fix the erroneous back_bar bug _for real_

also add a nice bar script

lock_bar.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+B='#00000000'  # blank
+C='#ffffff22'  # clear ish
+D='#ff00ffcc'  # default
+T='#ee00eeee'  # text
+W='#880000bb'  # wrong
+V='#bb00bbbb'  # verifying
+
+./x86_64-pc-linux-gnu/i3lock \
+--blur 5 \
+--bar-indicator \
+--bar-position h \
+--bar-direction 1 \
+--bar-max-height 50 \
+--bar-base-width 50 \
+--bar-color 000000cc \
+--keyhlcolor 880088cc \
+--bar-periodic-step 50 \
+--bar-step 50 \
+--bar-width 250 \
+--redraw-thread \
+\
+--clock \
+--force-clock \
+--timepos 125:h-110 \
+--timecolor 880088ff \
+--datepos 5:ty \
+--datecolor 770077ff \
+--date-align 1 \
+--time-align 1 \
+--ringvercolor 8800ff88 \
+--ringwrongcolor ff008888

unlock_indicator.c

@@ -924,7 +924,7 @@ xcb_pixmap_t draw_image(uint32_t *resolution) {
                     break;
             }
 
-            if (cur_bar_height != 0 && ((bar_bidirectional && ((cur_bar_height * 2) < bar_base_height))
+            if (cur_bar_height > 0 && cur_bar_height < bar_base_height &&  ((bar_bidirectional && ((cur_bar_height * 2) < bar_base_height))
                     || (!bar_bidirectional && (cur_bar_height < bar_base_height)))) {
                 cairo_rectangle(bar_ctx, back_x, back_y, back_width, back_height);
                 cairo_fill(bar_ctx);