samples/widgets/checkbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        checkbox.cpp
   4 // Purpose:     Part of the widgets sample showing wxCheckBox
   5 // Author:      Dimitri Schoolwerth, Vadim Zeitlin
   6 // Created:     27 Sep 2003
   7 // Id:          $Id$
   8 // Copyright:   (c) 2003 wxWindows team
   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/app.h"
  30     #include "wx/log.h"
  31
  32     #include "wx/bitmap.h"
  33     #include "wx/button.h"
  34     #include "wx/checkbox.h"
  35
  36     #include "wx/sizer.h"
  37 #endif
  38
  39 #include "widgets.h"
  40
  41 #include "icons/checkbox.xpm"
  42
  43 // ----------------------------------------------------------------------------
  44 // constants
  45 // ----------------------------------------------------------------------------
  46
  47 // control ids
  48 enum
  49 {
  50     CheckboxPage_Reset = 100,
  51     CheckboxPage_ChangeLabel,
  52     CheckboxPage_Check,
  53     CheckboxPage_Uncheck,
  54     CheckboxPage_PartCheck,
  55     CheckboxPage_ChkRight,
  56     CheckboxPage_Checkbox
  57 };
  58
  59 enum
  60 {
  61     CheckboxKind_2State,
  62     CheckboxKind_3State,
  63     CheckboxKind_3StateUser
  64 };
  65
  66 // ----------------------------------------------------------------------------
  67 // CheckBoxWidgetsPage
  68 // ----------------------------------------------------------------------------
  69
  70 class CheckBoxWidgetsPage : public WidgetsPage
  71 {
  72 public:
  73     CheckBoxWidgetsPage(wxNotebook *notebook, wxImageList *imaglist);
  74     virtual ~CheckBoxWidgetsPage();
  75
  76 protected:
  77     // event handlers
  78     void OnCheckBox(wxCommandEvent& event);
  79
  80     void OnStyleChange(wxCommandEvent& event);
  81     void OnButtonReset(wxCommandEvent& event);
  82     void OnButtonChangeLabel(wxCommandEvent& event);
  83
  84     void OnButtonCheck(wxCommandEvent&) { m_checkbox->SetValue(true); }
  85     void OnButtonUncheck(wxCommandEvent&) { m_checkbox->SetValue(false); }
  86     void OnButtonPartCheck(wxCommandEvent&)
  87     {
  88         m_checkbox->Set3StateValue(wxCHK_UNDETERMINED);
  89     }
  90
  91     void Is3State(wxUpdateUIEvent& event)
  92     {
  93         event.Enable( m_checkbox->Is3State() );
  94     }
  95
  96
  97     // reset the wxCheckBox parameters
  98     void Reset();
  99
 100     // (re)create the wxCheckBox
 101     void CreateCheckbox();
 102
 103     // the controls
 104     // ------------
 105
 106     // the contols to choose the checkbox style
 107     wxCheckBox *m_chkRight;
 108     wxRadioBox *m_radioKind;
 109
 110     // the checkbox itself and the sizer it is in
 111     wxCheckBox *m_checkbox;
 112     wxSizer *m_sizerCheckbox;
 113
 114     // the text entries for command parameters
 115     wxTextCtrl *m_textLabel;
 116
 117 private:
 118     DECLARE_EVENT_TABLE()
 119     DECLARE_WIDGETS_PAGE(CheckBoxWidgetsPage)
 120 };
 121
 122 // ----------------------------------------------------------------------------
 123 // event tables
 124 // ----------------------------------------------------------------------------
 125
 126 BEGIN_EVENT_TABLE(CheckBoxWidgetsPage, WidgetsPage)
 127     EVT_CHECKBOX(CheckboxPage_Checkbox, CheckBoxWidgetsPage::OnCheckBox)
 128
 129     EVT_BUTTON(CheckboxPage_Reset, CheckBoxWidgetsPage::OnButtonReset)
 130     EVT_BUTTON(CheckboxPage_ChangeLabel, CheckBoxWidgetsPage::OnButtonChangeLabel)
 131     EVT_BUTTON(CheckboxPage_Check, CheckBoxWidgetsPage::OnButtonCheck)
 132     EVT_BUTTON(CheckboxPage_Uncheck, CheckBoxWidgetsPage::OnButtonUncheck)
 133     EVT_BUTTON(CheckboxPage_PartCheck, CheckBoxWidgetsPage::OnButtonPartCheck)
 134
 135     EVT_UPDATE_UI(CheckboxPage_PartCheck, CheckBoxWidgetsPage::Is3State)
 136
 137     EVT_RADIOBOX(wxID_ANY, CheckBoxWidgetsPage::OnStyleChange)
 138     EVT_CHECKBOX(CheckboxPage_ChkRight, CheckBoxWidgetsPage::OnStyleChange)
 139 END_EVENT_TABLE()
 140
 141 // ============================================================================
 142 // implementation
 143 // ============================================================================
 144
 145 IMPLEMENT_WIDGETS_PAGE(CheckBoxWidgetsPage, wxT("CheckBox"));
 146
 147 CheckBoxWidgetsPage::CheckBoxWidgetsPage(wxNotebook *notebook,
 148                                        wxImageList *imaglist)
 149                   : WidgetsPage(notebook)
 150 {
 151     imaglist->Add(wxBitmap(checkbox_xpm));
 152
 153     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 154
 155     // left pane
 156     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 157
 158     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 159
 160     m_chkRight = CreateCheckBoxAndAddToSizer
 161                  (
 162                     sizerLeft,
 163                     _T("&Right aligned"),
 164                     CheckboxPage_ChkRight
 165                  );
 166
