自定义NSButton未按预期显示

编程问答 2023-02-13

问题描述

我正在尝试制作一个带有圆角，阴影和平面的自定义NSButton。

这就是我想要的样子（HTML / CSS演示here）：

enter image description here

（部分粗体标签和悬停效果超出范围）

我正在使用以下代码：

@IBDesignable class FlatButton: NSButton {
    @IBInspectable let backgroundColor: NSColor = .white

    override func draw(_ dirtyRect: NSRect) {
        // Set corner radius
        self.wantsLayer = true
        self.layer?.cornerRadius = 18
        self.layer?.borderWidth = 0
        self.layer?.borderColor = backgroundColor.cgColor
        layer?.backgroundColor = backgroundColor.cgColor
        frame.size.height = 32
        
        // Darken background color when highlighted
        if isHighlighted {
            layer?.backgroundColor =  backgroundColor.blended(
                withFraction: 0.2,of: .black
            )?.cgColor
        } else {
            layer?.backgroundColor = backgroundColor.cgColor
        }
        
        self.shadow = NSShadow()
        self.layer?.shadowOffset = CGSize(width: 8,height: 18)
        self.layer?.shadowColor = .black
        self.layer?.shadowRadius = 9
        self.layer?.masksToBounds = true
        self.layer?.shadowOpacity = 0.5
        
        // Super
        super.draw(dirtyRect)
    }
}

但是这是我从代码中得到的：

（带有边框）

enter image description here

（无边框）

enter image description here

解决方法

对于您的问题，我可能不了解，但是从NSView子类创建自定义按钮并使用鼠标事件似乎可以正常工作。悬停功能可以添加跟踪区域。

import Cocoa

var isSelected : Bool
isSelected = false

class CustomView: NSView {

 override func draw(_ rect: NSRect ) {
 super.draw(rect)
 let backgroundColor: NSColor = .white

 // Set corner radius
 self.wantsLayer = true
 self.layer?.cornerRadius = 18
 self.layer?.borderWidth = 0
 self.layer?.borderColor = backgroundColor.cgColor
 layer?.backgroundColor = backgroundColor.cgColor
 frame.size.height = 32
 
 // Shadow
 self.shadow = NSShadow()
 self.layer?.shadowOffset = CGSize(width: 8,height: 18)
 self.layer?.shadowColor = .black
 self.layer?.shadowRadius = 9
 self.layer?.masksToBounds = false
 self.layer?.shadowOpacity = 0.5
       
 // Darken background color when selected
  if isSelected {
   layer?.backgroundColor = backgroundColor.blended( withFraction: 0.2,of: .black )?.cgColor
   } else {
   layer?.backgroundColor = backgroundColor.cgColor
  }

 // Add attributed text
 let text: NSString = "Custom button test"
 let font = NSFont.systemFont(ofSize: 22)
 let attr: [NSAttributedString.Key: Any] = [.font: font,.foregroundColor: NSColor.red]
 text.draw(at:NSMakePoint(50,5),withAttributes:attr)
}

override func mouseDown(with event: NSEvent) {
 print("mouse down in button.")
 isSelected = true
 self.needsDisplay = true 
}

override func mouseUp(with event: NSEvent) {
 print("mouse up in button.")
 isSelected = false
 self.needsDisplay = true
}

}

class ApplicationDelegate: NSObject,NSApplicationDelegate {

func buildMenu() {
let mainMenu = NSMenu()
 NSApp.mainMenu = mainMenu
 // **** App menu **** //
 let appMenuItem = NSMenuItem()
 mainMenu.addItem(appMenuItem)
 let appMenu = NSMenu()
 appMenuItem.submenu = appMenu
 appMenu.addItem(withTitle: "Quit",action:#selector(NSApplication.terminate),keyEquivalent: "q") 
}

func buildWnd() {
 let _wndW : CGFloat = 500
 let _wndH : CGFloat = 400

let window = NSWindow(contentRect: NSMakeRect( 0,_wndW,_wndH ),styleMask:[.titled,.closable,.miniaturizable,.resizable],backing: .buffered,defer: false)
 window.center()
 window.title = "Swift Test Window"
 window.makeKeyAndOrderFront(window)

