src/gtk1/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29 #include "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 //-----------------------------------------------------------------------------
 184 //  "changed"
 185 //-----------------------------------------------------------------------------
 186
 187 static void
 188 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 189 {
 190     if ( win->IgnoreTextUpdate() )
 191         return;
 192
 193     if (!win->m_hasVMT) return;
 194
 195     if (g_isIdle)
 196         wxapp_install_idle_handler();
 197
 198     win->SetModified();
 199 #ifndef __WXGTK20__
 200     win->UpdateFontIfNeeded();
 201 #endif // !__WXGTK20__
 202
 203     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 204     event.SetEventObject( win );
 205     event.SetString( win->GetValue() );
 206     win->GetEventHandler()->ProcessEvent( event );
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210 // "expose_event" from scrolled window and textview
 211 //-----------------------------------------------------------------------------
 212
 213 #ifdef __WXGTK20__
 214 static gboolean
 215 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 216 {
 217     return TRUE;
 218 }
 219 #endif
 220
 221 //-----------------------------------------------------------------------------
 222 // "changed" from vertical scrollbar
 223 //-----------------------------------------------------------------------------
 224
 225 #ifndef __WXGTK20__
 226 static void
 227 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 228 {
 229     if (!win->m_hasVMT) return;
 230
 231     if (g_isIdle)
 232         wxapp_install_idle_handler();
 233
 234     win->CalculateScrollbar();
 235 }
 236 #endif
 237
 238 // ----------------------------------------------------------------------------
 239 // redraw callback for multiline text
 240 // ----------------------------------------------------------------------------
 241
 242 #ifndef __WXGTK20__
 243
 244 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 245 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 246 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 247 // don't do anything if we're inside wxYield()
 248
 249 extern bool wxIsInsideYield;
 250
 251 extern "C" {
 252     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 253 }
 254
 255 static GtkDrawCallback gs_gtk_text_draw = NULL;
 256
 257 extern "C"
 258 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 259 {
 260     if ( !wxIsInsideYield )
 261     {
 262         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 263                      _T("infinite recursion in wxgtk_text_draw aborted") );
 264
 265         gs_gtk_text_draw(widget, rect);
 266     }
 267 }
 268
 269 #endif // __WXGTK20__
 270
 271 //-----------------------------------------------------------------------------
 272 //  wxTextCtrl
 273 //-----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 276
 277 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 278     EVT_CHAR(wxTextCtrl::OnChar)
 279
 280     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 281     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 282     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 283     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 284     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 285
 286     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 287     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 288     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 289     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 290     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 291 END_EVENT_TABLE()
 292
 293 void wxTextCtrl::Init()
 294 {
 295     m_ignoreNextUpdate =
 296     m_modified = FALSE;
 297     SetUpdateFont(FALSE);
 298     m_text =
 299     m_vScrollbar = (GtkWidget *)NULL;
 300 #ifdef __WXGTK20__
 301     m_frozenness = 0;
 302 #endif
 303 }
 304
 305 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 306                         wxWindowID id,
 307                         const wxString &value,
 308                         const wxPoint &pos,
 309                         const wxSize &size,
 310                         long style,
 311                         const wxValidator& validator,
 312                         const wxString &name )
 313 {
 314     Init();
 315
 316     Create( parent, id, value, pos, size, style, validator, name );
 317 }
 318
 319 bool wxTextCtrl::Create( wxWindow *parent,
 320                          wxWindowID id,
 321                          const wxString &value,
 322                          const wxPoint &pos,
 323                          const wxSize &size,
 324                          long style,
 325                          const wxValidator& validator,
 326                          const wxString &name )
 327 {
 328     m_needParent = TRUE;
 329     m_acceptsFocus = TRUE;
 330
 331     if (!PreCreation( parent, pos, size ) ||
 332         !CreateBase( parent, id, pos, size, style, validator, name ))
 333     {
 334         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 335         return FALSE;
 336     }
 337
 338
 339     m_vScrollbarVisible = FALSE;
 340
 341     bool multi_line = (style & wxTE_MULTILINE) != 0;
 342
 343     if (multi_line)
 344     {
 345 #ifdef __WXGTK20__
 346         // Create view
 347         m_text = gtk_text_view_new();
 348
 349         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 350
 351         // create scrolled window
 352         m_widget = gtk_scrolled_window_new( NULL, NULL );
 353         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 354                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 355
 356         // Insert view into scrolled window
 357         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 358
 359         // Global settings which can be overridden by tags, I guess.
 360         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 361             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 362         else
 363             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 364
 365         if (!HasFlag(wxNO_BORDER))
 366             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 367
 368         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 369 #else
 370         // create our control ...
