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(WidgetsBookCtrl *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                        (int)wxPlatform(GENERIC_CTRLS).If(wxMSW,NATIVE_CTRLS)
 178                        | WITH_ITEMS_CTRLS
 179                        );
 180
 181 RadioWidgetsPage::RadioWidgetsPage(WidgetsBookCtrl *book,
 182                                    wxImageList *imaglist)
 183                   : WidgetsPage(book)
 184 {
 185     imaglist->Add(wxBitmap(radio_xpm));
 186
 187     // init everything
 188     m_chkVert = (wxCheckBox *)NULL;
 189     m_chkEnableItem = (wxCheckBox *)NULL;
 190     m_chkShowItem = (wxCheckBox *)NULL;
 191
 192     m_textNumBtns =
 193     m_textLabelBtns =
 194     m_textLabel = (wxTextCtrl *)NULL;
 195
 196     m_radio =
 197     m_radioDir = (wxRadioBox *)NULL;
 198     m_sizerRadio = (wxSizer *)NULL;
 199
 200     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 201
 202     // left pane
 203     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 204
 205     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 206
 207     m_chkVert = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Vertical layout"));
 208
 209     static const wxString layoutDir[] =
 210     {
 211         _T("default"),
 212         _T("left to right"),
 213         _T("top to bottom")
 214     };
 215
 216     m_radioDir = new wxRadioBox(this, wxID_ANY, _T("Numbering:"),
 217                                 wxDefaultPosition, wxDefaultSize,
 218                                 WXSIZEOF(layoutDir), layoutDir,
 219                                 1, wxRA_SPECIFY_COLS);
 220     sizerLeft->Add(m_radioDir, 0, wxGROW | wxALL, 5);
 221
 222     // if it's not defined, we can't change the radiobox direction
 223 #ifndef wxRA_LEFTTORIGHT
 224     m_radioDir->Disable();
 225 #endif // wxRA_LEFTTORIGHT
 226
 227     wxSizer *sizerRow;
 228     sizerRow = CreateSizerWithTextAndLabel(_T("&Major dimension:"),
 229                                            wxID_ANY,
 230                                            &m_textMajorDim);
 231     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 232
 233     sizerRow = CreateSizerWithTextAndLabel(_T("&Number of buttons:"),
 234                                            wxID_ANY,
 235                                            &m_textNumBtns);
 236     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 237
 238     wxButton *btn;
 239     btn = new wxButton(this, RadioPage_Update, _T("&Update"));
 240     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 5);
 241
 242     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 243
 244     btn = new wxButton(this, RadioPage_Reset, _T("&Reset"));
 245     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 246
 247     // middle pane
 248     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Change parameters"));
 249     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 250
 251     sizerRow = CreateSizerWithTextAndLabel(_T("Current selection:"),
 252                                            wxID_ANY,
 253                                            &m_textCurSel);
 254     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 255
 256     sizerRow = CreateSizerWithTextAndButton(RadioPage_Selection,
 257                                             _T("&Change selection:"),
 258                                            wxID_ANY,
 259                                            &m_textSel);
 260     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 261
 262     sizerRow = CreateSizerWithTextAndButton(RadioPage_Label,
 263                                             _T("&Label for box:"),
 264                                             wxID_ANY,
 265                                             &m_textLabel);
 266     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 267
 268     sizerRow = CreateSizerWithTextAndButton(RadioPage_LabelBtn,
 269                                             _T("&Label for buttons:"),
