| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: app.cpp |
| 3 | // Purpose: wxApp |
| 4 | // Author: AUTHOR |
| 5 | // Modified by: |
| 6 | // Created: ??/??/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) AUTHOR |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "app.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/frame.h" |
| 17 | #include "wx/app.h" |
| 18 | #include "wx/utils.h" |
| 19 | #include "wx/gdicmn.h" |
| 20 | #include "wx/pen.h" |
| 21 | #include "wx/brush.h" |
| 22 | #include "wx/cursor.h" |
| 23 | #include "wx/icon.h" |
| 24 | #include "wx/palette.h" |
| 25 | #include "wx/dc.h" |
| 26 | #include "wx/dialog.h" |
| 27 | #include "wx/msgdlg.h" |
| 28 | #include "wx/log.h" |
| 29 | #include "wx/module.h" |
| 30 | #include "wx/memory.h" |
| 31 | |
| 32 | #if wxUSE_WX_RESOURCES |
| 33 | #include "wx/resource.h" |
| 34 | #endif |
| 35 | |
| 36 | #include <string.h> |
| 37 | |
| 38 | extern char *wxBuffer; |
| 39 | extern wxList wxPendingDelete; |
| 40 | |
| 41 | wxApp *wxTheApp = NULL; |
| 42 | |
| 43 | #if !USE_SHARED_LIBRARY |
| 44 | IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) |
| 45 | BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) |
| 46 | EVT_IDLE(wxApp::OnIdle) |
| 47 | END_EVENT_TABLE() |
| 48 | #endif |
| 49 | |
| 50 | long wxApp::sm_lastMessageTime = 0; |
| 51 | |
| 52 | bool wxApp::Initialize() |
| 53 | { |
| 54 | #ifdef __WXMSW__ |
| 55 | wxBuffer = new char[1500]; |
| 56 | #else |
| 57 | wxBuffer = new char[BUFSIZ + 512]; |
| 58 | #endif |
| 59 | |
| 60 | /* No longer used |
| 61 | #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT |
| 62 | |
| 63 | streambuf* sBuf = new wxDebugStreamBuf; |
| 64 | ostream* oStr = new ostream(sBuf) ; |
| 65 | wxDebugContext::SetStream(oStr, sBuf); |
| 66 | #endif |
| 67 | */ |
| 68 | |
| 69 | wxClassInfo::InitializeClasses(); |
| 70 | |
| 71 | wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); |
| 72 | wxTheColourDatabase->Initialize(); |
| 73 | |
| 74 | wxInitializeStockLists(); |
| 75 | wxInitializeStockObjects(); |
| 76 | |
| 77 | #if wxUSE_WX_RESOURCES |
| 78 | wxInitializeResourceSystem(); |
| 79 | #endif |
| 80 | |
| 81 | wxBitmap::InitStandardHandlers(); |
| 82 | |
| 83 | wxModule::RegisterModules(); |
| 84 | wxASSERT( wxModule::InitializeModules() == TRUE ); |
| 85 | |
| 86 | return TRUE; |
| 87 | } |
| 88 | |
| 89 | void wxApp::CleanUp() |
| 90 | { |
| 91 | wxModule::CleanUpModules(); |
| 92 | |
| 93 | #if wxUSE_WX_RESOURCES |
| 94 | wxCleanUpResourceSystem(); |
| 95 | #endif |
| 96 | |
| 97 | wxDeleteStockObjects() ; |
| 98 | |
| 99 | // Destroy all GDI lists, etc. |
| 100 | |
| 101 | delete wxTheBrushList; |
| 102 | wxTheBrushList = NULL; |
| 103 | |
| 104 | delete wxThePenList; |
| 105 | wxThePenList = NULL; |
| 106 | |
| 107 | delete wxTheFontList; |
| 108 | wxTheFontList = NULL; |
| 109 | |
| 110 | delete wxTheBitmapList; |
| 111 | wxTheBitmapList = NULL; |
| 112 | |
| 113 | delete wxTheColourDatabase; |
| 114 | wxTheColourDatabase = NULL; |
| 115 | |
| 116 | wxBitmap::CleanUpHandlers(); |
| 117 | |
| 118 | delete[] wxBuffer; |
| 119 | wxBuffer = NULL; |
| 120 | |
| 121 | wxClassInfo::CleanUpClasses(); |
| 122 | |
| 123 | delete wxTheApp; |
| 124 | wxTheApp = NULL; |
| 125 | |
| 126 | #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT |
| 127 | // At this point we want to check if there are any memory |
| 128 | // blocks that aren't part of the wxDebugContext itself, |
| 129 | // as a special case. Then when dumping we need to ignore |
