utils/wxMMedia2/board/mmboard.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mmboard.cpp
   3 // Purpose:     Multimedia Library sample
   4 // Author:      Guilhem Lavaux (created from minimal by J. Smart)
   5 // Modified by:
   6 // Created:     13/02/2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19 #ifdef __GNUG__
  20     #pragma implementation "mmboard.cpp"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx/wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 // for all others, include the necessary headers (this file is usually all you
  31 // need because it includes almost all "standard" wxWindows headers
  32 #ifndef WX_PRECOMP
  33     #include "wx/wx.h"
  34 #endif
  35
  36 // ----------------------------------------------------------------------------
  37 // ressources
  38 // ----------------------------------------------------------------------------
  39 // the application icon
  40 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  41     #include "mondrian.xpm"
  42 #endif
  43
  44 // include multimedia classes
  45 #include "sndbase.h"
  46 #ifdef __WIN32__
  47     #include "sndwin.h"
  48 #endif
  49 #ifdef __UNIX__
  50     #include "sndoss.h"
  51     #include "sndesd.h"
  52 #endif
  53
  54 #include "wx/statline.h"
  55 #include "wx/stattext.h"
  56
  57 // include personnal classes
  58 #include "mmboard.h"
  59 #include "mmbman.h"
  60
  61 #include "play.xpm"
  62 #include "stop.xpm"
  63 #include "eject.xpm"
  64 #include "pause.xpm"
  65
  66 // ----------------------------------------------------------------------------
  67 // private classes
  68 // ----------------------------------------------------------------------------
  69
  70 // Main Multimedia Board frame
  71 class MMBoardFrame : public wxFrame
  72 {
  73 public:
  74   // ctor(s)
  75   MMBoardFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  76   // dtor
  77   ~MMBoardFrame();
  78
  79   // event handlers
  80   void OnQuit(wxCommandEvent& event);
  81   void OnAbout(wxCommandEvent& event);
  82   void OnOpen(wxCommandEvent& event);
  83   void OnPlay(wxCommandEvent& event);
  84   void OnStop(wxCommandEvent& event);
  85   void OnPause(wxCommandEvent& event);
  86   void OnRefreshInfo(wxEvent& event);
  87
  88   void OpenVideoWindow();
  89   void CloseVideoWindow();
  90
  91 private:
  92   // any class wishing to process wxWindows events must use this macro
  93   DECLARE_EVENT_TABLE()
  94
  95 private:
  96   void UpdateMMedInfo();
  97   void UpdateInfoText();
  98
  99   MMBoardFile *m_opened_file;
 100
 101   wxSlider *m_positionSlider;
 102   wxBitmapButton *m_playButton, *m_pauseButton, *m_stopButton, *m_ejectButton;
 103   wxStaticText *m_fileType, *m_infoText;
 104   wxWindow *m_video_window;
 105
 106   wxPanel *m_panel;
 107   wxSizer *m_sizer;
 108
 109   wxTimer *m_refreshTimer;
 110
 111 };
 112
 113 // ----------------------------------------------------------------------------
 114 // constants
 115 // ----------------------------------------------------------------------------
 116
 117 // IDs for the controls and the menu commands
 118 enum
 119 {
 120     // menu items
 121     MMBoard_Quit = 1,
 122     MMBoard_Open,
 123     MMBoard_About,
 124     MMBoard_PositionSlider,
 125     MMBoard_PlayButton,
 126     MMBoard_PauseButton,
 127     MMBoard_ResumeButton,
 128     MMBoard_StopButton,
 129     MMBoard_EjectButton,
 130     MMBoard_RefreshInfo
 131 };
 132
 133 // ----------------------------------------------------------------------------
 134 // event tables and other macros for wxWindows
 135 // ----------------------------------------------------------------------------
 136
 137 BEGIN_EVENT_TABLE(MMBoardFrame, wxFrame)
 138   EVT_MENU(MMBoard_Quit,  MMBoardFrame::OnQuit)
 139   EVT_MENU(MMBoard_About, MMBoardFrame::OnAbout)
 140   EVT_MENU(MMBoard_Open, MMBoardFrame::OnOpen)
 141   EVT_BUTTON(MMBoard_PlayButton, MMBoardFrame::OnPlay)
