src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "textctrl.h"
  13 #endif
  14
  15 #include "wx/textctrl.h"
  16 #include "wx/utils.h"
  17 #include <wx/intl.h>
  18
  19 //-----------------------------------------------------------------------------
  20 //  "changed"
  21 //-----------------------------------------------------------------------------
  22
  23 static void gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  24 {
  25   win->SetModified();
  26
  27   wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
  28   wxString val( win->GetValue() );
  29   if (!val.IsNull()) event.m_commandString = WXSTRINGCAST val;
  30   event.SetEventObject( win );
  31   win->GetEventHandler()->ProcessEvent( event );
  32 }
  33
  34 //-----------------------------------------------------------------------------
  35 //  wxTextCtrl
  36 //-----------------------------------------------------------------------------
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  39
  40 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  41   EVT_CHAR(wxTextCtrl::OnChar)
  42 END_EVENT_TABLE()
  43
  44 wxTextCtrl::wxTextCtrl() : streambuf()
  45 {
  46   if (allocate()) setp(base(),ebuf());
  47
  48   m_modified = FALSE;
  49 }
  50
  51 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  52       const wxPoint &pos, const wxSize &size,
  53       int style, const wxValidator& validator, const wxString &name ) : streambuf()
  54 {
  55   if (allocate()) setp(base(),ebuf());
  56
  57   m_modified = FALSE;
  58   Create( parent, id, value, pos, size, style, validator, name );
  59 }
  60
  61 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
  62       const wxPoint &pos, const wxSize &size,
  63       int style, const wxValidator& validator, const wxString &name )
  64 {
  65   m_needParent = TRUE;
  66
  67   PreCreation( parent, id, pos, size, style, name );
  68
  69   SetValidator( validator );
  70
  71   bool bMultiLine = (style & wxTE_MULTILINE) != 0;
  72   if ( bMultiLine )
  73   {
  74     // a multi-line edit control: create a vertical scrollbar by default and
  75     // horizontal if requested
  76     bool bHasHScrollbar = (style & wxHSCROLL) != 0;
  77
  78     // create our control...
  79     m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
  80
  81     // ... and put into the upper left hand corner of the table
  82     m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
  83     gtk_table_attach(GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
  84                      GTK_FILL | GTK_EXPAND,
  85                      GTK_FILL | GTK_EXPAND | GTK_SHRINK,
  86                      0, 0);
  87
  88     // put the horizontal scrollbar in the lower left hand corner
  89     if (bHasHScrollbar)
  90     {
  91       GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
  92       gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
  93                        GTK_EXPAND | GTK_FILL,
  94                        GTK_FILL,
  95                        0, 0);
  96       gtk_widget_show(hscrollbar);
  97     }
  98
  99     // finally, put the vertical scrollbar in the upper right corner
 100     GtkWidget *vscrollbar = gtk_vscrollbar_new(GTK_TEXT(m_text)->vadj);
 101     gtk_table_attach(GTK_TABLE(m_widget), vscrollbar, 1, 2, 0, 1,
 102                      GTK_FILL,
 103                      GTK_EXPAND | GTK_FILL | GTK_SHRINK,
 104                      0, 0);
 105     gtk_widget_show( vscrollbar );
 106   }
 107   else
 108   {
 109     // a single-line text control: no need for scrollbars
 110     m_widget =
 111     m_text = gtk_entry_new();
 112   }
 113
 114   wxSize newSize = size;
 115   if (newSize.x == -1) newSize.x = 80;
 116   if (newSize.y == -1) newSize.y = 26;
 117   SetSize( newSize.x, newSize.y );
 118
 119   PostCreation();
 120
 121   if (bMultiLine)
 122   {
 123     gtk_widget_realize(m_text);
 124     gtk_widget_show(m_text);
 125   }
 126
 127   // we want to be notified about text changes
 128   gtk_signal_connect(GTK_OBJECT(m_text), "changed",
 129                      GTK_SIGNAL_FUNC(gtk_text_changed_callback),
 130                      (gpointer)this);
 131
 132   if (!value.IsNull())
 133   {
 134     gint tmp = 0;
