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 // data
  28 //-----------------------------------------------------------------------------
  29
  30 extern bool          g_blockEventsOnDrag;
  31 extern wxWindowGTK  *g_delayedFocus;
  32
  33 //-----------------------------------------------------------------------------
  34 // "clicked"
  35 //-----------------------------------------------------------------------------
  36
  37 extern "C" {
  38 static void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioBox *rb )
  39 {
  40     if (g_isIdle) wxapp_install_idle_handler();
  41
  42     if (!rb->m_hasVMT) return;
  43     if (g_blockEventsOnDrag) return;
  44
  45     if (!button->active) return;
  46
  47     wxCommandEvent event( wxEVT_COMMAND_RADIOBOX_SELECTED, rb->GetId() );
  48     event.SetInt( rb->GetSelection() );
  49     event.SetString( rb->GetStringSelection() );
  50     event.SetEventObject( rb );
  51     rb->GetEventHandler()->ProcessEvent(event);
  52 }
  53 }
  54
  55 //-----------------------------------------------------------------------------
  56 // "key_press_event"
  57 //-----------------------------------------------------------------------------
  58
  59 extern "C" {
  60 static gint gtk_radiobox_keypress_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxRadioBox *rb )
  61 {
  62     if (g_isIdle)
  63         wxapp_install_idle_handler();
  64
  65     if (!rb->m_hasVMT) return FALSE;
  66     if (g_blockEventsOnDrag) return FALSE;
  67
  68     if ( ((gdk_event->keyval == GDK_Tab) ||
  69           (gdk_event->keyval == GDK_ISO_Left_Tab)) &&
  70          rb->GetParent() && (rb->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
  71     {
  72         wxNavigationKeyEvent new_event;
  73         new_event.SetEventObject( rb->GetParent() );
  74         // GDK reports GDK_ISO_Left_Tab for SHIFT-TAB
  75         new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
  76         // CTRL-TAB changes the (parent) window, i.e. switch notebook page
  77         new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
  78         new_event.SetCurrentFocus( rb );
  79         return rb->GetParent()->GetEventHandler()->ProcessEvent( new_event );
  80     }
  81
  82     if ((gdk_event->keyval != GDK_Up) &&
  83         (gdk_event->keyval != GDK_Down) &&
  84         (gdk_event->keyval != GDK_Left) &&
  85         (gdk_event->keyval != GDK_Right))
  86     {
  87         return FALSE;
  88     }
  89
  90     wxList::compatibility_iterator node = rb->m_boxes.Find( (wxObject*) widget );
  91     if (!node)
  92     {
  93         return FALSE;
  94     }
  95
  96     g_signal_stop_emission_by_name (widget, "key_press_event");
  97
  98     if ((gdk_event->keyval == GDK_Up) ||
  99         (gdk_event->keyval == GDK_Left))
 100     {
 101         if (node == rb->m_boxes.GetFirst())
 102             node = rb->m_boxes.GetLast();
 103         else
 104             node = node->GetPrevious();
 105     }
 106     else
 107     {
 108         if (node == rb->m_boxes.GetLast())
 109             node = rb->m_boxes.GetFirst();
 110         else
 111             node = node->GetNext();
 112     }
 113
 114     GtkWidget *button = (GtkWidget*) node->GetData();
 115
 116     gtk_widget_grab_focus( button );
 117
 118     return TRUE;
 119 }
 120 }
 121
 122 extern "C" {
 123 static gint gtk_radiobutton_focus_in( GtkWidget *widget,
 124                                       GdkEvent *WXUNUSED(event),
 125                                       wxRadioBox *win )
 126 {
 127     if ( win->m_lostFocus )
 128     {
 129         // no, we didn't really lose it
 130         win->m_lostFocus = FALSE;
 131     }
 132     else if ( !win->m_hasFocus )
 133     {
 134         win->m_hasFocus = true;
 135
 136         wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
 137         event.SetEventObject( win );
 138
 139         // never stop the signal emission, it seems to break the kbd handling
 140         // inside the radiobox
 141         (void)win->GetEventHandler()->ProcessEvent( event );
 142     }
 143
 144     return FALSE;
 145 }
 146 }
 147
 148 extern "C" {
 149 static gint gtk_radiobutton_focus_out( GtkWidget *widget,
 150                                        GdkEvent *WXUNUSED(event),
 151                                        wxRadioBox *win )
 152 {
 153   //    wxASSERT_MSG( win->m_hasFocus, _T("got focus out without any focus in?") );
 154   // Replace with a warning, else we dump core a lot!
