samples/widgets/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        radiobox.cpp
   4 // Purpose:     Part of the widgets sample showing wxRadioBox
   5 // Author:      Vadim Zeitlin
   6 // Created:     15.04.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // License:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_RADIOBOX
  28
  29 // for all others, include the necessary headers
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32
  33     #include "wx/bitmap.h"
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/radiobox.h"
  37     #include "wx/statbox.h"
  38     #include "wx/textctrl.h"
  39 #endif
  40
  41 #include "wx/sizer.h"
  42
  43 #include "widgets.h"
  44
  45 #include "icons/radiobox.xpm"
  46
  47 // ----------------------------------------------------------------------------
  48 // constants
  49 // ----------------------------------------------------------------------------
  50
  51 // control ids
  52 enum
  53 {
  54     RadioPage_Reset = 100,
  55     RadioPage_Update,
  56     RadioPage_Selection,
  57     RadioPage_Label,
  58     RadioPage_LabelBtn,
  59     RadioPage_EnableItem,
  60     RadioPage_ShowItem,
  61     RadioPage_Radio
  62 };
  63
  64 // layout direction radiobox selections
  65 enum
  66 {
  67     RadioDir_Default,
  68     RadioDir_LtoR,
  69     RadioDir_TtoB
  70 };
  71
  72 // default values for the number of radiobox items
  73 static const unsigned int DEFAULT_NUM_ENTRIES = 12;
  74 static const unsigned int DEFAULT_MAJOR_DIM = 3;
  75
  76 // this item is enabled/disabled shown/hidden by the test checkboxes
  77 static const int TEST_BUTTON = 1;
  78
  79 // ----------------------------------------------------------------------------
  80 // RadioWidgetsPage
  81 // ----------------------------------------------------------------------------
  82
  83 class RadioWidgetsPage : public WidgetsPage
  84 {
  85 public:
  86     RadioWidgetsPage(wxBookCtrlBase *book, wxImageList *imaglist);
  87     virtual ~RadioWidgetsPage(){};
  88
  89     virtual wxControl *GetWidget() const { return m_radio; }
  90     virtual void RecreateWidget() { CreateRadio(); }
  91
  92 protected:
  93     // event handlers
  94     void OnCheckOrRadioBox(wxCommandEvent& event);
  95     void OnRadioBox(wxCommandEvent& event);
  96
  97     void OnButtonReset(wxCommandEvent& event);
  98     void OnButtonRecreate(wxCommandEvent& event);
  99
 100     void OnButtonSelection(wxCommandEvent& event);
 101     void OnButtonSetLabel(wxCommandEvent& event);
 102
 103     void OnEnableItem(wxCommandEvent& event);
 104     void OnShowItem(wxCommandEvent& event);
 105
 106     void OnUpdateUIReset(wxUpdateUIEvent& event);
 107     void OnUpdateUIUpdate(wxUpdateUIEvent& event);
 108     void OnUpdateUISelection(wxUpdateUIEvent& event);
 109     void OnUpdateUIEnableItem(wxUpdateUIEvent& event);
 110     void OnUpdateUIShowItem(wxUpdateUIEvent& event);
 111
 112     // reset the wxRadioBox parameters
 113     void Reset();
 114
 115     // (re)create the wxRadioBox
 116     void CreateRadio();
 117
 118     // the controls
 119     // ------------
 120
 121     // the check/radio boxes for styles
 122     wxCheckBox *m_chkVert;
 123     wxCheckBox *m_chkEnableItem;
 124     wxCheckBox *m_chkShowItem;
 125     wxRadioBox *m_radioDir;
 126
 127     // the gauge itself and the sizer it is in
 128     wxRadioBox *m_radio;
 129     wxSizer *m_sizerRadio;
 130
 131     // the text entries for command parameters
 132     wxTextCtrl *m_textNumBtns,
 133                *m_textMajorDim,
 134                *m_textCurSel,
 135                *m_textSel,
 136                *m_textLabel,
 137                *m_textLabelBtns;
 138
 139 private:
 140     DECLARE_EVENT_TABLE()
 141     DECLARE_WIDGETS_PAGE(RadioWidgetsPage)
 142 };
 143
 144 // ----------------------------------------------------------------------------
 145 // event tables
 146 // ----------------------------------------------------------------------------
 147
 148 BEGIN_EVENT_TABLE(RadioWidgetsPage, WidgetsPage)
 149     EVT_BUTTON(RadioPage_Reset, RadioWidgetsPage::OnButtonReset)
 150
 151     EVT_BUTTON(RadioPage_Update, RadioWidgetsPage::OnButtonRecreate)
 152     EVT_BUTTON(RadioPage_LabelBtn, RadioWidgetsPage::OnButtonRecreate)
 153
