4f99e58252
All of this is dead when not using the old SkWindow framework. TBR=reed@google.com Bug: skia: Change-Id: I0f6ab18987a98469bfd367d5bc10967300dfd3ca Reviewed-on: https://skia-review.googlesource.com/75384 Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: Jim Van Verth <jvanverth@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
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/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkEventSink_DEFINED
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#define SkEventSink_DEFINED
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#include "SkRefCnt.h"
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#include "SkEvent.h"
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/** \class SkEventSink
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SkEventSink is the base class for all objects that receive SkEvents.
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*/
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class SkEventSink : public SkRefCnt {
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public:
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SkEventSink();
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virtual ~SkEventSink();
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/**
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* Returns this eventsink's unique ID. Use this to post SkEvents to
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* this eventsink.
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*/
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SkEventSinkID getSinkID() const { return fID; }
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/**
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* Call this to pass an event to this object for processing. Returns true if the
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* event was handled.
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*/
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bool doEvent(const SkEvent&);
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/** Returns true if the sink (or one of its subclasses) understands the event as a query.
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If so, the sink may modify the event to communicate its "answer".
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*/
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bool doQuery(SkEvent* query);
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/**
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* Returns the matching eventsink, or null if not found
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*/
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static SkEventSink* FindSink(SkEventSinkID);
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protected:
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/** Override this to handle events in your subclass. Be sure to call the inherited version
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for events that you don't handle.
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*/
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virtual bool onEvent(const SkEvent&);
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virtual bool onQuery(SkEvent*);
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private:
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SkEventSinkID fID;
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// for our private link-list
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SkEventSink* fNextSink;
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typedef SkRefCnt INHERITED;
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};
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#endif
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