 155   //  if (!win->m_hasFocus)
 156   //      wxLogWarning(_T("Radiobox got focus out without any focus in.") );
 157
 158     // we might have lost the focus, but may be not - it may have just gone to
 159     // another button in the same radiobox, so we'll check for it in the next
 160     // idle iteration (leave m_hasFocus == true for now)
 161     win->m_lostFocus = true;
 162
 163     return FALSE;
 164 }
 165 }
 166
 167 //-----------------------------------------------------------------------------
 168 // wxRadioBox
 169 //-----------------------------------------------------------------------------
 170
 171 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox,wxControl)
 172
 173 void wxRadioBox::Init()
 174 {
 175     m_needParent = true;
 176     m_acceptsFocus = true;
 177
 178     m_hasFocus =
 179     m_lostFocus = false;
 180 }
 181
 182 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id,
 183                          const wxString& title,
 184                          const wxPoint &pos, const wxSize &size,
 185                          const wxArrayString& choices, int majorDim,
 186                          long style, const wxValidator& validator,
 187                          const wxString &name )
 188 {
 189     wxCArrayString chs(choices);
 190
 191     return Create( parent, id, title, pos, size, chs.GetCount(),
 192                    chs.GetStrings(), majorDim, style, validator, name );
 193 }
 194
 195 bool wxRadioBox::Create( wxWindow *parent, wxWindowID id, const wxString& title,
 196                          const wxPoint &pos, const wxSize &size,
 197                          int n, const wxString choices[], int majorDim,
 198                          long style, const wxValidator& validator,
 199                          const wxString &name )
 200 {
 201     if (!PreCreation( parent, pos, size ) ||
 202         !CreateBase( parent, id, pos, size, style, validator, name ))
 203     {
 204         wxFAIL_MSG( wxT("wxRadioBox creation failed") );
 205         return false;
 206     }
 207
 208     m_widget = GTKCreateFrame(title);
 209     wxControl::SetLabel(title);
 210
 211     // majorDim may be 0 if all trailing parameters were omitted, so don't
 212     // assert here but just use the correct value for it
 213     SetMajorDim(majorDim == 0 ? n : majorDim, style);
 214
 215
 216     unsigned int num_of_cols = GetColumnCount();
 217     unsigned int num_of_rows = GetRowCount();
 218
 219     GtkRadioButton *m_radio = (GtkRadioButton*) NULL;
 220
 221     GtkWidget *table = gtk_table_new( num_of_rows, num_of_cols, FALSE );
 222     gtk_table_set_col_spacings( GTK_TABLE(table), 1 );
 223     gtk_table_set_row_spacings( GTK_TABLE(table), 1 );
 224     gtk_widget_show( table );
 225     gtk_container_add( GTK_CONTAINER(m_widget), table );
 226
 227     wxString label;
 228     GSList *radio_button_group = (GSList *) NULL;
 229     for (unsigned int i = 0; i < (unsigned int)n; i++)
 230     {
 231         if ( i != 0 )
 232             radio_button_group = gtk_radio_button_get_group( GTK_RADIO_BUTTON(m_radio) );
 233
 234         label.Empty();
 235         for ( const wxChar *pc = choices[i]; *pc; pc++ )
 236         {
 237             if ( *pc != wxT('&') )
 238                 label += *pc;
 239         }
 240
 241         m_radio = GTK_RADIO_BUTTON( gtk_radio_button_new_with_label( radio_button_group, wxGTK_CONV( label ) ) );
 242         gtk_widget_show( GTK_WIDGET(m_radio) );
 243
 244         g_signal_connect (m_radio, "key_press_event",
 245                           G_CALLBACK (gtk_radiobox_keypress_callback), this);
 246
 247         m_boxes.Append( (wxObject*) m_radio );
 248
 249         if (HasFlag(wxRA_SPECIFY_COLS))
 250         {
 251             int left = i%num_of_cols;
