src/gtk/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "radiobox.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_RADIOBOX
  17
  18 #include "wx/radiobox.h"
  19
  20 #include "wx/dialog.h"
  21 #include "wx/frame.h"
  22 #include "wx/log.h"
  23
  24 #include "wx/gtk/private.h"
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "wx/gtk/win_gtk.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool       g_blockEventsOnDrag;
  41
  42 //-----------------------------------------------------------------------------
  43 // "clicked"
  44 //-----------------------------------------------------------------------------
  45
  46 static void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioBox *rb )
  47 {
  48     if (g_isIdle) wxapp_install_idle_handler();
  49
  50     if (!rb->m_hasVMT) return;
  51     if (g_blockEventsOnDrag) return;
  52
  53     if (!button->active) return;
  54
  55     wxCommandEvent event( wxEVT_COMMAND_RADIOBOX_SELECTED, rb->GetId() );
  56     event.SetInt( rb->GetSelection() );
  57     event.SetString( rb->GetStringSelection() );
  58     event.SetEventObject( rb );
  59     rb->GetEventHandler()->ProcessEvent(event);
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "key_press_event"
  64 //-----------------------------------------------------------------------------
  65
  66 static gint gtk_radiobox_keypress_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxRadioBox *rb )
  67 {
  68     if (g_isIdle)
  69         wxapp_install_idle_handler();
  70
  71     if (!rb->m_hasVMT) return FALSE;
  72     if (g_blockEventsOnDrag) return FALSE;
  73
  74     if ((gdk_event->keyval != GDK_Up) &&
  75         (gdk_event->keyval != GDK_Down) &&
  76         (gdk_event->keyval != GDK_Left) &&
  77         (gdk_event->keyval != GDK_Right))
  78     {
  79         return FALSE;
  80     }
  81
  82     wxNode *node = rb->m_boxes.Find( (wxObject*) widget );
  83     if (!node)
  84     {
  85         return FALSE;
  86     }
  87
  88     gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
  89
  90     if ((gdk_event->keyval == GDK_Up) ||
  91         (gdk_event->keyval == GDK_Left))
  92     {
  93         if (node == rb->m_boxes.First())
  94             node = rb->m_boxes.Last();
  95         else
  96             node = node->Previous();
  97     }
  98     else
  99     {
 100         if (node == rb->m_boxes.Last())
 101             node = rb->m_boxes.First();
 102         else
 103             node = node->Next();
 104     }
 105
 106     GtkWidget *button = (GtkWidget*) node->Data();
 107
 108     gtk_widget_grab_focus( button );
 109
 110     return TRUE;
 111 }
 112
 113 static gint gtk_radiobutton_focus_in( GtkWidget *widget,
 114                                       GdkEvent *WXUNUSED(event),
 115                                       wxRadioBox *win )
 116 {
 117     if ( win->m_lostFocus )
 118     {
 119         // no, we didn't really lose it
 120         win->m_lostFocus = FALSE;
 121     }
 122     else if ( !win->m_hasFocus )
 123     {
 124         win->m_hasFocus = TRUE;
 125
 126         wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 127         event.SetEventObject( win );
 128
 129         // never stop the signal emission, it seems to break the kbd handling
 130         // inside the radiobox
 131         (void)win->GetEventHandler()->ProcessEvent( event );
 132     }
 133
 134     return FALSE;
 135 }
 136
 137 static gint gtk_radiobutton_focus_out( GtkWidget *widget,
 138                                        GdkEvent *WXUNUSED(event),
 139                                        wxRadioBox *win )
 140 {
 141   //    wxASSERT_MSG( win->m_hasFocus, _T("got focus out without any focus in?") );
 142   // Replace with a warning, else we dump core a lot!
