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

Phil Race philip.race at oracle.com
Wed Dec 14 23:25:17 UTC 2016 

With a hacked JDK 9 (so that collate is not disabled) I can print either 
collated or un-collated.
This is on Ubuntu 16.04 with HP CP4525

testing this is a pain since the spooler hangs in "processing" after 
every job
and I need to kill the process and restart the printer.

That is not a JDK problem since (a) outside our scope and (b) same 
problem with libreoffice printing ..

But it makes me think that we should be looking at reverting 8016737 .. 
not extending it.

-phil.

On 12/14/2016 01:20 PM, Phil Race wrote:
>
>
> 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.
>
> OK.
>
>>
>> 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.
>
> -phil..
>
>>
>> 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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