Planning a photo sharing application

When it opens, LightWork will present a vintage photograph and toolbar containing a few items. The following screenshot shows it all:

This bucolic image is an early color photograph, shot in 1902 by Adolf Miethe, a German photographer, professor, and inventor. The photo almost looks like a painting due to its coarse grain and pastel colors. However, it is a true example of a color photographic process. Miethe captured a scene on three photographic plates behind three different filters: red, green, and blue. Then, to recreate a multicolored image, he superimposed the three images using a projection process with different colors of light or a printing process with different dyes. Similar techniques are still in use today in our digital sensors, monitors, and printers.

LightWork will also be capable of displaying a live preview from a camera. However, for our purposes, a static (still) image is also a useful preview. A static image (unlike a camera preview...