 143   //  if (!win->m_hasFocus)
 144   //      wxLogWarning(_T("Radiobox got focus out without any focus in.") );
 145
 146     // we might have lost the focus, but may be not - it may have just gone to
 147     // another button in the same radiobox, so we'll check for it in the next
 148     // idle iteration (leave m_hasFocus == TRUE for now)
 149     win->m_lostFocus = TRUE;
 150
 151     return FALSE;
 152 }
 153
 154 //-----------------------------------------------------------------------------
 155 // wxRadioBox
 156 //-----------------------------------------------------------------------------
 157
 158 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox,wxControl)
 159
 160 void wxRadioBox::Init()
 161 {
 162     m_needParent = TRUE;
 163     m_acceptsFocus = TRUE;
 164
 165     m_hasFocus =
 166     m_lostFocus = FALSE;
 167 }
 168
 169 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id, const wxString& title,
 170                          const wxPoint &pos, const wxSize &size,
 171                          int n, const wxString choices[], int majorDim,
 172                          long style, const wxValidator& validator,
 173                          const wxString &name )
 174 {
 175     if (!PreCreation( parent, pos, size ) ||
 176         !CreateBase( parent, id, pos, size, style, validator, name ))
 177     {
 178         wxFAIL_MSG( wxT("wxRadioBox creation failed") );
 179         return FALSE;
 180     }
 181
 182     m_widget = gtk_frame_new( title.mbc_str() );
 183
 184     // majorDim may be 0 if all trailing parameters were omitted, so don't
 185     // assert here but just use the correct value for it
 186     m_majorDim = majorDim == 0 ? n : majorDim;
 187
 188     GtkRadioButton *m_radio = (GtkRadioButton*) NULL;
 189
 190     wxString label;
 191     GSList *radio_button_group = (GSList *) NULL;
 192     for (int i = 0; i < n; i++)
 193     {
 194         if ( i != 0 )
 195             radio_button_group = gtk_radio_button_group( GTK_RADIO_BUTTON(m_radio) );
 196
 197         label.Empty();
 198         for ( const wxChar *pc = choices[i]; *pc; pc++ )
 199         {
 200             if ( *pc != wxT('&') )
 201                 label += *pc;
 202         }
 203
 204         m_radio = GTK_RADIO_BUTTON( gtk_radio_button_new_with_label( radio_button_group, label.mbc_str() ) );
 205
 206         gtk_signal_connect( GTK_OBJECT(m_radio), "key_press_event",
 207            GTK_SIGNAL_FUNC(gtk_radiobox_keypress_callback), (gpointer)this );
 208
 209         m_boxes.Append( (wxObject*) m_radio );
 210
 211         ConnectWidget( GTK_WIDGET(m_radio) );
 212
 213         if (!i) gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_radio), TRUE );
 214
 215         gtk_signal_connect( GTK_OBJECT(m_radio), "clicked",
 216             GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 217
 218         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_in_event",
 219             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_in), (gpointer)this );
 220
 221         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_out_event",
 222             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_out), (gpointer)this );
 223
 224         gtk_pizza_put( GTK_PIZZA(m_parent->m_wxwindow),
 225                          GTK_WIDGET(m_radio),
 226                          m_x+10, m_y+10+(i*24), 10, 10 );
 227     }
 228
 229     m_parent->DoAddChild( this );
 230
 231     PostCreation();
 232
 233     ApplyWidgetStyle();
 234
 235     SetLabel( title );
 236
 237     SetFont( parent->GetFont() );
 238
 239     wxSize ls = LayoutItems();
 240
 241     GtkRequisition req;
 242     req.width = 2;
 243     req.height = 2;
 244     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request ) (m_widget, &req );
 245     if (req.width > ls.x) ls.x = req.width;
 246
 247     wxSize newSize = size;
 248     if (newSize.x == -1) newSize.x = ls.x;
 249     if (newSize.y == -1) newSize.y = ls.y;
 250     SetSize( newSize.x, newSize.y );
 251
 252     SetBackgroundColour( parent->GetBackgroundColour() );
 253     SetForegroundColour( parent->GetForegroundColour() );
 254
 255     Show( TRUE );
 256
 257     return TRUE;