 154     EVT_BUTTON(RadioPage_Selection, RadioWidgetsPage::OnButtonSelection)
 155     EVT_BUTTON(RadioPage_Label, RadioWidgetsPage::OnButtonSetLabel)
 156
 157     EVT_UPDATE_UI(RadioPage_Update, RadioWidgetsPage::OnUpdateUIUpdate)
 158     EVT_UPDATE_UI(RadioPage_Selection, RadioWidgetsPage::OnUpdateUISelection)
 159
 160     EVT_RADIOBOX(RadioPage_Radio, RadioWidgetsPage::OnRadioBox)
 161
 162     EVT_CHECKBOX(RadioPage_EnableItem, RadioWidgetsPage::OnEnableItem)
 163     EVT_CHECKBOX(RadioPage_ShowItem, RadioWidgetsPage::OnShowItem)
 164
 165     EVT_UPDATE_UI(RadioPage_EnableItem, RadioWidgetsPage::OnUpdateUIEnableItem)
 166     EVT_UPDATE_UI(RadioPage_ShowItem, RadioWidgetsPage::OnUpdateUIShowItem)
 167
 168     EVT_CHECKBOX(wxID_ANY, RadioWidgetsPage::OnCheckOrRadioBox)
 169     EVT_RADIOBOX(wxID_ANY, RadioWidgetsPage::OnCheckOrRadioBox)
 170 END_EVENT_TABLE()
 171
 172 // ============================================================================
 173 // implementation
 174 // ============================================================================
 175
 176 IMPLEMENT_WIDGETS_PAGE(RadioWidgetsPage, _T("Radio"));
 177
 178 RadioWidgetsPage::RadioWidgetsPage(wxBookCtrlBase *book,
 179                                    wxImageList *imaglist)
 180                   : WidgetsPage(book)
 181 {
 182     imaglist->Add(wxBitmap(radio_xpm));
 183
 184     // init everything
 185     m_chkVert = (wxCheckBox *)NULL;
 186     m_chkEnableItem = (wxCheckBox *)NULL;
 187     m_chkShowItem = (wxCheckBox *)NULL;
 188
 189     m_textNumBtns =
 190     m_textLabelBtns =
 191     m_textLabel = (wxTextCtrl *)NULL;
 192
 193     m_radio =
 194     m_radioDir = (wxRadioBox *)NULL;
 195     m_sizerRadio = (wxSizer *)NULL;
 196
 197     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 198
 199     // left pane
 200     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 201
 202     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 203
 204     m_chkVert = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Vertical layout"));
 205
 206     static const wxString layoutDir[] =
 207     {
 208         _T("default"),
 209         _T("left to right"),
 210         _T("top to bottom")
 211     };
 212
 213     m_radioDir = new wxRadioBox(this, wxID_ANY, _T("Numbering:"),
 214                                 wxDefaultPosition, wxDefaultSize,
 215                                 WXSIZEOF(layoutDir), layoutDir,
 216                                 1, wxRA_SPECIFY_COLS);
 217     sizerLeft->Add(m_radioDir, 0, wxGROW | wxALL, 5);
 218
 219     // if it's not defined, we can't change the radiobox direction
 220 #ifndef wxRA_LEFTTORIGHT
 221     m_radioDir->Disable();
 222 #endif // wxRA_LEFTTORIGHT
 223
 224     wxSizer *sizerRow;
 225     sizerRow = CreateSizerWithTextAndLabel(_T("&Major dimension:"),
 226                                            wxID_ANY,
 227                                            &m_textMajorDim);
 228     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 229
 230     sizerRow = CreateSizerWithTextAndLabel(_T("&Number of buttons:"),
 231                                            wxID_ANY,
 232                                            &m_textNumBtns);
 233     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 234
 235     wxButton *btn;
 236     btn = new wxButton(this, RadioPage_Update, _T("&Update"));
 237     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 5);
 238
 239     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 240
 241     btn = new wxButton(this, RadioPage_Reset, _T("&Reset"));
 242     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 243
 244     // middle pane
 245     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Change parameters"));
 246     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 247
 248     sizerRow = CreateSizerWithTextAndLabel(_T("Current selection:"),
 249                                            wxID_ANY,
 250                                            &m_textCurSel);
 251     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 252
 253     sizerRow = CreateSizerWithTextAndButton(RadioPage_Selection,
 254                                             _T("&Change selection:"),
 255                                            wxID_ANY,
 256                                            &m_textSel);
