Issue 124686 - EPS contents only shown with additional tools or if preview in EPS available
Summary: EPS contents only shown with additional tools or if preview in EPS available
Alias: None
Product: Writer
Classification: Application
Component: open-import (show other issues)
Version: 3.3.0 or older (OOo)
Hardware: All Windows 7
: P3 Normal (vote)
Target Milestone: 4.2.0
Assignee: Armin Le Grand
QA Contact:
Depends on:
Blocks: 124915
  Show dependency tree
Reported: 2014-04-15 09:23 UTC by Rainer Bielefeld
Modified: 2017-05-20 10:35 UTC (History)
4 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Extracted EPS (28.45 KB, application/postscript)
2014-04-15 09:30 UTC, Rainer Bielefeld
no flags Details

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Description Rainer Bielefeld 2014-04-15 09:23:05 UTC
Steps how to reproduce Attachment 57833 [details] for Issue 96046 with "AOO 4.1.0 RC3 – English UI / German locale [AOO410m17(Build:9763))  -  Rev. 1586584 2014-04-11 08:56:50]" on German WIN7 Home Premium (64bit)", “historic” 4. User Profile used for all predecessor versions:

1. Open document from AOO Start Center
   Expected: Picture as per Attachment 83193 [details] for Issue 124684
   Actual: Empty rectangle, may be with placeholder text 
           "Creator:inkscape 0.45.1" (With OOo 2.0.2)            :-)
Comment 1 Rainer Bielefeld 2014-04-15 09:30:30 UTC
Created attachment 83195 [details]
Extracted EPS

This one might have a more general root, attachment will not show contents in DRAW
Comment 2 Edwin Sharp 2014-04-15 13:21:02 UTC
Picture visible OK
AOO410m17(Build:9763)  -  Rev. 1586584
2014-04-11 09:13 - Linux x86_64
Comment 3 Edwin Sharp 2014-04-17 09:46:26 UTC
Confirmed with
AOO420m1(Build:9800)  -  Rev. 1586681
Win 7
Comment 4 Armin Le Grand 2014-04-23 13:11:17 UTC
Tried with AOO401, AOO34, OOo3.3, OOo3.2, all do the same. Checked for eps import, what we have is a filter (ieps.cxx) which:
- tries to find an embedded preview (wmf or tiff)
- tries "%%BeginPreview:" in eps prolog format
- tries convert to emf using external tool 'pstoedit'
- tries convert to png using external tool 'convert'
- tries convert to png using external tool 'gs' ('gswin32c' on win)
-> if all that goes wrong, creates the red rectangle and tries to add info from the eps (looking for "%%Title:", "%%Creator:", "%%CreationDate:" and "%%LanguageLevel:").
Thus the success depends heavily on what external tools are available on the machine in the path AOO is using. On my machine 'convert' is found (it's ImageMagick 6.7.2-7), but conversion wents wrong somehow...
Comment 5 Edwin Sharp 2014-04-23 13:23:20 UTC
Is it possible to notify user what external tool to install?
Comment 6 Armin Le Grand 2014-04-23 13:31:16 UTC
Looks as if convert (ImageMagick) itself uses gswin32c.exe which is not available (Postscript delegate failed). After installing GhostScript and making available to AOO in the path the image is shown. Thus this error depends on local configurations of the machine AOO is executed on (if tools like GhostScript are installed), it's not an AOO internal error. AOO itself has no own PS interpreter, that would be possible but too much work.
Comment 7 Armin Le Grand 2014-04-23 13:44:01 UTC
@Edwin: I think it makes not too much sense; all this is only about a *preview* of the eps content; it is still not exported to pdf or printed, except on PS printers (hopefully). Normally the eps should already contain a preview image, then all this is not needed. To use this conversion path that is intended for a preview image to create content for the exports and printing is probably not a good idea; the quality is a png bitmap in a given resolution, not sufficient for people who use eps probably by purpose. Maybe something for the readme file or help (if not already there?)
Comment 8 Edwin Sharp 2014-04-23 14:00:57 UTC
wont fix per comment 6
see issue 124733
Comment 9 Rainer Bielefeld 2014-04-23 14:51:40 UTC
I should have read Help, what tells about several limitations concerning EPS. And indeed, Printing of the rectangle preview with a "PS printer -> PDF" (FreePDF) shows a nice document from attachment 83195 [details] 

(a) It's a little worrying to find EPS quite normally listed in the allowed
    file types list. 
    May be there should be a hint like "for limitations see Help"?
(b) I have installed Ghostscript, helps nothing. 
(c) I Installed pstoedit 3.62 from sourceforge, does not work, but may be
    I need to reboot PC or something else? I will try later
(d) IF pstoedit / GS will work we should leave a hint somewhere in Documentation
    or a minimum Extension only providing a little help and a link to
    source forge ("... on your own risk ...")

I adapt Summary to current state of research
Comment 10 Armin Le Grand 2014-04-23 15:07:44 UTC
(a) yes in the sense that it is only *transported* and will be visible only when the target is a PS printer/export
(b) helps here, but it needs to be in the path for office (I added to user path in Win7 control panel, search for path)
(c) could not get running, it potentially can produce wmf, thus would stay on vector graphic (for quality)

On win this may be not standard, but gs and pstoedit may work on linux out of the box (do not know mac)
Comment 11 Armin Le Grand 2014-04-23 16:17:57 UTC
Still found an error; the fallback EPS preview creation adds the author/creator/etc fields from the EPS file, but these are no longer shown in the graphic object. This is because the metafile to primitive decomposition for the META_TEXTRECT_ACTION is a little tricky. It needs to reuse the Font set so far for the subcontent. Also stumbled about vcl creating a default font with the empty constructor Font::Font() that uses a local static instance of Impl_Font called aStaticImplFont. Impl_Font::Impl_Font() itself sets no size for the Size-type member, thus the empty constructed default font has no size at all (and thus no height). This was used before I reused the font (see above) and is not a useful default. I changed the Impl_Font::Impl_Font() to init the FontSize to Size(0, 16) as default.
Preparing commit...
Comment 12 SVN Robot 2014-04-23 16:19:31 UTC
"alg" committed SVN revision 1589449 into trunk:
i124686 give empty constructed default font a default height
Comment 13 SVN Robot 2014-04-23 16:20:16 UTC
"alg" committed SVN revision 1589450 into trunk:
i124686 reuse already set font for interpreting the MetaFile action META_TEXT...
Comment 14 Armin Le Grand 2014-04-23 16:21:28 UTC
Okay, corrected that, done.
Comment 15 Edwin Sharp 2014-04-23 16:45:11 UTC
fixed per comment 14
Comment 16 Armin Le Grand 2014-04-24 09:42:08 UTC
adapted target milestone