src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29 #include "wx/math.h"
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // data
  43 //-----------------------------------------------------------------------------
  44
  45 extern bool       g_blockEventsOnDrag;
  46 extern wxCursor   g_globalCursor;
  47 extern wxWindowGTK *g_delayedFocus;
  48
  49 // ----------------------------------------------------------------------------
  50 // helpers
  51 // ----------------------------------------------------------------------------
  52
  53 #ifdef __WXGTK20__
  54 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  55                                        const wxTextAttr& attr,
  56                                        GtkTextIter *start,
  57                                        GtkTextIter *end)
  58 {
  59     static gchar buf[1024];
  60     GtkTextTag *tag;
  61
  62     if (attr.HasFont())
  63     {
  64         char *font_string;
  65         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  66         font_string = pango_font_description_to_string(font_description);
  67         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  68         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  69                                          buf );
  70         if (!tag)
  71             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  72                                               "font-desc", font_description,
  73                                               NULL );
  74         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  75         g_free (font_string);
  76     }
  77
  78     if (attr.HasTextColour())
  79     {
  80         GdkColor *colFg = attr.GetTextColour().GetColor();
  81         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  82                    colFg->red, colFg->green, colFg->blue);
  83         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  84                                          buf );
  85         if (!tag)
  86             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  87                                               "foreground-gdk", colFg, NULL );
  88         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  89     }
  90
  91     if (attr.HasBackgroundColour())
  92     {
  93         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
  94         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
  95                    colBg->red, colBg->green, colBg->blue);
  96         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  97                                          buf );
  98         if (!tag)
  99             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 100                                               "background-gdk", colBg, NULL );
 101         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102     }
 103 }
 104
 105 static void wxGtkTextInsert(GtkWidget *text,
 106                             GtkTextBuffer *text_buffer,
 107                             const wxTextAttr& attr,
 108                             wxCharBuffer buffer)
 109
 110 {
 111     gint start_offset;
 112     GtkTextIter iter, start;
 113
 114     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 115                                      gtk_text_buffer_get_insert (text_buffer) );
 116     start_offset = gtk_text_iter_get_offset (&iter);
 117     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 118
 119     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 120
 121     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 122 }
 123 #else
 124 static void wxGtkTextInsert(GtkWidget *text,
 125                             const wxTextAttr& attr,
 126                             const char *txt,
 127                             size_t len)
 128 {
 129     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
 130                                    : NULL;
 131
 132     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
 133                                            : NULL;
 134
 135     GdkColor *colBg = attr.HasBackgroundColour()
 136                         ? attr.GetBackgroundColour().GetColor()
 137                         : NULL;
 138
 139     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
 140 }
 141 #endif // GTK 1.x
 142
 143 // ----------------------------------------------------------------------------
 144 // "insert_text" for GtkEntry
 145 // ----------------------------------------------------------------------------
 146
 147 static void
 148 gtk_insert_text_callback(GtkEditable *editable,
 149                          const gchar *new_text,
 150                          gint new_text_length,
 151                          gint *position,
 152                          wxTextCtrl *win)
 153 {
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     // we should only be called if we have a max len limit at all
 158     GtkEntry *entry = GTK_ENTRY (editable);
 159
 160     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 161
 162     // check that we don't overflow the max length limit
 163     //
 164     // FIXME: this doesn't work when we paste a string which is going to be
 165     //        truncated
 166     if ( entry->text_length == entry->text_max_length )
 167     {
 168         // we don't need to run the base class version at all
 169         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 170
 171         // remember that the next changed signal is to be ignored to avoid
 172         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 173         win->IgnoreNextTextUpdate();
 174
 175         // and generate the correct one ourselves
 176         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 177         event.SetEventObject(win);
 178         event.SetString(win->GetValue());
 179         win->GetEventHandler()->ProcessEvent( event );
 180     }
 181 }
 182
 183 #ifdef __WXGTK20__
 184 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 185
 186 static void
 187 au_apply_tag_callback(GtkTextBuffer *buffer,
 188                       GtkTextTag *tag,
 189                       GtkTextIter *start,
 190                       GtkTextIter *end,
 191                       gpointer textctrl)
 192 {
 193     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 194         g_signal_stop_emission_by_name(buffer, "apply_tag");
 195 }
 196
 197 //-----------------------------------------------------------------------------
 198 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 199 //-----------------------------------------------------------------------------
 200
 201 static gboolean
 202 pred_whitespace (gunichar ch, gpointer user_data)
 203 {
 204     return g_unichar_isspace(ch);
 205 }
 206
 207 static gboolean
 208 pred_non_whitespace (gunichar ch, gpointer user_data)
 209 {
 210     return !g_unichar_isspace(ch);
 211 }
 212
 213 static gboolean
 214 pred_nonpunct (gunichar ch, gpointer user_data)
 215 {
 216     return !g_unichar_ispunct(ch);
 217 }
 218
 219 static gboolean
 220 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 221 {
 222     return !g_unichar_ispunct(ch) || ch == '/';
 223 }
 224
 225 //-----------------------------------------------------------------------------
 226 //  Check for links between s and e and correct tags as necessary
 227 //-----------------------------------------------------------------------------
 228
 229 // This function should be made match better while being efficient at one point.
 230 // Most probably with a row of regular expressions.
 231 static void
 232 au_check_word( GtkTextIter *s, GtkTextIter *e )
 233 {
 234     static const char *URIPrefixes[] =
 235     {
 236         "http://",
 237         "ftp://",
 238         "www.",
 239         "ftp.",
 240         "mailto://",
 241         "https://",
 242         "file://",
 243         "nntp://",
 244         "news://",
 245         "telnet://",
 246         "mms://",
 247         "gopher://",
 248         "prospero://",
 249         "wais://",
 250     };
 251
 252     GtkTextIter start = *s, end = *e;
 253     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 254
 255     // Get our special link tag
 256     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 257
 258     // Get rid of punctuation from beginning and end.
