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/settings.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <ctype.h>
  22
  23 //-----------------------------------------------------------------------------
  24 //  "changed"
  25 //-----------------------------------------------------------------------------
  26
  27 static void gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  28 {
  29   win->SetModified();
  30
  31   wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
  32   wxString val( win->GetValue() );
  33   if (!val.IsNull()) event.m_commandString = WXSTRINGCAST val;
  34   event.SetEventObject( win );
  35   win->GetEventHandler()->ProcessEvent( event );
  36 }
  37
  38 //-----------------------------------------------------------------------------
  39 //  wxTextCtrl
  40 //-----------------------------------------------------------------------------
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  43
  44 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  45   EVT_CHAR(wxTextCtrl::OnChar)
  46 END_EVENT_TABLE()
  47
  48 wxTextCtrl::wxTextCtrl() : streambuf()
  49 {
  50   if (allocate()) setp(base(),ebuf());
  51
  52   m_modified = FALSE;
  53 }
  54
  55 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  56       const wxPoint &pos, const wxSize &size,
  57       int style, const wxValidator& validator, const wxString &name ) : streambuf()
  58 {
  59   if (allocate()) setp(base(),ebuf());
  60
  61   m_modified = FALSE;
  62   Create( parent, id, value, pos, size, style, validator, name );
  63 }
  64
  65 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
  66       const wxPoint &pos, const wxSize &size,
  67       int style, const wxValidator& validator, const wxString &name )
  68 {
  69   m_needParent = TRUE;
  70
  71   PreCreation( parent, id, pos, size, style, name );
  72
  73   SetValidator( validator );
  74
  75   bool multi_line = (style & wxTE_MULTILINE) != 0;
  76   if ( multi_line )
  77   {
  78     // a multi-line edit control: create a vertical scrollbar by default and
  79     // horizontal if requested
  80     bool bHasHScrollbar = (style & wxHSCROLL) != 0;
  81
  82     // create our control...
  83     m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
  84
  85     // ... and put into the upper left hand corner of the table
  86     m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
  87     gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
  88                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
  89                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
  90                        0, 0);
  91
  92     // put the horizontal scrollbar in the lower left hand corner
  93     if (bHasHScrollbar)
  94     {
  95       GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
  96       gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
  97                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
  98                        GTK_FILL,
  99                        0, 0);
 100       gtk_widget_show(hscrollbar);
 101     }
 102
 103     // finally, put the vertical scrollbar in the upper right corner
 104     GtkWidget *vscrollbar = gtk_vscrollbar_new(GTK_TEXT(m_text)->vadj);
 105     gtk_table_attach(GTK_TABLE(m_widget), vscrollbar, 1, 2, 0, 1,
 106                      GTK_FILL,
 107                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 108                      0, 0);
 109     gtk_widget_show( vscrollbar );
 110   }
 111   else
 112   {
 113     // a single-line text control: no need for scrollbars
 114     m_widget =
 115     m_text = gtk_entry_new();
 116   }
 117
 118   wxSize newSize = size;
 119   if (newSize.x == -1) newSize.x = 80;
 120   if (newSize.y == -1) newSize.y = 26;
 121   SetSize( newSize.x, newSize.y );
 122
 123   m_parent->AddChild( this );
 124
 125   (m_parent->m_insertCallback)( m_parent, this );
 126
 127   PostCreation();
 128
 129   if (multi_line)
 130   {
 131     gtk_widget_realize(m_text);
 132     gtk_widget_show(m_text);
 133   }
 134
 135   // we want to be notified about text changes
 136   gtk_signal_connect(GTK_OBJECT(m_text), "changed",
 137                      GTK_SIGNAL_FUNC(gtk_text_changed_callback),
 138                      (gpointer)this);
 139
 140   if (!value.IsNull())
 141   {
 142     gint tmp = 0;
 143     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 144     SetInsertionPointEnd();
 145   }
 146
 147   if (style & wxTE_PASSWORD)
 148   {
 149     if (!multi_line)
 150       gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 151   }
 152
 153   if (style & wxTE_READONLY)
 154   {
 155     if (!multi_line)
 156       gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 157   }
