src/gtk1/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                      GTK_FILL | GTK_EXPAND,
  88                      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                        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                      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   PostCreation();
 123
 124   if (bMultiLine)
 125   {
 126     gtk_widget_realize(m_text);
 127     gtk_widget_show(m_text);
 128   }
 129
 130   // we want to be notified about text changes
 131   gtk_signal_connect(GTK_OBJECT(m_text), "changed",
 132                      GTK_SIGNAL_FUNC(gtk_text_changed_callback),
 133                      (gpointer)this);
 134
 135   if (!value.IsNull())
 136   {
 137     gint tmp = 0;
 138     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 139   }
 140
 141   if (style & wxTE_READONLY)
 142   {
 143   }
 144   else
 145   {
 146     if (bMultiLine)
 147       gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 148   }
 149
 150   Show( TRUE );
 151
 152   SetBackgroundColour( parent->GetBackgroundColour() );
 153
 154   return TRUE;
 155 }
 156
 157 wxString wxTextCtrl::GetValue() const
 158 {
 159   wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
 160
 161   wxString tmp;
 162   if (m_windowStyle & wxTE_MULTILINE)
 163   {
 164     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 165     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 166     tmp = text;
 167     g_free( text );
 168   }
 169   else
 170   {
 171     tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 172   }
 173   return tmp;
 174 }
 175
 176 void wxTextCtrl::SetValue( const wxString &value )
 177 {
 178   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 179
 180   wxString tmp = "";
 181   if (!value.IsNull()) tmp = value;
 182   if (m_windowStyle & wxTE_MULTILINE)
 183   {
 184     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 185     gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 186     len = 0;
 187     gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 188   }
 189   else
 190   {
 191     gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 192   }
 193 }
 194
 195 void wxTextCtrl::WriteText( const wxString &text )
 196 {
 197   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 198
 199   if (text.IsNull()) return;
 200
 201   if (m_windowStyle & wxTE_MULTILINE)
 202   {
 203     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 204     gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 205   }
 206   else
 207   {
 208     gtk_entry_append_text( GTK_ENTRY(m_text), text );
 209   }
 210 }
 211
 212 bool wxTextCtrl::LoadFile( const wxString &file )
 213 {
 214   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 215
 216   if (!wxFileExists(file)) return FALSE;
 217
 218   Clear();
 219
 220   FILE *fp = NULL;
 221   struct stat statb;
 222
 223   if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 224       !(fp = fopen ((char*) (const char*) file, "r")))
 225   {
 226       return FALSE;
 227   }
 228   else
 229   {
 230     gint len = statb.st_size;
 231     char *text;
 232     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 233     {
 234       fclose (fp);
 235       return FALSE;
 236     }
 237     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 238         {
 239         }
 240     fclose (fp);
 241
 242     text[len] = 0;
 243
 244     if (m_windowStyle & wxTE_MULTILINE)
 245     {
 246       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, 0, &len );
 247     }
 248     else
 249     {
 250       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 251     }
 252
 253     free (text);
 254     m_modified = FALSE;
 255     return TRUE;
 256   }
 257   return FALSE;
 258 }
 259
 260 bool wxTextCtrl::SaveFile( const wxString &file )
 261 {
 262   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 263
 264   if (file == "") return FALSE;
 265
 266   FILE *fp;
 267
 268   if (!(fp = fopen ((char*) (const char*) file, "w")))
 269     {
 270       return FALSE;
 271     }
 272   else
 273     {
 274       char *text = NULL;
 275       gint len = 0;
 276
 277       if (m_windowStyle & wxTE_MULTILINE)
 278       {
 279         len = gtk_text_get_length( GTK_TEXT(m_text) );
 280         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 281       }
 282       else
 283       {
 284         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 285       }
 286
 287       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 288         {
 289           // Did not write whole file
 290         }
 291
