Adding transparence kills fine printing and exporting

Bug #524255 reported by agb
34
This bug affects 4 people
Affects Status Importance Assigned to Milestone
Inkscape
Triaged
Medium
Unassigned

Bug Description

I make business card only with text and add one line. On printing all was fine.
I set to this line transparency to 60% and print again. Now no antialiasing and visible rasterization for all text objects on paper. Setting transparency back to 100% again makes fine printing.

Also export to EPS (with outlines (text in curves)) with transparent line produces pure rastered image layer. No expected curves.

File attached. To reproduce set to vertical line transparency to 60% and print. Or export to EPS and import to Adobe Illustrator.

Windows XP sp3
v.0.47
Samsung ML-1210

Revision history for this message
agb (agb-ukr) wrote :
su_v (suv-lp)
tags: added: eps exporting printing
Revision history for this message
su_v (suv-lp) wrote :

EPS export tested with Inkscape 0.47+devel on OS X 10.5.8:

exporting '100217_ov.svg' to EPS
a) as is
b) vertical line: alpha set to 128
c) vertical line: opacity set to 50%

EPS can't handle opacity -> in c) all content in the EPS file is rasterized, whereas text in a) and b) is exported as text and only the vertical line in b) seems rasterized.

Revision history for this message
François Bianco (fbianco) wrote :

I am experencing the same problem with area/objects of opacity different from 100 %.

I am using Debian Sid :

Inkscape 0.48.1 r9760 (Jul 4 2011)
libcairo2 1.10.2-6 (Debian package version)

Revision history for this message
jazzynico (jazzynico) wrote :

According to duplicate Bug #378760 "Printing pages with objects with opacity != 1.0 gives bad results", it can be mitigated by using fill-opacity and stroke-opacity instead of opacity (then only the transparent object's region is converted to bitmap).

Changed in inkscape:
importance: Undecided → Medium
status: New → Confirmed
Revision history for this message
jazzynico (jazzynico) wrote :

Reproduced on Windows XP, Inkscape trunk revision 11856 (cairo 1.11.2) and revision 11871 (cairo 1.12.8, local test).

Changed in inkscape:
status: Confirmed → Triaged
tags: added: cairo
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