【原】WPF自定义用户控件风扇

先看静态效果图：

自定义用户控件代码如下：

<UserControl x:Name="userControl" x:Class="WpfControl.UserControls.XFan"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas./markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:WpfControl.UserControls"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800" RenderTransformOrigin="0.5,0.5">
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="UserControl.Loaded">
            <BeginStoryboard>
                <Storyboard>
                    <DoubleAnimationUsingKeyFrames Storyboard.TargetName="path1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" RepeatBehavior="Forever">
                        <EasingDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                        <EasingDoubleKeyFrame KeyTime="00:00:01" Value="360"/>
                    </DoubleAnimationUsingKeyFrames>
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </UserControl.Triggers>

    <Grid>
        <Border Canvas.Left="52" Canvas.Top="-38">
            <Viewbox Width="105" Height="105" RenderTransformOrigin="0.5,0.5">
                <Viewbox.RenderTransform>
                    <TransformGroup>
                        <RotateTransform Angle="20" x:Name="rt"></RotateTransform>
                        <ScaleTransform ScaleY="0.25"></ScaleTransform>
                    </TransformGroup>
                </Viewbox.RenderTransform>
                <Path x:Name="path1" Stretch="Fill" Data="M261.851429 528.822857c-43.885714-24.868571-84.845714-23.405714-121.417143 5.851429-35.108571 26.331429-49.737143 62.902857-43.885715 106.788571 5.851429 38.034286 19.017143 74.605714 40.96 108.251429 21.942857 35.108571 46.811429 59.977143 76.068572 74.605714 78.994286 40.96 147.748571 29.257143 207.725714-35.108571 19.017143-20.48 33.645714-43.885714 46.811429-73.142858 14.628571-32.182857 23.405714-61.44 24.868571-90.697142 0-14.628571 7.314286-21.942857 19.017143-21.942858s19.017143 5.851429 24.868571 16.091429c17.554286 51.2 14.628571 99.474286-10.24 143.36-24.868571 43.885714-21.942857 84.845714 4.388572 119.954286 26.331429 35.108571 62.902857 49.737143 106.788571 42.422857 38.034286-5.851429 74.605714-19.017143 108.251429-40.96 35.108571-21.942857 59.977143-46.811429 74.605714-76.068572 40.96-78.994286 29.257143-147.748571-36.571428-206.262857-20.48-19.017143-43.885714-35.108571-73.142858-48.274285-32.182857-14.628571-61.44-23.405714-90.697142-24.868572-14.628571 0-21.942857-7.314286-21.942858-19.017143s5.851429-20.48 17.554286-23.405714c20.48-7.314286 40.96-11.702857 62.902857-11.702857 27.794286 0 54.125714 7.314286 78.994286 20.48 43.885714 24.868571 84.845714 23.405714 121.417143-4.388572 35.108571-26.331429 49.737143-62.902857 43.885714-106.788571-5.851429-38.034286-19.017143-74.605714-40.96-108.251429-21.942857-35.108571-46.811429-59.977143-76.068571-74.605714-78.994286-40.96-147.748571-29.257143-207.725715 35.108572-19.017143 20.48-33.645714 45.348571-46.811428 73.142857-14.628571 32.182857-23.405714 62.902857-24.868572 90.697143 0 13.165714-7.314286 20.48-19.017142 21.942857s-20.48-5.851429-24.868572-16.091429c-7.314286-20.48-10.24-40.96-10.24-64.365714 0-27.794286 7.314286-54.125714 20.48-78.994286 24.868571-43.885714 21.942857-84.845714-4.388571-119.954286-26.331429-35.108571-61.44-49.737143-105.325715-43.885714-38.034286 5.851429-74.605714 19.017143-108.251428 40.96-35.108571 21.942857-59.977143 46.811429-76.068572 76.068572-40.96 78.994286-29.257143 147.748571 36.571429 207.725714 20.48 19.017143 45.348571 35.108571 73.142857 48.274286 32.182857 14.628571 61.44 21.942857 90.697143 23.405714 14.628571 0 21.942857 7.314286 21.942857 19.017143s-5.851429 20.48-17.554286 24.868571c-49.737143 17.554286-98.011429 14.628571-141.897142-10.24m279.405714-46.811428c8.777143 8.777143 11.702857 17.554286 11.702857 29.257142s-4.388571 21.942857-11.702857 30.72c-8.777143 7.314286-17.554286 11.702857-29.257143 11.702858s-21.942857-4.388571-30.72-11.702858c-8.777143-8.777143-11.702857-19.017143-11.702857-30.72s4.388571-21.942857 11.702857-29.257142c8.777143-8.777143 19.017143-13.165714 30.72-13.165715 11.702857 1.462857 20.48 4.388571 29.257143 13.165715z" Fill="#EEE" RenderTransformOrigin="0.5,0.5">
                    <Path.RenderTransform>
                        <TransformGroup>
                            <ScaleTransform/>
                            <SkewTransform/>
                            <RotateTransform/>
                            <TranslateTransform/>
                        </TransformGroup>
                    </Path.RenderTransform>
                </Path>
            </Viewbox>
        </Border>
    </Grid>
</UserControl>

• path为风扇叶的绘制路径，大可不必自行绘制，可通过矢量图标（相应的矢量图标站点找到对应的矢量图进行相应的修改即可）的路径得到。

• UserControl.Triggers作用是为了启动后即可呈现动画。如此，只需要window中添加了控件即可看到fan转动起来了。如下

在窗体中引用如下：

<Window x:Class="WpfControl.TestWindow2"
        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./markup-compatibility/2006"
        xmlns:uctrl="clr-namespace:WpfControl.UserControls"
        mc:Ignorable="d"
        Title="Test" Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <uctrl:XFan Grid.Column="2" Width="100" Height="100"/>
    </Grid>
</Window>

启动后如下：