samples/checklst/checklst.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        checklst.cpp
   3 // Purpose:     wxCheckListBox sample
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13.11.97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     //#pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #ifdef __WXMSW__
  28     #include  "wx/ownerdrw.h"
  29 #endif
  30
  31 #include  "wx/log.h"
  32
  33 #include  "wx/sizer.h"
  34 #include  "wx/menuitem.h"
  35 #include  "wx/checklst.h"
  36
  37 // Define a new application type
  38 class CheckListBoxApp: public wxApp
  39 {
  40 public:
  41     bool OnInit();
  42 };
  43
  44 // Define a new frame type
  45 class CheckListBoxFrame : public wxFrame
  46 {
  47 public:
  48     // ctor & dtor
  49     CheckListBoxFrame(wxFrame *frame, const char *title,
  50                       int x, int y, int w, int h);
  51     virtual ~CheckListBoxFrame();
  52
  53     // notifications
  54     void OnQuit           (wxCommandEvent& event);
  55     void OnAbout          (wxCommandEvent& event);
  56     void OnToggleSelection(wxCommandEvent& event);
  57     void OnListboxSelect  (wxCommandEvent& event);
  58     void OnCheckboxToggle (wxCommandEvent& event);
  59     void OnListboxDblClick(wxCommandEvent& event);
  60     void OnButtonUp       (wxCommandEvent& event);
  61     void OnButtonDown     (wxCommandEvent& event);
  62
  63 private:
  64     void CreateCheckListbox(long flags = 0);
  65
  66     void OnButtonMove(bool up);
  67
  68     void AdjustColour(size_t index);
  69
  70     wxPanel *m_panel;
  71
  72     wxCheckListBox *m_pListBox;
  73
  74     DECLARE_EVENT_TABLE()
  75 };
  76
  77 enum
  78 {
  79     Menu_About = 100,
  80     Menu_Quit,
  81     Menu_Selection,
  82
  83     Control_First = 1000,
  84     Control_Listbox,
  85     Btn_Up,
  86     Btn_Down
  87 };
  88
  89 BEGIN_EVENT_TABLE(CheckListBoxFrame, wxFrame)
  90     EVT_MENU(Menu_About, CheckListBoxFrame::OnAbout)
  91     EVT_MENU(Menu_Quit, CheckListBoxFrame::OnQuit)
  92
  93     EVT_MENU(Menu_Selection, CheckListBoxFrame::OnToggleSelection)
  94
  95     EVT_LISTBOX(Control_Listbox, CheckListBoxFrame::OnListboxSelect)
  96     EVT_CHECKLISTBOX(Control_Listbox, CheckListBoxFrame::OnCheckboxToggle)
  97     EVT_LISTBOX_DCLICK(Control_Listbox, CheckListBoxFrame::OnListboxDblClick)
  98
  99     EVT_BUTTON(Btn_Up, CheckListBoxFrame::OnButtonUp)
 100     EVT_BUTTON(Btn_Down, CheckListBoxFrame::OnButtonDown)
 101 END_EVENT_TABLE()
 102
 103 IMPLEMENT_APP(CheckListBoxApp);
 104
 105 // init our app: create windows
 106 bool CheckListBoxApp::OnInit(void)
 107 {
 108     CheckListBoxFrame *pFrame = new CheckListBoxFrame
 109                                     (
 110                                      NULL,
 111                                      _T("wxWindows Checklistbox Sample"),
 112                                      50, 50, 480, 320
 113                                     );
 114     SetTopWindow(pFrame);
 115
 116     return TRUE;
 117 }
 118
 119 // main frame constructor
 120 CheckListBoxFrame::CheckListBoxFrame(wxFrame *frame,
 121                                      const wxChar *title,
 122                                      int x, int y, int w, int h)
 123                  : wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 124 {
 125     // create the status line
 126     const int widths[] = { -1, 60 };
 127     CreateStatusBar(2);
