src/mgl/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Author:      Vaclav Slavik
   4 //              based on GTK and MSW implementations
   5 // Id:          $Id$
   6 // Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11     #pragma implementation "app.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/settings.h"
  24     #include "wx/frame.h"
  25     #include "wx/dialog.h"
  26     #include "wx/log.h"
  27     #include "wx/intl.h"
  28 #endif
  29
  30 #include "wx/app.h"
  31 #include "wx/evtloop.h"
  32 #include "wx/module.h"
  33 #include "wx/fontutil.h"
  34 #include "wx/univ/theme.h"
  35 #include "wx/univ/renderer.h"
  36 #include "wx/univ/colschem.h"
  37 #include "wx/sysopt.h"
  38 #include "wx/mgl/private.h"
  39
  40 //-----------------------------------------------------------------------------
  41 // wxApp::Exit()
  42 //-----------------------------------------------------------------------------
  43
  44 void wxApp::Exit()
  45 {
  46     MGL_exit();
  47     exit(0);
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51 // wxYield
  52 //-----------------------------------------------------------------------------
  53
  54 static bool gs_inYield = false;
  55
  56 bool wxApp::Yield(bool onlyIfNeeded)
  57 {
  58     if ( gs_inYield )
  59     {
  60         if ( !onlyIfNeeded )
  61         {
  62             wxFAIL_MSG( wxT("wxYield called recursively" ) );
  63         }
  64
  65         return false;
  66     }
  67
  68 #if wxUSE_THREADS
  69     if ( !wxThread::IsMain() )
  70     {
  71         // can't process events from other threads, MGL is thread-unsafe
  72         return true;
  73     }
  74 #endif // wxUSE_THREADS
  75
  76     gs_inYield = true;
  77
  78     wxLog::Suspend();
  79
  80     if ( wxEventLoop::GetActive() )
  81     {
  82         while (wxEventLoop::GetActive()->Pending())
  83             wxEventLoop::GetActive()->Dispatch();
  84     }
  85
  86     /* it's necessary to call ProcessIdle() to update the frames sizes which
  87        might have been changed (it also will update other things set from
  88        OnUpdateUI() which is a nice (and desired) side effect) */
  89     while (wxTheApp->ProcessIdle()) { }
  90
  91     wxLog::Resume();
  92
  93     gs_inYield = false;
  94
  95     return true;
  96 }
  97
  98
  99 //-----------------------------------------------------------------------------
 100 // wxWakeUpIdle
 101 //-----------------------------------------------------------------------------
 102
 103 void wxApp::WakeUpIdle()
 104 {
 105 #if wxUSE_THREADS
 106     if (!wxThread::IsMain())
 107         wxMutexGuiEnter();
 108 #endif
 109
 110     while (wxTheApp->ProcessIdle())
 111         ;
 112
 113 #if wxUSE_THREADS
 114     if (!wxThread::IsMain())
 115         wxMutexGuiLeave();
 116 #endif
 117 }
 118
 119 //-----------------------------------------------------------------------------
 120 // Root window
 121 //-----------------------------------------------------------------------------
 122
 123 class wxRootWindow : public wxWindow
 124 {
 125     public:
 126         wxRootWindow() : wxWindow(NULL, wxID_ANY)
 127         {
 128             SetMGLwindow_t(MGL_wmGetRootWindow(g_winMng));
 129             SetBackgroundColour(wxTHEME_COLOUR(DESKTOP));
 130         }
 131         ~wxRootWindow()
 132         {
 133             // we don't want to delete MGL_WM's rootWnd
 134             m_wnd = NULL;
 135         }
 136
 137         virtual bool AcceptsFocus() const { return false; }
 138
 139         DECLARE_DYNAMIC_CLASS(wxRootWindow)
 140 };
 141
 142 IMPLEMENT_DYNAMIC_CLASS(wxRootWindow, wxWindow)
 143
 144 static wxRootWindow *gs_rootWindow = NULL;
 145
 146 //-----------------------------------------------------------------------------
 147 // MGL initialization
 148 //-----------------------------------------------------------------------------
 149
 150 static bool wxCreateMGL_WM(const wxVideoMode& displayMode)
 151 {
 152     int mode;
 153     int refresh = MGL_DEFAULT_REFRESH;
 154
 155 #if wxUSE_SYSTEM_OPTIONS
 156     if ( wxSystemOptions::HasOption(wxT("mgl.screen-refresh")) )
 157         refresh = wxSystemOptions::GetOptionInt(wxT("mgl.screen-refresh"));
 158 #endif
 159
 160     mode = MGL_findMode(displayMode.GetWidth(),
 161                         displayMode.GetHeight(),
 162                         displayMode.GetDepth());
 163     if ( mode == -1 )
 164     {
 165         wxLogError(_("Mode %ix%i-%i not available."),
 166                      displayMode.GetWidth(),
 167                      displayMode.GetHeight(),