 371         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 372
 373         // ... and put into the upper left hand corner of the table
 374         bool bHasHScrollbar = FALSE;
 375         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 376         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 377         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 378                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 379                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 380                        0, 0);
 381
 382         // always wrap words
 383         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 384
 385         // finally, put the vertical scrollbar in the upper right corner
 386         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 387         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 388         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 389                      GTK_FILL,
 390                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 391                      0, 0);
 392 #endif
 393     }
 394     else
 395     {
 396         // a single-line text control: no need for scrollbars
 397         m_widget =
 398         m_text = gtk_entry_new();
 399
 400 #ifdef __WXGTK20__
 401         if (style & wxNO_BORDER)
 402             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 403 #endif
 404     }
 405
 406     m_parent->DoAddChild( this );
 407
 408     m_focusWidget = m_text;
 409
 410     PostCreation(size);
 411
 412     if (multi_line)
 413         gtk_widget_show(m_text);
 414
 415 #ifndef __WXGTK20__
 416     if (multi_line)
 417     {
 418         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 419           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 420
 421         // only initialize gs_gtk_text_draw once, starting from the next the
 422         // klass::draw will already be wxgtk_text_draw
 423         if ( !gs_gtk_text_draw )
 424         {
 425             GtkDrawCallback&
 426                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 427
 428             gs_gtk_text_draw = draw;
 429
 430             draw = wxgtk_text_draw;
 431         }
 432     }
 433 #endif // GTK+ 1.x
 434
 435     if (!value.IsEmpty())
 436     {
 437 #ifdef __WXGTK20__
 438         SetValue( value );
 439 #else
 440
 441 #if !GTK_CHECK_VERSION(1, 2, 0)
 442         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 443         // gtk_editable_insert_text()
 444         gtk_widget_realize(m_text);
 445 #endif // GTK 1.0
 446
 447         gint tmp = 0;
 448 #if wxUSE_UNICODE
 449         wxWX2MBbuf val = value.mbc_str();
 450         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 451 #else
 452         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 453 #endif
 454
 455         if (multi_line)
 456         {
 457             // Bring editable's cursor uptodate. Bug in GTK.
 458             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 459         }
 460
 461 #endif
 462     }
 463
 464     if (style & wxTE_PASSWORD)
 465     {
 466         if (!multi_line)
 467             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 468     }
 469
 470     if (style & wxTE_READONLY)
 471     {
 472         if (!multi_line)
 473             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 474 #ifdef __WXGTK20__
 475         else
 476             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 477 #else
 478     }
 479     else
 480     {
 481         if (multi_line)
 482             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 483 #endif
 484     }
 485
 486 #ifdef __WXGTK20__
 487     if (multi_line)
 488     {
 489         if (style & wxTE_RIGHT)
 490             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 491         else if (style & wxTE_CENTRE)
 492             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 493         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 494     }
 495     else
 496     {
 497 #ifdef __WXGTK24__
 498         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 499         if (!gtk_check_version(2,4,0))
 500         {
 501             if (style & wxTE_RIGHT)
 502                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 503             else if (style & wxTE_CENTRE)
 504                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 505         }
 506 #endif
 507     }
 508 #endif // __WXGTK20__
 509
 510     // We want to be notified about text changes.
 511 #ifdef __WXGTK20__
 512     if (multi_line)
 513     {
 514         g_signal_connect( G_OBJECT(m_buffer), "changed",
 515             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 516     }
 517     else
 518 #endif
 519
 520     {
 521         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 522             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 523     }
 524
 525     m_cursor = wxCursor( wxCURSOR_IBEAM );
 526
 527     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 528     SetDefaultStyle( attrDef );
 529
 530     return TRUE;
 531 }
 532
 533
 534 void wxTextCtrl::CalculateScrollbar()
 535 {
 536 #ifndef __WXGTK20__
 537     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 538
 539     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 540
 541     if (adj->upper - adj->page_size < 0.8)
 542     {
 543         if (m_vScrollbarVisible)
 544         {
 545             gtk_widget_hide( m_vScrollbar );
 546             m_vScrollbarVisible = FALSE;
 547         }
 548     }
 549     else
 550     {
 551         if (!m_vScrollbarVisible)
 552         {
 553             gtk_widget_show( m_vScrollbar );
 554             m_vScrollbarVisible = TRUE;
 555         }
 556     }
 557 #endif
 558 }
 559
 560 wxString wxTextCtrl::GetValue() const
 561 {
 562     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 563
 564     wxString tmp;
 565     if (m_windowStyle & wxTE_MULTILINE)
 566     {
 567 #ifdef __WXGTK20__
 568         GtkTextIter start;
 569         gtk_text_buffer_get_start_iter( m_buffer, &start );
 570         GtkTextIter end;
 571         gtk_text_buffer_get_end_iter( m_buffer, &end );
 572         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 573
 574 #if wxUSE_UNICODE
 575         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 576 #else
 577         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 578 #endif
 579         if ( buffer )
 580             tmp = buffer;
 581
 582         g_free( text );
 583 #else
 584         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 585         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 586         tmp = text;
 587         g_free( text );
 588 #endif
 589     }
 590     else
 591     {
 592         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 593     }
 594
 595     return tmp;
 596 }
 597
 598 void wxTextCtrl::SetValue( const wxString &value )
 599 {
 600     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 601
 602     if (m_windowStyle & wxTE_MULTILINE)
 603     {
 604 #ifdef __WXGTK20__
 605
 606 #if wxUSE_UNICODE
 607         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 608 #else
 609         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 610 #endif
 611         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 612             IgnoreNextTextUpdate();
 613
 614         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 615
 616 #else
 617         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 618         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 619         len = 0;
 620         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 621 #endif
 622     }
 623     else
 624     {
 625         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 626     }
 627
 628     // GRG, Jun/2000: Changed this after a lot of discussion in
 629     //   the lists. wxWidgets 2.2 will have a set of flags to
 630     //   customize this behaviour.
