1pod::Prima::Timer(3)  User Contributed Perl Documentation pod::Prima::Timer(3)
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NAME

6       Prima::Timer - programmable periodical events
7

SYNOPSIS

9           my $timer = Prima::Timer-> create(
10               timeout => 1000, # milliseconds
11               onTick  => sub {
12                  print "tick!\n";
13               },
14           );
15
16           $timer-> start;
17

DESCRIPTION

19       Prima::Timer arranges periodical notifications to be delivered in
20       certain time intervals.  The notifications are triggered by the system,
21       and are seen as "Tick" events. There can be many active Timer objects
22       at one time, spawning events simultaneously.
23

USAGE

25       Prima::Timer is a descendant of Prima::Component.  Objects of
26       Prima::Timer class are created in standard fashion:
27
28         my $t = Prima::Timer-> create(
29            timeout => 1000,
30            onTick  => sub { print "tick\n"; },
31         );
32         $t-> start;
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34       If no `owner` is given, $::application is assumed.
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36       Timer objects are created in inactive state; no events are spawned. To
37       start spawning events, <start()> method must be explicitly called. Time
38       interval value is assigned using the <::timeout> property in
39       milliseconds.
40
41       When the system generates timer event, no callback is called
42       immediately, - an event is pushed into stack instead, to be delivered
43       during next event loop.  Therefore, timeout value is not held
44       accurately, and events may take longer time to pass. More accurate
45       timing scheme, as well as timing with precision less than a
46       millisecond, is not supported by the toolkit.
47

API

49   Properties
50       timeout MILLISECONDS
51           Manages time interval between "Tick" events.  In set-mode call, if
52           the timer is in active state ( see "get_active()", the new timeout
53           value is applied immediately.
54
55   Methods
56       get_active
57           Returns a boolean flag, whether object is in active state or not.
58           In the active state "Tick" events are spawned after "::timeout"
59           time intervals.
60
61       get_handle
62           Returns a system-dependent handle of object
63
64       start
65           Sets object in active state. If succeed, or if the object is
66           already in active state, returns 1. If the system was unable to
67           create a system timer instance, 0 is returned.
68
69       stop
70           Sets object in inactive state.
71
72       toggle
73           Toggles the timer state
74
75   Events
76       Tick
77           A system generated event, spawned every "::timeout" milliseconds if
78           object is in active state.
79

AUTHOR

81       Dmitry Karasik, <dmitry@karasik.eu.org>.
82

SEE ALSO

84       Prima, Prima::Object
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88perl v5.30.1                      2020-01-30              pod::Prima::Timer(3)
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