├── Screenshot.gif ├── LNTextView.xcodeproj ├── project.xcworkspace │ └── contents.xcworkspacedata ├── xcshareddata │ └── xcschemes │ │ └── LNTextView.xcscheme └── project.pbxproj ├── LNTextView ├── LNTextView.h ├── Info.plist ├── LineHighlightingTextView.swift ├── LNTextView.swift └── LineNumberView.swift ├── Example ├── AppDelegate.swift ├── Info.plist ├── ViewController.swift ├── Assets.xcassets │ └── AppIcon.appiconset │ │ └── Contents.json └── Base.lproj │ └── Main.storyboard ├── LICENSE ├── README.md └── .gitignore /Screenshot.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/JonWorms/LNTextView/HEAD/Screenshot.gif -------------------------------------------------------------------------------- /LNTextView.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /LNTextView/LNTextView.h: -------------------------------------------------------------------------------- 1 | // 2 | // LNTextView.h 3 | // LNTextView 4 | // 5 | // Created by Jon Worms on 4/9/17. 6 | // 7 | // 8 | 9 | #import 10 | 11 | //! Project version number for LNTextView. 12 | FOUNDATION_EXPORT double LNTextViewVersionNumber; 13 | 14 | //! Project version string for LNTextView. 15 | FOUNDATION_EXPORT const unsigned char LNTextViewVersionString[]; 16 | 17 | // In this header, you should import all the public headers of your framework using statements like #import 18 | 19 | 20 | -------------------------------------------------------------------------------- /Example/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.swift 3 | // Example 4 | // 5 | // Created by Jon Worms on 4/9/17. 6 | // 7 | // 8 | 9 | import Cocoa 10 | 11 | @NSApplicationMain 12 | class AppDelegate: NSObject, NSApplicationDelegate { 13 | 14 | 15 | 16 | func applicationDidFinishLaunching(_ aNotification: Notification) { 17 | // Insert code here to initialize your application 18 | } 19 | 20 | func applicationWillTerminate(_ aNotification: Notification) { 21 | // Insert code here to tear down your application 22 | } 23 | 24 | 25 | } 26 | 27 | -------------------------------------------------------------------------------- /LNTextView/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | FMWK 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | $(CURRENT_PROJECT_VERSION) 21 | NSPrincipalClass 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /Example/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIconFile 10 | 11 | CFBundleIdentifier 12 | $(PRODUCT_BUNDLE_IDENTIFIER) 13 | CFBundleInfoDictionaryVersion 14 | 6.0 15 | CFBundleName 16 | $(PRODUCT_NAME) 17 | CFBundlePackageType 18 | APPL 19 | CFBundleShortVersionString 20 | 1.0 21 | CFBundleVersion 22 | 1 23 | LSMinimumSystemVersion 24 | $(MACOSX_DEPLOYMENT_TARGET) 25 | NSMainStoryboardFile 26 | Main 27 | NSPrincipalClass 28 | NSApplication 29 | 30 | 31 | -------------------------------------------------------------------------------- /Example/ViewController.swift: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.swift 3 | // Example 4 | // 5 | // Created by Jon Worms on 4/9/17. 6 | // 7 | // 8 | 9 | import Cocoa 10 | import LNTextView 11 | 12 | class ViewController: NSViewController { 13 | 14 | @IBOutlet var textView: LNTextView! 