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     /* we don't set a valid background colour, because the window
 397        manager should use a default one */
 398     m_backgroundColour = wxColour();
 399     SetForegroundColour( parent->GetForegroundColour() );
 400
 401     m_cursor = wxCursor( wxCURSOR_IBEAM );
 402
 403     Show( TRUE );
 404
 405     return TRUE;
 406 }
 407
 408 void wxTextCtrl::CalculateScrollbar()
 409 {
 410     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 411
 412     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 413
 414     if (adj->upper - adj->page_size < 0.8)
 415     {
 416         if (m_vScrollbarVisible)
 417         {
 418             gtk_widget_hide( m_vScrollbar );
 419             m_vScrollbarVisible = FALSE;
 420         }
 421     }
 422     else
 423     {
 424         if (!m_vScrollbarVisible)
 425         {
 426             gtk_widget_show( m_vScrollbar );
 427             m_vScrollbarVisible = TRUE;
 428         }
 429     }
 430 }
 431
 432 wxString wxTextCtrl::GetValue() const
 433 {
 434     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 435
 436     wxString tmp;
 437     if (m_windowStyle & wxTE_MULTILINE)
 438     {
 439         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 440         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 441         tmp = wxString(text,*wxConvCurrent);
 442         g_free( text );
 443     }
 444     else
 445     {
 446         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 447     }
 448     return tmp;
 449 }
 450
 451 void wxTextCtrl::SetValue( const wxString &value )
 452 {
 453     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 454
 455     if (m_windowStyle & wxTE_MULTILINE)
 456     {
 457         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 458         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 459         len = 0;
 460 #if wxUSE_UNICODE
 461         wxWX2MBbuf tmpbuf = value.mbc_str();
 462         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 463 #else
 464         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 465 #endif
 466     }
 467     else
 468     {
 469         gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
 470     }
 471
 472     // GRG, Jun/2000: Changed this after a lot of discussion in
 473     //   the lists. wxWindows 2.2 will have a set of flags to
 474     //   customize this behaviour.
 475     SetInsertionPoint(0);
 476
 477     m_modified = FALSE;
 478 }
 479
 480 void wxTextCtrl::WriteText( const wxString &text )
 481 {
 482     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 483
 484     if (text.IsEmpty()) return;
 485
 486     if (m_windowStyle & wxTE_MULTILINE)
 487     {
 488         /* this moves the cursor pos to behind the inserted text */
 489         gint len = GTK_EDITABLE(m_text)->current_pos;
 490
 491 #if wxUSE_UNICODE
 492         wxWX2MBbuf buf = text.mbc_str();
 493         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 494 #else
 495         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 496 #endif
 497
 498         /* bring editable's cursor uptodate. bug in GTK. */
 499         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 500     }
 501     else
 502     {
 503         /* this moves the cursor pos to behind the inserted text */
 504         gint len = GTK_EDITABLE(m_text)->current_pos;
 505 #if wxUSE_UNICODE
 506         wxWX2MBbuf buf = text.mbc_str();
 507         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 508 #else
 509         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 510 #endif
 511
 512         /* bring editable's cursor uptodate. bug in GTK. */
 513         GTK_EDITABLE(m_text)->current_pos += text.Len();
 514
 515         /* bring entry's cursor uptodate. bug in GTK. */
 516         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 517     }
 518 }
 519
 520 void wxTextCtrl::AppendText( const wxString &text )
 521 {
 522     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 523
 524     if (text.IsEmpty()) return;
 525
 526     if (m_windowStyle & wxTE_MULTILINE)
 527     {
 528         bool hasSpecialAttributes = m_font.Ok() ||
 529                                     m_foregroundColour.Ok();
 530         if ( hasSpecialAttributes )
 531         {
 532              gtk_text_insert( GTK_TEXT(m_text),
 533                               m_font.GetInternalFont(),
 534                               m_foregroundColour.GetColor(),
 535                               m_backgroundColour.Ok() ?
