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 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  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 explicitly
  28 #ifndef WX_PRECOMP
  29     #include "wx/wx.h"
  30 #endif
  31
  32 #include "wx/bookctrl.h"
  33 #include "wx/sysopt.h"
  34
  35 #include "wx/display.h"
  36
  37
  38 // the application icon (under Windows and OS/2 it is in resources)
  39 #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
  40     #include "../sample.xpm"
  41 #endif
  42
  43 // ----------------------------------------------------------------------------
  44 // private classes
  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     // override base class virtuals
  52     // ----------------------------
  53
  54     // this one is called on application startup and is a good place for the app
  55     // initialization (doing it here and not in the ctor allows to have an error
  56     // return: if OnInit() returns false, the application terminates)
  57     virtual bool OnInit();
  58 };
  59
  60 // Define a new frame type: this is going to be our main frame
  61 class MyFrame : public wxFrame
  62 {
  63 public:
  64     // ctor(s)
  65     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size,
  66             long style = wxDEFAULT_FRAME_STYLE);
  67
  68     // event handlers (these functions should _not_ be virtual)
  69     void OnQuit(wxCommandEvent& event);
  70     void OnFromPoint(wxCommandEvent& event);
  71     void OnFullScreen(wxCommandEvent& event);
  72     void OnAbout(wxCommandEvent& event);
  73
  74 #if wxUSE_DISPLAY
  75     void OnChangeMode(wxCommandEvent& event);
  76     void OnResetMode(wxCommandEvent& event);
  77
  78     void OnDisplayChanged(wxDisplayChangedEvent& event);
  79 #endif // wxUSE_DISPLAY
  80
  81     void OnLeftClick(wxMouseEvent& event);
  82
  83 private:
  84 #if wxUSE_DISPLAY
  85     // convert video mode to textual description
  86     wxString VideoModeToText(const wxVideoMode& mode);
  87 #endif // wxUSE_DISPLAY
  88
  89     // GUI controls
  90     wxBookCtrl *m_book;
  91
  92     // any class wishing to process wxWidgets events must use this macro
  93     DECLARE_EVENT_TABLE()
  94 };
  95
  96 // Client data class for the choice control containing the video modes
  97 class MyVideoModeClientData : public wxClientData
  98 {
  99 public:
 100     MyVideoModeClientData(const wxVideoMode& m) : mode(m) { }
 101
 102     const wxVideoMode mode;
 103 };
 104
 105 // ----------------------------------------------------------------------------
 106 // constants
 107 // ----------------------------------------------------------------------------
 108
 109 // IDs for the controls and the menu commands
 110 enum
 111 {
 112     // menu items
 113     Display_FromPoint = wxID_HIGHEST + 1,
 114     Display_FullScreen,
 115
 116     // controls
 117     Display_ChangeMode,
 118     Display_ResetMode,
 119     Display_CurrentMode,
 120
 121
 122     // it is important for the id corresponding to the "About" command to have
 123     // this standard value as otherwise it won't be handled properly under Mac
 124     // (where it is special and put into the "Apple" menu)
 125     Display_Quit = wxID_EXIT,
 126     Display_About = wxID_ABOUT
 127 };
 128
 129 // ----------------------------------------------------------------------------
 130 // event tables and other macros for wxWidgets
 131 // ----------------------------------------------------------------------------
 132
 133 // the event tables connect the wxWidgets events with the functions (event
 134 // handlers) which process them. It can be also done at run-time, but for the
 135 // simple menu events like this the static method is much simpler.
 136 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 137     EVT_MENU(Display_Quit,  MyFrame::OnQuit)
 138     EVT_MENU(Display_FromPoint,  MyFrame::OnFromPoint)
 139     EVT_MENU(Display_FullScreen, MyFrame::OnFullScreen)
 140     EVT_MENU(Display_About, MyFrame::OnAbout)
 141
 142 #if wxUSE_DISPLAY
 143     EVT_CHOICE(Display_ChangeMode, MyFrame::OnChangeMode)
 144     EVT_BUTTON(Display_ResetMode, MyFrame::OnResetMode)
 145
 146     EVT_DISPLAY_CHANGED(MyFrame::OnDisplayChanged)
 147 #endif // wxUSE_DISPLAY
 148
 149     EVT_LEFT_UP(MyFrame::OnLeftClick)
 150 END_EVENT_TABLE()
 151
 152 // Create a new application object: this macro will allow wxWidgets to create
 153 // the application object during program execution (it's better than using a
 154 // static object for many reasons) and also declares the accessor function
 155 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 156 // not wxApp)
 157 IMPLEMENT_APP(MyApp)
 158
 159 // ============================================================================
 160 // implementation
 161 // ============================================================================
 162
 163 // ----------------------------------------------------------------------------
 164 // the application class
 165 // ----------------------------------------------------------------------------
 166
 167 // 'Main program' equivalent: the program execution "starts" here
 168 bool MyApp::OnInit()
 169 {
 170 #ifdef __WXMSW__
 171     if ( argc == 2 && !wxStricmp(argv[1],  _T("/dx")) )
 172     {
 173         wxSystemOptions::SetOption(_T("msw.display.directdraw"), 1);
 174     }
 175 #endif // __WXMSW__
 176
 177     // create the main application window
 178     MyFrame *frame = new MyFrame(_("Display wxWidgets Sample"),
 179                                  wxDefaultPosition, wxDefaultSize);
 180
 181     // and show it (the frames, unlike simple controls, are not shown when
 182     // created initially)
 183     frame->Show();
 184
 185     // success: wxApp::OnRun() will be called which will enter the main message
 186     // loop and the application will run. If we returned false here, the
 187     // application would exit immediately.