15 | 16 | override func viewDidLoad() { 17 | super.viewDidLoad() 18 | 19 | // Set a color theme: 20 | textView.textBackgroundColor = NSColor(calibratedRed: CGFloat(29.0/255.0), green: CGFloat(32.0/255.0), blue: CGFloat(35.0/255.0), alpha: 1) 21 | textView.lineNumbersBackgroundColor = NSColor(calibratedRed: CGFloat(54.0/255.0), green: CGFloat(56.0/255.0), blue: CGFloat(58.0/255.0), alpha: 1) 22 | textView.lineNumbersForegroundColor = NSColor.gray 23 | textView.selectionColor = NSColor(calibratedRed: 0.28, green: 0.30, blue: 0.32, alpha: 1) 24 | textView.currentLineColor = NSColor.white 25 | textView.textColor = NSColor.white 26 | // Do any additional setup after loading the view. 27 | } 28 | 29 | override var representedObject: Any? { 30 | didSet { 31 | // Update the view, if already loaded. 32 | } 33 | } 34 | 35 | 36 | } 37 | 38 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 Jon Worms 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /Example/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "mac", 5 | "size" : "16x16", 6 | "scale" : "1x" 7 | }, 8 | { 9 | "idiom" : "mac", 10 | "size" : "16x16", 11 | "scale" : "2x" 12 | }, 13 | { 14 | "idiom" : "mac", 15 | "size" : "32x32", 16 | "scale" : "1x" 17 | }, 18 | { 19 | "idiom" : "mac", 20 | "size" : "32x32", 21 | "scale" : "2x" 22 | }, 23 | { 24 | "idiom" : "mac", 25 | "size" : "128x128", 26 | "scale" : "1x" 27 | }, 28 | { 29 | "idiom" : "mac", 30 | "size" : "128x128", 31 | "scale" : "2x" 32 | }, 33 | { 34 | "idiom" : "mac", 35 | "size" : "256x256", 36 | "scale" : "1x" 37 | }, 38 | { 39 | "idiom" : "mac", 40 | "size" : "256x256", 41 | "scale" : "2x" 42 | }, 43 | { 44 | "idiom" : "mac", 45 | "size" : "512x512", 46 | "scale" : "1x" 47 | }, 48 | { 49 | "idiom" : "mac", 50 | "size" : "512x512", 51 | "scale" : "2x" 52 | } 53 | ], 54 | "info" : { 55 | "version" : 1, 56 | "author" : "xcode" 57 | } 58 | } -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | LNTextView 2 | =========== 3 | 4 | ![Screenshot](https://github.com/JonWorms/LNTextView/blob/master/Screenshot.gif?raw=true) 5 | ### Installing: 6 | You can either copy __LNTextView.swift__, __LineHighlightingTextView.swift__, and __LineNumberView.swift__ into your project, or you can build and embed the LNTextView framework into your project. A release will come soon, at which time you should be able to use [Carthage](https://github.com/Carthage/Carthage) as well. 7 | ### Example Usage: 8 | ###### With Storyboard: 9 | ```Swift 10 | // 11 | // ViewController.swift 12 | // Example 13 | // 14 | import Cocoa 15 | import LNTextView 16 | 17 | class ViewController: NSViewController { 18 | 19 | @IBOutlet var textView: LNTextView! 20 | 21 | override func viewDidLoad() { 22 | super.viewDidLoad() 23 | 24 | // Set a color theme: 25 | textView.textBackgroundColor = NSColor(calibratedRed: CGFloat(29.0/255.0), green: CGFloat(32.0/255.0), blue: CGFloat(35.0/255.0), alpha: 1) 26 | textView.lineNumbersBackgroundColor = NSColor(calibratedRed: CGFloat(54.0/255.0), green: CGFloat(56.0/255.0), blue: CGFloat(58.0/255.0), alpha: 1) 27 | textView.lineNumbersForegroundColor = NSColor.gray 28 | textView.selectionColor = NSColor(calibratedRed: 0.28, green: 0.30, blue: 0.32, alpha: 1) 29 | textView.currentLineColor = NSColor.white 30 | textView.textColor = NSColor.white 31 | // Do any additional setup after loading the view. 32 | } 33 | 34 | } 35 | ``` 36 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Xcode 2 | # 3 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 4 | 5 | ## Build generated 6 | build/ 7 | DerivedData/ 8 | 9 | ## Various settings 10 | *.pbxuser 11 | !default.pbxuser 12 | *.mode1v3 13 | !default.mode1v3 14 | *.mode2v3 15 | !default.mode2v3 16 | *.perspectivev3 17 | !default.perspectivev3 18 | xcuserdata/ 19 | 20 | ## Other 21 | *.moved-aside 22 | *.xcuserstate 23 | 24 | ## Obj-C/Swift specific 25 | *.hmap 26 | *.ipa 27 | *.dSYM.zip 28 | *.dSYM 29 | 30 | ## Playgrounds 31 | timeline.xctimeline 32 | playground.xcworkspace 33 | 34 | # Swift Package Manager 35 | # 36 | # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies. 37 | # Packages/ 38 | .build/ 39 | 40 | # CocoaPods 41 | # 42 | # We recommend against adding the Pods directory to your .gitignore. However 43 | # you should judge for yourself, the pros and cons are mentioned at: 44 | # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control 45 | # 46 | # Pods/ 47 | 48 | # Carthage 49 | # 50 | # Add this line if you want to avoid checking in source code from Carthage dependencies. 51 | # Carthage/Checkouts 52 | 53 | Carthage/Build 54 | 55 | # fastlane 56 | # 57 | # It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the 58 | # screenshots whenever they are needed. 59 | # For more information about the recommended setup visit: 60 | # https://github.com/fastlane/fastlane/blob/master/fastlane/docs/Gitignore.md 61 | 62 | fastlane/report.xml 63 | fastlane/Preview.html 64 | fastlane/screenshots 65 | fastlane/test_output 66 | -------------------------------------------------------------------------------- /LNTextView.xcodeproj/xcshareddata/xcschemes/LNTextView.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 34 | 35 | 45 | 46 | 52 | 53 | 54 | 55 | 56 | 57 | 63 | 64 | 70 | 71 | 72 | 73 | 75 | 76 | 79 | 80 | 81 | -------------------------------------------------------------------------------- /LNTextView/LineHighlightingTextView.swift: -------------------------------------------------------------------------------- 1 | // 2 | // LineHighlightingTextView.swift 3 | // 4 | // Copyright (c) 2017 Jon Worms 5 | // 6 | // Permission is hereby granted, free of charge, to any person obtaining a copy 7 | // of this software and associated documentation files (the "Software"), to deal 8 | // in the Software without restriction, including without limitation the rights 9 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 | // copies of the Software, and to permit persons to whom the Software is 11 | // furnished to do so, subject to the following conditions: 12 | // 13 | // The above copyright notice and this permission notice shall be included in all 14 | // copies or substantial portions of the Software. 15 | // 16 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 | // SOFTWARE. 23 | // 24 | 25 | import Cocoa 26 | //TODO: Find out what this is: kATSULineHighlightCGColorTag 27 | 28 | 29 | protocol LineHighlightingTextViewDelegate { 30 | func selectionNeedsDisplay() 31 | } 32 | 33 | 34 | public class LineHighlightingTextView: NSTextView { 35 | 36 | 37 | var highlightingDelegate: LineHighlightingTextViewDelegate? 38 | 39 | var currentLineColor: NSColor = NSColor(calibratedRed: 0.96, green: 0.96, blue: 0.97, alpha: 1) 40 | var selectionColor: NSColor { 41 | set { selectedTextAttributes[NSBackgroundColorAttributeName] = newValue } 42 | get { return selectedTextAttributes[NSBackgroundColorAttributeName] as! NSColor } 43 | } 44 | 45 | 46 | 47 | 48 | override init(frame frameRect: NSRect) { 49 | super.init(frame: frameRect) 50 | setup() 51 | } 52 | 53 | override init(frame frameRect: NSRect, textContainer container: NSTextContainer?) { 54 | super.init(frame: frameRect, textContainer: container) 55 | setup() 56 | } 57 | 58 | required public init?