FB7551832: SwiftUI Color should have color manipulation methods that return a new Color

[sindresorhus]

• Date: 2020-01-26
• Resolution: Open
• Area: SwiftUI Framework
• OS: macOS 10.15.2
• Type: Suggestion

Description

Currently, there are many View methods that you can use on a Color. For example, .colorInvert(), .contrast(), .hueRotation(). The problem is that they return a some View instead of a new Color, so it's impossible to use them with methods that only accepts a Color.

It would be nice if there were Color-specific overloads of these methods that return a Color instead of a some View when used on a Color.

My specific use-case is that I want to invert Color.primary and use it in .stroke(), but .stroke() accepts a ShapeStyle (which Color conforms to, but View does not) and Color.primary.colorInvert() returns a some View.

This is what I would want:

Circle().strokeBorder(Color.primary.colorInvert().opacity(0.3), lineWidth: 0.5)