 258 }
 259
 260 wxRadioBox::~wxRadioBox()
 261 {
 262     wxNode *node = m_boxes.First();
 263     while (node)
 264     {
 265         GtkWidget *button = GTK_WIDGET( node->Data() );
 266         gtk_widget_destroy( button );
 267         node = node->Next();
 268     }
 269 }
 270
 271 void wxRadioBox::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 272 {
 273     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 274
 275     LayoutItems();
 276 }
 277
 278 wxSize wxRadioBox::LayoutItems()
 279 {
 280     int x = 7;
 281     int y = 15;
 282
 283     if ( m_majorDim == 0 )
 284     {
 285         // avoid dividing by 0 below
 286         wxFAIL_MSG( wxT("dimension of radiobox should not be 0!") );
 287
 288         m_majorDim = 1;
 289     }
 290
 291     int num_per_major = (m_boxes.GetCount() - 1) / m_majorDim +1;
 292
 293     wxSize res( 0, 0 );
 294
 295     int num_of_cols = 0;
 296     int num_of_rows = 0;
 297     if (HasFlag(wxRA_SPECIFY_COLS))
 298     {
 299         num_of_cols = m_majorDim;
 300         num_of_rows = num_per_major;
 301     }
 302     else
 303     {
 304         num_of_cols = num_per_major;
 305         num_of_rows = m_majorDim;
 306     }
 307
 308     if ( HasFlag(wxRA_SPECIFY_COLS) ||
 309          (HasFlag(wxRA_SPECIFY_ROWS) && (num_of_cols > 1)) )
 310     {
 311         for (int j = 0; j < num_of_cols; j++)
 312         {
 313             y = 15;
 314
 315             int max_len = 0;
 316             wxNode *node = m_boxes.Nth( j*num_of_rows );
 317             for (int i1 = 0; i1< num_of_rows; i1++)
 318             {
 319                 GtkWidget *button = GTK_WIDGET( node->Data() );
 320
 321                 GtkRequisition req;
 322                 req.width = 2;
 323                 req.height = 2;
 324                 (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(button) )->size_request )
 325                       (button, &req );
 326
 327                 if (req.width > max_len) max_len = req.width;
 328
 329                 gtk_pizza_move( GTK_PIZZA(m_parent->m_wxwindow), button, m_x+x, m_y+y );
 330                 y += req.height;
 331
 332                 node = node->Next();
 333                 if (!node) break;
 334             }
 335
 336             // we don't know the max_len before
 337
 338             node = m_boxes.Nth( j*num_of_rows );
 339             for (int i2 = 0; i2< num_of_rows; i2++)
 340             {
 341                 GtkWidget *button = GTK_WIDGET( node->Data() );
 342
 343                 gtk_pizza_resize( GTK_PIZZA(m_parent->m_wxwindow), button, max_len, 20 );
 344
 345                 node = node->Next();
 346                 if (!node) break;
 347             }
 348
 349             if (y > res.y) res.y = y;
 350
 351             x += max_len + 2;
 352         }
 353
 354         res.x = x+4;
 355         res.y += 4;
 356     }
 357     else
 358     {
 359         int max = 0;
 360
 361         wxNode *node = m_boxes.First();
 362         while (node)
 363         {
 364             GtkWidget *button = GTK_WIDGET( node->Data() );
 365
 366             GtkRequisition req;
 367             req.width = 2;
 368             req.height = 2;
 369             (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(button) )->size_request )
 370                   (button, &req );
 371
 372             if (req.width > max) max = req.width;
 373
 374             node = node->Next();
 375         }
 376
 377         node = m_boxes.First();
 378         while (node)
 379         {
 380             GtkWidget *button = GTK_WIDGET( node->Data() );
 381
 382             gtk_pizza_set_size( GTK_PIZZA(m_parent->m_wxwindow), button, m_x+x, m_y+y, max, 20 );
 383             x += max;
 384
 385             node = node->Next();
 386         }
 387         res.x = x+4;
 388         res.y = 40;
 389     }
 390
 391     return res;
 392 }
 393
 394 bool wxRadioBox::Show( bool show )
 395 {
 396     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobox") );
 397
 398     if (!wxControl::Show(show))
 399     {
 400         // nothing to do
 401         return FALSE;
 402     }
 403
 404     if ((m_windowStyle & wxNO_BORDER) != 0)
 405         gtk_widget_hide( m_widget );
