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     #include "wx/radiobox.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38
  39     #include "wx/sizer.h"
  40 #endif
  41
  42 #include "widgets.h"
  43
  44 #include "icons/checkbox.xpm"
  45
  46 // ----------------------------------------------------------------------------
  47 // constants
  48 // ----------------------------------------------------------------------------
  49
  50 // control ids
  51 enum
  52 {
  53     CheckboxPage_Reset = 100,
  54     CheckboxPage_ChangeLabel,
  55     CheckboxPage_Check,
  56     CheckboxPage_Uncheck,
  57     CheckboxPage_PartCheck,
  58     CheckboxPage_ChkRight,
  59     CheckboxPage_Checkbox
  60 };
  61
  62 enum
  63 {
  64     CheckboxKind_2State,
  65     CheckboxKind_3State,
  66     CheckboxKind_3StateUser
  67 };
  68
  69 // ----------------------------------------------------------------------------
  70 // CheckBoxWidgetsPage
  71 // ----------------------------------------------------------------------------
  72
  73 class CheckBoxWidgetsPage : public WidgetsPage
  74 {
  75 public:
  76     CheckBoxWidgetsPage(wxBookCtrl *book, wxImageList *imaglist);
  77     virtual ~CheckBoxWidgetsPage(){};
  78
  79     virtual wxControl *GetWidget() const { return m_checkbox; }
  80
  81 protected:
  82     // event handlers
  83     void OnCheckBox(wxCommandEvent& event);
  84
  85     void OnStyleChange(wxCommandEvent& event);
  86     void OnButtonReset(wxCommandEvent& event);
  87     void OnButtonChangeLabel(wxCommandEvent& event);
  88
  89     void OnButtonCheck(wxCommandEvent&) { m_checkbox->SetValue(true); }
  90     void OnButtonUncheck(wxCommandEvent&) { m_checkbox->SetValue(false); }
  91     void OnButtonPartCheck(wxCommandEvent&)
  92     {
  93         m_checkbox->Set3StateValue(wxCHK_UNDETERMINED);
  94     }
  95
  96     void Is3State(wxUpdateUIEvent& event)
  97     {
  98         event.Enable( m_checkbox->Is3State() );
  99     }
 100
 101
 102     // reset the wxCheckBox parameters
 103     void Reset();
 104
 105     // (re)create the wxCheckBox
 106     void CreateCheckbox();
 107
 108     // the controls
 109     // ------------
 110
 111     // the contols to choose the checkbox style
 112     wxCheckBox *m_chkRight;
 113     wxRadioBox *m_radioKind;
 114
 115     // the checkbox itself and the sizer it is in
 116     wxCheckBox *m_checkbox;
 117     wxSizer *m_sizerCheckbox;
 118
 119     // the text entries for command parameters
 120     wxTextCtrl *m_textLabel;
 121
 122 private:
 123     DECLARE_EVENT_TABLE()
 124     DECLARE_WIDGETS_PAGE(CheckBoxWidgetsPage)
 125 };
 126
 127 // ----------------------------------------------------------------------------
 128 // event tables
 129 // ----------------------------------------------------------------------------
 130
 131 BEGIN_EVENT_TABLE(CheckBoxWidgetsPage, WidgetsPage)
 132     EVT_CHECKBOX(CheckboxPage_Checkbox, CheckBoxWidgetsPage::OnCheckBox)
 133
 134     EVT_BUTTON(CheckboxPage_Reset, CheckBoxWidgetsPage::OnButtonReset)
 135     EVT_BUTTON(CheckboxPage_ChangeLabel, CheckBoxWidgetsPage::OnButtonChangeLabel)
 136     EVT_BUTTON(CheckboxPage_Check, CheckBoxWidgetsPage::OnButtonCheck)
 137     EVT_BUTTON(CheckboxPage_Uncheck, CheckBoxWidgetsPage::OnButtonUncheck)
 138     EVT_BUTTON(CheckboxPage_PartCheck, CheckBoxWidgetsPage::OnButtonPartCheck)
 139
 140     EVT_UPDATE_UI(CheckboxPage_PartCheck, CheckBoxWidgetsPage::Is3State)
 141
 142     EVT_RADIOBOX(wxID_ANY, CheckBoxWidgetsPage::OnStyleChange)
 143     EVT_CHECKBOX(CheckboxPage_ChkRight, CheckBoxWidgetsPage::OnStyleChange)
 144 END_EVENT_TABLE()
 145
 146 // ============================================================================
 147 // implementation
 148 // ============================================================================
 149
 150 IMPLEMENT_WIDGETS_PAGE(CheckBoxWidgetsPage, wxT("CheckBox"));
 151
 152 CheckBoxWidgetsPage::CheckBoxWidgetsPage(wxBookCtrl *book,
 153                                          wxImageList *imaglist)
 154                   : WidgetsPage(book)
 155 {
 156     imaglist->Add(wxBitmap(checkbox_xpm));
 157
 158     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 159
 160     // left pane
 161     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 162
 163     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 164
 165     m_chkRight = CreateCheckBoxAndAddToSizer
 166                  (
 167                     sizerLeft,
 168                     _T("&Right aligned"),
 169                     CheckboxPage_ChkRight
 170                  );
 171
 172     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 173
 174     static const wxString kinds[] =
 175     {
