https://bugs.documentfoundation.org/show_bug.cgi?id=156364
Bug ID: 156364
Summary: Fonts are displayed slightly different on Linux, which
causes the characters to overlap
Product: LibreOffice
Version: 24.2.0.0 alpha0+ Master
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Writer
Assignee: [email protected]
Reporter: [email protected]
Created attachment 188456
--> https://bugs.documentfoundation.org/attachment.cgi?id=188456&action=edit
Comparing output in Linux and Windows
Description:
With Harfbuzz as the font rendering engine in LibreOffice, it is expected that
font rendering output on display and print are the same on different platforms.
But, in reality there are slight differences. For example, in this case fonts
are displayed slightly different on Linux, which causes the characters to
overlap.
Steps to Reproduce:
1. Open attachment 188277 in LO Writer dev master on Windows
2. Open the same file in LO Writer dev master on Linux
3. Compare the outputs on Windows and Linux display
Actual Results:
The outputs on display are different, and the characters sometimes overlap. For
example, in the last line the starting » falls on the next character, which is
ب and there is not (slight) space between them. Please look at «به همین دلیل»
and other places in the start of double quotes «».
Expected Results:
Output on display in different platforms should be similar, and anyway the
characters should not overlap in different zoom levels. There should be a
slight space between » and ب in the last line.
For a comparison, the results are normalized (for size) and compared side by
side in the attachment with 110% zoom level on both Windows and Linux. LO on
Windows and Linux were built from the same git revision.
Reproducible: Always
User Profile Reset: No
Additional Info:
LO 24.2 dev master on Linux:
Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: bb01ef3865c406f322d6e656faba2191aaeeb6da
CPU threads: 12; OS: Linux 5.19; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: CL threaded
LO 24.2 dev master on Windows:
Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: bb01ef3865c406f322d6e656faba2191aaeeb6da
CPU threads: 12; OS: Windows 10.0 Build 22621; UI render: Skia/Vulkan; VCL: win
Locale: en-US (en_US); UI: en-US
Calc: CL threaded
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