samples/widgets/radiobox.cpp

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