(coder: NSCoder) { 59 | fatalError("init(coder:) has not been implemented") 60 | } 61 | 62 | private func setup() { 63 | selectionColor = NSColor(calibratedRed: 0.69, green: 0.84, blue: 1.0, alpha: 1.0) 64 | } 65 | 66 | 67 | override public var drawsBackground: Bool { 68 | set {} // always return false, we'll draw the background 69 | get { return false } 70 | } 71 | 72 | 73 | var selectedLineRect: NSRect? { 74 | guard let layout = layoutManager, 75 | let container = textContainer, 76 | let text = textStorage else { return nil } 77 | 78 | if selectedRange().length > 0 { return nil } 79 | 80 | return layout.boundingRect(forGlyphRange: text.rangeOfLineAtLocation(selectedRange().location), in: container) 81 | } 82 | 83 | override public func draw(_ dirtyRect: NSRect) { 84 | guard let context = NSGraphicsContext.current()?.cgContext else { return } 85 | 86 | context.setFillColor(backgroundColor.cgColor) 87 | context.fill(dirtyRect) 88 | 89 | if let textRect = selectedLineRect { 90 | let lineRect = NSRect(x: 0, y: textRect.origin.y, width: dirtyRect.width, height: textRect.height) 91 | context.setFillColor(currentLineColor.cgColor) 92 | context.fill(lineRect) 93 | } 94 | 95 | super.draw(dirtyRect) 96 | 97 | } 98 | 99 | /* 100 | override func setSelectedRange(_ charRange: NSRange) { 101 | super.setSelectedRange(charRange) 102 | needsDisplay = true 103 | highlightingDelegate?.selectionNeedsDisplay() 104 | }*/ 105 | 106 | 107 | override public func setSelectedRange(_ charRange: NSRange, affinity: NSSelectionAffinity, stillSelecting stillSelectingFlag: Bool) { 108 | super.setSelectedRange(charRange, affinity: affinity, stillSelecting: stillSelectingFlag) 109 | needsDisplay = true 110 | highlightingDelegate?.selectionNeedsDisplay() 111 | } 112 | 113 | 114 | } 115 | 116 | 117 | 118 | 119 | 120 | extension UnicodeScalar { 121 | var isWhitespace: Bool { 122 | return NSCharacterSet.whitespaces.contains(self) || NSCharacterSet.newlines.contains(self) 123 | } 124 | 125 | var isNewline: Bool { 126 | return NSCharacterSet.newlines.contains(self) 127 | } 128 | } 129 | 130 | extension String.UnicodeScalarView { 131 | subscript(index: Int) -> UnicodeScalar { 132 | var i = self.startIndex 133 | self.formIndex(&i, offsetBy: index) 134 | return self[i] 135 | } 136 | } 137 | 138 | 139 | extension NSAttributedString { 140 | 141 | /// 142 | /// Returns an NSRange containing the argument location that starts after 143 | /// a newline (or the beginning of the string) and ends at a new line (or 144 | /// the end of the string) 145 | /// 146 | func rangeOfLineAtLocation(_ location: Int) -> NSRange { 147 | let scalars = string.unicodeScalars 148 | 149 | if scalars[location].isNewline { 150 | var start = location 151 | while(start > 0 && !scalars[start-1].isNewline) { 152 | start -= 1 153 | } 154 | return NSMakeRange(start, location-start) 155 | } 156 | 157 | var start: Int = location 158 | while(start > 0 && !scalars[start-1].isNewline) { 159 | start -= 1 160 | } 161 | 162 | var end = location 163 | while(end < scalars.count-1 && !scalars[end+1].isNewline) { 164 | end += 1 165 | } 166 | 167 | return NSMakeRange(start, end-start) 168 | } 169 | 170 | 171 | } 172 | -------------------------------------------------------------------------------- /LNTextView/LNTextView.swift: -------------------------------------------------------------------------------- 1 | // 2 | // LNTextView.swift 3 | // 4 | // Copyright (c) 2017 Jon Worms 5 | // 6 | // Permission is hereby granted, free of charge, to any person obtaining a copy 7 | // of this software and associated documentation files (the "Software"), to deal 8 | // in the Software without restriction, including without limitation the rights 9 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 | // copies of the Software, and to permit persons to whom the Software is 11 | // furnished to do so, subject to the following conditions: 12 | // 13 | // The above copyright notice and this permission notice shall be included in all 14 | // copies or substantial portions of the Software. 15 | // 16 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 | // SOFTWARE. 23 | // 24 | 25 | import Cocoa 26 | 27 | let testColors: [NSColor] = [.yellow, .blue, .red, .orange, .green, .purple] 28 | 29 | 30 | public class LNTextView: NSView, NSTextStorageDelegate, NSTextViewDelegate, LineHighlightingTextViewDelegate { 31 | 32 | 33 | // MARK: Colors 34 | public var textBackgroundColor: NSColor { 35 | set { _textView.backgroundColor = newValue } 36 | get { return _textView.backgroundColor } 37 | } 38 | 39 | public var lineNumbersBackgroundColor: NSColor { 40 | set { _lineNumbers.backgroundColor = newValue } 41 | get { return _lineNumbers.backgroundColor } 42 | } 43 | 44 | public var lineNumbersForegroundColor: NSColor { 45 | set { _lineNumbers.foregroundColor = newValue } 46 | get { return _lineNumbers.foregroundColor } 47 | } 48 | 49 | public var currentLineColor: NSColor { 50 | set { 51 | _lineNumbers.selectionColor = newValue 52 | _textView.currentLineColor = newValue.withAlphaComponent(0.1) 53 | } 54 | get { return _lineNumbers.selectionColor } 55 | } 56 | 57 | public var selectionColor: NSColor { 58 | set { _textView.selectedTextAttributes[NSBackgroundColorAttributeName] = newValue } 59 | get { return _textView.selectedTextAttributes[NSBackgroundColorAttributeName] as! NSColor } 60 | } 61 | 62 | public var textColor: NSColor { 63 | set { 64 | _textView.textColor = newValue 65 | _textView.insertionPointColor = newValue 66 | } 67 | get { return _textView.textColor ?? NSColor.black } 68 | } 69 | 70 | public var font: NSFont? { 71 | set { _textView.font = newValue } 72 | get { return _textView.font } 73 | } 74 | 75 | 76 | 77 | public var selectedRanges: [NSValue] { return _textView.selectedRanges } 78 | 79 | 80 | private var _textView: LineHighlightingTextView! 81 | 82 | public var storageDelegate: NSTextStorageDelegate? 83 | 84 | 85 | private var _lineNumbers: LineNumberView! 86 | private var _scrollView: NSScrollView! 87 | private var _textStorage: NSTextStorage { return _textView.textStorage! } 88 | 89 | 90 | override init(frame frameRect: NSRect) { 91 | super.init(frame: frameRect) 92 | setup() 93 | } 94 | 95 | required public init?