75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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* synergy-plus -- mouse and keyboard sharing utility
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* Copyright (C) 2009 The Synergy+ Project
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* Copyright (C) 2004 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CSTREAMFILTER_H
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#define CSTREAMFILTER_H
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#include "IStream.h"
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//! A stream filter
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/*!
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This class wraps a stream. Subclasses provide indirect access
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to the wrapped stream, typically performing some filtering.
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*/
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class CStreamFilter : public IStream {
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public:
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/*!
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Create a wrapper around \c stream. Iff \c adoptStream is true then
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this object takes ownership of the stream and will delete it in the
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d'tor.
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*/
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CStreamFilter(IStream* stream, bool adoptStream = true);
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~CStreamFilter();
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// IStream overrides
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// These all just forward to the underlying stream except getEventTarget.
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// Override as necessary. getEventTarget returns a pointer to this.
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virtual void close();
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virtual UInt32 read(void* buffer, UInt32 n);
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virtual void write(const void* buffer, UInt32 n);
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virtual void flush();
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virtual void shutdownInput();
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virtual void shutdownOutput();
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virtual void* getEventTarget() const;
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virtual bool isReady() const;
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virtual UInt32 getSize() const;
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protected:
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//! Get the stream
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/*!
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Returns the stream passed to the c'tor.
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*/
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IStream* getStream() const;
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//! Handle events from source stream
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/*!
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Does the event filtering. The default simply dispatches an event
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identical except using this object as the event target.
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*/
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virtual void filterEvent(const CEvent&);
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private:
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void handleUpstreamEvent(const CEvent&, void*);
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private:
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IStream* m_stream;
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bool m_adopted;
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};
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#endif
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