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(__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     if ( !wxApp::OnInit() )
 171         return false;
 172
 173 #ifdef __WXMSW__
 174     if ( argc == 2 && !wxStricmp(argv[1],  wxT("/dx")) )
 175     {
 176         wxSystemOptions::SetOption(wxT("msw.display.directdraw"), 1);
 177     }
 178 #endif // __WXMSW__
 179
 180     // create the main application window
 181     MyFrame *frame = new MyFrame(_("Display wxWidgets Sample"),
 182                                  wxDefaultPosition, wxDefaultSize);
 183
 184     // and show it (the frames, unlike simple controls, are not shown when
 185     // created initially)
 186     frame->Show();
 187
 188     // success: wxApp::OnRun() will be called which will enter the main message
 189     // loop and the application will run. If we returned false here, the
 190     // application would exit immediately.
 191     return true;
 192 }
 193
 194 // ----------------------------------------------------------------------------
 195 // main frame
 196 // ----------------------------------------------------------------------------
 197
 198 // frame constructor
 199 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
 200        : wxFrame(NULL, wxID_ANY, title, pos, size, style)
 201 {
 202     // set the frame icon
 203     SetIcon(wxICON(sample));
 204
 205 #if wxUSE_MENUS
 206     // create a menu bar
 207     wxMenu *menuDisplay = new wxMenu;
 208     menuDisplay->Append(Display_FromPoint, _("Find from &point..."));
 209     menuDisplay->AppendSeparator();
 210     menuDisplay->AppendCheckItem(Display_FullScreen, _("Full &screen\tF12"));
 211     menuDisplay->AppendSeparator();
 212     menuDisplay->Append(Display_Quit, _("E&xit\tAlt-X"), _("Quit this program"));
 213
 214     // the "About" item should be in the help menu
 215     wxMenu *helpMenu = new wxMenu;
 216     helpMenu->Append(Display_About, _("&About\tF1"), _("Show about dialog"));
 217
 218     // now append the freshly created menu to the menu bar...
 219     wxMenuBar *menuBar = new wxMenuBar();
 220     menuBar->Append(menuDisplay, _("&Display"));
 221     menuBar->Append(helpMenu, _("&Help"));
 222
 223     // ... and attach this menu bar to the frame
 224     SetMenuBar(menuBar);
 225 #endif // wxUSE_MENUS
 226
 227 #if wxUSE_STATUSBAR
 228     // create status bar
 229     CreateStatusBar();
 230 #endif // wxUSE_STATUSBAR
 231
 232     // create child controls
 233     wxPanel *panel = new wxPanel(this, wxID_ANY);
 234
 235     m_book = new wxBookCtrl(panel, wxID_ANY);
 236     const size_t count = wxDisplay::GetCount();
 237     for ( size_t nDpy = 0; nDpy < count; nDpy++ )
 238     {
 239         wxDisplay display(nDpy);
 240
 241         wxWindow *page = new wxPanel(m_book, wxID_ANY);
 242
 243         // create 2 column flex grid sizer with growable 2nd column
 244         wxFlexGridSizer *sizer = new wxFlexGridSizer(2, 10, 20);
 245         sizer->AddGrowableCol(1);
 246
 247         const wxRect r(display.GetGeometry());
 248         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Origin: ")));
 249         sizer->Add(new wxStaticText
 250                        (
 251                         page,
 252                         wxID_ANY,
 253                         wxString::Format(wxT("(%d, %d)"),
 254                                          r.x, r.y)
 255                        ));
 256
 257         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Size: ")));
 258         sizer->Add(new wxStaticText
 259                        (
 260                         page,
 261                         wxID_ANY,
 262                         wxString::Format(wxT("(%d, %d)"),
 263                                          r.width, r.height)
 264                        ));
 265
 266         const wxRect rc(display.GetClientArea());
 267         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Client area: ")));
 268         sizer->Add(new wxStaticText
 269                        (
 270                         page,
 271                         wxID_ANY,
 272                         wxString::Format(wxT("(%d, %d)-(%d, %d)"),
 273                                          rc.x, rc.y, rc.width, rc.height)
 274                        ));
 275
 276         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Name: ")));
 277         sizer->Add(new wxStaticText(page, wxID_ANY, display.GetName()));
 278
 279         wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 280         sizerTop->Add(sizer, 1, wxALL | wxEXPAND, 10);
 281
 282 #if wxUSE_DISPLAY
 283         wxChoice *choiceModes = new wxChoice(page, Display_ChangeMode);
 284         const wxArrayVideoModes modes = display.GetModes();
