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 <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include <gdk/gdkkeysyms.h>
  27
  28 #include "wx/gtk/win_gtk.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // idle system
  32 //-----------------------------------------------------------------------------
  33
  34 extern void wxapp_install_idle_handler();
  35 extern bool g_isIdle;
  36
  37 //-----------------------------------------------------------------------------
  38 // data
  39 //-----------------------------------------------------------------------------
  40
  41 extern bool       g_blockEventsOnDrag;
  42
  43 //-----------------------------------------------------------------------------
  44 // "clicked"
  45 //-----------------------------------------------------------------------------
  46
  47 static void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioBox *rb )
  48 {
  49     if (g_isIdle) wxapp_install_idle_handler();
  50
  51     if (!rb->m_hasVMT) return;
  52     if (g_blockEventsOnDrag) return;
  53
  54     if (!button->active) return;
  55
  56     wxCommandEvent event( wxEVT_COMMAND_RADIOBOX_SELECTED, rb->GetId() );
  57     event.SetInt( rb->GetSelection() );
  58     event.SetString( rb->GetStringSelection() );
  59     event.SetEventObject( rb );
  60     rb->GetEventHandler()->ProcessEvent(event);
  61 }
  62
  63 //-----------------------------------------------------------------------------
  64 // "key_press_event"
  65 //-----------------------------------------------------------------------------
  66
  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     wxNode *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.First())
  95             node = rb->m_boxes.Last();
  96         else
  97             node = node->Previous();
  98     }
  99     else
 100     {
 101         if (node == rb->m_boxes.Last())
 102             node = rb->m_boxes.First();
 103         else
 104             node = node->Next();
 105     }
 106
 107     GtkWidget *button = (GtkWidget*) node->Data();
 108
 109     gtk_widget_grab_focus( button );
 110
 111     return TRUE;
 112 }
 113
 114 static gint gtk_radiobutton_focus_in( GtkWidget *widget,
 115                                       GdkEvent *WXUNUSED(event),
 116                                       wxRadioBox *win )
 117 {
 118     if ( win->m_lostFocus )
 119     {
 120         // no, we didn't really lose it
 121         win->m_lostFocus = FALSE;
 122     }
 123     else if ( !win->m_hasFocus )
 124     {
 125         win->m_hasFocus = TRUE;
 126
 127         wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 128         event.SetEventObject( win );
 129
 130         // never stop the signal emission, it seems to break the kbd handling
 131         // inside the radiobox
 132         (void)win->GetEventHandler()->ProcessEvent( event );
 133     }
 134
 135     return FALSE;
 136 }
 137
 138 static gint gtk_radiobutton_focus_out( GtkWidget *widget,
 139                                        GdkEvent *WXUNUSED(event),
 140                                        wxRadioBox *win )
 141 {
 142   //    wxASSERT_MSG( win->m_hasFocus, _T("got focus out without any focus in?") );
 143   // Replace with a warning, else we dump core a lot!
 144   //  if (!win->m_hasFocus)
 145   //      wxLogWarning(_T("Radiobox got focus out without any focus in.") );
 146
 147     // we might have lost the focus, but may be not - it may have just gone to
 148     // another button in the same radiobox, so we'll check for it in the next
 149     // idle iteration (leave m_hasFocus == TRUE for now)
 150     win->m_lostFocus = TRUE;
 151
 152     return FALSE;
 153 }
 154
 155 //-----------------------------------------------------------------------------
 156 // wxRadioBox
 157 //-----------------------------------------------------------------------------
 158
 159 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox,wxControl)
 160
 161 void wxRadioBox::Init()
 162 {
 163     m_needParent = TRUE;
 164     m_acceptsFocus = TRUE;
 165
 166     m_hasFocus =
 167     m_lostFocus = FALSE;
 168 }
 169
 170 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id, const wxString& title,
 171                          const wxPoint &pos, const wxSize &size,
 172                          int n, const wxString choices[], int majorDim,
 173                          long style, const wxValidator& validator,
 174                          const wxString &name )
 175 {
 176     if (!PreCreation( parent, pos, size ) ||
 177         !CreateBase( parent, id, pos, size, style, validator, name ))
