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