// **** Custom view **** //
 let view = CustomView( frame:NSMakeRect(60,_wndH - 160,300,32)) 
 view.autoresizingMask = [.width,.height]      
 window.contentView!.addSubview (view)
    
// **** Quit btn **** //
 let quitBtn = NSButton (frame:NSMakeRect( _wndW - 50,10,40,40 ))
 quitBtn.bezelStyle = .circular
 quitBtn.autoresizingMask = [.minXMargin,.maxYMargin]
 quitBtn.title = "Q"
 quitBtn.action = #selector(NSApplication.terminate)
 window.contentView!.addSubview(quitBtn)
}
 
func applicationDidFinishLaunching(_ notification: Notification) {
 buildMenu()
 buildWnd()
}

func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
 return true
}

}
let applicationDelegate = ApplicationDelegate()

let application = NSApplication.shared
application.setActivationPolicy(NSApplication.ActivationPolicy.regular)
application.delegate = applicationDelegate
application.activate(ignoringOtherApps:true)
application.run()
,

为了减少绘图功能的工作量，初始化窗口时可以进行很多视图自定义：

import Cocoa

var isSelected : Bool
isSelected = false

class CustomView: NSView {

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

 let backgroundColor: NSColor = .white
       
 // Darken background color when selected
 if isSelected {
  layer?.backgroundColor = backgroundColor.blended( withFraction: 0.2,of: .black )?.cgColor
  } else {
  layer?.backgroundColor = backgroundColor.cgColor
 }

 // Add attributed text
 let text: NSString = "Custom button text"
 let font = NSFont.systemFont(ofSize: 22)
 let attr: [NSAttributedString.Key: Any] = [.font: font,withAttributes:attr)
}

func myBtnAction( ) {
  NSSound.beep()
}

override func mouseDown(with event: NSEvent) {
 print("mouse down in button.")
 isSelected = true
 self.needsDisplay = true 
}

override func mouseUp(with event: NSEvent) {
 print("mouse up in button.")
 isSelected = false
 myBtnAction()
 self.needsDisplay = true
}

}

class ApplicationDelegate: NSObject,32)) 
 view.autoresizingMask = [.maxXMargin,.minYMargin]       
 view.wantsLayer = true
 view.layer?.borderColor = NSColor.blue.cgColor
 view.layer?.cornerRadius = 18
 view.layer?.borderWidth = 2
 view.layer?.shadowColor = NSColor.black.cgColor
 view.layer?.shadowRadius = 9
 view.layer?.shadowOpacity = 0.5
 view.layer?.masksToBounds = false
 window.contentView!.addSubview (view)

// **** Quit btn **** //
 let quitBtn = NSButton (frame:NSMakeRect( _wndW - 50,.maxYMargin]
 quitBtn.title = "Q"
 quitBtn.action = #selector(NSApplication.terminate)
 window.contentView!.addSubview(quitBtn)
}
 
func applicationDidFinishLaunching(_ notification: Notification) {
 buildMenu()
 buildWnd()
}

func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
 return true
}

}
let applicationDelegate = ApplicationDelegate()

let application = NSApplication.shared
application.setActivationPolicy(.regular)
application.delegate = applicationDelegate
application.activate(ignoringOtherApps:true)
application.run()
,

以下是对Marc Marset描述的代码中创建NSButton的技术的修改（上面已引用），该技术应满足您的要求。 “ customNSButton”功能将允许创建多个按钮，并通过Target-Action为每个按钮设置个性化操作。计时器用于“眨眼”背景颜色，并在按钮下方创建阴影。标题是文字。

import Cocoa

class AppDelegate: NSObject,NSApplicationDelegate {
var window:NSWindow!
var button:NSButton!

