# Scrawl-canvas v8 - DOM test 016

## Determine the displayed shape of the visible stack; react to changes in the displayed shape

### This stack is resizable - drag the bottom right corner to change its dimensions.

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#### Test purpose

- Create a resizable Stack artefact containing an Element artefact
- Create hook functions for the Element that will be invoked as the Stack dimensions are changed
- Check that appropriate hooks are fired, and the Element updated, in response to changes in the Stack's dimensions - five states ('banner', 'landscape', 'rectangle', 'portrait', 'skyscraper') should be viewable as the Stack corner is dragged horizontally right (and up) and then diagonally down/left

Touch test: canvas should be resizable

Annotated code