 259     // Might want to move this to au_check_range if an improved link checking doesn't
 260     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 261     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 262         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 263
 264     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 265     gtk_text_iter_forward_char(&end);
 266
 267     gchar* text = gtk_text_iter_get_text( &start, &end );
 268     size_t len = strlen(text), prefix_len;
 269     size_t n;
 270
 271     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 272     {
 273         prefix_len = strlen(URIPrefixes[n]);
 274         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 275             break;
 276     }
 277
 278     if(n < WXSIZEOF(URIPrefixes))
 279     {
 280         gulong signal_id = g_signal_handler_find(buffer,
 281                                                  (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 282                                                  0, 0, NULL,
 283                                                  (gpointer)au_apply_tag_callback, NULL);
 284
 285         g_signal_handler_block(buffer, signal_id);
 286         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 287         g_signal_handler_unblock(buffer, signal_id);
 288     }
 289 }
 290
 291 static void
 292 au_check_range(GtkTextIter *s,
 293                GtkTextIter *range_end)
 294 {
 295     GtkTextIter range_start = *s;
 296     GtkTextIter word_end;
 297     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 298     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 299
 300     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 301
 302     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 303         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 304
 305     while(!gtk_text_iter_equal(&range_start, range_end))
 306     {
 307         word_end = range_start;
 308         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 309
 310         // Now we should have a word delimited by range_start and word_end, correct link tags
 311         au_check_word(&range_start, &word_end);
 312
 313         range_start = word_end;
 314         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 315     }
 316 }
 317
 318 //-----------------------------------------------------------------------------
 319 //  "insert-text" for GtkTextBuffer
 320 //-----------------------------------------------------------------------------
 321
 322 static void
 323 au_insert_text_callback(GtkTextBuffer *buffer,
 324                         GtkTextIter *end,
 325                         gchar *text,
 326                         gint len,
 327                         wxTextCtrl *win)
 328 {
 329     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 330         return;
 331
 332     GtkTextIter start = *end;
 333     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 334
 335     GtkTextIter line_start = start;
 336     GtkTextIter line_end = *end;
 337     GtkTextIter words_start = start;
 338     GtkTextIter words_end = *end;
 339
 340     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 341     gtk_text_iter_forward_to_line_end(&line_end);
 342     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 343     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 344
 345     au_check_range(&words_start, &words_end);
 346 }
 347
 348 //-----------------------------------------------------------------------------
 349 //  "delete-range" for GtkTextBuffer
 350 //-----------------------------------------------------------------------------
 351
 352 static void
 353 au_delete_range_callback(GtkTextBuffer *buffer,
 354                          GtkTextIter *start,
 355                          GtkTextIter *end,
 356                          wxTextCtrl *win)
 357 {
 358     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 359         return;
 360
 361     GtkTextIter line_start = *start, line_end = *end;
 362
 363     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 364     gtk_text_iter_forward_to_line_end(&line_end);
 365     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 366     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 367
 368     au_check_range(start, end);
 369 }
 370
 371
 372 #endif
 373
 374 //-----------------------------------------------------------------------------
 375 //  "changed"
 376 //-----------------------------------------------------------------------------
 377
 378 static void
 379 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 380 {
 381     if ( win->IgnoreTextUpdate() )
 382         return;
 383
 384     if (!win->m_hasVMT) return;
 385
 386     if (g_isIdle)
 387         wxapp_install_idle_handler();
 388
 389     win->SetModified();
 390 #ifndef __WXGTK20__
 391     win->UpdateFontIfNeeded();
 392 #endif // !__WXGTK20__
 393
 394     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 395     event.SetEventObject( win );
 396     win->GetEventHandler()->ProcessEvent( event );
 397 }
 398
 399 //-----------------------------------------------------------------------------
 400 // "expose_event" from scrolled window and textview
 401 //-----------------------------------------------------------------------------
 402
 403 #ifdef __WXGTK20__
 404 static gboolean
 405 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 406 {
 407     return TRUE;
 408 }
 409 #endif
 410
 411 //-----------------------------------------------------------------------------
 412 // "changed" from vertical scrollbar
 413 //-----------------------------------------------------------------------------
 414
 415 #ifndef __WXGTK20__
 416 static void
 417 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 418 {
 419     if (!win->m_hasVMT) return;
 420
 421     if (g_isIdle)
 422         wxapp_install_idle_handler();
 423
 424     win->CalculateScrollbar();
 425 }
 426 #endif
 427
 428 // ----------------------------------------------------------------------------
 429 // redraw callback for multiline text
 430 // ----------------------------------------------------------------------------
 431
 432 #ifndef __WXGTK20__
 433
 434 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 435 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 436 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 437 // don't do anything if we're inside wxYield()
 438
 439 extern bool wxIsInsideYield;
 440
 441 extern "C" {
 442     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 443 }
 444
 445 static GtkDrawCallback gs_gtk_text_draw = NULL;
 446
 447 extern "C"
 448 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 449 {
 450     if ( !wxIsInsideYield )
 451     {
 452         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 453                      _T("infinite recursion in wxgtk_text_draw aborted") );
 454
 455         gs_gtk_text_draw(widget, rect);
 456     }
 457 }
 458
 459 #endif // __WXGTK20__
 460
 461 //-----------------------------------------------------------------------------
 462 //  wxTextCtrl
 463 //-----------------------------------------------------------------------------
 464
 465 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 466
 467 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 468     EVT_CHAR(wxTextCtrl::OnChar)
 469
 470     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 471     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 472     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 473     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 474     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 475
 476     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 477     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 478     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 479     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 480     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 481
 482 #ifdef __WXGTK20__
 483     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 484     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 485     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 486     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 487     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 488     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 489     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 490     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 491     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 492 #endif
 493 END_EVENT_TABLE()
 494
 495 void wxTextCtrl::Init()
 496 {
 497     m_ignoreNextUpdate =
 498     m_modified = false;
 499     SetUpdateFont(false);
 500     m_text =
 501     m_vScrollbar = (GtkWidget *)NULL;
 502 #ifdef __WXGTK20__
 503     m_frozenness = 0;
 504     m_gdkHandCursor = NULL;
 505     m_gdkXTermCursor = NULL;
 506 #endif
 507 }
 508
 509 wxTextCtrl::~wxTextCtrl()
 510 {
 511 #ifdef __WXGTK20__
 512     if(m_gdkHandCursor)
 513         gdk_cursor_unref(m_gdkHandCursor);
 514     if(m_gdkXTermCursor)
 515         gdk_cursor_unref(m_gdkXTermCursor);
 516 #endif
 517 }
 518
 519 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 520                         wxWindowID id,
 521                         const wxString &value,
 522                         const wxPoint &pos,
 523                         const wxSize &size,
 524                         long style,
 525                         const wxValidator& validator,
 526                         const wxString &name )
 527 {
 528     Init();
 529
 530     Create( parent, id, value, pos, size, style, validator, name );
 531 }
 532
 533 bool wxTextCtrl::Create( wxWindow *parent,
 534                          wxWindowID id,
 535                          const wxString &value,
 536                          const wxPoint &pos,
 537                          const wxSize &size,
 538                          long style,
 539                          const wxValidator& validator,
 540                          const wxString &name )
 541 {
 542     m_needParent = true;
 543     m_acceptsFocus = true;
 544
 545     if (!PreCreation( parent, pos, size ) ||
 546         !CreateBase( parent, id, pos, size, style, validator, name ))
 547     {
 548         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 549         return false;
 550     }
 551
 552
 553     m_vScrollbarVisible = false;
 554
 555     bool multi_line = (style & wxTE_MULTILINE) != 0;
 556
 557     if (multi_line)
 558     {
 559 #ifdef __WXGTK20__
 560         // Create view
 561         m_text = gtk_text_view_new();
 562
 563         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 564
 565         // create scrolled window
 566         m_widget = gtk_scrolled_window_new( NULL, NULL );
 567         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 568                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 569
 570         // Insert view into scrolled window
 571         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 572
 573         // Global settings which can be overridden by tags, I guess.
