MultitouchLogic.h

Go to the documentation of this file.

// Copyright 2024 Lost in Game Studio. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "ComponentLogic.h"
#include "MultitouchLogic.generated.h"
 
class UTouchInterfaceListener;
//class UTwoFingerGestureBase;
//struct FGestureData;
 
USTRUCT(BlueprintType)
struct FFinger
{
    GENERATED_BODY()
 
    UPROPERTY(Category="Finger", VisibleAnywhere)
    bool bIsActive;
    
    UPROPERTY(Category="Finger", VisibleAnywhere)
    FVector2D BeginLocation;
 
    UPROPERTY(Category="Finger", VisibleAnywhere)
    FVector2D Location;
 
    UPROPERTY(Category="Finger", VisibleAnywhere)
    FVector2D Offset;
 
    UPROPERTY(Category="Finger", VisibleAnywhere)
    float ElapsedTime;
 
    FFinger()
    : bIsActive(false)
    , BeginLocation(ForceInitToZero)
    , Location(ForceInitToZero)
    , Offset(ForceInitToZero)
    , ElapsedTime(0.0f)
    {
        
    }
 
    void Reset()
    {
        bIsActive = false;
        BeginLocation = FVector2D::ZeroVector;
        Location = FVector2D::ZeroVector;
        Offset = FVector2D::ZeroVector;
        ElapsedTime = 0.0f;
    }
};

UCLASS(Abstract)
class TOUCHINTERFACE_API UMultitouchLogic : public UComponentLogic
{
    GENERATED_BODY()
 
public:
    UMultitouchLogic();
 
protected:
    virtual void Initialize_Implementation() override;
    virtual void OnPress_Implementation(const FGeometry& ComponentGeometry, const FPointerEvent& PointerEvent) override;
    virtual void OnMove_Implementation(const FGeometry& ComponentGeometry, const FPointerEvent& PointerEvent) override;
    virtual void OnRelease_Implementation(const FGeometry& ComponentGeometry, const FPointerEvent& PointerEvent) override;
    virtual void OnTick_Implementation(const FGeometry& ComponentGeometry, const FPointerEvent& PointerEvent, const double InCurrentTime, const float InDeltaTime) override;
 
    //TODO: Implement multitouch without gesture recognizer?
    
    // //Called when two finger hit this component
    // UFUNCTION(Category="Multitouch", BlueprintNativeEvent)
    // void OnMultiTouchBegan(const TArray<FGestureData>& GestureData);
    //
    // //Called when two fingers moves
    // UFUNCTION(Category="Multitouch", BlueprintNativeEvent)
    // void OnMultiTouchUpdate(const TArray<FGestureData>& GestureData);
    //
    // //Called when 
    // UFUNCTION(Category="Multitouch", BlueprintNativeEvent)
    // void OnMultiTouchEnd(const TArray<FGestureData>& GestureData);
 
    UFUNCTION(Category="Multitouch", BlueprintCallable)
    void SetSupportGesture(const bool bEnable) { bSupportGesture = bEnable; }
 
    //TODO: Implement Drawing support. Add, Remove, Get, Show, Hide drawer instance
 
    //UPROPERTY(Category="Free Touch", EditAnywhere, BlueprintReadWrite, meta=(AllowPrivateAccess="true"))
    //uint8 bSupportVirtualShape:1;
 
public:
    // UFUNCTION(Category="Multitouch", BlueprintCallable, BlueprintPure)
    // TArray<UTwoFingerGestureBase*> GetGestureObjects();
 
private:
    // If enabled, send multitouch event to gesture recognizer
    UPROPERTY(Category="Multitouch", EditAnywhere, BlueprintReadWrite, meta=(AllowPrivateAccess="true"))
    uint8 bSupportGesture:1;
 
    //Add any two finger gestures you wish to recognize.
    //UPROPERTY(Category="Multitouch", EditAnywhere, BlueprintReadOnly, Instanced, meta=(AllowPrivateAccess="true"))
    //TArray<TObjectPtr<UTwoFingerGestureBase>> TwoFingerGestures;
    
    
    TArray<int32> CapturePointerIndex;
 
    TArray<FFinger> FingerData;
 
    //TArray<FGestureData> SavedGestureData;
 
    UPROPERTY()
    TArray<UTouchInterfaceListener*> Listeners;
 
    double CurrentTime;
};