如何在SwiftUI中更改NSTextView中的选择颜色？

huangapple
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英文:

How to change the selection color in an NSTextView in SwiftUI?

问题

我正在使用SwiftUI和NSViewRepresentable来创建一个自定义的NSTextView，可以显示可选文本。这是我的代码：

  1.     struct SelectableText: NSViewRepresentable {
  2.         let text: String
  3.         let font: NSFont?
  4.         
  5.         init(text: String, font: NSFont? = nil) {
  6.             self.text = text
  7.             self.font = font
  8.         }
  9.         
  10.         func makeNSView(context: Context) -> NSTextField {
  11.             let textField = NSTextField(wrappingLabelWithString: text)
  12.             textField.isBezeled = false
  13.             textField.isEditable = false
  14.             textField.isSelectable = true
  15.             textField.backgroundColor = .clear
  16.             textField.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  17.             return textField
  18.         }
  19.         
  20.         func updateNSView(_ nsView: NSTextField, context: Context) {
  21.             nsView.stringValue = text
  22.             nsView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  23.         }
  24.     }

我想要更改NSTextView中选择高亮的颜色。我尝试设置selectedTextAttributes属性，但它没有按预期工作。NSTextView没有接收到处理文本选择所需的事件。

在SwiftUI中，我该如何更改NSTextView中的选择颜色？任何帮助将不胜感激。

英文:

I'm using SwiftUI and NSViewRepresentable to create a custom NSTextView that can display selectable text. Here's my code:

  1. struct SelectableText: NSViewRepresentable {
  2.     let text: String
  3.     let font: NSFont?
  4.     
  5.     init(text: String, font: NSFont? = nil) {
  6.         self.text = text
  7.         self.font = font
  8.     }
  9.     
  10.     func makeNSView(context: Context) -> NSTextField {
  11.         let textField = NSTextField(wrappingLabelWithString: text)
  12.         textField.isBezeled = false
  13.         textField.isEditable = false
  14.         textField.isSelectable = true
  15.         textField.backgroundColor = .clear
  16.         textField.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  17.         return textField
  18.     }
  19.     
  20.     func updateNSView(_ nsView: NSTextField, context: Context) {
  21.         nsView.stringValue = text
  22.         nsView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  23.     }
  24. }

I want to change the color of the selection highlight in the NSTextView. I tried setting the selectedTextAttributes property, but it didn't work as expected. The NSTextView is not receiving the events it needs to handle text selection correctly.

How can I change the selection color in an NSTextView in SwiftUI? Any help would be greatly appreciated.

答案1

得分: 1

If you meant NSTextView, here is a possible approach:

  1. struct SelectableTextView: NSViewRepresentable {
  2.     let text: String
  3.     let font: NSFont?
  4.     
  5.     init(text: String, font: NSFont? = nil) {
  6.         self.text = text
  7.         self.font = font
  8.     }
  9.     
  10.     func makeNSView(context: Context) -> NSTextView {
  11.         let textView = NSTextView(frame: .zero)
  12.         textView.isEditable = false
  13.         textView.isSelectable = true
  14.         textView.backgroundColor = .clear
  15.         textView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  16.         textView.string = text
  17.         
  18.         textView.selectedTextAttributes = [
  19.             NSAttributedString.Key.foregroundColor : NSColor.systemGreen, // Change the text color
  20.             NSAttributedString.Key.backgroundColor: NSColor.systemRed// Change the background color
  21.         ]
  22.         return textView
  23.     }
  24.     
  25.     func updateNSView(_ nsView: NSTextView, context: Context) {
  26.         nsView.string = text
  27.         nsView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  28.     }
  29. }
英文:

If you meant NSTextView, here is a possible approach:

  1. struct SelectableTextView: NSViewRepresentable {
  2.     let text: String
  3.     let font: NSFont?
  4.     
  5.     init(text: String, font: NSFont? = nil) {
  6.         self.text = text
  7.         self.font = font
  8.     }
  9.     
  10.     func makeNSView(context: Context) -> NSTextView {
  11.         let textView = NSTextView(frame: .zero)
  12.         textView.isEditable = false
  13.         textView.isSelectable = true
  14.         textView.backgroundColor = .clear
  15.         textView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  16.         textView.string = text
  17.         
  18.         textView.selectedTextAttributes = [
  19.             NSAttributedString.Key.foregroundColor : NSColor.systemGreen, // Change the text color
  20.             NSAttributedString.Key.backgroundColor: NSColor.systemRed// Change the background color
  21.         ]
  22.         return textView
  23.     }
  24.     
  25.     func updateNSView(_ nsView: NSTextView, context: Context) {
  26.         nsView.string = text
  27.         nsView.font = font ?? NSFont.systemFont(ofSize: NSFont.systemFontSize)
  28.     }
  29. }

huangapple
  • 本文由 发表于 2023年6月9日 00:42:48
  • 转载请务必保留本文链接：https://go.coder-hub.com/76434046.html
  • appkit
  • macos
  • nstextview
  • swift
  • swiftui
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