return true;
1637 }
1638
1639 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1640 {
1641     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1642
1643     if ( !wxControl::SetBackgroundColour( colour ) )
1644         return false;
1645
1646     if (!m_backgroundColour.Ok())
1647         return false;
1648
1649     // change active background color too
1650     m_defaultStyle.SetBackgroundColour( colour );
1651
1652     return true;
1653 }
1654
1655 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1656 {
1657     if ( IsMultiLine() )
1658     {
1659         if ( style.IsDefault() )
1660         {
1661             // nothing to do
1662             return true;
1663         }
1664
1665         gint l = gtk_text_buffer_get_char_count( m_buffer );
1666
1667         wxCHECK_MSG( start >= 0 && end <= l, false,
1668                      _T("invalid range in wxTextCtrl::SetStyle") );
1669
1670         GtkTextIter starti, endi;
1671         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1672         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1673
1674         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1675
1676         return true;
1677     }
1678     //else: single line text controls don't support styles
1679
1680     return false;
1681 }
1682
1683 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1684 {
1685     gtk_widget_modify_style(m_text, style);
1686 }
1687
1688 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1689 {
1690     Cut();
1691 }
1692
1693 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1694 {
1695     Copy();
1696 }
1697
1698 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1699 {
1700     Paste();
1701 }
1702
1703 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1704 {
1705     Undo();
1706 }
1707
1708 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1709 {
1710     Redo();
1711 }
1712
1713 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1714 {
1715     event.Enable( CanCut() );
1716 }
1717
1718 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1719 {
1720     event.Enable( CanCopy() );
1721 }
1722
1723 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1724 {
1725     event.Enable( CanPaste() );
1726 }
1727
1728 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1729 {
1730     event.Enable( CanUndo() );
1731 }
1732
1733 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1734 {
1735     event.Enable( CanRedo() );
1736 }
1737
1738 wxSize wxTextCtrl::DoGetBestSize() const
1739 {
1740     // FIXME should be different for multi-line controls...
1741     wxSize ret( wxControl::DoGetBestSize() );
1742     wxSize best(80, ret.y);
1743     CacheBestSize(best);
1744     return best;
1745 }
1746
1747 // ----------------------------------------------------------------------------
1748 // freeze/thaw
1749 // ----------------------------------------------------------------------------
1750
1751 void wxTextCtrl::Freeze()
1752 {
1753     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1754
1755     if ( HasFlag(wxTE_MULTILINE) )
1756     {
1757         if (m_freezeCount++ == 0)
1758         {
1759             // freeze textview updates and remove buffer
1760             g_signal_connect (m_text, "expose_event",
1761                               G_CALLBACK (gtk_text_exposed_callback), this);
1762             g_signal_connect (m_widget, "expose_event",
1763                               G_CALLBACK (gtk_text_exposed_callback), this);
1764             gtk_widget_set_sensitive(m_widget, false);
1765             g_object_ref(m_buffer);
1766             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1767             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1768             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1769             // gtk_text_view_set_buffer adds its own reference
1770             g_object_unref(buf_new);
1771             // This mark should be deleted when the buffer is changed,
1772             // but it's not (in GTK+ up to at least 2.10.6).
1773             // Otherwise these anonymous marks start to build up in the buffer,
1774             // and Freeze takes longer and longer each time it is called.
1775             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1776                 gtk_text_buffer_delete_mark(m_buffer, mark);
1777         }
1778     }
1779 }
1780
1781 void wxTextCtrl::Thaw()
1782 {
1783     if ( HasFlag(wxTE_MULTILINE) )
1784     {
1785         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1786
1787         if (--m_freezeCount == 0)
1788         {
1789             // Reattach buffer and thaw textview updates
1790             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1791             g_object_unref(m_buffer);
1792             gtk_widget_set_sensitive(m_widget, true);
1793             g_signal_handlers_disconnect_by_func (m_widget,
1794                     (gpointer) gtk_text_exposed_callback, this);
1795             g_signal_handlers_disconnect_by_func (m_text,
1796                     (gpointer) gtk_text_exposed_callback, this);
1797             if (m_showPositionOnThaw != NULL)
1798             {
1799                 gtk_text_view_scroll_mark_onscreen(
1800                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1801                 m_showPositionOnThaw = NULL;
1802             }
1803         }
1804     }
1805 }
1806
1807 // ----------------------------------------------------------------------------
1808 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1809 // ----------------------------------------------------------------------------
1810
1811 // FIXME: when dragging on a link the sample gets an "Unknown event".
1812 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1813 // a buggy sample, or something else
1814 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1815 {
1816     event.Skip();
1817     if( !HasFlag(wxTE_AUTO_URL) )
1818         return;
1819
1820     gint x, y;
1821     GtkTextIter start, end;
1822     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1823                                                 "wxUrl");
1824
1825     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1826                                           event.GetX(), event.GetY(), &x, &y);
1827
1828     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1829     if (!gtk_text_iter_has_tag(&end, tag))
1830     {
1831         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1832                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1833         return;
1834     }
1835
1836     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1837                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1838
1839     start = end;
1840     if(!gtk_text_iter_begins_tag(&start, tag))
1841         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1842     if(!gtk_text_iter_ends_tag(&end, tag))
1843         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1844
1845     // Native context menu is probably not desired on an URL.
1846     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1847     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1848         event.Skip(false);
1849
1850     wxTextUrlEvent url_event(m_windowId, event,
1851                              gtk_text_iter_get_offset(&start),
1852                              gtk_text_iter_get_offset(&end));
1853
1854     InitCommandEvent(url_event);
1855     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1856     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1857     GetEventHandler()->ProcessEvent(url_event);
1858 }
1859
1860 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1861 {
1862     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1863
1864     // GtkTextView starts a drag operation when left mouse button is pressed
1865     // and ends it when it is released and if it doesn't get the release event
1866     // the next click on a control results in an assertion failure inside
1867     // gtk_text_view_start_selection_drag() which simply *kills* the program
1868     // without anything we can do about it, so always let GTK+ have this event
1869     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1870 }
1871
1872 // static
1873 wxVisualAttributes
1874 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1875 {
1876     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1877 }
1878
1879 #endif // wxUSE_TEXTCTRL