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     ~CheckListBoxFrame();
  52
  53     // notifications
  54     void OnQuit           (wxCommandEvent& event);
  55     void OnAbout          (wxCommandEvent& event);
  56     void OnListboxSelect  (wxCommandEvent& event);
  57     void OnCheckboxToggle (wxCommandEvent& event);
  58     void OnListboxDblClick(wxCommandEvent& event);
  59     void OnButtonUp       (wxCommandEvent& event);
  60     void OnButtonDown     (wxCommandEvent& event);
  61
  62 private:
  63     void OnButtonMove(bool up);
  64
  65     void AdjustColour(size_t index);
  66
  67     wxCheckListBox *m_pListBox;
  68
  69     DECLARE_EVENT_TABLE()
  70 };
  71
  72 enum
  73 {
  74     Menu_Quit = 1,
  75     Control_First = 1000,
  76     Control_Listbox,
  77     Btn_Up,
  78     Btn_Down
  79 };
  80
  81 BEGIN_EVENT_TABLE(CheckListBoxFrame, wxFrame)
  82     EVT_MENU(Menu_Quit, CheckListBoxFrame::OnQuit)
  83
  84     EVT_LISTBOX(Control_Listbox, CheckListBoxFrame::OnListboxSelect)
  85     EVT_CHECKLISTBOX(Control_Listbox, CheckListBoxFrame::OnCheckboxToggle)
  86     EVT_LISTBOX_DCLICK(Control_Listbox, CheckListBoxFrame::OnListboxDblClick)
  87
  88     EVT_BUTTON(Btn_Up, CheckListBoxFrame::OnButtonUp)
  89     EVT_BUTTON(Btn_Down, CheckListBoxFrame::OnButtonDown)
  90 END_EVENT_TABLE()
  91
  92 IMPLEMENT_APP(CheckListBoxApp);
  93
  94 // init our app: create windows
  95 bool CheckListBoxApp::OnInit(void)
  96 {
  97     CheckListBoxFrame *pFrame = new CheckListBoxFrame
  98                                     (
  99                                      NULL,
 100                                      "wxWindows Checklistbox Sample",
 101                                      50, 50, 480, 320
 102                                     );
 103     SetTopWindow(pFrame);
 104
 105     return TRUE;
 106 }
 107
 108 // main frame constructor
 109 CheckListBoxFrame::CheckListBoxFrame(wxFrame *frame,
 110         const char *title,
 111         int x, int y, int w, int h)
 112 : wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 113 {
 114     // create the status line
 115     const int widths[] = { -1, 60 };
 116     CreateStatusBar(2);
 117     SetStatusWidths(2, widths);
 118     wxLogStatus(this, _T("no selection"));
 119
 120     // Make a menubar
 121     wxMenu *file_menu = new wxMenu;
 122
 123     // construct submenu
 124     file_menu->Append(Menu_Quit, "E&xit");
 125
 126     wxMenuBar *menu_bar = new wxMenuBar;
 127     menu_bar->Append(file_menu, "&File");
 128     SetMenuBar(menu_bar);
 129
 130     // make a panel with some controls
 131     wxPanel *panel = new wxPanel(this, -1, wxPoint(0, 0),
 132                                  wxSize(400, 200), wxTAB_TRAVERSAL);
 133
 134     // check list box
 135     static const char* aszChoices[] =
 136     {
 137         "Zeroth",
 138         "First", "Second", "Third",
 139         "Fourth", "Fifth", "Sixth",
 140         "Seventh", "Eighth", "Nineth"
 141     };
 142
 143     wxString *astrChoices = new wxString[WXSIZEOF(aszChoices)];
 144     unsigned int ui;
 145     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui++ )
 146         astrChoices[ui] = aszChoices[ui];
 147
 148     m_pListBox = new wxCheckListBox
 149         (
 150          panel,                 // parent
 151          Control_Listbox,       // control id
 152          wxPoint(10, 10),       // listbox poistion
 153          wxSize(400, 100),      // listbox size
 154          WXSIZEOF(aszChoices),  // number of strings
 155          astrChoices            // array of strings
 156         );
 157
 158     //m_pListBox->SetBackgroundColour(*wxGREEN);
 159
 160     delete [] astrChoices;
 161
 162     // set grey background for every second entry
 163     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui += 2 ) {
 164         AdjustColour(ui);
 165     }
 166
 167     m_pListBox->Check(2);
 168
 169     // create buttons for moving the items around
 170     wxButton *button1 = new wxButton(panel, Btn_Up, "   &Up  ", wxPoint(420, 90));