 536                                  m_backgroundColour.GetColor(): NULL,
 537                               text.mbc_str(), text.length());
 538
 539         }
 540         else
 541         {
 542             /* we'll insert at the last position */
 543             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 544 #if wxUSE_UNICODE
 545             wxWX2MBbuf buf = text.mbc_str();
 546             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 547 #else
 548             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 549 #endif
 550         }
 551
 552         /* bring editable's cursor uptodate. bug in GTK. */
 553         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 554     }
 555     else
 556     {
 557         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 558     }
 559 }
 560
 561 wxString wxTextCtrl::GetLineText( long lineNo ) const
 562 {
 563   if (m_windowStyle & wxTE_MULTILINE)
 564   {
 565     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 566     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 567
 568     if (text)
 569     {
 570         wxString buf(wxT(""));
 571         long i;
 572         int currentLine = 0;
 573         for (i = 0; currentLine != lineNo && text[i]; i++ )
 574           if (text[i] == '\n')
 575             currentLine++;
 576         // Now get the text
 577         int j;
 578         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 579             buf += text[i];
 580
 581         g_free( text );
 582         return buf;
 583     }
 584     else
 585       return wxEmptyString;
 586   }
 587   else
 588   {
 589     if (lineNo == 0) return GetValue();
 590     return wxEmptyString;
 591   }
 592 }
 593
 594 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 595 {
 596   /* If you implement this, don't forget to update the documentation!
 597    * (file docs/latex/wx/text.tex) */
 598     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 599 }
 600
 601 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 602 {
 603     if ( m_windowStyle & wxTE_MULTILINE )
 604     {
 605         wxString text = GetValue();
 606
 607         // cast to prevent warning. But pos really should've been unsigned.
 608         if( (unsigned long)pos > text.Len()  )
 609             return FALSE;
 610
 611         *x=0;   // First Col
 612         *y=0;   // First Line
 613
 614         const wxChar* stop = text.c_str() + pos;
 615         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 616         {
 617             if (*p == wxT('\n'))
 618             {
 619                 (*y)++;
 620                 *x=0;
 621             }
 622             else
 623                 (*x)++;
 624         }
 625     }
 626     else // single line control
 627     {
 628         if ( pos <= GTK_ENTRY(m_text)->text_length )
 629         {
 630             *y = 0;
 631             *x = pos;
 632         }
 633         else
 634         {
 635             // index out of bounds
 636             return FALSE;
 637         }
 638     }
 639
 640     return TRUE;
 641 }
 642
 643 long wxTextCtrl::XYToPosition(long x, long y ) const
 644 {
 645     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 646
 647     long pos=0;
 648     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 649
 650     pos += x;
 651     return pos;
 652 }
 653
 654 int wxTextCtrl::GetLineLength(long lineNo) const
 655 {
 656     wxString str = GetLineText (lineNo);
 657     return (int) str.Length();
 658 }
 659
 660 int wxTextCtrl::GetNumberOfLines() const
 661 {
 662     if (m_windowStyle & wxTE_MULTILINE)
 663     {
 664         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 665         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 666
 667         if (text)
 668         {
 669             int currentLine = 0;
 670             for (int i = 0; i < len; i++ )
 671             {
 672                 if (text[i] == '\n')
 673                     currentLine++;
 674             }
 675             g_free( text );
 676
 677             // currentLine is 0 based, add 1 to get number of lines
 678             return currentLine + 1;
 679         }
 680         else
 681         {
 682             return 0;
 683         }
 684     }
 685     else
 686     {
 687         return 1;
 688     }
 689 }
 690
 691 void wxTextCtrl::SetInsertionPoint( long pos )
 692 {
 693     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 694
 695     if (m_windowStyle & wxTE_MULTILINE)
 696     {
 697         /* seems to be broken in GTK 1.0.X:
 698            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 699
 700         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 701           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 702
 703         /* we fake a set_point by inserting and deleting. as the user
 704            isn't supposed to get to know about thos non-sense, we
