Automatically arranging widgets of a model within a canvas using iterative region based widget relative adjustments

A widget adjustment event can be detected for a widget that is part of a model that is presented on a canvas of a user interface. On-canvas objects proximate to the widget can be adjusted. The on-canvas objects can include other widgets. The adjustments can be performed relative to a layout position of the widget after the widget adjustment event has occurred. Additional on-canvas objects further from the widget can the adjusted on-canvas objects can then be adjusted as necessary due to new positions of the adjusted on-canvas objects.