samples/keyboard/keyboard.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        keyboard.cpp
   3 // Purpose:     Keyboard wxWidgets sample
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Marcin Wojdyr
   6 // Created:     07.04.02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17 #ifndef WX_PRECOMP
  18     #include "wx/wx.h"
  19 #endif
  20
  21
  22 // Define a new frame type: this is going to be our main frame
  23 class MyFrame : public wxFrame
  24 {
  25 public:
  26     MyFrame(const wxString& title);
  27
  28 private:
  29     // event handlers
  30     void OnQuit(wxCommandEvent& WXUNUSED(event)) { Close(true); }
  31     void OnAbout(wxCommandEvent& event);
  32     void OnClear(wxCommandEvent& WXUNUSED(event)) { m_logText->Clear(); }
  33     void OnSkip(wxCommandEvent& event) { m_skip = event.IsChecked(); }
  34     void OnKeyDown(wxKeyEvent& event) { LogEvent("KeyDown", event); }
  35     void OnKeyUp(wxKeyEvent& event) { LogEvent("KeyUp", event); }
  36     void OnChar(wxKeyEvent& event) { LogEvent("Char", event); }
  37     void OnPaintInputWin(wxPaintEvent& event);
  38
  39     void LogEvent(const wxString& name, wxKeyEvent& event);
  40
  41     wxTextCtrl *m_logText;
  42     wxWindow *m_inputWin;
  43     bool m_skip;
  44 };
  45
  46
  47 // Define a new application type, each program should derive a class from wxApp
  48 class MyApp : public wxApp
  49 {
  50 public:
  51     // 'Main program' equivalent: the program execution "starts" here
  52     virtual bool OnInit()
  53     {
  54         // create the main application window
  55         new MyFrame("Keyboard wxWidgets App");
  56
  57         // If we returned false here, the application would exit immediately.
  58         return true;
  59     }
  60 };
  61
  62 // Create a new application object: this macro will allow wxWidgets to create
  63 // the application object during program execution (it's better than using a
  64 // static object for many reasons) and also declares the accessor function
  65 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  66 // not wxApp)
  67 IMPLEMENT_APP(MyApp)
  68
  69
  70 // ============================================================================
  71 // implementation
  72 // ============================================================================
  73
  74 // frame constructor
  75 MyFrame::MyFrame(const wxString& title)
  76        : wxFrame(NULL, wxID_ANY, title),
  77          m_inputWin(NULL),
  78          m_skip(true)
  79 {
  80     // IDs for menu items
  81     enum
  82     {
  83         QuitID = wxID_EXIT,
  84         ClearID = wxID_CLEAR,
  85         SkipID = 100,
  86     };
  87
  88     // create a menu bar
  89     wxMenu *menuFile = new wxMenu;
  90
  91     menuFile->Append(ClearID, "&Clear log\tCtrl-L");
  92     menuFile->AppendSeparator();
  93
  94     menuFile->AppendCheckItem(SkipID, "Call event.&Skip()\tCtrl-S");
  95     menuFile->Check(SkipID, true);
  96     menuFile->AppendSeparator();
  97
  98     menuFile->Append(QuitID, "E&xit\tAlt-X", "Quit this program");
  99
 100     // the "About" item should be in the help menu
 101     wxMenu *menuHelp = new wxMenu;
 102     menuHelp->Append(wxID_ABOUT, "&About...\tF1", "Show about dialog");
 103
 104     // now append the freshly created menu to the menu bar...
