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 extern wxWindow  *g_focusWindow;
  84 extern bool       g_blockEventsOnDrag;
  85 // extern bool g_isIdle;
  86
  87 static gint gtk_text_focus_in_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
  88 {
  89     // Necessary?
  90 #if 0
  91     if (g_isIdle)
  92         wxapp_install_idle_handler();
  93 #endif
  94     if (!win->m_hasVMT) return FALSE;
  95     if (g_blockEventsOnDrag) return FALSE;
  96
  97     g_focusWindow = win;
  98
  99     wxPanel *panel = wxDynamicCast(win->GetParent(), wxPanel);
 100     if (panel)
 101     {
 102         panel->SetLastFocus(win);
 103     }
 104
 105 #ifdef HAVE_XIM
 106     if (win->m_ic)
 107         gdk_im_begin(win->m_ic, win->m_wxwindow->window);
 108 #endif
 109
 110 #if 0
 111 #ifdef wxUSE_CARET
 112     // caret needs to be informed about focus change
 113     wxCaret *caret = win->GetCaret();
 114     if ( caret )
 115     {
 116         caret->OnSetFocus();
 117     }
 118 #endif // wxUSE_CARET
 119 #endif
 120
 121     wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 122     event.SetEventObject( win );
 123
 124     if (win->GetEventHandler()->ProcessEvent( event ))
 125     {
 126         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_in_event" );
 127         return TRUE;
 128     }
 129
 130     return FALSE;
 131 }
 132
 133 //-----------------------------------------------------------------------------
 134 // "focus_out_event"
 135 //-----------------------------------------------------------------------------
 136
 137 static gint gtk_text_focus_out_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
 138 {
 139 #if 0
 140     if (g_isIdle)
 141         wxapp_install_idle_handler();
 142 #endif
 143
 144     if (!win->m_hasVMT) return FALSE;
 145     if (g_blockEventsOnDrag) return FALSE;
 146
 147 #if 0
 148     // if the focus goes out of our app alltogether, OnIdle() will send
 149     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 150     // g_sendActivateEvent to -1
 151     g_sendActivateEvent = 0;
 152 #endif
 153
 154     wxWindow *winFocus = wxFindFocusedChild(win);
 155     if ( winFocus )
 156         win = winFocus;
 157
 158     g_focusWindow = (wxWindow *)NULL;
 159
 160 #ifdef HAVE_XIM
 161     if (win->m_ic)
 162         gdk_im_end();
 163 #endif
 164
 165 #if 0
 166 #ifdef wxUSE_CARET
 167     // caret needs to be informed about focus change
 168     wxCaret *caret = win->GetCaret();
 169     if ( caret )
 170     {
 171         caret->OnKillFocus();
 172     }
 173 #endif // wxUSE_CARET
 174 #endif
 175
 176     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
 177     event.SetEventObject( win );
 178
 179     if (win->GetEventHandler()->ProcessEvent( event ))
 180     {
 181         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_out_event" );
 182         return TRUE;
 183     }
 184
 185     return FALSE;
 186 }
 187
 188 //-----------------------------------------------------------------------------
 189 //  wxTextCtrl
 190 //-----------------------------------------------------------------------------
 191
 192 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 193
 194 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 195     EVT_CHAR(wxTextCtrl::OnChar)
 196
 197     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 198     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 199     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 200     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 201     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 202
 203     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 204     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 205     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 206     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 207     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 208 END_EVENT_TABLE()
 209
 210 void wxTextCtrl::Init()
 211 {
 212     m_modified = FALSE;
 213     m_updateFont = FALSE;
 214     m_text =
 215     m_vScrollbar = (GtkWidget *)NULL;
 216 }
 217
 218 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 219                         wxWindowID id,
 220                         const wxString &value,
 221                         const wxPoint &pos,
 222                         const wxSize &size,
 223                         long style,
 224                         const wxValidator& validator,
 225                         const wxString &name )
 226 {
 227     Init();
 228
 229     Create( parent, id, value, pos, size, style, validator, name );
 230 }
 231
 232 bool wxTextCtrl::Create( wxWindow *parent,
 233                          wxWindowID id,
 234                          const wxString &value,
 235                          const wxPoint &pos,
 236                          const wxSize &size,
 237                          long style,
 238                          const wxValidator& validator,
 239                          const wxString &name )
 240 {
 241     m_needParent = TRUE;
 242     m_acceptsFocus = TRUE;
 243
 244     if (!PreCreation( parent, pos, size ) ||
 245         !CreateBase( parent, id, pos, size, style, validator, name ))
 246     {
 247         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 248         return FALSE;
 249     }
 250
 251
 252     m_vScrollbarVisible = FALSE;
 253
 254     bool multi_line = (style & wxTE_MULTILINE) != 0;
 255     if (multi_line)
