usecanvas / canvastext Goto Github PK

I am trying to build the example app. In the final version of the code, it appears to need an object implementing the Theme protocol but the example app appears to not have been updated to include an example implementation.

Any chance you might be able to provide a basic implementation? I fear that I will make a mistake in that and it will drag down exploring the use of CanvasText.

Thanks in advance,

Charlie

I am trying to update this to build on Swift 3.1.

In the LayoutManager, I see the following code:

	var unfoldedRange: NSRange? {
		didSet {
			let wasFolding = oldValue.flatMap { foldedIndices.subtract($0.indices) } ?? foldedIndices
			let nowFolding = unfoldedRange.flatMap { foldedIndices.subtract($0.indices) } ?? foldedIndices
			let updated = nowFolding.exclusiveOr(wasFolding)

			if updated.isEmpty {
				return
			}

			NSRange.ranges(indices: updated).forEach { range in
				invalidateGlyphsForCharacterRange(range, changeInLength: 0, actualCharacterRange: nil)
			}

			needsUpdateTextContainer = true
		}
	}

But NSRange does not seem to support flatMap, so this is no longer compiling. I am having a difficult time trying to understand the logic here. Any suggestions on how to 'modernize' this code is appreciated.