 176         _T("usual &2-state checkbox"),
 177         _T("&3rd state settable by program"),
 178         _T("&user-settable 3rd state"),
 179     };
 180
 181     m_radioKind = new wxRadioBox(this, wxID_ANY, _T("&Kind"),
 182                                  wxDefaultPosition, wxDefaultSize,
 183                                  WXSIZEOF(kinds), kinds,
 184                                  1);
 185     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 186     wxButton *btn = new wxButton(this, CheckboxPage_Reset, _T("&Reset"));
 187     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 188
 189     // middle pane
 190     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 191     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 192
 193     sizerMiddle->Add(CreateSizerWithTextAndButton(CheckboxPage_ChangeLabel,
 194                                                      _T("Change label"),
 195                                                      wxID_ANY,
 196                                                      &m_textLabel),
 197                      0, wxALL | wxGROW, 5);
 198     sizerMiddle->Add(new wxButton(this, CheckboxPage_Check, _T("&Check it")),
 199                      0, wxALL | wxGROW, 5);
 200     sizerMiddle->Add(new wxButton(this, CheckboxPage_Uncheck, _T("&Uncheck it")),
 201                      0, wxALL | wxGROW, 5);
 202     sizerMiddle->Add(new wxButton(this, CheckboxPage_PartCheck,
 203                                   _T("Put in &3rd state")),
 204                      0, wxALL | wxGROW, 5);
 205
 206     // right pane
 207     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 208     m_checkbox = new wxCheckBox(this, CheckboxPage_Checkbox, _T("&Check me!"));
 209     sizerRight->Add(0, 0, 1, wxCENTRE);
 210     sizerRight->Add(m_checkbox, 1, wxCENTRE);
 211     sizerRight->Add(0, 0, 1, wxCENTRE);
 212     sizerRight->SetMinSize(150, 0);
 213     m_sizerCheckbox = sizerRight; // save it to modify it later
 214
 215     // the 3 panes panes compose the window
 216     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 217     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 218     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 219
 220     // final initializations
 221     Reset();
 222
 223     SetSizer(sizerTop);
 224
 225     sizerTop->Fit(this);
 226 }
 227
 228 void CheckBoxWidgetsPage::Reset()
 229 {
 230     m_chkRight->SetValue(false);
 231     m_radioKind->SetSelection(CheckboxKind_2State);
 232 }
 233
 234 void CheckBoxWidgetsPage::CreateCheckbox()
 235 {
 236     wxString label = m_checkbox->GetLabel();
 237
 238     size_t count = m_sizerCheckbox->GetChildren().GetCount();
 239     for ( size_t n = 0; n < count; n++ )
 240     {
 241         m_sizerCheckbox->Remove(0);
 242     }
 243
 244     delete m_checkbox;
 245
 246     int flags = 0;
 247     if ( m_chkRight->IsChecked() )
 248         flags |= wxALIGN_RIGHT;
 249
 250     switch ( m_radioKind->GetSelection() )
 251     {
 252         default:
 253             wxFAIL_MSG(_T("unexpected radiobox selection"));
 254             // fall through
 255
 256         case CheckboxKind_2State:
 257             flags |= wxCHK_2STATE;
 258             break;
 259
 260         case CheckboxKind_3StateUser:
 261             flags |= wxCHK_ALLOW_3RD_STATE_FOR_USER;
 262             // fall through
 263
 264         case CheckboxKind_3State:
 265             flags |= wxCHK_3STATE;
 266             break;
 267     }
 268
 269     m_checkbox = new wxCheckBox(this, CheckboxPage_Checkbox, label,
 270                               wxDefaultPosition, wxDefaultSize,
 271                               flags);
 272
 273     m_sizerCheckbox->Add(0, 0, 1, wxCENTRE);
 274     m_sizerCheckbox->Add(m_checkbox, 1, wxCENTRE);
 275     m_sizerCheckbox->Add(0, 0, 1, wxCENTRE);
 276     m_sizerCheckbox->Layout();
 277 }
 278
 279 // ----------------------------------------------------------------------------
 280 // event handlers
 281 // ----------------------------------------------------------------------------
 282
 283 void CheckBoxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 284 {
 285     Reset();
 286
 287     CreateCheckbox();
 288 }
 289
 290 void CheckBoxWidgetsPage::OnStyleChange(wxCommandEvent& WXUNUSED(event))
 291 {
 292     CreateCheckbox();
 293 }
 294
 295 void CheckBoxWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 296 {
 297     m_checkbox->SetLabel(m_textLabel->GetValue());
 298 }
 299
 300 void CheckBoxWidgetsPage::OnCheckBox(wxCommandEvent& event)
 301 {
 302     wxLogMessage(_T("Test checkbox %schecked (value = %d)."),
 303                  event.IsChecked() ? _T("") : _T("un"),
 304                  (int)m_checkbox->Get3StateValue());
 305 }
 306