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     g_signal_stop_emission_by_name (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         g_signal_connect (m_radio, "key_press_event",
 238                           G_CALLBACK (gtk_radiobox_keypress_callback), 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         g_signal_connect (m_radio, "clicked",
 266                           G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 267         g_signal_connect (m_radio, "focus_in_event",
 268                           G_CALLBACK (gtk_radiobutton_focus_in), this);
 269         g_signal_connect (m_radio, "focus_out_event",
 270                           G_CALLBACK (gtk_radiobutton_focus_out), this);
 271     }
 272
 273     m_parent->DoAddChild( this );
 274
 275     PostCreation(size);
 276
 277     return true;
 278 }
 279
 280 wxRadioBox::~wxRadioBox()
 281 {
 282     wxList::compatibility_iterator node = m_boxes.GetFirst();
 283     while (node)
 284     {
 285         GtkWidget *button = GTK_WIDGET( node->GetData() );
 286         gtk_widget_destroy( button );
 287         node = node->GetNext();
 288     }
 289 }
 290
 291 bool wxRadioBox::Show( bool show )
 292 {
 293     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 294
 295     if (!wxControl::Show(show))
 296     {
 297         // nothing to do
 298         return false;
 299     }
 300
 301     if ( HasFlag(wxNO_BORDER) )
 302         gtk_widget_hide( m_widget );
 303
 304     wxList::compatibility_iterator node = m_boxes.GetFirst();
 305     while (node)
 306     {
 307         GtkWidget *button = GTK_WIDGET( node->GetData() );
 308
 309         if (show)
 310             gtk_widget_show( button );
 311         else
 312             gtk_widget_hide( button );
 313
 314         node = node->GetNext();
 315     }
 316
 317     return true;
 318 }
 319
 320 void wxRadioBox::SetFocus()
 321 {
 322     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 323
 324     if (m_boxes.GetCount() == 0) return;
 325
 326     wxList::compatibility_iterator node = m_boxes.GetFirst();
 327     while (node)
 328     {
 329         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 330         if (button->active)
 331         {
 332             gtk_widget_grab_focus( GTK_WIDGET(button) );
 333             return;
 334         }
 335         node = node->GetNext();
 336     }
 337 }
 338
 339 void wxRadioBox::SetSelection( int n )
 340 {
 341     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 342
 343     wxList::compatibility_iterator node = m_boxes.Item( n );
 344
 345     wxCHECK_RET( node, wxT("radiobox wrong index") );
 346
 347     GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 348
 349     GtkDisableEvents();
 350
 351     gtk_toggle_button_set_active( button, 1 );
 352
 353     GtkEnableEvents();
 354 }
 355
 356 int wxRadioBox::GetSelection(void) const
 357 {
 358     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid radiobox") );
 359
 360     int count = 0;
 361
 362     wxList::compatibility_iterator node = m_boxes.GetFirst();
 363     while (node)
 364     {
 365         GtkToggleButton *button = GTK_TOGGLE_BUTTON( node->GetData() );
 366         if (button->active) return count;
 367         count++;
 368         node = node->GetNext();
 369     }
 370
 371     wxFAIL_MSG( wxT("wxRadioBox none selected") );
 372
 373     return wxNOT_FOUND;
 374 }
 375
 376 wxString wxRadioBox::GetString( int n ) const
 377 {
 378     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid radiobox") );
 379
 380     wxList::compatibility_iterator node = m_boxes.Item( n );
 381
 382     wxCHECK_MSG( node, wxEmptyString, wxT("radiobox wrong index") );
 383
 384     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(node->GetData()) );
 385
 386     wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 387
 388     return str;
 389 }
 390
 391 void wxRadioBox::SetLabel( const wxString& label )
 392 {
 393     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 394
 395     GTKSetLabelForFrame(GTK_FRAME(m_widget), label);
 396 }
 397
 398 void wxRadioBox::SetString( int item, const wxString& label )
 399 {
 400     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobox") );
 401
 402     wxList::compatibility_iterator node = m_boxes.Item( item );
 403
 404     wxCHECK_RET( node, wxT("radiobox wrong index") );
 405
 406     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(node->GetData()) );
 407
 408     gtk_label_set( g_label, wxGTK_CONV( label ) );
 409 }
 410
 411 bool wxRadioBox::Enable( bool enable )
 412 {
 413     if ( !wxControl::Enable( enable ) )
 414         return false;
 415
 416     wxList::compatibility_iterator node = m_boxes.GetFirst();
 417     while (node)
 418     {
 419         GtkButton *button = GTK_BUTTON( node->GetData() );
 420         GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 421
 422         gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 423         gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 424         node = node->GetNext();
 425     }
 426
 427     return true;
 428 }
 429
 430 bool wxRadioBox::Enable( int item, bool enable )
 431 {
 432     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 433
 434     wxList::compatibility_iterator node = m_boxes.Item( item );