 128     SetStatusWidths(2, widths);
 129     wxLogStatus(this, _T("no selection"));
 130
 131     // Make a menubar
 132     // --------------
 133
 134     // file submenu
 135     wxMenu *menuFile = new wxMenu;
 136     menuFile->Append(Menu_About, _T("&About...\tF1"));
 137     menuFile->AppendSeparator();
 138     menuFile->Append(Menu_Quit, _T("E&xit\tAlt-X"));
 139
 140     // listbox submenu
 141     wxMenu *menuList = new wxMenu;
 142     menuList->AppendCheckItem(Menu_Selection, _T("Multiple selection\tCtrl-M"));
 143
 144     // put it all together
 145     wxMenuBar *menu_bar = new wxMenuBar;
 146     menu_bar->Append(menuFile, _T("&File"));
 147     menu_bar->Append(menuList, _T("&List"));
 148     SetMenuBar(menu_bar);
 149
 150     // make a panel with some controls
 151     m_panel = new wxPanel(this, -1, wxPoint(0, 0),
 152                           wxSize(400, 200), wxTAB_TRAVERSAL);
 153
 154     CreateCheckListbox();
 155
 156     // create buttons for moving the items around
 157     wxButton *button1 = new wxButton(m_panel, Btn_Up, _T("   &Up  "), wxPoint(420, 90));
 158     wxButton *button2 = new wxButton(m_panel, Btn_Down, _T("&Down"), wxPoint(420, 120));
 159
 160
 161     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 162
 163     mainsizer->Add( m_pListBox, 1, wxGROW|wxALL, 10 );
 164
 165     wxBoxSizer *bottomsizer = new wxBoxSizer( wxHORIZONTAL );
 166
 167     bottomsizer->Add( button1, 0, wxALL, 10 );
 168     bottomsizer->Add( button2, 0, wxALL, 10 );
 169
 170     mainsizer->Add( bottomsizer, 0, wxCENTER );
 171
 172     // tell frame to make use of sizer (or constraints, if any)
 173     m_panel->SetAutoLayout( TRUE );
 174     m_panel->SetSizer( mainsizer );
 175
 176     // don't allow frame to get smaller than what the sizers tell ye
 177     mainsizer->SetSizeHints( this );
 178
 179     Show(TRUE);
 180 }
 181
 182 void CheckListBoxFrame::CreateCheckListbox(long flags)
 183 {
 184     // check list box
 185     static const wxChar *aszChoices[] =
 186     {
 187         _T("Zeroth"),
 188         _T("First"), _T("Second"), _T("Third"),
 189         _T("Fourth"), _T("Fifth"), _T("Sixth"),
 190         _T("Seventh"), _T("Eighth"), _T("Nineth")
 191     };
 192
 193     wxString *astrChoices = new wxString[WXSIZEOF(aszChoices)];
 194     unsigned int ui;
 195     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui++ )
 196         astrChoices[ui] = aszChoices[ui];
 197
 198     m_pListBox = new wxCheckListBox
 199         (
 200          m_panel,               // parent
 201          Control_Listbox,       // control id
 202          wxPoint(10, 10),       // listbox poistion
 203          wxSize(400, 100),      // listbox size
 204          WXSIZEOF(aszChoices),  // number of strings
 205          astrChoices,           // array of strings
 206          flags
 207         );
 208
 209     //m_pListBox->SetBackgroundColour(*wxGREEN);
 210
 211     delete [] astrChoices;
 212
 213     // set grey background for every second entry
 214     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui += 2 ) {
 215         AdjustColour(ui);
 216     }
 217
 218     m_pListBox->Check(2);
 219     m_pListBox->Select(3);
 220 }
 221
 222 CheckListBoxFrame::~CheckListBoxFrame()
 223 {
 224 }
 225
 226 void CheckListBoxFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 227 {
 228     Close(TRUE);
 229 }
 230
 231 void CheckListBoxFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 232 {