 705            disconnect so that no events are sent to the user program. */
 706
 707         gint tmp = (gint)pos;
 708         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 709         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 710
 711         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 712           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 713
 714         /* bring editable's cursor uptodate. another bug in GTK. */
 715
 716         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 717     }
 718     else
 719     {
 720         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 721
 722         /* bring editable's cursor uptodate. bug in GTK. */
 723
 724         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 725     }
 726 }
 727
 728 void wxTextCtrl::SetInsertionPointEnd()
 729 {
 730     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 731
 732     if (m_windowStyle & wxTE_MULTILINE)
 733         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 734     else
 735         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 736 }
 737
 738 void wxTextCtrl::SetEditable( bool editable )
 739 {
 740     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 741
 742     if (m_windowStyle & wxTE_MULTILINE)
 743         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 744     else
 745         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 746 }
 747
 748 bool wxTextCtrl::Enable( bool enable )
 749 {
 750     if (!wxWindowBase::Enable(enable))
 751     {
 752         // nothing to do
 753         return FALSE;
 754     }
 755
 756     if (m_windowStyle & wxTE_MULTILINE)
 757     {
 758         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 759         OnParentEnable(enable);
 760     }
 761     else
 762     {
 763         gtk_widget_set_sensitive( m_text, enable );
 764     }
 765
 766     return TRUE;
 767 }
 768
 769 // wxGTK-specific: called recursively by Enable,
 770 // to give widgets an oppprtunity to correct their colours after they
 771 // have been changed by Enable
 772 void wxTextCtrl::OnParentEnable( bool enable )
 773 {
 774     // If we have a custom background colour, we use this colour in both
 775     // disabled and enabled mode, or we end up with a different colour under the
 776     // text.
 777     wxColour oldColour = GetBackgroundColour();
 778     if (oldColour.Ok())
 779     {
 780         // Need to set twice or it'll optimize the useful stuff out
 781         if (oldColour == * wxWHITE)
 782             SetBackgroundColour(*wxBLACK);
 783         else
 784             SetBackgroundColour(*wxWHITE);
 785         SetBackgroundColour(oldColour);
 786     }
 787 }
 788
 789 void wxTextCtrl::DiscardEdits()
 790 {
 791     m_modified = FALSE;
 792 }
 793
 794 void wxTextCtrl::SetSelection( long from, long to )
 795 {
 796     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 797
 798     if ( (m_windowStyle & wxTE_MULTILINE) &&
 799          !GTK_TEXT(m_text)->line_start_cache )
 800     {
 801         // tell the programmer that it didn't work
 802         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 803         return;
 804     }
 805
 806     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 807 }
 808
 809 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 810 {
 811 //    SetInsertionPoint( pos );
 812 }
 813
 814 long wxTextCtrl::GetInsertionPoint() const
 815 {
 816     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 817
 818     return (long) GTK_EDITABLE(m_text)->current_pos;
 819 }
 820
 821 long wxTextCtrl::GetLastPosition() const
 822 {
 823     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 824
 825     int pos = 0;
 826     if (m_windowStyle & wxTE_MULTILINE)
 827         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 828     else
 829         pos = GTK_ENTRY(m_text)->text_length;
 830
 831     return (long)pos;
 832 }
 833
 834 void wxTextCtrl::Remove( long from, long to )
 835 {
 836     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 837
 838     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 839 }
 840
 841 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 842 {
 843     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 844
 845     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 846
 847     if (!value.IsEmpty())
 848     {
 849         gint pos = (gint)from;
 850 #if wxUSE_UNICODE
 851         wxWX2MBbuf buf = value.mbc_str();
 852         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 853 #else
 854         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 855 #endif
 856     }
 857 }
 858
 859 void wxTextCtrl::Cut()
 860 {
 861     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 862
 863 #if (GTK_MINOR_VERSION > 0)
 864     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 865 #else
 866     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 867 #endif
