From cc4b72a07e95d6dbcc27655c7df93ae497b33945 Mon Sep 17 00:00:00 2001 From: Miles Alan Date: Mon, 9 Aug 2021 18:24:14 +0200 Subject: [PATCH] Improve speed of drw_text when provided with large strings Calculates len & ew in drw_font_getexts loop by incrementing instead of decrementing; as such avoids proportional increase in time spent in loop based on provided strings size. --- drw.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drw.c b/drw.c index a745b03..92209bb 100644 --- a/drw.c +++ b/drw.c @@ -312,8 +312,11 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp if (utf8strlen) { drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL); /* shorten text if necessary */ - 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); if (len) { memcpy(buf, utf8str, len);