[Libreoffice-bugs] [Bug 143831] New: EDITING Black background for spell checking underline on Windows GDI

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=143831

            Bug ID: 143831
           Summary: EDITING Black background for spell checking underline
                    on Windows GDI
           Product: LibreOffice
           Version: 7.3.0.0 alpha0+ Master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: bibisected, bisected, regression
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: libreoffice at nisz.hu
                CC: merttumer at outlook.com, nemeth at numbertext.org,
                    varga.balazs3 at nisz.hu

Created attachment 174219
  --> https://bugs.documentfoundation.org/attachment.cgi?id=174219&action=edit
Example file from Writer

Attached file contains some lorem ipsum text with English document language. 
With Windows GDI rendering the spell checkers red underlines have a black
background instead of a transparent one.
Does not happen with Skia.

Steps to reproduce:
    1. Turn off Skia rendering on Windows, restart.
    2. Open attached file. Make sure to have English spell checking installed
(or change the document language to one for which you have dictionaries).

Actual results:
Spell checking red squiggly underlines have black background.

Expected results:
Red underlines should have transparent background.

LibreOffice details:
Version: 7.3.0.0.alpha0+ (x64) / LibreOffice Community
Build ID: d1f1f546b212ecd651146addeb328806bb270d5f
CPU threads: 4; OS: Windows 10.0 Build 18363; UI render: default; VCL: win
Locale: hu-HU (hu_HU); UI: en-US
Calc: CL

Additional Information:

Bibisected using bibisect-win64-7.3 to:
URL:
https://cgit.freedesktop.org/libreoffice/core/commit/?id=0759191e6923945469bc426b2c322ddeade12e09 
author  merttumer <mert.tumer at collabora.com>    2021-06-16 21:04:33 +0300
committer       Mert Tumer <mert.tumer at collabora.com>   2021-07-07 08:05:58
+0200
commit  0759191e6923945469bc426b2c322ddeade12e09 (patch)

Cache a static wavy line as bitmap and reuse it

Adding CC to: Mert Tumer

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