src/gtk/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/radiobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_RADIOBOX
  14
  15 #include "wx/radiobox.h"
  16
  17 #include "wx/dialog.h"
  18 #include "wx/frame.h"
  19 #include "wx/log.h"
  20
  21 #include "wx/gtk/private.h"
  22 #include <gdk/gdkkeysyms.h>
  23
  24 #include "wx/gtk/win_gtk.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // idle system
  28 //-----------------------------------------------------------------------------
  29
  30 extern void wxapp_install_idle_handler();
  31 extern bool g_isIdle;
  32
  33 //-----------------------------------------------------------------------------
  34 // data
  35 //-----------------------------------------------------------------------------
  36
  37 extern bool          g_blockEventsOnDrag;
  38 extern wxWindowGTK  *g_delayedFocus;
  39
  40 //-----------------------------------------------------------------------------
  41 // "clicked"
  42 //-----------------------------------------------------------------------------
  43
  44 extern "C" {
  45 static void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioBox *rb )
  46 {
  47     if (g_isIdle) wxapp_install_idle_handler();
  48
  49     if (!rb->m_hasVMT) return;
  50     if (g_blockEventsOnDrag) return;
  51
  52     if (!button->active) return;
  53
  54     wxCommandEvent event( wxEVT_COMMAND_RADIOBOX_SELECTED, rb->GetId() );
  55     event.SetInt( rb->GetSelection() );
  56     event.SetString( rb->GetStringSelection() );
  57     event.SetEventObject( rb );
  58     rb->GetEventHandler()->ProcessEvent(event);
  59 }
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "key_press_event"
  64 //-----------------------------------------------------------------------------
  65
  66 extern "C" {
  67 static gint gtk_radiobox_keypress_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxRadioBox *rb )
  68 {
  69     if (g_isIdle)
  70         wxapp_install_idle_handler();
  71
  72     if (!rb->m_hasVMT) return FALSE;
  73     if (g_blockEventsOnDrag) return FALSE;
  74
  75     if ((gdk_event->keyval != GDK_Up) &&
  76         (gdk_event->keyval != GDK_Down) &&
  77         (gdk_event->keyval != GDK_Left) &&
  78         (gdk_event->keyval != GDK_Right))
  79     {
  80         return FALSE;
  81     }
  82
  83     wxList::compatibility_iterator node = rb->m_boxes.Find( (wxObject*) widget );
  84     if (!node)
  85     {
  86         return FALSE;
  87     }
  88
  89     gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
  90
  91     if ((gdk_event->keyval == GDK_Up) ||
  92         (gdk_event->keyval == GDK_Left))
  93     {
  94         if (node == rb->m_boxes.GetFirst())
  95             node = rb->m_boxes.GetLast();
  96         else
  97             node = node->GetPrevious();
  98     }
  99     else
 100     {
 101         if (node == rb->m_boxes.GetLast())
 102             node = rb->m_boxes.GetFirst();
 103         else
 104             node = node->GetNext();
 105     }
 106
 107     GtkWidget *button = (GtkWidget*) node->GetData();
 108
 109     gtk_widget_grab_focus( button );
 110
 111     return TRUE;
 112 }
 113 }
 114
 115 extern "C" {
 116 static gint gtk_radiobutton_focus_in( GtkWidget *widget,
 117                                       GdkEvent *WXUNUSED(event),
 118                                       wxRadioBox *win )
 119 {
 120     if ( win->m_lostFocus )
 121     {
 122         // no, we didn't really lose it
 123         win->m_lostFocus = FALSE;
 124     }
 125     else if ( !win->m_hasFocus )
 126     {
 127         win->m_hasFocus = true;
 128
 129         wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 130         event.SetEventObject( win );
 131
 132         // never stop the signal emission, it seems to break the kbd handling
 133         // inside the radiobox
 134         (void)win->GetEventHandler()->ProcessEvent( event );
 135     }
 136
 137     return FALSE;
 138 }
 139 }
 140
 141 extern "C" {
 142 static gint gtk_radiobutton_focus_out( GtkWidget *widget,
 143                                        GdkEvent *WXUNUSED(event),
 144                                        wxRadioBox *win )
 145 {
 146   //    wxASSERT_MSG( win->m_hasFocus, _T("got focus out without any focus in?") );
 147   // Replace with a warning, else we dump core a lot!