 256     {
 257 #if (GTK_MINOR_VERSION > 2)
 258         /* a multi-line edit control: create a vertical scrollbar by default and
 259            horizontal if requested */
 260         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 261 #else
 262         bool bHasHScrollbar = FALSE;
 263 #endif
 264
 265         /* create our control ... */
 266         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 267
 268         /* ... and put into the upper left hand corner of the table */
 269         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 270         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 271         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 272                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 273                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 274                        0, 0);
 275
 276         /* always wrap words */
 277         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 278
 279 #if (GTK_MINOR_VERSION > 2)
 280         /* put the horizontal scrollbar in the lower left hand corner */
 281         if (bHasHScrollbar)
 282         {
 283             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 284             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 285             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 286                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 287                        GTK_FILL,
 288                        0, 0);
 289             gtk_widget_show(hscrollbar);
 290
 291             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 292             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 293         }
 294 #endif
 295
 296         /* finally, put the vertical scrollbar in the upper right corner */
 297         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 298         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 299         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 300                      GTK_FILL,
 301                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 302                      0, 0);
 303     }
 304     else
 305     {
 306         /* a single-line text control: no need for scrollbars */
 307         m_widget =
 308           m_text = gtk_entry_new();
 309     }
 310
 311     m_parent->DoAddChild( this );
 312
 313     PostCreation();
 314
 315     SetFont( parent->GetFont() );
 316
 317     wxSize size_best( DoGetBestSize() );
 318     wxSize new_size( size );
 319     if (new_size.x == -1)
 320         new_size.x = size_best.x;
 321     if (new_size.y == -1)
 322         new_size.y = size_best.y;
 323     if ((new_size.x != size.x) || (new_size.y != size.y))
 324         SetSize( new_size.x, new_size.y );
 325
 326     if (multi_line)
 327         gtk_widget_show(m_text);
 328
 329     if (multi_line)
 330     {
 331         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 332           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 333
 334         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_in_event",
 335               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 336
 337         gtk_signal_connect( GTK_OBJECT(GTK_TEXT(m_text)), "focus_out_event",
 338                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 339     }
 340     else
 341     {
 342         gtk_signal_connect( GTK_OBJECT(m_text), "focus_in_event",
 343               GTK_SIGNAL_FUNC(gtk_text_focus_in_callback), (gpointer)this );
 344
 345         gtk_signal_connect( GTK_OBJECT(m_text), "focus_out_event",
 346                             GTK_SIGNAL_FUNC(gtk_text_focus_out_callback), (gpointer)this );
 347     }
 348
 349     if (!value.IsEmpty())
 350     {
 351         gint tmp = 0;
 352
 353 #if GTK_MINOR_VERSION == 0
 354         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 355         // gtk_editable_insert_text()
 356         gtk_widget_realize(m_text);
 357 #endif // GTK 1.0
 358
 359 #if wxUSE_UNICODE
 360         wxWX2MBbuf val = value.mbc_str();
 361         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 362 #else // !Unicode
 363         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 364 #endif // Unicode/!Unicode
 365
 366         if (multi_line)
 367         {
 368             /* bring editable's cursor uptodate. bug in GTK. */
 369
 370             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 371         }
 372     }
 373
 374     if (style & wxTE_PASSWORD)
 375     {
 376         if (!multi_line)
 377             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 378     }
 379
 380     if (style & wxTE_READONLY)
 381     {
 382         if (!multi_line)
 383             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 384     }
 385     else
 386     {
 387         if (multi_line)
 388             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 389     }
 390
 391     /* we want to be notified about text changes */
 392     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 393       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 394
 395     /* we don't set a valid background colour, because the window
 396        manager should use a default one */
 397     m_backgroundColour = wxColour();
 398
 399     wxColour colFg = parent->GetForegroundColour();
 400     SetForegroundColour( colFg );
 401
 402     m_cursor = wxCursor( wxCURSOR_IBEAM );
 403
 404     // FIXME: is the bg colour correct here?
