samples/display/display.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        display.cpp
   3 // Purpose:     wxWidgets sample showing the features of wxDisplay class
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Ryan Norton & Brian Victor
   6 // Created:     23.02.03
   7 // Copyright:   (c) Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx/wx.h"
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 // for all others, include the necessary headers explicitly
  27 #ifndef WX_PRECOMP
  28     #include "wx/wx.h"
  29 #endif
  30
  31 #include "wx/bookctrl.h"
  32 #include "wx/sysopt.h"
  33
  34 #include "wx/display.h"
  35
  36
  37 // the application icon (under Windows and OS/2 it is in resources)
  38 #ifndef wxHAS_IMAGES_IN_RESOURCES
  39     #include "../sample.xpm"
  40 #endif
  41
  42 // ----------------------------------------------------------------------------
  43 // private classes
  44 // ----------------------------------------------------------------------------
  45
  46 // Define a new application type, each program should derive a class from wxApp
  47 class MyApp : public wxApp
  48 {
  49 public:
  50     // override base class virtuals
  51     // ----------------------------
  52
  53     // this one is called on application startup and is a good place for the app
  54     // initialization (doing it here and not in the ctor allows to have an error
  55     // return: if OnInit() returns false, the application terminates)
  56     virtual bool OnInit();
  57 };
  58
  59 // Define a new frame type: this is going to be our main frame
  60 class MyFrame : public wxFrame
  61 {
  62 public:
  63     // ctor(s)
  64     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size,
  65             long style = wxDEFAULT_FRAME_STYLE);
  66
  67     // event handlers (these functions should _not_ be virtual)
  68     void OnQuit(wxCommandEvent& event);
  69     void OnFromPoint(wxCommandEvent& event);
  70     void OnFullScreen(wxCommandEvent& event);
  71     void OnAbout(wxCommandEvent& event);
  72
  73 #if wxUSE_DISPLAY
  74     void OnChangeMode(wxCommandEvent& event);
  75     void OnResetMode(wxCommandEvent& event);
  76
  77     void OnDisplayChanged(wxDisplayChangedEvent& event);
  78 #endif // wxUSE_DISPLAY
  79
  80     void OnLeftClick(wxMouseEvent& event);
  81
  82 private:
  83 #if wxUSE_DISPLAY
  84     // convert video mode to textual description
  85     wxString VideoModeToText(const wxVideoMode& mode);
  86 #endif // wxUSE_DISPLAY
  87
  88     // GUI controls
  89     wxBookCtrl *m_book;
  90
  91     // any class wishing to process wxWidgets events must use this macro
  92     DECLARE_EVENT_TABLE()
  93 };
  94
  95 // Client data class for the choice control containing the video modes
  96 class MyVideoModeClientData : public wxClientData
  97 {
  98 public:
  99     MyVideoModeClientData(const wxVideoMode& m) : mode(m) { }
 100
 101     const wxVideoMode mode;
 102 };
 103
 104 // ----------------------------------------------------------------------------
 105 // constants
 106 // ----------------------------------------------------------------------------
 107
 108 // IDs for the controls and the menu commands
 109 enum
 110 {
 111     // menu items
 112     Display_FromPoint = wxID_HIGHEST + 1,
 113     Display_FullScreen,
 114
 115     // controls
 116     Display_ChangeMode,
 117     Display_ResetMode,
 118     Display_CurrentMode,
 119
 120
 121     // it is important for the id corresponding to the "About" command to have
 122     // this standard value as otherwise it won't be handled properly under Mac
 123     // (where it is special and put into the "Apple" menu)
 124     Display_Quit = wxID_EXIT,
 125     Display_About = wxID_ABOUT
 126 };
 127
 128 // ----------------------------------------------------------------------------
 129 // event tables and other macros for wxWidgets
 130 // ----------------------------------------------------------------------------
 131
 132 // the event tables connect the wxWidgets events with the functions (event
 133 // handlers) which process them. It can be also done at run-time, but for the
 134 // simple menu events like this the static method is much simpler.
