ashton's Introduction

Ashton

Converts NSAttributedStrings between AppKit, CoreText, UIKit and HTML.

What crazy name is that?

Not crazy at all: AttributedStringHTMLTransformation.

What does it actually do?

Ashton has two parts

a) It can convert the attributes of a AppKit, CoreText or UIKit NSAttributedString to and from an intermediate cross-platform Ashton-specific representation. This allows us to convert e.g. AppKit -> Ashton intermediate -> CoreText.

b) It can convert between a NSAttributedString with intermediate attributes and HTML. This allows us to transfer a NSAttributedString between Mac and iOS.

AppKit Input	Intermediate	AppKit Output
`NSParagraphStyleAttributeName` with `textAlign`	@"paragraph": @{ @"textAlignment":@"left\|right\|center" }	`NSParagraphStyleAttributeName` with `textAlign`
`NSFontAttributeName`	@"font": @{ @"traitBold":@YES, @"traitItalic":@NO, @"features":@[@[@5, @1], @[@14, @1]], @"pointSize":@12, @"familyName":@"Helvetica" }	`NSFontAttributeName`
`NSSuperscriptAttributeName` with values `1` or `-1`	`@"verticalAlign": @"super\|sub"`	`NSSuperscriptAttributeName`
`NSUnderlineColorAttributeName`	`@"underlineColor": @[@255, @0, @0, @1.0]`	`NSUnderlineColorAttributeName`
`NSStrikethroughStyleAttributeName`	`@"strikethrough": @"single\|thick\|double"`	`NSStrikethroughStyleAttributeName`
`NSStrikethroughColorAttributeName`	`@"strikethroughColor": @[@255, @0, @0, @1.0]`	`NSStrikethroughColorAttributeName`
`NSForegroundColorAttributeName`	`@"color": @[@255, @0, @0, @1.0]`	`NSForegroundColorAttributeName`
`NSStrokeColorAttributeName`	`@"color": @[@255, @0, @0, @1.0]`	`NSForegroundColorAttributeName`
`NSLinkAttributeName`	`@"link": @"http://google.com/"`	`NSLinkAttributeName`

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