 405     wxTextAttr attrDef( colFg,
 406                         wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW),
 407                         parent->GetFont() );
 408     SetDefaultStyle( attrDef );
 409
 410     Show( TRUE );
 411
 412     return TRUE;
 413 }
 414
 415 void wxTextCtrl::CalculateScrollbar()
 416 {
 417     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 418
 419     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 420
 421     if (adj->upper - adj->page_size < 0.8)
 422     {
 423         if (m_vScrollbarVisible)
 424         {
 425             gtk_widget_hide( m_vScrollbar );
 426             m_vScrollbarVisible = FALSE;
 427         }
 428     }
 429     else
 430     {
 431         if (!m_vScrollbarVisible)
 432         {
 433             gtk_widget_show( m_vScrollbar );
 434             m_vScrollbarVisible = TRUE;
 435         }
 436     }
 437 }
 438
 439 wxString wxTextCtrl::GetValue() const
 440 {
 441     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 442
 443     wxString tmp;
 444     if (m_windowStyle & wxTE_MULTILINE)
 445     {
 446         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 447         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 448         tmp = wxString(text,*wxConvCurrent);
 449         g_free( text );
 450     }
 451     else
 452     {
 453         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 454     }
 455     return tmp;
 456 }
 457
 458 void wxTextCtrl::SetValue( const wxString &value )
 459 {
 460     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 461
 462     if (m_windowStyle & wxTE_MULTILINE)
 463     {
 464         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 465         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 466         len = 0;
 467 #if wxUSE_UNICODE
 468         wxWX2MBbuf tmpbuf = value.mbc_str();
 469         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 470 #else
 471         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 472 #endif
 473     }
 474     else
 475     {
 476         gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
 477     }
 478
 479     // GRG, Jun/2000: Changed this after a lot of discussion in
 480     //   the lists. wxWindows 2.2 will have a set of flags to
 481     //   customize this behaviour.
