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_Enable2nd,
  60     RadioPage_Show2nd,
  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 // ----------------------------------------------------------------------------
  77 // RadioWidgetsPage
  78 // ----------------------------------------------------------------------------
  79
  80 class RadioWidgetsPage : public WidgetsPage
  81 {
  82 public:
  83     RadioWidgetsPage(wxBookCtrlBase *book, wxImageList *imaglist);
  84     virtual ~RadioWidgetsPage(){};
  85
  86     virtual wxControl *GetWidget() const { return m_radio; }
  87
  88 protected:
  89     // event handlers
  90     void OnCheckOrRadioBox(wxCommandEvent& event);
  91     void OnRadioBox(wxCommandEvent& event);
  92
  93     void OnButtonReset(wxCommandEvent& event);
  94     void OnButtonRecreate(wxCommandEvent& event);
  95
  96     void OnButtonSelection(wxCommandEvent& event);
  97     void OnButtonSetLabel(wxCommandEvent& event);
  98
  99     void OnUpdateUIReset(wxUpdateUIEvent& event);
 100     void OnUpdateUIUpdate(wxUpdateUIEvent& event);
 101     void OnUpdateUISelection(wxUpdateUIEvent& event);
 102
 103     // reset the wxRadioBox parameters
 104     void Reset();
 105
 106     // (re)create the wxRadioBox
 107     void CreateRadio();
 108
 109     // the controls
 110     // ------------
 111
 112     // the check/radio boxes for styles
 113     wxCheckBox *m_chkVert;
 114     wxCheckBox *m_2ndEnabled;
 115     wxCheckBox *m_2ndShown;
 116     wxRadioBox *m_radioDir;
 117
 118     // the gauge itself and the sizer it is in
 119     wxRadioBox *m_radio;
 120     wxSizer *m_sizerRadio;
 121
 122     // the text entries for command parameters
 123     wxTextCtrl *m_textNumBtns,
 124                *m_textMajorDim,
 125                *m_textCurSel,
 126                *m_textSel,
 127                *m_textLabel,
 128                *m_textLabelBtns;
 129
 130 private:
 131     DECLARE_EVENT_TABLE()
 132     DECLARE_WIDGETS_PAGE(RadioWidgetsPage)
 133 };
 134
 135 // ----------------------------------------------------------------------------
 136 // event tables
 137 // ----------------------------------------------------------------------------
 138
 139 BEGIN_EVENT_TABLE(RadioWidgetsPage, WidgetsPage)
 140     EVT_BUTTON(RadioPage_Reset, RadioWidgetsPage::OnButtonReset)
 141
 142     EVT_BUTTON(RadioPage_Update, RadioWidgetsPage::OnButtonRecreate)
 143     EVT_BUTTON(RadioPage_LabelBtn, RadioWidgetsPage::OnButtonRecreate)
 144
 145     EVT_BUTTON(RadioPage_Selection, RadioWidgetsPage::OnButtonSelection)
 146     EVT_BUTTON(RadioPage_Label, RadioWidgetsPage::OnButtonSetLabel)
 147
 148     EVT_UPDATE_UI(RadioPage_Update, RadioWidgetsPage::OnUpdateUIUpdate)
 149     EVT_UPDATE_UI(RadioPage_Selection, RadioWidgetsPage::OnUpdateUISelection)
 150
 151     EVT_RADIOBOX(RadioPage_Radio, RadioWidgetsPage::OnRadioBox)
 152
 153     EVT_CHECKBOX(wxID_ANY, RadioWidgetsPage::OnCheckOrRadioBox)
 154     EVT_RADIOBOX(wxID_ANY, RadioWidgetsPage::OnCheckOrRadioBox)
 155 END_EVENT_TABLE()
 156
 157 // ============================================================================
 158 // implementation
 159 // ============================================================================
 160
 161 IMPLEMENT_WIDGETS_PAGE(RadioWidgetsPage, _T("Radio"));
 162
 163 RadioWidgetsPage::RadioWidgetsPage(wxBookCtrlBase *book,
 164                                    wxImageList *imaglist)
 165                   : WidgetsPage(book)
 166 {
 167     imaglist->Add(wxBitmap(radio_xpm));
 168
 169     // init everything
 170     m_chkVert = (wxCheckBox *)NULL;
 171     m_2ndEnabled = (wxCheckBox *)NULL;
 172     m_2ndShown = (wxCheckBox *)NULL;
 173
 174     m_textNumBtns =
 175     m_textLabelBtns =
 176     m_textLabel = (wxTextCtrl *)NULL;
 177
 178     m_radio =
 179     m_radioDir = (wxRadioBox *)NULL;
 180     m_sizerRadio = (wxSizer *)NULL;
 181
 182     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 183
 184     // left pane
 185     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 186
 187     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 188
 189     m_chkVert = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Vertical layout"));
 190
 191     static const wxString layoutDir[] =
 192     {
 193         _T("default"),
 194         _T("left to right"),
 195         _T("top to bottom")
 196     };
 197
 198     m_radioDir = new wxRadioBox(this, wxID_ANY, _T("Numbering:"),
 199                                 wxDefaultPosition, wxDefaultSize,
 200                                 WXSIZEOF(layoutDir), layoutDir,
 201                                 1, wxRA_SPECIFY_COLS);
 202     sizerLeft->Add(m_radioDir, 0, wxGROW | wxALL, 5);
