113 lines
3.0 KiB
C++
113 lines
3.0 KiB
C++
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////////////////////////////////////////////////////////////
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//
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// InputEvents.cpp
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//
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////////////////////////////////////////////////////////////
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#include "InputEvents.h"
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#include "Common.h"
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bool FlxEventRequest::operator==(const FlxEventRequest &Other) const
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{
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return (Widget == Other.Widget) &&
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(TakeControl == Other.TakeControl) &&
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(ShowPointer == Other.ShowPointer) &&
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(Hotkeys == Other.Hotkeys);
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}
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bool FlxEventRequests::SanityCheck(const FlxEventRequest &Request)
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{
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if (Request.Widget == nullptr)
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{
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UE_LOG(LogLuprexIntegration, Error, TEXT("RequestEvents called with null widget."));
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return false;
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}
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if (Request.ShowPointer && !Request.TakeControl)
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{
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UE_LOG(LogLuprexIntegration, Error, TEXT("RequestEvents: ShowPointer requires TakeControl."));
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return false;
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}
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if (Request.TakeControl && !Request.Hotkeys.IsEmpty())
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{
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UE_LOG(LogLuprexIntegration, Error, TEXT("RequestEvents: Widget asked for all events, and also, specific events"));
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return false;
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}
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return true;
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}
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void FlxEventRequests::SplitHighLow(View &High, View &Low)
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{
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int32 NumHigh = 0;
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while ((NumHigh < Requests.Num()) && (Requests[NumHigh].TakeControl)) NumHigh++;
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int32 NumLow = Requests.Num() - NumHigh;
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High = View(Requests.GetData(), NumHigh);
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Low = View(Requests.GetData() + NumHigh, NumLow);
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}
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void FlxEventRequests::Request(const FlxEventRequest &NewRequest)
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{
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// Divide the array into a high-priority slice and a low-priority slice.
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View High, Low;
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SplitHighLow(High, Low);
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// This is a simple test to see if anything is going to change.
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// If not, we return early and avoid setting the dirty bit.
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if (NewRequest.TakeControl)
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{
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if ((High.Num() > 0) && (High[0] == NewRequest)) return;
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}
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else
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{
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if ((Low.Num() > 0) && (Low[0] == NewRequest)) return;
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}
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// We're going to build a new version of the requests array.
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TArray<FlxEventRequest> Updated;
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// Add all high priority requests to the updated array, new request first.
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if (NewRequest.TakeControl) Updated.Add(NewRequest);
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for (const FlxEventRequest &Req : High)
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if (Req.Widget != NewRequest.Widget) Updated.Add(Req);
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// Add all low priority requests to the updated array, new request first.
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if (!NewRequest.TakeControl) Updated.Add(NewRequest);
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for (const FlxEventRequest &Req : Low)
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if (Req.Widget != NewRequest.Widget) Updated.Add(Req);
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Swap(Requests, Updated);
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Dirty = true;
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}
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void FlxEventRequests::Remove(UUserWidget *Widget)
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{
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int32 N = Requests.Num();
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Requests.RemoveAll([Widget](const FlxEventRequest &Entry)
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{
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return Entry.Widget == Widget;
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});
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if (Requests.Num() < N) Dirty = true;
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}
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void FlxEventRequests::GarbageCollect()
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{
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int32 N = Requests.Num();
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Requests.RemoveAll([](const FlxEventRequest &Entry)
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{
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UUserWidget *W = Entry.Widget;
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return W == nullptr || !IsValid(W) || W->GetParent() == nullptr;
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});
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if (Requests.Num() < N) Dirty = true;
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}
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FlxEventRequests::InputMode FlxEventRequests::GetRequestedMode() const
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{
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if ((Requests.Num() > 0) && (Requests[0].TakeControl))
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{
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return InputMode::UIOnly;
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}
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else
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{
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return InputMode::GameOnly;
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}
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}
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