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