 135 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 136     EVT_MENU(Display_Quit,  MyFrame::OnQuit)
 137     EVT_MENU(Display_FromPoint,  MyFrame::OnFromPoint)
 138     EVT_MENU(Display_FullScreen, MyFrame::OnFullScreen)
 139     EVT_MENU(Display_About, MyFrame::OnAbout)
 140
 141 #if wxUSE_DISPLAY
 142     EVT_CHOICE(Display_ChangeMode, MyFrame::OnChangeMode)
 143     EVT_BUTTON(Display_ResetMode, MyFrame::OnResetMode)
 144
 145     EVT_DISPLAY_CHANGED(MyFrame::OnDisplayChanged)
 146 #endif // wxUSE_DISPLAY
 147
 148     EVT_LEFT_UP(MyFrame::OnLeftClick)
 149 END_EVENT_TABLE()
 150
 151 // Create a new application object: this macro will allow wxWidgets to create
 152 // the application object during program execution (it's better than using a
 153 // static object for many reasons) and also declares the accessor function
 154 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 155 // not wxApp)
 156 IMPLEMENT_APP(MyApp)
 157
 158 // ============================================================================
 159 // implementation
 160 // ============================================================================
 161
 162 // ----------------------------------------------------------------------------
 163 // the application class
 164 // ----------------------------------------------------------------------------
 165
 166 // 'Main program' equivalent: the program execution "starts" here
 167 bool MyApp::OnInit()
 168 {
 169     if ( !wxApp::OnInit() )
 170         return false;
 171
 172 #ifdef __WXMSW__
 173     if ( argc == 2 && !wxStricmp(argv[1],  wxT("/dx")) )
 174     {
 175         wxSystemOptions::SetOption(wxT("msw.display.directdraw"), 1);
 176     }
 177 #endif // __WXMSW__
 178
 179     // create the main application window
 180     MyFrame *frame = new MyFrame(_("Display wxWidgets Sample"),
 181                                  wxDefaultPosition, wxDefaultSize);
 182
 183     // and show it (the frames, unlike simple controls, are not shown when
 184     // created initially)
 185     frame->Show();
 186
 187     // success: wxApp::OnRun() will be called which will enter the main message
 188     // loop and the application will run. If we returned false here, the
 189     // application would exit immediately.
 190     return true;
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // main frame
 195 // ----------------------------------------------------------------------------
 196
 197 // frame constructor
 198 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
 199        : wxFrame(NULL, wxID_ANY, title, pos, size, style)
 200 {
 201     // set the frame icon
 202     SetIcon(wxICON(sample));
 203
 204 #if wxUSE_MENUS
 205     // create a menu bar
 206     wxMenu *menuDisplay = new wxMenu;
 207     menuDisplay->Append(Display_FromPoint, _("Find from &point..."));
 208     menuDisplay->AppendSeparator();
 209     menuDisplay->AppendCheckItem(Display_FullScreen, _("Full &screen\tF12"));
 210     menuDisplay->AppendSeparator();
 211     menuDisplay->Append(Display_Quit, _("E&xit\tAlt-X"), _("Quit this program"));
 212
 213     // the "About" item should be in the help menu
 214     wxMenu *helpMenu = new wxMenu;
 215     helpMenu->Append(Display_About, _("&About\tF1"), _("Show about dialog"));
 216
 217     // now append the freshly created menu to the menu bar...
 218     wxMenuBar *menuBar = new wxMenuBar();
 219     menuBar->Append(menuDisplay, _("&Display"));
 220     menuBar->Append(helpMenu, _("&Help"));
 221
 222     // ... and attach this menu bar to the frame
 223     SetMenuBar(menuBar);
 224 #endif // wxUSE_MENUS
 225
 226 #if wxUSE_STATUSBAR
 227     // create status bar
 228     CreateStatusBar();
 229 #endif // wxUSE_STATUSBAR
 230
 231     // create child controls
 232     wxPanel *panel = new wxPanel(this, wxID_ANY);
 233
 234     m_book = new wxBookCtrl(panel, wxID_ANY);
 235     const size_t count = wxDisplay::GetCount();
 236     for ( size_t nDpy = 0; nDpy < count; nDpy++ )
 237     {
 238         wxDisplay display(nDpy);
 239
 240         wxWindow *page = new wxPanel(m_book, wxID_ANY);
 241
 242         // create 2 column flex grid sizer with growable 2nd column
 243         wxFlexGridSizer *sizer = new wxFlexGridSizer(2, 10, 20);
 244         sizer->AddGrowableCol(1);
 245
 246         const wxRect r(display.GetGeometry());
 247         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Origin: ")));
 248         sizer->Add(new wxStaticText
 249                        (
 250                         page,
 251                         wxID_ANY,
 252                         wxString::Format(wxT("(%d, %d)"),
 253                                          r.x, r.y)
 254                        ));
 255
 256         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Size: ")));
 257         sizer->Add(new wxStaticText
 258                        (
 259                         page,
 260                         wxID_ANY,
 261                         wxString::Format(wxT("(%d, %d)"),
 262                                          r.width, r.height)
 263                        ));
 264
 265         const wxRect rc(display.GetClientArea());
 266         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Client area: ")));
 267         sizer->Add(new wxStaticText
 268                        (
 269                         page,
 270                         wxID_ANY,
