josch/img2pdf
3
6
Fork 10
Code Issues 22 Pull requests 5 Projects Releases 3 Wiki Activity

Convert 8-bit PNG & GIF alpha channels to /SMasks in PDF #106

Merged
josch merged 7 commits from tzahola/img2pdf:png-alpha-to-smask into main 2021-08-22 08:08:26 +00:00
Conversation 21 Commits 7 Files changed 2 +2
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files
Showing only changes of commit cfbb40b0f6 - Show all commits

2
src/img2pdf.py
View file

@ -858,6 +858,8 @@ class pdfdoc(object):
image[PdfName.ColorSpace] = colorspace
image[PdfName.BitsPerComponent] = depth
smask = None
if color == Colorspace["CMYK;I"]:
# Inverts all four channels
image[PdfName.Decode] = [1, 0, 1, 0, 1, 0, 1, 0]