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 #if 1
  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 = 3;
  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                                 1, wxRA_SPECIFY_COLS);
 191     sizerLeft->Add(m_radioDir, 0, wxGROW | wxALL, 5);
 192
 193     // if it's not defined, we can't change the radiobox direction
 194 #ifndef wxRA_LEFTTORIGHT
 195     m_radioDir->Disable();
 196 #endif // wxRA_LEFTTORIGHT
 197
 198     wxSizer *sizerRow;
 199     sizerRow = CreateSizerWithTextAndLabel(_T("&Major dimension:"),
 200                                            -1,
 201                                            &m_textMajorDim);
 202     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 203
 204     sizerRow = CreateSizerWithTextAndLabel(_T("&Number of buttons:"),
 205                                            -1,
 206                                            &m_textNumBtns);
 207     sizerLeft->Add(sizerRow, 0, wxGROW | wxALL, 5);
 208
 209     wxButton *btn;
 210     btn = new wxButton(this, RadioPage_Update, _T("&Update"));
 211     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 5);
 212
 213     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 214
 215     btn = new wxButton(this, RadioPage_Reset, _T("&Reset"));
 216     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 217
 218     // middle pane
 219     wxStaticBox *box2 = new wxStaticBox(this, -1, _T("&Change parameters"));
 220     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 221
 222     sizerRow = CreateSizerWithTextAndLabel(_T("Current selection:"),
 223                                            -1,
 224                                            &m_textCurSel);
 225     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 226
 227     sizerRow = CreateSizerWithTextAndButton(RadioPage_Selection,
 228                                             _T("&Change selection:"),
 229                                            -1,
 230                                            &m_textSel);
 231     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 232
 233     sizerRow = CreateSizerWithTextAndButton(RadioPage_Label,
 234                                             _T("&Label for box:"),
 235                                             -1,
 236                                             &m_textLabel);
 237     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 238
 239     sizerRow = CreateSizerWithTextAndButton(RadioPage_LabelBtn,
 240                                             _T("&Label for buttons:"),
 241                                             -1,
 242                                             &m_textLabelBtns);
 243     sizerMiddle->Add(sizerRow, 0, wxGROW | wxALL, 5);
 244
 245     // right pane
 246     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 247     sizerRight->SetMinSize(150, 0);
 248     m_sizerRadio = sizerRight; // save it to modify it later
 249
 250     Reset();
 251     CreateRadio();
 252
 253     // the 3 panes panes compose the window
 254     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 255     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 256     sizerTop->Add(sizerRight, 0, wxGROW | (wxALL & ~wxRIGHT), 10);
 257
 258     // final initializations
 259     SetAutoLayout(TRUE);
 260     SetSizer(sizerTop);
 261
 262     sizerTop->Fit(this);
 263 }
 264
 265 RadioWidgetsPage::~RadioWidgetsPage()
 266 {
 267 }
 268
 269 // ----------------------------------------------------------------------------
 270 // operations
 271 // ----------------------------------------------------------------------------
 272
 273 void RadioWidgetsPage::Reset()
 274 {
 275     m_textMajorDim->SetValue(wxString::Format(_T("%d"), DEFAULT_MAJOR_DIM));
 276     m_textNumBtns->SetValue(wxString::Format(_T("%d"), DEFAULT_NUM_ENTRIES));
 277     m_textLabel->SetValue(_T("I'm a radiobox"));
 278     m_textLabelBtns->SetValue(_T("item"));
 279
 280     m_chkVert->SetValue(FALSE);
 281     m_radioDir->SetSelection(RadioDir_Default);
 282 }
 283
 284 void RadioWidgetsPage::CreateRadio()
 285 {
 286     int sel;
 287     if ( m_radio )
 288     {
 289         sel = m_radio->GetSelection();
 290
 291         m_sizerRadio->Remove(m_radio);
 292
 293         delete m_radio;
 294     }
 295     else // first time creation, no old selection to preserve
 296     {
 297         sel = -1;
 298     }
 299
 300     unsigned long count;
 301     if ( !m_textNumBtns->GetValue().ToULong(&count) )
 302     {
 303         wxLogWarning(_T("Should have a valid number for number of items."));
 304