 252             int right = (i%num_of_cols) + 1;
 253             int top = i/num_of_cols;
 254             int bottom = (i/num_of_cols)+1;
 255             gtk_table_attach( GTK_TABLE(table), GTK_WIDGET(m_radio), left, right, top, bottom,
 256                   GTK_FILL, GTK_FILL, 1, 1 );
 257         }
 258         else
 259         {
 260             int left = i/num_of_rows;
 261             int right = (i/num_of_rows) + 1;
 262             int top = i%num_of_rows;
 263             int bottom = (i%num_of_rows)+1;
 264             gtk_table_attach( GTK_TABLE(table), GTK_WIDGET(m_radio), left, right, top, bottom,
 265                   GTK_FILL, GTK_FILL, 1, 1 );
 266         }
 267
 268         ConnectWidget( GTK_WIDGET(m_radio) );
 269
 270         if (!i)
 271             gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_radio), TRUE );
 272
 273         g_signal_connect (m_radio, "clicked",
 274                           G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 275         g_signal_connect (m_radio, "focus_in_event",
 276                           G_CALLBACK (gtk_radiobutton_focus_in), this);
 277         g_signal_connect (m_radio, "focus_out_event",
 278                           G_CALLBACK (gtk_radiobutton_focus_out), this);
 279     }
 280
 281     m_parent->DoAddChild( this );
 282
 283     PostCreation(size);
 284
 285     return true;
 286 }
 287
 288 wxRadioBox::~wxRadioBox()
 289 {
 290     wxList::compatibility_iterator node = m_boxes.GetFirst();
 291     while (node)
 292     {
 293         GtkWidget *button = GTK_WIDGET( node->GetData() );
 294         gtk_widget_destroy( button );
 295         node = node->GetNext();
 296     }
 297 }
 298
 299 bool wxRadioBox::Show( bool show )
 300 {
 301     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 302
 303     if (!wxControl::Show(show))
 304     {
 305         // nothing to do
 306         return false;
 307     }
 308
 309     if ( HasFlag(wxNO_BORDER) )
 310         gtk_widget_hide( m_widget );
 311
 312     wxList::compatibility_iterator node = m_boxes.GetFirst();
 313     while (node)
 314     {
 315         GtkWidget *button = GTK_WIDGET( node->GetData() );
 316
 317         if (show)
 318             gtk_widget_show( button );
 319         else
 320             gtk_widget_hide( button );
 321
 322         node = node->GetNext();
 323     }
 324
 325     return true;
 326 }
 327
 328 void wxRadioBox::SetFocus()
 329 {
 330     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 331
 332     if (m_boxes.GetCount() == 0) return;
 333
 334     wxList::compatibility_iterator node = m_boxes.GetFirst();
 335     while (node)
 336     {
 337         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 338         if (button->active)
 339         {
 340             gtk_widget_grab_focus( GTK_WIDGET(button) );
 341             return;
 342         }
 343         node = node->GetNext();
 344     }
 345 }
 346
 347 void wxRadioBox::SetSelection( int n )
 348 {
 349     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 350
 351     wxList::compatibility_iterator node = m_boxes.Item( n );
 352
 353     wxCHECK_RET( node, wxT("radiobox wrong index") );
 354
 355     GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 356
 357     GtkDisableEvents();
 358
 359     gtk_toggle_button_set_active( button, 1 );
 360
 361     GtkEnableEvents();
 362 }
 363
 364 int wxRadioBox::GetSelection(void) const
 365 {
 366     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid radiobox") );
 367
 368     int count = 0;
 369
 370     wxList::compatibility_iterator node = m_boxes.GetFirst();
 371     while (node)
 372     {
 373         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 374         if (button->active) return count;
