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# idletime.tcl ---
#
# Set global idle time callbacks.
#
# Copyright (c) 2007-2008
#
# This file is distributed under BSD style license.
#
# $Id: idletime.tcl,v 1.11 2008-07-30 13:23:59 matben Exp $
package require Tk 8.5
package provide idletime 1.0
namespace eval ::idletime {
variable lastmouse [winfo pointerxy .]
variable state
variable status "stop"
# Keep a 2 secs resolution which should be enough for autoaway.
variable pollms 2000
variable tclidlems 0
variable inactiveProc
# Fallback pure tcl method.
set inactiveProc [namespace code tclinactive]
if {[catch {tk inactive}] || ([tk inactive] < 0)} {
switch -- $::tcl_platform(platform) {
unix {
if {$::tcl_platform(os) eq "Darwin"} {
if {[catch {package require carbon 0.2}]} {
set inactiveProc [namespace code AquaIdleTime]
} else {
set inactiveProc {carbon::inactive}
}
} else {
if {![catch {package require tkinactive}]} {
set inactiveProc tkinactive
}
}
}
windows {
if {![catch {package require tkinactive}]} {
set inactiveProc tkinactive
}
}
}
} else {
set inactiveProc {tk inactive}
}
}
proc ::idletime::init {} {
variable inactiveProc
variable status
# Protect from multiple calls.
if {$status eq "run"} {
return
}
set status "run"
if {$inactiveProc eq [namespace code tclinactive]} {
tcltimer
}
poll
}
proc ::idletime::stop {} {
variable afterID
variable status
set status "stop"
foreach key {poll tcl} {
if {[info exists afterID($key)]} {
after cancel $afterID($key)
unset afterID($key)
}
}
}
# idletime::add --
#
# Adds or replaces a callback.
proc ::idletime::add {procName secs} {
variable state
variable shot
set state($procName) $secs
set shot($procName) 0
}
proc ::idletime::remove {procName} {
variable state
variable shot
unset -nocomplain state($procName)
unset -nocomplain shot($procName)
}
proc ::idletime::poll {} {
variable state
variable shot
variable pollms
variable inactiveProc
variable afterID
variable status
set idlesecs [expr {[eval $inactiveProc]/1000}]
foreach {name secs} [array get state] {
# Protect for the situation where any handler is removed when
# doing the callback! [Bug #196306]
if {![info exists state($name)]} {
continue
}
if {$idlesecs >= $secs} {
# Fire!
if {!$shot($name)} {
set shot($name) 1
uplevel #0 $name idle
}
} else {
if {$shot($name)} {
set shot($name) 0
uplevel #0 $name active
}
}
}
# We might have been stopped from a callback!
if {$status eq "run"} {
set afterID(poll) [after $pollms [namespace code poll]]
}
}
# Pure tcl implementation that handles mouse moves only.
proc ::idletime::tclinactive {} {
variable tclidlems
return [expr {$tclidlems/1000}]
}
proc ::idletime::tcltimer {} {
variable lastmouse
variable pollms
variable tclidlems
variable afterID
set mouse [winfo pointerxy .]
if {$mouse eq $lastmouse} {
incr tclidlems $pollms
} else {
set tclidlems 0
}
set lastmouse $mouse
set afterID(tcl) [after $pollms [namespace code tcltimer]]
}
# idletime::AquaIdleTime --
#
# Returns the idle time in seconds. Better to use carbon::inactive.
proc ::idletime::AquaIdleTime {} {
if {[catch {
set fd [open {|ioreg -x -c IOHIDSystem}]
set line [read $fd]
close $fd
}]} {
return 0
}
set minms 1000000
set match [regexp -all -inline {"HIDIdleTime" = (?:0x|<)([[:xdigit:]]+)} $line]
foreach {m nsecs} $match {
set ms [expr {"0x$nsecs"/1000000}]
if {$ms < $minms} {
set minms $ms
}
}
return $minms
}
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