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 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/log.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23 #include <ctype.h>
  24
  25 #include "gdk/gdk.h"
  26 #include "gtk/gtk.h"
  27 #include "gdk/gdkkeysyms.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool       g_blockEventsOnDrag;
  41 extern wxCursor   g_globalCursor;
  42
  43 //-----------------------------------------------------------------------------
  44 //  "changed"
  45 //-----------------------------------------------------------------------------
  46
  47 static void
  48 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  49 {
  50     if (!win->m_hasVMT) return;
  51
  52     if (g_isIdle)
  53         wxapp_install_idle_handler();
  54
  55     win->SetModified();
  56     win->UpdateFontIfNeeded();
  57
  58     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  59     event.SetString( win->GetValue() );
  60     event.SetEventObject( win );
  61     win->GetEventHandler()->ProcessEvent( event );
  62 }
  63
  64 //-----------------------------------------------------------------------------
  65 // "changed" from vertical scrollbar
  66 //-----------------------------------------------------------------------------
  67
  68 static void
  69 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  70 {
  71     if (!win->m_hasVMT) return;
  72
  73     if (g_isIdle)
  74         wxapp_install_idle_handler();
  75
  76     win->CalculateScrollbar();
  77 }
  78
  79 //-----------------------------------------------------------------------------
  80 // "focus_in_event"
  81 //-----------------------------------------------------------------------------
  82
  83 wxWindow *FindFocusedChild(wxWindow *win);
  84 extern wxWindow  *g_focusWindow;
  85 extern bool       g_blockEventsOnDrag;
  86 // extern bool g_isIdle;
  87
  88 static gint gtk_text_focus_in_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
  89 {
  90     // Necessary?
  91 #if 0
  92     if (g_isIdle)
  93         wxapp_install_idle_handler();
  94 #endif
  95     if (!win->m_hasVMT) return FALSE;
  96     if (g_blockEventsOnDrag) return FALSE;
  97
  98     g_focusWindow = win;
  99
 100     wxPanel *panel = wxDynamicCast(win->GetParent(), wxPanel);
 101     if (panel)
 102     {
 103         panel->SetLastFocus(win);
 104     }
 105
 106 #ifdef HAVE_XIM
 107     if (win->m_ic)
 108         gdk_im_begin(win->m_ic, win->m_wxwindow->window);
 109 #endif
 110
 111 #if 0
 112 #ifdef wxUSE_CARET
 113     // caret needs to be informed about focus change
 114     wxCaret *caret = win->GetCaret();
 115     if ( caret )
 116     {
 117         caret->OnSetFocus();
 118     }
 119 #endif // wxUSE_CARET
 120 #endif
 121
 122     wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 123     event.SetEventObject( win );
 124
 125     if (win->GetEventHandler()->ProcessEvent( event ))
 126     {
 127         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_in_event" );
 128         return TRUE;
 129     }
 130
 131     return FALSE;
 132 }
 133
 134 //-----------------------------------------------------------------------------
 135 // "focus_out_event"
 136 //-----------------------------------------------------------------------------
 137
 138 static gint gtk_text_focus_out_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
 139 {
 140 #if 0
 141     if (g_isIdle)
 142         wxapp_install_idle_handler();
 143 #endif
 144
 145     if (!win->m_hasVMT) return FALSE;
 146     if (g_blockEventsOnDrag) return FALSE;
 147
 148 #if 0
 149     // if the focus goes out of our app alltogether, OnIdle() will send
 150     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 151     // g_sendActivateEvent to -1
 152     g_sendActivateEvent = 0;
 153 #endif
 154
 155     wxWindow *winFocus = FindFocusedChild(win);
 156     if ( winFocus )
 157         win = winFocus;
 158
 159     g_focusWindow = (wxWindow *)NULL;
 160
 161 #ifdef HAVE_XIM
 162     if (win->m_ic)
 163         gdk_im_end();
 164 #endif
 165
 166 #if 0
 167 #ifdef wxUSE_CARET
 168     // caret needs to be informed about focus change
 169     wxCaret *caret = win->GetCaret();
 170     if ( caret )
 171     {
 172         caret->OnKillFocus();
 173     }
 174 #endif // wxUSE_CARET
 175 #endif
 176
 177     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
 178     event.SetEventObject( win );
 179
 180     if (win->GetEventHandler()->ProcessEvent( event ))
 181     {
 182         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_out_event" );
 183         return TRUE;
 184     }
 185
 186     return FALSE;
 187 }
 188
 189 //-----------------------------------------------------------------------------
 190 //  wxTextCtrl
 191 //-----------------------------------------------------------------------------
 192