 148   //  if (!win->m_hasFocus)
 149   //      wxLogWarning(_T("Radiobox got focus out without any focus in.") );
 150
 151     // we might have lost the focus, but may be not - it may have just gone to
 152     // another button in the same radiobox, so we'll check for it in the next
 153     // idle iteration (leave m_hasFocus == true for now)
 154     win->m_lostFocus = true;
 155
 156     return FALSE;
 157 }
 158 }
 159
 160 //-----------------------------------------------------------------------------
 161 // wxRadioBox
 162 //-----------------------------------------------------------------------------
 163
 164 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox,wxControl)
 165
 166 void wxRadioBox::Init()
 167 {
 168     m_needParent = true;
 169     m_acceptsFocus = true;
 170
 171     m_hasFocus =
 172     m_lostFocus = false;
 173 }
 174
 175 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id,
 176                          const wxString& title,
 177                          const wxPoint &pos, const wxSize &size,
 178                          const wxArrayString& choices, int majorDim,
 179                          long style, const wxValidator& validator,
 180                          const wxString &name )
 181 {
 182     wxCArrayString chs(choices);
 183
 184     return Create( parent, id, title, pos, size, chs.GetCount(),
 185                    chs.GetStrings(), majorDim, style, validator, name );
 186 }
 187
 188 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id, const wxString& title,
 189                          const wxPoint &pos, const wxSize &size,
 190                          int n, const wxString choices[], int majorDim,
 191                          long style, const wxValidator& validator,
 192                          const wxString &name )
 193 {
 194     if (!PreCreation( parent, pos, size ) ||
 195         !CreateBase( parent, id, pos, size, style, validator, name ))
 196     {
 197         wxFAIL_MSG( wxT("wxRadioBox creation failed") );
 198         return false;
 199     }
 200
 201     m_widget = gtk_frame_new(NULL);
 202     SetLabel(title);
 203
 204     // majorDim may be 0 if all trailing parameters were omitted, so don't
 205     // assert here but just use the correct value for it
 206     SetMajorDim(majorDim == 0 ? n : majorDim, style);
 207
 208
 209     int num_of_cols = GetColumnCount();
 210     int num_of_rows = GetRowCount();
 211
 212     GtkRadioButton *m_radio = (GtkRadioButton*) NULL;
 213
 214     GtkWidget *table = gtk_table_new( num_of_rows, num_of_cols, FALSE );
 215     gtk_table_set_col_spacings( GTK_TABLE(table), 1 );
 216     gtk_table_set_row_spacings( GTK_TABLE(table), 1 );
 217     gtk_widget_show( table );
 218     gtk_container_add( GTK_CONTAINER(m_widget), table );
 219
 220     wxString label;
 221     GSList *radio_button_group = (GSList *) NULL;
 222     for (int i = 0; i < n; i++)
 223     {
 224         if ( i != 0 )
 225             radio_button_group = gtk_radio_button_group( GTK_RADIO_BUTTON(m_radio) );
 226
 227         label.Empty();
 228         for ( const wxChar *pc = choices[i]; *pc; pc++ )
 229         {
 230             if ( *pc != wxT('&') )
 231                 label += *pc;
 232         }
 233
 234         m_radio = GTK_RADIO_BUTTON( gtk_radio_button_new_with_label( radio_button_group, wxGTK_CONV( label ) ) );
 235         gtk_widget_show( GTK_WIDGET(m_radio) );
 236
 237         gtk_signal_connect( GTK_OBJECT(m_radio), "key_press_event",
 238            GTK_SIGNAL_FUNC(gtk_radiobox_keypress_callback), (gpointer)this );
 239
 240         m_boxes.Append( (wxObject*) m_radio );
 241
 242         if (HasFlag(wxRA_SPECIFY_COLS))
 243         {
 244             int left = i%num_of_cols;
 245             int right = (i%num_of_cols) + 1;
 246             int top = i/num_of_cols;
 247             int bottom = (i/num_of_cols)+1;
 248             gtk_table_attach( GTK_TABLE(table), GTK_WIDGET(m_radio), left, right, top, bottom,
 249                   GTK_FILL, GTK_FILL, 1, 1 );
 250         }
 251         else
 252         {
 253             int left = i/num_of_rows;
 254             int right = (i/num_of_rows) + 1;
 255             int top = i%num_of_rows;
 256             int bottom = (i%num_of_rows)+1;
 257             gtk_table_attach( GTK_TABLE(table), GTK_WIDGET(m_radio), left, right, top, bottom,
 258                   GTK_FILL, GTK_FILL, 1, 1 );
 259         }
 260
 261         ConnectWidget( GTK_WIDGET(m_radio) );
 262
 263         if (!i) gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_radio), TRUE );
 264
 265         gtk_signal_connect( GTK_OBJECT(m_radio), "clicked",
 266             GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 267
 268         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_in_event",
 269             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_in), (gpointer)this );
 270
 271         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_out_event",
