[hackers] Re: [dmenu][patch] Improve speed of drw_text when provided with large strings

From: Miles Alan <m_AT_milesalan.com>
Date: Sat, 07 Aug 2021 21:39:44 -0400

On Sat, Aug 7, 2021, at 9:34 PM, m_AT_milesalan.com wrote:
> - for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
> - drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
> + if (ew > w)
> + for (ew = 0, len = 0; ew < w - lpad * 2 && len < MIN(utf8strlen,
> sizeof(buf) - 1); len++)
> + drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
> + else
> + len = MIN(utf8strlen, sizeof(buf) - 1);

To test, try selecting previous/next items with the following (adjust -c as needed):
for i in $(seq 20); do
  cat /dev/urandom | base64 | tr -d '\n' | head -c 1000000
done | ./dmenu -l 10
Received on Sun Aug 08 2021 - 03:39:44 CEST