(coder: NSCoder) { 96 | super.init(coder: coder) 97 | setup() 98 | } 99 | 100 | private func setup() { 101 | 102 | _scrollView = NSScrollView(frame: self.bounds) 103 | 104 | _scrollView.hasVerticalScroller = true 105 | _scrollView.hasHorizontalScroller = false 106 | _scrollView.hasVerticalRuler = true 107 | _scrollView.rulersVisible = true 108 | 109 | _scrollView.borderType = .noBorder 110 | _scrollView.autoresizingMask = [.viewWidthSizable , .viewHeightSizable] 111 | 112 | 113 | _textView = LineHighlightingTextView(frame: NSRect(origin: NSZeroPoint, size: _scrollView.contentSize)) 114 | _textView.minSize = NSSize(width: 0, height: _scrollView.contentSize.height) 115 | _textView.maxSize = NSSize(width: CGFloat.greatestFiniteMagnitude,height: CGFloat.greatestFiniteMagnitude) 116 | _textView.isVerticallyResizable = true 117 | _textView.isHorizontallyResizable = false 118 | _textView.autoresizingMask = .viewWidthSizable 119 | _textView.textContainer?.containerSize = NSSize(width: _scrollView.contentSize.width, height: CGFloat.greatestFiniteMagnitude) 120 | _textView.textContainer?.widthTracksTextView = true 121 | _textView.highlightingDelegate = self 122 | 123 | _lineNumbers = LineNumberView(frame: NSRect(x: 0, y: 0, width: 50, height: 0)) 124 | _lineNumbers.scrollView = _scrollView 125 | _lineNumbers.orientation = .verticalRuler 126 | _lineNumbers.clientView = _textView 127 | 128 | 129 | _scrollView.verticalRulerView = _lineNumbers 130 | _scrollView.documentView = _textView 131 | 132 | 133 | _textStorage.delegate = self 134 | _textView.delegate = self 135 | 136 | addSubview(_scrollView) 137 | 138 | font = NSFont(name: "Menlo-Regular", size: 11) 139 | } 140 | 141 | 142 | 143 | public func textStorage(_ textStorage: NSTextStorage, willProcessEditing editedMask: NSTextStorageEditActions, range editedRange: NSRange, changeInLength delta: Int) { 144 | _lineNumbers.needsDisplay = true 145 | storageDelegate?.textStorage?(textStorage, willProcessEditing: editedMask, range: editedRange, changeInLength: delta) 146 | } 147 | 148 | 149 | 150 | public func textStorage(_ textStorage: NSTextStorage, didProcessEditing editedMask: NSTextStorageEditActions, range editedRange: NSRange, changeInLength delta: Int) { 151 | storageDelegate?.textStorage?(textStorage, didProcessEditing: editedMask, range: editedRange, changeInLength: delta) 152 | } 153 | 154 | 155 | override public func layout() { 156 | super.layout(); 157 | _lineNumbers.needsDisplay = true 158 | } 159 | 160 | func selectionNeedsDisplay() { 161 | _lineNumbers.needsDisplay = true 162 | } 163 | 164 | 165 | } 166 | 167 | 168 | 169 | 170 | 171 | 172 | 173 | 174 | 175 | -------------------------------------------------------------------------------- /LNTextView/LineNumberView.swift: -------------------------------------------------------------------------------- 1 | // 2 | // LineNumberView.swift 3 | // 4 | // Copyright (c) 2017 Jon Worms 5 | // 6 | // Permission is hereby granted, free of charge, to any person obtaining a copy 7 | // of this software and associated documentation files (the "Software"), to deal 8 | // in the Software without restriction, including without limitation the rights 9 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 | // copies of the Software, and to permit persons to whom the Software is 11 | // furnished to do so, subject to the following conditions: 12 | // 13 | // The above copyright notice and this permission notice shall be included in all 14 | // copies or substantial portions of the Software. 15 | // 16 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 | // SOFTWARE. 