 482     SetInsertionPoint(0);
 483
 484     m_modified = FALSE;
 485 }
 486
 487 void wxTextCtrl::WriteText( const wxString &text )
 488 {
 489     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 490
 491     if ( text.empty() )
 492         return;
 493
 494 #if wxUSE_UNICODE
 495     wxWX2MBbuf buf = text.mbc_str();
 496     const char *txt = buf;
 497     size_t txtlen = strlen(buf);
 498 #else
 499     const char *txt = text;
 500     size_t txtlen = text.length();
 501 #endif
 502
 503     if ( m_windowStyle & wxTE_MULTILINE )
 504     {
 505         /* this moves the cursor pos to behind the inserted text */
 506         gint len = GTK_EDITABLE(m_text)->current_pos;
 507
 508         // if we have any special style, use it
 509         if ( !m_defaultStyle.IsDefault() )
 510         {
 511             GdkFont *font = m_defaultStyle.HasFont()
 512                                 ? m_defaultStyle.GetFont().GetInternalFont()
 513                                 : NULL;
 514
 515             GdkColor *colFg = m_defaultStyle.HasTextColour()
 516                                 ? m_defaultStyle.GetTextColour().GetColor()
 517                                 : NULL;
 518
 519             GdkColor *colBg = m_defaultStyle.HasBackgroundColour()
 520                                 ? m_defaultStyle.GetBackgroundColour().GetColor()
 521                                 : NULL;
 522
 523             gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
 524         }
 525         else // no style
 526         {
 527             gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 528         }
 529
 530         /* bring editable's cursor uptodate. bug in GTK. */
 531         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 532     }
 533     else // single line
 534     {
 535         /* this moves the cursor pos to behind the inserted text */
 536         gint len = GTK_EDITABLE(m_text)->current_pos;
 537         gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 538
 539         /* bring editable's cursor uptodate. bug in GTK. */
 540         GTK_EDITABLE(m_text)->current_pos += text.Len();
 541
 542         /* bring entry's cursor uptodate. bug in GTK. */
 543         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 544     }
 545 }
 546
 547 void wxTextCtrl::AppendText( const wxString &text )
 548 {
 549     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 550
 551     if ( text.empty() )
 552         return;
 553
 554 #if wxUSE_UNICODE
 555     wxWX2MBbuf buf = text.mbc_str();
 556     const char *txt = buf;
 557     size_t txtlen = strlen(buf);
 558 #else
 559     const char *txt = text;
 560     size_t txtlen = text.length();
 561 #endif
 562
 563     if (m_windowStyle & wxTE_MULTILINE)
 564     {
 565         if ( !m_defaultStyle.IsDefault() )
 566         {
 567             GdkFont *font = m_defaultStyle.HasFont()
 568                                 ? m_defaultStyle.GetFont().GetInternalFont()
 569                                 : NULL;
 570
 571             GdkColor *colFg = m_defaultStyle.HasTextColour()
 572                                 ? m_defaultStyle.GetTextColour().GetColor()
 573                                 : NULL;
 574
 575             GdkColor *colBg = m_defaultStyle.HasBackgroundColour()
 576                                 ? m_defaultStyle.GetBackgroundColour().GetColor()
 577                                 : NULL;
 578
 579             gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
 580         }
 581         else // no style
 582         {
 583             /* we'll insert at the last position */
 584             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 585             gtk_editable_insert_text( GTK_EDITABLE(m_text), txt, txtlen, &len );
 586         }
 587
 588         /* bring editable's cursor uptodate. bug in GTK. */
 589         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 590     }
 591     else // single line
 592     {
 593         gtk_entry_append_text( GTK_ENTRY(m_text), txt );
 594     }
 595 }
 596
 597 wxString wxTextCtrl::GetLineText( long lineNo ) const
 598 {
 599   if (m_windowStyle & wxTE_MULTILINE)
 600   {
 601     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 602     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 603
 604     if (text)
 605     {
 606         wxString buf(wxT(""));
 607         long i;
 608         int currentLine = 0;
 609         for (i = 0; currentLine != lineNo && text[i]; i++ )
 610           if (text[i] == '\n')
 611             currentLine++;
 612         // Now get the text
 613         int j;
 614         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 615             buf += text[i];
 616
 617         g_free( text );
 618         return buf;
 619     }
 620     else
 621       return wxEmptyString;
 622   }
 623   else
 624   {
 625     if (lineNo == 0) return GetValue();
 626     return wxEmptyString;
 627   }
 628 }
 629
 630 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 631 {
 632   /* If you implement this, don't forget to update the documentation!
 633    * (file docs/latex/wx/text.tex) */
 634     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 635 }
 636
 637 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 638 {
 639     if ( m_windowStyle & wxTE_MULTILINE )
 640     {
 641         wxString text = GetValue();
 642
 643         // cast to prevent warning. But pos really should've been unsigned.