 257     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 258
 259     sizerRow = CreateSizerWithTextAndButton(RadioPage_Label,
 260                                             _T("&Label for box:"),
 261                                             wxID_ANY,
 262                                             &m_textLabel);
 263     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 264
 265     sizerRow = CreateSizerWithTextAndButton(RadioPage_LabelBtn,
 266                                             _T("&Label for buttons:"),
 267                                             wxID_ANY,
 268                                             &m_textLabelBtns);
 269     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 270
 271     m_chkEnableItem = CreateCheckBoxAndAddToSizer(sizerMiddle,
 272                                                   _T("Disable &2nd item"),
 273                                                   RadioPage_EnableItem);
 274     m_chkShowItem = CreateCheckBoxAndAddToSizer(sizerMiddle,
 275                                                 _T("Hide 2nd &item"),
 276                                                 RadioPage_ShowItem);
 277
 278     // right pane
 279     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 280     sizerRight->SetMinSize(150, 0);
 281     m_sizerRadio = sizerRight; // save it to modify it later
 282
 283     Reset();
 284     CreateRadio();
 285
 286     // the 3 panes panes compose the window
 287     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 288     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 289     sizerTop->Add(sizerRight, 0, wxGROW | (wxALL & ~wxRIGHT), 10);
 290
 291     // final initializations
 292     SetSizer(sizerTop);
 293
 294     sizerTop->Fit(this);
 295 }
 296
 297 // ----------------------------------------------------------------------------
 298 // operations
 299 // ----------------------------------------------------------------------------
 300
 301 void RadioWidgetsPage::Reset()
 302 {
 303     m_textMajorDim->SetValue(wxString::Format(_T("%u"), DEFAULT_MAJOR_DIM));
 304     m_textNumBtns->SetValue(wxString::Format(_T("%u"), DEFAULT_NUM_ENTRIES));
 305     m_textLabel->SetValue(_T("I'm a radiobox"));
 306     m_textLabelBtns->SetValue(_T("item"));
 307
 308     m_chkVert->SetValue(false);
 309     m_chkEnableItem->SetValue(true);
 310     m_chkShowItem->SetValue(true);
 311     m_radioDir->SetSelection(RadioDir_Default);
 312 }
 313
 314 void RadioWidgetsPage::CreateRadio()
 315 {
 316     int sel;
 317     if ( m_radio )
 318     {
 319         sel = m_radio->GetSelection();
 320
 321         m_sizerRadio->Detach( m_radio );
 322
 323         delete m_radio;
 324     }
 325     else // first time creation, no old selection to preserve
 326     {
 327         sel = -1;
 328     }
 329
 330     unsigned long count;
 331     if ( !m_textNumBtns->GetValue().ToULong(&count) )
 332     {
 333         wxLogWarning(_T("Should have a valid number for number of items."));
 334
 335         // fall back to default
 336         count = DEFAULT_NUM_ENTRIES;
 337     }
 338
 339     unsigned long majorDim;
 340     if ( !m_textMajorDim->GetValue().ToULong(&majorDim) )
 341     {
 342         wxLogWarning(_T("Should have a valid major dimension number."));
 343
 344         // fall back to default
 345         majorDim = DEFAULT_MAJOR_DIM;
 346     }
 347
 348     wxString *items = new wxString[count];
 349
 350     wxString labelBtn = m_textLabelBtns->GetValue();
 351     for ( size_t n = 0; n < count; n++ )
 352     {
 353         items[n] = wxString::Format(_T("%s %lu"),
 354                                     labelBtn.c_str(), (unsigned long)n + 1);
 355     }
 356
 357     int flags = m_chkVert->GetValue() ? wxRA_VERTICAL
 358                                       : wxRA_HORIZONTAL;
 359
 360     flags |= ms_defaultFlags;
 361
 362 #ifdef wxRA_LEFTTORIGHT
 363     switch ( m_radioDir->GetSelection() )
 364     {
 365         default:
 366             wxFAIL_MSG( _T("unexpected wxRadioBox layout direction") );
 367             // fall through
 368
 369         case RadioDir_Default:
 370             break;
 371
 372         case RadioDir_LtoR:
 373             flags |= wxRA_LEFTTORIGHT;
 374             break;
 375
 376         case RadioDir_TtoB:
 377             flags |= wxRA_TOPTOBOTTOM;