 285         const size_t count = modes.GetCount();
 286         for ( size_t nMode = 0; nMode < count; nMode++ )
 287         {
 288             const wxVideoMode& mode = modes[nMode];
 289
 290             choiceModes->Append(VideoModeToText(mode),
 291                                 new MyVideoModeClientData(mode));
 292         }
 293
 294         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("&Modes: ")));
 295         sizer->Add(choiceModes, 0, wxEXPAND);
 296
 297         sizer->Add(new wxStaticText(page, wxID_ANY, wxT("Current: ")));
 298         sizer->Add(new wxStaticText(page, Display_CurrentMode,
 299                                     VideoModeToText(display.GetCurrentMode())));
 300
 301         // add it to another sizer to have borders around it and button below
 302         sizerTop->Add(new wxButton(page, Display_ResetMode, wxT("&Reset mode")),
 303                       0, wxALL | wxCENTRE, 5);
 304 #endif // wxUSE_DISPLAY
 305
 306         page->SetSizer(sizerTop);
 307
 308         m_book->AddPage(page,
 309                         wxString::Format(wxT("Display %lu"),
 310                                          (unsigned long)nDpy));
 311     }
 312
 313     wxBoxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
 314     sizer->Add(m_book, 1, wxEXPAND);
 315     panel->SetSizer(sizer);
 316     sizer->SetSizeHints(this);
 317 }
 318
 319 #if wxUSE_DISPLAY
 320
 321 wxString MyFrame::VideoModeToText(const wxVideoMode& mode)
 322 {
 323     wxString s;
 324     s.Printf(wxT("%dx%d"), mode.w, mode.h);
 325
 326     if ( mode.bpp )
 327     {
 328         s += wxString::Format(wxT(", %dbpp"), mode.bpp);
 329     }
 330
 331     if ( mode.refresh )
 332     {
 333         s += wxString::Format(wxT(", %dHz"), mode.refresh);
 334     }
 335
 336     return s;
 337 }
 338
 339 #endif // wxUSE_DISPLAY
 340
 341 // event handlers
 342
 343 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 344 {
 345     // true is to force the frame to close
 346     Close(true);
 347 }
 348
 349 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 350 {
 351     wxMessageBox(wxT("Demo program for wxDisplay class.\n\n(c) 2003-2006 Vadim Zeitlin"),
 352                  wxT("About Display Sample"),
 353                  wxOK | wxICON_INFORMATION,
 354                  this);
 355 }
 356
 357 void MyFrame::OnFromPoint(wxCommandEvent& WXUNUSED(event))
 358 {
 359 #if wxUSE_STATUSBAR
 360     SetStatusText(wxT("Press the mouse anywhere..."));
 361 #endif // wxUSE_STATUSBAR
 362
 363     CaptureMouse();
 364 }
 365
 366 void MyFrame::OnFullScreen(wxCommandEvent& event)
 367 {
 368     ShowFullScreen(event.IsChecked());
 369 }
 370
 371 #if wxUSE_DISPLAY
 372
 373 void MyFrame::OnChangeMode(wxCommandEvent& event)
 374 {
 375     wxDisplay dpy(m_book->GetSelection());
 376
 377     // you wouldn't write this in real code, would you?
 378     if ( !dpy.ChangeMode(((MyVideoModeClientData *)
 379                 wxDynamicCast(event.GetEventObject(), wxChoice)->
 380                     GetClientObject(event.GetInt()))->mode) )
 381     {
 382         wxLogError(wxT("Changing video mode failed!"));
 383     }
 384 }
 385
 386 void MyFrame::OnResetMode(wxCommandEvent& WXUNUSED(event))
 387 {
 388     wxDisplay dpy(m_book->GetSelection());
 389
 390     dpy.ResetMode();
 391 }
 392
 393 #endif // wxUSE_DISPLAY
 394
 395 void MyFrame::OnLeftClick(wxMouseEvent& event)
 396 {
 397     if ( HasCapture() )
 398     {
 399         // mouse events are in client coords, wxDisplay works in screen ones
 400         const wxPoint ptScreen = ClientToScreen(event.GetPosition());
 401         int dpy = wxDisplay::GetFromPoint(ptScreen);
 402         if ( dpy == wxNOT_FOUND )
 403         {
 404             wxLogError(wxT("Mouse clicked outside of display!?"));
 405         }
 406
 407         wxLogStatus(this, wxT("Mouse clicked in display %d (at (%d, %d))"),
 408                     dpy, ptScreen.x, ptScreen.y);
 409
 410         ReleaseMouse();
 411     }
 412 }
 413
 414 #if wxUSE_DISPLAY
 415
 416 void MyFrame::OnDisplayChanged(wxDisplayChangedEvent& event)
 417 {
 418     // update the current mode text
 419     for ( size_t n = 0; n < m_book->GetPageCount(); n++ )
 420     {
 421         wxStaticText *label = wxDynamicCast(m_book->GetPage(n)->
 422                                                 FindWindow(Display_CurrentMode),
 423                                             wxStaticText);
 424         if ( label )
 425             label->SetLabel(VideoModeToText(wxDisplay(n).GetCurrentMode()));
 426     }
 427
 428
 429     wxLogStatus(this, wxT("Display resolution was changed."));
 430
 431     event.Skip();
 432 }
 433
 434 #endif // wxUSE_DISPLAY