171776 – Printing across multiple pages creates incorrect output when advanced graphics (antialiasing) is used

Bug 171776 - Printing across multiple pages creates incorrect output when advanced graphics (antialiasing) is used

Summary: Printing across multiple pages creates incorrect output when advanced graphic...

Status:	REOPENED

Alias:	None

Product:	Platform
Classification:	Eclipse Project
Component:	SWT (show other bugs)
Version:	3.2.1
Hardware:	PC Windows XP

Importance:	P3 normal with 1 vote (vote)
Target Milestone:	---
Assignee:	Silenio Quarti
QA Contact:

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2007-01-26 07:02 EST by Patrick
Modified:	2019-09-06 16:10 EDT (History)
CC List:	4 users (show)

See Also:

Attachments
expected output (antialiasing never set) (20.01 KB, application/pdf) 2007-01-26 07:04 EST, Patrick	no flags	Details
Wrong output (page 2) created when antialias has been enabled (20.20 KB, application/pdf) 2007-01-26 07:05 EST, Patrick	no flags	Details
tiled printing w/ aa (14.83 KB, application/pdf) 2007-07-29 10:23 EDT, Patrick	no flags	Details
tiled printing w/out AA (11.66 KB, application/pdf) 2007-07-29 10:23 EDT, Patrick	no flags	Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Patrick

2007-01-26 07:02:04 EST

Build ID: v3.2.1 / M20060921-0945

Steps To Reproduce:
1. enable antialiasing
2. create graph containing nodes with a dashed border
3. print graph using PrintGraphicalViewerOperation
4. when the output is tiled across multiple pages, some of the dashed lines on the second page appear as solid lines


More information:
This problem occurs with most printers, i.e. the Adope postscript printer drivers or PDFCreator 0.9.2. Microsoft Office Image Writer, on the other hand, produces the correct output.

I'm using the same widgest class in different places, and depending on the parent container the output differs. 

When removing all calls to .setAntialias() (i.e. not triggering the use of "advanced graphics") the correct output is produced in all cases.

I can try to produce a minimal test case for this. Example output is attached.

Comment 1 Patrick

2007-01-26 07:04:34 EST

Created attachment 57583 [details]
expected output (antialiasing never set)

Comment 2 Patrick

2007-01-26 07:05:35 EST

Created attachment 57584 [details]
Wrong output (page 2) created when antialias has been enabled

Comment 3 Pratik Shah

2007-01-29 15:14:00 EST

Please move to SWT.

Comment 4 Steve Northover

2007-01-29 18:11:06 EST

SSQ, is there anything special that Carolyn should be doing?

Comment 5 Silenio Quarti

2007-01-30 13:41:29 EST

I believe this is fixed in 3.3 already. Patrick could you try your steps with a newer 3.3 build?

Comment 6 Silenio Quarti

2007-02-21 13:08:27 EST

Please reopen if the problem still happens in 3.3.

Comment 7 Patrick

2007-07-29 10:21:34 EDT

I just tested this using Eclipse 3.3 (Build id: I20070621-1340) and the errors are still occurring. Again, after disabling AA the dashed lines are drawn properly on all pages.

I'm seeing some additional printing problems with transparent images, but I assume that's another bug :-)

Comment 8 Patrick

2007-07-29 10:23:19 EDT

Created attachment 74871 [details]
tiled printing w/ aa

Comment 9 Patrick

2007-07-29 10:23:42 EDT

Created attachment 74872 [details]
tiled printing w/out AA

Comment 10 Eclipse Webmaster

2019-09-06 16:10:29 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet.

If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.