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# -*- tcl -*-
# (C) 2006-2013 Andreas Kupries <andreas_kupries@users.sourceforge.net>
##
# ###
namespace eval ::sak::animate {
# EL (Erase Line)
# Sequence: ESC [ n K
# ** Effect: if n is 0 or missing, clear from cursor to end of line
# Effect: if n is 1, clear from beginning of line to cursor
# Effect: if n is 2, clear entire line
variable eeol \033\[K
}
# ###
proc ::sak::animate::init {} {
variable prefix
variable n 0
variable max [llength $prefix]
}
proc ::sak::animate::next {string} {
variable prefix
variable n
variable max
variable eeol
puts -nonewline stdout \r\[[lindex $prefix $n]\]\ $string$eeol
flush stdout
incr n ; if {$n >= $max} {set n 0}
return
}
proc ::sak::animate::last {string} {
variable clear
puts stdout \r\[$clear\]\ $string
flush stdout
return
}
# ###
namespace eval ::sak::animate {
namespace export init next last
variable prefix {
{* } {* } {* } {* } {* }
{ * } { * } { * } { * } { * }
{ * } { * } { * } { * } { * }
{ *} { *} { *} { *} { *}
{ * } { * } { * } { * } { * }
{ * } { * } { * } { * } { * }
}
variable clear { }
}
##
# ###
package provide sak::animate 1.0
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