 631     SetInsertionPoint(0);
 632
 633     m_modified = FALSE;
 634 }
 635
 636 void wxTextCtrl::WriteText( const wxString &text )
 637 {
 638     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 639
 640     if ( text.empty() )
 641         return;
 642
 643     // gtk_text_changed_callback() will set m_modified to true but m_modified
 644     // shouldn't be changed by the program writing to the text control itself,
 645     // so save the old value and restore when we're done
 646     bool oldModified = m_modified;
 647
 648     if ( m_windowStyle & wxTE_MULTILINE )
 649     {
 650 #ifdef __WXGTK20__
 651
 652 #if wxUSE_UNICODE
 653         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 654 #else
 655         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 656 #endif
 657         if ( !buffer )
 658         {
 659             // what else can we do? at least don't crash...
 660             return;
 661         }
 662
 663         // TODO: Call whatever is needed to delete the selection.
 664         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 665
 666         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 667         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 668         if ( adj->value == adj->upper - adj->page_size )
 669         {
 670             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 671                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 672         }
 673 #else // GTK 1.x
 674         // After cursor movements, gtk_text_get_point() is wrong by one.
 675         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 676
 677         // always use m_defaultStyle, even if it is empty as otherwise
 678         // resetting the style and appending some more text wouldn't work: if
 679         // we don't specify the style explicitly, the old style would be used
 680         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 681         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 682
 683         // we called wxGtkTextInsert with correct font, no need to do anything
 684         // in UpdateFontIfNeeded() any longer
 685         if ( !text.empty() )
 686         {
 687             SetUpdateFont(FALSE);
 688         }
 689
 690         // Bring editable's cursor back uptodate.
 691         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 692 #endif // GTK 1.x/2.0
 693     }
 694     else // single line
 695     {
 696         // First remove the selection if there is one
 697         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 698
 699         // This moves the cursor pos to behind the inserted text.
 700         gint len = GET_EDITABLE_POS(m_text);
 701
 702 #ifdef __WXGTK20__
 703
 704 #if wxUSE_UNICODE
 705         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 706 #else
 707         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 708 #endif
 709         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 710
 711 #else
 712         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 713 #endif
 714
 715         // Bring entry's cursor uptodate.
 716         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 717     }
 718
 719     m_modified = oldModified;
 720 }
 721
 722 void wxTextCtrl::AppendText( const wxString &text )
 723 {
 724     SetInsertionPointEnd();
 725     WriteText( text );
 726 }
 727
 728 wxString wxTextCtrl::GetLineText( long lineNo ) const
 729 {
 730     if (m_windowStyle & wxTE_MULTILINE)
 731     {
 732 #ifndef __WXGTK20__
 733         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 734         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 735
 736         if (text)
 737         {
 738             wxString buf(wxT(""));
 739             long i;
 740             int currentLine = 0;
 741             for (i = 0; currentLine != lineNo && text[i]; i++ )
 742                 if (text[i] == '\n')
 743             currentLine++;
 744             // Now get the text
 745             int j;
 746             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 747                 buf += text[i];
 748
 749             g_free( text );
 750             return buf;
 751         }
 752         else
 753         {
 754             return wxEmptyString;
 755         }
 756 #else
 757         GtkTextIter line;
 758         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 759         GtkTextIter end;
 760         gtk_text_buffer_get_end_iter(m_buffer,&end );
 761         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 762         wxString result(wxGTK_CONV_BACK(text));
 763         g_free(text);
 764         return result.BeforeFirst(wxT('\n'));
 765 #endif
 766     }
 767     else
 768     {
 769         if (lineNo == 0) return GetValue();
 770         return wxEmptyString;
 771     }
 772 }
 773
 774 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 775 {
 776   /* If you implement this, don't forget to update the documentation!
 777    * (file docs/latex/wx/text.tex) */
 778     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 779 }
 780
 781 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 782 {
 783     if ( m_windowStyle & wxTE_MULTILINE )
 784     {
 785         wxString text = GetValue();
 786
 787         // cast to prevent warning. But pos really should've been unsigned.
