Bug 70658

Summary: VIEWING: Vertically compressed line of print
Product: LibreOffice Reporter: John van Someren <john>
Component: WriterAssignee: Not Assigned <libreoffice-bugs>
Status: NEW --- QA Contact:
Severity: normal    
Priority: medium CC: jbfaure
Version: 4.1.2.3 release   
Hardware: All   
OS: All   
Whiteboard: BSA
i915 platform: i915 features:
Attachments: A picture of the compressed line of print with a correct line of print above and below.

Description John van Someren 2013-10-20 00:41:38 UTC
Created attachment 87862 [details]
A picture of the compressed line of print with a correct line of print above and below.

While reading a long document (50,000+ words) an occasional line (1 in 50? 1 in 100?) is compressed as if it is missing a horizontal row of pixels. Sometimes I feel that it is a line that has been cut off at the bottom of the screen before I scrolled down to it, but this might just be a fancy of mine.

In the last few releases (4.0 ? ?) I could always recover the display by clicking anywhere on the affected line with the mouse. Since I installed 4.1.2.3 yesterday this mouse click no longer works.

This is an irritant, but not a disaster. It has been a part of Writer for as long as I can remember, and I am only reporting it because clicking on it with the mouse no longer fixes the display problem.

I have no experience of Writer with short documents.

Regards
John
Operating System: Windows 7
Version: 4.1.2.3 release
Comment 1 Frank Sanders 2013-11-02 19:26:08 UTC
I have the same or almost the same issue. In a printed document, some text lines are randomly compressed or stretched vertically. This happens in large text files, in some but not all pages. Either printing from Libreoffice writer or from a pdf file generated by Libreoffice writer.
If the text is short (one or two pages) all the lines are fine, but an image in the header can be deformed.
I'm not sure from where this bug is generated: from Libreoffice or the printer driver, or whatever else.
I noticed too the deformation on screen, disappears when clicking on the text affected.


regards
Frank
Operating System: Linux Mint Debian (LMDE)
Libreoffice: 4.1.2.3
Comment 2 John van Someren 2013-11-02 21:01:08 UTC
Hi Frank,

I agree that this occasional problem occurs in long documents. All my documents are at least ten of thousands words long, so I can’t give any more useful information to discover any document size threshold.

I have never had a line stretched vertically, only compressed vertically. I have had compressed lines hundreds of times, at least once every writing/editing session.

Does LibreOffice use the printer driver when formatting the screen? I suppose it must do, in order to check the margins. I have never printed any of my documents myself. Of course, Windows will inform LO about the default printer which, in my case, is an HP Deskjet 3050 (J610 Series).

I have always had this bug since my first use of LO a year or two ago. (An uncertain memory tells me that I saw this fault when I used Open Office several years ago.) Until LO version 4.1 the compression vanished on screen when I mouseclicked on the offending line. The mouseclick solution no longer works in 4.1. That’s why I finally got around to reporting it as a bug!

You describe the same fault occurring when a PDF is printed. At my next editing session I will switch my default printer to a fax machine and see if the problem disappears.

Regards
John
Windows 7, 32-bit
LO 4.1.2.3
From: bugzilla-daemon@freedesktop.org
Sent: Saturday, November 02, 2013 7:26 PM
To: john@vansomeren.co.uk
Subject: [Bug 70658] VIEWING: Vertically compressed line of print


Comment # 1 on bug 70658 from Frank Sanders
I have the same or almost the same issue. In a printed document, some text
lines are randomly compressed or stretched vertically. This happens in large
text files, in some but not all pages. Either printing from Libreoffice writer
or from a pdf file generated by Libreoffice writer.
If the text is short (one or two pages) all the lines are fine, but an image in
the header can be deformed.
I'm not sure from where this bug is generated: from Libreoffice or the printer
driver, or whatever else.
I noticed too the deformation on screen, disappears when clicking on the text
affected.


regards
Frank
Operating System: Linux Mint Debian (LMDE)
Libreoffice: 4.1.2.3
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Comment 3 Jean-Baptiste Faure 2013-11-24 14:13:49 UTC
I experience the same behavior from time to time with Linux versions. Generally I can restore a clean display by scrolling down and back in the document or by minimizing then restoring the window.

Best regards. JBF

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