 135     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 136   }
 137
 138   if (style & wxTE_READONLY)
 139   {
 140   }
 141   else
 142   {
 143     if (bMultiLine)
 144       gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 145   }
 146
 147   Show( TRUE );
 148
 149   return TRUE;
 150 }
 151
 152 wxString wxTextCtrl::GetValue() const
 153 {
 154   wxString tmp;
 155   if (m_windowStyle & wxTE_MULTILINE)
 156   {
 157     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 158     tmp = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 159   }
 160   else
 161   {
 162     tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 163   }
 164   return tmp;
 165 }
 166
 167 void wxTextCtrl::SetValue( const wxString &value )
 168 {
 169   wxString tmp = "";
 170   if (!value.IsNull()) tmp = value;
 171   if (m_windowStyle & wxTE_MULTILINE)
 172   {
 173     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 174     gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 175     len = 0;
 176     gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 177   }
 178   else
 179   {
 180     gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 181   }
 182 }
 183
 184 void wxTextCtrl::WriteText( const wxString &text )
 185 {
 186   if (text.IsNull()) return;
 187
 188   if (m_windowStyle & wxTE_MULTILINE)
 189   {
 190     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 191     gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 192   }
 193   else
 194   {
 195     gtk_entry_append_text( GTK_ENTRY(m_text), text );
 196   }
 197 }
 198
 199 bool wxTextCtrl::LoadFile( const wxString &WXUNUSED(file) )
 200 {
 201   wxFAIL_MSG( "wxTextCtrl::LoadFile not implemented" );
 202
 203   return FALSE;
 204 }
 205
 206 bool wxTextCtrl::SaveFile( const wxString &WXUNUSED(file) )
 207 {
 208   wxFAIL_MSG( "wxTextCtrl::SaveFile not implemented" );
 209
 210   return FALSE;
 211 }
 212
 213 /*
 214 wxString wxTextCtrl::GetLineText( long lineNo ) const
 215 {
 216 }
 217
 218
 219 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &event )
 220 {
 221 }
 222
 223 long wxTextCtrl::PositionToXY( long pos, long *x, long *y ) const
 224 {
 225 }
 226
 227 long wxTextCtrl::XYToPosition( long x, long y )
 228 {
 229 }
 230
 231 int wxTextCtrl::GetNumberOfLines()
 232 {
 233 }
 234
 235 */
 236 void wxTextCtrl::SetInsertionPoint( long pos )
 237 {
 238   int tmp = (int) pos;
 239   if (m_windowStyle & wxTE_MULTILINE)
 240     gtk_text_set_point( GTK_TEXT(m_text), tmp );
 241   else
 242     gtk_entry_set_position( GTK_ENTRY(m_text), tmp );
 243 }
 244
 245 void wxTextCtrl::SetInsertionPointEnd()
 246 {
 247   int pos = 0;
 248   if (m_windowStyle & wxTE_MULTILINE)
 249     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 250   else
 251     pos = GTK_ENTRY(m_text)->text_length;
 252   SetInsertionPoint( pos-1 );
 253 }
 254
 255 void wxTextCtrl::SetEditable( bool editable )
 256 {
 257   if (m_windowStyle & wxTE_MULTILINE)
 258     gtk_text_set_editable( GTK_TEXT(m_text), editable );
 259   else
 260     gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 261 }
 262
 263 void wxTextCtrl::SetSelection( long from, long to )
 264 {
 265   gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 266 }
 267
 268 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 269 {
 270   wxFAIL_MSG(_("wxTextCtrl::ShowPosition not implemented"));
 271 }
 272
 273 long wxTextCtrl::GetInsertionPoint() const
 274 {
 275   return (long) GTK_EDITABLE(m_text)->current_pos;
 276 }
 277
 278 long wxTextCtrl::GetLastPosition() const
 279 {
 280   int pos = 0;
 281   if (m_windowStyle & wxTE_MULTILINE)
 282     pos = gtk_text_get_length( GTK_TEXT(m_text) );
 283   else
 284     pos = GTK_ENTRY(m_text)->text_length;
 285   return (long)pos-1;
 286 }
 287
 288 void wxTextCtrl::Remove( long from, long to )
 289 {
 290   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 291 }
 292
 293 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 294 {
 295   gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 296   if (value.IsNull()) return;
 297   gint pos = (gint)to;
 298   gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 299 }
 300
 301 void wxTextCtrl::Cut()
 302 {
 303 #if (GTK_MINOR_VERSION == 1)