 168                      displayMode.GetDepth());
 169         return false;
 170     }
 171     g_displayDC = new MGLDisplayDC(mode, 1, refresh);
 172     if ( !g_displayDC->isValid() )
 173     {
 174         delete g_displayDC;
 175         g_displayDC = NULL;
 176         return false;
 177     }
 178
 179     g_winMng = MGL_wmCreate(g_displayDC->getDC());
 180     if (!g_winMng)
 181         return false;
 182
 183     return true;
 184 }
 185
 186 static void wxDestroyMGL_WM()
 187 {
 188     if ( g_winMng )
 189     {
 190         MGL_wmDestroy(g_winMng);
 191         g_winMng = NULL;
 192     }
 193     if ( g_displayDC )
 194     {
 195         delete g_displayDC;
 196         g_displayDC = NULL;
 197     }
 198 }
 199
 200 //-----------------------------------------------------------------------------
 201 // wxApp
 202 //-----------------------------------------------------------------------------
 203
 204 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 205
 206 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 207     EVT_IDLE(wxAppBase::OnIdle)
 208 END_EVENT_TABLE()
 209
 210
 211 wxApp::wxApp()
 212 {
 213 }
 214
 215 wxApp::~wxApp()
 216 {
 217 }
 218
 219 wxVideoMode wxGetDefaultDisplayMode()
 220 {
 221     wxString mode;
 222     unsigned w, h, bpp;
 223
 224     if ( !wxGetEnv(wxT("WXMODE"), &mode) ||
 225          (wxSscanf(mode.c_str(), _T("%ux%u-%u"), &w, &h, &bpp) != 3) )
 226     {
 227         w = 640, h = 480, bpp = 16;
 228     }
 229
 230     return wxVideoMode(w, h, bpp);
 231 }
 232
 233 bool wxApp::SetDisplayMode(const wxVideoMode& mode)
 234 {
 235     if ( !mode.IsOk() )
 236     {
 237         return false;
 238     }
 239     if ( g_displayDC != NULL )
 240     {
 241         // FIXME_MGL -- we currently don't allow to switch video mode
 242         // more than once. This can hopefully be changed...
 243         wxFAIL_MSG(wxT("Can't change display mode after intialization!"));
 244         return false;
 245     }
 246
 247     if ( !wxCreateMGL_WM(mode) )
 248         return false;
 249     gs_rootWindow = new wxRootWindow;
 250
 251     m_displayMode = mode;
 252
 253     return true;
 254 }
 255
 256 bool wxApp::OnInitGui()
 257 {
 258     if ( !wxAppBase::OnInitGui() )
 259         return false;
 260
 261 #ifdef __WXDEBUG__
 262     // MGL redirects stdout and stderr to physical console, so lets redirect
 263     // it to file in debug build. Do it only when WXSTDERR environment variable is set
 264     wxString redirect;
 265     if ( wxGetEnv(wxT("WXSTDERR"), &redirect) )
 266         freopen(redirect.mb_str(), "wt", stderr);
 267 #endif // __WXDEBUG__
 268
 269     wxLog *oldLog = wxLog::SetActiveTarget(new wxLogGui);
 270     if ( oldLog ) delete oldLog;
 271
 272     return true;
 273 }
 274
 275 bool wxApp::Initialize(int& argc, wxChar **argv)
 276 {
 277 #ifdef __DJGPP__
 278     // VS: disable long filenames under DJGPP as the very first thing,
 279     //     since SciTech MGL doesn't like them much...
 280     wxSetEnv(wxT("LFN"), wxT("N"));
 281 #endif
 282
 283     // intialize MGL before creating wxFontsManager since it uses MGL funcs
 284     if ( MGL_init(".", NULL) == 0 )
 285     {
 286         wxLogError(_("Cannot initialize SciTech MGL!"));
 287         return false;
 288     }
 289
 290     // must do it before calling wxAppBase::Initialize(), because fonts are
 291     // needed by stock lists which are created there
 292     wxTheFontsManager = new wxFontsManager;
 293
 294     if ( !wxAppBase::Initialize(argc, argv) )
 295     {
 296         delete wxTheFontsManager;
 297         wxTheFontsManager = NULL;
 298         MGL_exit();
 299         return false;
 300     }
 301
 302 #if wxUSE_INTL
 303     wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
 304 #endif
 305
 306     return true;
 307 }
 308
 309 // Modules are cleaned up after wxApp::CleanUp(), and some modules may
 310 // require MGL to still be alive, e.g. the stock fonts need the fonts
 311 // manager. So append this module last minute in wxApp::CleanUp() to close
 312 // down MGL after all the other modules have been cleaned up.
 313 //
 314 struct wxMGLFinalCleanup: public wxModule
 315 {
 316     bool OnInit() { return true; }
 317
 318     void OnExit()
 319     {
 320         delete wxTheFontsManager;
 321         wxTheFontsManager = (wxFontsManager*) NULL;
 322
 323         wxDestroyMGL_WM();
 324         MGL_exit();
 325     }
 326 };
 327
 328 void wxApp::CleanUp()
 329 {
 330     delete gs_rootWindow;
 331
 332     wxAppBase::CleanUp();
 333
 334     wxModule::RegisterModule(new wxMGLFinalCleanup);
 335 }
 336