 142   EVT_BUTTON(MMBoard_StopButton, MMBoardFrame::OnStop)
 143   EVT_BUTTON(MMBoard_PauseButton, MMBoardFrame::OnPause)
 144   EVT_CUSTOM(wxEVT_TIMER, MMBoard_RefreshInfo, MMBoardFrame::OnRefreshInfo)
 145 END_EVENT_TABLE()
 146
 147 // ---------------------------------------------------------------------------
 148 // Main board application launcher
 149 // ---------------------------------------------------------------------------
 150
 151 IMPLEMENT_APP(MMBoardApp)
 152
 153 // ============================================================================
 154 // implementation
 155 // ============================================================================
 156
 157 // ----------------------------------------------------------------------------
 158 // the application class
 159 // ----------------------------------------------------------------------------
 160
 161 bool MMBoardApp::OnInit()
 162 {
 163     // create the main application window
 164     MMBoardFrame *frame = new MMBoardFrame("Multimedia Board",
 165                                  wxPoint(50, 50), wxSize(450, 340));
 166
 167     // and show it (the frames, unlike simple controls, are not shown when
 168     // created initially)
 169     frame->Show(TRUE);
 170
 171     m_caps = TestMultimediaCaps();
 172
 173     if (!m_caps) {
 174       wxMessageBox("Your system has no multimedia capabilities. We are exiting now.", "Major error !", wxOK | wxICON_ERROR, NULL);
 175       return FALSE;
 176     }
 177
 178     wxString msg;
 179     msg.Printf("Detected : %s%s%s", (m_caps & MM_SOUND_OSS) ? "OSS " : "",
 180                                     (m_caps & MM_SOUND_ESD) ? "ESD " : "",
 181                                     (m_caps & MM_SOUND_WIN) ? "WIN" : "");
 182
 183     wxMessageBox(msg, "Good !", wxOK | wxICON_INFORMATION, NULL);
 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 wxUint8 MMBoardApp::TestMultimediaCaps()
 192 {
 193   wxSoundStream *dev;
 194   wxUint8 caps;
 195
 196   caps = 0;
 197
 198 #ifdef __UNIX__
 199   // We test the OSS (Open Sound System) support.
 200
 201   dev = new wxSoundStreamOSS();
 202   if (dev->GetError() == wxSOUND_NOERR)
 203     caps |= MM_SOUND_OSS;
 204   delete dev;
 205
 206   // We now test the ESD support
 207
 208   dev = new wxSoundStreamESD();
 209   if (dev->GetError() == wxSOUND_NOERR)
 210     caps |= MM_SOUND_ESD;
 211   delete dev;
 212 #endif
 213
 214 #ifdef __WIN32__
 215   // We test the Windows sound support.
 216
 217   dev = new wxSoundStreamWin();
 218   if (dev->GetError() == wxSOUND_NOERR)
 219     caps |= MM_SOUND_WIN;
 220   delete dev;
 221 #endif
 222
 223   return caps;
 224 }
 225
 226 // ----------------------------------------------------------------------------
 227 // main frame
 228 // ----------------------------------------------------------------------------
 229
 230 // frame constructor
 231 MMBoardFrame::MMBoardFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 232        : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 233 {
 234 #ifdef __WXMAC__
 235     // we need this in order to allow the about menu relocation, since ABOUT is
 236     // not the default id of the about menu
 237     wxApp::s_macAboutMenuItemId = MMBoard_About;
 238 #endif
 239
 240     // set the frame icon
 241     SetIcon(wxICON(mondrian));
 242
 243     // create a menu bar
 244     wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF);
 245
 246     // the "About" item should be in the help menu
 247     wxMenu *helpMenu = new wxMenu;
 248     helpMenu->Append(MMBoard_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
 249
 250     menuFile->Append(MMBoard_Open, _T("&Open\tAlt-O"), _T("Open file"));
 251     menuFile->AppendSeparator();
 252     menuFile->Append(MMBoard_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
 253
 254     // now append the freshly created menu to the menu bar...