 868 }
 869
 870 void wxTextCtrl::Copy()
 871 {
 872     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 873
 874 #if (GTK_MINOR_VERSION > 0)
 875     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 876 #else
 877     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 878 #endif
 879 }
 880
 881 void wxTextCtrl::Paste()
 882 {
 883     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 884
 885 #if (GTK_MINOR_VERSION > 0)
 886     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 887 #else
 888     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 889 #endif
 890 }
 891
 892 bool wxTextCtrl::CanCopy() const
 893 {
 894     // Can copy if there's a selection
 895     long from, to;
 896     GetSelection(& from, & to);
 897     return (from != to) ;
 898 }
 899
 900 bool wxTextCtrl::CanCut() const
 901 {
 902     // Can cut if there's a selection
 903     long from, to;
 904     GetSelection(& from, & to);
 905     return (from != to) && (IsEditable());
 906 }
 907
 908 bool wxTextCtrl::CanPaste() const
 909 {
 910     return IsEditable() ;
 911 }
 912
 913 // Undo/redo
 914 void wxTextCtrl::Undo()
 915 {
 916     // TODO
 917     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
 918 }
 919
 920 void wxTextCtrl::Redo()
 921 {
 922     // TODO
 923     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
 924 }
 925
 926 bool wxTextCtrl::CanUndo() const
 927 {
 928     // TODO
 929     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
 930     return FALSE;
 931 }
 932
 933 bool wxTextCtrl::CanRedo() const
 934 {
 935     // TODO
 936     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
 937     return FALSE;
 938 }
 939
 940 // If the return values from and to are the same, there is no
 941 // selection.
 942 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
 943 {
 944     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 945
 946     long from, to;
 947     if ( !(GTK_EDITABLE(m_text)->has_selection) )
 948     {
 949         from =
 950         to = GetInsertionPoint();
 951     }
 952     else // got selection
 953     {
 954         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 955         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 956
 957         if ( from > to )
 958         {
 959             // exchange them to be compatible with wxMSW
 960             long tmp = from;
 961             from = to;
 962             to = tmp;
 963         }
 964     }
 965
 966     if ( fromOut )
 967         *fromOut = from;
 968     if ( toOut )
 969         *toOut = to;
 970 }
 971
 972 bool wxTextCtrl::IsEditable() const
 973 {
 974     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 975
 976     return GTK_EDITABLE(m_text)->editable;
 977 }
 978
 979 bool wxTextCtrl::IsModified() const
 980 {
 981     return m_modified;
 982 }
 983
 984 void wxTextCtrl::Clear()
 985 {
 986     SetValue( wxT("") );
 987 }
 988
 989 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 990 {
 991     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 992
 993     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 994     {
 995         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 996         event.SetEventObject(this);
 997         event.SetString(GetValue());
 998         if (GetEventHandler()->ProcessEvent(event)) return;
 999     }
1000
1001     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1002     {
1003         wxWindow *top_frame = m_parent;
1004         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1005             top_frame = top_frame->GetParent();
1006         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1007
1008         if (window->default_widget)
1009         {
1010             gtk_widget_activate (window->default_widget);
1011             return;
1012         }
1013     }
1014
1015     key_event.Skip();
1016 }
1017
1018 GtkWidget* wxTextCtrl::GetConnectWidget()
1019 {
1020     return GTK_WIDGET(m_text);
1021 }
1022
1023 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1024 {
1025     if (m_windowStyle & wxTE_MULTILINE)
1026         return (window == GTK_TEXT(m_text)->text_area);
1027     else
1028         return (window == GTK_ENTRY(m_text)->text_area);
1029 }
1030
1031 // the font will change for subsequent text insertiongs
1032 bool wxTextCtrl::SetFont( const wxFont &font )
1033 {
1034     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1035
1036     if ( !wxWindowBase::SetFont(font) )
1037     {
1038         // font didn't change, nothing to do
1039         return FALSE;
1040     }
1041
1042     if ( m_windowStyle & wxTE_MULTILINE )
1043     {
1044         m_updateFont = TRUE;
1045
1046         ChangeFontGlobally();
1047     }
1048
1049     return TRUE;
1050 }
1051
1052 void wxTextCtrl::ChangeFontGlobally()
1053 {
1054     // this method is very inefficient and hence should be called as rarely as
1055     // possible!