 406
 407     wxNode *node = m_boxes.First();
 408     while (node)
 409     {
 410         GtkWidget *button = GTK_WIDGET( node->Data() );
 411
 412         if (show) gtk_widget_show( button ); else gtk_widget_hide( button );
 413
 414         node = node->Next();
 415     }
 416
 417     return TRUE;
 418 }
 419
 420 int wxRadioBox::FindString( const wxString &s ) const
 421 {
 422     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid radiobox") );
 423
 424     int count = 0;
 425
 426     wxNode *node = m_boxes.First();
 427     while (node)
 428     {
 429         GtkLabel *label = GTK_LABEL( BUTTON_CHILD(node->Data()) );
 430         if (s == label->label)
 431             return count;
 432
 433         count++;
 434
 435         node = node->Next();
 436     }
 437
 438     return -1;
 439 }
 440
 441 void wxRadioBox::SetFocus()
 442 {
 443     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 444
 445     if (m_boxes.GetCount() == 0) return;
 446
 447     wxNode *node = m_boxes.First();
 448     while (node)
 449     {
 450         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 451         if (button->active)
 452         {
 453             gtk_widget_grab_focus( GTK_WIDGET(button) );
 454             return;
 455         }
 456         node = node->Next();
 457     }
 458
 459 }
 460
 461 void wxRadioBox::SetSelection( int n )
 462 {
 463     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 464
 465     wxNode *node = m_boxes.Nth( n );
 466
 467     wxCHECK_RET( node, wxT("radiobox wrong index") );
 468
 469     GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 470
 471     GtkDisableEvents();
 472
 473     gtk_toggle_button_set_active( button, 1 );
 474
 475     GtkEnableEvents();
 476 }
 477
 478 int wxRadioBox::GetSelection(void) const
 479 {
 480     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid radiobox") );
 481
 482     int count = 0;
 483
 484     wxNode *node = m_boxes.First();
 485     while (node)
 486     {
 487         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 488         if (button->active) return count;
 489         count++;
 490         node = node->Next();
 491     }
 492
 493     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 494
 495     return -1;
 496 }
 497
 498 wxString wxRadioBox::GetString( int n ) const
 499 {
 500     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid radiobox") );
 501
 502     wxNode *node = m_boxes.Nth( n );
 503
 504     wxCHECK_MSG( node, wxT(""), wxT("radiobox wrong index") );
 505
 506     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(node->Data()) );
 507
 508     return wxString( label->label );
 509 }
 510
 511 void wxRadioBox::SetLabel( const wxString& label )
 512 {
 513     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 514
 515     wxControl::SetLabel( label );
 516
 517     gtk_frame_set_label( GTK_FRAME(m_widget), wxControl::GetLabel().mbc_str() );
 518 }
 519
 520 void wxRadioBox::SetString( int item, const wxString& label )
 521 {
 522     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 523
 524     wxNode *node = m_boxes.Nth( item );
 525
 526     wxCHECK_RET( node, wxT("radiobox wrong index") );
 527
 528     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(node->Data()) );
 529
 530     gtk_label_set( g_label, label.mbc_str() );
 531 }
 532
 533 bool wxRadioBox::Enable( bool enable )
 534 {
 535     if ( !wxControl::Enable( enable ) )
 536         return FALSE;
 537
 538     wxNode *node = m_boxes.First();
 539     while (node)
 540     {
 541         GtkButton *button = GTK_BUTTON( node->Data() );
 542         GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 543
 544         gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 545         gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 546         node = node->Next();
 547     }
 548
 549     return TRUE;
 550 }
 551
 552 void wxRadioBox::Enable( int item, bool enable )
 553 {
 554     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 555
 556     wxNode *node = m_boxes.Nth( item );
 557
 558     wxCHECK_RET( node, wxT("radiobox wrong index") );
 559
 560     GtkButton *button = GTK_BUTTON( node->Data() );