 203
 204     // if it's not defined, we can't change the radiobox direction
 205 #ifndef wxRA_LEFTTORIGHT
 206     m_radioDir->Disable();
 207 #endif // wxRA_LEFTTORIGHT
 208
 209     wxSizer *sizerRow;
 210     sizerRow = CreateSizerWithTextAndLabel(_T("&Major dimension:"),
 211                                            wxID_ANY,
 212                                            &m_textMajorDim);
 213     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 214
 215     sizerRow = CreateSizerWithTextAndLabel(_T("&Number of buttons:"),
 216                                            wxID_ANY,
 217                                            &m_textNumBtns);
 218     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 219
 220     wxButton *btn;
 221     btn = new wxButton(this, RadioPage_Update, _T("&Update"));
 222     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 5);
 223
 224     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 225
 226     btn = new wxButton(this, RadioPage_Reset, _T("&Reset"));
 227     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 228
 229     // middle pane
 230     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Change parameters"));
 231     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 232
 233     sizerRow = CreateSizerWithTextAndLabel(_T("Current selection:"),
 234                                            wxID_ANY,
 235                                            &m_textCurSel);
 236     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 237
 238     sizerRow = CreateSizerWithTextAndButton(RadioPage_Selection,
 239                                             _T("&Change selection:"),
 240                                            wxID_ANY,
 241                                            &m_textSel);
 242     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 243
 244     sizerRow = CreateSizerWithTextAndButton(RadioPage_Label,
 245                                             _T("&Label for box:"),
 246                                             wxID_ANY,
 247                                             &m_textLabel);
 248     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 249
 250     sizerRow = CreateSizerWithTextAndButton(RadioPage_LabelBtn,
 251                                             _T("&Label for buttons:"),
 252                                             wxID_ANY,
 253                                             &m_textLabelBtns);
 254     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 255
 256     m_2ndEnabled = CreateCheckBoxAndAddToSizer(sizerMiddle, _T("2nd item enabled"));
 257     m_2ndShown = CreateCheckBoxAndAddToSizer(sizerMiddle, _T("2nd item shown"));
 258
 259     // right pane
 260     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 261     sizerRight->SetMinSize(150, 0);
 262     m_sizerRadio = sizerRight; // save it to modify it later
 263
 264     Reset();
 265     CreateRadio();
 266
 267     // the 3 panes panes compose the window
 268     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 269     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 270     sizerTop->Add(sizerRight, 0, wxGROW | (wxALL & ~wxRIGHT), 10);
 271
 272     // final initializations
 273     SetSizer(sizerTop);
 274
 275     sizerTop->Fit(this);
 276 }
 277
 278 // ----------------------------------------------------------------------------
 279 // operations
 280 // ----------------------------------------------------------------------------
 281
 282 void RadioWidgetsPage::Reset()
 283 {
 284     m_textMajorDim->SetValue(wxString::Format(_T("%u"), DEFAULT_MAJOR_DIM));
 285     m_textNumBtns->SetValue(wxString::Format(_T("%u"), DEFAULT_NUM_ENTRIES));
 286     m_textLabel->SetValue(_T("I'm a radiobox"));
 287     m_textLabelBtns->SetValue(_T("item"));
 288
 289     m_chkVert->SetValue(false);
 290     m_2ndEnabled->SetValue(true);
 291     m_2ndShown->SetValue(true);
 292     m_radioDir->SetSelection(RadioDir_Default);
 293 }
 294
 295 void RadioWidgetsPage::CreateRadio()
 296 {
 297     int sel;
 298     if ( m_radio )
 299     {
 300         sel = m_radio->GetSelection();
 301
 302         m_sizerRadio->Detach( m_radio );
 303
 304         delete m_radio;
 305     }
 306     else // first time creation, no old selection to preserve
 307     {
 308         sel = -1;
 309     }
 310
 311     unsigned long count;
 312     if ( !m_textNumBtns->GetValue().ToULong(&count) )
 313     {
 314         wxLogWarning(_T("Should have a valid number for number of items."));
 315
 316         // fall back to default
 317         count = DEFAULT_NUM_ENTRIES;
 318     }
 319
 320     unsigned long majorDim;
