这次研究的目标是NSTextView 控件的文本处理图片处理问题
这是一个初步演示，在这里我们建立一个类来处理文本的写入问题。你建立一个Cocoa工程，然后在View里拖入一个NSTextView对象，并在
ViewController类中添加 textView 变量。然后在viewDidLoad() 函数中添加代码。令人你需要找一个girl.jpg文件，也拖入工程。
用到的代码全部列在后面，就不解释了。
里面添加代码。
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let attachmentCell = NSTextAttachmentCell(imageCell: NSImage(named: "girl.jpg"))
let attachment = NSTextAttachment()
attachment.attachmentCell = attachmentCell
let attributedStr = NSAttributedString(attachment: attachment)
self.textView.textStorage?.insert(attributedStr,at: 0)
let designer = TextAttributedDesigner("Designer Example")
designer.newline()
designer.append("ForegroundColor",attrType: .foregroundColor(NSColor.blue))
designer.newline()
designer.append("BackgroundColor",attrType: .backgroundColor(NSColor.lightGray))
designer.newline()
designer.append("Font (Cochin-BoldItalic)",attrType: .font(NSFont(name: "Cochin-BoldItalic",size: 30)!))
designer.newline()
let para = NSMutableParagraphStyle()
para.alignment = .center
designer.append("this is paragraph text,the text is so length over than normal text line.",attrType: AttributeItemType.paragraphStyle(para))
designer.newline()
let para1 = NSMutableParagraphStyle()
para1.firstLineHeadindent = 20
designer.append("this is left indent text,the text is so length than normal text line.this is left indent text,the text is so length over than normal text line.this is backgroundColor indent text,attrType: AttributeItemType.paragraphStyle(para1))
designer.newline()
designer.append("ligature",attrType: .ligature(0))
designer.newline()
designer.append("the kern is long.",attrType: .kern(4))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(4))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(3))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(2))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(1))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(0))
designer.newline()
designer.append("strikethrough",attrType: .strikethrough(9))
designer.newline()
designer.append("underline",attrType: .underline(5))
designer.newline()
designer.append("underline",attrType: .underline(3))
designer.newline()
designer.append("underline",attrType: .underline(1))
designer.newline()
designer.append("underline",attrType: .underline(0))
designer.newline()
designer.append("strokeColor",attrType: .strokeColor(NSColor.blue))
designer.newline()
let shdw = NSShadow()
shdw.shadowColor = NSColor.brown
shdw.shadowBlurRadius = 3
shdw.shadowOffset = NSMakeSize(3,-3)
designer.append("Shadow",attrType: .shadow(shdw))
designer.newline()
designer.append("TextEffect",attrType: .textEffect(NSTextEffectLetterpressstyle as Nsstring))
designer.newline()
designer.append(" Many Font (Cochin-BoldItalic)",attrTypes: [ .font(NSFont(name: "Cochin-BoldItalic",size: 30)!),.strokeColor(NSColor.blue),.strokeWidth(0.5)])
designer.newline()
designer.newline()
// 如果想有外框效果。
designer.append("OUTLINE",attrTypes: [.strokeColor(NSColor.blue),.strokeWidth(1) ])
designer.newline()
self.textView.insertText( designer.attributedString,replacementRange: NSMakeRange(0,0))
}
支持上面写法的一个文本支持支持类：
//
// TextAttributedDesigner.swift
// TestTextKit
//
// Created by wuzhiqiang on 2016/10/11.
// copyright © 2016年 wuzhiqiang. All rights reserved.
//
import Cocoa
public enum AttributeItemType {
case font(NSFont)
case paragraphStyle(NSParagraphStyle)
case foregroundColor(NSColor)
case backgroundColor(NSColor)
case ligature(NSNumber) // 是否使用连字符
case kern(NSNumber) // 字距调整
case strikethrough(NSNumber)
case underline(NSNumber)
case strokeColor(NSColor)
case strokeWidth(NSNumber)
case shadow(NSShadow)
case textEffect(Nsstring)
case attachment(NSTextAttachment)
case link(NSURL)
case baselineOffset(NSNumber)
case obliqueness(NSNumber)
case expansion(NSNumber)
case writingDirection([NSNumber])
case verticalGlyphForm(NSNumber)
case markedClauseSegment(NSNumber)
case textAlternatives(NSTextAlternatives)
case spellingState(NSNumber)
case cursor(NSNumber)
case toolTip(Nsstring?)