 171     wxButton *button2 = new wxButton(panel, Btn_Down, "&Down", wxPoint(420, 120));
 172
 173
 174     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 175
 176     mainsizer->Add( m_pListBox, 1, wxGROW|wxALL, 10 );
 177
 178     wxBoxSizer *bottomsizer = new wxBoxSizer( wxHORIZONTAL );
 179
 180     bottomsizer->Add( button1, 0, wxALL, 10 );
 181     bottomsizer->Add( button2, 0, wxALL, 10 );
 182
 183     mainsizer->Add( bottomsizer, 0, wxCENTER );
 184
 185     // tell frame to make use of sizer (or constraints, if any)
 186     panel->SetAutoLayout( TRUE );
 187     panel->SetSizer( mainsizer );
 188
 189     // don't allow frame to get smaller than what the sizers tell ye
 190     mainsizer->SetSizeHints( this );
 191
 192
 193     Show(TRUE);
 194 }
 195
 196 CheckListBoxFrame::~CheckListBoxFrame()
 197 {
 198 }
 199
 200 void CheckListBoxFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 201 {
 202     Close(TRUE);
 203 }
 204
 205 void CheckListBoxFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 206 {
 207     wxMessageBox(wxT("Demo of wxCheckListBox control\n© Vadim Zeitlin 1998-1999"),
 208                  wxT("About wxCheckListBox"),
 209                  wxICON_INFORMATION, this);
 210 }
 211
 212 void CheckListBoxFrame::OnListboxSelect(wxCommandEvent& event)
 213 {
 214     int nSel = event.GetSelection();
 215     wxLogStatus(this, wxT("Item %d selected (%schecked)"), nSel,
 216                       m_pListBox->IsChecked(nSel) ? _T("") : wxT("not "));
 217 }
 218
 219 void CheckListBoxFrame::OnListboxDblClick(wxCommandEvent& WXUNUSED(event))
 220 {
 221     wxString strSelection;
 222     strSelection.sprintf(wxT("Item %d double clicked"), m_pListBox->GetSelection());
 223     wxMessageDialog dialog(this, strSelection, wxT("wxCheckListBox message"), wxICON_INFORMATION);
 224     dialog.ShowModal();
 225 }
 226
 227 void CheckListBoxFrame::OnCheckboxToggle(wxCommandEvent& event)
 228 {
 229     unsigned int nItem = event.GetInt();
 230
 231     wxLogStatus(this, wxT("item %d was %schecked"), nItem,
 232                       m_pListBox->IsChecked(nItem) ? wxT("") : wxT("un"));
 233 }
 234
 235 void CheckListBoxFrame::OnButtonUp(wxCommandEvent& WXUNUSED(event))
 236 {
 237     OnButtonMove(TRUE);
 238 }
 239
 240 void CheckListBoxFrame::OnButtonDown(wxCommandEvent& WXUNUSED(event))
 241 {
 242     OnButtonMove(FALSE);
 243 }
 244
 245 void CheckListBoxFrame::OnButtonMove(bool up)
 246 {
 247     int selection = m_pListBox->GetSelection();
 248     if ( selection != -1 )
 249     {
 250         wxString label = m_pListBox->GetString(selection);
 251
 252         int positionNew = up ? selection - 1 : selection + 2;
 253         if ( positionNew < 0 || positionNew > m_pListBox->GetCount() )
 254         {
 255             wxLogStatus(this, wxT("Can't move this item %s"), up ? wxT("up") : wxT("down"));
 256         }
 257         else
 258         {
 259             bool wasChecked = m_pListBox->IsChecked(selection);
 260
 261             int positionOld = up ? selection + 1 : selection;
 262
 263             // insert the item
 264             m_pListBox->InsertItems(1, &label, positionNew);
 265
 266             // and delete the old one
 267             m_pListBox->Delete(positionOld);
 268
 269             int selectionNew = up ? positionNew : positionNew - 1;
 270             m_pListBox->Check(selectionNew, wasChecked);
 271             m_pListBox->SetSelection(selectionNew);
 272
 273             AdjustColour(selection);
 274             AdjustColour(selectionNew);
 275
 276             wxLogStatus(this, wxT("Item moved %s"), up ? wxT("up") : wxT("down"));
 277         }
 278     }
 279     else
 280     {
 281         wxLogStatus(this, wxT("Please select an item"));
 282     }
 283 }
 284
 285 void CheckListBoxFrame::AdjustColour(size_t index)
 286 {
 287     // not implemented in other ports yet
 288 #ifdef __WXMSW__
 289     // even items have grey backround, odd ones - white
 290     unsigned char c = index % 2 ? 255 : 200;
 291     m_pListBox->GetItem(index)->SetBackgroundColour(wxColor(c, c, c));
 292 #endif // wxMSW
 293 }