| 130 | // wxDebugContext, too. |
| 131 | if (wxDebugContext::CountObjectsLeft() > 0) |
| 132 | { |
| 133 | wxTrace("There were memory leaks.\n"); |
| 134 | wxDebugContext::Dump(); |
| 135 | wxDebugContext::PrintStatistics(); |
| 136 | } |
| 137 | // wxDebugContext::SetStream(NULL, NULL); |
| 138 | #endif |
| 139 | |
| 140 | // do it as the very last thing because everything else can log messages |
| 141 | wxLog::DontCreateOnDemand(); |
| 142 | // do it as the very last thing because everything else can log messages |
| 143 | delete wxLog::SetActiveTarget(NULL); |
| 144 | } |
| 145 | |
| 146 | int wxEntry( int argc, char *argv[] ) |
| 147 | { |
| 148 | if (!wxApp::Initialize()) |
| 149 | return FALSE; |
| 150 | if (!wxTheApp) |
| 151 | { |
| 152 | if (!wxApp::GetInitializerFunction()) |
| 153 | { |
| 154 | printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" ); |
| 155 | return 0; |
| 156 | }; |
| 157 | |
| 158 | wxTheApp = (wxApp*) (* wxApp::GetInitializerFunction()) (); |
| 159 | }; |
| 160 | |
| 161 | if (!wxTheApp) |
| 162 | { |
| 163 | printf( "wxWindows error: wxTheApp == NULL\n" ); |
| 164 | return 0; |
| 165 | }; |
| 166 | |
| 167 | wxTheApp->argc = argc; |
| 168 | wxTheApp->argv = argv; |
| 169 | |
| 170 | // GUI-specific initialization, such as creating an app context. |
| 171 | wxTheApp->OnInitGui(); |
| 172 | |
| 173 | // Here frames insert themselves automatically |
| 174 | // into wxTopLevelWindows by getting created |
| 175 | // in OnInit(). |
| 176 | |
| 177 | if (!wxTheApp->OnInit()) return 0; |
| 178 | |
| 179 | int retValue = 0; |
| 180 | |
| 181 | if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun(); |
| 182 | |
| 183 | if (wxTheApp->GetTopWindow()) |
| 184 | { |
| 185 | delete wxTheApp->GetTopWindow(); |
| 186 | wxTheApp->SetTopWindow(NULL); |
| 187 | } |
| 188 | |
| 189 | wxTheApp->DeletePendingObjects(); |
| 190 | |
| 191 | wxTheApp->OnExit(); |
| 192 | |
| 193 | wxApp::CleanUp(); |
| 194 | |
| 195 | return retValue; |
| 196 | }; |
| 197 | |
| 198 | // Static member initialization |
| 199 | wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL; |
| 200 | |
| 201 | wxApp::wxApp() |
| 202 | { |
| 203 | m_topWindow = NULL; |
| 204 | wxTheApp = this; |
| 205 | m_className = ""; |
| 206 | m_wantDebugOutput = TRUE ; |
| 207 | m_appName = ""; |
| 208 | argc = 0; |
| 209 | argv = NULL; |
| 210 | #ifdef __WXMSW__ |
| 211 | m_printMode = wxPRINT_WINDOWS; |
| 212 | #else |
| 213 | m_printMode = wxPRINT_POSTSCRIPT; |
| 214 | #endif |
| 215 | m_exitOnFrameDelete = TRUE; |
| 216 | m_auto3D = TRUE; |
| 217 | } |
| 218 | |
| 219 | bool wxApp::Initialized() |
| 220 | { |
| 221 | if (GetTopWindow()) |
| 222 | return TRUE; |
| 223 | else |
| 224 | return FALSE; |
| 225 | } |
| 226 | |
| 227 | int wxApp::MainLoop() |
| 228 | { |
| 229 | m_keepGoing = TRUE; |
| 230 | |
| 231 | /* TODO: implement your main loop here, calling ProcessIdle in idle time. |
| 232 | while (m_keepGoing) |
| 233 | { |
| 234 | while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) && |
| 235 | ProcessIdle()) {} |
| 236 | if (!DoMessage()) |
| 237 | m_keepGoing = FALSE; |
| 238 | } |
| 239 | */ |
| 240 | |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | // Returns TRUE if more time is needed. |
| 245 | bool wxApp::ProcessIdle() |
| 246 | { |
| 247 | wxIdleEvent event; |
| 248 | event.SetEventObject(this); |
| 249 | ProcessEvent(event); |
| 250 | |
| 251 | return event.MoreRequested(); |
| 252 | } |
| 253 | |
| 254 | void wxApp::ExitMainLoop() |
| 255 | { |
| 256 | m_keepGoing = FALSE; |