 188     return true;
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // main frame
 193 // ----------------------------------------------------------------------------
 194
 195 // frame constructor
 196 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
 197        : wxFrame(NULL, wxID_ANY, title, pos, size, style)
 198 {
 199     // set the frame icon
 200     SetIcon(wxICON(sample));
 201
 202 #if wxUSE_MENUS
 203     // create a menu bar
 204     wxMenu *menuDisplay = new wxMenu;
 205     menuDisplay->Append(Display_FromPoint, _("Find from &point..."));
 206     menuDisplay->AppendSeparator();
 207     menuDisplay->AppendCheckItem(Display_FullScreen, _("Full &screen\tF12"));
 208     menuDisplay->AppendSeparator();
 209     menuDisplay->Append(Display_Quit, _("E&xit\tAlt-X"), _("Quit this program"));
 210
 211     // the "About" item should be in the help menu
 212     wxMenu *helpMenu = new wxMenu;
 213     helpMenu->Append(Display_About, _("&About...\tF1"), _("Show about dialog"));
 214
 215     // now append the freshly created menu to the menu bar...
 216     wxMenuBar *menuBar = new wxMenuBar();
 217     menuBar->Append(menuDisplay, _("&Display"));
 218     menuBar->Append(helpMenu, _("&Help"));
 219
 220     // ... and attach this menu bar to the frame
 221     SetMenuBar(menuBar);
 222 #endif // wxUSE_MENUS
 223
 224 #if wxUSE_STATUSBAR
 225     // create status bar
 226     CreateStatusBar();
 227 #endif // wxUSE_STATUSBAR
 228
 229     // create child controls
 230     wxPanel *panel = new wxPanel(this, wxID_ANY);
 231
 232     m_book = new wxBookCtrl(panel, wxID_ANY);
 233     const size_t count = wxDisplay::GetCount();
 234     for ( size_t nDpy = 0; nDpy < count; nDpy++ )
 235     {
 236         wxDisplay display(nDpy);
 237
 238         wxWindow *page = new wxPanel(m_book, wxID_ANY);
 239
 240         // create 2 column flex grid sizer with growable 2nd column
 241         wxFlexGridSizer *sizer = new wxFlexGridSizer(2, 10, 20);
 242         sizer->AddGrowableCol(1);
 243
 244         const wxRect r(display.GetGeometry());
 245         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Origin: ")));
 246         sizer->Add(new wxStaticText
 247                        (
 248                         page,
 249                         wxID_ANY,
 250                         wxString::Format(_T("(%d, %d)"),
 251                                          r.x, r.y)
 252                        ));
 253
 254         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Size: ")));
 255         sizer->Add(new wxStaticText
 256                        (
 257                         page,
 258                         wxID_ANY,
 259                         wxString::Format(_T("(%d, %d)"),
 260                                          r.width, r.height)
 261                        ));
 262
 263         const wxRect rc(display.GetClientArea());
 264         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Client area: ")));
 265         sizer->Add(new wxStaticText
 266                        (
 267                         page,
 268                         wxID_ANY,
 269                         wxString::Format(_T("(%d, %d)-(%d, %d)"),
 270                                          rc.x, rc.y, rc.width, rc.height)
 271                        ));
 272
 273         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Name: ")));
 274         sizer->Add(new wxStaticText(page, wxID_ANY, display.GetName()));
 275
 276         wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 277         sizerTop->Add(sizer, 1, wxALL | wxEXPAND, 10);
 278
 279 #if wxUSE_DISPLAY
 280         wxChoice *choiceModes = new wxChoice(page, Display_ChangeMode);
 281         const wxArrayVideoModes modes = display.GetModes();
 282         const size_t count = modes.GetCount();
 283         for ( size_t nMode = 0; nMode < count; nMode++ )
 284         {
 285             const wxVideoMode& mode = modes[nMode];
 286
 287             choiceModes->Append(VideoModeToText(mode),
 288                                 new MyVideoModeClientData(mode));
 289         }
 290
 291         sizer->Add(new wxStaticText(page, wxID_ANY, _T("&Modes: ")));
 292         sizer->Add(choiceModes, 0, wxEXPAND);
 293
