objective-c - 有什么方法可以将 mouseOver 事件添加到 cocoa 中的 tableView 中吗？

Question

我想让我的 tableView 表现如下:
当鼠标滑过某一行时，该行会突出显示，就像按钮的 mouseOver 事件

Answer 1

我花了一些时间基于this进行工作。提示。

这对我有用，如果我错了，请纠正我。

在 macOS 10.12.2 和 Xcode 8.2.1 上使用 Swift 3.0.2 进行测试

//
// Created by longkai on 30/12/2016.
// Copyright (c) 2016 xiaolongtongxue.com. All rights reserved.
//

import Cocoa

class InboxTableCellView: NSTableCellView {
    // MARK: - Outlets
    @IBOutlet weak var title: NSTextField!
    @IBOutlet weak var sender: NSTextField!
    @IBOutlet weak var time: NSTextField!
    @IBOutlet weak var snippet: NSTextField!

    // MARK: - Mouse hover
    deinit {
        removeTrackingArea(trackingArea)
    }

    private var trackingArea: NSTrackingArea!

    override func awakeFromNib() {
        super.awakeFromNib()
        self.trackingArea = NSTrackingArea(
            rect: bounds,
            options: [NSTrackingAreaOptions.activeAlways, NSTrackingAreaOptions.mouseEnteredAndExited,/* NSTrackingAreaOptions.mouseMoved */],
            owner: self,
            userInfo: nil
        )
        addTrackingArea(trackingArea)
    }

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

        NSColor(red: 0.96, green: 0.96, blue: 0.96, alpha: 1.00).set()

        // mouse hover
        if highlight {
            let path = NSBezierPath(rect: bounds)
            path.fill()
        }

        // draw divider
        let rect = NSRect(x: 0, y: bounds.height - 2, width: bounds.width, height: bounds.height)
        let path = NSBezierPath(rect: rect)
        path.fill()
    }

    private var highlight = false {
        didSet {
            setNeedsDisplay(bounds)
        }
    }

    override func mouseEntered(with event: NSEvent) {
        super.mouseEntered(with: event)
        if !highlight {
            highlight = true
        }
    }

    override func mouseExited(with event: NSEvent) {
        super.mouseExited(with: event)
        if highlight {
            highlight = false
        }
    }
}