 158   else
 159   {
 160     if (multi_line)
 161       gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 162   }
 163
 164   Show( TRUE );
 165
 166   SetBackgroundColour( parent->GetBackgroundColour() );
 167   SetForegroundColour( parent->GetForegroundColour() );
 168
 169   return TRUE;
 170 }
 171
 172 wxString wxTextCtrl::GetValue() const
 173 {
 174   wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
 175
 176   wxString tmp;
 177   if (m_windowStyle & wxTE_MULTILINE)
 178   {
 179     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 180     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 181     tmp = text;
 182     g_free( text );
 183   }
 184   else
 185   {
 186     tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 187   }
 188   return tmp;
 189 }
 190
 191 void wxTextCtrl::SetValue( const wxString &value )
 192 {
 193   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 194
 195   wxString tmp = "";
 196   if (!value.IsNull()) tmp = value;
 197   if (m_windowStyle & wxTE_MULTILINE)
 198   {
 199     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 200     gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 201     len = 0;
 202     gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 203   }
 204   else
 205   {
 206     gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 207   }
 208 }
 209
 210 void wxTextCtrl::WriteText( const wxString &text )
 211 {
 212   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 213
 214   if (text.IsNull()) return;
 215
 216   if (m_windowStyle & wxTE_MULTILINE)
 217   {
 218     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 219     gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 220   }
 221   else
 222   {
 223     gtk_entry_append_text( GTK_ENTRY(m_text), text );
 224   }
 225 }
 226
 227 bool wxTextCtrl::LoadFile( const wxString &file )
 228 {
 229   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 230
 231   if (!wxFileExists(file)) return FALSE;
 232
 233   Clear();
 234
 235   FILE *fp = NULL;
 236   struct stat statb;
 237
 238   if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 239       !(fp = fopen ((char*) (const char*) file, "r")))
 240   {
 241       return FALSE;
 242   }
 243   else
 244   {
 245     gint len = statb.st_size;
 246     char *text;
 247     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 248     {
 249       fclose (fp);
 250       return FALSE;
 251     }
 252     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 253         {
 254         }
 255     fclose (fp);
 256
 257     text[len] = 0;
 258
 259     if (m_windowStyle & wxTE_MULTILINE)
 260     {
 261       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, 0, &len );
 262     }
 263     else
 264     {
 265       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 266     }
 267
 268     free (text);
 269     m_modified = FALSE;
 270     return TRUE;
 271   }
 272   return FALSE;
 273 }
 274
 275 bool wxTextCtrl::SaveFile( const wxString &file )
 276 {
 277   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 278
 279   if (file == "") return FALSE;
 280
 281   FILE *fp;
 282
 283   if (!(fp = fopen ((char*) (const char*) file, "w")))
 284     {
 285       return FALSE;
 286     }
 287   else
 288     {
 289       char *text = NULL;
 290       gint len = 0;
 291
 292       if (m_windowStyle & wxTE_MULTILINE)
 293       {
 294         len = gtk_text_get_length( GTK_TEXT(m_text) );
 295         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 296       }
 297       else
 298       {
 299         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 300       }
 301
 302       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 303         {
 304           // Did not write whole file
 305         }
 306
 307       // Make sure newline terminates the file
 308       if (text[len - 1] != '\n')
 309         fputc ('\n', fp);
 310
 311       fclose (fp);
 312
 313       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 314
 315       m_modified = FALSE;
 316       return TRUE;
 317     }
 318
 319   return TRUE;
 320 }
 321
 322 wxString wxTextCtrl::GetLineText( long lineNo ) const
 323 {
 324   if (m_windowStyle & wxTE_MULTILINE)
 325   {
 326     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 327     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 328
 329     if (text)
 330     {
 331         wxString buf("");
 332         long i;
 333         int currentLine = 0;
 334         for (i = 0; currentLine != lineNo && text[i]; i++ )
 335           if (text[i] == '\n')
 336             currentLine++;
 337         // Now get the text
 338         int j;
 339         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 340             buf += text[i];