 105     wxMenuBar *menuBar = new wxMenuBar();
 106     menuBar->Append(menuFile, "&File");
 107     menuBar->Append(menuHelp, "&Help");
 108
 109     // ... and attach this menu bar to the frame
 110     SetMenuBar(menuBar);
 111
 112     m_inputWin = new wxWindow(this, wxID_ANY, wxDefaultPosition, wxSize(-1, 50),
 113                               wxRAISED_BORDER),
 114     m_inputWin->SetBackgroundColour(*wxBLUE);
 115
 116     wxTextCtrl *headerText = new wxTextCtrl(this, wxID_ANY, "",
 117                                             wxDefaultPosition, wxDefaultSize,
 118                                             wxTE_READONLY);
 119     headerText->SetValue(
 120                " event          key     KeyCode mod   UnicodeKey  "
 121                "  RawKeyCode RawKeyFlags");
 122
 123
 124     m_logText = new wxTextCtrl(this, wxID_ANY, "",
 125                                wxDefaultPosition, wxDefaultSize,
 126                                wxTE_MULTILINE|wxTE_READONLY|wxHSCROLL);
 127
 128     // set monospace font to have output in nice columns
 129     wxFont font(10, wxFONTFAMILY_TELETYPE,
 130                 wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
 131     headerText->SetFont(font);
 132     m_logText->SetFont(font);
 133
 134     // layout
 135     wxBoxSizer *sizer = new wxBoxSizer(wxVERTICAL);
 136     sizer->Add(m_inputWin, wxSizerFlags().Expand());
 137     sizer->Add(headerText, wxSizerFlags().Expand());
 138     sizer->Add(m_logText, wxSizerFlags(1).Expand());
 139     SetSizerAndFit(sizer);
 140
 141     // set size and position on screen
 142     SetSize(700, 340);
 143     CentreOnScreen();
 144
 145     // connect menu event handlers
 146
 147     Connect(QuitID, wxEVT_COMMAND_MENU_SELECTED,
 148             wxCommandEventHandler(MyFrame::OnQuit));
 149
 150     Connect(wxID_ABOUT, wxEVT_COMMAND_MENU_SELECTED,
 151             wxCommandEventHandler(MyFrame::OnAbout));
 152
 153     Connect(ClearID, wxEVT_COMMAND_MENU_SELECTED,
 154             wxCommandEventHandler(MyFrame::OnClear));
 155
 156     Connect(SkipID, wxEVT_COMMAND_MENU_SELECTED,
 157             wxCommandEventHandler(MyFrame::OnSkip));
 158
 159     // connect event handlers for the blue input window
 160     m_inputWin->Connect(wxEVT_KEY_DOWN, wxKeyEventHandler(MyFrame::OnKeyDown),
 161                         NULL, this);
 162     m_inputWin->Connect(wxEVT_KEY_UP, wxKeyEventHandler(MyFrame::OnKeyUp),
 163                         NULL, this);
 164     m_inputWin->Connect(wxEVT_CHAR, wxKeyEventHandler(MyFrame::OnChar),
 165                         NULL, this);
 166     m_inputWin->Connect(wxEVT_PAINT,
 167                         wxPaintEventHandler(MyFrame::OnPaintInputWin),
 168                         NULL, this);
 169
 170     // and show itself (the frames, unlike simple controls, are not shown when
 171     // created initially)
 172     Show(true);
 173 }
 174
 175 // event handlers
 176
 177 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 178 {
 179     wxMessageBox("Demonstrates keyboard event processing in wxWidgets\n"
 180                  "(c) 2002 Vadim Zeitlin\n"
 181                  "(c) 2008 Marcin Wojdyr",
 182                  "About wxWidgets Keyboard Sample",
 183                  wxOK | wxICON_INFORMATION, this);
 184 }
 185
 186 void MyFrame::OnPaintInputWin(wxPaintEvent& WXUNUSED(event))
 187 {
 188     wxPaintDC dc(m_inputWin);
 189     dc.SetTextForeground(*wxWHITE);
 190     wxFont font(*wxSWISS_FONT);
 191     font.SetWeight(wxFONTWEIGHT_BOLD);
 192     font.SetPointSize(font.GetPointSize() + 2);
 193     dc.SetFont(font);
 194
 195     dc.DrawLabel("Press keys here",
 196                  m_inputWin->GetClientRect(), wxALIGN_CENTER);
 197 }
 198
 199
 200 // helper function that returns textual description of wx virtual keycode
 201 const char* GetVirtualKeyCodeName(int keycode)
 202 {
 203     switch ( keycode )
 204     {
 205 #define WXK_(x) \
 206         case WXK_##x: return #x;
 207
 208         WXK_(BACK)
 209         WXK_(TAB)
 210         WXK_(RETURN)
 211         WXK_(ESCAPE)
 212         WXK_(SPACE)
 213         WXK_(DELETE)
 214         WXK_(START)
 215         WXK_(LBUTTON)
 216         WXK_(RBUTTON)
 217         WXK_(CANCEL)
 218         WXK_(MBUTTON)
 219         WXK_(CLEAR)
 220         WXK_(SHIFT)