 644         if( (unsigned long)pos > text.Len()  )
 645             return FALSE;
 646
 647         *x=0;   // First Col
 648         *y=0;   // First Line
 649
 650         const wxChar* stop = text.c_str() + pos;
 651         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 652         {
 653             if (*p == wxT('\n'))
 654             {
 655                 (*y)++;
 656                 *x=0;
 657             }
 658             else
 659                 (*x)++;
 660         }
 661     }
 662     else // single line control
 663     {
 664         if ( pos <= GTK_ENTRY(m_text)->text_length )
 665         {
 666             *y = 0;
 667             *x = pos;
 668         }
 669         else
 670         {
 671             // index out of bounds
 672             return FALSE;
 673         }
 674     }
 675
 676     return TRUE;
 677 }
 678
 679 long wxTextCtrl::XYToPosition(long x, long y ) const
 680 {
 681     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 682
 683     long pos=0;
 684     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 685
 686     pos += x;
 687     return pos;
 688 }
 689
 690 int wxTextCtrl::GetLineLength(long lineNo) const
 691 {
 692     wxString str = GetLineText (lineNo);
 693     return (int) str.Length();
 694 }
 695
 696 int wxTextCtrl::GetNumberOfLines() const
 697 {
 698     if (m_windowStyle & wxTE_MULTILINE)
 699     {
 700         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 701         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 702
 703         if (text)
 704         {
 705             int currentLine = 0;
 706             for (int i = 0; i < len; i++ )
 707             {
 708                 if (text[i] == '\n')
 709                     currentLine++;
 710             }
 711             g_free( text );
 712
 713             // currentLine is 0 based, add 1 to get number of lines
 714             return currentLine + 1;
 715         }
 716         else
 717         {
 718             return 0;
 719         }
 720     }
 721     else
 722     {
 723         return 1;
 724     }
 725 }
 726
 727 void wxTextCtrl::SetInsertionPoint( long pos )
 728 {
 729     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 730
 731     if (m_windowStyle & wxTE_MULTILINE)
 732     {
 733         /* seems to be broken in GTK 1.0.X:
 734            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 735
 736         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 737           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 738
 739         /* we fake a set_point by inserting and deleting. as the user
 740            isn't supposed to get to know about thos non-sense, we
 741            disconnect so that no events are sent to the user program. */
 742
 743         gint tmp = (gint)pos;
 744         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 745         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 746
 747         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 748           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 749
 750         /* bring editable's cursor uptodate. another bug in GTK. */
 751
 752         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 753     }
 754     else
 755     {
 756         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 757
 758         /* bring editable's cursor uptodate. bug in GTK. */
 759
 760         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 761     }
 762 }
 763
 764 void wxTextCtrl::SetInsertionPointEnd()
 765 {
 766     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 767
 768     if (m_windowStyle & wxTE_MULTILINE)
 769         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 770     else
 771         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 772 }
 773
 774 void wxTextCtrl::SetEditable( bool editable )
 775 {
 776     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 777
 778     if (m_windowStyle & wxTE_MULTILINE)
 779         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 780     else
 781         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 782 }
 783
 784 bool wxTextCtrl::Enable( bool enable )
 785 {
 786     if (!wxWindowBase::Enable(enable))
 787     {
 788         // nothing to do
 789         return FALSE;
 790     }
 791
 792     if (m_windowStyle & wxTE_MULTILINE)
 793     {
 794         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 795         OnParentEnable(enable);
 796     }
 797     else
 798     {
 799         gtk_widget_set_sensitive( m_text, enable );
 800     }
 801
 802     return TRUE;
 803 }
 804
 805 // wxGTK-specific: called recursively by Enable,
 806 // to give widgets an oppprtunity to correct their colours after they
 807 // have been changed by Enable
 808 void wxTextCtrl::OnParentEnable( bool enable )
 809 {
 810     // If we have a custom background colour, we use this colour in both
 811     // disabled and enabled mode, or we end up with a different colour under the
 812     // text.
