A rectangle of whole device pixels: the column and row of its top-left pixel, and its size.
public PixelRectangle(int X, int Y, int Width, int Height)
The column of the leftmost pixel.
The row of the top pixel.
The number of pixels across.
The number of pixels down.
ISO 32000-2 §8.3.2.2: device space, where pixel boundaries fall on integer coordinates (§10.7.4); origin top-left, y down.