 270                                             wxID_ANY,
 271                                             &m_textLabelBtns);
 272     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 273
 274     m_chkEnableItem = CreateCheckBoxAndAddToSizer(sizerMiddle,
 275                                                   _T("Disable &2nd item"),
 276                                                   RadioPage_EnableItem);
 277     m_chkShowItem = CreateCheckBoxAndAddToSizer(sizerMiddle,
 278                                                 _T("Hide 2nd &item"),
 279                                                 RadioPage_ShowItem);
 280
 281     // right pane
 282     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 283     sizerRight->SetMinSize(150, 0);
 284     m_sizerRadio = sizerRight; // save it to modify it later
 285
 286     Reset();
 287     CreateRadio();
 288
 289     // the 3 panes panes compose the window
 290     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 291     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 292     sizerTop->Add(sizerRight, 0, wxGROW | (wxALL & ~wxRIGHT), 10);
 293
 294     // final initializations
 295     SetSizer(sizerTop);
 296
 297     sizerTop->Fit(this);
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // operations
 302 // ----------------------------------------------------------------------------
 303
 304 void RadioWidgetsPage::Reset()
 305 {
 306     m_textMajorDim->SetValue(wxString::Format(_T("%u"), DEFAULT_MAJOR_DIM));
 307     m_textNumBtns->SetValue(wxString::Format(_T("%u"), DEFAULT_NUM_ENTRIES));
 308     m_textLabel->SetValue(_T("I'm a radiobox"));
 309     m_textLabelBtns->SetValue(_T("item"));
 310
 311     m_chkVert->SetValue(false);
 312     m_chkEnableItem->SetValue(true);
 313     m_chkShowItem->SetValue(true);
 314     m_radioDir->SetSelection(RadioDir_Default);
 315 }
 316
 317 void RadioWidgetsPage::CreateRadio()
 318 {
 319     int sel;
 320     if ( m_radio )
 321     {
 322         sel = m_radio->GetSelection();
 323
 324         m_sizerRadio->Detach( m_radio );
 325
 326         delete m_radio;
 327     }
 328     else // first time creation, no old selection to preserve
 329     {
 330         sel = -1;
 331     }
 332
 333     unsigned long count;
 334     if ( !m_textNumBtns->GetValue().ToULong(&count) )
 335     {
 336         wxLogWarning(_T("Should have a valid number for number of items."));
 337
 338         // fall back to default
 339         count = DEFAULT_NUM_ENTRIES;
 340     }
 341
 342     unsigned long majorDim;
 343     if ( !m_textMajorDim->GetValue().ToULong(&majorDim) )
 344     {
 345         wxLogWarning(_T("Should have a valid major dimension number."));
 346
 347         // fall back to default
 348         majorDim = DEFAULT_MAJOR_DIM;
 349     }
 350
 351     wxString *items = new wxString[count];
 352
 353     wxString labelBtn = m_textLabelBtns->GetValue();
 354     for ( size_t n = 0; n < count; n++ )
 355     {
 356         items[n] = wxString::Format(_T("%s %lu"),
 357                                     labelBtn.c_str(), (unsigned long)n + 1);
 358     }
 359
 360     int flags = m_chkVert->GetValue() ? wxRA_VERTICAL
 361                                       : wxRA_HORIZONTAL;
 362
 363     flags |= ms_defaultFlags;
 364
 365 #ifdef wxRA_LEFTTORIGHT
 366     switch ( m_radioDir->GetSelection() )
 367     {
 368         default:
 369             wxFAIL_MSG( _T("unexpected wxRadioBox layout direction") );
 370             // fall through
 371
 372         case RadioDir_Default:
 373             break;
 374
 375         case RadioDir_LtoR:
 376             flags |= wxRA_LEFTTORIGHT;
 377             break;
 378
 379         case RadioDir_TtoB:
 380             flags |= wxRA_TOPTOBOTTOM;
 381             break;
 382     }
 383 #endif // wxRA_LEFTTORIGHT
 384
 385     m_radio = new wxRadioBox(this, RadioPage_Radio,
 386                              m_textLabel->GetValue(),
 387                              wxDefaultPosition, wxDefaultSize,
 388                              count, items,