 304   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 305 #else
 306   gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 307 #endif
 308 }
 309
 310 void wxTextCtrl::Copy()
 311 {
 312 #if (GTK_MINOR_VERSION == 1)
 313   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 314 #else
 315   gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 316 #endif
 317 }
 318
 319 void wxTextCtrl::Paste()
 320 {
 321 #if (GTK_MINOR_VERSION == 1)
 322   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 323 #else
 324   gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 325 #endif
 326 }
 327
 328 void wxTextCtrl::Clear()
 329 {
 330   SetValue( "" );
 331 }
 332
 333 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 334 {
 335   if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 336   {
 337     wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 338     event.SetEventObject(this);
 339     if (GetEventHandler()->ProcessEvent(event)) return;
 340   }
 341   else if (key_event.KeyCode() == WXK_TAB)
 342   {
 343     wxNavigationKeyEvent event;
 344     event.SetDirection( key_event.m_shiftDown );
 345     event.SetWindowChange(FALSE);
 346     event.SetEventObject(this);
 347
 348     if (GetEventHandler()->ProcessEvent(event)) return;
 349   }
 350   key_event.Skip();
 351 }
 352
 353 int wxTextCtrl::overflow( int WXUNUSED(c) )
 354 {
 355   int len = pptr() - pbase();
 356   char *txt = new char[len+1];
 357   strncpy(txt, pbase(), len);
 358   txt[len] = '\0';
 359   (*this) << txt;
 360   setp(pbase(), epptr());
 361   delete[] txt;
 362   return EOF;
 363 }
 364
 365 int wxTextCtrl::sync()
 366 {
 367   int len = pptr() - pbase();
 368   char *txt = new char[len+1];
 369   strncpy(txt, pbase(), len);
 370   txt[len] = '\0';
 371   (*this) << txt;
 372   setp(pbase(), epptr());
 373   delete[] txt;
 374   return 0;
 375 }
 376
 377 int wxTextCtrl::underflow()
 378 {
 379   return EOF;
 380 }
 381
 382 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 383 {
 384   WriteText(s);
 385   return *this;
 386 }
 387
 388 wxTextCtrl& wxTextCtrl::operator<<(float f)
 389 {
 390   static char buf[100];
 391   sprintf(buf, "%.2f", f);
 392   WriteText(buf);
 393   return *this;
 394 }
 395
 396 wxTextCtrl& wxTextCtrl::operator<<(double d)
 397 {
 398   static char buf[100];
 399   sprintf(buf, "%.2f", d);
 400   WriteText(buf);
 401   return *this;
 402 }
 403
 404 wxTextCtrl& wxTextCtrl::operator<<(int i)
 405 {
 406   static char buf[100];
 407   sprintf(buf, "%i", i);
 408   WriteText(buf);
 409   return *this;
 410 }
 411
 412 wxTextCtrl& wxTextCtrl::operator<<(long i)
 413 {
 414   static char buf[100];
 415   sprintf(buf, "%ld", i);
 416   WriteText(buf);
 417   return *this;
 418 }
 419
 420 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 421 {
 422   char buf[2];
 423
 424   buf[0] = c;
 425   buf[1] = 0;
 426   WriteText(buf);
 427   return *this;
 428 }
 429
 430 GtkWidget* wxTextCtrl::GetConnectWidget()
 431 {
 432   return GTK_WIDGET(m_text);
 433 }
 434
 435 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 436 {
 437   if (m_windowStyle & wxTE_MULTILINE)
 438     return (window == GTK_TEXT(m_text)->text_area);
 439   else
 440     return (window == GTK_ENTRY(m_text)->text_area);
 441 }
 442
 443 void wxTextCtrl::SetFont( const wxFont &font )
 444 {
 445   if (((wxFont*)&font)->Ok())
 446     m_font = font;
 447   else
 448     m_font = *wxSWISS_FONT;
 449
 450   GtkStyle *style = (GtkStyle*) NULL;
 451   if (!m_hasOwnStyle)
 452   {
 453     m_hasOwnStyle = TRUE;
 454     style = gtk_style_copy( gtk_widget_get_style( m_text ) );
 455   }
 456   else
 457   {
 458     style = gtk_widget_get_style( m_text );
 459   }
 460
 461   gdk_font_unref( style->font );
 462   style->font = gdk_font_ref( m_font.GetInternalFont( 1.0 ) );
 463
 464   gtk_widget_set_style( m_text, style );
 465 }
 466
 467 // as our GTK widget is m_text and not m_widget, we have to override
 468 // SetBackgroundColour() to make it work
 469 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 470 {
 471   wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 472
 473   // NB: the GtkEntry and GtkText classes have text_area at the same offset
 474   SetBackgroundColourHelper( colour, GTK_TEXT(m_text)->text_area );
 475 }