 193 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 194
 195 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 196     EVT_CHAR(wxTextCtrl::OnChar)
 197
 198     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 199     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 200     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 201     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 202     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 203
 204     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 205     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 206     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 207     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 208     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 209 END_EVENT_TABLE()
 210
 211 void wxTextCtrl::Init()
 212 {
 213     m_modified = FALSE;
 214     m_updateFont = FALSE;
 215     m_text =
 216     m_vScrollbar = (GtkWidget *)NULL;
 217 }
 218
 219 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 220                         wxWindowID id,
 221                         const wxString &value,
 222                         const wxPoint &pos,
 223                         const wxSize &size,
 224                         long style,
 225                         const wxValidator& validator,
 226                         const wxString &name )
 227 {
 228     Init();
 229
 230     Create( parent, id, value, pos, size, style, validator, name );
 231 }
 232
 233 bool wxTextCtrl::Create( wxWindow *parent,
 234                          wxWindowID id,
 235                          const wxString &value,
 236                          const wxPoint &pos,
 237                          const wxSize &size,
 238                          long style,
 239                          const wxValidator& validator,
 240                          const wxString &name )
 241 {
 242     m_needParent = TRUE;
 243     m_acceptsFocus = TRUE;
 244
 245     if (!PreCreation( parent, pos, size ) ||
 246         !CreateBase( parent, id, pos, size, style, validator, name ))
 247     {
 248         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 249         return FALSE;
 250     }
 251
 252
 253     m_vScrollbarVisible = FALSE;
 254
 255     bool multi_line = (style & wxTE_MULTILINE) != 0;
 256     if (multi_line)
 257     {
 258 #if (GTK_MINOR_VERSION > 2)
 259         /* a multi-line edit control: create a vertical scrollbar by default and
 260            horizontal if requested */
 261         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 262 #else
 263         bool bHasHScrollbar = FALSE;
 264 #endif
 265
 266         /* create our control ... */
 267         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 268
 269         /* ... and put into the upper left hand corner of the table */
 270         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 271         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 272         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 273                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 274                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 275                        0, 0);
 276
 277         /* always wrap words */
 278         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 279
 280 #if (GTK_MINOR_VERSION > 2)
 281         /* put the horizontal scrollbar in the lower left hand corner */
 282         if (bHasHScrollbar)
 283         {
 284             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 285             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 286             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 287                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 288                        GTK_FILL,
 289                        0, 0);
 290             gtk_widget_show(hscrollbar);
 291
 292             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 293             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 294         }
 295 #endif
 296
 297         /* finally, put the vertical scrollbar in the upper right corner */
 298         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 299         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 300         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 301                      GTK_FILL,
 302                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 303                      0, 0);
 304     }
 305     else
 306     {
 307         /* a single-line text control: no need for scrollbars */
 308         m_widget =
 309           m_text = gtk_entry_new();
 310     }
 311
 312     m_parent->DoAddChild( this );
 313
 314     PostCreation();
 315
 316     SetFont( parent->GetFont() );
 317
 318     wxSize size_best( DoGetBestSize() );
 319     wxSize new_size( size );
