src/mgl/app.cpp

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