#include "wx/event.h" // for the base class
#include "wx/build.h"
+#include "wx/cmdargs.h" // for wxCmdLineArgsArray used by wxApp::argv
#include "wx/init.h" // we must declare wxEntry()
#include "wx/intl.h" // for wxLayoutDirection
-class WXDLLIMPEXP_BASE wxAppConsole;
-class WXDLLIMPEXP_BASE wxAppTraits;
-class WXDLLIMPEXP_BASE wxCmdLineParser;
-class WXDLLIMPEXP_BASE wxLog;
-class WXDLLIMPEXP_BASE wxMessageOutput;
+class WXDLLIMPEXP_FWD_BASE wxAppConsole;
+class WXDLLIMPEXP_FWD_BASE wxAppTraits;
+class WXDLLIMPEXP_FWD_BASE wxCmdLineParser;
+class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;
+class WXDLLIMPEXP_FWD_BASE wxLog;
+class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
#if wxUSE_GUI
- class WXDLLEXPORT wxEventLoop;
- struct WXDLLIMPEXP_CORE wxVideoMode;
+ struct WXDLLIMPEXP_FWD_CORE wxVideoMode;
+ class WXDLLIMPEXP_FWD_CORE wxWindow;
#endif
// ----------------------------------------------------------------------------
};
// ----------------------------------------------------------------------------
-// wxAppConsole: wxApp for non-GUI applications
+// global variables
// ----------------------------------------------------------------------------
-class WXDLLIMPEXP_BASE wxAppConsole : public wxEvtHandler
+// use of this list is strongly deprecated, use wxApp ScheduleForDestruction()
+// and IsScheduledForDestruction() methods instead of this list directly, it
+// is here for compatibility purposes only
+extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
+
+// ----------------------------------------------------------------------------
+// wxAppConsoleBase: wxApp for non-GUI applications
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxAppConsoleBase : public wxEvtHandler
{
public:
// ctor and dtor
- wxAppConsole();
- virtual ~wxAppConsole();
+ wxAppConsoleBase();
+ virtual ~wxAppConsoleBase();
// the virtual functions which may/must be overridden in the derived class
// class OnInit() to do it.
virtual bool OnInit();
- // this is here only temporary hopefully (FIXME)
- virtual bool OnInitGui() { return true; }
-
// This is the replacement for the normal main(): all program work should
// be done here. When OnRun() returns, the programs starts shutting down.
- virtual int OnRun() = 0;
+ virtual int OnRun();
+
+ // This is called by wxEventLoopBase::SetActive(): you should put the code
+ // which needs an active event loop here.
+ // Note that this function is called whenever an event loop is activated;
+ // you may want to use wxEventLoopBase::IsMain() to perform initialization
+ // specific for the app's main event loop.
+ virtual void OnEventLoopEnter(wxEventLoopBase* WXUNUSED(loop)) {}
// This is only called if OnInit() returned true so it's a good place to do
// any cleanup matching the initializations done there.
virtual int OnExit();
+ // This is called by wxEventLoopBase::OnExit() for each event loop which
+ // is exited.
+ virtual void OnEventLoopExit(wxEventLoopBase* WXUNUSED(loop)) {}
+
// This is the very last function called on wxApp object before it is
// destroyed. If you override it (instead of overriding OnExit() as usual)
// do not forget to call the base class version!
// Called from wxExit() function, should terminate the application a.s.a.p.
