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