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- // VirtualDub - Video processing and capture application
- // System library component
- // Copyright (C) 1998-2006 Avery Lee, All Rights Reserved.
- //
- // Beginning with 1.6.0, the VirtualDub system library is licensed
- // differently than the remainder of VirtualDub. This particular file is
- // thus licensed as follows (the "zlib" license):
- //
- // This software is provided 'as-is', without any express or implied
- // warranty. In no event will the authors be held liable for any
- // damages arising from the use of this software.
- //
- // Permission is granted to anyone to use this software for any purpose,
- // including commercial applications, and to alter it and redistribute it
- // freely, subject to the following restrictions:
- //
- // 1. The origin of this software must not be misrepresented; you must
- // not claim that you wrote the original software. If you use this
- // software in a product, an acknowledgment in the product
- // documentation would be appreciated but is not required.
- // 2. Altered source versions must be plainly marked as such, and must
- // not be misrepresented as being the original software.
- // 3. This notice may not be removed or altered from any source
- // distribution.
-
- #ifndef f_VD2_SYSTEM_EVENT_H
- #define f_VD2_SYSTEM_EVENT_H
-
- struct VDDelegateNode {
- VDDelegateNode *mpNext, *mpPrev;
- };
-
- class VDDelegate;
-
- class VDEventBase {
- protected:
- VDEventBase();
- ~VDEventBase();
-
- void Add(VDDelegate&);
- void Remove(VDDelegate&);
- void Raise(void *src, const void *info);
-
- VDDelegateNode mAnchor;
- };
-
- template<class Source, class ArgType>
- class VDDelegateBinding {
- public:
- VDDelegate *mpBoundDelegate;
- };
-
- class VDDelegate : public VDDelegateNode {
- friend class VDEventBase;
- public:
- VDDelegate();
- ~VDDelegate();
-
- template<class T, class Source, class ArgType>
- VDDelegateBinding<Source, ArgType> operator()(T *obj, void (T::*fn)(Source *, const ArgType&)) {
- mpCallback = Adapter<T, Source, ArgType, void (T::*)(Source *, const ArgType&)>;
- mpObj = obj;
- mpFn = reinterpret_cast<void(Holder::*)()>(fn);
- VDDelegateBinding<Source, ArgType> binding = {this};
- return binding;
- }
-
- protected:
- template<class T, class Source, class ArgType, typename T_Fn>
- static void Adapter(void *src, const void *info, VDDelegate& del) {
- return (((T *)del.mpObj)->*reinterpret_cast<T_Fn>(del.mpFn))(static_cast<Source *>(src), *static_cast<const ArgType *>(info));
- }
-
- void (*mpCallback)(void *src, const void *info, VDDelegate&);
- void *mpObj;
-
- #ifdef _MSC_VER
- class __multiple_inheritance Holder;
- #else
- class Holder;
- #endif
-
- void (Holder::*mpFn)();
- };
-
- template<class Source, class ArgType>
- class VDEvent : public VDEventBase {
- public:
- void operator+=(const VDDelegateBinding<Source, ArgType>& binding) {
- Add(*binding.mpBoundDelegate);
- }
-
- void operator-=(const VDDelegateBinding<Source, ArgType>& binding) {
- Remove(*binding.mpBoundDelegate);
- }
-
- void Raise(Source *src, const ArgType& args) {
- VDEventBase::Raise(src, &args);
- }
- };
-
- #endif
-