virtual void Exit();
- // Return the layout direction for the current locale
- virtual wxLayoutDirection GetLayoutDirection() const;
-
// application info: name, description, vendor
// -------------------------------------------
}
void SetAppName(const wxString& name) { m_appName = name; }
+ // set/get the application display name: the display name is the name
+ // shown to the user in titles, reports, etc while the app name is
+ // used for paths, config, and other places the user doesn't see
+ //
+ // so the app name could be myapp while display name could be "My App"
+ wxString GetAppDisplayName() const
+ {
+ return m_appDisplayName.empty() ? GetAppName().Capitalize()
+ : m_appDisplayName;
+ }
+
+ void SetAppDisplayName(const wxString& name) { m_appDisplayName = name; }
+
// set/get the app class name
wxString GetClassName() const { return m_className; }
void SetClassName(const wxString& name) { m_className = name; }
const wxString& GetVendorName() const { return m_vendorName; }
void SetVendorName(const wxString& name) { m_vendorName = name; }
+ // set/get the vendor display name: the display name is shown
+ // in titles/reports/dialogs to the user, while the vendor name
+ // is used in some areas such as wxConfig, wxStandardPaths, etc
+ const wxString& GetVendorDisplayName() const
+ {
+ return m_vendorDisplayName.empty() ? GetVendorName()
+ : m_vendorDisplayName;
+ }
+ void SetVendorDisplayName(const wxString& name)
+ {
+ m_vendorDisplayName = name;
+ }
+
// cmd line parsing stuff
// ----------------------
// either should be configurable by the user (then he can change the
// default behaviour simply by overriding CreateTraits() and returning his
// own traits object) or which is GUI/console dependent as then wxAppTraits
- // allows us to abstract the differences behind the common faรงade
+ // allows us to abstract the differences behind the common facade
wxAppTraits *GetTraits();
- // the functions below shouldn't be used now that we have wxAppTraits
-#if WXWIN_COMPATIBILITY_2_4
-
-#if wxUSE_LOG
- // override this function to create default log target of arbitrary
- // user-defined class (default implementation creates a wxLogGui
- // object) -- this log object is used by default by all wxLogXXX()
- // functions.
- wxDEPRECATED( virtual wxLog *CreateLogTarget() );
-#endif // wxUSE_LOG
-
- // similar to CreateLogTarget() but for the global wxMessageOutput
- // object
- wxDEPRECATED( virtual wxMessageOutput *CreateMessageOutput() );
+ // this function provides safer access to traits object than
+ // wxTheApp->GetTraits() during startup or termination when the global
+ // application object itself may be unavailable
+ //
+ // of course, it still returns NULL in this case and the caller must check
+ // for it
+ static wxAppTraits *GetTraitsIfExists();
-#endif // WXWIN_COMPATIBILITY_2_4
+ // returns the main event loop instance, i.e. the event loop which is started
+ // by OnRun() and which dispatches all events sent from the native toolkit
+ // to the application (except when new event loops are temporarily set-up).
+ // The returned value maybe NULL. Put initialization code which needs a
+ // non-NULL main event loop into OnEventLoopEnter().
+ wxEventLoopBase* GetMainLoop() const
+ { return m_mainLoop; }
// event processing functions
// had been already processed or won't be processed at all, respectively
virtual int FilterEvent(wxEvent& event);
+ // return true if we're running event loop, i.e. if the events can
+ // (already) be dispatched
+ static bool IsMainLoopRunning();
+
#if wxUSE_EXCEPTIONS
+ // execute the functor to handle the given event
+ //
+ // this is a generalization of HandleEvent() below and the base class
+ // implementation of CallEventHandler() still calls HandleEvent() for
+ // compatibility for functors which are just wxEventFunctions (i.e. methods
+ // of wxEvtHandler)
+ virtual void CallEventHandler(wxEvtHandler *handler,
+ wxEventFunctor& functor,
+ wxEvent& event) const;
+
// call the specified handler on the given object with the given event
//
// this method only exists to allow catching the exceptions thrown by any
wxEvent& event) const;
// Called when an unhandled C++ exception occurs inside OnRun(): note that
- // the exception type is lost by now, so if you really want to handle the
- // exception you should override OnRun() and put a try/catch around
- // MainLoop() call there or use OnExceptionInMainLoop()
- virtual void OnUnhandledException() { }
+ // the main event loop has already terminated by now and the program will
+ // exit, if you need to really handle the exceptions you need to override
+ // OnExceptionInMainLoop()
+ virtual void OnUnhandledException();
+
+ // Function called if an uncaught exception is caught inside the main
+ // event loop: it may return true to continue running the event loop or
+ // false to stop it (in the latter case it may rethrow the exception as
+ // well)
+ virtual bool OnExceptionInMainLoop();
+
#endif // wxUSE_EXCEPTIONS
- // process all events in the wxPendingEvents list -- it is necessary to
- // call this function to process posted events. This happens during each
+
+ // pending events
+ // --------------
+
+ // IMPORTANT: all these methods conceptually belong to wxEventLoopBase
+ // but for many reasons we need to allow queuing of events
+ // even when there's no event loop (e.g. in wxApp::OnInit);
+ // this feature is used e.g. to queue events on secondary threads
+ // or in wxPython to use wx.CallAfter before the GUI is initialized
+
+ // process all events in the m_handlersWithPendingEvents list -- it is necessary
+ // to call this function to process posted events. This happens during each
// event loop iteration in GUI mode but if there is no main loop, it may be
// also called directly.
