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
  34 #include "wx/display.h"
  35
  36
  37 // the application icon (under Windows and OS/2 it is in resources)
  38 #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
  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     void OnChangeMode(wxCommandEvent& event);
  74     void OnResetMode(wxCommandEvent& event);
  75
  76     void OnLeftClick(wxMouseEvent& event);
  77
  78 #if wxUSE_DISPLAY
  79     void OnDisplayChanged(wxDisplayChangedEvent& event);
  80 #endif
  81
  82 private:
  83 #if wxUSE_DISPLAY
  84     // convert video mode to textual description
  85     wxString VideoModeToText(const wxVideoMode& mode);
  86 #endif
  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     EVT_CHOICE(Display_ChangeMode, MyFrame::OnChangeMode)
 142     EVT_BUTTON(Display_ResetMode, MyFrame::OnResetMode)
 143
 144     EVT_LEFT_UP(MyFrame::OnLeftClick)
 145
 146 #if wxUSE_DISPLAY
 147     EVT_DISPLAY_CHANGED(MyFrame::OnDisplayChanged)
 148 #endif
 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 !wxUSE_DISPLAY
 170     wxMessageBox(_("Please recompile wxWidgets and this sample with wxUSE_DISPLAY set to 1."));
 171     return false;
 172 #else
 173
 174 #ifdef __WXMSW__
 175     if ( argc == 2 && !wxStricmp(argv[1],  _T("/dx")) )
 176     {
 177         wxDisplay::UseDirectX(true);
 178     }
 179 #endif // __WXMSW__
 180
 181     // create the main application window
 182     MyFrame *frame = new MyFrame(_("Display wxWidgets Sample"),
 183                                  wxDefaultPosition, wxDefaultSize);
 184
 185     // and show it (the frames, unlike simple controls, are not shown when
 186     // created initially)
 187     frame->Show();
 188
 189     // success: wxApp::OnRun() will be called which will enter the main message
 190     // loop and the application will run. If we returned false here, the
 191     // application would exit immediately.
 192     return true;
 193 #endif
 194 }
 195
 196 // ----------------------------------------------------------------------------
 197 // main frame
 198 // ----------------------------------------------------------------------------
 199
 200 // frame constructor
 201 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
 202        : wxFrame(NULL, wxID_ANY, title, pos, size, style)
 203 {
 204     // set the frame icon
 205     SetIcon(wxICON(sample));
 206
 207 #if wxUSE_MENUS
 208     // create a menu bar
 209     wxMenu *menuDisplay = new wxMenu;
 210     menuDisplay->Append(Display_FromPoint, _("Find from &point..."));
 211     menuDisplay->AppendSeparator();
 212     menuDisplay->AppendCheckItem(Display_FullScreen, _("Full &screen\tF12"));
 213     menuDisplay->AppendSeparator();
 214     menuDisplay->Append(Display_Quit, _("E&xit\tAlt-X"), _("Quit this program"));
 215
 216     // the "About" item should be in the help menu
 217     wxMenu *helpMenu = new wxMenu;
 218     helpMenu->Append(Display_About, _("&About...\tF1"), _("Show about dialog"));
 219
 220     // now append the freshly created menu to the menu bar...
 221     wxMenuBar *menuBar = new wxMenuBar();
 222     menuBar->Append(menuDisplay, _("&Display"));
 223     menuBar->Append(helpMenu, _("&Help"));
 224
 225     // ... and attach this menu bar to the frame
 226     SetMenuBar(menuBar);
 227 #endif // wxUSE_MENUS
 228
 229 #if wxUSE_STATUSBAR
 230     // create status bar
 231     CreateStatusBar();
 232 #endif // wxUSE_STATUSBAR
 233
 234 #if wxUSE_DISPLAY
 235     // create child controls
 236
 237     wxPanel *panel = new wxPanel(this, wxID_ANY);
 238
 239     m_book = new wxBookCtrl(panel, wxID_ANY);
 240     const size_t count = wxDisplay::GetCount();
 241     for ( size_t nDpy = 0; nDpy < count; nDpy++ )
 242     {
 243         wxDisplay display(nDpy);
 244
 245         wxWindow *page = new wxPanel(m_book, wxID_ANY);
 246
 247         // create 2 column flex grid sizer with growable 2nd column
 248         wxFlexGridSizer *sizer = new wxFlexGridSizer(2, 10, 20);
 249         sizer->AddGrowableCol(1);
 250
 251         const wxRect r(display.GetGeometry());
 252         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Origin: ")));
 253         sizer->Add(new wxStaticText
 254                        (
 255                         page,
 256                         wxID_ANY,
 257                         wxString::Format(_T("(%d, %d)"),
 258                                          r.x, r.y)
 259                        ));
 260
 261         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Size: ")));
 262         sizer->Add(new wxStaticText
 263                        (
 264                         page,
 265                         wxID_ANY,
 266                         wxString::Format(_T("(%d, %d)"),
 267                                          r.width, r.height)
 268                        ));
 269
 270
 271         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Name: ")));
 272         sizer->Add(new wxStaticText(page, wxID_ANY, display.GetName()));
