Question

我是macos的新手。我正在为macOS开发一个应用，其中希望用户拥有侧面板，并且他可以根据需要隐藏/取消隐藏。

我已使用split view将屏幕分为3部分。左右面板与视图（非拆分视图）的宽度成比例。

我想要的是当用户隐藏左面板时，左窗格应该隐藏自身，并且窗口的左锚点应移到右侧，而右锚点应保持在其位置。

类似地，如果用户隐藏右面板，则右面板也应该被隐藏。窗口的右锚点应向左移动，左锚点应保持在其位置。

当用户想要隐藏/取消隐藏左面板时，将调用以下函数。

guard let window = self.view.window else {
            return
        }
        var frame = window.frame

    if window.isZoomed {
        if leftPane.contentView!.isHidden {
            self.leftPane.isHidden = false
            self.leftPane.contentView?.isHidden = false
        } else {
            self.leftPane.contentView?.isHidden = true
        }
    } else {
        if leftPaneHidden {
            self.leftPane.isHidden = false
            frame = NSRect(x: (frame.origin.x - leftPane.frame.size.width), y: frame.origin.y, width: (frame.size.width + leftPane.frame.size.width), height: frame.size.height)
            leftPaneHidden = false
        } else {
            self.leftPane.isHidden = true
            frame = NSRect(x: (frame.origin.x + leftPane.frame.size.width), y: frame.origin.y, width: (frame.size.width - leftPane.frame.size.width), height: frame.size.height)
            leftPaneHidden = true
        }

        self.view.window?.setFrame(frame, display: true, animate: true)

我希望隐藏左侧面板，因为它可在知名度应用程序中使用。

Answer 1

如果您确实想让窗口缩小/扩展，那么这里是一个有效的演示。如果您希望它按照Xcode的方式工作，请删除与框架相关的内容。它是通过程序实现的，因此我不必描述情节提要，但是您可以轻松地使用情节提要执行相同的操作。左右视图中唯一的代码设置背景色，以便您可以看到它的工作原理。

SplitViewController：

class MainSplitViewController: NSSplitViewController {
    weak var leftItem: NSSplitViewItem?
    weak var rightItem: NSSplitViewItem?

    convenience init(identifier: NSUserInterfaceItemIdentifier) {
        self.init()
        splitView.identifier = identifier
        splitView.wantsLayer = true
        splitView.layer?.backgroundColor = NSColor.darkGray.cgColor
        splitView.dividerStyle = .thin

        let vcL = SubViewController(NSView(), backgroundColor: .red)
        let vcM = MainViewController(MainView(self), backgroundColor: .green)
        let vcR = SubViewController(NSView(), backgroundColor: .blue)

        vcL.view.widthAnchor.constraint(greaterThanOrEqualToConstant: 100).isActive = true
        vcM.view.widthAnchor.constraint(greaterThanOrEqualToConstant: 100).isActive = true
        vcR.view.widthAnchor.constraint(greaterThanOrEqualToConstant: 100).isActive = true

        let sidebarItem = NSSplitViewItem(viewController: vcL)
        sidebarItem.canCollapse = true
        sidebarItem.holdingPriority = NSLayoutConstraint.Priority(NSLayoutConstraint.Priority.defaultLow.rawValue + 1)
        addSplitViewItem(sidebarItem)
        leftItem = sidebarItem

        let mainItem = NSSplitViewItem(viewController: vcM)
        addSplitViewItem(mainItem)

        let inspItem = NSSplitViewItem(viewController: vcR)
        inspItem.canCollapse = true
        inspItem.holdingPriority = NSLayoutConstraint.Priority(NSLayoutConstraint.Priority.defaultLow.rawValue + 1)
        addSplitViewItem(inspItem)
        rightItem = inspItem
    }
}

中间视图，带有用于切换侧视图的按钮：

class MainView: NSView, DebugHelper {
    weak var splitViewController: MainSplitViewController?

    func labeledButton(_ stringValue: String = "") -> NSButton {
        let button = NSButton()
        button.translatesAutoresizingMaskIntoConstraints = false
        button.heightAnchor.constraint(equalToConstant: 28.0)
        button.bezelStyle = NSButton.BezelStyle.rounded
        button.title = stringValue
        return button
    }
    private func adjustWindowFrame(_ item: NSSplitViewItem, left: Bool) {
        let view = item.viewController.view
        let frame = window!.frame
        if item.isCollapsed {
            let minX = left ? frame.minX - view.frame.width : frame.minX
            let newFrame = NSRect(x: minX, y: frame.minY, width: frame.width + view.frame.width, height: frame.height)
            window!.setFrame(newFrame, display: true)
        } else {
            let minX = left ? frame.minX + view.frame.width : frame.minX
            let newFrame = NSRect(x: minX, y: frame.minY, width: frame.width - view.frame.width, height: frame.height)
            window!.setFrame(newFrame, display: true)
        }
        item.isCollapsed = !item.isCollapsed
    }
    @objc func collapseLeft(_ sender: Any) {
        guard let item = splitViewController?.leftItem else { return }
        adjustWindowFrame(item, left: true)
    }
    @objc func collapseRight(_ sender: Any) {
        guard let item = splitViewController?.rightItem else { return }
        adjustWindowFrame(item, left: false)
    }

    convenience init(_ parent: MainSplitViewController) {
        self.init(frame: .zero)
        splitViewController = parent
        translatesAutoresizingMaskIntoConstraints = false

        let lButton = labeledButton("Collapse Left")
        addSubview(lButton)
        lButton.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20).isActive = true
        lButton.centerXAnchor.constraint(equalTo: centerXAnchor, constant: -100).isActive = true
        lButton.action = #selector(collapseLeft)
        lButton.target = self

        let rButton = labeledButton("Collapse Right")
        addSubview(rButton)
        rButton.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20).isActive = true
        rButton.centerXAnchor.constraint(equalTo: centerXAnchor, constant: 100).isActive = true
        rButton.action = #selector(collapseRight)
        rButton.target = self
    }

}
class MainViewController: NSViewController {

    convenience init(_ view: NSView, backgroundColor: NSColor = .white) {
        self.init()
        self.view = view
        self.view.wantsLayer = true
        self.view.layer?.backgroundColor = backgroundColor.cgColor
    }
}

NSWindow宽度未使用setFrame（frame，display，animate）

1 个答案: