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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.
-
- #include "stdafx.h"
- #include <vd2/system/vdtypes.h>
- #include <vd2/system/event.h>
-
- ///////////////////////////////////////////////////////////////////////////////
-
- VDDelegate::VDDelegate() {
- mpPrev = mpNext = this;
- }
-
- VDDelegate::~VDDelegate() {
- VDDelegateNode *next = mpNext;
- VDDelegateNode *prev = mpPrev;
- prev->mpNext = next;
- next->mpPrev = prev;
- }
-
- ///////////////////////////////////////////////////////////////////////////////
-
- VDEventBase::VDEventBase() {
- mAnchor.mpPrev = mAnchor.mpNext = &mAnchor;
- }
-
- VDEventBase::~VDEventBase() {
- while(mAnchor.mpPrev != &mAnchor)
- Remove(static_cast<VDDelegate&>(*mAnchor.mpPrev));
- }
-
- void VDEventBase::Add(VDDelegate& dbase) {
- VDDelegateNode *next = mAnchor.mpNext;
-
- VDASSERT(dbase.mpPrev == &dbase);
-
- mAnchor.mpNext = &dbase;
- dbase.mpPrev = &mAnchor;
- dbase.mpNext = next;
- next->mpPrev = &dbase;
- }
-
- void VDEventBase::Remove(VDDelegate& dbase) {
- VDASSERT(dbase.mpPrev != &dbase);
-
- VDDelegateNode *next = dbase.mpNext;
- VDDelegateNode *prev = dbase.mpPrev;
- prev->mpNext = next;
- next->mpPrev = prev;
- dbase.mpPrev = dbase.mpNext = &dbase;
- }
-
- void VDEventBase::Raise(void *src, const void *info) {
- for(VDDelegateNode *node = mAnchor.mpNext; node != &mAnchor; node = node->mpNext) {
- VDDelegate& dbase = static_cast<VDDelegate&>(*node);
-
- dbase.mpCallback(src, info, dbase);
- }
- }
-