 292       // Make sure newline terminates the file
 293       if (text[len - 1] != '\n')
 294         fputc ('\n', fp);
 295
 296       fclose (fp);
 297
 298       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 299
 300       m_modified = FALSE;
 301       return TRUE;
 302     }
 303
 304   return TRUE;
 305 }
 306
 307 wxString wxTextCtrl::GetLineText( long lineNo ) const
 308 {
 309   if (m_windowStyle & wxTE_MULTILINE)
 310   {
 311     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 312     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 313
 314     if (text)
 315     {
 316         wxString buf("");
 317         long i;
 318         int currentLine = 0;
 319         for (i = 0; currentLine != lineNo && text[i]; i++ )
 320           if (text[i] == '\n')
 321             currentLine++;
 322         // Now get the text
 323         int j;
 324         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 325             buf += text[i];
 326
 327         g_free( text );
 328         return buf;
 329     }
 330     else
 331       return wxEmptyString;
 332   }
 333   else
 334   {
 335     if (lineNo == 0) return GetValue();
 336     return wxEmptyString;
 337   }
 338 }
 339
 340 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 341 {
 342   wxFAIL_MSG( "wxTextCtrl::GetLineText( lineNo ) not implemented" );
 343 }
 344
 345 long wxTextCtrl::PositionToXY( long WXUNUSED(pos), long *WXUNUSED(x), long *WXUNUSED(y) ) const
 346 {
 347   wxFAIL_MSG( "wxTextCtrl::XYToPosition not implemented" );
 348
 349   return 0;
 350 }
 351
 352 long wxTextCtrl::XYToPosition( long WXUNUSED(x), long WXUNUSED(y) ) const
 353 {
 354   wxFAIL_MSG( "wxTextCtrl::XYToPosition not implemented" );
 355
 356   return 0;
 357 }
 358
 359 int wxTextCtrl::GetLineLength(long lineNo) const
 360 {
 361     wxString str = GetLineText (lineNo);
 362     return (int) str.Length();
 363 }
 364
 365 int wxTextCtrl::GetNumberOfLines() const
 366 {
 367   if (m_windowStyle & wxTE_MULTILINE)
 368   {
 369     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 370     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 371
 372     if (text)
 373     {
 374         int currentLine = 0;
 375         for (int i = 0; i < len; i++ )
 376           if (text[i] == '\n')
 377             currentLine++;
 378
 379         g_free( text );
 380         return currentLine;
 381     }
 382     else
 383       return 0;
 384   }
 385   else
 386   {
 387     return 1;
 388   }
 389 }
 390
 391 void wxTextCtrl::SetInsertionPoint( long pos )
 392 {
 393   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 394
 395   int tmp = (int) pos;
 396   if (m_windowStyle & wxTE_MULTILINE)
 397     gtk_text_set_point( GTK_TEXT(m_text), tmp );
 398   else
 399     gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 400 }
 401
 402 void wxTextCtrl::SetInsertionPointEnd()
 403 {
 404   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 405
 406   int pos = 0;
 407   if (m_windowStyle & wxTE_MULTILINE)
 408     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 409   else
 410     pos = GTK_ENTRY(m_text)->text_length;
 411   SetInsertionPoint( pos-1 );
 412 }
 413
 414 void wxTextCtrl::SetEditable( bool editable )
 415 {
 416   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 417
 418   if (m_windowStyle & wxTE_MULTILINE)
 419     gtk_text_set_editable( GTK_TEXT(m_text), editable );
 420   else
 421     gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 422 }
 423
 424 void wxTextCtrl::SetSelection( long from, long to )
 425 {
 426   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 427
 428   gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 429 }
 430
 431 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 432 {
 433   wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 434 }
 435
 436 long wxTextCtrl::GetInsertionPoint() const
 437 {
 438   wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 439
 440   return (long) GTK_EDITABLE(m_text)->current_pos;
 441 }
 442
 443 long wxTextCtrl::GetLastPosition() const
 444 {
 445   wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 446
 447   int pos = 0;
 448   if (m_windowStyle & wxTE_MULTILINE)
 449     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 450   else
 451     pos = GTK_ENTRY(m_text)->text_length;
 452   return (long)pos-1;
 453 }
 454
 455 void wxTextCtrl::Remove( long from, long to )
 456 {
 457   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 458
 459   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 460 }
 461
 462 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 463 {
