Switched to ruby and updated to create two images, in red and blue.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13035 71c3de6d-444a-0410-be80-ed276b4c234a

war/images/scrollbar/make.rb

+#!/usr/bin/ruby
+
+# width of the band
+$u=20
+$uu=$u*2
+
+def make(step,color)
+  system "convert -size #{$uu}x8 xc:white -fill '#{color}' -stroke '#{color}' -draw \"polyline 0,#{$u-1} #{$u-1},0 #{$uu-1},0 #{$u},#{$u-1}\" -roll +#{step}+0  screen.#{step}.gif" or fail
+end
+
+colors = { "red" => "#cc0000", "blue" => "#3465a4" }
+colors.keys.each do |name|
+  list = []
+  color = colors[name];
+  
+  (0...$uu).each do |i|
+    make(i,color)
+    list << "screen.#{i}.gif"
+  end
+
+  system "convert -delay 10 #{list.join(" ")} -loop 0 progress-unknown-#{name}.gif" or fail
+end

war/images/scrollbar/make.sh

-#!/bin/zsh -ex
-KSH_ARRAYS=off
-
-# width of the band
-u=20
-
-color="#3465a4"
-
-U=$(($u*2))
-
-
-make() {
-  convert -size ${U}x8 xc:white -fill $color -stroke $color -draw "polyline 0,$(($u-1)) $(($u-1)),0 $(($U-1)),0 $u,$(($u-1))" -roll +$1+0  screen.$1.gif
-}
-
-set -A list
-
-for ((  i=0 ; i<$U; i+=1 ))
-do
-  make $i
-  list[$((${#list}+1))]=screen.$i.gif
-done
-
-convert -delay 10 ${list[@]} -loop 0 progress-unknown.gif