Method cellToRect

Computes a bounding rectangle for a range of cells @param cellX X coordinate of upper left corner expressed as a cell position @param cellY Y coordinate of upper left corner expressed as a cell position @param cellHSpan Width in cells @param cellVSpan Height in cells @param resultRect Rect into whi

(int cellX, int cellY, int cellHSpan, int cellVSpan, Rect resultRect)