ec3ed6a5eb
I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
97 lines
3.1 KiB
C++
97 lines
3.1 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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struct SkTagList;
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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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/** 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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/** 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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/** Add sinkID to the list of listeners, to receive events from calls to sendToListeners()
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and postToListeners(). If sinkID already exists in the listener list, no change is made.
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*/
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void addListenerID(SkEventSinkID sinkID);
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/** Copy listeners from one event sink to another, typically from parent to child.
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@param from the event sink to copy the listeners from
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*/
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void copyListeners(const SkEventSink& from);
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/** Remove sinkID from the list of listeners. If sinkID does not appear in the list,
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no change is made.
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*/
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void removeListenerID(SkEventSinkID);
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/** Returns true if there are 1 or more listeners attached to this eventsink
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*/
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bool hasListeners() const;
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/** Posts a copy of evt to each of the eventsinks in the lisener list.
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*/
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void postToListeners(const SkEvent& evt, SkMSec delay = 0);
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enum EventResult {
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kHandled_EventResult, //!< the eventsink returned true from its doEvent method
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kNotHandled_EventResult, //!< the eventsink returned false from its doEvent method
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kSinkNotFound_EventResult //!< no matching eventsink was found for the event's getSink().
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};
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/** DoEvent handles searching for an eventsink object that matches the targetID.
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If one is found, it calls the sink's doEvent method, returning
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either kHandled_EventResult or kNotHandled_EventResult. If no matching
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eventsink is found, kSinkNotFound_EventResult is returned.
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*/
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static EventResult DoEvent(const SkEvent&, SkEventSinkID targetID);
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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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SkTagList* findTagList(U8CPU tag) const;
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void addTagList(SkTagList*);
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void removeTagList(U8CPU tag);
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private:
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SkEventSinkID fID;
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SkTagList* fTagHead;
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// for our private link-list
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SkEventSink* fNextSink;
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};
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#endif
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