 255     wxMenuBar *menuBar = new wxMenuBar();
 256     menuBar->Append(menuFile, _T("&File"));
 257     menuBar->Append(helpMenu, _T("&Help"));
 258
 259     // ... and attach this menu bar to the frame
 260     SetMenuBar(menuBar);
 261
 262 #if wxUSE_STATUSBAR
 263     // create a status bar just for fun (by default with 1 pane only)
 264     CreateStatusBar(3);
 265     SetStatusText(_T("Welcome to wxWindows!"));
 266 #endif // wxUSE_STATUSBAR
 267
 268     // Misc variables
 269     m_opened_file = NULL;
 270
 271     m_panel = new wxPanel(this, -1);
 272
 273     // Initialize main slider
 274     m_positionSlider = new wxSlider( m_panel, MMBoard_PositionSlider, 0, 0, 60,
 275                                      wxDefaultPosition, wxSize(300, -1),
 276                                      wxSL_HORIZONTAL | wxSL_AUTOTICKS);
 277     m_positionSlider->SetPageSize(60);  // 60 secs
 278
 279     // Initialize info panel
 280     wxPanel *infoPanel = new wxPanel( m_panel, -1);
 281     infoPanel->SetBackgroundColour(*wxBLACK);
 282     infoPanel->SetForegroundColour(*wxWHITE);
 283
 284     wxBoxSizer *infoSizer = new wxBoxSizer(wxVERTICAL);
 285
 286     m_fileType = new wxStaticText(infoPanel, -1, _T(""));
 287     wxStaticLine *line = new wxStaticLine(infoPanel, -1);
 288     m_infoText = new wxStaticText(infoPanel, -1, "");
 289
 290     UpdateInfoText();
 291
 292     infoSizer->Add(m_fileType, 0, wxGROW | wxALL, 1);
 293     infoSizer->Add(line, 0, wxGROW | wxCENTRE, 20);
 294     infoSizer->Add(m_infoText, 0, wxGROW | wxALL, 1);
 295
 296     infoPanel->SetSizer(infoSizer);
 297     infoPanel->SetAutoLayout(TRUE);
 298
 299     // Bitmap button panel
 300     wxBoxSizer *buttonSizer = new wxBoxSizer(wxHORIZONTAL);
 301
 302     wxBitmap *play_bmp = new wxBitmap(play_back_xpm);
 303     wxBitmap *stop_bmp = new wxBitmap(stop_back_xpm);
 304     wxBitmap *eject_bmp = new wxBitmap(eject_xpm);
 305     wxBitmap *pause_bmp = new wxBitmap(pause_xpm);
 306
 307     m_playButton = new wxBitmapButton(m_panel, MMBoard_PlayButton, *play_bmp);
 308     m_playButton->Enable(FALSE);
 309     m_pauseButton = new wxBitmapButton(m_panel, MMBoard_PauseButton, *pause_bmp);
 310     m_pauseButton->Enable(FALSE);
 311     m_stopButton = new wxBitmapButton(m_panel, MMBoard_StopButton, *stop_bmp);
 312     m_stopButton->Enable(FALSE);
 313     m_ejectButton = new wxBitmapButton(m_panel, MMBoard_EjectButton, *eject_bmp);
 314     m_ejectButton->Enable(FALSE);
 315
 316     buttonSizer->Add(m_playButton, 0, wxALL, 2);
 317     buttonSizer->Add(m_pauseButton, 0, wxALL, 2);
 318     buttonSizer->Add(m_stopButton, 0, wxALL, 2);
 319     buttonSizer->Add(m_ejectButton, 0, wxALL, 2);
 320
 321     // Top sizer
 322     m_sizer = new wxBoxSizer(wxVERTICAL);
 323     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 324     m_sizer->Add(m_positionSlider, 0, wxCENTRE | wxGROW | wxALL, 2);
 325     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 326     m_sizer->Add(buttonSizer, 0, wxALL, 0);
 327     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 328     m_sizer->Add(infoPanel, 1, wxCENTRE | wxGROW, 0);
 329
 330     m_panel->SetSizer(m_sizer);
 331     m_panel->SetAutoLayout(TRUE);
 332     m_sizer->Fit(this);
 333     m_sizer->SetSizeHints(this);
 334
 335     // Timer
 336     m_refreshTimer = new wxTimer(this, MMBoard_RefreshInfo);
 337
 338     // Video window
 339     m_video_window = NULL;
 340
 341     // Multimedia file
 342     m_opened_file = NULL;
 343 }
 344
 345 MMBoardFrame::~MMBoardFrame()
 346 {
 347   if (m_opened_file)
 348     delete m_opened_file;
 349
 350   delete m_refreshTimer;
 351 }
 352
 353 void MMBoardFrame::OpenVideoWindow()
 354 {
 355   if (m_video_window)
 356     return;
 357
 358   m_video_window = new wxWindow(m_panel, -1, wxDefaultPosition, wxSize(400, 400));
 359   m_video_window->SetBackgroundColour(*wxBLACK);
 360   m_sizer->Prepend(m_video_window, 0, wxGROW | wxSHRINK | wxCENTRE, 0);
 361
 362   m_sizer->Fit(this);
 363 }
 364
 365 void MMBoardFrame::CloseVideoWindow()
 366 {
 367   if (!m_video_window)
 368     return;
 369
 370   m_sizer->Remove(m_video_window);
 371   delete m_video_window;
 372   m_video_window = NULL;
 373
 374   m_sizer->Fit(this);
 375 }
 376
 377 // event handlers
 378
 379 void MMBoardFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 380 {
 381     // TRUE is to force the frame to close
 382     Close(TRUE);
 383 }
 384
 385 void MMBoardFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 386 {
 387     wxString msg;
 388     msg.Printf( _T("wxWindows Multimedia board v1.0a, wxMMedia v2.0a:\n")
 389                 _T("an example of the capabilities of the wxWindows multimedia classes.\n")
 390                 _T("Copyright 1999, 2000, Guilhem Lavaux.\n"));
 391
 392     wxMessageBox(msg, "About MMBoard", wxOK | wxICON_INFORMATION, this);
 393 }
 394
 395 void MMBoardFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
 396 {
 397   wxString selected_file;
 398
 399   if (m_opened_file) {
 400     if (!m_opened_file->IsStopped()) {
 401       wxCommandEvent event2;
 402       OnStop(event2);
 403     }
 404     delete m_opened_file;
 405   }
 406
 407   // select a file to be opened
 408   selected_file = wxLoadFileSelector("multimedia", "*", NULL, this);
 409   if (selected_file.IsNull())
 410     return;
 411
 412   m_opened_file = MMBoardManager::Open(selected_file);
 413
 414   // Change the range values of the slider.