 178     {
 179         wxFAIL_MSG( wxT("wxRadioBox creation failed") );
 180         return FALSE;
 181     }
 182
 183     m_widget = gtk_frame_new( title.mbc_str() );
 184
 185     // majorDim may be 0 if all trailing parameters were omitted, so don't
 186     // assert here but just use the correct value for it
 187     m_majorDim = majorDim == 0 ? n : majorDim;
 188
 189     GtkRadioButton *m_radio = (GtkRadioButton*) NULL;
 190
 191     wxString label;
 192     GSList *radio_button_group = (GSList *) NULL;
 193     for (int i = 0; i < n; i++)
 194     {
 195         if ( i != 0 )
 196             radio_button_group = gtk_radio_button_group( GTK_RADIO_BUTTON(m_radio) );
 197
 198         label.Empty();
 199         for ( const wxChar *pc = choices[i]; *pc; pc++ )
 200         {
 201             if ( *pc != wxT('&') )
 202                 label += *pc;
 203         }
 204
 205         m_radio = GTK_RADIO_BUTTON( gtk_radio_button_new_with_label( radio_button_group, label.mbc_str() ) );
 206
 207         gtk_signal_connect( GTK_OBJECT(m_radio), "key_press_event",
 208            GTK_SIGNAL_FUNC(gtk_radiobox_keypress_callback), (gpointer)this );
 209
 210         m_boxes.Append( (wxObject*) m_radio );
 211
 212         ConnectWidget( GTK_WIDGET(m_radio) );
 213
 214         if (!i) gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_radio), TRUE );
 215
 216         gtk_signal_connect( GTK_OBJECT(m_radio), "clicked",
 217             GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 218
 219         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_in_event",
 220             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_in), (gpointer)this );
 221
 222         gtk_signal_connect( GTK_OBJECT(m_radio), "focus_out_event",
 223             GTK_SIGNAL_FUNC(gtk_radiobutton_focus_out), (gpointer)this );
 224
 225         gtk_pizza_put( GTK_PIZZA(m_parent->m_wxwindow),
 226                          GTK_WIDGET(m_radio),
 227                          m_x+10, m_y+10+(i*24), 10, 10 );
 228     }
 229
 230     m_parent->DoAddChild( this );
 231
 232     PostCreation();
 233
 234     ApplyWidgetStyle();
 235
 236     SetLabel( title );
 237
 238     SetFont( parent->GetFont() );
 239
 240     wxSize ls = LayoutItems();
 241
 242     GtkRequisition req;
 243     req.width = 2;
 244     req.height = 2;
 245     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request ) (m_widget, &req );
 246     if (req.width > ls.x) ls.x = req.width;
 247
 248     wxSize newSize = size;
 249     if (newSize.x == -1) newSize.x = ls.x;
 250     if (newSize.y == -1) newSize.y = ls.y;
 251     SetSize( newSize.x, newSize.y );
 252
 253     SetBackgroundColour( parent->GetBackgroundColour() );
 254     SetForegroundColour( parent->GetForegroundColour() );
 255
 256     Show( TRUE );
 257
 258     return TRUE;
 259 }
 260
 261 wxRadioBox::~wxRadioBox()
 262 {
 263     wxNode *node = m_boxes.First();
 264     while (node)
 265     {
 266         GtkWidget *button = GTK_WIDGET( node->Data() );
 267         gtk_widget_destroy( button );
 268         node = node->Next();
 269     }
 270 }
 271
 272 void wxRadioBox::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 273 {
 274     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 275
 276     LayoutItems();
 277 }
 278
 279 wxSize wxRadioBox::LayoutItems()
 280 {
 281     int x = 7;
 282     int y = 15;
 283
 284     if ( m_majorDim == 0 )
 285     {
 286         // avoid dividing by 0 below
 287         wxFAIL_MSG( wxT("dimension of radiobox should not be 0!") );
 288
 289         m_majorDim = 1;
 290     }
 291
 292     int num_per_major = (m_boxes.GetCount() - 1) / m_majorDim +1;
 293
 294     wxSize res( 0, 0 );
 295
 296     int num_of_cols = 0;
 297     int num_of_rows = 0;
 298     if (HasFlag(wxRA_SPECIFY_COLS))
 299     {
 300         num_of_cols = m_majorDim;
 301         num_of_rows = num_per_major;
 302     }
 303     else
 304     {
 305         num_of_cols = num_per_major;
 306         num_of_rows = m_majorDim;
 307     }
 308
 309     if ( HasFlag(wxRA_SPECIFY_COLS) ||
 310          (HasFlag(wxRA_SPECIFY_ROWS) && (num_of_cols > 1)) )
 311     {
 312         for (int j = 0; j < num_of_cols; j++)
 313         {
 314             y = 15;
 315
 316             int max_len = 0;
 317             wxNode *node = m_boxes.Nth( j*num_of_rows );
 318             for (int i1 = 0; i1< num_of_rows; i1++)
 319             {
 320                 GtkWidget *button = GTK_WIDGET( node->Data() );
 321
 322                 GtkRequisition req;
 323                 req.width = 2;