 574         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 575             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 576         else
 577             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 578
 579         if (!HasFlag(wxNO_BORDER))
 580             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 581
 582         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 583
 584         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 585 #else
 586         // create our control ...
 587         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 588
 589         // ... and put into the upper left hand corner of the table
 590         bool bHasHScrollbar = false;
 591         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 592         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 593         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 594                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 595                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 596                        0, 0);
 597
 598         // always wrap words
 599         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 600
 601         // finally, put the vertical scrollbar in the upper right corner
 602         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 603         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 604         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 605                      GTK_FILL,
 606                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 607                      0, 0);
 608 #endif
 609     }
 610     else
 611     {
 612         // a single-line text control: no need for scrollbars
 613         m_widget =
 614         m_text = gtk_entry_new();
 615
 616 #ifdef __WXGTK20__
 617         if (style & wxNO_BORDER)
 618             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 619 #endif
 620     }
 621
 622     m_parent->DoAddChild( this );
 623
 624     m_focusWidget = m_text;
 625
 626     PostCreation(size);
 627
 628     if (multi_line)
 629         gtk_widget_show(m_text);
 630
 631 #ifndef __WXGTK20__
 632     if (multi_line)
 633     {
 634         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 635           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 636
 637         // only initialize gs_gtk_text_draw once, starting from the next the
 638         // klass::draw will already be wxgtk_text_draw
 639         if ( !gs_gtk_text_draw )
 640         {
 641             GtkDrawCallback&
 642                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 643
 644             gs_gtk_text_draw = draw;
 645
 646             draw = wxgtk_text_draw;
 647         }
 648     }
 649 #endif // GTK+ 1.x
 650
 651     if (!value.empty())
 652     {
 653 #ifdef __WXGTK20__
 654         SetValue( value );
 655 #else
 656
 657 #if !GTK_CHECK_VERSION(1, 2, 0)
 658         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 659         // gtk_editable_insert_text()
 660         gtk_widget_realize(m_text);
 661 #endif // GTK 1.0
 662
 663         gint tmp = 0;
 664 #if wxUSE_UNICODE
 665         wxWX2MBbuf val = value.mbc_str();
 666         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 667 #else
 668         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 669 #endif
 670
 671         if (multi_line)
 672         {
 673             // Bring editable's cursor uptodate. Bug in GTK.
 674             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 675         }
 676
 677 #endif
 678     }
 679
 680     if (style & wxTE_PASSWORD)
 681     {
 682         if (!multi_line)
 683             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 684     }
 685
 686     if (style & wxTE_READONLY)
 687     {
 688         if (!multi_line)
 689             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 690 #ifdef __WXGTK20__
 691         else
 692             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 693 #else
 694     }
 695     else
 696     {
 697         if (multi_line)
 698             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 699 #endif
 700     }
 701
 702 #ifdef __WXGTK20__
 703     if (multi_line)
 704     {
 705         if (style & wxTE_RIGHT)
 706             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 707         else if (style & wxTE_CENTRE)
 708             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 709         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 710     }
 711     else
 712     {
 713 #ifdef __WXGTK24__
 714         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 715         if (!gtk_check_version(2,4,0))
 716         {
 717             if (style & wxTE_RIGHT)
 718                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 719             else if (style & wxTE_CENTRE)
 720                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 721         }
 722 #endif
 723     }
 724 #endif // __WXGTK20__
 725
 726     // We want to be notified about text changes.
 727 #ifdef __WXGTK20__
 728     if (multi_line)
 729     {
 730         g_signal_connect( G_OBJECT(m_buffer), "changed",
 731             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 732
 733         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 734         if (style & wxTE_AUTO_URL)
 735         {
 736             GtkTextIter start, end;
 737             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 738             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 739
 740             // We create our wxUrl tag here for slight efficiency gain - we
 741             // don't have to check for the tag existance in callbacks,
 742             // hereby it's guaranteed to exist.
 743             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 744                                        "foreground", "blue",
 745                                        "underline", PANGO_UNDERLINE_SINGLE,
 746                                        NULL);
 747
 748             // Check for URLs after each text change
 749             g_signal_connect_after( G_OBJECT(m_buffer), "insert_text",
 750                 GTK_SIGNAL_FUNC(au_insert_text_callback), (gpointer)this);
 751             g_signal_connect_after( G_OBJECT(m_buffer), "delete_range",
 752                 GTK_SIGNAL_FUNC(au_delete_range_callback), (gpointer)this);
 753
 754             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 755             // block this callback temporarily. This takes care of gtk+ internal
 756             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 757             // which is undesired because only a part of the URL might be copied.
 758             // The insert-text signal emitted inside it will take care of newly formed
 759             // or wholly copied URLs.
 760             g_signal_connect( G_OBJECT(m_buffer), "apply_tag",
 761                 GTK_SIGNAL_FUNC(au_apply_tag_callback), NULL);
 762
 763             // Check for URLs in the initial string passed to Create
 764             gtk_text_buffer_get_start_iter(m_buffer, &start);
 765             gtk_text_buffer_get_end_iter(m_buffer, &end);
 766             au_check_range(&start, &end);
 767         }
 768     }
 769     else
 770 #endif
 771
 772     {
 773         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 774             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 775     }
 776
 777     m_cursor = wxCursor( wxCURSOR_IBEAM );
 778
 779     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 780     SetDefaultStyle( attrDef );
 781
 782     return true;
 783 }
 784
 785
 786 void wxTextCtrl::CalculateScrollbar()
 787 {
 788 #ifndef __WXGTK20__
 789     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 790
 791     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 792
 793     if (adj->upper - adj->page_size < 0.8)
 794     {
 795         if (m_vScrollbarVisible)
 796         {
 797             gtk_widget_hide( m_vScrollbar );
 798             m_vScrollbarVisible = false;
 799         }
 800     }
 801     else
 802     {
 803         if (!m_vScrollbarVisible)
 804         {
 805             gtk_widget_show( m_vScrollbar );
 806             m_vScrollbarVisible = true;
 807         }
 808     }
 809 #endif
 810 }
 811
 812 wxString wxTextCtrl::GetValue() const
 813 {
 814     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 815
 816     wxString tmp;
 817     if (m_windowStyle & wxTE_MULTILINE)
 818     {
 819 #ifdef __WXGTK20__
 820         GtkTextIter start;
 821         gtk_text_buffer_get_start_iter( m_buffer, &start );
 822         GtkTextIter end;
 823         gtk_text_buffer_get_end_iter( m_buffer, &end );
 824         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 825
 826 #if wxUSE_UNICODE
 827         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 828 #else
 829         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 830 #endif
 831         if ( buffer )
 832             tmp = buffer;
 833
 834         g_free( text );
 835 #else
 836         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 837         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 838         tmp = text;
 839         g_free( text );
 840 #endif
 841     }
 842     else
 843     {
 844         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 845     }
 846
 847     return tmp;
 848 }
 849
 850 void wxTextCtrl::SetValue( const wxString &value )
 851 {
 852     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 853
 854     if (m_windowStyle & wxTE_MULTILINE)
 855     {
 856 #ifdef __WXGTK20__
 857
 858 #if wxUSE_UNICODE
 859         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 860 #else
 861         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 862 #endif
 863         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 864             IgnoreNextTextUpdate();
 865
 866         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 867
 868 #else
 869         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 870         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 871         len = 0;
 872         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 873 #endif
 874     }
 875     else
 876     {
 877         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 878     }
 879
 880     // GRG, Jun/2000: Changed this after a lot of discussion in
 881     //   the lists. wxWidgets 2.2 will have a set of flags to
 882     //   customize this behaviour.
