95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
#pragma once
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#include<hgl/type/SortedSet.h>
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#include<hgl/io/event/InputEventSource.h>
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/*
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* 现阶段事件分发流程：
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*
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* 操作系统事件 -> Window -> RenderFramework -> WorkManager
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*
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*/
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namespace hgl::io
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{
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struct EventHeader
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{
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InputEventSource type; ///<输入源类型
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uint8 index; ///<输入源索引(比如同一设备有多个)
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uint16 id; ///<事件id
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};
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constexpr size_t EventHeaderBytes=sizeof(EventHeader);
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/**
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* 事件处理结果
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*/
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enum class EventProcResult
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{
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Continue,
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Break,
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};
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/**
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* 事件分发器
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*/
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class EventDispatcher
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{
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protected:
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InputEventSource source_type;
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EventDispatcher * parent_input_event;
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SortedSet<EventDispatcher *> child_dispatchers;
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protected:
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void SetParent(EventDispatcher *ie){parent_input_event=ie;}
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public:
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const InputEventSource GetInputEventSource()const{return source_type;}
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virtual EventProcResult OnEvent(const EventHeader &header,const uint64 data)
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{
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if(!RangeCheck(header.type))
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return(EventProcResult::Break);
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if(!child_dispatchers.IsEmpty())
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{
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for(EventDispatcher *ie:child_dispatchers)
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if(ie->OnEvent(header,data)==EventProcResult::Break)
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return EventProcResult::Break;
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}
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return(EventProcResult::Continue);
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}
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public:
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EventDispatcher()
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{
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source_type=InputEventSource::Root;
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parent_input_event=nullptr;
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}
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EventDispatcher(InputEventSource ies)
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{
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source_type=ies;
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parent_input_event=nullptr;
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}
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virtual ~EventDispatcher()
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{
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if(parent_input_event)
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parent_input_event->RemoveChildDispatcher(this);
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}
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virtual bool AddChildDispatcher(EventDispatcher *ie);
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virtual bool RemoveChildDispatcher(EventDispatcher *ie);
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virtual bool Update(){return true;}
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};//class EventDispatcher
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}//namespace hgl::io
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