 324                 req.height = 2;
 325                 (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(button) )->size_request )
 326                       (button, &req );
 327
 328                 if (req.width > max_len) max_len = req.width;
 329
 330                 gtk_pizza_move( GTK_PIZZA(m_parent->m_wxwindow), button, m_x+x, m_y+y );
 331                 y += req.height;
 332
 333                 node = node->Next();
 334                 if (!node) break;
 335             }
 336
 337             // we don't know the max_len before
 338
 339             node = m_boxes.Nth( j*num_of_rows );
 340             for (int i2 = 0; i2< num_of_rows; i2++)
 341             {
 342                 GtkWidget *button = GTK_WIDGET( node->Data() );
 343
 344                 gtk_pizza_resize( GTK_PIZZA(m_parent->m_wxwindow), button, max_len, 20 );
 345
 346                 node = node->Next();
 347                 if (!node) break;
 348             }
 349
 350             if (y > res.y) res.y = y;
 351
 352             x += max_len + 2;
 353         }
 354
 355         res.x = x+4;
 356         res.y += 4;
 357     }
 358     else
 359     {
 360         int max = 0;
 361
 362         wxNode *node = m_boxes.First();
 363         while (node)
 364         {
 365             GtkWidget *button = GTK_WIDGET( node->Data() );
 366
 367             GtkRequisition req;
 368             req.width = 2;
 369             req.height = 2;
 370             (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(button) )->size_request )
 371                   (button, &req );
 372
 373             if (req.width > max) max = req.width;
 374
 375             node = node->Next();
 376         }
 377
 378         node = m_boxes.First();
 379         while (node)
 380         {
 381             GtkWidget *button = GTK_WIDGET( node->Data() );
 382
 383             gtk_pizza_set_size( GTK_PIZZA(m_parent->m_wxwindow), button, m_x+x, m_y+y, max, 20 );
 384             x += max;
 385
 386             node = node->Next();
 387         }
 388         res.x = x+4;
 389         res.y = 40;
 390     }
 391
 392     return res;
 393 }
 394
 395 bool wxRadioBox::Show( bool show )
 396 {
 397     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobox") );
 398
 399     if (!wxControl::Show(show))
 400     {
 401         // nothing to do
 402         return FALSE;
 403     }
 404
 405     if ((m_windowStyle & wxNO_BORDER) != 0)
 406         gtk_widget_hide( m_widget );
 407
 408     wxNode *node = m_boxes.First();
 409     while (node)
 410     {
 411         GtkWidget *button = GTK_WIDGET( node->Data() );
 412
 413         if (show) gtk_widget_show( button ); else gtk_widget_hide( button );
 414
 415         node = node->Next();
 416     }
 417
 418     return TRUE;
 419 }
 420
 421 int wxRadioBox::FindString( const wxString &s ) const
 422 {
 423     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid radiobox") );
 424
 425     int count = 0;
 426
 427     wxNode *node = m_boxes.First();
 428     while (node)
 429     {
 430         GtkButton *button = GTK_BUTTON( node->Data() );
 431
 432         GtkLabel *label = GTK_LABEL( button->child );
 433         if (s == label->label) return count;
 434         count++;
 435
 436         node = node->Next();
 437     }
 438
 439     return -1;
 440 }
 441
 442 void wxRadioBox::SetFocus()
 443 {
 444     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 445
 446     if (m_boxes.GetCount() == 0) return;
 447
 448     wxNode *node = m_boxes.First();
 449     while (node)
 450     {
 451         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 452         if (button->active)
 453         {
 454             gtk_widget_grab_focus( GTK_WIDGET(button) );
 455             return;
 456         }
 457         node = node->Next();
 458     }
 459
 460 }
 461
 462 void wxRadioBox::SetSelection( int n )
 463 {
 464     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 465
 466     wxNode *node = m_boxes.Nth( n );
 467
 468     wxCHECK_RET( node, wxT("radiobox wrong index") );
 469
 470     GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 471
 472     GtkDisableEvents();
 473
 474     gtk_toggle_button_set_active( button, 1 );
 475
 476     GtkEnableEvents();
 477 }
 478
 479 int wxRadioBox::GetSelection(void) const
 480 {
 481     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid radiobox") );
 482
 483     int count = 0;
 484
 485     wxNode *node = m_boxes.First();
 486     while (node)
 487     {
 488         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 489         if (button->active) return count;
