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


#include "SChildWindowTitleBar.h"

#include "UI/Style/AronaStyle.h"
#include "SButton.h"
#include "SImage.h"
#include "SlateApplication.h"
#include "SlateOptMacros.h"
#include "STextBlock.h"

#include "Widgets/SBoxPanel.h"

BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION

void SChildWindowTitleBar::Construct(const FArguments& InArgs)
{
	OnClose = InArgs._OnClose;
	OnWindowMoveDelta = InArgs._OnWindowMoveDelta;
	OnMaximize = InArgs._OnMaximize;
	
	ChildSlot
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.VAlign(VAlign_Center)
		.Padding(5, 0, 0, 0)
		[
			SNew(STextBlock)
			.Text(FText::FromString(InArgs._Title))
		]
		+SHorizontalBox::Slot()
		.HAlign(HAlign_Right)
		.VAlign(VAlign_Center)
		.AutoWidth()
		[
			SNew(SButton)
			.DesiredSizeScale(FVector2D(16))
			.ButtonStyle(FAronaStyle::GetButtonStyle(CloseButtonStyleName))
			.OnClicked_Raw(this, &SChildWindowTitleBar::OnCloseClicked)
		]
	];
}

FReply SChildWindowTitleBar::OnMouseButtonDoubleClick(const FGeometry& InMyGeometry, const FPointerEvent& InMouseEvent)
{
	if (InMouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
	{
		ToggleMaximize();
		return FReply::Handled();
	}
	return FReply::Unhandled();
}

FReply SChildWindowTitleBar::OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent)
{
	if (bIsMaximized)
		return FReply::Unhandled();
	if (MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
	{
		OnMouseLeftButtonDown = true;
		return FReply::Unhandled().CaptureMouse(AsShared());
	}
	return FReply::Unhandled();
}

FReply SChildWindowTitleBar::OnMouseButtonUp(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent)
{
	if (bIsMaximized)
		return FReply::Unhandled().ReleaseMouseCapture();
	if (MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton)
	{
		OnMouseLeftButtonDown = false;
		return FReply::Unhandled().ReleaseMouseCapture();
	}
	return FReply::Unhandled().ReleaseMouseCapture();
}

FReply SChildWindowTitleBar::OnMouseMove(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent)
{
	if (bIsMaximized)
		return FReply::Unhandled();
	if (OnMouseLeftButtonDown)
	{
		OnWindowMoveDelta.ExecuteIfBound(MouseEvent.GetCursorDelta() / MyGeometry.Scale);
		return FReply::Handled();
	}
	return FReply::Unhandled();
}

void SChildWindowTitleBar::ToggleMaximize()
{
	bIsMaximized = !bIsMaximized;
	OnMaximize.ExecuteIfBound(bIsMaximized);
}

FReply SChildWindowTitleBar::OnCloseClicked()
{
	OnClose.ExecuteIfBound();
	return FReply::Handled();
}

END_SLATE_FUNCTION_BUILD_OPTIMIZATION