 272             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_out), (gpointer)this );
 273     }
 274
 275     m_parent->DoAddChild( this );
 276
 277     PostCreation(size);
 278
 279     return true;
 280 }
 281
 282 wxRadioBox::~wxRadioBox()
 283 {
 284     wxList::compatibility_iterator node = m_boxes.GetFirst();
 285     while (node)
 286     {
 287         GtkWidget *button = GTK_WIDGET( node->GetData() );
 288         gtk_widget_destroy( button );
 289         node = node->GetNext();
 290     }
 291 }
 292
 293 bool wxRadioBox::Show( bool show )
 294 {
 295     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 296
 297     if (!wxControl::Show(show))
 298     {
 299         // nothing to do
 300         return false;
 301     }
 302
 303     if ( HasFlag(wxNO_BORDER) )
 304         gtk_widget_hide( m_widget );
 305
 306     wxList::compatibility_iterator node = m_boxes.GetFirst();
 307     while (node)
 308     {
 309         GtkWidget *button = GTK_WIDGET( node->GetData() );
 310
 311         if (show)
 312             gtk_widget_show( button );
 313         else
 314             gtk_widget_hide( button );
 315
 316         node = node->GetNext();
 317     }
 318
 319     return true;
 320 }
 321
 322 void wxRadioBox::SetFocus()
 323 {
 324     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 325
 326     if (m_boxes.GetCount() == 0) return;
 327
 328     wxList::compatibility_iterator node = m_boxes.GetFirst();
 329     while (node)
 330     {
 331         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 332         if (button->active)
 333         {
 334             gtk_widget_grab_focus( GTK_WIDGET(button) );
 335             return;
 336         }
 337         node = node->GetNext();
 338     }
 339 }
 340
 341 void wxRadioBox::SetSelection( int n )
 342 {
 343     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 344
 345     wxList::compatibility_iterator node = m_boxes.Item( n );
 346
 347     wxCHECK_RET( node, wxT("radiobox wrong index") );
 348
 349     GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 350
 351     GtkDisableEvents();
 352
 353     gtk_toggle_button_set_active( button, 1 );
 354
 355     GtkEnableEvents();
 356 }
 357
 358 int wxRadioBox::GetSelection(void) const
 359 {
 360     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid radiobox") );
 361
 362     int count = 0;
 363
 364     wxList::compatibility_iterator node = m_boxes.GetFirst();
 365     while (node)
 366     {
 367         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 368         if (button->active) return count;
 369         count++;
 370         node = node->GetNext();
 371     }
 372
 373     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 374
 375     return wxNOT_FOUND;
 376 }
 377
 378 wxString wxRadioBox::GetString( int n ) const
 379 {
 380     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid radiobox") );
 381
 382     wxList::compatibility_iterator node = m_boxes.Item( n );
 383
 384     wxCHECK_MSG( node, wxEmptyString, wxT("radiobox wrong index") );
 385
 386     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(node->GetData()) );
 387
 388 #ifdef __WXGTK20__
 389     wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 390 #else
 391     wxString str( label->label );
 392 #endif
 393
 394     return str;
 395 }
 396
 397 void wxRadioBox::SetLabel( const wxString& label )
 398 {
 399     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 400
 401     GTKSetLabelForFrame(GTK_FRAME(m_widget), label);
 402 }
 403
 404 void wxRadioBox::SetString( int item, const wxString& label )
 405 {
 406     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 407
 408     wxList::compatibility_iterator node = m_boxes.Item( item );
 409
 410     wxCHECK_RET( node, wxT("radiobox wrong index") );
 411
 412     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(node->GetData()) );
 413
 414     gtk_label_set( g_label, wxGTK_CONV( label ) );
 415 }
 416
 417 bool wxRadioBox::Enable( bool enable )
 418 {
 419     if ( !wxControl::Enable( enable ) )
 420         return false;
 421
 422     wxList::compatibility_iterator node = m_boxes.GetFirst();
 423     while (node)
 424     {
 425         GtkButton *button = GTK_BUTTON( node->GetData() );
 426         GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 427
 428         gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 429         gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 430         node = node->GetNext();
 431     }
 432
 433     return true;
 434 }
 435
 436 bool wxRadioBox::Enable( int item, bool enable )
 437 {
 438     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 439
 440     wxList::compatibility_iterator node = m_boxes.Item( item );
 441
 442     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 443
 444     GtkButton *button = GTK_BUTTON( node->GetData() );
 445     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 446
