311233 - Pages that contain PNG images with alpha transparencies, print full image, not including transparency

Status: RESOLVED DUPLICATE of bug 235097

(Firefox :: File Handling, defect)

Description

[Joe Bednarz]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

If I have a page that contains a PNG with alpha transparency, printing this
page, will render the image on the printed page as the original image, not an
image has a transparency.  This is especially annoying when the image lays over
text, because on the printed page, the text is no longer visible.  Otherwise,
PNG support looks awesome.  Good job.

Reproducible: Always

Steps to Reproduce:
1.  Create PNG with alpha transparency... ideally with lots of black area --
make black are the transparent portion
2.  Create HTML page with PNG in an <IMG> tag
3.  Print page.

Actual Results:  
Display of page is fine with alpha transparency.  Printed image does not
resemble displayed page

Expected Results:  
Printed page as displayed.

Comment 1

[Joe Bednarz]

Attachment: Contains sample page and alpha transparency graphic

Display page, then try to print.  Image should be transparent when printed...

Comment 2

[Elmar Ludwig]

*** This bug has been marked as a duplicate of 235097 ***