MahApps/MahApps.Metro — pull request #325 by lumberjack4 (2013-01-25 19:28:35+00:00)
Title: User Configurable MetroProgressBar EllipseDiameter

Allows the user to specify his own EllipseDiameter for the MetroProgressBar. If the user doesn't specify a size, the control will continue to use the default EllipseDiameter based on the control width.