 341
 342         g_free( text );
 343         return buf;
 344     }
 345     else
 346       return wxEmptyString;
 347   }
 348   else
 349   {
 350     if (lineNo == 0) return GetValue();
 351     return wxEmptyString;
 352   }
 353 }
 354
 355 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 356 {
 357   wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
 358 }
 359
 360 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 361 {
 362   if (!(m_windowStyle & wxTE_MULTILINE))
 363     return 0;
 364   gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 365   char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 366   if(!text)
 367     return 0;
 368   if( pos >= len)
 369     return pos=len-1;
 370
 371   *x=1;   // Col 1
 372   *y=1;   // Line 1
 373   for (int i = 0; i < pos; i++ )
 374     {
 375       if (text[i] == '\n')
 376         {
 377           (*y)++;
 378           *x=1;
 379         }
 380       else
 381         (*x)++;
 382     }
 383   g_free( text );
 384   return 1;
 385 }
 386
 387 long wxTextCtrl::XYToPosition(long x, long y ) const
 388 {
 389   if (!(m_windowStyle & wxTE_MULTILINE))
 390     return 0;
 391   long pos=0;
 392
 393   for(int i=1;i<y;i++)
 394       pos +=GetLineLength(i);
 395   pos +=x-1; // Pos start with 0
 396   return pos;
 397 }
 398
 399 int wxTextCtrl::GetLineLength(long lineNo) const
 400 {
 401     wxString str = GetLineText (lineNo);
 402     return (int) str.Length();
 403 }
 404
 405 int wxTextCtrl::GetNumberOfLines() const
 406 {
 407   if (m_windowStyle & wxTE_MULTILINE)
 408   {
 409     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 410     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 411
 412     if (text)
 413     {
 414         int currentLine = 0;
 415         for (int i = 0; i < len; i++ )
 416           if (text[i] == '\n')
 417             currentLine++;
 418
 419         g_free( text );
 420         return currentLine;
 421     }
 422     else
 423       return 0;
 424   }
 425   else
 426   {
 427     return 1;
 428   }
 429 }
 430
 431 void wxTextCtrl::SetInsertionPoint( long pos )
 432 {
 433   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 434
 435   int tmp = (int) pos;
 436   if (m_windowStyle & wxTE_MULTILINE)
 437     gtk_text_set_point( GTK_TEXT(m_text), tmp );
 438   else
 439     gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 440 }
 441
 442 void wxTextCtrl::SetInsertionPointEnd()
 443 {
 444   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 445
 446   int pos = 0;
 447   if (m_windowStyle & wxTE_MULTILINE)
 448     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 449   else
 450     pos = GTK_ENTRY(m_text)->text_length;
 451   SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 452 }
 453
 454 void wxTextCtrl::SetEditable( bool editable )
 455 {
 456   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 457
 458   if (m_windowStyle & wxTE_MULTILINE)
 459     gtk_text_set_editable( GTK_TEXT(m_text), editable );
 460   else
 461     gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 462 }
 463
 464 void wxTextCtrl::SetSelection( long from, long to )
 465 {
 466   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 467
 468   gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 469 }
 470
 471 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 472 {
 473   wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 474 }
 475
 476 long wxTextCtrl::GetInsertionPoint() const
 477 {
 478   wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 479
 480   return (long) GTK_EDITABLE(m_text)->current_pos;
 481 }
 482
 483 long wxTextCtrl::GetLastPosition() const
 484 {
 485   wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 486
 487   int pos = 0;
 488   if (m_windowStyle & wxTE_MULTILINE)
 489     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 490   else
 491     pos = GTK_ENTRY(m_text)->text_length;
 492   return (long)pos-1;
 493 }
 494
 495 void wxTextCtrl::Remove( long from, long to )
 496 {
 497   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 498
 499   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 500 }
 501
 502 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 503 {
 504   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 505
 506   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 507   if (value.IsNull()) return;
 508   gint pos = (gint)to;
 509   gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 510 }
 511
 512 void wxTextCtrl::Cut()
 513 {
 514   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 515
 516 #if (GTK_MINOR_VERSION == 1)
 517   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 518 #else