 435
 436     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 437
 438     GtkButton *button = GTK_BUTTON( node->GetData() );
 439     GtkLabel *label = GTK_LABEL( BUTTON_CHILD(button) );
 440
 441     gtk_widget_set_sensitive( GTK_WIDGET(button), enable );
 442     gtk_widget_set_sensitive( GTK_WIDGET(label), enable );
 443
 444     return true;
 445 }
 446
 447 bool wxRadioBox::IsItemEnabled(int item) const
 448 {
 449     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 450
 451     wxList::compatibility_iterator node = m_boxes.Item( item );
 452
 453     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 454
 455     GtkButton *button = GTK_BUTTON( node->GetData() );
 456
 457     // don't use GTK_WIDGET_IS_SENSITIVE() here, we want to return true even if
 458     // the parent radiobox is disabled
 459     return GTK_WIDGET_SENSITIVE(GTK_WIDGET(button));
 460 }
 461
 462 bool wxRadioBox::Show( int item, bool show )
 463 {
 464     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 465
 466     wxList::compatibility_iterator node = m_boxes.Item( item );
 467
 468     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 469
 470     GtkWidget *button = GTK_WIDGET( node->GetData() );
 471
 472     if (show)
 473         gtk_widget_show( button );
 474     else
 475         gtk_widget_hide( button );
 476
 477     return true;
 478 }
 479
 480 bool wxRadioBox::IsItemShown(int item) const
 481 {
 482     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobox") );
 483
 484     wxList::compatibility_iterator node = m_boxes.Item( item );
 485
 486     wxCHECK_MSG( node, false, wxT("radiobox wrong index") );
 487
 488     GtkButton *button = GTK_BUTTON( node->GetData() );
 489
 490     return GTK_WIDGET_VISIBLE(GTK_WIDGET(button));
 491 }
 492
 493 int wxRadioBox::GetCount() const
 494 {
 495     return m_boxes.GetCount();
 496 }
 497
 498 void wxRadioBox::GtkDisableEvents()
 499 {
 500     wxList::compatibility_iterator node = m_boxes.GetFirst();
 501     while (node)
 502     {
 503         g_signal_handlers_disconnect_by_func (node->GetData(),
 504                                               (gpointer) gtk_radiobutton_clicked_callback,
 505                                               this);
 506
 507         node = node->GetNext();
 508     }
 509 }
 510
 511 void wxRadioBox::GtkEnableEvents()
 512 {
 513     wxList::compatibility_iterator node = m_boxes.GetFirst();
 514     while (node)
 515     {
 516         g_signal_connect (node->GetData(), "clicked",
 517                           G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 518
 519         node = node->GetNext();
 520     }
 521 }
 522
 523 void wxRadioBox::DoApplyWidgetStyle(GtkRcStyle *style)
 524 {
 525     gtk_widget_modify_style( m_widget, style );
 526     gtk_widget_modify_style(GTK_FRAME(m_widget)->label_widget, style);
 527
 528     wxList::compatibility_iterator node = m_boxes.GetFirst();
 529     while (node)
 530     {
 531         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 532
 533         gtk_widget_modify_style( widget, style );
 534         gtk_widget_modify_style( BUTTON_CHILD(node->GetData()), style );
 535
 536         node = node->GetNext();
 537     }
 538 }
 539
 540 #if wxUSE_TOOLTIPS
 541 void wxRadioBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 542 {
 543     wxList::compatibility_iterator node = m_boxes.GetFirst();
 544     while (node)
 545     {
 546         GtkWidget *widget = GTK_WIDGET( node->GetData() );
 547         gtk_tooltips_set_tip( tips, widget, wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 548         node = node->GetNext();
 549     }
 550 }
 551 #endif // wxUSE_TOOLTIPS
 552
 553 bool wxRadioBox::IsOwnGtkWindow( GdkWindow *window )
 554 {
 555     if (window == m_widget->window)
 556         return true;
 557
 558     wxList::compatibility_iterator node = m_boxes.GetFirst();
 559     while (node)
 560     {
 561         GtkWidget *button = GTK_WIDGET( node->GetData() );
 562
 563         if (window == button->window)
 564             return true;
 565
 566         node = node->GetNext();
 567     }
 568
 569     return false;
 570 }
 571
 572 void wxRadioBox::OnInternalIdle()
 573 {
 574     if ( m_lostFocus )
 575     {
 576         m_hasFocus = false;
 577         m_lostFocus = false;
 578
 579         wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
 580         event.SetEventObject( this );
 581
 582         (void)GetEventHandler()->ProcessEvent( event );
 583     }
 584
 585     if (g_delayedFocus == this)
 586     {
 587         if (GTK_WIDGET_REALIZED(m_widget))
 588         {
 589             g_delayedFocus = NULL;
 590             SetFocus();
 591         }
 592     }
 593 }
 594
 595 // static
 596 wxVisualAttributes
 597 wxRadioBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 598 {
 599     wxVisualAttributes attr;
 600     // NB: we need toplevel window so that GTK+ can find the right style
 601     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 602     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 603     gtk_container_add(GTK_CONTAINER(wnd), widget);
 604     attr = GetDefaultAttributesFromGTKWidget(widget);
 605     gtk_widget_destroy(wnd);
 606     return attr;
 607 }
 608
 609 #endif // wxUSE_RADIOBOX