 883     SetInsertionPoint(0);
 884
 885     m_modified = false;
 886 }
 887
 888 void wxTextCtrl::WriteText( const wxString &text )
 889 {
 890     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 891
 892     if ( text.empty() )
 893         return;
 894
 895     // gtk_text_changed_callback() will set m_modified to true but m_modified
 896     // shouldn't be changed by the program writing to the text control itself,
 897     // so save the old value and restore when we're done
 898     bool oldModified = m_modified;
 899
 900     if ( m_windowStyle & wxTE_MULTILINE )
 901     {
 902 #ifdef __WXGTK20__
 903
 904 #if wxUSE_UNICODE
 905         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 906 #else
 907         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 908 #endif
 909         if ( !buffer )
 910         {
 911             // what else can we do? at least don't crash...
 912             return;
 913         }
 914
 915         // TODO: Call whatever is needed to delete the selection.
 916         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 917
 918         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 919         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 920         if ( adj->value == adj->upper - adj->page_size )
 921         {
 922             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 923                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 924         }
 925 #else // GTK 1.x
 926         // After cursor movements, gtk_text_get_point() is wrong by one.
 927         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 928
 929         // always use m_defaultStyle, even if it is empty as otherwise
 930         // resetting the style and appending some more text wouldn't work: if
 931         // we don't specify the style explicitly, the old style would be used
 932         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 933         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 934
 935         // we called wxGtkTextInsert with correct font, no need to do anything
 936         // in UpdateFontIfNeeded() any longer
 937         if ( !text.empty() )
 938         {
 939             SetUpdateFont(false);
 940         }
 941
 942         // Bring editable's cursor back uptodate.
 943         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 944 #endif // GTK 1.x/2.0
 945     }
 946     else // single line
 947     {
 948         // First remove the selection if there is one
 949         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 950
 951         // This moves the cursor pos to behind the inserted text.
 952         gint len = GET_EDITABLE_POS(m_text);
 953
 954 #ifdef __WXGTK20__
 955
 956 #if wxUSE_UNICODE
 957         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 958 #else
 959         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 960 #endif
 961         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 962
 963 #else
 964         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 965 #endif
 966
 967         // Bring entry's cursor uptodate.
 968         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 969     }
 970
 971     m_modified = oldModified;
 972 }
 973
 974 void wxTextCtrl::AppendText( const wxString &text )
 975 {
 976     SetInsertionPointEnd();
 977     WriteText( text );
 978 }
 979
 980 wxString wxTextCtrl::GetLineText( long lineNo ) const
 981 {
 982     if (m_windowStyle & wxTE_MULTILINE)
 983     {
 984 #ifndef __WXGTK20__
 985         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 986         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 987
 988         if (text)
 989         {
 990             wxString buf(wxT(""));
 991             long i;
 992             int currentLine = 0;
 993             for (i = 0; currentLine != lineNo && text[i]; i++ )
 994                 if (text[i] == '\n')
 995             currentLine++;
 996             // Now get the text
 997             int j;
 998             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 999                 buf += text[i];
1000
1001             g_free( text );
1002             return buf;
1003         }
1004         else
1005         {
1006             return wxEmptyString;
1007         }
1008 #else
1009         GtkTextIter line;
1010         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1011         GtkTextIter end;
1012         gtk_text_buffer_get_end_iter(m_buffer,&end );
1013         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
1014         wxString result(wxGTK_CONV_BACK(text));
1015         g_free(text);
1016         return result.BeforeFirst(wxT('\n'));
1017 #endif
1018     }
1019     else
1020     {
1021         if (lineNo == 0) return GetValue();
1022         return wxEmptyString;
1023     }
1024 }
1025
1026 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1027 {
1028   /* If you implement this, don't forget to update the documentation!
1029    * (file docs/latex/wx/text.tex) */
1030     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1031 }
1032
1033 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1034 {
1035     if ( m_windowStyle & wxTE_MULTILINE )
1036     {
1037         wxString text = GetValue();
1038
1039         // cast to prevent warning. But pos really should've been unsigned.