 788         if( (unsigned long)pos > text.Len()  )
 789             return FALSE;
 790
 791         *x=0;   // First Col
 792         *y=0;   // First Line
 793
 794         const wxChar* stop = text.c_str() + pos;
 795         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 796         {
 797             if (*p == wxT('\n'))
 798             {
 799                 (*y)++;
 800                 *x=0;
 801             }
 802             else
 803                 (*x)++;
 804         }
 805     }
 806     else // single line control
 807     {
 808         if ( pos <= GTK_ENTRY(m_text)->text_length )
 809         {
 810             *y = 0;
 811             *x = pos;
 812         }
 813         else
 814         {
 815             // index out of bounds
 816             return FALSE;
 817         }
 818     }
 819
 820     return TRUE;
 821 }
 822
 823 long wxTextCtrl::XYToPosition(long x, long y ) const
 824 {
 825     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 826
 827     long pos=0;
 828     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 829
 830     pos += x;
 831     return pos;
 832 }
 833
 834 int wxTextCtrl::GetLineLength(long lineNo) const
 835 {
 836     wxString str = GetLineText (lineNo);
 837     return (int) str.Length();
 838 }
 839
 840 int wxTextCtrl::GetNumberOfLines() const
 841 {
 842     if (m_windowStyle & wxTE_MULTILINE)
 843     {
 844 #ifdef __WXGTK20__
 845         return gtk_text_buffer_get_line_count( m_buffer );
 846 #else
 847         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 848         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 849
 850         if (text)
 851         {
 852             int currentLine = 0;
 853             for (int i = 0; i < len; i++ )
 854             {
 855                 if (text[i] == '\n')
 856                     currentLine++;
 857             }
 858             g_free( text );
 859
 860             // currentLine is 0 based, add 1 to get number of lines
 861             return currentLine + 1;
 862         }
 863         else
 864         {
 865             return 0;
 866         }
 867 #endif
 868     }
 869     else
 870     {
 871         return 1;
 872     }
 873 }
 874
 875 void wxTextCtrl::SetInsertionPoint( long pos )
 876 {
 877     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 878
 879     if ( IsMultiLine() )
 880     {
 881 #ifdef __WXGTK20__
 882         GtkTextIter iter;
 883         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 884         gtk_text_buffer_place_cursor( m_buffer, &iter );
 885         gtk_text_view_scroll_mark_onscreen
 886         (
 887             GTK_TEXT_VIEW(m_text),
 888             gtk_text_buffer_get_insert( m_buffer )
 889         );
 890 #else // GTK+ 1.x
 891         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 892           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 893
 894         /* we fake a set_point by inserting and deleting. as the user
 895            isn't supposed to get to know about this non-sense, we
 896            disconnect so that no events are sent to the user program. */
 897
 898         gint tmp = (gint)pos;
 899         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 900         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 901
 902         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 903           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 904
 905         // bring editable's cursor uptodate. Bug in GTK.
 906         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 907 #endif // GTK+ 2/1
 908     }
 909     else
 910     {
 911         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 912
 913         // Bring editable's cursor uptodate. Bug in GTK.
 914         SET_EDITABLE_POS(m_text, (guint32)pos);
 915     }
 916 }
 917
 918 void wxTextCtrl::SetInsertionPointEnd()
 919 {
 920     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 921
 922     if (m_windowStyle & wxTE_MULTILINE)
 923     {
 924 #ifdef __WXGTK20__
 925         GtkTextIter end;
 926         gtk_text_buffer_get_end_iter( m_buffer, &end );
 927         gtk_text_buffer_place_cursor( m_buffer, &end );
 928 #else
 929         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 930 #endif
 931     }
 932     else
 933     {
 934         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 935     }
 936 }
 937
 938 void wxTextCtrl::SetEditable( bool editable )
 939 {
 940     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 941
 942     if (m_windowStyle & wxTE_MULTILINE)
 943     {
 944 #ifdef __WXGTK20__
 945         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 946 #else
 947         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 948 #endif
 949     }
 950     else
 951     {
 952         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 953     }
 954 }
 955
 956 bool wxTextCtrl::Enable( bool enable )
 957 {
 958     if (!wxWindowBase::Enable(enable))
 959     {
 960         // nothing to do
 961         return FALSE;
 962     }
 963
 964     if (m_windowStyle & wxTE_MULTILINE)
 965     {
 966 #ifdef __WXGTK20__
 967         SetEditable( enable );
 968 #else
 969         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 970         OnParentEnable(enable);
 971 #endif
 972     }
 973     else
 974     {
 975         gtk_widget_set_sensitive( m_text, enable );
 976     }
 977
 978     return TRUE;
 979 }
 980
 981 // wxGTK-specific: called recursively by Enable,
 982 // to give widgets an oppprtunity to correct their colours after they
 983 // have been changed by Enable
 984 void wxTextCtrl::OnParentEnable( bool enable )
 985 {
 986     // If we have a custom background colour, we use this colour in both
 987     // disabled and enabled mode, or we end up with a different colour under the
 988     // text.