 813     wxColour oldColour = GetBackgroundColour();
 814     if (oldColour.Ok())
 815     {
 816         // Need to set twice or it'll optimize the useful stuff out
 817         if (oldColour == * wxWHITE)
 818             SetBackgroundColour(*wxBLACK);
 819         else
 820             SetBackgroundColour(*wxWHITE);
 821         SetBackgroundColour(oldColour);
 822     }
 823 }
 824
 825 void wxTextCtrl::DiscardEdits()
 826 {
 827     m_modified = FALSE;
 828 }
 829
 830 void wxTextCtrl::SetSelection( long from, long to )
 831 {
 832     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 833
 834     if ( (m_windowStyle & wxTE_MULTILINE) &&
 835          !GTK_TEXT(m_text)->line_start_cache )
 836     {
 837         // tell the programmer that it didn't work
 838         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 839         return;
 840     }
 841
 842     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 843 }
 844
 845 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 846 {
 847 //    SetInsertionPoint( pos );
 848 }
 849
 850 long wxTextCtrl::GetInsertionPoint() const
 851 {
 852     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 853
 854     return (long) GTK_EDITABLE(m_text)->current_pos;
 855 }
 856
 857 long wxTextCtrl::GetLastPosition() const
 858 {
 859     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 860
 861     int pos = 0;
 862     if (m_windowStyle & wxTE_MULTILINE)
 863         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 864     else
 865         pos = GTK_ENTRY(m_text)->text_length;
 866
 867     return (long)pos;
 868 }
 869
 870 void wxTextCtrl::Remove( long from, long to )
 871 {
 872     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 873
 874     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 875 }
 876
 877 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 878 {
 879     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 880
 881     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 882
 883     if (!value.IsEmpty())
 884     {
 885         gint pos = (gint)from;
 886 #if wxUSE_UNICODE
 887         wxWX2MBbuf buf = value.mbc_str();
 888         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 889 #else
 890         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 891 #endif
 892     }
 893 }
 894
 895 void wxTextCtrl::Cut()
 896 {
 897     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 898
 899 #if (GTK_MINOR_VERSION > 0)
 900     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 901 #else
 902     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 903 #endif
 904 }
 905
 906 void wxTextCtrl::Copy()
 907 {
 908     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 909
 910 #if (GTK_MINOR_VERSION > 0)
 911     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 912 #else
 913     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 914 #endif
 915 }
 916
 917 void wxTextCtrl::Paste()
 918 {
 919     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 920
 921 #if (GTK_MINOR_VERSION > 0)
 922     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 923 #else
 924     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 925 #endif
 926 }
 927
 928 // Undo/redo
 929 void wxTextCtrl::Undo()
 930 {
 931     // TODO
 932     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
 933 }
 934
 935 void wxTextCtrl::Redo()
 936 {
 937     // TODO
 938     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
 939 }
 940
 941 bool wxTextCtrl::CanUndo() const
 942 {
 943     // TODO
 944     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
 945     return FALSE;
 946 }
 947
 948 bool wxTextCtrl::CanRedo() const
 949 {
 950     // TODO
 951     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
 952     return FALSE;
 953 }
 954
 955 // If the return values from and to are the same, there is no
 956 // selection.