 490         count++;
 491         node = node->Next();
 492     }
 493
 494     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 495
 496     return -1;
 497 }
 498
 499 wxString wxRadioBox::GetString( int n ) const
 500 {
 501     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid radiobox") );
 502
 503     wxNode *node = m_boxes.Nth( n );
 504
 505     wxCHECK_MSG( node, wxT(""), wxT("radiobox wrong index") );
 506
 507     GtkButton *button = GTK_BUTTON( node->Data() );
 508     GtkLabel *label = GTK_LABEL( button->child );
 509
 510     return wxString( label->label );
 511 }
 512
 513 void wxRadioBox::SetLabel( const wxString& label )
 514 {
 515     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 516
 517     wxControl::SetLabel( label );
 518
 519     gtk_frame_set_label( GTK_FRAME(m_widget), wxControl::GetLabel().mbc_str() );
 520 }
 521
 522 void wxRadioBox::SetString( int item, const wxString& label )
 523 {
 524     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 525
 526     wxNode *node = m_boxes.Nth( item );
 527
 528     wxCHECK_RET( node, wxT("radiobox wrong index") );
 529
 530     GtkButton *button = GTK_BUTTON( node->Data() );
 531     GtkLabel *g_label = GTK_LABEL( button->child );
 532
 533     gtk_label_set( g_label, label.mbc_str() );
 534 }
 535
 536 bool wxRadioBox::Enable( bool enable )
 537 {
 538     if ( !wxControl::Enable( enable ) )
 539         return FALSE;
 540
 541     wxNode *node = m_boxes.First();
 542     while (node)
 543     {
 544         GtkButton *button = GTK_BUTTON( node->Data() );
 545         GtkWidget *label = button->child;
 546         gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 547         gtk_widget_set_sensitive( label, enable );
 548         node = node->Next();
 549     }
 550
 551     return TRUE;
 552 }
 553
 554 void wxRadioBox::Enable( int item, bool enable )
 555 {
 556     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 557
 558     wxNode *node = m_boxes.Nth( item );
 559
 560     wxCHECK_RET( node, wxT("radiobox wrong index") );
 561
 562     GtkButton *button = GTK_BUTTON( node->Data() );
 563     GtkWidget *label = button->child;
 564     gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 565     gtk_widget_set_sensitive( label, enable );
 566 }
 567
 568 void wxRadioBox::Show( int item, bool show )
 569 {
 570     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 571
 572     wxNode *node = m_boxes.Nth( item );
 573
 574     wxCHECK_RET( node, wxT("radiobox wrong index") );
 575
 576     GtkWidget *button = GTK_WIDGET( node->Data() );
 577
 578     if (show)
 579         gtk_widget_show( button );
 580     else
 581         gtk_widget_hide( button );
 582 }
 583
 584 wxString wxRadioBox::GetStringSelection() const
 585 {
 586     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid radiobox") );
 587
 588     wxNode *node = m_boxes.First();
 589     while (node)
 590     {
 591         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->Data() );
 592         if (button->active)
 593         {
 594             GtkLabel *label = GTK_LABEL( GTK_BUTTON(button)->child );
 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         GtkButton *button = GTK_BUTTON( node->Data() );
 667         gtk_widget_set_style( button->child, m_widgetStyle );
 668
 669         node = node->Next();
 670     }
 671 }
 672
 673 #if wxUSE_TOOLTIPS
 674 void wxRadioBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 675 {
 676     wxNode *node = m_boxes.First();
 677     while (node)
 678     {
 679         GtkWidget *widget = GTK_WIDGET( node->Data() );
 680         gtk_tooltips_set_tip( tips, widget, wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 681         node = node->Next();
 682     }
 683 }
 684 #endif // wxUSE_TOOLTIPS
 685
 686 bool wxRadioBox::IsOwnGtkWindow( GdkWindow *window )
 687 {
 688     if (window == m_widget->window) return TRUE;
 689
 690     wxNode *node = m_boxes.First();
 691     while (node)
 692     {
 693         GtkWidget *button = GTK_WIDGET( node->Data() );
 694
 695         if (window == button->window) return TRUE;
 696
 697         node = node->Next();
 698     }
 699
 700     return FALSE;
 701 }
 702
 703 void wxRadioBox::OnInternalIdle()
 704 {
 705     if ( m_lostFocus )
 706     {
 707         m_hasFocus = FALSE;
 708         m_lostFocus = FALSE;
 709
 710         wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
 711         event.SetEventObject( this );
 712
 713         (void)GetEventHandler()->ProcessEvent( event );
 714     }
 715 }
 716
 717 #endif // wxUSE_RADIOBOX
 718