 989     wxColour oldColour = GetBackgroundColour();
 990     if (oldColour.Ok())
 991     {
 992         // Need to set twice or it'll optimize the useful stuff out
 993         if (oldColour == * wxWHITE)
 994             SetBackgroundColour(*wxBLACK);
 995         else
 996             SetBackgroundColour(*wxWHITE);
 997         SetBackgroundColour(oldColour);
 998     }
 999 }
1000
1001 void wxTextCtrl::MarkDirty()
1002 {
1003     m_modified = TRUE;
1004 }
1005
1006 void wxTextCtrl::DiscardEdits()
1007 {
1008     m_modified = FALSE;
1009 }
1010
1011 // ----------------------------------------------------------------------------
1012 // max text length support
1013 // ----------------------------------------------------------------------------
1014
1015 void wxTextCtrl::IgnoreNextTextUpdate()
1016 {
1017     m_ignoreNextUpdate = TRUE;
1018 }
1019
1020 bool wxTextCtrl::IgnoreTextUpdate()
1021 {
1022     if ( m_ignoreNextUpdate )
1023     {
1024         m_ignoreNextUpdate = FALSE;
1025
1026         return TRUE;
1027     }
1028
1029     return FALSE;
1030 }
1031
1032 void wxTextCtrl::SetMaxLength(unsigned long len)
1033 {
1034     if ( !HasFlag(wxTE_MULTILINE) )
1035     {
1036         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1037
1038         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1039         // we had tried to enter more text than allowed by max text length and
1040         // the text wasn't really changed
1041         //
1042         // to detect this and generate TEXT_MAXLEN event instead of
1043         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1044         //
1045         // when max len is set to 0 we disconnect our handler as it means that
1046         // we shouldn't check anything any more
1047         if ( len )
1048         {
1049             gtk_signal_connect( GTK_OBJECT(m_text),
1050                                 "insert_text",
1051                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1052                                 (gpointer)this);
1053         }
1054         else // no checking
1055         {
1056             gtk_signal_disconnect_by_func
1057             (
1058                 GTK_OBJECT(m_text),
1059                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1060                 (gpointer)this
1061             );
1062         }
1063     }
1064 }
1065
1066 void wxTextCtrl::SetSelection( long from, long to )
1067 {
1068     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1069
1070     if (from == -1 && to == -1)
1071     {
1072         from = 0;
1073         to = GetValue().Length();
1074     }
1075
1076 #ifndef __WXGTK20__
1077     if ( (m_windowStyle & wxTE_MULTILINE) &&
1078          !GTK_TEXT(m_text)->line_start_cache )
1079     {
1080         // tell the programmer that it didn't work
1081         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1082         return;
1083     }
1084 #endif
1085
1086     if (m_windowStyle & wxTE_MULTILINE)
1087     {
1088 #ifdef __WXGTK20__
1089         GtkTextIter fromi, toi;
1090         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1091         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1092
1093         gtk_text_buffer_place_cursor( m_buffer, &toi );
1094         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1095 #else
1096         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1097 #endif
1098     }
1099     else
1100     {
1101         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1102     }
1103 }
1104
1105 void wxTextCtrl::ShowPosition( long pos )
1106 {
1107     if (m_windowStyle & wxTE_MULTILINE)
1108     {
1109 #ifdef __WXGTK20__
1110         GtkTextIter iter;
1111         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1112         gtk_text_iter_set_offset( &iter, pos );
1113         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1114         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1115 #else // GTK 1.x
1116         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1117         float totalLines =  (float) GetNumberOfLines();
1118         long posX;
1119         long posY;
1120         PositionToXY(pos, &posX, &posY);
1121         float posLine = (float) posY;
1122         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1123         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1124 #endif // GTK 1.x/2.x
1125     }
1126 }
1127
1128 #ifdef __WXGTK20__
1129
1130 wxTextCtrlHitTestResult
1131 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1132 {
1133     if ( !IsMultiLine() )
1134     {
1135         // not supported
1136         return wxTE_HT_UNKNOWN;
1137     }
1138
1139     int x, y;
1140     gtk_text_view_window_to_buffer_coords
1141     (
1142         GTK_TEXT_VIEW(m_text),
1143         GTK_TEXT_WINDOW_TEXT,
1144         pt.x, pt.y,
1145         &x, &y
1146     );
1147
1148     GtkTextIter iter;
1149     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1150     if ( pos )
1151         *pos = gtk_text_iter_get_offset(&iter);
1152
1153     return wxTE_HT_ON_TEXT;
1154 }
1155
1156 #endif // __WXGTK20__
1157
1158 long wxTextCtrl::GetInsertionPoint() const
1159 {
1160     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1161
1162 #ifdef __WXGTK20__
1163     if (m_windowStyle & wxTE_MULTILINE)
1164     {
1165         // There is no direct accessor for the cursor, but
1166         // internally, the cursor is the "mark" called
1167         // "insert" in the text view's btree structure.
