Revert "fix alpha calculation"
Revert "fix alpha calculation"

This reverts commit 204efb6a1723f98ff53a61ed249dbff8cb391bb3.

Change-Id: I1756c399adbf0dd3371e8aab1d8021931203c49e

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core