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implement event loop for console applications (heavily modified patch 1715735)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46029 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2007-05-14 23:43:39 +00:00
parent 9e9f08b5ed
commit b46b1d59d6
72 changed files with 3181 additions and 1128 deletions
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108
include/wx/app.h
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@@ -25,6 +25,7 @@
class WXDLLIMPEXP_BASE wxAppConsole;
class WXDLLIMPEXP_BASE wxAppTraits;
class WXDLLIMPEXP_BASE wxCmdLineParser;
class WXDLLIMPEXP_BASE wxEventLoop;
class WXDLLIMPEXP_BASE wxLog;
class WXDLLIMPEXP_BASE wxMessageOutput;
@@ -86,7 +87,7 @@ public:
// 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 only called if OnInit() returned true so it's a good place to do
// any cleanup matching the initializations done there.
@@ -170,7 +171,7 @@ public:
// 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 fa<66>ade
// allows us to abstract the differences behind the common fa<66>de
wxAppTraits *GetTraits();
@@ -203,22 +204,62 @@ public:
virtual void OnUnhandledException() { }
#endif // wxUSE_EXCEPTIONS
// event processing functions
// --------------------------
// return true if we're running event loop, i.e. if the events can
// (already) be dispatched
static bool IsMainLoopRunning()
{
const wxAppConsole * const app = GetInstance();
return app && app->m_mainLoop != NULL;
}
// process all events in the wxPendingEvents 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();
// check if there are pending events on global pending event list
bool HasPendingEvents() const;
// doesn't do anything in this class, just a hook for GUI wxApp
virtual bool Yield(bool WXUNUSED(onlyIfNeeded) = false) { return true; }
// make sure that idle events are sent again
virtual void WakeUpIdle() { }
virtual void WakeUpIdle();
// this is just a convenience: by providing its implementation here we
// avoid #ifdefs in the code using it
static bool IsMainLoopRunning() { return false; }
// execute the main GUI loop, the function returns when the loop ends
virtual int MainLoop();
// 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();
// this virtual function is called when the application
// becomes idle and normally just sends wxIdleEvent to all interested
// parties
//
// it should return true if more idle events are needed, false if not
virtual bool ProcessIdle();
#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
// debugging support
// -----------------
@@ -284,6 +325,9 @@ protected:
// 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
wxEventLoop *CreateMainLoop();
// application info (must be set from the user code)
wxString m_vendorName, // vendor name (ACME Inc)
@@ -294,6 +338,9 @@ protected:
// 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)
wxEventLoop *m_mainLoop;
// the application object is a singleton anyhow, there is no sense in
// copying it
@@ -347,32 +394,7 @@ public:
// 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
//
@@ -397,15 +419,6 @@ public:
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
// top level window functions
// --------------------------
@@ -494,10 +507,6 @@ protected:
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;
@@ -560,8 +569,15 @@ protected:
#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 we create a different class and typedef it to wxApp instead
#if defined(__UNIX__)
#include "wx/unix/app.h"
class wxApp : public wxAppConsoleUnix { };
#else
// allow using just wxApp (instead of wxAppConsole) in console programs
class wxApp : public wxAppConsole { };
#endif
#endif // GUI/!GUI
// ----------------------------------------------------------------------------