 320     if (new_size.x == -1)
 321         new_size.x = size_best.x;
 322     if (new_size.y == -1)
 323         new_size.y = size_best.y;
 324     if ((new_size.x != size.x) || (new_size.y != size.y))
 325         SetSize( new_size.x, new_size.y );
 326
 327     if (multi_line)
 328         gtk_widget_show(m_text);
 329
 330     if (multi_line)
 331     {
 332         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 333           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 334
 335         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_in_event",
 336               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 337
 338         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_out_event",
 339                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 340     }
 341     else
 342     {
 343         gtk_signal_connect( GTK_OBJECT(m_text), "focus_in_event",
 344               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 345
 346         gtk_signal_connect( GTK_OBJECT(m_text), "focus_out_event",
 347                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 348     }
 349
 350     if (!value.IsEmpty())
 351     {
 352         gint tmp = 0;
 353
 354 #if GTK_MINOR_VERSION == 0
 355         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 356         // gtk_editable_insert_text()
 357         gtk_widget_realize(m_text);
 358 #endif // GTK 1.0
 359
 360 #if wxUSE_UNICODE
 361         wxWX2MBbuf val = value.mbc_str();
 362         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 363 #else // !Unicode
 364         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 365 #endif // Unicode/!Unicode
 366
 367         if (multi_line)
 368         {
 369             /* bring editable's cursor uptodate. bug in GTK. */
 370
 371             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 372         }
 373     }
 374
 375     if (style & wxTE_PASSWORD)
 376     {
 377         if (!multi_line)
 378             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 379     }
 380
 381     if (style & wxTE_READONLY)
 382     {
 383         if (!multi_line)
 384             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 385     }
 386     else
 387     {
 388         if (multi_line)
 389             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 390     }
 391
 392     /* we want to be notified about text changes */
 393     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 394       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 395
 396     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 397     SetForegroundColour( parent->GetForegroundColour() );
 398
 399     m_cursor = wxCursor( wxCURSOR_IBEAM );
 400
 401     Show( TRUE );
 402
 403     return TRUE;
 404 }
 405
 406 void wxTextCtrl::CalculateScrollbar()
 407 {
 408     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 409
 410     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 411
 412     if (adj->upper - adj->page_size < 0.8)
 413     {
 414         if (m_vScrollbarVisible)
 415         {
 416             gtk_widget_hide( m_vScrollbar );
 417             m_vScrollbarVisible = FALSE;
 418         }
 419     }
 420     else
 421     {
 422         if (!m_vScrollbarVisible)
 423         {
 424             gtk_widget_show( m_vScrollbar );
 425             m_vScrollbarVisible = TRUE;
 426         }
 427     }
 428 }
 429
 430 wxString wxTextCtrl::GetValue() const
 431 {
 432     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 433
 434     wxString tmp;
 435     if (m_windowStyle & wxTE_MULTILINE)
 436     {
 437         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 438         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 439         tmp = wxString(text,*wxConvCurrent);
 440         g_free( text );
 441     }
 442     else
 443     {
 444         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 445     }
 446     return tmp;
 447 }
 448
 449 void wxTextCtrl::SetValue( const wxString &value )
 450 {
 451     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 452
 453     if (m_windowStyle & wxTE_MULTILINE)
 454     {
 455         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 456         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 457         len = 0;
 458 #if wxUSE_UNICODE
 459         wxWX2MBbuf tmpbuf = value.mbc_str();
 460         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 461 #else
 462         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 463 #endif
 464     }
 465     else
 466     {
 467         gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
 468     }
 469
 470     // GRG, Jun/2000: Changed this after a lot of discussion in
 471     //   the lists. wxWindows 2.2 will have a set of flags to
 472     //   customize this behaviour.
