[OpenJDK 2D-Dev] [9] RFR 8170352: The collate option is not checked

Phil Race philip.race at oracle.com
Wed Dec 14 21:20:59 UTC 2016

On 12/14/2016 01:40 AM, Prasanta Sadhukhan wrote:
> Hi Phil,
> On 12/14/2016 1:40 AM, Phil Race wrote:
>> Hi,
>> Thanks for checking that.
>> The bit I don't like here is that the end-user can then no longer ask 
>> for collation
>> at all on Linux even though it has some chance of working on some 
>> versions.
> This is the case even without my change and collate option is disabled 
> for PrinterJob.
> My fix (?) makes it disabled for PrintJob too.

Ah yes.
>> Hmm ..
>> http://stackoverflow.com/questions/31056278/postscript-file-is-not-collating-when-cups-copies-is-set
>> ---
>> In our cups class we were doing a cupsAddOption("copies", "2",.. and 
>> cupsAddOption("Collate", "True", .. commands (see examples below). It 
>> turns out the the cups "copies" command was killing the Collating if 
>> it set to 2. Like the orientation postscript/cups conflict you need 
>> to set the cups copies value to 1 to get the collation to work. The 
>> postscript file already knows its going to print out, for example 2 
>> copies.
>> ---
>> We set NumCopies in the Postscript along with collate :-
>>             mPSStream.print(isCollated() ? " /Collate true":"");
>>             mPSStream.print(" /NumCopies " +getCopiesInt());
>> So when we exec we also do "lp -# 2 .. " or whatever do set copies.
> We are setting copies to 1 in 
> http://hg.openjdk.java.net/jdk9/client/jdk/file/dc658d7dde90/src/java.desktop/share/classes/sun/print/PSPrinterJob.java#l735.


> One thing is that, in my testing in ubuntu14.04 "collation" is working 
> and "uncollation" is not working. When I print 2 copies and do not 
> select "collate" option in printer dialog [I enabled collate option by 
> commenting out the isLinux check from 
> http://hg.openjdk.java.net/jdk9/client/jdk/file/a21bac70753d/src/java.desktop/unix/classes/sun/print/IPPPrintService.java#l1062] 
> then, it prints Page 0, Page 1, Page 0, Page 1 [same as, when I 
> checked "collate" option] in my Ricoh printer in double-sided print. I 
> think for uncollation, it should print Page 0, Page 0 back-to-back in 
> 1 copy and Page1-Page1 in another copy, right?

Yes, uncollated should be as you say.
What is going on ??? Is this for PrinterJob or PrintJob or both ?
I need to configure a printer on my Ubuntu .. I lost them recently when 
my hard drive went bad.


> Regards
> Prasanta
>> Does it help if we stop doing that  for the collated case ?
>> -phil.
>> On 12/10/2016 12:19 AM, Prasanta Sadhukhan wrote:
>>> On 12/10/2016 4:58 AM, Phil Race wrote:
>>>> Regarding being hard-coded for "Selection", the point there is that 
>>>> in the AWT code path we always generate Postscript, whereas in the 
>>>> 2D path we may send some other content. Since we generate 
>>>> Postscript my instinct here is that Collate should always work 
>>>> since that gets embedded in the Postscript. The CUPS filter should 
>>>> then do whatever is necessary to generate the right number of 
>>>> collated or uncollated copies for the printer. I tracked down the 
>>>> changeset that has the code you reference 
>>>> http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/dead66347eca If you 
>>>> read the bug report for that : 
>>>> https://bugs.openjdk.java.net/browse/JDK-8016737 then it becomes 
>>>> clear (sort of) that this was a workaround for the oddity that 
>>>> Collate worked on Ubuntu 12.04 but not on Ubuntu 13.04, so the idea 
>>>> was to stop saying it was supported. That is very annoying of 
>>>> course and I'd love to know if we've rechecked from the source that 
>>>> "CUPS does not report collate as a supported attribute"
>>> I checked getAttMap (response received from cups)
>>> http://hg.openjdk.java.net/jdk9/client/jdk/file/dc658d7dde90/src/java.desktop/unix/classes/sun/print/IPPPrintService.java#l1767
>>> and there is no "collate-supported" attribute in there.
>>>> It is mentioned in CUPS docs. 
>>>> https://opensource.apple.com/source/cups/cups-62/doc/spm.shtml?txt#CONSTANTS 
>>>> Also the fix you are proposing doesn't seem to change anything that 
>>>> will help the test. It expects Collate to be checked. Doesn't it ?
>>> The fix does not directly help the test. The idea is to have the 
>>> test call first isAttributeCategorySupprted(SheetCollate.class) and 
>>> only execute the test if it is supported. It is mentioned inthe bug 
>>> report.
>>> Since, now our code returns false for SheetCollate attribute, my fix 
>>> will disable the collate option to prevent anomaly of returning 
>>> false for support but enabling the collate option.
>>> Regards
>>> Prasanta
>>>> -phil.
>>>> On 12/09/2016 12:22 AM, Prasanta Sadhukhan wrote:
>>>>> Hi All,
>>>>> In continuation with the below mail, the issue is "collate" option 
>>>>> is not checked for linux.
>>>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8170352
>>>>> webrev: http://cr.openjdk.java.net/~psadhukhan/8170352/webrev.00/
>>>>> Proposed fix is to disable collate option for linux in printer dialog.
>>>>> Regards
>>>>> Prasanta
>>>>> On 12/8/2016 4:23 PM, Prasanta Sadhukhan wrote:
>>>>>> Hi Phil,
>>>>>> I was investigating JDK-8170352: The collate option is not 
>>>>>> checked and I found that CUPS does not report collate as 
>>>>>> supported attribute.
>>>>>> It is removed from printRequestAttrib 
>>>>>> [http://hg.openjdk.java.net/jdk9/client/jdk/file/a21bac70753d/src/java.desktop/unix/classes/sun/print/IPPPrintService.java#l167]
>>>>>> so we do not look for collate-supported attribute in CUPS. 
>>>>>> Infact, getAttMap does not have any "collate-supported" attribute 
>>>>>> too!!
>>>>>> Also, this code 
>>>>>> [http://hg.openjdk.java.net/jdk9/client/jdk/file/a21bac70753d/src/java.desktop/unix/classes/sun/print/IPPPrintService.java#l1062] 
>>>>>> has been added [for 8016737]
>>>>>> to remove SheetCollate from supported attributes.
>>>>>> In light of this, I think we should disabled collate option from 
>>>>>> our print dialog even for Toolkit based PrintJob. It seems, from 
>>>>>> this code
>>>>>> http://hg.openjdk.java.net/jdk9/client/jdk/file/a21bac70753d/src/java.desktop/share/classes/sun/print/ServiceDialog.java#l1251
>>>>>> it is enabled if we specify in testcase
>>>>>> /job.setDefaultSelection(JobAttributes.DefaultSelectionType.SELECTION); 
>>>>>> /in which case isAWT set to true.
>>>>>> even though selection is determined by attribute support 
>>>>>> [http://hg.openjdk.java.net/jdk9/client/jdk/file/a21bac70753d/src/java.desktop/share/classes/sun/print/ServiceDialog.java#l1320]
>>>>>> I could not find why it is hardcoded to setEnabled(true) for 
>>>>>> "Selection". Do you know? mercurial history shows that line from 
>>>>>> jdk7 and I could not find previous history.
>>>>>>  I think there also, we should check for "scSupported" to enable 
>>>>>> sheetcollate? Anyways, "Selection" option is not there in linux.
>>>>>> Please let me know your views.
>>>>>> Regards
>>>>>> Prasanta

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