 464   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 465
 466   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 467   if (value.IsNull()) return;
 468   gint pos = (gint)to;
 469   gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 470 }
 471
 472 void wxTextCtrl::Cut()
 473 {
 474   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 475
 476 #if (GTK_MINOR_VERSION == 1)
 477   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 478 #else
 479   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 480 #endif
 481 }
 482
 483 void wxTextCtrl::Copy()
 484 {
 485   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 486
 487 #if (GTK_MINOR_VERSION == 1)
 488   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 489 #else
 490   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 491 #endif
 492 }
 493
 494 void wxTextCtrl::Paste()
 495 {
 496   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 497
 498 #if (GTK_MINOR_VERSION == 1)
 499   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 500 #else
 501   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 502 #endif
 503 }
 504
 505 void wxTextCtrl::Clear()
 506 {
 507   SetValue( "" );
 508 }
 509
 510 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 511 {
 512   if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 513   {
 514     wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 515     event.SetEventObject(this);
 516     if (GetEventHandler()->ProcessEvent(event)) return;
 517   }
 518   else if (key_event.KeyCode() == WXK_TAB)
 519   {
 520     wxNavigationKeyEvent event;
 521     event.SetDirection( key_event.m_shiftDown );
 522     event.SetWindowChange(FALSE);
 523     event.SetEventObject(this);
 524
 525     if (GetEventHandler()->ProcessEvent(event)) return;
 526   }
 527   key_event.Skip();
 528 }
 529
 530 int wxTextCtrl::overflow( int WXUNUSED(c) )
 531 {
 532   int len = pptr() - pbase();
 533   char *txt = new char[len+1];
 534   strncpy(txt, pbase(), len);
 535   txt[len] = '\0';
 536   (*this) << txt;
 537   setp(pbase(), epptr());
 538   delete[] txt;
 539   return EOF;
 540 }
 541
 542 int wxTextCtrl::sync()
 543 {
 544   int len = pptr() - pbase();
 545   char *txt = new char[len+1];
 546   strncpy(txt, pbase(), len);
 547   txt[len] = '\0';
 548   (*this) << txt;
 549   setp(pbase(), epptr());
 550   delete[] txt;
 551   return 0;
 552 }
 553
 554 int wxTextCtrl::underflow()
 555 {
 556   return EOF;
 557 }
 558
 559 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 560 {
 561   WriteText(s);
 562   return *this;
 563 }
 564
 565 wxTextCtrl& wxTextCtrl::operator<<(float f)
 566 {
 567   static char buf[100];
 568   sprintf(buf, "%.2f", f);
 569   WriteText(buf);
 570   return *this;
 571 }
 572
 573 wxTextCtrl& wxTextCtrl::operator<<(double d)
 574 {
 575   static char buf[100];
 576   sprintf(buf, "%.2f", d);
 577   WriteText(buf);
 578   return *this;
 579 }
 580
 581 wxTextCtrl& wxTextCtrl::operator<<(int i)
 582 {
 583   static char buf[100];
 584   sprintf(buf, "%i", i);
 585   WriteText(buf);
 586   return *this;
 587 }
 588
 589 wxTextCtrl& wxTextCtrl::operator<<(long i)
 590 {
 591   static char buf[100];
 592   sprintf(buf, "%ld", i);
 593   WriteText(buf);
 594   return *this;
 595 }
 596
 597 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 598 {
 599   char buf[2];
 600
 601   buf[0] = c;
 602   buf[1] = 0;
 603   WriteText(buf);
 604   return *this;
 605 }
 606
 607 GtkWidget* wxTextCtrl::GetConnectWidget()
 608 {
 609   return GTK_WIDGET(m_text);
 610 }
 611
 612 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 613 {
 614   if (m_windowStyle & wxTE_MULTILINE)
 615     return (window == GTK_TEXT(m_text)->text_area);
 616   else
 617     return (window == GTK_ENTRY(m_text)->text_area);
 618 }
 619
 620 void wxTextCtrl::SetFont( const wxFont &font )
 621 {
 622   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 623
 624   wxControl::SetFont( font );
 625
 626   // doesn't work
 627 }
 628
 629 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 630 {
 631   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 632
 633   wxControl::SetBackgroundColour( colour );
 634
 635   if (!m_backgroundColour.Ok()) return;
 636
 637   if (m_windowStyle & wxTE_MULTILINE)
 638   {
 639     GdkWindow *window = GTK_TEXT(m_text)->text_area;
 640     m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 641     gdk_window_set_background( window, m_backgroundColour.GetColor() );
 642     gdk_window_clear( window );
 643   }
 644   else
 645   {
 646     gtk_widget_set_style( m_text, m_widgetStyle );
 647   }
 648 }
 649