 375         count++;
 376         node = node->GetNext();
 377     }
 378
 379     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 380
 381     return wxNOT_FOUND;
 382 }
 383
 384 wxString wxRadioBox::GetString(unsigned int n) const
 385 {
 386     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid radiobox") );
 387
 388     wxList::compatibility_iterator node = m_boxes.Item( n );
 389
 390     wxCHECK_MSG( node, wxEmptyString, wxT("radiobox wrong index") );
 391
 392     GtkLabel *label = GTK_LABEL(GTK_BIN(node->GetData())->child);
 393
 394     wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 395
 396     return str;
 397 }
 398
 399 void wxRadioBox::SetLabel( const wxString& label )
 400 {
 401     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 402
 403     GTKSetLabelForFrame(GTK_FRAME(m_widget), label);
 404 }
 405
 406 void wxRadioBox::SetString(unsigned int item, const wxString& label)
 407 {
 408     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 409
 410     wxList::compatibility_iterator node = m_boxes.Item( item );
 411
 412     wxCHECK_RET( node, wxT("radiobox wrong index") );
 413
 414     GtkLabel *g_label = GTK_LABEL(GTK_BIN(node->GetData())->child);
 415
 416     gtk_label_set_text( g_label, wxGTK_CONV( label ) );
 417 }
 418
 419 bool wxRadioBox::Enable( bool enable )
 420 {
 421     if ( !wxControl::Enable( enable ) )
 422         return false;
 423
 424     wxList::compatibility_iterator node = m_boxes.GetFirst();
 425     while (node)
 426     {
 427         GtkButton *button = GTK_BUTTON( node->GetData() );
 428         GtkLabel *label = GTK_LABEL(GTK_BIN(button)->child);
 429
 430         gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 431         gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 432         node = node->GetNext();
 433     }
 434
 435     return true;
 436 }
 437
 438 bool wxRadioBox::Enable(unsigned int item, bool enable)
 439 {
 440     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 441
 442     wxList::compatibility_iterator node = m_boxes.Item( item );
 443
 444     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 445
 446     GtkButton *button = GTK_BUTTON( node->GetData() );
 447     GtkLabel *label = GTK_LABEL(GTK_BIN(button)->child);
 448
 449     gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 450     gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 451
 452     return true;
 453 }
 454
 455 bool wxRadioBox::IsItemEnabled(unsigned int item) const
 456 {
 457     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 458
 459     wxList::compatibility_iterator node = m_boxes.Item( item );
 460
 461     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 462
 463     GtkButton *button = GTK_BUTTON( node->GetData() );
 464
 465     // don't use GTK_WIDGET_IS_SENSITIVE() here, we want to return true even if
 466     // the parent radiobox is disabled
 467     return GTK_WIDGET_SENSITIVE(GTK_WIDGET(button));
 468 }
 469
 470 bool wxRadioBox::Show(unsigned int item, bool show)
 471 {
 472     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 473
 474     wxList::compatibility_iterator node = m_boxes.Item( item );
 475
 476     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 477
 478     GtkWidget *button = GTK_WIDGET( node->GetData() );
 479
 480     if (show)
 481         gtk_widget_show( button );
 482     else
 483         gtk_widget_hide( button );
 484
 485     return true;
 486 }
 487
 488 bool wxRadioBox::IsItemShown(unsigned int item) const
 489 {
 490     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 491
 492     wxList::compatibility_iterator node = m_boxes.Item( item );
 493
 494     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 495
