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authorMiles Alan <m@milesalan.com>2021-08-07 21:34:35 -0400
committerHiltjo Posthuma <hiltjo@codemadness.org>2021-08-09 18:20:51 +0200
commitc585e8e498ec6f9c423ab8ea07cf853ee5b05fbe (patch)
treef5e85f3b182436b7a5c059c72791506911ee6c0a /drw.c
parent523aa08f51a88c59ad4b1f600f8ce3d122e9e289 (diff)
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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.
Diffstat (limited to 'drw.c')
-rw-r--r--drw.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drw.c b/drw.c
index 4cdbcbe..9c39086 100644
--- a/drw.c
+++ b/drw.c
@@ -310,8 +310,11 @@ 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);