Bug 220850

Summary: Pieces of prior text draw remain when redrawing after updating text properties
Product: WebKit Reporter: Frank <ifiz.dev>
Component: SVGAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: mmaxfield, zimmermann
Priority: P2    
Version: Safari 14   
Hardware: Mac (Intel)   
OS: macOS 10.14   
Attachments:
Description Flags
Consistent reproduction pattern none

Frank
Reported 2021-01-22 02:14:59 PST
Created attachment 418121 [details] Consistent reproduction pattern Redrawing a text element after font family or font size changes can result in pieces of the old draw remaining on screen. It mainly seems to occur when the updated text has decreased in size in comparison to before the update. Resizing the window, removing focus from the window or changing style attributes on the text element will clear the remnants of the old draw. This seems to be dependent on the used font, but can be consistently reproduced (see attachment).
Attachments
Consistent reproduction pattern (1000 bytes, text/html)
2021-01-22 02:14 PST, Frank 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Alexey Proskuryakov
Comment 1 2021-01-24 17:12:25 PST
Dupe of bug 6274?
Frank
Comment 2 2021-01-27 02:05:19 PST
(In reply to Alexey Proskuryakov from comment #1) > Dupe of bug 6274? I think you're right. The remaining pixels are exactly the part of the glyph that are outside the bounds of the text. This explains why it does not happen for all fonts. Thanks for taking a look, I'll mark this as duplicate.
Frank
Comment 3 2021-01-27 02:05:38 PST
*** This bug has been marked as a duplicate of bug 6274 ***
Note You need to log in before you can comment on or make changes to this bug.