 447     gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 448     gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 449
 450     return true;
 451 }
 452
 453 bool wxRadioBox::IsItemEnabled(int item) const
 454 {
 455     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 456
 457     wxList::compatibility_iterator node = m_boxes.Item( item );
 458
 459     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 460
 461     GtkButton *button = GTK_BUTTON( node->GetData() );
 462
 463     // don't use GTK_WIDGET_IS_SENSITIVE() here, we want to return true even if
 464     // the parent radiobox is disabled
 465     return GTK_WIDGET_SENSITIVE(GTK_WIDGET(button));
 466 }
 467
 468 bool wxRadioBox::Show( int item, bool show )
 469 {
 470     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 471
 472     wxList::compatibility_iterator node = m_boxes.Item( item );
 473
 474     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 475
 476     GtkWidget *button = GTK_WIDGET( node->GetData() );
 477
 478     if (show)
 479         gtk_widget_show( button );
 480     else
 481         gtk_widget_hide( button );
 482
 483     return true;
 484 }
 485
 486 bool wxRadioBox::IsItemShown(int item) const
 487 {
 488     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 489
 490     wxList::compatibility_iterator node = m_boxes.Item( item );
 491
 492     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 493
 494     GtkButton *button = GTK_BUTTON( node->GetData() );
 495
 496     return GTK_WIDGET_VISIBLE(GTK_WIDGET(button));
 497 }
 498
 499 int wxRadioBox::GetCount() const
 500 {
 501     return m_boxes.GetCount();
 502 }
 503
 504 void wxRadioBox::GtkDisableEvents()
 505 {
 506     wxList::compatibility_iterator node = m_boxes.GetFirst();
 507     while (node)
 508     {
 509         gtk_signal_disconnect_by_func( GTK_OBJECT(node->GetData()),
 510            GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 511
 512         node = node->GetNext();
 513     }
 514 }
 515
 516 void wxRadioBox::GtkEnableEvents()
 517 {
 518     wxList::compatibility_iterator node = m_boxes.GetFirst();
 519     while (node)
 520     {
 521         gtk_signal_connect( GTK_OBJECT(node->GetData()), "clicked",
 522            GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 523
 524         node = node->GetNext();
 525     }
 526 }
 527
 528 void wxRadioBox::DoApplyWidgetStyle(GtkRcStyle *style)
 529 {
 530     gtk_widget_modify_style( m_widget, style );
 531
 532 #ifdef __WXGTK20__
 533     gtk_widget_modify_style(GTK_FRAME(m_widget)->label_widget, style);
 534 #endif
 535
 536     wxList::compatibility_iterator node = m_boxes.GetFirst();
 537     while (node)
 538     {
 539         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 540
 541         gtk_widget_modify_style( widget, style );
 542         gtk_widget_modify_style( BUTTON_CHILD(node->GetData()), style );
 543
 544         node = node->GetNext();
 545     }
 546 }
 547
 548 #if wxUSE_TOOLTIPS
 549 void wxRadioBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 550 {
 551     wxList::compatibility_iterator node = m_boxes.GetFirst();
 552     while (node)
 553     {
 554         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 555         gtk_tooltips_set_tip( tips, widget, wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 556         node = node->GetNext();
 557     }
 558 }
 559 #endif // wxUSE_TOOLTIPS
 560
 561 bool wxRadioBox::IsOwnGtkWindow( GdkWindow *window )
 562 {
 563     if (window == m_widget->window)
 564         return true;
 565
 566     wxList::compatibility_iterator node = m_boxes.GetFirst();
 567     while (node)
 568     {
 569         GtkWidget *button = GTK_WIDGET( node->GetData() );
 570
 571         if (window == button->window)
 572             return true;
 573
 574         node = node->GetNext();
 575     }
 576
 577     return false;
 578 }
 579
 580 void wxRadioBox::OnInternalIdle()
 581 {
 582     if ( m_lostFocus )
 583     {
 584         m_hasFocus = false;
 585         m_lostFocus = false;
 586
 587         wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
 588         event.SetEventObject( this );
 589
 590         (void)GetEventHandler()->ProcessEvent( event );
 591     }
 592
 593     if (g_delayedFocus == this)
 594     {
 595         if (GTK_WIDGET_REALIZED(m_widget))
 596         {
 597             g_delayedFocus = NULL;
 598             SetFocus();
 599         }
 600     }
 601 }
 602
 603 // static
 604 wxVisualAttributes
 605 wxRadioBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 606 {
 607     wxVisualAttributes attr;
 608     // NB: we need toplevel window so that GTK+ can find the right style
 609     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 610     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 611     gtk_container_add(GTK_CONTAINER(wnd), widget);
 612     attr = GetDefaultAttributesFromGTKWidget(widget);
 613     gtk_widget_destroy(wnd);
 614     return attr;
 615 }
 616
 617 #endif // wxUSE_RADIOBOX