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IDProjectCategoryView StatusLast Update
0009178ScribusPDFpublic2010-06-20 22:01
Reportereclypse Assigned Tojghali  
PrioritynormalSeverityminorReproducibilityalways
Status closedResolutionfixed 
Platformx86OSlinuxOS VersionDebian Sid
Fixed in Version1.3.8svn 
Summary0009178: inconsistency between gradient display and pdf/svg export
DescriptionBad rendering in PDF file for nul gradients ; see explanation and screenshots.
Steps To Reproduce1/ create a frame and apply an horizontal gradient.
For the 1st frame, i used magenta and white.
point 1 -> 20% magenta
point 2 -> 20% white
point 3 -> 40% white
point 4 -> 40% magenta
point 5 -> 60% magenta
point 6 -> 60% white
point 7 -> 80% white
point 8 -> 80% magenta

At this point you could see same thing as the screenshot.
Export to PDF and see in Acroread9, and i don't the the result i expect.

For others frames, i used a bleeding mode (multiplicy, or whatever you want), and i duplicate it to get a nice motif.

NB : i saw a tutorial for this stuf done with ID.
TagsNo tags attached.
Patch

Relationships

related to 0004211 closedjghali Gradient behaving oddly 

Activities

eclypse

2010-06-16 03:11

reporter  

Document-1.sla (22,560 bytes)

eclypse

2010-06-16 03:12

reporter  

capt_006.png (94,594 bytes)   
capt_006.png (94,594 bytes)   

eclypse

2010-06-16 03:12

reporter  

Document-1.pdf (9,532 bytes)

jghali

2010-06-16 08:15

administrator   ~0024103

What you are trying to achieve use mostly undefined behavior, see 0004211

jghali

2010-06-16 21:50

administrator   ~0024114

What you are trying to achieve is not possible with pdf gradients. Whatever we do, you would not have result consistent with current display. In your case you should not use gradients but patterns. I consequently modified display and svg export to align them to pdf export.

eclypse

2010-06-16 22:06

reporter   ~0024115

I've tested the same file in scribus1.5.0 (build with lcms2) and it work fine.
I suppose patterns did not used for PDF ? so i think it's possible to do same thing in scribus 1.3.x in future... ;-)

eclypse

2010-06-16 22:17

reporter   ~0024116

Important !

Before rv15200, what i see in scribus is what i want to get in my PDF.

With rv15202, i have an horrible view in scribus and in my PDF...

Could you revert to 15200 and re-think your idea ?

jghali

2010-06-16 22:21

administrator   ~0024117

>> Could you revert to 15200 and re-think your idea ?

No, i repeat that what your are using use mostly undefined behavior and will result in inconsistencies of output between various formats. You should use patterns not gradients for what you want.

jghali

2010-06-17 11:32

administrator   ~0024119

As a further example, when built with qt arthur renderer, scribus was displaying yet another result. After r15201-15203, display is now consistent whether scribus is built with cairo or arthur.

Issue History

Date Modified Username Field Change
2010-06-16 03:11 eclypse New Issue
2010-06-16 03:11 eclypse File Added: Document-1.sla
2010-06-16 03:12 eclypse File Added: capt_006.png
2010-06-16 03:12 eclypse File Added: Document-1.pdf
2010-06-16 07:22 jghali Relationship added related to 0004211
2010-06-16 08:15 jghali Note Added: 0024103
2010-06-16 20:49 jghali Summary Bad rendering for "nul gradient" => inconsistency between gradient display and pdf/svg export
2010-06-16 21:50 jghali Note Added: 0024114
2010-06-16 21:50 jghali Status new => resolved
2010-06-16 21:50 jghali Fixed in Version => 1.3.8svn
2010-06-16 21:50 jghali Resolution open => fixed
2010-06-16 21:50 jghali Assigned To => jghali
2010-06-16 22:06 eclypse Note Added: 0024115
2010-06-16 22:17 eclypse Note Added: 0024116
2010-06-16 22:21 jghali Note Added: 0024117
2010-06-17 11:32 jghali Note Added: 0024119
2010-06-20 22:01 cbradney Status resolved => closed