 561     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 562
 563     gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 564     gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 565 }
 566
 567 void wxRadioBox::Show( int item, bool show )
 568 {
 569     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 570
 571     wxNode *node = m_boxes.Nth( item );
 572
 573     wxCHECK_RET( node, wxT("radiobox wrong index") );
 574
 575     GtkWidget *button = GTK_WIDGET( node->Data() );
 576
 577     if (show)
 578         gtk_widget_show( button );
 579     else
 580         gtk_widget_hide( button );
 581 }
 582
 583 wxString wxRadioBox::GetStringSelection() const
 584 {
 585     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid radiobox") );
 586
 587     wxNode *node = m_boxes.First();
 588     while (node)
 589     {
 590         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 591         if (button->active)
 592         {
 593             GtkLabel *label = GTK_LABEL( BUTTON_CHILD(node->Data()) );
 594
 595             return label->label;
 596         }
 597         node = node->Next();
 598     }
 599
 600     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 601     return wxT("");
 602 }
 603
 604 bool wxRadioBox::SetStringSelection( const wxString &s )
 605 {
 606     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobox") );
 607
 608     int res = FindString( s );
 609     if (res == -1) return FALSE;
 610     SetSelection( res );
 611
 612     return TRUE;
 613 }
 614
 615 int wxRadioBox::GetCount() const
 616 {
 617     return m_boxes.Number();
 618 }
 619
 620 int wxRadioBox::GetNumberOfRowsOrCols() const
 621 {
 622     return 1;
 623 }
 624
 625 void wxRadioBox::SetNumberOfRowsOrCols( int WXUNUSED(n) )
 626 {
 627     wxFAIL_MSG(wxT("wxRadioBox::SetNumberOfRowsOrCols not implemented."));
 628 }
 629
 630 void wxRadioBox::GtkDisableEvents()
 631 {
 632     wxNode *node = m_boxes.First();
 633     while (node)
 634     {
 635         gtk_signal_disconnect_by_func( GTK_OBJECT(node->Data()),
 636            GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 637
 638         node = node->Next();
 639     }
 640 }
 641
 642 void wxRadioBox::GtkEnableEvents()
 643 {
 644     wxNode *node = m_boxes.First();
 645     while (node)
 646     {
 647         gtk_signal_connect( GTK_OBJECT(node->Data()), "clicked",
 648            GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 649
 650         node = node->Next();
 651     }
 652 }
 653
 654 void wxRadioBox::ApplyWidgetStyle()
 655 {
 656     SetWidgetStyle();
 657
 658     gtk_widget_set_style( m_widget, m_widgetStyle );
 659
 660     wxNode *node = m_boxes.First();
 661     while (node)
 662     {
 663         GtkWidget *widget = GTK_WIDGET( node->Data() );
 664         gtk_widget_set_style( widget, m_widgetStyle );
 665
 666         gtk_widget_set_style( BUTTON_CHILD(node->Data()), m_widgetStyle );
 667
 668         node = node->Next();
 669     }
 670 }
 671
 672 #if wxUSE_TOOLTIPS
 673 void wxRadioBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 674 {
 675     wxNode *node = m_boxes.First();
 676     while (node)
 677     {
 678         GtkWidget *widget = GTK_WIDGET( node->Data() );
 679         gtk_tooltips_set_tip( tips, widget, wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 680         node = node->Next();
 681     }
 682 }
 683 #endif // wxUSE_TOOLTIPS
 684
 685 bool wxRadioBox::IsOwnGtkWindow( GdkWindow *window )
 686 {
 687     if (window == m_widget->window) return TRUE;
 688
 689     wxNode *node = m_boxes.First();
 690     while (node)
 691     {
 692         GtkWidget *button = GTK_WIDGET( node->Data() );
 693
 694         if (window == button->window) return TRUE;
 695
 696         node = node->Next();
 697     }
 698
 699     return FALSE;
 700 }
 701
 702 void wxRadioBox::OnInternalIdle()
 703 {
 704     if ( m_lostFocus )
 705     {
 706         m_hasFocus = FALSE;
 707         m_lostFocus = FALSE;
 708
 709         wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
 710         event.SetEventObject( this );
 711
 712         (void)GetEventHandler()->ProcessEvent( event );
 713     }
 714 }
 715
 716 #endif // wxUSE_RADIOBOX
 717