1056     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1057                   _T("shouldn't be called for single line controls") );
1058
1059     wxString value = GetValue();
1060     if ( !value.IsEmpty() )
1061     {
1062         Clear();
1063         AppendText(value);
1064
1065         m_updateFont = FALSE;
1066     }
1067 }
1068
1069 void wxTextCtrl::UpdateFontIfNeeded()
1070 {
1071     if ( m_updateFont )
1072         ChangeFontGlobally();
1073 }
1074
1075 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1076 {
1077     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1078
1079     wxControl::SetBackgroundColour( colour );
1080
1081     if (!m_widget->window)
1082         return FALSE;
1083
1084     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1085     if (sysbg.Red() == colour.Red() &&
1086         sysbg.Green() == colour.Green() &&
1087         sysbg.Blue() == colour.Blue())
1088     {
1089         return FALSE; // FIXME or TRUE?
1090     }
1091
1092     if (!m_backgroundColour.Ok())
1093         return FALSE;
1094
1095     if (m_windowStyle & wxTE_MULTILINE)
1096     {
1097         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1098         if (!window)
1099             return FALSE;
1100         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1101         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1102         gdk_window_clear( window );
1103     }
1104
1105     return TRUE;
1106 }
1107
1108 void wxTextCtrl::ApplyWidgetStyle()
1109 {
1110     if (m_windowStyle & wxTE_MULTILINE)
1111     {
1112         // how ?
1113     }
1114     else
1115     {
1116         SetWidgetStyle();
1117         gtk_widget_set_style( m_text, m_widgetStyle );
1118     }
1119 }
1120
1121 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1122 {
1123     Cut();
1124 }
1125
1126 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1127 {
1128     Copy();
1129 }
1130
1131 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1132 {
1133     Paste();
1134 }
1135
1136 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1137 {
1138     Undo();
1139 }
1140
1141 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1142 {
1143     Redo();
1144 }
1145
1146 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1147 {
1148     event.Enable( CanCut() );
1149 }
1150
1151 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1152 {
1153     event.Enable( CanCopy() );
1154 }
1155
1156 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1157 {
1158     event.Enable( CanPaste() );
1159 }
1160
1161 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1162 {
1163     event.Enable( CanUndo() );
1164 }
1165
1166 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1167 {
1168     event.Enable( CanRedo() );
1169 }
1170
1171 void wxTextCtrl::OnInternalIdle()
1172 {
1173     wxCursor cursor = m_cursor;
1174     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1175
1176     if (cursor.Ok())
1177     {
1178         GdkWindow *window = (GdkWindow*) NULL;
1179         if (HasFlag(wxTE_MULTILINE))
1180             window = GTK_TEXT(m_text)->text_area;
1181         else
1182             window = GTK_ENTRY(m_text)->text_area;
1183
1184         if (window)
1185             gdk_window_set_cursor( window, cursor.GetCursor() );
1186
1187         if (!g_globalCursor.Ok())
1188             cursor = *wxSTANDARD_CURSOR;
1189
1190         window = m_widget->window;
1191         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1192             gdk_window_set_cursor( window, cursor.GetCursor() );
1193     }
1194
1195     UpdateWindowUI();
1196 }
1197
1198 wxSize wxTextCtrl::DoGetBestSize() const
1199 {
1200     // FIXME should be different for multi-line controls...
1201     wxSize ret( wxControl::DoGetBestSize() );
1202     return wxSize(80, ret.y);
1203 }