showDefinition(for:range:options:baselineOriginProvider:)

Declaration

func showDefinition(for attrString: NSAttributedString?, range targetRange: NSRange, options: [NSView.DefinitionOptionKey : Any]? = nil, baselineOriginProvider originProvider: ((NSRange) -> NSPoint)? = nil)

Parameters

attrString

The attributed string for which to show the definition. If the view is an instance of NSTextView, the attrString value can be nil, in which case the text view will automatically supply values suitable for displaying definitions for the specified range within its text content.

range

The range of the attributed string to define. You can pass a zero-length range and the appropriate range will be auto-detected around the range's offset. That's the recommended approach when there is no selection.

options

An optional dictionary that specifies how the definition is displayed. See NSDefinition Presentation Constants for the key and it’s possible values.

originProvider

The originProvider block object should return the baseline origin for the first character at the adjusted range.

If the view is an instance of NSTextView, the originProvider can be NULL, in which case the text view will automatically supply values suitable for displaying definitions for the specified range within its text content.

The block object takes a single argument:

adjustedRange

The adjusted range.

The block object returns an NSPoint to be used as the baseline origin of the first character, in the view’s view coordinate system.

Discussion