 957 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
 958 {
 959     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 960
 961     long from, to;
 962     if ( !(GTK_EDITABLE(m_text)->has_selection) )
 963     {
 964         from =
 965         to = GetInsertionPoint();
 966     }
 967     else // got selection
 968     {
 969         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 970         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 971
 972         if ( from > to )
 973         {
 974             // exchange them to be compatible with wxMSW
 975             long tmp = from;
 976             from = to;
 977             to = tmp;
 978         }
 979     }
 980
 981     if ( fromOut )
 982         *fromOut = from;
 983     if ( toOut )
 984         *toOut = to;
 985 }
 986
 987 bool wxTextCtrl::IsEditable() const
 988 {
 989     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 990
 991     return GTK_EDITABLE(m_text)->editable;
 992 }
 993
 994 bool wxTextCtrl::IsModified() const
 995 {
 996     return m_modified;
 997 }
 998
 999 void wxTextCtrl::Clear()
1000 {
1001     SetValue( wxT("") );
1002 }
1003
1004 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1005 {
1006     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1007
1008     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1009     {
1010         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1011         event.SetEventObject(this);
1012         event.SetString(GetValue());
1013         if (GetEventHandler()->ProcessEvent(event)) return;
1014     }
1015
1016     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1017     {
1018         wxWindow *top_frame = m_parent;
1019         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1020             top_frame = top_frame->GetParent();
1021         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1022
1023         if (window->default_widget)
1024         {
1025             gtk_widget_activate (window->default_widget);
1026             return;
1027         }
1028     }
1029
1030     key_event.Skip();
1031 }
1032
1033 GtkWidget* wxTextCtrl::GetConnectWidget()
1034 {
1035     return GTK_WIDGET(m_text);
1036 }
1037
1038 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1039 {
1040     if (m_windowStyle & wxTE_MULTILINE)
1041         return (window == GTK_TEXT(m_text)->text_area);
1042     else
1043         return (window == GTK_ENTRY(m_text)->text_area);
1044 }
1045
1046 // the font will change for subsequent text insertiongs
1047 bool wxTextCtrl::SetFont( const wxFont &font )
1048 {
1049     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1050
1051     if ( !wxWindowBase::SetFont(font) )
1052     {
1053         // font didn't change, nothing to do
1054         return FALSE;
1055     }
1056
1057     if ( m_windowStyle & wxTE_MULTILINE )
1058     {
1059         m_updateFont = TRUE;
1060
1061         ChangeFontGlobally();
1062     }
1063
1064     return TRUE;
1065 }
1066
1067 void wxTextCtrl::ChangeFontGlobally()
1068 {
1069     // this method is very inefficient and hence should be called as rarely as
1070     // possible!
1071     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1072                   _T("shouldn't be called for single line controls") );
1073
1074     wxString value = GetValue();
1075     if ( !value.IsEmpty() )
1076     {
1077         Clear();
1078         AppendText(value);
1079
1080         m_updateFont = FALSE;
1081     }
1082 }
1083
1084 void wxTextCtrl::UpdateFontIfNeeded()
1085 {
1086     if ( m_updateFont )
1087         ChangeFontGlobally();
1088 }
1089
1090 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1091 {
1092     if ( !wxControl::SetForegroundColour(colour) )
1093         return FALSE;
1094
1095     // update default fg colour too
1096     m_defaultStyle.SetTextColour(colour);
1097
1098     return TRUE;
1099 }
1100
1101 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1102 {
1103     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1104
1105     wxControl::SetBackgroundColour( colour );
1106
1107     if (!m_widget->window)
1108         return FALSE;
1109
1110     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1111     if (sysbg.Red() == colour.Red() &&
1112         sysbg.Green() == colour.Green() &&
1113         sysbg.Blue() == colour.Blue())
1114     {
1115         return FALSE; // FIXME or TRUE?
