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@SimianLogic

SimianLogic/DAMultilineLabelNode.swift

Last active February 16, 2016 18:01
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  1. SimianLogic revised this gist Sep 11, 2015. 1 changed file with 5 additions and 1 deletion.
    6 changes: 5 additions & 1 deletion DAMultilineLabelNode.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -5,6 +5,10 @@
    //
    // Ported from https://github.com/downrightsimple/DSMultilineLabelNode
    // an Obj-C version of the same thing
    //
    //
    // Main quirk is that you must add it to the scene for it to grab the scene bounds
    // before you set any of the text properties.

    import Foundation
    import SpriteKit
    @@ -83,7 +87,7 @@ class DAMultilineLabelNode : SKSpriteNode
    _paragraphWidth = scene!.size.width
    }

    let texture_size = CGSize(width: _paragraphWidth, height: 2048)//scene!.size.height)
    let texture_size = CGSize(width: _paragraphWidth, height: scene!.size.height)
    var texture_rect = (text as NSString).boundingRectWithSize(texture_size,
    options: NSStringDrawingOptions.UsesLineFragmentOrigin,
    attributes: text_attributes as [NSObject:AnyObject],
  2. SimianLogic created this gist Sep 11, 2015.
    219 changes: 219 additions & 0 deletions DAMultilineLabelNode.swift
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,219 @@
    //
    // DAMultilineLabelNode.swift
    //
    // Created by Will Hankinson on 9/10/15.
    //
    // Ported from https://github.com/downrightsimple/DSMultilineLabelNode
    // an Obj-C version of the same thing

    import Foundation
    import SpriteKit

    class DAMultilineLabelNode : SKSpriteNode
    {
    private var _text = ""
    private var _fontColor = SKColor.whiteColor()
    private var _fontName = "Helvetica"
    private var _fontSize = CGFloat(32)
    private var _horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Center
    private var _verticalAlignmentMode = SKLabelVerticalAlignmentMode.Baseline

    private var _paragraphWidth = CGFloat(0)

    init()
    {
    super.init(texture: nil, color: UIColor.greenColor(), size: CGSize(width: 0, height: 0))

    retexture()
    }

    convenience init(fontName:String)
    {
    self.init()

    self.fontName = fontName
    }

    static func labelNodeWithFontNamed(fontName:String) -> DAMultilineLabelNode
    {
    return DAMultilineLabelNode(fontName: fontName)
    }

    required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
    }

    func retexture()
    {
    if let new_text_image = imageFromText(_text)
    {
    var new_texture = SKTexture(image: new_text_image)

    texture = new_texture
    anchorPoint = CGPointMake(0.5, 0.5)
    }
    }

    func imageFromText(text:String) -> UIImage?
    {
    var paragraph_style = NSMutableParagraphStyle()
    paragraph_style.lineBreakMode = NSLineBreakMode.ByWordWrapping
    paragraph_style.alignment = horizontalNSTextAlignment
    paragraph_style.lineSpacing = 1

    var font = UIFont(name: _fontName, size: _fontSize)
    if (font == nil)
    {
    font = UIFont(name: "Helvetica", size: _fontSize)
    println("The font you specified was unavailable. Defaulted to Helvetica.");
    }

    var text_attributes = NSMutableDictionary()
    text_attributes.setObject(font!, forKey: NSFontAttributeName)
    text_attributes.setObject(paragraph_style, forKey: NSParagraphStyleAttributeName)
    text_attributes.setObject(_fontColor, forKey: NSForegroundColorAttributeName)

    if(scene == nil)
    {
    return nil
    }

    if(_paragraphWidth == 0)
    {
    _paragraphWidth = scene!.size.width
    }

    let texture_size = CGSize(width: _paragraphWidth, height: 2048)//scene!.size.height)
    var texture_rect = (text as NSString).boundingRectWithSize(texture_size,
    options: NSStringDrawingOptions.UsesLineFragmentOrigin,
    attributes: text_attributes as [NSObject:AnyObject],
    context: nil
    )

    //iOS7 uses fractional size values. So we needed to ceil it to make sure we have enough room for display.
    texture_rect.size = CGSize(width: ceil(texture_rect.size.width), height: ceil(texture_rect.size.height))

    if(texture_rect.size.width == 0 || texture_rect.size.height == 0)
    {
    return nil
    }

    size = texture_rect.size

    UIGraphicsBeginImageContextWithOptions(texture_rect.size, false, 0)
    (text as NSString).drawInRect(texture_rect, withAttributes: text_attributes as [NSObject : AnyObject])

    let image = UIGraphicsGetImageFromCurrentImageContext()

    UIGraphicsEndImageContext()

    return image
    }

    private var horizontalNSTextAlignment:NSTextAlignment
    {
    switch(_horizontalAlignmentMode)
    {
    case .Center:
    return NSTextAlignment.Center
    case .Left:
    return NSTextAlignment.Left
    case .Right:
    return NSTextAlignment.Right
    }
    }

    var fontColor:SKColor
    {
    get
    {
    return _fontColor
    }
    set(value)
    {
    _fontColor = value
    retexture()
    }
    }

    var fontName:String
    {
    get
    {
    return _fontName
    }
    set(value)
    {
    _fontName = value
    retexture()
    }
    }

    var fontSize:CGFloat
    {
    get
    {
    return _fontSize
    }
    set(value)
    {
    _fontSize = value
    retexture()
    }
    }

    var paragraphWidth:CGFloat
    {
    get
    {
    return _paragraphWidth
    }
    set(value)
    {
    _paragraphWidth = value
    retexture()
    }
    }

    var horizontalAlignmentMode:SKLabelHorizontalAlignmentMode
    {
    get
    {
    return _horizontalAlignmentMode
    }
    set(value)
    {
    _horizontalAlignmentMode = value
    retexture()
    }
    }

    var verticalAlignmentMode:SKLabelVerticalAlignmentMode
    {
    get
    {
    return _verticalAlignmentMode
    }
    set(value)
    {
    _verticalAlignmentMode = value
    retexture()
    }
    }

    var text:String
    {
    get
    {
    return _text
    }
    set(value)
    {
    _text = value
    retexture()
    }
    }



    }