1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 // Copyright (c) 2004 Novell, Inc.
23 // Jackson Harper (jackson@ximian.com)
27 using System.Threading;
28 using System.ComponentModel;
30 namespace System.Windows.Forms {
31 [DefaultProperty("Interval")]
32 [DefaultEvent("Tick")]
33 [ToolboxItemFilter("System.Windows.Forms", ToolboxItemFilterType.Allow)]
34 public class Timer : Component {
37 private IContainer container;
38 private int interval = 100;
39 private DateTime expires;
41 internal static readonly int Minimum = 15;
48 public Timer (IContainer container) : this ()
53 [DefaultValue (false)]
54 public virtual bool Enabled {
59 if (value != enabled) {
62 // Use AddTicks so we get some rounding
63 expires = DateTime.Now.AddMilliseconds (interval > Minimum ? interval : Minimum);
64 XplatUI.SetTimer (this);
66 XplatUI.KillTimer (this);
78 if (interval == value) {
84 // Use AddTicks so we get some rounding
85 expires = DateTime.Now.AddMilliseconds (interval > Minimum ? interval : Minimum);
87 if (enabled == true) {
88 XplatUI.KillTimer (this);
89 XplatUI.SetTimer (this);
104 internal DateTime Expires {
110 public event EventHandler Tick;
112 public override string ToString ()
114 return base.ToString () + ", Interval: " + Interval;
117 internal void Update (DateTime update)
119 expires = update.AddMilliseconds (interval > Minimum ? interval : Minimum);
122 internal void FireTick ()
124 OnTick (EventArgs.Empty);
128 protected virtual void OnTick (EventArgs e)
134 protected override void Dispose (bool disposing)
136 base.Dispose (disposing);
140 private bool has_last_fire = false;
141 private DateTime last_fire;
143 internal void TickHandler (object sender, EventArgs e)