#include "wx/meta/convertible.h"
#endif
+// Currently VC6 and VC7 are known to not be able to compile CallAfter() code,
+// so disable it for them.
+#if !defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(8)
+ #include "wx/meta/removeref.h"
+
+ #define wxHAS_CALL_AFTER
+#endif
+
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
// Need events declared to do this
class WXDLLIMPEXP_FWD_BASE wxIdleEvent;
class WXDLLIMPEXP_FWD_BASE wxThreadEvent;
+class WXDLLIMPEXP_FWD_BASE wxAsyncMethodCallEvent;
class WXDLLIMPEXP_FWD_CORE wxCommandEvent;
class WXDLLIMPEXP_FWD_CORE wxMouseEvent;
class WXDLLIMPEXP_FWD_CORE wxFocusEvent;
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
- // Thread events
+ // Thread and asynchronous method call events
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_BASE, wxEVT_THREAD, wxThreadEvent);
+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_BASE, wxEVT_ASYNC_METHOD_CALL, wxAsyncMethodCallEvent);
// Mouse event types
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_LEFT_DOWN, wxMouseEvent);
};
+// Asynchronous method call events: these event are processed by wxEvtHandler
+// itself and result in a call to its Execute() method which simply calls the
+// specified method. The difference with a simple method call is that this is
+// done asynchronously, i.e. at some later time, instead of immediately when
+// the event object is constructed.
+
+#ifdef wxHAS_CALL_AFTER
+
+// This is a base class used to process all method calls.
+class wxAsyncMethodCallEvent : public wxEvent
+{
+public:
+ wxAsyncMethodCallEvent(wxObject* object)
+ : wxEvent(wxID_ANY, wxEVT_ASYNC_METHOD_CALL)
+ {
+ SetEventObject(object);
+ }
+
+ wxAsyncMethodCallEvent(const wxAsyncMethodCallEvent& other)
+ : wxEvent(other)
+ {
+ }
+
+ virtual void Execute() = 0;
+};
+
+// This is a version for calling methods without parameters.
+template <typename T>
+class wxAsyncMethodCallEvent0 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)();
+
+ wxAsyncMethodCallEvent0(ObjectType* object,
+ MethodType method)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method)
+ {
+ }
+
+ wxAsyncMethodCallEvent0(const wxAsyncMethodCallEvent0& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent0(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)();
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+};
+
+// This is a version for calling methods with a single parameter.
+template <typename T, typename T1>
+class wxAsyncMethodCallEvent1 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)(T1 x1);
+ typedef typename wxRemoveRef<T1>::type ParamType1;
+
+ wxAsyncMethodCallEvent1(ObjectType* object,
+ MethodType method,
+ const ParamType1& x1)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method),
+ m_param1(x1)
+ {
+ }
+
+ wxAsyncMethodCallEvent1(const wxAsyncMethodCallEvent1& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method),
+ m_param1(other.m_param1)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent1(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)(m_param1);
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+ const ParamType1 m_param1;
+};
+
+// This is a version for calling methods with two parameters.
+template <typename T, typename T1, typename T2>
+class wxAsyncMethodCallEvent2 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)(T1 x1, T2 x2);
+ typedef typename wxRemoveRef<T1>::type ParamType1;
+ typedef typename wxRemoveRef<T2>::type ParamType2;
+
+ wxAsyncMethodCallEvent2(ObjectType* object,
+ MethodType method,
+ const ParamType1& x1,
+ const ParamType2& x2)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method),
+ m_param1(x1),
+ m_param2(x2)
+ {
+ }
+
+ wxAsyncMethodCallEvent2(const wxAsyncMethodCallEvent2& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method),
+ m_param1(other.m_param1),
+ m_param2(other.m_param2)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent2(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)(m_param1, m_param2);
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+ const ParamType1 m_param1;
+ const ParamType2 m_param2;
+};
+
+#endif // wxHAS_CALL_AFTER
+
+
#if wxUSE_GUI
// Find the position of the event
void GetPosition(wxCoord *xpos, wxCoord *ypos) const
{
- if (xpos) *xpos = m_x;
- if (ypos) *ypos = m_y;
+ if (xpos)
+ *xpos = GetX();
+ if (ypos)
+ *ypos = GetY();
}
+ // This version if provided only for backwards compatiblity, don't use.
void GetPosition(long *xpos, long *ypos) const
{
- if (xpos) *xpos = (long)m_x;
- if (ypos) *ypos = (long)m_y;
+ if (xpos)
+ *xpos = GetX();
+ if (ypos)
+ *ypos = GetY();
}
wxPoint GetPosition() const
- { return wxPoint(m_x, m_y); }
+ { return wxPoint(GetX(), GetY()); }
// Get X position
wxCoord GetX() const;
}
public:
+ // Do not use these fields directly, they are initialized on demand, so
+ // call GetX() and GetY() or GetPosition() instead.
wxCoord m_x, m_y;
long m_keyCode;
// NOTE: uses AddPendingEvent(); call only from secondary threads
#endif
+#ifdef wxHAS_CALL_AFTER
+ // Asynchronous method calls: these methods schedule the given method
+ // pointer for a later call (during the next idle event loop iteration).
+ //
+ // Notice that the method is called on this object itself, so the object
+ // CallAfter() is called on must have the correct dynamic type.
+ //
+ // These method can be used from another thread.
+
+ template <typename T>
+ void CallAfter(void (T::*method)())
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent0<T>(static_cast<T*>(this), method)
+ );
+ }
+
+ // Notice that we use P1 and not T1 for the parameter to allow passing
+ // parameters that are convertible to the type taken by the method
+ // instead of being exactly the same, to be closer to the usual method call
+ // semantics.
+ template <typename T, typename T1, typename P1>
+ void CallAfter(void (T::*method)(T1 x1), P1 x1)
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent1<T, T1>(
+ static_cast<T*>(this), method, x1)
+ );
+ }
+
+ template <typename T, typename T1, typename T2, typename P1, typename P2>
+ void CallAfter(void (T::*method)(T1 x1, T2 x2), P1 x1, P2 x2)
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent2<T, T1, T2>(
+ static_cast<T*>(this), method, x1, x2)
+ );
+ }
+#endif // wxHAS_CALL_AFTER
+
// Connecting and disconnecting
// ----------------------------
projects / wxWidgets.git / blobdiff