 473     SetInsertionPoint(0);
 474
 475     m_modified = FALSE;
 476 }
 477
 478 void wxTextCtrl::WriteText( const wxString &text )
 479 {
 480     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 481
 482     if (text.IsEmpty()) return;
 483
 484     if (m_windowStyle & wxTE_MULTILINE)
 485     {
 486         /* this moves the cursor pos to behind the inserted text */
 487         gint len = GTK_EDITABLE(m_text)->current_pos;
 488
 489 #if wxUSE_UNICODE
 490         wxWX2MBbuf buf = text.mbc_str();
 491         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 492 #else
 493         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 494 #endif
 495
 496         /* bring editable's cursor uptodate. bug in GTK. */
 497         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 498     }
 499     else
 500     {
 501         /* this moves the cursor pos to behind the inserted text */
 502         gint len = GTK_EDITABLE(m_text)->current_pos;
 503 #if wxUSE_UNICODE
 504         wxWX2MBbuf buf = text.mbc_str();
 505         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 506 #else
 507         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 508 #endif
 509
 510         /* bring editable's cursor uptodate. bug in GTK. */
 511         GTK_EDITABLE(m_text)->current_pos += text.Len();
 512
 513         /* bring entry's cursor uptodate. bug in GTK. */
 514         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 515     }
 516 }
 517
 518 void wxTextCtrl::AppendText( const wxString &text )
 519 {
 520     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 521
 522     if (text.IsEmpty()) return;
 523
 524     if (m_windowStyle & wxTE_MULTILINE)
 525     {
 526         bool hasSpecialAttributes = m_font.Ok() ||
 527                                     m_foregroundColour.Ok() ||
 528                                     m_backgroundColour.Ok();
 529         if ( hasSpecialAttributes )
 530         {
 531              gtk_text_insert( GTK_TEXT(m_text),
 532                               m_font.GetInternalFont(),
 533                               m_foregroundColour.GetColor(),
 534                               m_backgroundColour.GetColor(),
 535                               text.mbc_str(), text.length());
 536
 537         }
 538         else
 539         {
 540             /* we'll insert at the last position */
 541             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 542 #if wxUSE_UNICODE
 543             wxWX2MBbuf buf = text.mbc_str();
 544             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 545 #else
 546             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 547 #endif
 548         }
 549
 550         /* bring editable's cursor uptodate. bug in GTK. */
 551         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 552     }
 553     else
 554     {
 555         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 556     }
 557 }
 558
 559 wxString wxTextCtrl::GetLineText( long lineNo ) const
 560 {
 561   if (m_windowStyle & wxTE_MULTILINE)
 562   {
 563     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 564     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 565
 566     if (text)
 567     {
 568         wxString buf(wxT(""));
 569         long i;
 570         int currentLine = 0;
 571         for (i = 0; currentLine != lineNo && text[i]; i++ )
 572           if (text[i] == '\n')
 573             currentLine++;
 574         // Now get the text
 575         int j;
 576         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 577             buf += text[i];
 578
 579         g_free( text );
 580         return buf;
 581     }
 582     else
 583       return wxEmptyString;
 584   }
 585   else
 586   {
 587     if (lineNo == 0) return GetValue();
 588     return wxEmptyString;
 589   }
 590 }
 591
 592 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 593 {
 594   /* If you implement this, don't forget to update the documentation!
 595    * (file docs/latex/wx/text.tex) */
 596     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 597 }
 598
 599 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 600 {
 601     if ( m_windowStyle & wxTE_MULTILINE )
 602     {
 603         wxString text = GetValue();
 604
 605         // cast to prevent warning. But pos really should've been unsigned.
