//
//  KMCustomButton.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/12/18.
//

import Cocoa

@objcMembers class KMCustomButton: NSButton {
    
    @objc var mouseMoveCallback: ((_ mouseEntered: Bool)->Void)?

    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        if self.isHighlighted {
            let radius = self.layer?.cornerRadius ?? 0
            let context = NSGraphicsContext.current
            context?.saveGraphicsState()
            NSBezierPath(roundedRect: dirtyRect, xRadius: radius, yRadius: radius).setClip()
            NSColor(deviceRed: 0, green: 0, blue: 0, alpha: 0.15).set()
            dirtyRect.fill(using: .sourceOver)
            context?.restoreGraphicsState()
        }
    }
    
    override func viewDidMoveToWindow() {
        super.viewDidMoveToWindow()
        
        if self.window != nil {
            self.addTrackingRect(self.bounds, owner: self, userData: nil, assumeInside: false)
        }
    }
    
    override func setFrameSize(_ newSize: NSSize) {
        super.setFrameSize(newSize)
        
        self.addTrackingRect(NSMakeRect(0, 0, newSize.width, newSize.height), owner: self, userData: nil, assumeInside: false)
    }
    
    override func mouseEntered(with event: NSEvent) {
        guard let callback = self.mouseMoveCallback else {
            return
        }
        callback(true)
    }
    
    override func mouseExited(with event: NSEvent) {
        guard let callback = self.mouseMoveCallback else {
            return
        }
        callback(false)
    }
}