 305         // fall back to default
 306         count = DEFAULT_NUM_ENTRIES;
 307     }
 308
 309     unsigned long majorDim;
 310     if ( !m_textMajorDim->GetValue().ToULong(&majorDim) )
 311     {
 312         wxLogWarning(_T("Should have a valid major dimension number."));
 313
 314         // fall back to default
 315         majorDim = DEFAULT_MAJOR_DIM;
 316     }
 317
 318     wxString *items = new wxString[count];
 319
 320     wxString labelBtn = m_textLabelBtns->GetValue();
 321     for ( size_t n = 0; n < count; n++ )
 322     {
 323         items[n] = wxString::Format(_T("%s %u"), labelBtn.c_str(), n + 1);
 324     }
 325
 326     int flags = m_chkVert->GetValue() ? wxRA_VERTICAL
 327                                       : wxRA_HORIZONTAL;
 328
 329 #ifdef wxRA_LEFTTORIGHT
 330     switch ( m_radioDir->GetSelection() )
 331     {
 332         default:
 333             wxFAIL_MSG( _T("unexpected wxRadioBox layout direction") );
 334             // fall through
 335
 336         case RadioDir_Default:
 337             break;
 338
 339         case RadioDir_LtoR:
 340             flags |= wxRA_LEFTTORIGHT;
 341             break;
 342
 343         case RadioDir_TtoB:
 344             flags |= wxRA_TOPTOBOTTOM;
 345             break;
 346     }
 347 #endif // wxRA_LEFTTORIGHT
 348
 349     m_radio = new wxRadioBox(this, RadioPage_Radio,
 350                              m_textLabel->GetValue(),
 351                              wxDefaultPosition, wxDefaultSize,
 352                              count, items,
 353                              majorDim,
 354                              flags);
 355
 356     delete [] items;
 357
 358     if ( sel >= 0 && (size_t)sel < count )
 359     {
 360         m_radio->SetSelection(sel);
 361     }
 362
 363     m_sizerRadio->Add(m_radio, 1, wxGROW);
 364     m_sizerRadio->Layout();
 365 }
 366
 367 // ----------------------------------------------------------------------------
 368 // event handlers
 369 // ----------------------------------------------------------------------------
 370
 371 void RadioWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 372 {
 373     Reset();
 374
 375     CreateRadio();
 376 }
 377
 378 void RadioWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& event)
 379 {
 380     CreateRadio();
 381 }
 382
 383 void RadioWidgetsPage::OnRadioBox(wxCommandEvent& event)
 384 {
 385     int sel = m_radio->GetSelection();
 386
 387     wxLogMessage(_T("Radiobox selection changed, now %d"), sel);
 388
 389     wxASSERT_MSG( sel == event.GetSelection(),
 390                   _T("selection should be the same in event and radiobox") );
 391
 392     m_textCurSel->SetValue(wxString::Format(_T("%d"), sel));
 393 }
 394
 395 void RadioWidgetsPage::OnButtonRecreate(wxCommandEvent& WXUNUSED(event))
 396 {
 397     CreateRadio();
 398 }
 399
 400 void RadioWidgetsPage::OnButtonSetLabel(wxCommandEvent& WXUNUSED(event))
 401 {
 402     m_radio->wxControl::SetLabel(m_textLabel->GetValue());
 403 }
 404
 405 void RadioWidgetsPage::OnButtonSelection(wxCommandEvent& WXUNUSED(event))
 406 {
 407     unsigned long sel;
 408     if ( !m_textSel->GetValue().ToULong(&sel) ||
 409             (sel >= (size_t)m_radio->GetCount()) )
 410     {
 411         wxLogWarning(_T("Invalid number specified as new selection."));
 412     }
 413     else
 414     {
 415         m_radio->SetSelection(sel);
 416     }
 417 }
 418
 419 void RadioWidgetsPage::OnUpdateUIUpdate(wxUpdateUIEvent& event)
 420 {
 421     unsigned long n;
 422     event.Enable( m_textNumBtns->GetValue().ToULong(&n) &&
 423                   m_textMajorDim->GetValue().ToULong(&n) );
 424 }
 425
 426 void RadioWidgetsPage::OnUpdateUISelection(wxUpdateUIEvent& event)
 427 {
 428     unsigned long n;
 429     event.Enable( m_textSel->GetValue().ToULong(&n) &&
 430                    (n < (size_t)m_radio->GetCount()) );
 431 }
 432
 433 void RadioWidgetsPage::OnUpdateUIReset(wxUpdateUIEvent& event)
 434 {
 435     // only enable it if something is not set to default
 436     bool enable = m_chkVert->GetValue();
 437
 438     if ( !enable )
 439     {
 440         unsigned long numEntries;
 441
 442         enable = !m_textNumBtns->GetValue().ToULong(&numEntries) ||
 443                     numEntries != DEFAULT_NUM_ENTRIES;
 444
 445         if ( !enable )
 446         {
 447             unsigned long majorDim;
 448
 449             enable = !m_textMajorDim->GetValue().ToULong(&majorDim) ||
 450                         majorDim != DEFAULT_MAJOR_DIM;
 451         }
 452     }
 453
 454     event.Enable(enable);
 455 }
 456
 457 #endif