 606         if( (unsigned long)pos > text.Len()  )
 607             return FALSE;
 608
 609         *x=0;   // First Col
 610         *y=0;   // First Line
 611
 612         const wxChar* stop = text.c_str() + pos;
 613         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 614         {
 615             if (*p == wxT('\n'))
 616             {
 617                 (*y)++;
 618                 *x=0;
 619             }
 620             else
 621                 (*x)++;
 622         }
 623     }
 624     else // single line control
 625     {
 626         if ( pos <= GTK_ENTRY(m_text)->text_length )
 627         {
 628             *y = 0;
 629             *x = pos;
 630         }
 631         else
 632         {
 633             // index out of bounds
 634             return FALSE;
 635         }
 636     }
 637
 638     return TRUE;
 639 }
 640
 641 long wxTextCtrl::XYToPosition(long x, long y ) const
 642 {
 643     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 644
 645     long pos=0;
 646     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 647
 648     pos += x;
 649     return pos;
 650 }
 651
 652 int wxTextCtrl::GetLineLength(long lineNo) const
 653 {
 654     wxString str = GetLineText (lineNo);
 655     return (int) str.Length();
 656 }
 657
 658 int wxTextCtrl::GetNumberOfLines() const
 659 {
 660     if (m_windowStyle & wxTE_MULTILINE)
 661     {
 662         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 663         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 664
 665         if (text)
 666         {
 667             int currentLine = 0;
 668             for (int i = 0; i < len; i++ )
 669             {
 670                 if (text[i] == '\n')
 671                     currentLine++;
 672             }
 673             g_free( text );
 674
 675             // currentLine is 0 based, add 1 to get number of lines
 676             return currentLine + 1;
 677         }
 678         else
 679         {
 680             return 0;
 681         }
 682     }
 683     else
 684     {
 685         return 1;
 686     }
 687 }
 688
 689 void wxTextCtrl::SetInsertionPoint( long pos )
 690 {
 691     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 692
 693     if (m_windowStyle & wxTE_MULTILINE)
 694     {
 695         /* seems to be broken in GTK 1.0.X:
 696            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 697
 698         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 699           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 700
 701         /* we fake a set_point by inserting and deleting. as the user
 702            isn't supposed to get to know about thos non-sense, we
 703            disconnect so that no events are sent to the user program. */
 704
 705         gint tmp = (gint)pos;
 706         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 707         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 708
 709         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 710           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 711
 712         /* bring editable's cursor uptodate. another bug in GTK. */
 713
 714         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 715     }
 716     else
 717     {
 718         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 719
 720         /* bring editable's cursor uptodate. bug in GTK. */
 721
 722         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 723     }
 724 }
 725
 726 void wxTextCtrl::SetInsertionPointEnd()
 727 {
 728     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 729
 730     if (m_windowStyle & wxTE_MULTILINE)
 731         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 732     else
 733         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 734 }
 735
 736 void wxTextCtrl::SetEditable( bool editable )
 737 {
 738     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 739
 740     if (m_windowStyle & wxTE_MULTILINE)
 741         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 742     else
 743         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 744 }
 745
 746 bool wxTextCtrl::Enable( bool enable )
 747 {
 748     if (!wxWindowBase::Enable(enable))
 749     {
 750         // nothing to do
 751         return FALSE;
 752     }
 753
 754     if (m_windowStyle & wxTE_MULTILINE)
 755     {
 756         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 757     }
 758     else
 759     {
 760         gtk_widget_set_sensitive( m_text, enable );
 761     }
 762
 763     return TRUE;
 764 }
 765
 766 void wxTextCtrl::DiscardEdits()
 767 {
 768     m_modified = FALSE;
 769 }
 770
 771 void wxTextCtrl::SetSelection( long from, long to )
 772 {
 773     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 774
 775     if ( (m_windowStyle & wxTE_MULTILINE) &&
 776          !GTK_TEXT(m_text)->line_start_cache )
 777     {
 778         // tell the programmer that it didn't work
 779         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 780         return;
 781     }
 782
 783     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 784 }
 785
 786 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 787 {
 788 //    SetInsertionPoint( pos );
 789 }
 790
 791 long wxTextCtrl::GetInsertionPoint() const
 792 {
 793     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 794
 795     return (long) GTK_EDITABLE(m_text)->current_pos;
 796 }
 797
 798 long wxTextCtrl::GetLastPosition() const
 799 {
 800     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 801
 802     int pos = 0;
 803     if (m_windowStyle & wxTE_MULTILINE)
 804         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 805     else
 806         pos = GTK_ENTRY(m_text)->text_length;
 807
 808     return (long)pos;
 809 }
 810
 811 void wxTextCtrl::Remove( long from, long to )