1040         if( (unsigned long)pos > text.Len()  )
1041             return false;
1042
1043         *x=0;   // First Col
1044         *y=0;   // First Line
1045
1046         const wxChar* stop = text.c_str() + pos;
1047         for ( const wxChar *p = text.c_str(); p < stop; p++ )
1048         {
1049             if (*p == wxT('\n'))
1050             {
1051                 (*y)++;
1052                 *x=0;
1053             }
1054             else
1055                 (*x)++;
1056         }
1057     }
1058     else // single line control
1059     {
1060         if ( pos <= GTK_ENTRY(m_text)->text_length )
1061         {
1062             *y = 0;
1063             *x = pos;
1064         }
1065         else
1066         {
1067             // index out of bounds
1068             return false;
1069         }
1070     }
1071
1072     return true;
1073 }
1074
1075 long wxTextCtrl::XYToPosition(long x, long y ) const
1076 {
1077     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
1078
1079     long pos=0;
1080     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
1081
1082     pos += x;
1083     return pos;
1084 }
1085
1086 int wxTextCtrl::GetLineLength(long lineNo) const
1087 {
1088     wxString str = GetLineText (lineNo);
1089     return (int) str.Length();
1090 }
1091
1092 int wxTextCtrl::GetNumberOfLines() const
1093 {
1094     if (m_windowStyle & wxTE_MULTILINE)
1095     {
1096 #ifdef __WXGTK20__
1097         return gtk_text_buffer_get_line_count( m_buffer );
1098 #else
1099         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
1100         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
1101
1102         if (text)
1103         {
1104             int currentLine = 0;
1105             for (int i = 0; i < len; i++ )
1106             {
1107                 if (text[i] == '\n')
1108                     currentLine++;
1109             }
1110             g_free( text );
1111
1112             // currentLine is 0 based, add 1 to get number of lines
1113             return currentLine + 1;
1114         }
1115         else
1116         {
1117             return 0;
1118         }
1119 #endif
1120     }
1121     else
1122     {
1123         return 1;
1124     }
1125 }
1126
1127 void wxTextCtrl::SetInsertionPoint( long pos )
1128 {
1129     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1130
1131     if ( IsMultiLine() )
1132     {
1133 #ifdef __WXGTK20__
1134         GtkTextIter iter;
1135         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1136         gtk_text_buffer_place_cursor( m_buffer, &iter );
1137         gtk_text_view_scroll_mark_onscreen
1138         (
1139             GTK_TEXT_VIEW(m_text),
1140             gtk_text_buffer_get_insert( m_buffer )
1141         );
1142 #else // GTK+ 1.x
1143         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
1144           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
1145
1146         /* we fake a set_point by inserting and deleting. as the user
1147            isn't supposed to get to know about this non-sense, we
1148            disconnect so that no events are sent to the user program. */
1149
1150         gint tmp = (gint)pos;
1151         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
1152         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
1153
1154         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
1155           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
1156
1157         // bring editable's cursor uptodate. Bug in GTK.
1158         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
1159 #endif // GTK+ 2/1
1160     }
1161     else
1162     {
1163         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
1164
1165         // Bring editable's cursor uptodate. Bug in GTK.
1166         SET_EDITABLE_POS(m_text, (guint32)pos);
1167     }
1168 }
1169
1170 void wxTextCtrl::SetInsertionPointEnd()
1171 {
1172     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1173
1174     if (m_windowStyle & wxTE_MULTILINE)
1175     {
1176 #ifdef __WXGTK20__
1177         GtkTextIter end;
1178         gtk_text_buffer_get_end_iter( m_buffer, &end );
1179         gtk_text_buffer_place_cursor( m_buffer, &end );
1180 #else
1181         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
1182 #endif
1183     }
1184     else
1185     {
1186         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
1187     }
1188 }
1189
1190 void wxTextCtrl::SetEditable( bool editable )
1191 {
1192     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1193
1194     if (m_windowStyle & wxTE_MULTILINE)
1195     {
1196 #ifdef __WXGTK20__
1197         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1198 #else
1199         gtk_text_set_editable( GTK_TEXT(m_text), editable );
1200 #endif
1201     }
1202     else
1203     {
1204         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
1205     }
1206 }
1207
1208 bool wxTextCtrl::Enable( bool enable )
1209 {
1210     if (!wxWindowBase::Enable(enable))
1211     {
1212         // nothing to do
1213         return false;
1214     }
1215
1216     if (m_windowStyle & wxTE_MULTILINE)
1217     {
1218 #ifdef __WXGTK20__
1219         SetEditable( enable );
1220 #else
1221         gtk_text_set_editable( GTK_TEXT(m_text), enable );
1222         OnParentEnable(enable);
1223 #endif
1224     }
1225     else
1226     {
1227         gtk_widget_set_sensitive( m_text, enable );
1228     }
1229
1230     return true;
1231 }
1232
1233 // wxGTK-specific: called recursively by Enable,
1234 // to give widgets an oppprtunity to correct their colours after they
1235 // have been changed by Enable
1236 void wxTextCtrl::OnParentEnable( bool enable )
1237 {
1238     // If we have a custom background colour, we use this colour in both
1239     // disabled and enabled mode, or we end up with a different colour under the
1240     // text.
1241     wxColour oldColour = GetBackgroundColour();
1242     if (oldColour.Ok())
1243     {
1244         // Need to set twice or it'll optimize the useful stuff out
1245         if (oldColour == * wxWHITE)
1246             SetBackgroundColour(*wxBLACK);
1247         else
1248             SetBackgroundColour(*wxWHITE);
1249         SetBackgroundColour(oldColour);
1250     }
1251 }
1252
1253 void wxTextCtrl::MarkDirty()
1254 {
1255     m_modified = true;
1256 }
1257
1258 void wxTextCtrl::DiscardEdits()
1259 {
1260     m_modified = false;
1261 }
1262
1263 // ----------------------------------------------------------------------------
1264 // max text length support
1265 // ----------------------------------------------------------------------------
1266
1267 void wxTextCtrl::IgnoreNextTextUpdate()
1268 {
1269     m_ignoreNextUpdate = true;
1270 }
1271
1272 bool wxTextCtrl::IgnoreTextUpdate()
1273 {
1274     if ( m_ignoreNextUpdate )
1275     {
1276         m_ignoreNextUpdate = false;
1277
1278         return true;
1279     }
1280
1281     return false;
1282 }
1283
1284 void wxTextCtrl::SetMaxLength(unsigned long len)
1285 {
1286     if ( !HasFlag(wxTE_MULTILINE) )
1287     {
1288         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1289
1290         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1291         // we had tried to enter more text than allowed by max text length and
1292         // the text wasn't really changed
1293         //
1294         // to detect this and generate TEXT_MAXLEN event instead of
1295         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1296         //
1297         // when max len is set to 0 we disconnect our handler as it means that
1298         // we shouldn't check anything any more
1299         if ( len )
1300         {
1301             gtk_signal_connect( GTK_OBJECT(m_text),
1302                                 "insert_text",
1303                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1304                                 (gpointer)this);
1305         }
1306         else // no checking
1307         {
1308             gtk_signal_disconnect_by_func
1309             (
1310                 GTK_OBJECT(m_text),
1311                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1312                 (gpointer)this
1313             );
1314         }
1315     }
1316 }
1317
1318 void wxTextCtrl::SetSelection( long from, long to )
1319 {
1320     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1321
1322     if (from == -1 && to == -1)
1323     {
1324         from = 0;
1325         to = GetValue().Length();
1326     }
1327
1328 #ifndef __WXGTK20__
1329     if ( (m_windowStyle & wxTE_MULTILINE) &&
1330          !GTK_TEXT(m_text)->line_start_cache )
1331     {
1332         // tell the programmer that it didn't work
1333         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1334         return;
1335     }
1336 #endif
1337
1338     if (m_windowStyle & wxTE_MULTILINE)
1339     {
1340 #ifdef __WXGTK20__
1341         GtkTextIter fromi, toi;
1342         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1343         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1344
1345         gtk_text_buffer_place_cursor( m_buffer, &toi );
1346         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1347 #else
1348         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1349 #endif
1350     }
1351     else
1352     {
1353         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1354     }
1355 }
1356
1357 void wxTextCtrl::ShowPosition( long pos )
1358 {
1359     if (m_windowStyle & wxTE_MULTILINE)
1360     {
1361 #ifdef __WXGTK20__
1362         GtkTextIter iter;
1363         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1364         gtk_text_iter_set_offset( &iter, pos );
1365         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1366         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1367 #else // GTK 1.x
1368         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1369         float totalLines =  (float) GetNumberOfLines();
1370         long posX;
1371         long posY;
1372         PositionToXY(pos, &posX, &posY);
1373         float posLine = (float) posY;
1374         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1375         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1376 #endif // GTK 1.x/2.x
1377     }
1378 }
1379
1380 #ifdef __WXGTK20__
1381
1382 wxTextCtrlHitTestResult
1383 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1384 {
1385     if ( !IsMultiLine() )
1386     {
1387         // not supported
1388         return wxTE_HT_UNKNOWN;
1389     }
1390
1391     int x, y;
1392     gtk_text_view_window_to_buffer_coords
1393     (
1394         GTK_TEXT_VIEW(m_text),
1395         GTK_TEXT_WINDOW_TEXT,
1396         pt.x, pt.y,
1397         &x, &y
1398     );
1399
1400     GtkTextIter iter;
1401     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1402     if ( pos )
1403         *pos = gtk_text_iter_get_offset(&iter);
1404
1405     return wxTE_HT_ON_TEXT;
1406 }
1407
1408 #endif // __WXGTK20__
1409
1410 long wxTextCtrl::GetInsertionPoint() const
1411 {
1412     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1413
1414 #ifdef __WXGTK20__
1415     if (m_windowStyle & wxTE_MULTILINE)
1416     {
1417         // There is no direct accessor for the cursor, but
1418         // internally, the cursor is the "mark" called
1419         // "insert" in the text view's btree structure.