 321     if ( !m_textMajorDim->GetValue().ToULong(&majorDim) )
 322     {
 323         wxLogWarning(_T("Should have a valid major dimension number."));
 324
 325         // fall back to default
 326         majorDim = DEFAULT_MAJOR_DIM;
 327     }
 328
 329     wxString *items = new wxString[count];
 330
 331     wxString labelBtn = m_textLabelBtns->GetValue();
 332     for ( size_t n = 0; n < count; n++ )
 333     {
 334         items[n] = wxString::Format(_T("%s %lu"),
 335                                     labelBtn.c_str(), (unsigned long)n + 1);
 336     }
 337
 338     int flags = m_chkVert->GetValue() ? wxRA_VERTICAL
 339                                       : wxRA_HORIZONTAL;
 340
 341 #ifdef wxRA_LEFTTORIGHT
 342     switch ( m_radioDir->GetSelection() )
 343     {
 344         default:
 345             wxFAIL_MSG( _T("unexpected wxRadioBox layout direction") );
 346             // fall through
 347
 348         case RadioDir_Default:
 349             break;
 350
 351         case RadioDir_LtoR:
 352             flags |= wxRA_LEFTTORIGHT;
 353             break;
 354
 355         case RadioDir_TtoB:
 356             flags |= wxRA_TOPTOBOTTOM;
 357             break;
 358     }
 359 #endif // wxRA_LEFTTORIGHT
 360
 361     m_radio = new wxRadioBox(this, RadioPage_Radio,
 362                              m_textLabel->GetValue(),
 363                              wxDefaultPosition, wxDefaultSize,
 364                              count, items,
 365                              majorDim,
 366                              flags);
 367
 368     delete [] items;
 369
 370     if ( sel >= 0 && (size_t)sel < count )
 371     {
 372         m_radio->SetSelection(sel);
 373     }
 374
 375     m_sizerRadio->Add(m_radio, 1, wxGROW);
 376     m_sizerRadio->Layout();
 377
 378     m_radio->Enable( 1 , m_2ndEnabled->GetValue() );
 379     m_radio->Show( 1 , m_2ndShown->GetValue() );
 380 }
 381
 382 // ----------------------------------------------------------------------------
 383 // event handlers
 384 // ----------------------------------------------------------------------------
 385
 386 void RadioWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 387 {
 388     Reset();
 389
 390     CreateRadio();
 391 }
 392
 393 void RadioWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 394 {
 395     CreateRadio();
 396 }
 397
 398 void RadioWidgetsPage::OnRadioBox(wxCommandEvent& event)
 399 {
 400     int sel = m_radio->GetSelection();
 401     int event_sel = event.GetSelection();
 402     wxUnusedVar(event_sel);
 403
 404     wxLogMessage(_T("Radiobox selection changed, now %d"), sel);
 405
 406     wxASSERT_MSG( sel == event_sel,
 407                   _T("selection should be the same in event and radiobox") );
 408
 409     m_textCurSel->SetValue(wxString::Format(_T("%d"), sel));
 410 }
 411
 412 void RadioWidgetsPage::OnButtonRecreate(wxCommandEvent& WXUNUSED(event))
 413 {
 414     CreateRadio();
 415 }
 416
 417 void RadioWidgetsPage::OnButtonSetLabel(wxCommandEvent& WXUNUSED(event))
 418 {
 419     m_radio->wxControl::SetLabel(m_textLabel->GetValue());
 420 }
 421
 422 void RadioWidgetsPage::OnButtonSelection(wxCommandEvent& WXUNUSED(event))
 423 {
 424     unsigned long sel;
 425     if ( !m_textSel->GetValue().ToULong(&sel) ||
 426             (sel >= (size_t)m_radio->GetCount()) )
 427     {
 428         wxLogWarning(_T("Invalid number specified as new selection."));
 429     }
 430     else
 431     {
 432         m_radio->SetSelection(sel);
 433     }
 434 }
 435
 436 void RadioWidgetsPage::OnUpdateUIUpdate(wxUpdateUIEvent& event)
 437 {
 438     unsigned long n;
 439     event.Enable( m_textNumBtns->GetValue().ToULong(&n) &&
 440                   m_textMajorDim->GetValue().ToULong(&n) );
 441 }
 442
 443 void RadioWidgetsPage::OnUpdateUISelection(wxUpdateUIEvent& event)
 444 {
 445     unsigned long n;
 446     event.Enable( m_textSel->GetValue().ToULong(&n) &&
 447                    (n < (size_t)m_radio->GetCount()) );
 448 }
 449
 450 void RadioWidgetsPage::OnUpdateUIReset(wxUpdateUIEvent& event)
 451 {
 452     // only enable it if something is not set to default
 453     bool enable = m_chkVert->GetValue();
 454
 455     if ( !enable )
 456     {
 457         unsigned long numEntries;
 458
 459         enable = !m_textNumBtns->GetValue().ToULong(&numEntries) ||
 460                     numEntries != DEFAULT_NUM_ENTRIES;
 461
 462         if ( !enable )
 463         {
 464             unsigned long majorDim;
 465
 466             enable = !m_textMajorDim->GetValue().ToULong(&majorDim) ||
 467                         majorDim != DEFAULT_MAJOR_DIM;
 468         }
 469     }
 470
 471     event.Enable(enable);
 472 }
 473
 474 #endif // wxUSE_RADIOBOX