 812 {
 813     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 814
 815     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 816 }
 817
 818 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 819 {
 820     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 821
 822     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 823
 824     if (!value.IsEmpty())
 825     {
 826         gint pos = (gint)from;
 827 #if wxUSE_UNICODE
 828         wxWX2MBbuf buf = value.mbc_str();
 829         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 830 #else
 831         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 832 #endif
 833     }
 834 }
 835
 836 void wxTextCtrl::Cut()
 837 {
 838     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 839
 840 #if (GTK_MINOR_VERSION > 0)
 841     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 842 #else
 843     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 844 #endif
 845 }
 846
 847 void wxTextCtrl::Copy()
 848 {
 849     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 850
 851 #if (GTK_MINOR_VERSION > 0)
 852     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 853 #else
 854     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 855 #endif
 856 }
 857
 858 void wxTextCtrl::Paste()
 859 {
 860     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 861
 862 #if (GTK_MINOR_VERSION > 0)
 863     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 864 #else
 865     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 866 #endif
 867 }
 868
 869 bool wxTextCtrl::CanCopy() const
 870 {
 871     // Can copy if there's a selection
 872     long from, to;
 873     GetSelection(& from, & to);
 874     return (from != to) ;
 875 }
 876
 877 bool wxTextCtrl::CanCut() const
 878 {
 879     // Can cut if there's a selection
 880     long from, to;
 881     GetSelection(& from, & to);
 882     return (from != to) && (IsEditable());
 883 }
 884
 885 bool wxTextCtrl::CanPaste() const
 886 {
 887     return IsEditable() ;
 888 }
 889
 890 // Undo/redo
 891 void wxTextCtrl::Undo()
 892 {
 893     // TODO
 894     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
 895 }
 896
 897 void wxTextCtrl::Redo()
 898 {
 899     // TODO
 900     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
 901 }
 902
 903 bool wxTextCtrl::CanUndo() const
 904 {
 905     // TODO
 906     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
 907     return FALSE;
 908 }
 909
 910 bool wxTextCtrl::CanRedo() const
 911 {
 912     // TODO
 913     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
 914     return FALSE;
 915 }
 916
 917 // If the return values from and to are the same, there is no
 918 // selection.
 919 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
 920 {
 921     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 922
 923     long from, to;
 924     if ( !(GTK_EDITABLE(m_text)->has_selection) )
 925     {
 926         from =
 927         to = GetInsertionPoint();
 928     }
 929     else // got selection
 930     {
 931         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 932         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 933
 934         if ( from > to )
 935         {
 936             // exchange them to be compatible with wxMSW
 937             long tmp = from;
 938             from = to;
 939             to = tmp;
 940         }
 941     }
 942
 943     if ( fromOut )
 944         *fromOut = from;
 945     if ( toOut )
 946         *toOut = to;
 947 }
 948
 949 bool wxTextCtrl::IsEditable() const
 950 {
 951     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 952
 953     return GTK_EDITABLE(m_text)->editable;
 954 }
 955
 956 bool wxTextCtrl::IsModified() const
 957 {
 958     return m_modified;
 959 }
 960
 961 void wxTextCtrl::Clear()
 962 {
 963     SetValue( wxT("") );
 964 }
 965
 966 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 967 {
 968     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 969
 970     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 971     {
 972         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 973         event.SetEventObject(this);
 974         event.SetString(GetValue());
 975         if (GetEventHandler()->ProcessEvent(event)) return;
 976     }
 977
 978     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
 979     {
 980         wxWindow *top_frame = m_parent;
 981         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 982             top_frame = top_frame->GetParent();
 983         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 984
 985         if (window->default_widget)
 986         {
 987             gtk_widget_activate (window->default_widget);
 988             return;
 989         }
 990     }
 991
 992     key_event.Skip();
 993 }
 994
 995 GtkWidget* wxTextCtrl::GetConnectWidget()
 996 {
 997     return GTK_WIDGET(m_text);
 998 }
 999
1000 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1001 {
1002     if (m_windowStyle & wxTE_MULTILINE)
1003         return (window == GTK_TEXT(m_text)->text_area);
1004     else
1005         return (window == GTK_ENTRY(m_text)->text_area);
1006 }
1007
1008 // the font will change for subsequent text insertiongs
1009 bool wxTextCtrl::SetFont( const wxFont &font )
1010 {
1011     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1012
1013     if ( !wxWindowBase::SetFont(font) )
1014     {
1015         // font didn't change, nothing to do
1016         return FALSE;
1017     }
1018
1019     if ( m_windowStyle & wxTE_MULTILINE )
1020     {
1021         m_updateFont = TRUE;
1022
1023         ChangeFontGlobally();
1024     }
1025
1026     return TRUE;
1027 }
1028
1029 void wxTextCtrl::ChangeFontGlobally()
1030 {
1031     // this method is very inefficient and hence should be called as rarely as
1032     // possible!