 389                              majorDim,
 390                              flags);
 391
 392     delete [] items;
 393
 394     if ( sel >= 0 && (size_t)sel < count )
 395     {
 396         m_radio->SetSelection(sel);
 397     }
 398
 399     m_sizerRadio->Add(m_radio, 1, wxGROW);
 400     m_sizerRadio->Layout();
 401
 402     m_chkEnableItem->SetValue(true);
 403     m_chkEnableItem->SetValue(true);
 404 }
 405
 406 // ----------------------------------------------------------------------------
 407 // event handlers
 408 // ----------------------------------------------------------------------------
 409
 410 void RadioWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 411 {
 412     Reset();
 413
 414     CreateRadio();
 415 }
 416
 417 void RadioWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 418 {
 419     CreateRadio();
 420 }
 421
 422 void RadioWidgetsPage::OnRadioBox(wxCommandEvent& event)
 423 {
 424     int sel = m_radio->GetSelection();
 425     int event_sel = event.GetSelection();
 426     wxUnusedVar(event_sel);
 427
 428     wxLogMessage(_T("Radiobox selection changed, now %d"), sel);
 429
 430     wxASSERT_MSG( sel == event_sel,
 431                   _T("selection should be the same in event and radiobox") );
 432
 433     m_textCurSel->SetValue(wxString::Format(_T("%d"), sel));
 434 }
 435
 436 void RadioWidgetsPage::OnButtonRecreate(wxCommandEvent& WXUNUSED(event))
 437 {
 438     CreateRadio();
 439 }
 440
 441 void RadioWidgetsPage::OnButtonSetLabel(wxCommandEvent& WXUNUSED(event))
 442 {
 443     m_radio->wxControl::SetLabel(m_textLabel->GetValue());
 444 }
 445
 446 void RadioWidgetsPage::OnButtonSelection(wxCommandEvent& WXUNUSED(event))
 447 {
 448     unsigned long sel;
 449     if ( !m_textSel->GetValue().ToULong(&sel) ||
 450             (sel >= (size_t)m_radio->GetCount()) )
 451     {
 452         wxLogWarning(_T("Invalid number specified as new selection."));
 453     }
 454     else
 455     {
 456         m_radio->SetSelection(sel);
 457     }
 458 }
 459
 460 void RadioWidgetsPage::OnEnableItem(wxCommandEvent& event)
 461 {
 462     m_radio->Enable(TEST_BUTTON, event.IsChecked());
 463 }
 464
 465 void RadioWidgetsPage::OnShowItem(wxCommandEvent& event)
 466 {
 467     m_radio->Show(TEST_BUTTON, event.IsChecked());
 468 }
 469
 470 void RadioWidgetsPage::OnUpdateUIUpdate(wxUpdateUIEvent& event)
 471 {
 472     unsigned long n;
 473     event.Enable( m_textNumBtns->GetValue().ToULong(&n) &&
 474                   m_textMajorDim->GetValue().ToULong(&n) );
 475 }
 476
 477 void RadioWidgetsPage::OnUpdateUISelection(wxUpdateUIEvent& event)
 478 {
 479     unsigned long n;
 480     event.Enable( m_textSel->GetValue().ToULong(&n) &&
 481                    (n < (size_t)m_radio->GetCount()) );
 482 }
 483
 484 void RadioWidgetsPage::OnUpdateUIReset(wxUpdateUIEvent& event)
 485 {
 486     // only enable it if something is not set to default
 487     bool enable = m_chkVert->GetValue();
 488
 489     if ( !enable )
 490     {
 491         unsigned long numEntries;
 492
 493         enable = !m_textNumBtns->GetValue().ToULong(&numEntries) ||
 494                     numEntries != DEFAULT_NUM_ENTRIES;
 495
 496         if ( !enable )
 497         {
 498             unsigned long majorDim;
 499
 500             enable = !m_textMajorDim->GetValue().ToULong(&majorDim) ||
 501                         majorDim != DEFAULT_MAJOR_DIM;
 502         }
 503     }
 504
 505     event.Enable(enable);
 506 }
 507
 508 void RadioWidgetsPage::OnUpdateUIEnableItem(wxUpdateUIEvent& event)
 509 {
 510     event.SetText(m_radio->IsItemEnabled(TEST_BUTTON) ? _T("Disable &2nd item")
 511                                                       : _T("Enable &2nd item"));
 512 }
 513
 514 void RadioWidgetsPage::OnUpdateUIShowItem(wxUpdateUIEvent& event)
 515 {
 516     event.SetText(m_radio->IsItemShown(TEST_BUTTON) ? _T("Hide 2nd &item")
 517                                                     : _T("Show 2nd &item"));
 518 }
 519
 520 #endif // wxUSE_RADIOBOX