From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / hacks / barcode.c

diff --git a/hacks/barcode.c b/hacks/barcode.c
index cd3038ce534b1bf4fc109b621232a387bb3bf6db..271aad9948283fbf212d26b80356a6ee537507eb 100644 (file)
--- a/hacks/barcode.c
+++ b/hacks/barcode.c
@@ -1635,6 +1635,12 @@ static void scrollModel (struct state *st)
             st->barcodes[st->barcode_count - 1].mag * BARCODE_WIDTH);
        barcode->x += RAND_FLOAT_01 * 100;
        barcode->mag = RAND_FLOAT_01 * MAX_MAG;
+
+        if (st->windowWidth < 100 || st->windowHeight < 100) {
+          barcode->mag *= 0.5;
+          if (barcode->mag <= 0) barcode->mag = 1;
+        }
+
        barcode->y =
            RAND_FLOAT_01 * (st->windowHeight - BARCODE_HEIGHT * barcode->mag);
        if (barcode->y < 0)