Improve speed of drw_text when provided with large strings 71623353 
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.
Miles Alan · 2021-08-09 18:24 1 file(s) · +5 −2
drw.c +5 −2
310 310 
		if (utf8strlen) {
311 311 
			drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL);
312 312 
			/* shorten text if necessary */
313 - 
			for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
314 - 
				drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
313 + 
			if (ew > w)
314 + 
				for (ew = 0, len = 0; ew < w - lpad * 2 && len < MIN(utf8strlen, sizeof(buf) - 1); len++)
315 + 
					drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
316 + 
			else
317 + 
				len = MIN(utf8strlen, sizeof(buf) - 1);
315 318 

            

            
            

                316
                319
                 
                
			if (len) {

            

            
            

                317
                320
                 
                
				memcpy(buf, utf8str, len);