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104 lines
3 KiB
C++
104 lines
3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/evtloopsrc.h
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// Purpose: declaration of wxEventLoopSource class
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// Author: Vadim Zeitlin
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// Created: 2009-10-21
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// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_EVTLOOPSRC_H_
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#define _WX_EVTLOOPSRC_H_
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// Include the header to get wxUSE_EVENTLOOP_SOURCE definition from it.
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#include "wx/evtloop.h"
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// ----------------------------------------------------------------------------
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// wxEventLoopSource: a source of events which may be added to wxEventLoop
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// ----------------------------------------------------------------------------
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// TODO: refactor wxSocket under Unix to reuse wxEventLoopSource instead of
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// duplicating much of its logic
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//
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// TODO: freeze the API and document it
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#if wxUSE_EVENTLOOP_SOURCE
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#define wxTRACE_EVT_SOURCE "EventSource"
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// handler used to process events on event loop sources
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class wxEventLoopSourceHandler
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{
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public:
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// called when descriptor is available for non-blocking read
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virtual void OnReadWaiting() = 0;
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// called when descriptor is available for non-blocking write
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virtual void OnWriteWaiting() = 0;
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// called when there is exception on descriptor
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virtual void OnExceptionWaiting() = 0;
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// virtual dtor for the base class
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virtual ~wxEventLoopSourceHandler() { }
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};
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// flags describing which kind of IO events we're interested in
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enum
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{
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wxEVENT_SOURCE_INPUT = 0x01,
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wxEVENT_SOURCE_OUTPUT = 0x02,
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wxEVENT_SOURCE_EXCEPTION = 0x04,
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wxEVENT_SOURCE_ALL = wxEVENT_SOURCE_INPUT |
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wxEVENT_SOURCE_OUTPUT |
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wxEVENT_SOURCE_EXCEPTION
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};
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// wxEventLoopSource itself is an ABC and can't be created directly, currently
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// the only way to create it is by using wxEventLoop::AddSourceForFD().
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class wxEventLoopSource
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{
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public:
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// dtor is pure virtual because it must be overridden to remove the source
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// from the event loop monitoring it
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virtual ~wxEventLoopSource() = 0;
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void SetHandler(wxEventLoopSourceHandler* handler) { m_handler = handler; }
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wxEventLoopSourceHandler* GetHandler() const { return m_handler; }
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void SetFlags(int flags) { m_flags = flags; }
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int GetFlags() const { return m_flags; }
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protected:
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// ctor is only used by the derived classes
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wxEventLoopSource(wxEventLoopSourceHandler *handler, int flags)
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: m_handler(handler),
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m_flags(flags)
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{
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}
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wxEventLoopSourceHandler* m_handler;
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int m_flags;
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wxDECLARE_NO_COPY_CLASS(wxEventLoopSource);
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};
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inline wxEventLoopSource::~wxEventLoopSource() { }
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#if defined(__UNIX__)
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#include "wx/unix/evtloopsrc.h"
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#endif // __UNIX__
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#if defined(__WXGTK20__)
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#include "wx/gtk/evtloopsrc.h"
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#endif
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#if defined(__DARWIN__)
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#include "wx/osx/evtloopsrc.h"
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#elif defined(__WXQT__)
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#include "wx/unix/evtloopsrc.h"
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#endif
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#endif // wxUSE_EVENTLOOP_SOURCE
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#endif // _WX_EVTLOOPSRC_H_
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