1116     }
1117
1118     if (!m_backgroundColour.Ok())
1119         return FALSE;
1120
1121     if (m_windowStyle & wxTE_MULTILINE)
1122     {
1123         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1124         if (!window)
1125             return FALSE;
1126         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1127         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1128         gdk_window_clear( window );
1129     }
1130
1131     // change active background color too
1132     m_defaultStyle.SetBackgroundColour( colour );
1133
1134     return TRUE;
1135 }
1136
1137 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr &style )
1138 {
1139     /* VERY dirty way to do that - removes the required text and re-adds it
1140        with styling (FIXME) */
1141     if ( m_windowStyle & wxTE_MULTILINE )
1142     {
1143         if ( style.IsDefault() )
1144         {
1145             // nothing to do
1146             return TRUE;
1147         }
1148
1149         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1150
1151         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1152                      _T("invalid range in wxTextCtrl::SetStyle") );
1153
1154         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1155         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1156         wxString tmp(text,*wxConvCurrent);
1157         g_free( text );
1158
1159         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1160         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1161
1162 #if wxUSE_UNICODE
1163         wxWX2MBbuf buf = tmp.mbc_str();
1164         const char *txt = buf;
1165         size_t txtlen = strlen(buf);
1166 #else
1167         const char *txt = tmp;
1168         size_t txtlen = tmp.length();
1169 #endif
1170
1171         GdkFont *font = style.HasFont()
1172                             ? style.GetFont().GetInternalFont()
1173                             : NULL;
1174
1175         GdkColor *colFg = style.HasTextColour()
1176                             ? style.GetTextColour().GetColor()
1177                             : NULL;
1178
1179         GdkColor *colBg = style.HasBackgroundColour()
1180                             ? style.GetBackgroundColour().GetColor()
1181                             : NULL;
1182
1183         gtk_text_insert( GTK_TEXT(m_text), font, colFg, colBg, txt, txtlen );
1184
1185         /* does not seem to help under GTK+ 1.2 !!!
1186         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1187         SetInsertionPoint( old_pos );
1188         return TRUE;
1189     }
1190     else // singe line
1191     {
1192         // cannot do this for GTK+'s Entry widget
1193         return FALSE;
1194     }
1195 }
1196
1197 void wxTextCtrl::ApplyWidgetStyle()
1198 {
1199     if (m_windowStyle & wxTE_MULTILINE)
1200     {
1201         // how ?
1202     }
1203     else
1204     {
1205         SetWidgetStyle();
1206         gtk_widget_set_style( m_text, m_widgetStyle );
1207     }
1208 }
1209
1210 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1211 {
1212     Cut();
1213 }
1214
1215 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1216 {
1217     Copy();
1218 }
1219
1220 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1221 {
1222     Paste();
1223 }
1224
1225 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1226 {
1227     Undo();
1228 }
1229
1230 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1231 {
1232     Redo();
1233 }
1234
1235 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1236 {
1237     event.Enable( CanCut() );
1238 }
1239
1240 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1241 {
1242     event.Enable( CanCopy() );
1243 }
1244
1245 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1246 {
1247     event.Enable( CanPaste() );
1248 }
1249
1250 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1251 {
1252     event.Enable( CanUndo() );
1253 }
1254
1255 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1256 {
1257     event.Enable( CanRedo() );
1258 }
1259
1260 void wxTextCtrl::OnInternalIdle()
1261 {
1262     wxCursor cursor = m_cursor;
1263     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1264
1265     if (cursor.Ok())
1266     {
1267         GdkWindow *window = (GdkWindow*) NULL;
1268         if (HasFlag(wxTE_MULTILINE))
1269             window = GTK_TEXT(m_text)->text_area;
1270         else
1271             window = GTK_ENTRY(m_text)->text_area;
1272
1273         if (window)
1274             gdk_window_set_cursor( window, cursor.GetCursor() );
1275
1276         if (!g_globalCursor.Ok())
1277             cursor = *wxSTANDARD_CURSOR;
1278
1279         window = m_widget->window;
1280         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1281             gdk_window_set_cursor( window, cursor.GetCursor() );
1282     }
1283
1284     UpdateWindowUI();
1285 }
1286
1287 wxSize wxTextCtrl::DoGetBestSize() const
1288 {
1289     // FIXME should be different for multi-line controls...
1290     wxSize ret( wxControl::DoGetBestSize() );
1291     return wxSize(80, ret.y);
1292 }