23 | // 24 | 25 | import Cocoa 26 | 27 | 28 | public class LineNumberView: NSRulerView { 29 | 30 | 31 | private var fontAttributes: [String: AnyObject] = [:] 32 | 33 | 34 | // MARK: Colors 35 | var backgroundColor: NSColor = NSColor(calibratedRed: 0.97, green: 0.97, blue: 0.97, alpha: 1.0) 36 | var foregroundColor: NSColor { 37 | set { fontAttributes[NSForegroundColorAttributeName] = newValue } 38 | get { return fontAttributes[NSForegroundColorAttributeName] as! NSColor } 39 | } 40 | var selectionColor: NSColor = NSColor.black 41 | 42 | 43 | 44 | 45 | required override public init(scrollView: NSScrollView?, orientation: NSRulerOrientation) { 46 | super.init(scrollView: scrollView, orientation: orientation) 47 | let lineNumberStyle = NSMutableParagraphStyle() 48 | lineNumberStyle.alignment = .right 49 | 50 | fontAttributes[NSParagraphStyleAttributeName] = lineNumberStyle 51 | fontAttributes[NSBackgroundColorAttributeName] = NSColor.clear 52 | foregroundColor = NSColor(calibratedRed: 0.65, green: 0.65, blue: 0.65, alpha: 1.0) 53 | } 54 | 55 | required public init(coder: NSCoder) { 56 | fatalError("init(coder:) has not been implemented") 57 | } 58 | 59 | 60 | 61 | 62 | 63 | override public var isFlipped: Bool { return true } 64 | 65 | 66 | override public func draw(_ dirtyRect: NSRect) { 67 | guard let context: CGContext = NSGraphicsContext.current()?.cgContext else { return } 68 | 69 | // fill the background 70 | context.setFillColor(backgroundColor.cgColor) 71 | context.fill(dirtyRect) 72 | 73 | // draw a border on the right 74 | context.setStrokeColor(foregroundColor.cgColor) 75 | context.setLineWidth(0.5) 76 | context.move(to: CGPoint(x: dirtyRect.width, y: 0)) 77 | context.addLine(to: CGPoint(x: dirtyRect.width, y: dirtyRect.height)) 78 | context.strokePath() 79 | 80 | // this usually gets called on super.draw(dirtyRect), but we're not calling it 81 | drawHashMarksAndLabels(in: dirtyRect) 82 | } 83 | 84 | 85 | 86 | 87 | override public func drawHashMarksAndLabels(in rect: NSRect) { 88 | 89 | guard let textView: LineHighlightingTextView = self.clientView as? LineHighlightingTextView, 90 | let textContainer: NSTextContainer = textView.textContainer, 91 | let textStorage: NSTextStorage = textView.textStorage, 92 | let layout: NSLayoutManager = textView.layoutManager, 93 | let context: CGContext = NSGraphicsContext.current()?.cgContext else { 94 | return 95 | } 96 | 97 | 98 | 99 | // scalar values for text view content 100 | let scalars = textStorage.string.unicodeScalars 101 | 102 | // range of glyphs in the visible area of the text view 103 | let visibleGlyphRange = layout.glyphRange(forBoundingRect: textView.visibleRect, in: textContainer) 104 | let selectedLinePosition: CGFloat = textView.selectedLineRect?.origin.y ?? -1 105 | 106 | var lineNumber: Int = 1 107 | // count newlines in range up to the visible range 108 | for i in 0..= fontBaselineOffset { 122 | fontBaselineOffset = ceil(fontBaselineOffset) 123 | } else { 124 | fontBaselineOffset = floor(fontBaselineOffset) 125 | } 126 | let lineOffset = layout.defaultBaselineOffset(for: font) - fontBaselineOffset 127 | // NOTE: ^ above is close, but needs work 128 | 129 | 130 | // translate vertically to line up with document position and baseline offset 131 | context.translateBy(x: 0, y: convert(NSZeroPoint, from: textView).y + lineOffset) 132 | 133 | 134 | 135 | // Begin drawing line numbers: 136 | 137 | // y-position of the last line 138 | var lastLinePosition: CGFloat = 0 139 | 140 | 141 | // range of each line as we step through the visible Range, starting at the start of the visible range 142 | var lineStart = visibleGlyphRange.location 143 | var lineLength = 0 144 | 145 | 146 | for i in visibleGlyphRange.location.. 