virtual void ProcessPendingEvents();
- // doesn't do anything in this class, just a hook for GUI wxApp
- virtual bool Yield(bool WXUNUSED(onlyIfNeeded) = false) { return true; }
+ // check if there are pending events on global pending event list
+ bool HasPendingEvents() const;
+
+ // temporary suspends processing of the pending events
+ void SuspendProcessingOfPendingEvents();
+
+ // resume processing of the pending events previously stopped because of a
+ // call to SuspendProcessingOfPendingEvents()
+ void ResumeProcessingOfPendingEvents();
+
+ // called by ~wxEvtHandler to (eventually) remove the handler from the list of
+ // the handlers with pending events
+ void RemovePendingEventHandler(wxEvtHandler* toRemove);
+
+ // adds an event handler to the list of the handlers with pending events
+ void AppendPendingEventHandler(wxEvtHandler* toAppend);
- // make sure that idle events are sent again
- virtual void WakeUpIdle() { }
+ // moves the event handler from the list of the handlers with pending events
+ //to the list of the handlers with _delayed_ pending events
+ void DelayPendingEventHandler(wxEvtHandler* toDelay);
- // this is just a convenience: by providing its implementation here we
- // avoid #ifdefs in the code using it
- static bool IsMainLoopRunning() { return false; }
+ // deletes the current pending events
+ void DeletePendingEvents();
+
+
+ // delayed destruction
+ // -------------------
+
+ // If an object may have pending events for it, it shouldn't be deleted
+ // immediately as this would result in a crash when trying to handle these
+ // events: instead, it should be scheduled for destruction and really
+ // destroyed only after processing all pending events.
+ //
+ // Notice that this is only possible if we have a running event loop,
+ // otherwise the object is just deleted directly by ScheduleForDestruction()
+ // and IsScheduledForDestruction() always returns false.
+
+ // schedule the object for destruction in the near future
+ void ScheduleForDestruction(wxObject *object);
+
+ // return true if the object is scheduled for destruction
+ bool IsScheduledForDestruction(wxObject *object) const;
+
+
+ // wxEventLoop-related methods
+ // ---------------------------
+
+ // all these functions are forwarded to the corresponding methods of the
+ // currently active event loop -- and do nothing if there is none
+ virtual bool Pending();
+ virtual bool Dispatch();
+
+ virtual int MainLoop();
+ virtual void ExitMainLoop();
+
+ bool Yield(bool onlyIfNeeded = false);
+
+ virtual void WakeUpIdle();
+
+ // this method is called by the active event loop when there are no events
+ // to process
+ //
+ // by default it generates the idle events and if you override it in your
+ // derived class you should call the base class version to ensure that idle
+ // events are still sent out
+ virtual bool ProcessIdle();
+
+ // this virtual function is overridden in GUI wxApp to always return true
+ // as GUI applications always have an event loop -- but console ones may
+ // have it or not, so it simply returns true if already have an event loop
+ // running but false otherwise
+ virtual bool UsesEventLoop() const;
// debugging support
// -----------------
-#ifdef __WXDEBUG__
// this function is called when an assert failure occurs, the base class
// version does the normal processing (i.e. shows the usual assert failure
// dialog box)
int line,
const wxChar *cond,
const wxChar *msg);
-#endif // __WXDEBUG__
// check that the wxBuildOptions object (constructed in the application
// itself, usually the one from IMPLEMENT_APP() macro) matches the build
// options of the library and abort if it doesn't
static bool CheckBuildOptions(const char *optionsSignature,
const char *componentName);
-#if WXWIN_COMPATIBILITY_2_4
- wxDEPRECATED( static bool CheckBuildOptions(const wxBuildOptions& buildOptions) );
