Bug 214180 – [GTK] MiniBrowser: title of back-forward menu items needs to be truncated when it's too large

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Carlos Garcia Campos]

The popover menu doesn't set ellipsize on the inner label, so we need to do it manually. In the case of GTK4 we also need to markup escape it.

[Carlos Garcia Campos]

Created attachment 403956 [details]
Patch

[Adrian Perez]

Comment on attachment 403956 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=403956&action=review

> Tools/MiniBrowser/gtk/BrowserWindow.c:235
> +            displayTitle[MAX_TITLE - 1] = '.';

I would use an actual ellipsis character (“…”, U+2026) which in
UTF-8 is the sequence of bytes 0xE2, 0x80, 0xA6:

  displayTitle[MAX_TITLE - 3] = 0xE2;
  displayTitle[MAX_TITLE - 2] = 0x80;
  displayTitle[MAX_TITLE - 1] = 0xA6;

😉️

[Carlos Garcia Campos]

Committed r264217: <https://trac.webkit.org/changeset/264217>

[Adrian Perez]

Comment on attachment 403956 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=403956&action=review

>> Tools/MiniBrowser/gtk/BrowserWindow.c:235
>> +            displayTitle[MAX_TITLE - 1] = '.';
> 
> I would use an actual ellipsis character (“…”, U+2026) which in
> UTF-8 is the sequence of bytes 0xE2, 0x80, 0xA6:
> 
>   displayTitle[MAX_TITLE - 3] = 0xE2;
>   displayTitle[MAX_TITLE - 2] = 0x80;
>   displayTitle[MAX_TITLE - 1] = 0xA6;
> 
> 😉️

I just had a sudden realization: If the “MAX_TITLE - 3” index falls
in the middle of an UTF-8 multi byte sequence, the string resulting
from ellipsizing this way results in an invalid UTF-8 string.

Dunno if there is a better option, but one idea would be to use
g_utf8_offset_to_pointer(displayTitle, MAX_TITLE - 3) to find out
the corresponding byte offset for the amount of *Unicode* characters
(not bytes) we want to show before the ellipsis, and then append the
ellipsis there.

Sorry for not noticing this earlier.

[Carlos Garcia Campos]

(In reply to Adrian Perez from comment #4)
> Comment on attachment 403956 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=403956&action=review
> 
> >> Tools/MiniBrowser/gtk/BrowserWindow.c:235
> >> +            displayTitle[MAX_TITLE - 1] = '.';
> > 
> > I would use an actual ellipsis character (“…”, U+2026) which in
> > UTF-8 is the sequence of bytes 0xE2, 0x80, 0xA6:
> > 
> >   displayTitle[MAX_TITLE - 3] = 0xE2;
> >   displayTitle[MAX_TITLE - 2] = 0x80;
> >   displayTitle[MAX_TITLE - 1] = 0xA6;
> > 
> > 😉️
> 
> I just had a sudden realization: If the “MAX_TITLE - 3” index falls
> in the middle of an UTF-8 multi byte sequence, the string resulting
> from ellipsizing this way results in an invalid UTF-8 string.
> 
> Dunno if there is a better option, but one idea would be to use
> g_utf8_offset_to_pointer(displayTitle, MAX_TITLE - 3) to find out
> the corresponding byte offset for the amount of *Unicode* characters
> (not bytes) we want to show before the ellipsis, and then append the
> ellipsis there.
> 
> Sorry for not noticing this earlier.

You are right, I'll try to fix it in a follow up.