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Bug 788071 - Label: Emoji selection rendering broken
Label: Emoji selection rendering broken
Status: RESOLVED NOTGNOME
Product: gtk+
Classification: Platform
Component: Widget: GtkLabel
3.22.x
Other Linux
: Normal normal
: ---
Assigned To: gtk-bugs
gtk-bugs
Depends on:
Blocks:
 
 
Reported: 2017-09-23 06:11 UTC by Timm Bäder
Modified: 2017-12-18 03:13 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
Screencast showing the issue (296.05 KB, video/webm)
2017-09-23 06:11 UTC, Timm Bäder 		Details

Description Timm Bäder 2017-09-23 06:11:57 UTC 
Created attachment 360297 [details]
Screencast showing the issue

I'm not sure what exactly the problem is, but the attached screencast illustrates it. It looks like the selection gets drawn above the emojis unless you select the entire range. Also only happens when selecting from end to start, not from start to end.
Comment 1 Matthias Clasen 2017-09-25 18:58:43 UTC 
textview, entry or selectable label ?
Comment 2 Timm Bäder 2017-09-25 19:03:55 UTC 
Selectable label
Comment 3 Matthias Clasen 2017-09-30 03:42:08 UTC 
I haven't reproduced this yet
Comment 4 Matthias Clasen 2017-10-02 11:26:21 UTC 
I have reproduced it now - curiously, it only happens with the cairo renderer, and it depends on the exact emoji being used.
Comment 5 Matthias Clasen 2017-12-18 03:13:28 UTC 
This was fixed in cairo: https://cgit.freedesktop.org/cairo/commit/?id=903b0de539844c144c63ea57c30e84a23360c290