-#endif
// implementation only from now on
// -------------------------------
// command line arguments (public for backwards compatibility)
- int argc;
- wxChar **argv;
+ int argc;
+
+ // this object is implicitly convertible to either "char**" (traditional
+ // type of argv parameter of main()) or to "wchar_t **" (for compatibility
+ // with Unicode build in previous wx versions and because the command line
+ // can, in pr
+#if wxUSE_UNICODE
+ wxCmdLineArgsArray argv;
+#else
+ char **argv;
+#endif
protected:
+ // delete all objects in wxPendingDelete list
+ //
+ // called from ProcessPendingEvents()
+ void DeletePendingObjects();
+
// the function which creates the traits object when GetTraits() needs it
// for the first time
virtual wxAppTraits *CreateTraits();
-
// function used for dynamic wxApp creation
static wxAppInitializerFunction ms_appInitFn;
// the one and only global application object
static wxAppConsole *ms_appInstance;
+ // create main loop from AppTraits or return NULL if
+ // there is no main loop implementation
+ wxEventLoopBase *CreateMainLoop();
// application info (must be set from the user code)
- wxString m_vendorName, // vendor name (ACME Inc)
- m_appName, // app name
- m_className; // class name
+ wxString m_vendorName, // vendor name ("acme")
+ m_vendorDisplayName, // vendor display name (e.g. "ACME Inc")
+ m_appName, // app name ("myapp")
+ m_appDisplayName, // app display name ("My Application")
+ m_className; // class name
// the class defining the application behaviour, NULL initially and created
// by GetTraits() when first needed
wxAppTraits *m_traits;
+ // the main event loop of the application (may be NULL if the loop hasn't
+ // been started yet or has already terminated)
+ wxEventLoopBase *m_mainLoop;
+
+
+ // pending events management vars:
+
+ // the array of the handlers with pending events which needs to be processed
+ // inside ProcessPendingEvents()
+ wxEvtHandlerArray m_handlersWithPendingEvents;
+
+ // helper array used by ProcessPendingEvents() to store the event handlers
+ // which have pending events but of these events none can be processed right now
+ // (because of a call to wxEventLoop::YieldFor() which asked to selectively process
+ // pending events)
+ wxEvtHandlerArray m_handlersWithPendingDelayedEvents;
+
+#if wxUSE_THREADS
+ // this critical section protects both the lists above
+ wxCriticalSection m_handlersWithPendingEventsLocker;
+#endif
+
+ // flag modified by Suspend/ResumeProcessingOfPendingEvents()
+ bool m_bDoPendingEventProcessing;
+
+ friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler;
// the application object is a singleton anyhow, there is no sense in
// copying it
- DECLARE_NO_COPY_CLASS(wxAppConsole)
+ wxDECLARE_NO_COPY_CLASS(wxAppConsoleBase);
};
+#if defined(__UNIX__)
+ #include "wx/unix/app.h"
+#else
+ // this has to be a class and not a typedef as we forward declare it
+ class wxAppConsole : public wxAppConsoleBase { };
+#endif
+
// ----------------------------------------------------------------------------
// wxAppBase: the common part of wxApp implementations for all platforms
// ----------------------------------------------------------------------------
// the worker functions - usually not used directly by the user code
// -----------------------------------------------------------------
- // return true if we're running main loop, i.e. if the events can
- // (already) be dispatched
- static bool IsMainLoopRunning()
- {
- wxAppBase *app = wx_static_cast(wxAppBase *, GetInstance());
- return app && app->m_mainLoop != NULL;
- }
-
- // execute the main GUI loop, the function returns when the loop ends
- virtual int MainLoop();
-
- // exit the main loop thus terminating the application
- virtual void Exit();
-
- // exit the main GUI loop during the next iteration (i.e. it does not
- // stop the program immediately!)