@objc func resetBkgrndColor(_ sender:AnyObject) {
 let backgroundColor: NSColor = .white
 button.layer?.backgroundColor = backgroundColor.cgColor
}

@objc func myBtnAction(_ sender:AnyObject ) {
 let backgroundColor: NSColor = .white
 button.layer?.backgroundColor = backgroundColor.blended( withFraction: 0.2,of: .black )?.cgColor
 Timer.scheduledTimer(timeInterval:0.25,target:self,selector:#selector(self.resetBkgrndColor(_:)),userInfo:nil,repeats:false)
 NSSound.beep()
}

func customNSButton( bkgrndColor: NSColor?,borderColor: NSColor?,borderWidth: CGFloat?,cornerRadius: CGFloat? ) -> NSButton {        
 button = NSButton()
    
 button.wantsLayer = true
 button.layer?.backgroundColor = bkgrndColor?.cgColor ?? .clear
 button.layer?.masksToBounds = true
 button.layer!.cornerRadius = cornerRadius ?? 0
 button.layer!.borderColor = borderColor?.cgColor
 button.layer!.borderWidth = borderWidth ?? 0

 button.layer?.shadowOffset = CGSize(width: 8,height: 18)
 button.layer?.shadowColor = .black
 button.layer?.shadowRadius = 9
 button.layer?.masksToBounds = false
 button.layer?.shadowOpacity = 0.5
      
 return button
}

func buildMenu() {
 let mainMenu = NSMenu()
 NSApp.mainMenu = mainMenu
 // **** App menu **** //
 let appMenuItem = NSMenuItem()
 mainMenu.addItem(appMenuItem)
 let appMenu = NSMenu()
 appMenuItem.submenu = appMenu
 appMenu.addItem(withTitle: "Quit",keyEquivalent: "q") 
}
    
func buildWnd() {
    
let _wndW : CGFloat = 400
let _wndH : CGFloat = 300

 window = NSWindow(contentRect:NSMakeRect(0,_wndH),backing:.buffered,defer:false)
 window.center()
 window.title = "Swift Test Window"
 window.makeKeyAndOrderFront(window)

// **** Custom Button **** //
 let myBtn = customNSButton(bkgrndColor:.white,borderColor:.black,borderWidth:2,cornerRadius:22)
 myBtn.frame = NSMakeRect(60,120,40)
 myBtn.bezelStyle = .roundRect
 myBtn.isBordered = false
 myBtn.attributedTitle = NSAttributedString(string: "Btn Text",attributes: [.foregroundColor: NSColor.red,.font:NSFont(name:"Menlo Bold",size:28)])
 myBtn.action = #selector(self.myBtnAction(_:))
 window.contentView!.addSubview(myBtn)

// **** Quit btn **** //
 let quitBtn = NSButton (frame:NSMakeRect( _wndW - 50,.maxYMargin]
 quitBtn.title = "Q"
 quitBtn.action = #selector(NSApplication.terminate)
 window.contentView!.addSubview(quitBtn)

}
 
func applicationDidFinishLaunching(_ notification: Notification) {
 buildMenu()
 buildWnd()
}

func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
 return true
}

}
let appDelegate = AppDelegate()

// **** main.swift **** //
let app = NSApplication.shared
app.delegate = appDelegate
app.setActivationPolicy(.regular)
app.activate(ignoringOtherApps:true)
app.run()
appkitcocoacocoamacosnsbuttonswiftswiftswift

相关问答

导入项目后报错问题
依赖报错 idea导入项目后依赖报错，解决方案：https://blog....
idea不能识别yaml文件
使用mybatis plus常见错误
错误1：代码生成器依赖和mybatis依赖冲突 启动项目时报错如下...
gradle常见问题与错误
错误1：gradle项目控制台输出为乱码 # 解决方案：https://bl...
Mybatis Plus传入参数0不起作用
错误还原：在查询的过程中，传入的workType为0时，该条件不起...
linux中make编译源码包失败
报错如下，gcc版本太低 ^ server.c:5346:31: 错误：‘struct...