Silverlight学习笔记十八最简单的添加双击事件的实现方法

最近在网上查了一些关于捕捉Silverlight双击事件的方法，觉得比较麻烦，于是本人狠下心来琢磨出了一种相当见的方法，可以用公共类。相当简单哦。

步骤一、双击事件类DoubleClick.cs

using System;
using System.Threading;
using System.Windows;
using System.Windows.Input;
using System.Windows.Threading;

namespace Wjq.SL.View.Core
{
    public delegate void MouseLeftDoubleDownEventHandler(object sender, MouseButtonEventArgs e);
    public delegate void MouseLeftOnceDownEventHandler(object sender, MouseButtonEventArgs e);

    /// <summary>
    /// 定义了双击事件的类
    /// </summary>
    public class DoubleClick
    {
        /// <summary>
        /// 双击事件定时器
        /// </summary>
        private DispatcherTimer doubleClickTimer;

        /// <summary>
        /// 是否单击
        /// </summary>
        private bool isOnceClick;

        /// <summary>
        /// 双击事件
        /// </summary>
        public MouseLeftDoubleDownEventHandler mouseLeftDoubleDown;

        /// <summary>
        /// 单击事件
        /// </summary>
        public MouseLeftOnceDownEventHandler mouseLeftOnceDown;

        /// <summary>
        /// 拥有双击事件的UI
        /// </summary>
        private UIElement owner;

        /// <summary>
        /// 实例化DoubleClick
        /// </summary>
        /// <param name="owner">具有双击事件的UI</param>
        public DoubleClick(UIElement owner)
        {
            this.owner = owner;
            this.bindEvent();
        }

        /// <summary>
        /// 绑定事件
        /// </summary>
        private void bindEvent()
        {
            this.owner.MouseLeftButtonDown += (new MouseButtonEventHandler(this.owner_MouseLeftButtonDown));
            DispatcherTimer timer = new DispatcherTimer();
            //设置单击事件
            timer.Interval = (new TimeSpan(0, 0, 0, 0, 200));
            this.doubleClickTimer = timer;
            this.doubleClickTimer.Tick += (new EventHandler(this.doubleClickTimer_Tick));
        }

        private void doubleClickTimer_Tick(object sender, EventArgs e)
        {
            this.isOnceClick = false;
            this.doubleClickTimer.Stop();
        }

        private void owner_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (!this.isOnceClick)
            {
                this.isOnceClick = true;
                this.doubleClickTimer.Start();
                this.mouseLeftOnceDown(sender, e);
            }
            else
            {
                this.mouseLeftDoubleDown(sender, e);
            }
        }
    }
}

注：此类还定义了它的单击事件，应用时必须将俩个全部实现。

步骤二、应用上述的公共类

1.前台 Full.xaml

<UserControl x:Class="Test.full"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
             xmlns:Wjq="clr-namespace:Wjq.SL.View;assembly=Wjq.SL.View"
    d:DesignHeight="300" d:DesignWidth="400">
   
   
    <Grid x:Name="LayoutRoot" Background="White">
        <Canvas Background="AntiqueWhite" x:Name="fullscreen"></Canvas>
    </Grid>
</UserControl>

2.后台 Full.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Wjq.SL.View.Core;
using System.Windows.Threading;

namespace Test
{
    public partial class full : UserControl
    {
        public full()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(UserControl_Loaded);
        }

        private DoubleClick MouseDoubleClick;

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            MouseDoubleClick = new DoubleClick(this.fullscreen);
            this.MouseDoubleClick.mouseLeftDoubleDown += new MouseLeftDoubleDownEventHandler(full_mouseLeftDoubleDown);
            this.MouseDoubleClick.mouseLeftOnceDown += new MouseLeftOnceDownEventHandler(full_mouseLeftOnceDown);
        }

        private void full_mouseLeftDoubleDown(object sender, MouseButtonEventArgs e)
        {
            Application.Current.Host.Content.IsFullScreen=!Application.Current.Host.Content.IsFullScreen;
        }

　　//如果不用，也得实现

        private void full_mouseLeftOnceDown(object sender, MouseButtonEventArgs e)
        {
            return;
        }

    }
}