 271                         wxString::Format(wxT("(%d, %d)-(%d, %d)"),
 272                                          rc.x, rc.y, rc.width, rc.height)
 273                        ));
 274
 275         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Name: ")));
 276         sizer->Add(new wxStaticText(page, wxID_ANY, display.GetName()));
 277
 278         wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 279         sizerTop->Add(sizer, 1, wxALL | wxEXPAND, 10);
 280
 281 #if wxUSE_DISPLAY
 282         wxChoice *choiceModes = new wxChoice(page, Display_ChangeMode);
 283         const wxArrayVideoModes modes = display.GetModes();
 284         const size_t count = modes.GetCount();
 285         for ( size_t nMode = 0; nMode < count; nMode++ )
 286         {
 287             const wxVideoMode& mode = modes[nMode];
 288
 289             choiceModes->Append(VideoModeToText(mode),
 290                                 new MyVideoModeClientData(mode));
 291         }
 292
 293         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("&Modes: ")));
 294         sizer->Add(choiceModes, 0, wxEXPAND);
 295
 296         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Current: ")));
 297         sizer->Add(new wxStaticText(page, Display_CurrentMode,
 298                                     VideoModeToText(display.GetCurrentMode())));
 299
 300         // add it to another sizer to have borders around it and button below
 301         sizerTop->Add(new wxButton(page, Display_ResetMode, wxT("&Reset mode")),
 302                       0, wxALL | wxCENTRE, 5);
 303 #endif // wxUSE_DISPLAY
 304
 305         page->SetSizer(sizerTop);
 306
 307         m_book->AddPage(page,
 308                         wxString::Format(wxT("Display %lu"),
 309                                          (unsigned long)nDpy));
 310     }
 311
 312     wxBoxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
 313     sizer->Add(m_book, 1, wxEXPAND);
 314     panel->SetSizer(sizer);
 315     sizer->SetSizeHints(this);
 316 }
 317
 318 #if wxUSE_DISPLAY
 319
 320 wxString MyFrame::VideoModeToText(const wxVideoMode& mode)
 321 {
 322     wxString s;
 323     s.Printf(wxT("%dx%d"), mode.w, mode.h);
 324
 325     if ( mode.bpp )
 326     {
 327         s += wxString::Format(wxT(", %dbpp"), mode.bpp);
 328     }
 329
 330     if ( mode.refresh )
 331     {
 332         s += wxString::Format(wxT(", %dHz"), mode.refresh);
 333     }
 334
 335     return s;
 336 }
 337
 338 #endif // wxUSE_DISPLAY
 339
 340 // event handlers
 341
 342 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 343 {
 344     // true is to force the frame to close
 345     Close(true);
 346 }
 347
 348 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 349 {
 350     wxMessageBox(wxT("Demo program for wxDisplay class.\n\n(c) 2003-2006 Vadim Zeitlin"),
 351                  wxT("About Display Sample"),
 352                  wxOK | wxICON_INFORMATION,
 353                  this);
 354 }
 355
 356 void MyFrame::OnFromPoint(wxCommandEvent& WXUNUSED(event))
 357 {
 358 #if wxUSE_STATUSBAR
 359     SetStatusText(wxT("Press the mouse anywhere..."));
 360 #endif // wxUSE_STATUSBAR
 361
 362     CaptureMouse();
 363 }
 364
 365 void MyFrame::OnFullScreen(wxCommandEvent& event)
 366 {
 367     ShowFullScreen(event.IsChecked());
 368 }
 369
 370 #if wxUSE_DISPLAY
 371
 372 void MyFrame::OnChangeMode(wxCommandEvent& event)
 373 {
 374     wxDisplay dpy(m_book->GetSelection());
 375
 376     // you wouldn't write this in real code, would you?
 377     if ( !dpy.ChangeMode(((MyVideoModeClientData *)
 378                 wxDynamicCast(event.GetEventObject(), wxChoice)->
 379                     GetClientObject(event.GetInt()))->mode) )
 380     {
 381         wxLogError(wxT("Changing video mode failed!"));
 382     }
 383 }
 384
 385 void MyFrame::OnResetMode(wxCommandEvent& WXUNUSED(event))
 386 {
 387     wxDisplay dpy(m_book->GetSelection());
 388
 389     dpy.ResetMode();
 390 }
 391
 392 #endif // wxUSE_DISPLAY
 393
 394 void MyFrame::OnLeftClick(wxMouseEvent& event)
 395 {
 396     if ( HasCapture() )
 397     {
 398         // mouse events are in client coords, wxDisplay works in screen ones
 399         const wxPoint ptScreen = ClientToScreen(event.GetPosition());
 400         int dpy = wxDisplay::GetFromPoint(ptScreen);
 401         if ( dpy == wxNOT_FOUND )
 402         {
 403             wxLogError(wxT("Mouse clicked outside of display!?"));
 404         }
 405
 406         wxLogStatus(this, wxT("Mouse clicked in display %d (at (%d, %d))"),
 407                     dpy, ptScreen.x, ptScreen.y);
 408
 409         ReleaseMouse();
 410     }
 411 }
 412
 413 #if wxUSE_DISPLAY
 414
 415 void MyFrame::OnDisplayChanged(wxDisplayChangedEvent& event)
 416 {
 417     // update the current mode text
 418     for ( size_t n = 0; n < m_book->GetPageCount(); n++ )
 419     {
 420         wxStaticText *label = wxDynamicCast(m_book->GetPage(n)->
 421                                                 FindWindow(Display_CurrentMode),
 422                                             wxStaticText);
 423         if ( label )
 424             label->SetLabel(VideoModeToText(wxDisplay(n).GetCurrentMode()));
 425     }
 426
 427
 428     wxLogStatus(this, wxT("Display resolution was changed."));
 429
 430     event.Skip();
 431 }
 432
 433 #endif // wxUSE_DISPLAY