1033     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1034                   _T("shouldn't be called for single line controls") );
1035
1036     wxString value = GetValue();
1037     if ( !value.IsEmpty() )
1038     {
1039         Clear();
1040         AppendText(value);
1041
1042         m_updateFont = FALSE;
1043     }
1044 }
1045
1046 void wxTextCtrl::UpdateFontIfNeeded()
1047 {
1048     if ( m_updateFont )
1049         ChangeFontGlobally();
1050 }
1051
1052 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
1053 {
1054     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1055
1056     // doesn't work
1057     return FALSE;
1058 }
1059
1060 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1061 {
1062     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1063
1064     wxControl::SetBackgroundColour( colour );
1065
1066     if (!m_widget->window)
1067         return FALSE;
1068
1069     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1070     if (sysbg.Red() == colour.Red() &&
1071         sysbg.Green() == colour.Green() &&
1072         sysbg.Blue() == colour.Blue())
1073     {
1074         return FALSE; // FIXME or TRUE?
1075     }
1076
1077     if (!m_backgroundColour.Ok())
1078         return FALSE;
1079
1080     if (m_windowStyle & wxTE_MULTILINE)
1081     {
1082         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1083         if (!window)
1084             return FALSE;
1085         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1086         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1087         gdk_window_clear( window );
1088     }
1089
1090     return TRUE;
1091 }
1092
1093 void wxTextCtrl::ApplyWidgetStyle()
1094 {
1095     if (m_windowStyle & wxTE_MULTILINE)
1096     {
1097         // how ?
1098     }
1099     else
1100     {
1101         SetWidgetStyle();
1102         gtk_widget_set_style( m_text, m_widgetStyle );
1103     }
1104 }
1105
1106 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1107 {
1108     Cut();
1109 }
1110
1111 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1112 {
1113     Copy();
1114 }
1115
1116 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1117 {
1118     Paste();
1119 }
1120
1121 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1122 {
1123     Undo();
1124 }
1125
1126 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1127 {
1128     Redo();
1129 }
1130
1131 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1132 {
1133     event.Enable( CanCut() );
1134 }
1135
1136 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1137 {
1138     event.Enable( CanCopy() );
1139 }
1140
1141 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1142 {
1143     event.Enable( CanPaste() );
1144 }
1145
1146 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1147 {
1148     event.Enable( CanUndo() );
1149 }
1150
1151 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1152 {
1153     event.Enable( CanRedo() );
1154 }
1155
1156 void wxTextCtrl::OnInternalIdle()
1157 {
1158     wxCursor cursor = m_cursor;
1159     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1160
1161     if (cursor.Ok())
1162     {
1163         GdkWindow *window = (GdkWindow*) NULL;
1164         if (HasFlag(wxTE_MULTILINE))
1165             window = GTK_TEXT(m_text)->text_area;
1166         else
1167             window = GTK_ENTRY(m_text)->text_area;
1168
1169         if (window)
1170             gdk_window_set_cursor( window, cursor.GetCursor() );
1171
1172         if (!g_globalCursor.Ok())
1173             cursor = *wxSTANDARD_CURSOR;
1174
1175         window = m_widget->window;
1176         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1177             gdk_window_set_cursor( window, cursor.GetCursor() );
1178     }
1179
1180     UpdateWindowUI();
1181 }
1182
1183 wxSize wxTextCtrl::DoGetBestSize() const
1184 {
1185     // FIXME should be different for multi-line controls...
1186     wxSize ret( wxControl::DoGetBestSize() );
1187     return wxSize(80, ret.y);
1188 }