KCD/StrokeTextFieldCell.swift

   1 //
   2 //  StrokeTextFieldCell.swift
   3 //  KCD
   4 //
   5 //  Created by Hori,Masaki on 2017/01/01.
   6 //  Copyright © 2017年 Hori,Masaki. All rights reserved.
   7 //
   8
   9 import Cocoa
  10
  11 class StrokeTextFieldCell: NSTextFieldCell {
  12     private static let boarderWidth: CGFloat = 2.0
  13
  14     private let layoutManager: NSLayoutManager
  15     private let textContainer: NSTextContainer
  16
  17     required init(coder: NSCoder) {
  18         layoutManager = NSLayoutManager()
  19         textContainer = NSTextContainer()
  20         super.init(coder: coder)
  21         layoutManager.addTextContainer(textContainer)
  22     }
  23
  24     override func drawInterior(withFrame cellFrame: NSRect, in controlView: NSView) {
  25         let attributedString = attributedStringValue
  26         if attributedString.string.hasSuffix("/") {
  27             super.drawInterior(withFrame: cellFrame, in: controlView)
  28             return
  29         }
  30         let attribute = attributedString.attributes(at: 0, effectiveRange: nil)
  31         guard let forgroundColor = attribute[NSForegroundColorAttributeName] as? NSColor else { return }
  32         if forgroundColor == NSColor.controlTextColor {
  33             super.drawInterior(withFrame: cellFrame, in: controlView)
  34             return
  35         }
  36         guard let font = attribute[NSFontAttributeName] as? NSFont else { return }
  37
  38         let textStorage = NSTextStorage(string: attributedString.string, attributes: attribute)
  39         textStorage.addLayoutManager(layoutManager)
  40         let range = layoutManager.glyphRange(for: textContainer)
  41         let glyph = UnsafeMutablePointer<CGGlyph>.allocate(capacity: range.length)
  42         let glyphLength = layoutManager.getGlyphs(in: range, glyphs: glyph, properties: nil, characterIndexes: nil, bidiLevels: nil)
  43         var point = NSPoint(x: StrokeTextFieldCell.boarderWidth, y: 0)
  44         point.y -= font.descender
  45         if controlView.isFlipped {
  46             point.y -= NSHeight(controlView.frame)
  47         }
  48         let nsGlyph = UnsafeMutablePointer<NSGlyph>.allocate(capacity: range.length)
  49         for i in 0...range.length {
  50             nsGlyph[i] = NSGlyph(glyph[i])
  51         }
  52
  53         let path = NSBezierPath()
  54         path.move(to: point)
  55         path.appendGlyphs(nsGlyph, count: glyphLength, in: font)
  56         path.lineWidth = StrokeTextFieldCell.boarderWidth
  57         path.lineJoinStyle = .roundLineJoinStyle
  58         if controlView.isFlipped {
  59             var affineTransform = AffineTransform()
  60             affineTransform.scale(x: 1, y: -1)
  61             path.transform(using: affineTransform)
  62         }
  63
  64         NSColor.black.set()
  65         path.stroke()
  66         forgroundColor.set()
  67         path.fill()
  68
  69         textStorage.removeLayoutManager(layoutManager)
  70     }
  71 }