- virtual void ExitMainLoop();
-
- // returns true if there are unprocessed events in the event queue
- virtual bool Pending();
-
- // process the first event in the event queue (blocks until an event
- // appears if there are none currently, use Pending() if this is not
- // wanted), returns false if the event loop should stop and true
- // otherwise
- virtual bool Dispatch();
-
- // process all currently pending events right now
- //
- // it is an error to call Yield() recursively unless the value of
- // onlyIfNeeded is true
- //
- // WARNING: this function is dangerous as it can lead to unexpected
- // reentrancies (i.e. when called from an event handler it
- // may result in calling the same event handler again), use
- // with _extreme_ care or, better, don't use at all!
- virtual bool Yield(bool onlyIfNeeded = false) = 0;
+ // safer alternatives to Yield(), using wxWindowDisabler
+ virtual bool SafeYield(wxWindow *win, bool onlyIfNeeded);
+ virtual bool SafeYieldFor(wxWindow *win, long eventsToProcess);
// this virtual function is called in the GUI mode when the application
// becomes idle and normally just sends wxIdleEvent to all interested
// Returns true if more idle time is requested.
virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event);
-
-#if wxUSE_EXCEPTIONS
- // Function called if an uncaught exception is caught inside the main
- // event loop: it may return true to continue running the event loop or
- // false to stop it (in the latter case it may rethrow the exception as
- // well)
- virtual bool OnExceptionInMainLoop();
-#endif // wxUSE_EXCEPTIONS
+ // override base class version: GUI apps always use an event loop
+ virtual bool UsesEventLoop() const { return true; }
// top level window functions
virtual bool SetDisplayMode(const wxVideoMode& WXUNUSED(info)) { return true; }
// set use of best visual flag (see below)
- void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; }
+ void SetUseBestVisual( bool flag, bool forceTrueColour = false )
+ { m_useBestVisual = flag; m_forceTrueColour = forceTrueColour; }
bool GetUseBestVisual() const { return m_useBestVisual; }
// set/get printing mode: see wxPRINT_XXX constants.
virtual void SetPrintMode(int WXUNUSED(mode)) { }
int GetPrintMode() const { return wxPRINT_POSTSCRIPT; }
+ // Return the layout direction for the current locale or wxLayout_Default
+ // if it's unknown
+ virtual wxLayoutDirection GetLayoutDirection() const;
+
+ // Change the theme used by the application, return true on success.
+ virtual bool SetNativeTheme(const wxString& WXUNUSED(theme)) { return false; }
+
// command line parsing (GUI-specific)
// ------------------------------------------------------------------------
wxDEPRECATED( bool Initialized() );
#endif // WXWIN_COMPATIBILITY_2_6
- // perform standard OnIdle behaviour, ensure that this is always called
- void OnIdle(wxIdleEvent& event);
-
-
protected:
- // delete all objects in wxPendingDelete list
- void DeletePendingObjects();
-
// override base class method to use GUI traits
virtual wxAppTraits *CreateTraits();
- // the main event loop of the application (may be NULL if the loop hasn't
- // been started yet or has already terminated)
- wxEventLoop *m_mainLoop;
-
// the main top level window (may be NULL)
wxWindow *m_topWindow;
// true if the app wants to use the best visual on systems where
// more than one are available (Sun, SGI, XFree86 4.0 ?)
bool m_useBestVisual;
+ // force TrueColour just in case "best" isn't TrueColour
+ bool m_forceTrueColour;
// does any of our windows have focus?