 415   MMBoardTime length;
 416
 417   length = m_opened_file->GetLength();
 418   m_positionSlider->SetRange(0, length.hours * 3600 + length.minutes * 60 + length.seconds);
 419
 420   // Update misc info
 421   UpdateMMedInfo();
 422
 423   SetStatusText(selected_file, 2);
 424
 425   // Update info text
 426   UpdateInfoText();
 427
 428   // Enable a few buttons
 429   m_playButton->Enable(TRUE);
 430   m_ejectButton->Enable(TRUE);
 431
 432   if (m_opened_file->NeedWindow()) {
 433     OpenVideoWindow();
 434     m_opened_file->SetWindow(m_video_window);
 435   } else
 436     CloseVideoWindow();
 437 }
 438
 439 void MMBoardFrame::UpdateInfoText()
 440 {
 441   wxString infotext1, infotext2;
 442
 443   if (m_opened_file) {
 444     infotext1 = _T("File type:\n\t");
 445     infotext1 += m_opened_file->GetStringType() + _T("\n");
 446
 447     infotext2 = _T("File informations:\n\n");
 448     infotext2 += m_opened_file->GetStringInformation();
 449   } else {
 450     infotext1 = _T("File type: \n\tNo file opened");
 451     infotext2 = _T("File informations:\nNo information\n\n\n\n\n");
 452   }
 453
 454   m_fileType->SetLabel(infotext1);
 455   m_infoText->SetLabel(infotext2);
 456 }
 457
 458 void MMBoardFrame::UpdateMMedInfo()
 459 {
 460   wxString temp_string;
 461   MMBoardTime current, length;
 462
 463   if (m_opened_file) {
 464     current = m_opened_file->GetPosition();
 465     length  = m_opened_file->GetLength();
 466   }
 467
 468   // We refresh the status bar
 469   temp_string.Printf("%02d:%02d / %02d:%02d", current.hours * 60 + current.minutes,
 470                      current.seconds, length.hours * 60 + length.minutes, length.seconds);
 471   SetStatusText(temp_string, 1);
 472
 473   // We set the slider position
 474   m_positionSlider->SetValue(current.hours * 3600 + current.minutes * 60 + current.seconds);
 475 }
 476
 477 // ----------------------------------------------------------------------------
 478 // Playing management, refreshers, ...
 479
 480 void MMBoardFrame::OnRefreshInfo(wxEvent& WXUNUSED(event))
 481 {
 482   UpdateMMedInfo();
 483
 484   if (m_opened_file->IsStopped()) {
 485     m_refreshTimer->Stop();
 486     m_playButton->Enable(TRUE);
 487     m_stopButton->Enable(FALSE);
 488     m_pauseButton->Enable(FALSE);
 489   }
 490 }
 491
 492 void MMBoardFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
 493 {
 494   m_stopButton->Enable(TRUE);
 495   m_pauseButton->Enable(TRUE);
 496   m_playButton->Enable(FALSE);
 497
 498   if (m_opened_file->IsPaused()) {
 499     m_opened_file->Resume();
 500     return;
 501   }
 502
 503   m_refreshTimer->Start(1000, FALSE);
 504
 505   m_opened_file->Play();
 506
 507   m_stopButton->Enable(TRUE);
 508   m_pauseButton->Enable(TRUE);
 509   m_playButton->Enable(FALSE);
 510 }
 511
 512 void MMBoardFrame::OnStop(wxCommandEvent& WXUNUSED(event))
 513 {
 514   m_opened_file->Stop();
 515   m_refreshTimer->Stop();
 516
 517   m_stopButton->Enable(FALSE);
 518   m_playButton->Enable(TRUE);
 519
 520   UpdateMMedInfo();
 521 }
 522
 523 void MMBoardFrame::OnPause(wxCommandEvent& WXUNUSED(event))
 524 {
 525   m_opened_file->Pause();
 526
 527   m_playButton->Enable(TRUE);
 528   m_pauseButton->Enable(FALSE);
 529 }