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authorMiles Alan <m@milesalan.com>2021-08-09 18:24:14 +0200
committerHiltjo Posthuma <hiltjo@codemadness.org>2021-08-09 18:25:19 +0200
commit716233534b35f74dba5a46ade8f1a6f8cc72fea4 (patch)
tree4686918cd9beeb6920b1e93462d312cacd81f5aa
parent138b405f0c8aa24d8a040cc1a1cf6e3eb5a0ebc7 (diff)
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.
-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);