bool m_isActive;
-
- DECLARE_NO_COPY_CLASS(wxAppBase)
+ wxDECLARE_NO_COPY_CLASS(wxAppBase);
};
#if WXWIN_COMPATIBILITY_2_6
inline bool wxAppBase::Initialized() { return true; }
#endif // WXWIN_COMPATIBILITY_2_6
-#endif // wxUSE_GUI
-
// ----------------------------------------------------------------------------
// now include the declaration of the real class
// ----------------------------------------------------------------------------
-#if wxUSE_GUI
- #if defined(__WXPALMOS__)
- #include "wx/palmos/app.h"
- #elif defined(__WXMSW__)
- #include "wx/msw/app.h"
- #elif defined(__WXMOTIF__)
- #include "wx/motif/app.h"
- #elif defined(__WXMGL__)
- #include "wx/mgl/app.h"
- #elif defined(__WXDFB__)
- #include "wx/dfb/app.h"
- #elif defined(__WXGTK20__)
- #include "wx/gtk/app.h"
- #elif defined(__WXGTK__)
- #include "wx/gtk1/app.h"
- #elif defined(__WXX11__)
- #include "wx/x11/app.h"
- #elif defined(__WXMAC__)
- #include "wx/mac/app.h"
- #elif defined(__WXCOCOA__)
- #include "wx/cocoa/app.h"
- #elif defined(__WXPM__)
- #include "wx/os2/app.h"
- #endif
+#if defined(__WXPALMOS__)
+ #include "wx/palmos/app.h"
+#elif defined(__WXMSW__)
+ #include "wx/msw/app.h"
+#elif defined(__WXMOTIF__)
+ #include "wx/motif/app.h"
+#elif defined(__WXMGL__)
+ #include "wx/mgl/app.h"
+#elif defined(__WXDFB__)
+ #include "wx/dfb/app.h"
+#elif defined(__WXGTK20__)
+ #include "wx/gtk/app.h"
+#elif defined(__WXGTK__)
+ #include "wx/gtk1/app.h"
+#elif defined(__WXX11__)
+ #include "wx/x11/app.h"
+#elif defined(__WXMAC__)
+ #include "wx/osx/app.h"
+#elif defined(__WXCOCOA__)
+ #include "wx/cocoa/app.h"
+#elif defined(__WXPM__)
+ #include "wx/os2/app.h"
+#endif
+
#else // !GUI
- // allow using just wxApp (instead of wxAppConsole) in console programs
- typedef wxAppConsole wxApp;
+
+// wxApp is defined in core and we cannot define another one in wxBase,
+// so use the preprocessor to allow using wxApp in console programs too
+#define wxApp wxAppConsole
+
#endif // GUI/!GUI
// ----------------------------------------------------------------------------
//
// the cast is safe as in GUI build we only use wxApp, not wxAppConsole, and in
// console mode it does nothing at all
-#define wxTheApp wx_static_cast(wxApp*, wxApp::GetInstance())
+#define wxTheApp static_cast<wxApp*>(wxApp::GetInstance())
// ----------------------------------------------------------------------------
// global functions
// ------------------------------------------------------
// Force an exit from main loop
-extern void WXDLLIMPEXP_BASE wxExit();
+WXDLLIMPEXP_BASE void wxExit();
+
+// avoid redeclaring this function here if it had been already declared by
+// wx/utils.h, this results in warnings from g++ with -Wredundant-decls
+#ifndef wx_YIELD_DECLARED
+#define wx_YIELD_DECLARED
// Yield to other apps/messages
-extern bool WXDLLIMPEXP_BASE wxYield();
+WXDLLIMPEXP_CORE bool wxYield();
+
+#endif // wx_YIELD_DECLARED
// Yield to other apps/messages
-extern void WXDLLIMPEXP_BASE wxWakeUpIdle();
+WXDLLIMPEXP_BASE void wxWakeUpIdle();
// ----------------------------------------------------------------------------
// macros for dynamic creation of the application object
wxAppInitializer \
wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
DECLARE_APP(appname) \
- appname& wxGetApp() { return *wx_static_cast(appname*, wxApp::GetInstance()); }
+ appname& wxGetApp() { return *static_cast<appname*>(wxApp::GetInstance()); }
// Same as IMPLEMENT_APP() normally but doesn't include themes support in
// wxUniversal builds
projects / wxWidgets.git / blobdiff