| 257 | } |
| 258 | |
| 259 | // Is a message/event pending? |
| 260 | bool wxApp::Pending() |
| 261 | { |
| 262 | /* TODO. |
| 263 | */ |
| 264 | return FALSE; |
| 265 | } |
| 266 | |
| 267 | // Dispatch a message. |
| 268 | void wxApp::Dispatch() |
| 269 | { |
| 270 | /* TODO. |
| 271 | */ |
| 272 | } |
| 273 | |
| 274 | void wxApp::OnIdle(wxIdleEvent& event) |
| 275 | { |
| 276 | static bool inOnIdle = FALSE; |
| 277 | |
| 278 | // Avoid recursion (via ProcessEvent default case) |
| 279 | if (inOnIdle) |
| 280 | return; |
| 281 | |
| 282 | inOnIdle = TRUE; |
| 283 | |
| 284 | // 'Garbage' collection of windows deleted with Close(). |
| 285 | DeletePendingObjects(); |
| 286 | |
| 287 | // flush the logged messages if any |
| 288 | wxLog *pLog = wxLog::GetActiveTarget(); |
| 289 | if ( pLog != NULL && pLog->HasPendingMessages() ) |
| 290 | pLog->Flush(); |
| 291 | |
| 292 | // Send OnIdle events to all windows |
| 293 | bool needMore = SendIdleEvents(); |
| 294 | |
| 295 | if (needMore) |
| 296 | event.RequestMore(TRUE); |
| 297 | |
| 298 | inOnIdle = FALSE; |
| 299 | } |
| 300 | |
| 301 | // Send idle event to all top-level windows |
| 302 | bool wxApp::SendIdleEvents() |
| 303 | { |
| 304 | bool needMore = FALSE; |
| 305 | wxNode* node = wxTopLevelWindows.First(); |
| 306 | while (node) |
| 307 | { |
| 308 | wxWindow* win = (wxWindow*) node->Data(); |
| 309 | if (SendIdleEvents(win)) |
| 310 | needMore = TRUE; |
| 311 | |
| 312 | node = node->Next(); |
| 313 | } |
| 314 | return needMore; |
| 315 | } |
| 316 | |
| 317 | // Send idle event to window and all subwindows |
| 318 | bool wxApp::SendIdleEvents(wxWindow* win) |
| 319 | { |
| 320 | bool needMore = FALSE; |
| 321 | |
| 322 | wxIdleEvent event; |
| 323 | event.SetEventObject(win); |
| 324 | win->ProcessEvent(event); |
| 325 | |
| 326 | if (event.MoreRequested()) |
| 327 | needMore = TRUE; |
| 328 | |
| 329 | wxNode* node = win->GetChildren().First(); |
| 330 | while (node) |
| 331 | { |
| 332 | wxWindow* win = (wxWindow*) node->Data(); |
| 333 | if (SendIdleEvents(win)) |
| 334 | needMore = TRUE; |
| 335 | |
| 336 | node = node->Next(); |
| 337 | } |
| 338 | return needMore ; |
| 339 | } |
| 340 | |
| 341 | void wxApp::DeletePendingObjects() |
| 342 | { |
| 343 | wxNode *node = wxPendingDelete.First(); |
| 344 | while (node) |
| 345 | { |
| 346 | wxObject *obj = (wxObject *)node->Data(); |
| 347 | |
| 348 | delete obj; |
| 349 | |
| 350 | if (wxPendingDelete.Member(obj)) |
| 351 | delete node; |
| 352 | |
| 353 | // Deleting one object may have deleted other pending |
| 354 | // objects, so start from beginning of list again. |
| 355 | node = wxPendingDelete.First(); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | wxLog* wxApp::CreateLogTarget() |
| 360 | { |
| 361 | return new wxLogGui; |
| 362 | } |
| 363 | |
| 364 | wxWindow* wxApp::GetTopWindow() const |
| 365 | { |
| 366 | if (m_topWindow) |
| 367 | return m_topWindow; |
| 368 | else if (wxTopLevelWindows.Number() > 0) |
| 369 | return (wxWindow*) wxTopLevelWindows.First()->Data(); |
| 370 | else |
| 371 | return NULL; |
| 372 | } |
| 373 | |
| 374 | void wxExit() |
| 375 | { |
| 376 | wxApp::CleanUp(); |
| 377 | /* |
| 378 | * TODO: Exit in some platform-specific way. Not recommended that the app calls this: |
| 379 | * only for emergencies. |
| 380 | */ |
| 381 | } |
| 382 | |
| 383 | // Yield to other processes |
| 384 | bool wxYield() |
| 385 | { |
| 386 | /* |
| 387 | * TODO |
| 388 | */ |
| 389 | return TRUE; |
| 390 | } |
| 391 | |