 378             break;
 379     }
 380 #endif // wxRA_LEFTTORIGHT
 381
 382     m_radio = new wxRadioBox(this, RadioPage_Radio,
 383                              m_textLabel->GetValue(),
 384                              wxDefaultPosition, wxDefaultSize,
 385                              count, items,
 386                              majorDim,
 387                              flags);
 388
 389     delete [] items;
 390
 391     if ( sel >= 0 && (size_t)sel < count )
 392     {
 393         m_radio->SetSelection(sel);
 394     }
 395
 396     m_sizerRadio->Add(m_radio, 1, wxGROW);
 397     m_sizerRadio->Layout();
 398
 399     m_chkEnableItem->SetValue(true);
 400     m_chkEnableItem->SetValue(true);
 401 }
 402
 403 // ----------------------------------------------------------------------------
 404 // event handlers
 405 // ----------------------------------------------------------------------------
 406
 407 void RadioWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 408 {
 409     Reset();
 410
 411     CreateRadio();
 412 }
 413
 414 void RadioWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 415 {
 416     CreateRadio();
 417 }
 418
 419 void RadioWidgetsPage::OnRadioBox(wxCommandEvent& event)
 420 {
 421     int sel = m_radio->GetSelection();
 422     int event_sel = event.GetSelection();
 423     wxUnusedVar(event_sel);
 424
 425     wxLogMessage(_T("Radiobox selection changed, now %d"), sel);
 426
 427     wxASSERT_MSG( sel == event_sel,
 428                   _T("selection should be the same in event and radiobox") );
 429
 430     m_textCurSel->SetValue(wxString::Format(_T("%d"), sel));
 431 }
 432
 433 void RadioWidgetsPage::OnButtonRecreate(wxCommandEvent& WXUNUSED(event))
 434 {
 435     CreateRadio();
 436 }
 437
 438 void RadioWidgetsPage::OnButtonSetLabel(wxCommandEvent& WXUNUSED(event))
 439 {
 440     m_radio->wxControl::SetLabel(m_textLabel->GetValue());
 441 }
 442
 443 void RadioWidgetsPage::OnButtonSelection(wxCommandEvent& WXUNUSED(event))
 444 {
 445     unsigned long sel;
 446     if ( !m_textSel->GetValue().ToULong(&sel) ||
 447             (sel >= (size_t)m_radio->GetCount()) )
 448     {
 449         wxLogWarning(_T("Invalid number specified as new selection."));
 450     }
 451     else
 452     {
 453         m_radio->SetSelection(sel);
 454     }
 455 }
 456
 457 void RadioWidgetsPage::OnEnableItem(wxCommandEvent& event)
 458 {
 459     m_radio->Enable(TEST_BUTTON, event.IsChecked());
 460 }
 461
 462 void RadioWidgetsPage::OnShowItem(wxCommandEvent& event)
 463 {
 464     m_radio->Show(TEST_BUTTON, event.IsChecked());
 465 }
 466
 467 void RadioWidgetsPage::OnUpdateUIUpdate(wxUpdateUIEvent& event)
 468 {
 469     unsigned long n;
 470     event.Enable( m_textNumBtns->GetValue().ToULong(&n) &&
 471                   m_textMajorDim->GetValue().ToULong(&n) );
 472 }
 473
 474 void RadioWidgetsPage::OnUpdateUISelection(wxUpdateUIEvent& event)
 475 {
 476     unsigned long n;
 477     event.Enable( m_textSel->GetValue().ToULong(&n) &&
 478                    (n < (size_t)m_radio->GetCount()) );
 479 }
 480
 481 void RadioWidgetsPage::OnUpdateUIReset(wxUpdateUIEvent& event)
 482 {
 483     // only enable it if something is not set to default
 484     bool enable = m_chkVert->GetValue();
 485
 486     if ( !enable )
 487     {
 488         unsigned long numEntries;
 489
 490         enable = !m_textNumBtns->GetValue().ToULong(&numEntries) ||
 491                     numEntries != DEFAULT_NUM_ENTRIES;
 492
 493         if ( !enable )
 494         {
 495             unsigned long majorDim;
 496
 497             enable = !m_textMajorDim->GetValue().ToULong(&majorDim) ||
 498                         majorDim != DEFAULT_MAJOR_DIM;
 499         }
 500     }
 501
 502     event.Enable(enable);
 503 }
 504
 505 void RadioWidgetsPage::OnUpdateUIEnableItem(wxUpdateUIEvent& event)
 506 {
 507     event.SetText(m_radio->IsItemEnabled(TEST_BUTTON) ? _T("Disable &2nd item")
 508                                                       : _T("Enable &2nd item"));
 509 }
 510
 511 void RadioWidgetsPage::OnUpdateUIShowItem(wxUpdateUIEvent& event)
 512 {
 513     event.SetText(m_radio->IsItemShown(TEST_BUTTON) ? _T("Hide 2nd &item")
 514                                                     : _T("Show 2nd &item"));
 515 }
 516
 517 #endif // wxUSE_RADIOBOX