1420
1421         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1422         GtkTextIter cursor;
1423         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1424
1425         return gtk_text_iter_get_offset( &cursor );
1426     }
1427     else
1428 #endif
1429     {
1430     return (long) GET_EDITABLE_POS(m_text);
1431     }
1432 }
1433
1434 wxTextPos wxTextCtrl::GetLastPosition() const
1435 {
1436     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1437
1438     int pos = 0;
1439
1440     if (m_windowStyle & wxTE_MULTILINE)
1441     {
1442 #ifdef __WXGTK20__
1443         GtkTextIter end;
1444         gtk_text_buffer_get_end_iter( m_buffer, &end );
1445
1446         pos = gtk_text_iter_get_offset( &end );
1447 #else
1448         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1449 #endif
1450     }
1451     else
1452     {
1453         pos = GTK_ENTRY(m_text)->text_length;
1454     }
1455
1456     return (long)pos;
1457 }
1458
1459 void wxTextCtrl::Remove( long from, long to )
1460 {
1461     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1462
1463 #ifdef __WXGTK20__
1464     if (m_windowStyle & wxTE_MULTILINE)
1465     {
1466         GtkTextIter fromi, toi;
1467         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1468         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1469
1470         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1471     }
1472     else // single line
1473 #endif
1474     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1475 }
1476
1477 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1478 {
1479     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1480
1481     Remove( from, to );
1482
1483     if (!value.empty())
1484     {
1485 #ifdef __WXGTK20__
1486         SetInsertionPoint( from );
1487         WriteText( value );
1488 #else // GTK 1.x
1489         gint pos = (gint)from;
1490 #if wxUSE_UNICODE
1491         wxWX2MBbuf buf = value.mbc_str();
1492         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1493 #else
1494         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1495 #endif // wxUSE_UNICODE
1496 #endif // GTK 1.x/2.x
1497     }
1498 }
1499
1500 void wxTextCtrl::Cut()
1501 {
1502     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1503
1504 #ifdef __WXGTK20__
1505     if (m_windowStyle & wxTE_MULTILINE)
1506         g_signal_emit_by_name(m_text, "cut-clipboard");
1507     else
1508 #endif
1509         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1510 }
1511
1512 void wxTextCtrl::Copy()
1513 {
1514     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1515
1516 #ifdef __WXGTK20__
1517     if (m_windowStyle & wxTE_MULTILINE)
1518         g_signal_emit_by_name(m_text, "copy-clipboard");
1519     else
1520 #endif
1521         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1522 }
1523
1524 void wxTextCtrl::Paste()
1525 {
1526     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1527
1528 #ifdef __WXGTK20__
1529     if (m_windowStyle & wxTE_MULTILINE)
1530         g_signal_emit_by_name(m_text, "paste-clipboard");
1531     else
1532 #endif
1533         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1534 }
1535
1536 // Undo/redo
1537 void wxTextCtrl::Undo()
1538 {
1539     // TODO
1540     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1541 }
1542
1543 void wxTextCtrl::Redo()
1544 {
1545     // TODO
1546     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1547 }
1548
1549 bool wxTextCtrl::CanUndo() const
1550 {
1551     // TODO
1552     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1553     return false;
1554 }
1555
1556 bool wxTextCtrl::CanRedo() const
1557 {
1558     // TODO
1559     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1560     return false;
1561 }
1562
1563 // If the return values from and to are the same, there is no
1564 // selection.
1565 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1566 {
1567     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1568
1569     gint from = -1;
1570     gint to = -1;
1571     bool haveSelection = false;
1572
1573 #ifdef __WXGTK20__
1574      if (m_windowStyle & wxTE_MULTILINE)
1575      {
1576          GtkTextIter ifrom, ito;
1577          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1578          {
1579              haveSelection = true;
1580              from = gtk_text_iter_get_offset(&ifrom);
1581              to = gtk_text_iter_get_offset(&ito);
1582          }
1583      }
1584      else  // not multi-line
1585      {
1586          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1587                                                  &from, &to) )
1588          {
1589              haveSelection = true;
1590          }
1591      }
1592 #else //  not GTK2
1593      if ( (GTK_EDITABLE(m_text)->has_selection) )
1594      {
1595          haveSelection = true;
1596          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1597          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1598      }
1599 #endif
1600
1601      if (! haveSelection )
1602           from = to = GetInsertionPoint();
1603
1604      if ( from > to )
1605      {
1606          // exchange them to be compatible with wxMSW
1607          gint tmp = from;
1608          from = to;
1609          to = tmp;
1610      }
1611
1612     if ( fromOut )
1613         *fromOut = from;
1614     if ( toOut )
1615         *toOut = to;
1616 }
1617
1618
1619 bool wxTextCtrl::IsEditable() const
1620 {
1621     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1622
1623 #ifdef __WXGTK20__
1624     if (m_windowStyle & wxTE_MULTILINE)
1625     {
1626         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1627     }
1628     else
1629     {
1630         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1631     }
1632 #else
1633     return GTK_EDITABLE(m_text)->editable;
1634 #endif
1635 }
1636
1637 bool wxTextCtrl::IsModified() const
1638 {
1639     return m_modified;
1640 }
1641
1642 void wxTextCtrl::Clear()
1643 {
1644     SetValue( wxT("") );
1645 }
1646
1647 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1648 {
1649     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1650
1651     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1652     {
1653         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1654         event.SetEventObject(this);
1655         event.SetString(GetValue());
1656         if (GetEventHandler()->ProcessEvent(event)) return;
1657     }
1658
1659     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1660     {
1661         // This will invoke the dialog default action, such
1662         // as the clicking the default button.
