tree bb40fa8ad88c5dfbf294750a5433ba6e08f1a02d
parent c58babd220a9dc4d13757be8799bffbd59cac73b
author Lei Zhang <thestig@chromium.org> 1579039996 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1579039996 +0000

Make CFX_DIBBase::IsAlphaMask() consistent with related functions.

Make IsAlphaMask(), which reads from |m_AlphaFlag|, consistent with
HasAlpha() and IsCmykImage(). This fulfills part of a TODO comment.

The other part of the TODO comment regarding IsOpaqueImage() is wrong,
so delete it. Along the way, reimplement IsOpaqueImage() using
IsAlphaMask() and HasAlpha().

Change-Id: I5bc5a363f94f6d9e3b64995d2cd103ab0ea24e53
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/65052
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>