111 lines
2.6 KiB
C++
111 lines
2.6 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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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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class EventDispatch
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{
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protected:
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InputEventSource source_type;
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EventDispatch * parent_input_event;
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SortedSet<EventDispatch *> event_dispatch_subscribers;
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protected:
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void SetParent(EventDispatch *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(!event_dispatch_subscribers.IsEmpty())
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{
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for(EventDispatch *ie:event_dispatch_subscribers)
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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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EventDispatch()
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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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EventDispatch(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 ~EventDispatch()
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{
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if(parent_input_event)
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parent_input_event->UnregistryEventDispatch(this);
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}
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virtual bool RegistryEventDispatch(EventDispatch *ie)
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{
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if(!ie)
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return(false);
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const InputEventSource ies=ie->GetInputEventSource();
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if(!RangeCheck(ies))
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return(false);
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ie->SetParent(this);
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return(event_dispatch_subscribers.Add(ie)!=-1);
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}
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bool UnregistryEventDispatch(EventDispatch *ie)
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{
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if(!ie)return(false);
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const InputEventSource ies=ie->GetInputEventSource();
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if(!RangeCheck(ies))
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return(false);
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ie->SetParent(nullptr);
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return event_dispatch_subscribers.Delete(ie);
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}
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virtual bool Update(){return true;}
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};//class EventDispatch
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}//namespace hgl::io
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