Principle for Mac 3.0
Send events between component and parent
Principle for Mac 3.0 launched on July 28, 2017 with 325 votes, #51 of 2,972 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
Principle for Mac 3.0 is a design tool that enables communication between components and parent elements. Intended for designers and developers working on prototypes, it falls within the design tools and productivity category. The software facilitates the creation and testing of interactive prototypes by streamlining how different design elements interact with one another, making it useful for those building complex user interfaces and animation sequences.
written from the facts on this page · September 2026
From the sources
Principle 3 adds the ability to route events from a component to its parent, or from the parent into a component. You can even have one component trigger animations in another component. When creating an event, simply hover over a component or the "send to parent" button to send the event there. Learn more Drivers can now drive fill color, stroke color, and shadow color. Cool. Whew. There it is. This works how you expect, with two nice touches. First, the mouse cursor will have a lock icon beside it when hovering over a locked layer to remind you that clicking there may not select the layer you expect. Second, selecting a locked layer via the layer list allows editing it like normal; we…from principleformac.com
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