1168
1169         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1170         GtkTextIter cursor;
1171         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1172
1173         return gtk_text_iter_get_offset( &cursor );
1174     }
1175     else
1176 #endif
1177     {
1178     return (long) GET_EDITABLE_POS(m_text);
1179     }
1180 }
1181
1182 long wxTextCtrl::GetLastPosition() const
1183 {
1184     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1185
1186     int pos = 0;
1187
1188     if (m_windowStyle & wxTE_MULTILINE)
1189     {
1190 #ifdef __WXGTK20__
1191         GtkTextIter end;
1192         gtk_text_buffer_get_end_iter( m_buffer, &end );
1193
1194         pos = gtk_text_iter_get_offset( &end );
1195 #else
1196         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1197 #endif
1198     }
1199     else
1200     {
1201         pos = GTK_ENTRY(m_text)->text_length;
1202     }
1203
1204     return (long)pos;
1205 }
1206
1207 void wxTextCtrl::Remove( long from, long to )
1208 {
1209     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1210
1211 #ifdef __WXGTK20__
1212     if (m_windowStyle & wxTE_MULTILINE)
1213     {
1214         GtkTextIter fromi, toi;
1215         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1216         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1217
1218         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1219     }
1220     else // single line
1221 #endif
1222     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1223 }
1224
1225 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1226 {
1227     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1228
1229     Remove( from, to );
1230
1231     if (!value.IsEmpty())
1232     {
1233 #ifdef __WXGTK20__
1234         SetInsertionPoint( from );
1235         WriteText( value );
1236 #else // GTK 1.x
1237         gint pos = (gint)from;
1238 #if wxUSE_UNICODE
1239         wxWX2MBbuf buf = value.mbc_str();
1240         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1241 #else
1242         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1243 #endif // wxUSE_UNICODE
1244 #endif // GTK 1.x/2.x
1245     }
1246 }
1247
1248 void wxTextCtrl::Cut()
1249 {
1250     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1251
1252 #ifdef __WXGTK20__
1253     if (m_windowStyle & wxTE_MULTILINE)
1254         g_signal_emit_by_name(m_text, "cut-clipboard");
1255     else
1256 #endif
1257         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1258 }
1259
1260 void wxTextCtrl::Copy()
1261 {
1262     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1263
1264 #ifdef __WXGTK20__
1265     if (m_windowStyle & wxTE_MULTILINE)
1266         g_signal_emit_by_name(m_text, "copy-clipboard");
1267     else
1268 #endif
1269         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1270 }
1271
1272 void wxTextCtrl::Paste()
1273 {
1274     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1275
1276 #ifdef __WXGTK20__
1277     if (m_windowStyle & wxTE_MULTILINE)
1278         g_signal_emit_by_name(m_text, "paste-clipboard");
1279     else
1280 #endif
1281         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1282 }
1283
1284 // Undo/redo
1285 void wxTextCtrl::Undo()
1286 {
1287     // TODO
1288     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1289 }
1290
1291 void wxTextCtrl::Redo()
1292 {
1293     // TODO
1294     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1295 }
1296
1297 bool wxTextCtrl::CanUndo() const
1298 {
1299     // TODO
1300     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1301     return FALSE;
1302 }
1303
1304 bool wxTextCtrl::CanRedo() const
1305 {
1306     // TODO
1307     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1308     return FALSE;
1309 }
1310
1311 // If the return values from and to are the same, there is no
1312 // selection.
1313 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1314 {
1315     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1316
1317     gint from = -1;
1318     gint to = -1;
1319     bool haveSelection = FALSE;
1320
1321 #ifdef __WXGTK20__
1322      if (m_windowStyle & wxTE_MULTILINE)
1323      {
1324          GtkTextIter ifrom, ito;
1325          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1326          {
1327              haveSelection = TRUE;
1328              from = gtk_text_iter_get_offset(&ifrom);
1329              to = gtk_text_iter_get_offset(&ito);
1330          }
1331      }
1332      else  // not multi-line
1333      {
1334          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1335                                                  &from, &to) )
1336          {
1337              haveSelection = TRUE;
1338          }
1339      }
1340 #else //  not GTK2
1341      if ( (GTK_EDITABLE(m_text)->has_selection) )
1342      {
1343          haveSelection = TRUE;
1344          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1345          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1346      }
1347 #endif
1348
1349      if (! haveSelection )
1350           from = to = GetInsertionPoint();
1351
1352      if ( from > to )
1353      {
1354          // exchange them to be compatible with wxMSW
1355          gint tmp = from;
1356          from = to;
1357          to = tmp;
1358      }
1359
1360     if ( fromOut )
1361         *fromOut = from;
1362     if ( toOut )
1363         *toOut = to;
1364 }
1365
1366
1367 bool wxTextCtrl::IsEditable() const
1368 {
1369     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1370
1371 #ifdef __WXGTK20__
1372     if (m_windowStyle & wxTE_MULTILINE)
1373     {
1374         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1375     }
1376     else
1377     {
1378         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1379     }
1380 #else
1381     return GTK_EDITABLE(m_text)->editable;
1382 #endif
1383 }
1384
1385 bool wxTextCtrl::IsModified() const
1386 {
1387     return m_modified;
1388 }
1389
1390 void wxTextCtrl::Clear()
1391 {
1392     SetValue( wxT("") );
1393 }
1394
1395 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1396 {
1397     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1398
1399     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1400     {
1401         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1402         event.SetEventObject(this);
1403         event.SetString(GetValue());
1404         if (GetEventHandler()->ProcessEvent(event)) return;
1405     }
1406
1407     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1408     {
1409         // This will invoke the dialog default action, such
1410         // as the clicking the default button.
1411
1412         wxWindow *top_frame = m_parent;
1413         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1414             top_frame = top_frame->GetParent();
1415
1416         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1417         {
1418             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1419
1420             if (window->default_widget)
1421             {
1422                 gtk_widget_activate (window->default_widget);
1423                 return;
1424             }
1425         }
1426     }
1427
1428     key_event.Skip();
1429 }
1430
1431 GtkWidget* wxTextCtrl::GetConnectWidget()
1432 {
1433     return GTK_WIDGET(m_text);
1434 }
1435
1436 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1437 {
1438     if (m_windowStyle & wxTE_MULTILINE)
1439     {
1440 #ifdef __WXGTK20__
1441         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1442 #else
1443         return (window == GTK_TEXT(m_text)->text_area);
1444 #endif
1445     }
1446     else
1447     {
1448         return (window == GTK_ENTRY(m_text)->text_area);
1449     }
1450 }
1451
1452 // the font will change for subsequent text insertiongs
1453 bool wxTextCtrl::SetFont( const wxFont &font )
1454 {
1455     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1456
1457     if ( !wxTextCtrlBase::SetFont(font) )
1458     {
1459         // font didn't change, nothing to do
1460         return FALSE;
1461     }
1462
1463     if ( m_windowStyle & wxTE_MULTILINE )
1464     {
1465         SetUpdateFont(TRUE);
1466
1467         m_defaultStyle.SetFont(font);
1468
1469         ChangeFontGlobally();
1470     }
1471
1472     return TRUE;
1473 }
1474
1475 void wxTextCtrl::ChangeFontGlobally()
1476 {
1477     // this method is very inefficient and hence should be called as rarely as
1478     // possible!