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | 170 | 171 | 172 | 173 | 174 | 175 | 176 | 177 | 178 | 179 | 180 | 181 | 182 | 183 | 184 | 185 | 186 | 187 | 188 | 189 | 190 | 191 | 192 | 193 | 194 | 195 | 196 | 197 | 198 | 199 | 200 | 201 | 202 | 203 | 204 | 205 | 206 | 207 | 208 | 209 | 210 | 211 | 212 | 213 | 214 | 215 | 216 | 217 | 218 | 219 | 220 | 221 | 222 | 223 | 224 | 225 | 226 | 227 | 228 | 229 | 230 | 231 | 232 | 233 | 234 | 235 | 236 | 237 | 238 | 239 | 240 | 241 | 242 | 243 | 244 | 245 | 246 | 247 | 248 | 249 | 250 | 251 | 252 | 253 | 254 | 255 | 256 | 257 | 258 | 259 | 260 | 261 | 262 | 263 | 264 | 265 | 266 | 267 | 268 | 269 | 270 | 271 | 272 | 273 | 274 | 275 | 276 | 277 | 278 | 279 | 280 | 281 | 282 | 283 | 284 | 285 | 286 | 287 | 288 | 289 | 290 | 291 | 292 | 293 | 294 | 295 | 296 | 297 | 298 | 299 | 300 | 301 | 302 | 303 | 304 | 305 | 306 | 307 | 308 | 309 | 310 | 311 | 312 | 313 | 314 | 315 | 316 | 317 | 318 | 319 | 320 | 321 | 322 | 323 | 324 | 325 | 326 | 327 | 328 | 329 | 330 | 331 | 332 | 333 | 334 | 335 | 336 | 337 | 338 | 339 | 340 | 341 | 342 | 343 | 344 | 345 | 346 | 347 | 348 | 349 | 350 | 351 | 352 | 353 | 354 | 355 | 356 | 357 | 358 | 359 | 360 | 361 | 362 | 363 | 364 | 365 | 366 | 367 | 368 | 369 | 370 | 371 | 372 | 373 | 374 | 375 | 376 | 377 | 378 | 379 | 380 | 381 | 382 | 383 | 384 | 385 | 386 | 387 | 388 | 389 | 390 | 391 | 392 | 393 | 394 | 395 | 396 | 397 | 398 | 399 | 400 | 401 | 402 | 403 | 404 | 405 | 406 | 407 | 408 | 409 | 410 | 411 | 412 | 413 | 414 | 415 | 416 | 417 | 418 | 419 | 420 | 421 | 422 | 423 | 424 | 425 | 426 | 427 | 428 | 429 | 430 | 431 | 432 | 433 | 434 | 435 | 436 | 437 | 438 | 439 | 440 | 441 | 442 | 443 | 444 | 445 | 446 | 447 | 448 | 449 | 450 | 451 | 452 | 453 | 454 | 455 | 456 | 457 | 458 | 459 | 460 | 461 | 462 | 463 | 464 | 465 | 466 | 467 | 468 | 469 | 470 | 471 | 472 | 473 | 474 | 475 | 476 | 477 | 478 | 479 | 480 | 481 | 482 | 483 | 484 | 485 | 486 | 487 | 488 | 489 | 490 | 491 | 492 | 493 | 494 | 495 | 496 | 497 | 498 | 499 | 500 | 501 | 502 | 503 | 504 | 505 | 506 | 507 | 508 | 509 | 510 | Default 511 | 512 | 513 | 514 | 515 | 516 | 517 | Left to Right 518 | 519 | 520 | 521 | 522 | 523 | 524 | Right to Left 525 | 526 | 527 | 528 | 529 | 530 | 531 | 532 | 533 | 534 | 535 | Default 536 | 537 | 538 | 539 | 540 | 541 | 542 | Left to Right 543 | 544 | 545 | 546 | 547 | 548 | 549 | Right to Left 550 | 551 | 552 | 553 | 554 | 555 | 556 | 557 | 558 | 559 | 560 | 561 | 562 | 563 | 564 | 565 | 566 | 567 | 568 | 569 | 570 | 571 | 572 | 573 | 574 | 575 | 576 | 577 | 578 | 579 | 580 | 581 | 582 | 583 | 584 | 585 | 586 | 587 | 588 | 589 | 590 | 591 | 592 | 593 | 594 | 595 | 596 | 597 | 598 | 599 | 600 | 601 | 602 | 603 | 604 | 605 | 606 | 607 | 608 | 609 | 610 | 611 | 612 | 613 | 614 | 615 | 616 | 617 | 618 | 619 | 620 | 621 | 622 | 623 | 624 | 625 | 626 | 627 | 628 | 629 | 630 | 631 | 632 | 633 | 634 | 635 | 636 | 637 | 638 | 639 | 640 | 641 | 642 | 643 | 644 | 645 | 646 | 647 | 648 | 649 | 650 | 651 | 652 | 653 | 654 | 655 | 656 | 657 | 658 | 659 | 660 | 661 | 662 | 663 | 664 | 665 | 666 | 667 | 668 | 669 | 670 | 671 | 672 | 673 | 674 | 675 | 676 | 677 | 678 | 679 | 680 | 681 | 682 | 683 | 684 | 685 | 686 | 687 | 688 | 689 | 690 | 691 | 692 | 693 | 694 | 695 | 696 | 697 | 698 | 699 | --------------------------------------------------------------------------------