 233     wxMessageBox(wxT("Demo of wxCheckListBox control\n© Vadim Zeitlin 1998-2002"),
 234                  wxT("About wxCheckListBox"),
 235                  wxICON_INFORMATION, this);
 236 }
 237
 238 void CheckListBoxFrame::OnToggleSelection(wxCommandEvent& event)
 239 {
 240     wxSizer *sizer = m_panel->GetSizer();
 241
 242     sizer->Remove(m_pListBox);
 243     delete m_pListBox;
 244
 245     CreateCheckListbox(event.IsChecked() ? wxLB_EXTENDED : 0);
 246
 247     sizer->Insert(0, m_pListBox, 1, wxGROW | wxALL, 10);
 248
 249     m_panel->Layout();
 250 }
 251
 252 void CheckListBoxFrame::OnListboxSelect(wxCommandEvent& event)
 253 {
 254     int nSel = event.GetSelection();
 255     wxLogStatus(this, wxT("Item %d selected (%schecked)"), nSel,
 256                       m_pListBox->IsChecked(nSel) ? _T("") : wxT("not "));
 257 }
 258
 259 void CheckListBoxFrame::OnListboxDblClick(wxCommandEvent& WXUNUSED(event))
 260 {
 261     wxString strSelection;
 262     strSelection.sprintf(wxT("Item %d double clicked"), m_pListBox->GetSelection());
 263     wxMessageDialog dialog(this, strSelection, wxT("wxCheckListBox message"), wxICON_INFORMATION);
 264     dialog.ShowModal();
 265 }
 266
 267 void CheckListBoxFrame::OnCheckboxToggle(wxCommandEvent& event)
 268 {
 269     unsigned int nItem = event.GetInt();
 270
 271     wxLogStatus(this, wxT("item %d was %schecked"), nItem,
 272                       m_pListBox->IsChecked(nItem) ? wxT("") : wxT("un"));
 273 }
 274
 275 void CheckListBoxFrame::OnButtonUp(wxCommandEvent& WXUNUSED(event))
 276 {
 277     OnButtonMove(TRUE);
 278 }
 279
 280 void CheckListBoxFrame::OnButtonDown(wxCommandEvent& WXUNUSED(event))
 281 {
 282     OnButtonMove(FALSE);
 283 }
 284
 285 void CheckListBoxFrame::OnButtonMove(bool up)
 286 {
 287     int selection = m_pListBox->GetSelection();
 288     if ( selection != -1 )
 289     {
 290         wxString label = m_pListBox->GetString(selection);
 291
 292         int positionNew = up ? selection - 1 : selection + 2;
 293         if ( positionNew < 0 || positionNew > m_pListBox->GetCount() )
 294         {
 295             wxLogStatus(this, wxT("Can't move this item %s"), up ? wxT("up") : wxT("down"));
 296         }
 297         else
 298         {
 299             bool wasChecked = m_pListBox->IsChecked(selection);
 300
 301             int positionOld = up ? selection + 1 : selection;
 302
 303             // insert the item
 304             m_pListBox->InsertItems(1, &label, positionNew);
 305
 306             // and delete the old one
 307             m_pListBox->Delete(positionOld);
 308
 309             int selectionNew = up ? positionNew : positionNew - 1;
 310             m_pListBox->Check(selectionNew, wasChecked);
 311             m_pListBox->SetSelection(selectionNew);
 312
 313             AdjustColour(selection);
 314             AdjustColour(selectionNew);
 315
 316             wxLogStatus(this, wxT("Item moved %s"), up ? wxT("up") : wxT("down"));
 317         }
 318     }
 319     else
 320     {
 321         wxLogStatus(this, wxT("Please select an item"));
 322     }
 323 }
 324
 325 void CheckListBoxFrame::AdjustColour(size_t index)
 326 {
 327     // not implemented in other ports yet
 328 #ifdef __WXMSW__
 329     // even items have grey backround, odd ones - white
 330     unsigned char c = index % 2 ? 255 : 200;
 331     m_pListBox->GetItem(index)->SetBackgroundColour(wxColor(c, c, c));
 332 #endif // wxMSW
 333 }