public var key: String {
switch self {
case .font: return NSFontAttributeName
case .paragraphStyle: return NSParagraphStyleAttributeName
case .foregroundColor: return NSForegroundColorAttributeName
case .backgroundColor: return NSBackgroundColorAttributeName
case .ligature: return NSligatureAttributeName
case .kern: return NSKernAttributeName
case .strikethrough: return NsstrikethroughStyleAttributeName
case .underline: return NSUnderlinestyleAttributeName
case .strokeColor: return NSstrokeColorAttributeName
case .strokeWidth: return NSstrokeWidthAttributeName
case .shadow: return NSShadowAttributeName
case .textEffect: return NSTextEffectAttributeName
case .attachment: return NSAttachmentAttributeName
case .link: return NSLinkAttributeName
case .baselineOffset: return NSBaselineOffsetAttributeName
case .obliqueness: return NSObliquenessAttributeName
case .expansion: return NSExpansionAttributeName
case .writingDirection: return NSWritingDirectionAttributeName
case .verticalGlyphForm: return NsverticalGlyphFormAttributeName
case .markedClauseSegment: return NSMarkedClauseSegmentAttributeName
case .textAlternatives: return NSTextAlternativesAttributeName
case .spellingState: return NsspellingStateAttributeName
case .cursor: return NSCursorAttributeName
case .toolTip: return NSToolTipAttributeName
}
}
public var keyvaluePair: [String: Any] {
switch self {
case .font(let value): return [self.key : value]
case .paragraphStyle(let value): return [self.key : value]
case .foregroundColor(let value): return [self.key : value]
case .backgroundColor(let value): return [self.key : value]
case .ligature(let value): return [self.key : value]
case .kern(let value): return [self.key : value]
case .strikethrough(let value): return [self.key : value]
case .underline(let value): return [self.key : value]
case .strokeColor(let value): return [self.key : value]
case .strokeWidth(let value): return [self.key : value]
case .shadow(let value): return [self.key : value]
case .textEffect(let value): return [self.key : value]
case .attachment(let value): return [self.key : value]
case .link(let value): return [self.key : value]
case .baselineOffset(let value): return [self.key : value]
case .obliqueness(let value): return [self.key : value]
case .expansion(let value): return [self.key : value]
case .writingDirection(let value): return [self.key : value]
case .verticalGlyphForm(let value): return [self.key : value]
case .markedClauseSegment(let value): return [self.key : value]
case .textAlternatives(let value): return [self.key : value]
case .spellingState(let value): return [self.key : value]
case .cursor(let value): return [self.key : value]
case .toolTip(let value): return [self.key : value]
}
}
}
public struct TextAttributedDesigner {
internal let attrText = NSMutableAttributedString()
public var attributedString: NSAttributedString {
return attrText
}
// Texkit Support
public init(_ text: String,attrType: AttributeItemType? = nil ){
self.append(text,attrType: attrType )
}
public func newline(attrType: AttributeItemType? = nil){
self.append( "\r\n",attrType: attrType )
}
public func append(_ text: String,attrType: AttributeItemType? = nil ){
let attr = NSAttributedString(string: text,attributes: attrType?.keyvaluePair )
self.attrText.append( attr )
}
public func insert(_ text: String,at loc: Int,attributes: attrType?.keyvaluePair )
self.attrText.insert( attr,at: loc)
}
public func append(_ text: String,attrTypes: [AttributeItemType] ){
let attr = NSAttributedString(string: text,attributes: ItemTypestoDict(attrTypes: attrTypes) )
self.attrText.append( attr )
}
public func insert(_ text: String,attributes: ItemTypestoDict(attrTypes: attrTypes) )
self.attrText.insert( attr,at: loc)
}
//////////
private func ItemTypestoDict(attrTypes: [AttributeItemType] )->[String: Any] {
var dict = [String:Any]()
for attr in attrTypes {
let keyvalue = attr.keyvaluePair
for (key,value) in keyvalue {
dict[key] = value
}
}
return dict
}
}
这里的代码简化了NSTextView的文本和图片的插入。