1663
1664         wxWindow *top_frame = m_parent;
1665         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1666             top_frame = top_frame->GetParent();
1667
1668         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1669         {
1670             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1671
1672             if (window->default_widget)
1673             {
1674                 gtk_widget_activate (window->default_widget);
1675                 return;
1676             }
1677         }
1678     }
1679
1680     key_event.Skip();
1681 }
1682
1683 GtkWidget* wxTextCtrl::GetConnectWidget()
1684 {
1685     return GTK_WIDGET(m_text);
1686 }
1687
1688 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1689 {
1690     if (m_windowStyle & wxTE_MULTILINE)
1691     {
1692 #ifdef __WXGTK20__
1693         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1694 #else
1695         return (window == GTK_TEXT(m_text)->text_area);
1696 #endif
1697     }
1698     else
1699     {
1700         return (window == GTK_ENTRY(m_text)->text_area);
1701     }
1702 }
1703
1704 // the font will change for subsequent text insertiongs
1705 bool wxTextCtrl::SetFont( const wxFont &font )
1706 {
1707     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1708
1709     if ( !wxTextCtrlBase::SetFont(font) )
1710     {
1711         // font didn't change, nothing to do
1712         return false;
1713     }
1714
1715     if ( m_windowStyle & wxTE_MULTILINE )
1716     {
1717         SetUpdateFont(true);
1718
1719         m_defaultStyle.SetFont(font);
1720
1721         ChangeFontGlobally();
1722     }
1723
1724     return true;
1725 }
1726
1727 void wxTextCtrl::ChangeFontGlobally()
1728 {
1729     // this method is very inefficient and hence should be called as rarely as
1730     // possible!
1731     //
1732     // TODO: it can be implemented much more efficiently for GTK2
1733 #ifndef __WXGTK20__
1734     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1735
1736                   _T("shouldn't be called for single line controls") );
1737 #else
1738     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1739                   _T("shouldn't be called for single line controls") );
1740 #endif
1741
1742     wxString value = GetValue();
1743     if ( !value.empty() )
1744     {
1745         SetUpdateFont(false);
1746
1747         Clear();
1748         AppendText(value);
1749     }
1750 }
1751
1752 #ifndef __WXGTK20__
1753
1754 void wxTextCtrl::UpdateFontIfNeeded()
1755 {
1756     if ( m_updateFont )
1757         ChangeFontGlobally();
1758 }
1759
1760 #endif // GTK+ 1.x
1761
1762 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1763 {
1764     if ( !wxControl::SetForegroundColour(colour) )
1765         return false;
1766
1767     // update default fg colour too
1768     m_defaultStyle.SetTextColour(colour);
1769
1770     return true;
1771 }
1772
1773 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1774 {
1775     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1776
1777     if ( !wxControl::SetBackgroundColour( colour ) )
1778         return false;
1779
1780 #ifndef __WXGTK20__
1781     if (!m_widget->window)
1782         return false;
1783 #endif
1784
1785     if (!m_backgroundColour.Ok())
1786         return false;
1787
1788     if (m_windowStyle & wxTE_MULTILINE)
1789     {
1790 #ifndef __WXGTK20__
1791         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1792         if (!window)
1793             return false;
1794         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1795         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1796         gdk_window_clear( window );
1797 #endif
1798     }
1799
1800     // change active background color too
1801     m_defaultStyle.SetBackgroundColour( colour );
1802
1803     return true;
1804 }
1805
1806 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1807 {
1808     if ( m_windowStyle & wxTE_MULTILINE )
1809     {
1810         if ( style.IsDefault() )
1811         {
1812             // nothing to do
1813             return true;
1814         }
1815 #ifdef __WXGTK20__
1816         gint l = gtk_text_buffer_get_char_count( m_buffer );
1817
1818         wxCHECK_MSG( start >= 0 && end <= l, false,
1819                      _T("invalid range in wxTextCtrl::SetStyle") );
1820
1821         GtkTextIter starti, endi;
1822         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1823         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1824
1825         // use the attributes from style which are set in it and fall back
1826         // first to the default style and then to the text control default
1827         // colours for the others
1828         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1829
1830         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1831
1832         return true;
1833 #else
1834         // VERY dirty way to do that - removes the required text and re-adds it
1835         // with styling (FIXME)
1836
1837         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1838
1839         wxCHECK_MSG( start >= 0 && end <= l, false,
1840                      _T("invalid range in wxTextCtrl::SetStyle") );
1841
1842         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1843         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1844         wxString tmp(text,*wxConvCurrent);
1845         g_free( text );
1846
1847         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1848         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1849
1850 #if wxUSE_UNICODE
1851         wxWX2MBbuf buf = tmp.mbc_str();
1852         const char *txt = buf;
1853         size_t txtlen = strlen(buf);
1854 #else
1855         const char *txt = tmp;
1856         size_t txtlen = tmp.length();
1857 #endif
1858
1859         // use the attributes from style which are set in it and fall back
1860         // first to the default style and then to the text control default
1861         // colours for the others
1862         wxGtkTextInsert(m_text,
1863                         wxTextAttr::Combine(style, m_defaultStyle, this),
1864                         txt,
1865                         txtlen);
1866
1867         /* does not seem to help under GTK+ 1.2 !!!