 221         WXK_(ALT)
 222         WXK_(CONTROL)
 223         WXK_(MENU)
 224         WXK_(PAUSE)
 225         WXK_(CAPITAL)
 226         WXK_(END)
 227         WXK_(HOME)
 228         WXK_(LEFT)
 229         WXK_(UP)
 230         WXK_(RIGHT)
 231         WXK_(DOWN)
 232         WXK_(SELECT)
 233         WXK_(PRINT)
 234         WXK_(EXECUTE)
 235         WXK_(SNAPSHOT)
 236         WXK_(INSERT)
 237         WXK_(HELP)
 238         WXK_(NUMPAD0)
 239         WXK_(NUMPAD1)
 240         WXK_(NUMPAD2)
 241         WXK_(NUMPAD3)
 242         WXK_(NUMPAD4)
 243         WXK_(NUMPAD5)
 244         WXK_(NUMPAD6)
 245         WXK_(NUMPAD7)
 246         WXK_(NUMPAD8)
 247         WXK_(NUMPAD9)
 248         WXK_(MULTIPLY)
 249         WXK_(ADD)
 250         WXK_(SEPARATOR)
 251         WXK_(SUBTRACT)
 252         WXK_(DECIMAL)
 253         WXK_(DIVIDE)
 254         WXK_(F1)
 255         WXK_(F2)
 256         WXK_(F3)
 257         WXK_(F4)
 258         WXK_(F5)
 259         WXK_(F6)
 260         WXK_(F7)
 261         WXK_(F8)
 262         WXK_(F9)
 263         WXK_(F10)
 264         WXK_(F11)
 265         WXK_(F12)
 266         WXK_(F13)
 267         WXK_(F14)
 268         WXK_(F15)
 269         WXK_(F16)
 270         WXK_(F17)
 271         WXK_(F18)
 272         WXK_(F19)
 273         WXK_(F20)
 274         WXK_(F21)
 275         WXK_(F22)
 276         WXK_(F23)
 277         WXK_(F24)
 278         WXK_(NUMLOCK)
 279         WXK_(SCROLL)
 280         WXK_(PAGEUP)
 281         WXK_(PAGEDOWN)
 282         WXK_(NUMPAD_SPACE)
 283         WXK_(NUMPAD_TAB)
 284         WXK_(NUMPAD_ENTER)
 285         WXK_(NUMPAD_F1)
 286         WXK_(NUMPAD_F2)
 287         WXK_(NUMPAD_F3)
 288         WXK_(NUMPAD_F4)
 289         WXK_(NUMPAD_HOME)
 290         WXK_(NUMPAD_LEFT)
 291         WXK_(NUMPAD_UP)
 292         WXK_(NUMPAD_RIGHT)
 293         WXK_(NUMPAD_DOWN)
 294         WXK_(NUMPAD_PAGEUP)
 295         WXK_(NUMPAD_PAGEDOWN)
 296         WXK_(NUMPAD_END)
 297         WXK_(NUMPAD_BEGIN)
 298         WXK_(NUMPAD_INSERT)
 299         WXK_(NUMPAD_DELETE)
 300         WXK_(NUMPAD_EQUAL)
 301         WXK_(NUMPAD_MULTIPLY)
 302         WXK_(NUMPAD_ADD)
 303         WXK_(NUMPAD_SEPARATOR)
 304         WXK_(NUMPAD_SUBTRACT)
 305         WXK_(NUMPAD_DECIMAL)
 306         WXK_(NUMPAD_DIVIDE)
 307 #undef WXK_
 308     default:
 309         return NULL;
 310     }
 311 }
 312
 313 // helper function that returns textual description of key in the event
 314 wxString GetKeyName(const wxKeyEvent &event)
 315 {
 316     int keycode = event.GetKeyCode();
 317     const char* virt = GetVirtualKeyCodeName(keycode);
 318     if ( virt )
 319         return virt;
 320     if ( keycode > 0 && keycode < 27 )
 321         return wxString::Format("Ctrl-%c", (unsigned char)('A' + keycode - 1));
 322     if ( keycode >= 27 && keycode < 128 )
 323         return wxString::Format("'%c'", (unsigned char)keycode);
 324 #if wxUSE_UNICODE
 325     return wxString::Format("'%c'", event.GetUnicodeKey());
 326 #else
 327     return "unknown";
 328 #endif
 329 }
 330
 331
 332 void MyFrame::LogEvent(const wxString& name, wxKeyEvent& event)
 333 {
 334     wxString msg;
 335     // event  key_name  KeyCode  modifiers  Unicode  raw_code raw_flags
 336     msg.Printf("%7s %15s %5d   %c%c%c%c"
 337 #if wxUSE_UNICODE
 338                    "%5d (U+%04x)"
 339 #else
 340                    "    none   "
 341 #endif
 342 #ifdef wxHAS_RAW_KEY_CODES
 343                    "  %7lu    0x%lx"
 344 #else
 345                    "  not-set    not-set"
 346 #endif
 347                    "\n",
 348                name,
 349                GetKeyName(event),
 350                event.GetKeyCode(),
 351                event.ControlDown() ? 'C' : '-',
 352                event.AltDown()     ? 'A' : '-',
 353                event.ShiftDown()   ? 'S' : '-',
 354                event.MetaDown()    ? 'M' : '-'
 355 #if wxUSE_UNICODE
 356                , event.GetUnicodeKey()
 357                , event.GetUnicodeKey()
 358 #endif
 359 #ifdef wxHAS_RAW_KEY_CODES
 360                , (unsigned long) event.GetRawKeyCode()
 361                , (unsigned long) event.GetRawKeyFlags()
 362 #endif
 363                );
 364
 365     m_logText->AppendText(msg);
 366
 367     if ( m_skip )
 368         event.Skip();
 369 }
 370
 371