// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "SCompoundWidget.h"
#include "SLeafWidget.h"
#include "Pattern/MidiPattern.h"
#include "UI/Widget/SUpdatableImage.h"

class SUpdatableImage;
class FPluginHost;

/**
 * 
 */
class ARONA_API SChannelRackMidiThumbnail : public SCompoundWidget
{
public:
	SLATE_BEGIN_ARGS(SChannelRackMidiThumbnail)
		{
		}
	SLATE_ARGUMENT(FMidiPattern*, Pattern)
	
	SLATE_END_ARGS()

	~SChannelRackMidiThumbnail();
	void SetPattern(FMidiPattern* InPattern);
	
	/** Constructs this widget with InArgs */
	void Construct(const FArguments& InArgs, FPluginHost* InPluginHost);

	virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
	virtual int32 OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
private:
	void OnChanged(FPluginHost* Host, FMidiMessageSequence* Changed);
	void OnPatternPlay(FPatternInstance* PatternInstance, AudioFrame PatternTick, uint32 Length);

	void UpdateMidiThumbnail(FImageData& ImageData);
	
	FPluginHost* PluginHost;
	FMidiPattern* CurrentPattern;
	
	TSharedPtr<SUpdatableImage> UpdatableImage;

	AudioFrame LastPatternPos;
};