 167     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 168
 169     static const wxString kinds[] =
 170     {
 171         _T("usual &2-state checkbox"),
 172         _T("&3rd state settable by program"),
 173         _T("&user-settable 3rd state"),
 174     };
 175
 176     m_radioKind = new wxRadioBox(this, wxID_ANY, _T("&Kind"),
 177                                  wxDefaultPosition, wxDefaultSize,
 178                                  WXSIZEOF(kinds), kinds,
 179                                  1);
 180     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 181     wxButton *btn = new wxButton(this, CheckboxPage_Reset, _T("&Reset"));
 182     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 183
 184     // middle pane
 185     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 186     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 187
 188     sizerMiddle->Add(CreateSizerWithTextAndButton(CheckboxPage_ChangeLabel,
 189                                                      _T("Change label"),
 190                                                      wxID_ANY,
 191                                                      &m_textLabel),
 192                      0, wxALL | wxGROW, 5);
 193     sizerMiddle->Add(new wxButton(this, CheckboxPage_Check, _T("&Check it")),
 194                      0, wxALL | wxGROW, 5);
 195     sizerMiddle->Add(new wxButton(this, CheckboxPage_Uncheck, _T("&Uncheck it")),
 196                      0, wxALL | wxGROW, 5);
 197     sizerMiddle->Add(new wxButton(this, CheckboxPage_PartCheck,
 198                                   _T("Put in &3rd state")),
 199                      0, wxALL | wxGROW, 5);
 200
 201     // right pane
 202     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 203     m_checkbox = new wxCheckBox(this, CheckboxPage_Checkbox, _T("&Check me!"));
 204     sizerRight->Add(0, 0, 1, wxCENTRE);
 205     sizerRight->Add(m_checkbox, 1, wxCENTRE);
 206     sizerRight->Add(0, 0, 1, wxCENTRE);
 207     sizerRight->SetMinSize(150, 0);
 208     m_sizerCheckbox = sizerRight; // save it to modify it later
 209
 210     // the 3 panes panes compose the window
 211     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 212     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 213     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 214
 215     // final initializations
 216     Reset();
 217
 218     SetSizer(sizerTop);
 219
 220     sizerTop->Fit(this);
 221 }
 222
 223 CheckBoxWidgetsPage::~CheckBoxWidgetsPage()
 224 {
 225 }
 226
 227 void CheckBoxWidgetsPage::Reset()
 228 {
 229     m_chkRight->SetValue(false);
 230     m_radioKind->SetSelection(CheckboxKind_2State);
 231 }
 232
 233 void CheckBoxWidgetsPage::CreateCheckbox()
 234 {
 235     wxString label = m_checkbox->GetLabel();
 236
 237     size_t count = m_sizerCheckbox->GetChildren().GetCount();
 238     for ( size_t n = 0; n < count; n++ )
 239     {
 240         m_sizerCheckbox->Remove(0);
 241     }
 242
 243     delete m_checkbox;
 244
 245     int flags = 0;
 246     if ( m_chkRight->IsChecked() )
 247         flags |= wxALIGN_RIGHT;
 248
 249     switch ( m_radioKind->GetSelection() )
 250     {
 251         default:
 252             wxFAIL_MSG(_T("unexpected radiobox selection"));
 253             // fall through
 254
 255         case CheckboxKind_2State:
 256             flags |= wxCHK_2STATE;
 257             break;
 258
 259         case CheckboxKind_3StateUser:
 260             flags |= wxCHK_ALLOW_3RD_STATE_FOR_USER;
 261             // fall through
 262
 263         case CheckboxKind_3State:
 264             flags |= wxCHK_3STATE;
 265             break;
 266     }
 267
 268     m_checkbox = new wxCheckBox(this, CheckboxPage_Checkbox, label,
 269                               wxDefaultPosition, wxDefaultSize,
 270                               flags);
 271
 272     m_sizerCheckbox->Add(0, 0, 1, wxCENTRE);
 273     m_sizerCheckbox->Add(m_checkbox, 1, wxCENTRE);
 274     m_sizerCheckbox->Add(0, 0, 1, wxCENTRE);
 275     m_sizerCheckbox->Layout();
 276 }
 277
 278 // ----------------------------------------------------------------------------
 279 // event handlers
 280 // ----------------------------------------------------------------------------
 281
 282 void CheckBoxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 283 {
 284     Reset();
 285
 286     CreateCheckbox();
 287 }
 288
 289 void CheckBoxWidgetsPage::OnStyleChange(wxCommandEvent& WXUNUSED(event))
 290 {
 291     CreateCheckbox();
 292 }
 293
 294 void CheckBoxWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 295 {
 296     m_checkbox->SetLabel(m_textLabel->GetValue());
 297 }
 298
 299 void CheckBoxWidgetsPage::OnCheckBox(wxCommandEvent& event)
 300 {
 301     wxLogMessage(_T("Test checkbox %schecked (value = %d)."),
 302                  event.IsChecked() ? _T("") : _T("un"),
 303                  (int)m_checkbox->Get3StateValue());
 304 }
 305