1479     //
1480     // TODO: it can be implemented much more efficiently for GTK2
1481 #ifndef __WXGTK20__
1482     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1483
1484                   _T("shouldn't be called for single line controls") );
1485 #else
1486     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1487                   _T("shouldn't be called for single line controls") );
1488 #endif
1489
1490     wxString value = GetValue();
1491     if ( !value.IsEmpty() )
1492     {
1493         SetUpdateFont(FALSE);
1494
1495         Clear();
1496         AppendText(value);
1497     }
1498 }
1499
1500 #ifndef __WXGTK20__
1501
1502 void wxTextCtrl::UpdateFontIfNeeded()
1503 {
1504     if ( m_updateFont )
1505         ChangeFontGlobally();
1506 }
1507
1508 #endif // GTK+ 1.x
1509
1510 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1511 {
1512     if ( !wxControl::SetForegroundColour(colour) )
1513         return FALSE;
1514
1515     // update default fg colour too
1516     m_defaultStyle.SetTextColour(colour);
1517
1518     return TRUE;
1519 }
1520
1521 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1522 {
1523     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1524
1525     if ( !wxControl::SetBackgroundColour( colour ) )
1526         return FALSE;
1527
1528 #ifndef __WXGTK20__
1529     if (!m_widget->window)
1530         return FALSE;
1531 #endif
1532
1533     if (!m_backgroundColour.Ok())
1534         return FALSE;
1535
1536     if (m_windowStyle & wxTE_MULTILINE)
1537     {
1538 #ifndef __WXGTK20__
1539         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1540         if (!window)
1541             return FALSE;
1542         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1543         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1544         gdk_window_clear( window );
1545 #endif
1546     }
1547
1548     // change active background color too
1549     m_defaultStyle.SetBackgroundColour( colour );
1550
1551     return TRUE;
1552 }
1553
1554 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1555 {
1556     if ( m_windowStyle & wxTE_MULTILINE )
1557     {
1558         if ( style.IsDefault() )
1559         {
1560             // nothing to do
1561             return TRUE;
1562         }
1563 #ifdef __WXGTK20__
1564         gint l = gtk_text_buffer_get_char_count( m_buffer );
1565
1566         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1567                      _T("invalid range in wxTextCtrl::SetStyle") );
1568
1569         GtkTextIter starti, endi;
1570         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1571         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1572
1573         // use the attributes from style which are set in it and fall back
1574         // first to the default style and then to the text control default
1575         // colours for the others
1576         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1577
1578         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1579
1580          return TRUE;
1581 #else
1582         // VERY dirty way to do that - removes the required text and re-adds it
1583         // with styling (FIXME)
1584
1585         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1586
1587         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1588                      _T("invalid range in wxTextCtrl::SetStyle") );
1589
1590         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1591         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1592         wxString tmp(text,*wxConvCurrent);
1593         g_free( text );
1594
1595         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1596         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1597
1598 #if wxUSE_UNICODE
1599         wxWX2MBbuf buf = tmp.mbc_str();
1600         const char *txt = buf;
1601         size_t txtlen = strlen(buf);
1602 #else
1603         const char *txt = tmp;
1604         size_t txtlen = tmp.length();
1605 #endif
1606
1607         // use the attributes from style which are set in it and fall back
1608         // first to the default style and then to the text control default
1609         // colours for the others
1610         wxGtkTextInsert(m_text,
1611                         wxTextAttr::Combine(style, m_defaultStyle, this),
1612                         txt,
1613                         txtlen);
1614
1615         /* does not seem to help under GTK+ 1.2 !!!
