You will find a similar "connected lines to inputs and outputs" interface in Quartz Composer. I don't think Apple has provided source code for either approach, but it is not that hard.
One of my company's products contained a similar interface in NeXTstep (proto-Cocoa) in ~1996. We collaborated with some contract engineers who adapted a famous circuit board layout algorithm to our purposes so that connection lines would automatically reroute to preserve 90 deg. angles and minimize crossing lines as the "boxes" containing inputs and outputs are dragged around. Apple still hasn't caught up to our implementation ;) You can start from Apple's Sketch sample application source code for inspiration creating the graphics that can be dragged. Our application used NSCell subclasses to represent the inputs and outputs and host connection lines. For another example, there is a simple drawing application from "Cocoa Design Patterns" available freely in CocoaDesignPatternsSampleCode.zip at http://www.cocoadesignpatterns.com/sample-code/ See Ch29. It would be fun and interesting to add connection lines between the boxes in the Ch29 example. _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