 496     GtkButton *button = GTK_BUTTON( node->GetData() );
 497
 498     return GTK_WIDGET_VISIBLE(GTK_WIDGET(button));
 499 }
 500
 501 unsigned int wxRadioBox::GetCount() const
 502 {
 503     return m_boxes.GetCount();
 504 }
 505
 506 void wxRadioBox::GtkDisableEvents()
 507 {
 508     wxList::compatibility_iterator node = m_boxes.GetFirst();
 509     while (node)
 510     {
 511         g_signal_handlers_disconnect_by_func (node->GetData(),
 512                                               (gpointer) gtk_radiobutton_clicked_callback,
 513                                               this);
 514
 515         node = node->GetNext();
 516     }
 517 }
 518
 519 void wxRadioBox::GtkEnableEvents()
 520 {
 521     wxList::compatibility_iterator node = m_boxes.GetFirst();
 522     while (node)
 523     {
 524         g_signal_connect (node->GetData(), "clicked",
 525                           G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 526
 527         node = node->GetNext();
 528     }
 529 }
 530
 531 void wxRadioBox::DoApplyWidgetStyle(GtkRcStyle *style)
 532 {
 533     GTKFrameApplyWidgetStyle(GTK_FRAME(m_widget), style);
 534
 535     wxList::compatibility_iterator node = m_boxes.GetFirst();
 536     while (node)
 537     {
 538         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 539
 540         gtk_widget_modify_style( widget, style );
 541         gtk_widget_modify_style(GTK_BIN(widget)->child, style);
 542
 543         node = node->GetNext();
 544     }
 545 }
 546
 547 bool wxRadioBox::GTKWidgetNeedsMnemonic() const
 548 {
 549     return true;
 550 }
 551
 552 void wxRadioBox::GTKWidgetDoSetMnemonic(GtkWidget* w)
 553 {
 554     GTKFrameSetMnemonicWidget(GTK_FRAME(m_widget), w);
 555 }
 556
 557 #if wxUSE_TOOLTIPS
 558 void wxRadioBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 559 {
 560     wxList::compatibility_iterator node = m_boxes.GetFirst();
 561     while (node)
 562     {
 563         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 564         gtk_tooltips_set_tip( tips, widget, wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 565         node = node->GetNext();
 566     }
 567 }
 568 #endif // wxUSE_TOOLTIPS
 569
 570 bool wxRadioBox::IsOwnGtkWindow( GdkWindow *window )
 571 {
 572     if (window == m_widget->window)
 573         return true;
 574
 575     wxList::compatibility_iterator node = m_boxes.GetFirst();
 576     while (node)
 577     {
 578         GtkWidget *button = GTK_WIDGET( node->GetData() );
 579
 580         if (window == button->window)
 581             return true;
 582
 583         node = node->GetNext();
 584     }
 585
 586     return false;
 587 }
 588
 589 void wxRadioBox::OnInternalIdle()
 590 {
 591     if ( m_lostFocus )
 592     {
 593         m_hasFocus = false;
 594         m_lostFocus = false;
 595
 596         wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
 597         event.SetEventObject( this );
 598
 599         (void)GetEventHandler()->ProcessEvent( event );
 600     }
 601
 602     if (g_delayedFocus == this)
 603     {
 604         if (GTK_WIDGET_REALIZED(m_widget))
 605         {
 606             g_delayedFocus = NULL;
 607             SetFocus();
 608         }
 609     }
 610 }
 611
 612 // static
 613 wxVisualAttributes
 614 wxRadioBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 615 {
 616     wxVisualAttributes attr;
 617     // NB: we need toplevel window so that GTK+ can find the right style
 618     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 619     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 620     gtk_container_add(GTK_CONTAINER(wnd), widget);
 621     attr = GetDefaultAttributesFromGTKWidget(widget);
 622     gtk_widget_destroy(wnd);
 623     return attr;
 624 }
 625
 626 #endif // wxUSE_RADIOBOX