swift - NSImageView mouseDragged 值传递回 windowController

Question

谁能告诉我如何将位置 X 和 Y 返回到我的 WindowController NSTextField(testTextX 和 testTextY)？

我以编程方式创建了一个 windowController、NSImage 和 NSTextField。我向 NSView 添加了一个图像“点”，并且希望“点”图像可拖动并返回位置 X 和 Y。

我设法添加了图像并可拖动，但我不知道如何将 mouseDragged 上的位置 X 和 Y 传递回我的 WindowController 处的 NSTextField(testTextX 和 testTextY)？

当前显示如下，点击“点”图片可拖动到任意位置。

当图像被拖动时，我可以从 NSImageView func mouseDragged(theEvent: NSEvent) 打印出位置 X 和 Y。

我陷入了如何将位置 X 和 Y 传递回 WindowController 的困境。

我的WindowController.swift代码如下:

public class MyWindowController: NSWindowController, NSWindowDelegate {
    // MARK: Constants
    // 1. Define min&max window size
    var fWidth:CGFloat = 0
    var fHeight:CGFloat = 0
    var vWidth:CGFloat = 0
    var vHeight:CGFloat = 0
    var blankPage: NSView!

    var viewDotImg: NSImageView!
    var testTextX: NSTextField!
    var testTextY: NSTextField!

    var modalWinHeight: CGFloat = 0
    var m_window:NSWindow = NSWindow()

    // MARK: Initializer
    init(){
        super.init(window: self.m_window)
    }

    init(channelId:Int){
        super.init(window:self.m_window)

        // Get the window full width and height
        fWidth = (NSScreen.mainScreen()?.frame.width)!
        fHeight = (NSScreen.mainScreen()?.frame.height)!

        // Get the window visible width and height
        vWidth = (NSScreen.mainScreen()?.visibleFrame.width)!
        vHeight = (NSScreen.mainScreen()?.visibleFrame.height)!

        // Get the position X and Y for Window
        let winPosX: CGFloat = fWidth - vWidth
        let winPosY: CGFloat = fHeight - vHeight

        // Divide the height by 3
        let avgHeight: CGFloat = vHeight / 3

        // Set the max window height as avgHeight * 1.3
        let modalWinHeight: CGFloat = avgHeight * 1.3

        // Set the window frame
        self.m_window = NSWindow(contentRect: NSMakeRect(winPosX, winPosY, vWidth, modalWinHeight),
            styleMask: NSClosableWindowMask | NSMiniaturizableWindowMask | NSTitledWindowMask,
            backing: NSBackingStoreType.Buffered, `defer`: false);

        // Window delegate
        self.m_window.delegate = self

        // Add a blank NSView with Gradian background colour
        blankPage = CGradiantBlank(x: x, y:y, width:width, height: height)
        self.window?.contentView = blankPage

        // Add Image Dot to NSView
        viewDotImg = DragNSImageView(x: 200, y: 200, width: 10, height: 10)

        // Add Two TextField to NSView
        testTextX = TextLabel(x: 200, y: 10, width: 100, height: 24, value: "100")
        testTextY = TextLabel(x: 305, y: 10, width: 100, height: 24, value: "100")

        blankPage.addSubview(viewDotImg)
        blankPage.addSubview(testTextX)
        blankPage.addSubview(testTextY)
    }

    func updTestXY(x:Double, y:Double){
        testTextX.stringValue = String(x)
        testTextY.stringValue = String(y)
    }

    override public init(window: NSWindow?) {
        super.init(window: window)
    }

    required public init?(coder:NSCoder){
        super.init(coder: coder)
    }    
}

我的NSImageView代码如下:

public class DragNSImageView: NSImageView {
    private var xWidth: CGFloat = 0
    private var xHeight: CGFloat = 0

    init(x:CGFloat, y:CGFloat, width:CGFloat, height:CGFloat, chId: Int) {
        super.init(frame: NSRect(x: x,y: y,width: width,height: height))
        super.imageScaling = NSImageScaling.ScaleAxesIndependently
        super.image = NSImage(named: "dot-10")
        xWidth = width
        xHeight = height
    }

    required public init?(coder: NSCoder) {
        super.init(coder: coder)
    }

    override public func drawRect(dirtyRect: NSRect) {
        super.drawRect(dirtyRect)
    }

    public override func mouseDragged(theEvent: NSEvent) {
        super.mouseDown(theEvent)
        let location = theEvent.locationInWindow
        let pX: CGFloat = location.x
        let pY: CGFloat = location.y
        super.frame = NSRect(x: pX,y: pY,width: xWidth,height: xHeight)
        Swift.print("X: \(location.x)" Y: \(location.y))
        /* How to pass this location.x and location.y back to WindowController func updateTestXY()? 

        updTestXY(Double(location.x), y:Double(location.y))
        */
    }
}

我的 NSTextField 代码如下:

public class TextLabel: NSTextField {
    // MARK: Initializer
    init(){
        super.init(frame: NSRect(x: 0, y: 0, width: 90, height: 10))
    }

    convenience init(x:CGFloat, y:CGFloat, width:CGFloat, height:CGFloat, value:String){
        self.init()
        super.wantsLayer = true
        super.backgroundColor = NSColor.darkGrayColor()
        super.textColor = NSColor.whiteColor()
        super.stringValue = value
        super.frame = NSRect(x: x, y: y, width: width, height: height)
    }

    required public init?(coder: NSCoder) {
        super.init(coder: coder)
    }

    override public func drawRect(dirtyRect: NSRect) {
        super.drawRect(dirtyRect)
    }
}

Answer 1

好的，我找到了解决方案。

let mainWindow = self.window?.windowController as! MyWindowController
mainWindow.updXY(location.x, y:location.y, refName: refName)

如果有多个“点”图像，则将以下代码添加到 NSImageView init() 中

super.identifier = "ReferenceName1"

现在，转到 NSImageView mouseDragged(theEvent: NSEvent) 方法并添加以下行:

let refName = super.identifier

这将在 MyWindowController 中使用来检测调用指定函数时拖动了哪个“点”图像。就我而言，我称之为

updXY(location.x, y:location.y, refName: refName)

因此，在 MyWindowController 中，我使用以下代码来完成工作。

public func updXy(x: CGFloat, y: CGFloat, refName: String){
    if refName == "ReferenceName1" {

    }else if refName == "ReferenceName2" {

    }
}