General description

Description

This window is designed for use by a more complex GUI responsible for displaying an image. It takes an array of data, which it plots as a histogram, and allows the user to drag a region of the histogram, which the widget then fires as an event. Once the user has selected a region, they can resize or move the region. The widget has functions to allow the external chaging of a selection, and also the supply of different histogram data.

The controlling GUI is responsible for recalculating the histogram data etc when required and also actually setting the selection it receives from the histogramgui window.

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