wpf 水波进度条用户控件

之前看公司web前端做了个圆形的水波纹进度条，就想用wpf 做一个，奈何自己太菜一直做不出来，在看过 “普通的地球人” 的 “

WPF实现三星手机充电界面博客之后我也来照葫芦画个瓢。

废话不多说先贴一下效果图

虽然样子 low 了些但是基本满足我的需求了，下面是代码

前端

<UserControl x:Class="WaveProgress.UserControl.WaveProgressControl"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

             xmlns:local="clr-namespace:WaveProgress.UserControl"

             mc:Ignorable="d"

             Height="150" Width="150" x:Name="wave_control">

    <UserControl.Resources>

        <Storyboard x:Key="WaterStoryboard">

            <PointAnimation Storyboard.TargetName="bs_Water" DesiredFrameRate="20" Storyboard.TargetProperty="Point1" From="90,60" To="90,90" Duration="00:00:2" AutoReverse="True" RepeatBehavior="Forever"></PointAnimation>

            <PointAnimation Storyboard.TargetName="bs_Water" DesiredFrameRate="20" Storyboard.TargetProperty="Point2" From="100,110" To="100,95" Duration="00:00:1.8" AutoReverse="True" RepeatBehavior="Forever"></PointAnimation>

        </Storyboard>

    </UserControl.Resources>

    <Grid Width="{Binding ElementName=wave_control,Path=Width}" Height="{Binding ElementName=wave_control,Path=Height}"

          Background="{Binding WaveProgressBackground,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">

        <Grid.Clip>

            <EllipseGeometry Center="75,75" RadiusX="75" RadiusY="75" ></EllipseGeometry>

        </Grid.Clip>

        <StackPanel Width="150" VerticalAlignment="Bottom">

            <Path Fill="{Binding WavePorgressBarColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" >

                <Path.Data>

                    <PathGeometry FillRule="EvenOdd" >

                        <PathFigure StartPoint="0,90" >

                            <BezierSegment x:Name="bs_Water" Point1="90,60" Point2="100,110" Point3="150,90"></BezierSegment>

                            <PolyLineSegment Points="150,100 0,100"></PolyLineSegment>

                        </PathFigure>

                    </PathGeometry>

                </Path.Data>

                <Path.Triggers>

                    <EventTrigger RoutedEvent="Path.Loaded">

                        <BeginStoryboard Storyboard="{StaticResource WaterStoryboard}"></BeginStoryboard>

                    </EventTrigger>

                </Path.Triggers>

            </Path>

            <Rectangle Height="{Binding WaveProgressHeight,UpdateSourceTrigger=PropertyChanged}" Fill="{Binding WavePorgressBarColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>

        </StackPanel>

        <Ellipse VerticalAlignment="Bottom" Width="150" Height="150" Stroke="{Binding WaveBorderBrush,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Fill="Transparent"

                 StrokeThickness="{Binding WaveBorderThickness,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>

        <TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="22" Foreground="{Binding TextColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">

            <Run Text="{Binding DisPlayValue,UpdateSourceTrigger=PropertyChanged}"></Run>

            <Run Text="%"></Run>

        </TextBlock>

    </Grid>

</UserControl>

后台

using System.Globalization;

using System.Windows;

using System.Windows.Media;

namespace WaveProgress.UserControl

{

    /// <summary>

    /// WaveProgressControl.xaml 的交互逻辑

    /// </summary>

    public partial class WaveProgressControl : System.Windows.Controls.UserControl

    {

        public WaveProgressControl()

        {

            InitializeComponent();

            this.DataContext = this;

        }

        public static readonly DependencyProperty WaveProgressBackgroundProperty = DependencyProperty.Register(

            "WaveProgressBackground", typeof(SolidColorBrush), typeof(WaveProgressControl), new PropertyMetadata(Brushes.White));

        /// <summary>

        /// 进度条背景色

        /// </summary>

        public SolidColorBrush WaveProgressBackground

        {

            get { return (SolidColorBrush) GetValue(WaveProgressBackgroundProperty); }

            set { SetValue(WaveProgressBackgroundProperty, value); }

        }

        public static readonly DependencyProperty WaveBorderBrushProperty = DependencyProperty.Register(

            "WaveBorderBrush", typeof(SolidColorBrush), typeof(WaveProgressControl), new PropertyMetadata(Brushes.Blue));

        /// <summary>

        /// 边框颜色

        /// </summary>

        public SolidColorBrush WaveBorderBrush

        {

            get { return (SolidColorBrush) GetValue(WaveBorderBrushProperty); }

            set { SetValue(WaveBorderBrushProperty, value); }

        }

        public static readonly DependencyProperty WaveBorderThicknessProperty = DependencyProperty.Register(