 519   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 520 #endif
 521 }
 522
 523 void wxTextCtrl::Copy()
 524 {
 525   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 526
 527 #if (GTK_MINOR_VERSION == 1)
 528   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 529 #else
 530   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 531 #endif
 532 }
 533
 534 void wxTextCtrl::Paste()
 535 {
 536   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 537
 538 #if (GTK_MINOR_VERSION == 1)
 539   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 540 #else
 541   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 542 #endif
 543 }
 544
 545 void wxTextCtrl::Clear()
 546 {
 547   SetValue( "" );
 548 }
 549
 550 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 551 {
 552   if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 553   {
 554     wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 555     event.SetEventObject(this);
 556     if (GetEventHandler()->ProcessEvent(event)) return;
 557   }
 558   else if (key_event.KeyCode() == WXK_TAB)
 559   {
 560     wxNavigationKeyEvent event;
 561     event.SetDirection( key_event.m_shiftDown );
 562     event.SetWindowChange(FALSE);
 563     event.SetEventObject(this);
 564
 565     if (GetEventHandler()->ProcessEvent(event)) return;
 566   }
 567   key_event.Skip();
 568 }
 569
 570 int wxTextCtrl::overflow( int WXUNUSED(c) )
 571 {
 572   int len = pptr() - pbase();
 573   char *txt = new char[len+1];
 574   strncpy(txt, pbase(), len);
 575   txt[len] = '\0';
 576   (*this) << txt;
 577   setp(pbase(), epptr());
 578   delete[] txt;
 579   return EOF;
 580 }
 581
 582 int wxTextCtrl::sync()
 583 {
 584   int len = pptr() - pbase();
 585   char *txt = new char[len+1];
 586   strncpy(txt, pbase(), len);
 587   txt[len] = '\0';
 588   (*this) << txt;
 589   setp(pbase(), epptr());
 590   delete[] txt;
 591   return 0;
 592 }
 593
 594 int wxTextCtrl::underflow()
 595 {
 596   return EOF;
 597 }
 598
 599 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 600 {
 601   WriteText(s);
 602   return *this;
 603 }
 604
 605 wxTextCtrl& wxTextCtrl::operator<<(float f)
 606 {
 607   static char buf[100];
 608   sprintf(buf, "%.2f", f);
 609   WriteText(buf);
 610   return *this;
 611 }
 612
 613 wxTextCtrl& wxTextCtrl::operator<<(double d)
 614 {
 615   static char buf[100];
 616   sprintf(buf, "%.2f", d);
 617   WriteText(buf);
 618   return *this;
 619 }
 620
 621 wxTextCtrl& wxTextCtrl::operator<<(int i)
 622 {
 623   static char buf[100];
 624   sprintf(buf, "%i", i);
 625   WriteText(buf);
 626   return *this;
 627 }
 628
 629 wxTextCtrl& wxTextCtrl::operator<<(long i)
 630 {
 631   static char buf[100];
 632   sprintf(buf, "%ld", i);
 633   WriteText(buf);
 634   return *this;
 635 }
 636
 637 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 638 {
 639   char buf[2];
 640
 641   buf[0] = c;
 642   buf[1] = 0;
 643   WriteText(buf);
 644   return *this;
 645 }
 646
 647 GtkWidget* wxTextCtrl::GetConnectWidget()
 648 {
 649     return GTK_WIDGET(m_text);
 650 }
 651
 652 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 653 {
 654     if (m_windowStyle & wxTE_MULTILINE)
 655         return (window == GTK_TEXT(m_text)->text_area);
 656     else
 657         return (window == GTK_ENTRY(m_text)->text_area);
 658 }
 659
 660 void wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
 661 {
 662     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 663
 664     // doesn't work
 665 }
 666
 667 void wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 668 {
 669     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 670
 671     // doesn't work
 672 }
 673
 674 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 675 {
 676     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 677
 678     wxControl::SetBackgroundColour( colour );
 679
 680     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 681     if (sysbg.Red() == colour.Red() &&
 682         sysbg.Green() == colour.Green() &&
 683         sysbg.Blue() == colour.Blue())
 684     {
 685         return;
 686     }
 687
 688     if (!m_backgroundColour.Ok()) return;
 689
 690     if (m_windowStyle & wxTE_MULTILINE)
 691     {
 692         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 693         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 694         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 695         gdk_window_clear( window );
 696     }
 697 }
 698
 699 void wxTextCtrl::ApplyWidgetStyle()
 700 {
 701     if (m_windowStyle & wxTE_MULTILINE)
 702     {
 703     }
 704     else
 705     {
 706         SetWidgetStyle();
 707         gtk_widget_set_style( m_text, m_widgetStyle );
 708     }
 709 }
 710