1868         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1869         SetInsertionPoint( old_pos );
1870 #endif
1871         return true;
1872     }
1873     else // singe line
1874     {
1875         // cannot do this for GTK+'s Entry widget
1876         return false;
1877     }
1878 }
1879
1880 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1881 {
1882     gtk_widget_modify_style(m_text, style);
1883 }
1884
1885 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1886 {
1887     Cut();
1888 }
1889
1890 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1891 {
1892     Copy();
1893 }
1894
1895 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1896 {
1897     Paste();
1898 }
1899
1900 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1901 {
1902     Undo();
1903 }
1904
1905 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1906 {
1907     Redo();
1908 }
1909
1910 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1911 {
1912     event.Enable( CanCut() );
1913 }
1914
1915 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1916 {
1917     event.Enable( CanCopy() );
1918 }
1919
1920 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1921 {
1922     event.Enable( CanPaste() );
1923 }
1924
1925 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1926 {
1927     event.Enable( CanUndo() );
1928 }
1929
1930 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1931 {
1932     event.Enable( CanRedo() );
1933 }
1934
1935 void wxTextCtrl::OnInternalIdle()
1936 {
1937     wxCursor cursor = m_cursor;
1938     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1939
1940     if (cursor.Ok())
1941     {
1942 #ifndef __WXGTK20__
1943         GdkWindow *window = (GdkWindow*) NULL;
1944         if (HasFlag(wxTE_MULTILINE))
1945             window = GTK_TEXT(m_text)->text_area;
1946         else
1947             window = GTK_ENTRY(m_text)->text_area;
1948
1949         if (window)
1950             gdk_window_set_cursor( window, cursor.GetCursor() );
1951
1952         if (!g_globalCursor.Ok())
1953             cursor = *wxSTANDARD_CURSOR;
1954
1955         window = m_widget->window;
1956         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1957             gdk_window_set_cursor( window, cursor.GetCursor() );
1958 #endif
1959     }
1960
1961     if (g_delayedFocus == this)
1962     {
1963         if (GTK_WIDGET_REALIZED(m_widget))
1964         {
1965             gtk_widget_grab_focus( m_widget );
1966             g_delayedFocus = NULL;
1967         }
1968     }
1969
1970     if (wxUpdateUIEvent::CanUpdate(this))
1971         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1972 }
1973
1974 wxSize wxTextCtrl::DoGetBestSize() const
1975 {
1976     // FIXME should be different for multi-line controls...
1977     wxSize ret( wxControl::DoGetBestSize() );
1978     wxSize best(80, ret.y);
1979     CacheBestSize(best);
1980     return best;
1981 }
1982
1983 // ----------------------------------------------------------------------------
1984 // freeze/thaw
1985 // ----------------------------------------------------------------------------
1986
1987 void wxTextCtrl::Freeze()
1988 {
1989     if ( HasFlag(wxTE_MULTILINE) )
1990     {
1991 #ifdef __WXGTK20__
1992         if ( !m_frozenness++ )
1993         {
1994             // freeze textview updates and remove buffer
1995             g_signal_connect( G_OBJECT(m_text), "expose_event",
1996                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1997             g_signal_connect( G_OBJECT(m_widget), "expose_event",
1998                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1999             gtk_widget_set_sensitive(m_widget, false);
2000             g_object_ref(m_buffer);
2001             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
2002     }
2003 #else
2004         gtk_text_freeze(GTK_TEXT(m_text));
2005 #endif
2006     }
2007 }
2008
2009 void wxTextCtrl::Thaw()
2010 {
2011     if ( HasFlag(wxTE_MULTILINE) )
2012     {
2013 #ifdef __WXGTK20__
2014         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
2015
2016         if ( !--m_frozenness )
2017         {
2018             // Reattach buffer and thaw textview updates
2019             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
2020             g_object_unref(m_buffer);
2021             gtk_widget_set_sensitive(m_widget, true);
2022             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
2023             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
2024         }
2025 #else
2026         GTK_TEXT(m_text)->vadj->value = 0.0;
2027
2028         gtk_text_thaw(GTK_TEXT(m_text));
2029 #endif
2030     }
2031 }
2032
2033 // ----------------------------------------------------------------------------
2034 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
2035 // ----------------------------------------------------------------------------
2036
2037 #ifdef __WXGTK20__
2038
2039 // FIXME: when dragging on a link the sample gets an "Unknown event".
2040 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
2041 // a buggy sample, or something else
2042 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
2043 {
2044     event.Skip();
2045     if(!(m_windowStyle & wxTE_AUTO_URL))
2046         return;
2047
2048     gint x, y;
2049     GtkTextIter start, end;
2050     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
2051                                                 "wxUrl");
2052
2053     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
2054                                           event.GetX(), event.GetY(), &x, &y);
2055
2056     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
2057     if (!gtk_text_iter_has_tag(&end, tag))
2058     {
2059         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
2060                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
2061         return;
2062     }
2063
2064     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
2065                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
2066
2067     start = end;
2068     if(!gtk_text_iter_begins_tag(&start, tag))
2069         gtk_text_iter_backward_to_tag_toggle(&start, tag);
2070     if(!gtk_text_iter_ends_tag(&end, tag))
2071         gtk_text_iter_forward_to_tag_toggle(&end, tag);
2072
2073     // Native context menu is probably not desired on an URL.
2074     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
2075     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
2076         event.Skip(false);
2077
2078     wxTextUrlEvent url_event(m_windowId, event,
2079                              gtk_text_iter_get_offset(&start),
2080                              gtk_text_iter_get_offset(&end));
2081
2082     InitCommandEvent(url_event);
2083     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
2084     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
2085     GetEventHandler()->ProcessEvent(url_event);
2086 }
2087 #endif // gtk2
2088
2089 // ----------------------------------------------------------------------------
2090 // scrolling
2091 // ----------------------------------------------------------------------------
2092
2093 GtkAdjustment *wxTextCtrl::GetVAdj() const
2094 {
2095     if ( !IsMultiLine() )
2096         return NULL;
2097
2098 #ifdef __WXGTK20__
2099     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
2100 #else
2101     return GTK_TEXT(m_text)->vadj;
2102 #endif
2103 }
2104
2105 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
2106 {
2107     float value = adj->value + diff;
2108
2109     if ( value < 0 )
2110         value = 0;
2111
2112     float upper = adj->upper - adj->page_size;
2113     if ( value > upper )
2114         value = upper;
2115
2116     // did we noticeably change the scroll position?
2117     if ( fabs(adj->value - value) < 0.2 )
2118     {
2119         // well, this is what Robert does in wxScrollBar, so it must be good...
2120         return false;
2121     }
2122
2123     adj->value = value;
2124
2125 #ifdef __WXGTK20__
2126     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
2127 #else
2128     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
2129 #endif
2130
2131     return true;
2132 }
2133
2134 bool wxTextCtrl::ScrollLines(int lines)
2135 {
2136     GtkAdjustment *adj = GetVAdj();
2137     if ( !adj )
2138         return false;
2139
2140 #ifdef __WXGTK20__
2141     int diff = (int)ceil(lines*adj->step_increment);
2142 #else
2143     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
2144     int diff = 10*lines;
2145 #endif
2146
2147     return DoScroll(adj, diff);
2148 }
2149
2150 bool wxTextCtrl::ScrollPages(int pages)
2151 {
2152     GtkAdjustment *adj = GetVAdj();
2153     if ( !adj )
2154         return false;
2155
2156     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
2157 }
2158
2159
2160 // static
2161 wxVisualAttributes
2162 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
2163 {
2164     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
2165 }