1616         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1617         SetInsertionPoint( old_pos );
1618 #endif
1619         return TRUE;
1620     }
1621     else // singe line
1622     {
1623         // cannot do this for GTK+'s Entry widget
1624         return FALSE;
1625     }
1626 }
1627
1628 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1629 {
1630     gtk_widget_modify_style(m_text, style);
1631 }
1632
1633 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1634 {
1635     Cut();
1636 }
1637
1638 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1639 {
1640     Copy();
1641 }
1642
1643 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1644 {
1645     Paste();
1646 }
1647
1648 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1649 {
1650     Undo();
1651 }
1652
1653 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1654 {
1655     Redo();
1656 }
1657
1658 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1659 {
1660     event.Enable( CanCut() );
1661 }
1662
1663 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1664 {
1665     event.Enable( CanCopy() );
1666 }
1667
1668 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1669 {
1670     event.Enable( CanPaste() );
1671 }
1672
1673 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1674 {
1675     event.Enable( CanUndo() );
1676 }
1677
1678 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1679 {
1680     event.Enable( CanRedo() );
1681 }
1682
1683 void wxTextCtrl::OnInternalIdle()
1684 {
1685     wxCursor cursor = m_cursor;
1686     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1687
1688     if (cursor.Ok())
1689     {
1690 #ifndef __WXGTK20__
1691         GdkWindow *window = (GdkWindow*) NULL;
1692         if (HasFlag(wxTE_MULTILINE))
1693             window = GTK_TEXT(m_text)->text_area;
1694         else
1695             window = GTK_ENTRY(m_text)->text_area;
1696
1697         if (window)
1698             gdk_window_set_cursor( window, cursor.GetCursor() );
1699
1700         if (!g_globalCursor.Ok())
1701             cursor = *wxSTANDARD_CURSOR;
1702
1703         window = m_widget->window;
1704         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1705             gdk_window_set_cursor( window, cursor.GetCursor() );
1706 #endif
1707     }
1708
1709     if (g_delayedFocus == this)
1710     {
1711         if (GTK_WIDGET_REALIZED(m_widget))
1712         {
1713             gtk_widget_grab_focus( m_widget );
1714             g_delayedFocus = NULL;
1715         }
1716     }
1717
1718     if (wxUpdateUIEvent::CanUpdate(this))
1719         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1720 }
1721
1722 wxSize wxTextCtrl::DoGetBestSize() const
1723 {
1724     // FIXME should be different for multi-line controls...
1725     wxSize ret( wxControl::DoGetBestSize() );
1726     wxSize best(80, ret.y);
1727     CacheBestSize(best);
1728     return best;
1729 }
1730
1731 // ----------------------------------------------------------------------------
1732 // freeze/thaw
1733 // ----------------------------------------------------------------------------
1734
1735 void wxTextCtrl::Freeze()
1736 {
1737     if ( HasFlag(wxTE_MULTILINE) )
1738     {
1739 #ifdef __WXGTK20__
1740         if ( !m_frozenness++ )
1741         {
1742             // freeze textview updates and remove buffer
1743             g_signal_connect( G_OBJECT(m_text), "expose_event",
1744                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1745             g_signal_connect( G_OBJECT(m_widget), "expose_event",
1746                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1747             gtk_widget_set_sensitive(m_widget, false);
1748             g_object_ref(m_buffer);
1749             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1750     }
1751 #else
1752         gtk_text_freeze(GTK_TEXT(m_text));
1753 #endif
1754     }
1755 }
1756
1757 void wxTextCtrl::Thaw()
1758 {
1759     if ( HasFlag(wxTE_MULTILINE) )
1760     {
1761 #ifdef __WXGTK20__
1762         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1763
1764         if ( !--m_frozenness )
1765         {
1766             // Reattach buffer and thaw textview updates
1767             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1768             g_object_unref(m_buffer);
1769             gtk_widget_set_sensitive(m_widget, true);
1770             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
1771             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
1772         }
1773 #else
1774         GTK_TEXT(m_text)->vadj->value = 0.0;
1775
1776         gtk_text_thaw(GTK_TEXT(m_text));
1777 #endif
1778     }
1779 }
1780
1781 // ----------------------------------------------------------------------------
1782 // scrolling
1783 // ----------------------------------------------------------------------------
1784
1785 GtkAdjustment *wxTextCtrl::GetVAdj() const
1786 {
1787     if ( !IsMultiLine() )
1788         return NULL;
1789
1790 #ifdef __WXGTK20__
1791     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1792 #else
1793     return GTK_TEXT(m_text)->vadj;
1794 #endif
1795 }
1796
1797 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1798 {
1799     float value = adj->value + diff;
1800
1801     if ( value < 0 )
1802         value = 0;
1803
1804     float upper = adj->upper - adj->page_size;
1805     if ( value > upper )
1806         value = upper;
1807
1808     // did we noticeably change the scroll position?
1809     if ( fabs(adj->value - value) < 0.2 )
1810     {
1811         // well, this is what Robert does in wxScrollBar, so it must be good...
1812         return FALSE;
1813     }
1814
1815     adj->value = value;
1816
1817 #ifdef __WXGTK20__
1818     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1819 #else
1820     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1821 #endif
1822
1823     return TRUE;
1824 }
1825
1826 bool wxTextCtrl::ScrollLines(int lines)
1827 {
1828     GtkAdjustment *adj = GetVAdj();
1829     if ( !adj )
1830         return FALSE;
1831
1832 #ifdef __WXGTK20__
1833     int diff = (int)ceil(lines*adj->step_increment);
1834 #else
1835     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1836     int diff = 10*lines;
1837 #endif
1838
1839     return DoScroll(adj, diff);
1840 }
1841
1842 bool wxTextCtrl::ScrollPages(int pages)
1843 {
1844     GtkAdjustment *adj = GetVAdj();
1845     if ( !adj )
1846         return FALSE;
1847
1848     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1849 }
1850
1851
1852 // static
1853 wxVisualAttributes
1854 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1855 {
1856     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1857 }