 273
 274         wxChoice *choiceModes = new wxChoice(page, Display_ChangeMode);
 275         const wxArrayVideoModes modes = display.GetModes();
 276         const size_t count = modes.GetCount();
 277         for ( size_t nMode = 0; nMode < count; nMode++ )
 278         {
 279             const wxVideoMode& mode = modes[nMode];
 280
 281             choiceModes->Append(VideoModeToText(mode),
 282                                 new MyVideoModeClientData(mode));
 283         }
 284
 285         sizer->Add(new wxStaticText(page, wxID_ANY, _T("&Modes: ")));
 286         sizer->Add(choiceModes, 0, wxEXPAND);
 287
 288         sizer->Add(new wxStaticText(page, wxID_ANY, _T("Current: ")));
 289         sizer->Add(new wxStaticText(page, Display_CurrentMode,
 290                                     VideoModeToText(display.GetCurrentMode())));
 291
 292         // add it to another sizer to have borders around it and button below
 293         wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 294         sizerTop->Add(sizer, 1, wxALL | wxEXPAND, 10);
 295
 296         sizerTop->Add(new wxButton(page, Display_ResetMode, _T("&Reset mode")),
 297                       0, wxALL | wxCENTRE, 5);
 298         page->SetSizer(sizerTop);
 299
 300         m_book->AddPage(page,
 301                         wxString::Format(_T("Display %lu"),
 302                                          (unsigned long)nDpy));
 303     }
 304
 305     wxBoxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
 306     sizer->Add(m_book, 1, wxEXPAND);
 307     panel->SetSizer(sizer);
 308     sizer->Fit(this);
 309     sizer->SetSizeHints(this);
 310 #endif
 311 }
 312
 313 #if wxUSE_DISPLAY
 314 wxString MyFrame::VideoModeToText(const wxVideoMode& mode)
 315 {
 316     wxString s;
 317     s.Printf(_T("%dx%d"), mode.w, mode.h);
 318
 319     if ( mode.bpp )
 320     {
 321         s += wxString::Format(_T(", %dbpp"), mode.bpp);
 322     }
 323
 324     if ( mode.refresh )
 325     {
 326         s += wxString::Format(_T(", %dHz"), mode.refresh);
 327     }
 328
 329     return s;
 330 }
 331 #endif
 332
 333 // event handlers
 334
 335 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 336 {
 337     // true is to force the frame to close
 338     Close(true);
 339 }
 340
 341 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 342 {
 343     wxMessageBox(_T("Demo program for wxDisplay class.\n\n(c) 2003 Vadim Zeitlin"),
 344                  _T("About Display Sample"),
 345                  wxOK | wxICON_INFORMATION,
 346                  this);
 347 }
 348
 349 void MyFrame::OnFromPoint(wxCommandEvent& WXUNUSED(event))
 350 {
 351 #if wxUSE_STATUSBAR
 352     SetStatusText(_T("Press the mouse anywhere..."));
 353 #endif // wxUSE_STATUSBAR
 354
 355     CaptureMouse();
 356 }
 357
 358 void MyFrame::OnFullScreen(wxCommandEvent& event)
 359 {
 360     ShowFullScreen(event.IsChecked());
 361 }
 362
 363 void MyFrame::OnChangeMode(wxCommandEvent& event)
 364 {
 365 #if wxUSE_DISPLAY
 366     wxDisplay dpy(m_book->GetSelection());
 367
 368     // you wouldn't write this in real code, would you?
 369     if ( !dpy.ChangeMode(((MyVideoModeClientData *)
 370                 wxDynamicCast(event.GetEventObject(), wxChoice)->
 371                     GetClientObject(event.GetInt()))->mode) )
 372     {
 373         wxLogError(_T("Changing video mode failed!"));
 374     }
 375 #endif
 376 }
 377
 378 void MyFrame::OnResetMode(wxCommandEvent& WXUNUSED(event))
 379 {
 380 #if wxUSE_DISPLAY
 381     wxDisplay dpy(m_book->GetSelection());
 382
 383     dpy.ResetMode();
 384 #endif
 385 }
 386
 387 void MyFrame::OnLeftClick(wxMouseEvent& event)
 388 {
 389 #if wxUSE_DISPLAY
 390     if ( HasCapture() )
 391     {
 392         // mouse events are in client coords, wxDisplay works in screen ones
 393         const wxPoint ptScreen = ClientToScreen(event.GetPosition());
 394         int dpy = wxDisplay::GetFromPoint(ptScreen);
 395         if ( dpy == wxNOT_FOUND )
 396         {
 397             wxLogError(_T("Mouse clicked outside of display!?"));
 398         }
 399
 400         wxLogStatus(this, _T("Mouse clicked in display %d (at (%d, %d))"),
 401                     dpy, ptScreen.x, ptScreen.y);
 402
 403         ReleaseMouse();
 404     }
 405 #endif
 406 }
 407
 408 #if wxUSE_DISPLAY
 409 void MyFrame::OnDisplayChanged(wxDisplayChangedEvent& event)
 410 {
 411     // update the current mode text
 412     for ( size_t n = 0; n < m_book->GetPageCount(); n++ )
 413     {
 414         wxStaticText *label = wxDynamicCast(m_book->GetPage(n)->
 415                                                 FindWindow(Display_CurrentMode),
 416                                             wxStaticText);
 417         if ( label )
 418             label->SetLabel(VideoModeToText(wxDisplay(n).GetCurrentMode()));
 419     }
 420
 421
 422     wxLogStatus(this, _T("Display resolution was changed."));
 423
 424     event.Skip();
 425 }
 426 #endif
 427