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圆形进度条

前台：

 1 <UserControl x:Class="PlotTool.LoadingWait"
 2              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
 5              IsVisibleChanged="HandleVisibleChanged">
 6     <UserControl.Background>
 7         <SolidColorBrush Color="Black" Opacity="0.2"  />
 8     </UserControl.Background>
 9     <UserControl.Resources>
10         <SolidColorBrush Color="#FF007BE5" x:Key="CirclesColor" />
11         <!--<SolidColorBrush Color="Black" x:Key="BackgroundColor" Opacity=".20" />-->
12     </UserControl.Resources>
13     
14     
15 
16     <Viewbox Width="100" Height="100"  
17             HorizontalAlignment="Center"  
18             VerticalAlignment="Center">
19         <Grid x:Name="LayoutRoot"   
20                 Background="Transparent"  
21                 ToolTip="Please wait...."  
22                 HorizontalAlignment="Center"  
23                 VerticalAlignment="Center">
24             <TextBlock Text="加载中..."  HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="14" Foreground="#FFE3953D" FontWeight="Bold" />
25             <Canvas RenderTransformOrigin="0.5,0.5"  
26                     HorizontalAlignment="Center"  
27                     VerticalAlignment="Center" Width="120"  
28                     Height="120" Loaded="HandleLoaded"  
29                     Unloaded="HandleUnloaded"  >
30                 <Ellipse x:Name="C0" Width="20" Height="20"  
31                          Canvas.Left="0"  
32                          Canvas.Top="0" Stretch="Fill"  
33                          Fill="{StaticResource CirclesColor}" Opacity="1.0"/>
34                 <Ellipse x:Name="C1" Width="20" Height="20"  
35                          Canvas.Left="0"  
36                          Canvas.Top="0" Stretch="Fill"  
37                          Fill="{StaticResource CirclesColor}" Opacity="0.9"/>
38                 <Ellipse x:Name="C2" Width="20" Height="20"  
39                          Canvas.Left="0"  
40                          Canvas.Top="0" Stretch="Fill"  
41                          Fill="{StaticResource CirclesColor}" Opacity="0.8"/>
42                 <Ellipse x:Name="C3" Width="20" Height="20"  
43                          Canvas.Left="0"  
44                          Canvas.Top="0" Stretch="Fill"  
45                          Fill="{StaticResource CirclesColor}" Opacity="0.7"/>
46                 <Ellipse x:Name="C4" Width="20" Height="20"  
47                          Canvas.Left="0"  
48                          Canvas.Top="0" Stretch="Fill"  
49                          Fill="{StaticResource CirclesColor}" Opacity="0.6"/>
50                 <Ellipse x:Name="C5" Width="20" Height="20"  
51                          Canvas.Left="0"  
52                          Canvas.Top="0" Stretch="Fill"  
53                          Fill="{StaticResource CirclesColor}" Opacity="0.5"/>
54                 <Ellipse x:Name="C6" Width="20" Height="20"  
55                          Canvas.Left="0"  
56                          Canvas.Top="0" Stretch="Fill"  
57                          Fill="{StaticResource CirclesColor}" Opacity="0.4"/>
58                 <Ellipse x:Name="C7" Width="20" Height="20"  
59                          Canvas.Left="0"  
60                          Canvas.Top="0" Stretch="Fill"  
61                          Fill="{StaticResource CirclesColor}" Opacity="0.3"/>
62                 <Ellipse x:Name="C8" Width="20" Height="20"  
63                          Canvas.Left="0"  
64                          Canvas.Top="0" Stretch="Fill"  
65                          Fill="{StaticResource CirclesColor}" Opacity="0.2"/>
66                 <Canvas.RenderTransform>
67                     <RotateTransform x:Name="SpinnerRotate"  
68                          Angle="0" />
69                 </Canvas.RenderTransform>
70             </Canvas>
71         </Grid>
72     </Viewbox>
73 </UserControl>

 

后台：

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;

namespace PlotTool
{
    /// <summary>
    /// Interaction logic for LoadingWait.xaml
    /// </summary>
    public partial class LoadingWait : UserControl
    {
        #region Data
        private readonly DispatcherTimer animationTimer;
        #endregion

        #region Constructor
        public LoadingWait()
        {
            InitializeComponent();

            animationTimer = new DispatcherTimer(
                DispatcherPriority.ContextIdle, Dispatcher);
            animationTimer.Interval = new TimeSpan(0, 0, 0, 0, 90);
        }
        #endregion

        #region Private Methods
        private void Start()
        {
            animationTimer.Tick += HandleAnimationTick;
            animationTimer.Start();
        }

        private void Stop()
        {
            animationTimer.Stop();
            animationTimer.Tick -= HandleAnimationTick;
        }

        private void HandleAnimationTick(object sender, EventArgs e)
        {
            SpinnerRotate.Angle = (SpinnerRotate.Angle + 36) % 360;
        }

        private void HandleLoaded(object sender, RoutedEventArgs e)
        {
            const double offset = Math.PI;
            const double step = Math.PI * 2 / 10.0;

            SetPosition(C0, offset, 0.0, step);
            SetPosition(C1, offset, 1.0, step);
            SetPosition(C2, offset, 2.0, step);
            SetPosition(C3, offset, 3.0, step);
            SetPosition(C4, offset, 4.0, step);
            SetPosition(C5, offset, 5.0, step);
            SetPosition(C6, offset, 6.0, step);
            SetPosition(C7, offset, 7.0, step);
            SetPosition(C8, offset, 8.0, step);
        }

        private void SetPosition(Ellipse ellipse, double offset,
            double posOffSet, double step)
        {
            ellipse.SetValue(Canvas.LeftProperty, 50.0
                + Math.Sin(offset + posOffSet * step) * 50.0);

            ellipse.SetValue(Canvas.TopProperty, 50
                + Math.Cos(offset + posOffSet * step) * 50.0);
        }

        private void HandleUnloaded(object sender, RoutedEventArgs e)
        {
            Stop();
        }

        private void HandleVisibleChanged(object sender,
            DependencyPropertyChangedEventArgs e)
        {
            bool isVisible = (bool)e.NewValue;

            if (isVisible)
                Start();
            else
                Stop();
        }
        #endregion  
    }
}

应用：

1  <Grid x:Name="gd_top_show" Grid.Row="0" Grid.RowSpan="3" Grid.Column="0" Grid.ColumnSpan="3" >
2             <local:LoadingWait x:Name="_loading" />
3         </Grid>
4 
5    xmlns:local="clr-namespace:空间l"

 

posted @ 2016-04-06 15:34  ants_double  阅读(245)  评论(0)  编辑  收藏  举报