            "WaveBorderThickness", typeof(double), typeof(WaveProgressControl), new PropertyMetadata(2.0));

        /// <summary>

        /// 边框粗细

        /// </summary>

        public double WaveBorderThickness

        {

            get { return (double) GetValue(WaveBorderThicknessProperty); }

            set { SetValue(WaveBorderThicknessProperty, value); }

        }

        public static readonly DependencyProperty WavePorgressBarColorProperty = DependencyProperty.Register(

            "WavePorgressBarColor", typeof(SolidColorBrush), typeof(WaveProgressControl), new PropertyMetadata(Brushes.Red));

        /// <summary>

        /// 进度条颜色

        /// </summary>

        public SolidColorBrush WavePorgressBarColor

        {

            get { return (SolidColorBrush) GetValue(WavePorgressBarColorProperty); }

            set { SetValue(WavePorgressBarColorProperty, value); }

        }

        public static readonly DependencyProperty TextColorProperty = DependencyProperty.Register(

            "TextColor", typeof(SolidColorBrush), typeof(WaveProgressControl), new PropertyMetadata(Brushes.Black));

        /// <summary>

        /// 文字颜色

        /// </summary>

        public SolidColorBrush TextColor

        {

            get { return (SolidColorBrush) GetValue(TextColorProperty); }

            set { SetValue(TextColorProperty, value); }

        }

        public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(

            "Value", typeof(double), typeof(WaveProgressControl), new PropertyMetadata(default(double)));

        /// <summary>

        /// 当前进度

        /// </summary>

        public double Value

        {

            get { return (double) GetValue(ValueProperty); }

            set { SetValue(ValueProperty, value); }

        }

        public static readonly DependencyProperty MaxValueProperty = DependencyProperty.Register(

            "MaxValue", typeof(double), typeof(WaveProgressControl), new PropertyMetadata(default(double)));

        public double MaxValue

        {

            get { return (double) GetValue(MaxValueProperty); }

            set { SetValue(MaxValueProperty, value); }

        }

        public static readonly DependencyProperty DisPlayValueProperty = DependencyProperty.Register(

            "DisPlayValue", typeof(string), typeof(WaveProgressControl), new PropertyMetadata(""));

        public string DisPlayValue

        {

            get { return (string) GetValue(DisPlayValueProperty); }

            set { SetValue(DisPlayValueProperty, value); }

        }

        public static readonly DependencyProperty WaveProgressHeightProperty = DependencyProperty.Register(

            "WaveProgressHeight", typeof(double), typeof(WaveProgressControl), new PropertyMetadata(default(double)));

        /// <summary>

        /// 次属性不要手动设置

        /// </summary>

        public double WaveProgressHeight

        {

            get { return (double) GetValue(WaveProgressHeightProperty); }

            set { SetValue(WaveProgressHeightProperty, value); }

        }

        protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)

        {

            base.OnPropertyChanged(e);

            if (e.Property == ValueProperty)

            {

                double bl = Value / MaxValue;

                WaveProgressHeight =  * bl;

                DisPlayValue = (bl * ).ToString(CultureInfo.InvariantCulture);

            }

        }

    }

}

美中不足的是：

1、大小是我写死了的，因为里面那个水波是用path 写的是个固定的

2、仔细看中间有条白色的线（等有时间在解决吧）

学习到的知识：

1、学会用贝塞尔曲线，和它的动画

2、学会了Clip剪裁

3、看大佬的文章果然受益匪浅

附：解决有一条白线的问题

将水波纹进度条的边线设置为0，代码为：

<Path SnapsToDevicePixels="True"

                  Fill="{Binding WavePorgressBarColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"

                  Stroke="{Binding WavePorgressBarColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"

                  StrokeThickness="0">

                <Path.Data>

                    <PathGeometry FillRule="EvenOdd" >

                        <PathFigure StartPoint="0,90" >

                            <BezierSegment x:Name="bs_Water" Point1="90,60" Point2="100,110" Point3="150,90"></BezierSegment>

                            <PolyLineSegment Points="150,100 0,100"></PolyLineSegment>

                        </PathFigure>

                    </PathGeometry>

                </Path.Data>

                <Path.Triggers>

                    <EventTrigger RoutedEvent="Path.Loaded">

                        <BeginStoryboard Storyboard="{StaticResource WaterStoryboard}"></BeginStoryboard>

                    </EventTrigger>

                </Path.Triggers>

            </Path>

            <Rectangle SnapsToDevicePixels="True" Height="{Binding WaveProgressHeight,UpdateSourceTrigger=PropertyChanged}" Fill="{Binding WavePorgressBarColor,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>

将此代码直接覆盖原有代码即可（StackPanel 中的那两个控件）

附源码：https://github.com/t115liyanpeng/WaveProgress

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