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