79477 - Light color text can disappear on printouts

Status: VERIFIED FIXED

(Core :: Printing: Output, defect)

Description

[dcone (gone)]

When text uses a light color.. it does not show up when you print.  This happens 
if you have a background that is dark, but that background is not printed.

Comment 1

[dcone (gone)]

Attachment: Fix for this bug

Comment 2

[Kevin McCluskey (gone)]

Some minor nits;

I would suggest changing aPrinting to be aNoBackground, also add a comment to
TransformColor to explain why we transform the color to grey when there is no
background. (i.e white text on a white background would not show up unless we
transform the color.)

The assignment
newcolor = 0x00404040;    // a dark gray,

would be a little clearer if you use the NS_RGB macro to set the color instead.

You should also add a //XXX comment which includes a new bug number which covers
expanding transform color to take in to account color printers and print option
settings for controlling the display of the background. Transform color should
be passed a nsPresShell which it can query to get info as to whether the
background will be printed.


r=[e-mail]

Comment 3

[sujay]

can we add an example in the URL field? thanks.

Comment 4

[dcone (gone)]

Fixed.  Added a threshold to the textframe, so when we print without a 
background and the text is light..it will be darkened automatically.

Comment 5

[sujay]

Don, do you have a URL to an image you can include in this
bug report, so I can test it out? I ran across some images
that were printing out all dark, so I can try and find those
again...if you know of an image I can use, please do append..
thanks!

Comment 6

[dcone (gone)]

Attachment: small test case that illustrates the problem

Comment 7

[sujay]

Don, try printing image4 under ART4 at this URL:

http://10.4.101.11/syseng/browser

I get a dark printout for that image.

Is this the same problem as described in this bug report?

Comment 8

[dcone (gone)]

no, this is white text on a dark colored background.  Since we don't print the 
backgrounds.. the white will be printed on white, and the page is blank.  Now if 
white text is being printed.. it will be darkened to show up.

Comment 9

[sujay]

okay I will file separate bug on this new issue.

Comment 10

[sujay]

verified in 5/11 build.