 294         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Current: ")));
 295         sizer->Add(new wxStaticText(page, Display_CurrentMode,
 296                                     VideoModeToText(display.GetCurrentMode())));
 297
 298         // add it to another sizer to have borders around it and button below
 299         sizerTop->Add(new wxButton(page, Display_ResetMode, _T("&Reset mode")),
 300                       0, wxALL | wxCENTRE, 5);
 301 #endif // wxUSE_DISPLAY
 302
 303         page->SetSizer(sizerTop);
 304
 305         m_book->AddPage(page,
 306                         wxString::Format(_T("Display %lu"),
 307                                          (unsigned long)nDpy));
 308     }
 309
 310     wxBoxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
 311     sizer->Add(m_book, 1, wxEXPAND);
 312     panel->SetSizer(sizer);
 313     sizer->Fit(this);
 314     sizer->SetSizeHints(this);
 315 }
 316
 317 #if wxUSE_DISPLAY
 318
 319 wxString MyFrame::VideoModeToText(const wxVideoMode& mode)
 320 {
 321     wxString s;
 322     s.Printf(_T("%dx%d"), mode.w, mode.h);
 323
 324     if ( mode.bpp )
 325     {
 326         s += wxString::Format(_T(", %dbpp"), mode.bpp);
 327     }
 328
 329     if ( mode.refresh )
 330     {
 331         s += wxString::Format(_T(", %dHz"), mode.refresh);
 332     }
 333
 334     return s;
 335 }
 336
 337 #endif // wxUSE_DISPLAY
 338
 339 // event handlers
 340
 341 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 342 {
 343     // true is to force the frame to close
 344     Close(true);
 345 }
 346
 347 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 348 {
 349     wxMessageBox(_T("Demo program for wxDisplay class.\n\n(c) 2003-2006 Vadim Zeitlin"),
 350                  _T("About Display Sample"),
 351                  wxOK | wxICON_INFORMATION,
 352                  this);
 353 }
 354
 355 void MyFrame::OnFromPoint(wxCommandEvent& WXUNUSED(event))
 356 {
 357 #if wxUSE_STATUSBAR
 358     SetStatusText(_T("Press the mouse anywhere..."));
 359 #endif // wxUSE_STATUSBAR
 360
 361     CaptureMouse();
 362 }
 363
 364 void MyFrame::OnFullScreen(wxCommandEvent& event)
 365 {
 366     ShowFullScreen(event.IsChecked());
 367 }
 368
 369 #if wxUSE_DISPLAY
 370
 371 void MyFrame::OnChangeMode(wxCommandEvent& event)
 372 {
 373     wxDisplay dpy(m_book->GetSelection());
 374
 375     // you wouldn't write this in real code, would you?
 376     if ( !dpy.ChangeMode(((MyVideoModeClientData *)
 377                 wxDynamicCast(event.GetEventObject(), wxChoice)->
 378                     GetClientObject(event.GetInt()))->mode) )
 379     {
 380         wxLogError(_T("Changing video mode failed!"));
 381     }
 382 }
 383
 384 void MyFrame::OnResetMode(wxCommandEvent& WXUNUSED(event))
 385 {
 386     wxDisplay dpy(m_book->GetSelection());
 387
 388     dpy.ResetMode();
 389 }
 390
 391 #endif // wxUSE_DISPLAY
 392
 393 void MyFrame::OnLeftClick(wxMouseEvent& event)
 394 {
 395     if ( HasCapture() )
 396     {
 397         // mouse events are in client coords, wxDisplay works in screen ones
 398         const wxPoint ptScreen = ClientToScreen(event.GetPosition());
 399         int dpy = wxDisplay::GetFromPoint(ptScreen);
 400         if ( dpy == wxNOT_FOUND )
 401         {
 402             wxLogError(_T("Mouse clicked outside of display!?"));
 403         }
 404
 405         wxLogStatus(this, _T("Mouse clicked in display %d (at (%d, %d))"),
 406                     dpy, ptScreen.x, ptScreen.y);
 407
 408         ReleaseMouse();
 409     }
 410 }
 411
 412 #if wxUSE_DISPLAY
 413
 414 void MyFrame::OnDisplayChanged(wxDisplayChangedEvent& event)
 415 {
 416     // update the current mode text
 417     for ( size_t n = 0; n < m_book->GetPageCount(); n++ )
 418     {
 419         wxStaticText *label = wxDynamicCast(m_book->GetPage(n)->
 420                                                 FindWindow(Display_CurrentMode),
 421                                             wxStaticText);
 422         if ( label )
 423             label->SetLabel(VideoModeToText(wxDisplay(n).GetCurrentMode()));
 424     }
 425
 426
 427     wxLogStatus(this, _T("Display resolution was changed."));
 428
 429     event.Skip();
 430 }
 431
 432 #endif // wxUSE_DISPLAY