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所属分类：.NET技术
老板加薪！看我做的WPF Loading！！！
控件名：RingLoading
作者：WPFDevelopersOrg
原文链接： https://github.com/WPFDevelopersOrg/WPFDevelopers.Minimal
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框架使用大于等于
.NET40； -
Visual Studio 2022; -
项目使用 MIT 开源许可协议；
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老板觉得公司系统等待动画转圈太简单，所以需要做一个稍微好看点的，就有这篇等待RingLoading动画
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最外层使用Viewbox为父控件内部嵌套创建三组
Grid -> Ellipse 、 Border
分别给它们指定不同的Angle从左侧开始-135 225 54，做永久 Angle 动画； -
PART_Ring1.RotateTransform.Angle从
From -135到-495； -
PART_Ring2.RotateTransform.Angle从
From 225到-585； -
PART_Ring3.RotateTransform.Angle从
From -54到-315； -
如何绘制；
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对Ellipse的StrokeDashArray进行设置23 100就能达到效果；
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Border 做为圆设置 Effect 可实现阴影效果；
1）RingLoading.cs代码如下；
using System.Windows; using System.Windows.Controls; namespace WPFDevelopers.Controls { public class RingLoading : Control { // Using a DependencyProperty as the backing store for IsStart. This enables animation, styling, binding, etc... public static readonly DependencyProperty IsStartProperty = DependencyProperty.Register("IsStart", typeof(bool), typeof(RingLoading), new PropertyMetadata(default)); // Using a DependencyProperty as the backing store for ProgressValue. This enables animation, styling, binding, etc... public static readonly DependencyProperty ProgressValueProperty = DependencyProperty.Register("ProgressValue", typeof(double), typeof(RingLoading), new PropertyMetadata(0d, OnProgressValueChangedCallBack)); // Using a DependencyProperty as the backing store for Progress. This enables animation, styling, binding, etc... internal static readonly DependencyProperty ProgressProperty = DependencyProperty.Register("Progress", typeof(string), typeof(RingLoading), new PropertyMetadata(default)); // Using a DependencyProperty as the backing store for Maximum. This enables animation, styling, binding, etc... public static readonly DependencyProperty MaximumProperty = DependencyProperty.Register("Maximum", typeof(double), typeof(RingLoading), new PropertyMetadata(100d, OnMaximumPropertyChangedCallBack)); // Using a DependencyProperty as the backing store for Description. This enables animation, styling, binding, etc... public static readonly DependencyProperty DescriptionProperty = DependencyProperty.Register("Description", typeof(string), typeof(RingLoading), new PropertyMetadata(default)); static RingLoading() { DefaultStyleKeyProperty.OverrideMetadata(typeof(RingLoading), new FrameworkPropertyMetadata(typeof(RingLoading))); } public bool IsStart { get => (bool)GetValue(IsStartProperty); set => SetValue(IsStartProperty, value); } public double ProgressValue { get => (double)GetValue(ProgressValueProperty); set => SetValue(ProgressValueProperty, value); } internal string Progress { get => (string)GetValue(ProgressProperty); set => SetValue(ProgressProperty, value); } public double Maximum { get => (double)GetValue(MaximumProperty); set => SetValue(MaximumProperty, value); } public string Description { get => (string)GetValue(DescriptionProperty); set => SetValue(DescriptionProperty, value); } private static void OnProgressValueChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e) { if (!(d is RingLoading control)) return; if (!double.TryParse(e.NewValue?.ToString(), out var value)) return; var progress = value / control.Maximum; control.SetCurrentValue(ProgressProperty, progress.ToString("P0")); } private static void OnMaximumPropertyChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs e) { if (!(d is RingLoading control)) return; if (!double.TryParse(e.NewValue?.ToString(), out var maxValue)) return; if (maxValue <= 0) return; var progress = control.ProgressValue / maxValue; control.SetCurrentValue(ProgressProperty, progress.ToString("P0")); } } } 2）RingLoading.xaml代码如下；
<Style TargetType="controls:RingLoading" BasedOn="{StaticResource ControlBasicStyle}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="controls:RingLoading"> <ControlTemplate.Resources> <Storyboard x:Key="PART_Resource_Storyboard" RepeatBehavior="Forever"> <DoubleAnimation To="-495" Duration="0:0:1.5" Storyboard.TargetName="PART_Ring1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)"/> <DoubleAnimation To="585" Duration="0:0:1.5" Storyboard.TargetName="PART_Ring2" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)"/> <DoubleAnimation To="-315" Duration="0:0:1.5" Storyboard.TargetName="PART_Ring3" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)"/> </Storyboard> </ControlTemplate.Resources> <Grid> <Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <Viewbox HorizontalAlignment="Center" VerticalAlignment="Center" > <Border Padding="10" Width="100" Height="100" > <Grid> <Grid x:Name="PART_Ring1" Width="60" Height="60" HorizontalAlignment="Center" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5"> <Grid.RenderTransform> <TransformGroup> <ScaleTransform/> <SkewTransform/> <RotateTransform Angle="-135"/> <TranslateTransform/> </TransformGroup> </Grid.RenderTransform> <Ellipse Stroke="Red" StrokeThickness="2" StrokeDashArray="23 100" RenderTransformOrigin="0.5,0.5"/> <Border Width="10" Height="10" CornerRadius="10" Background="Red" HorizontalAlignment="Right" Margin="0,0,-4,0"> <Border.Effect> <DropShadowEffect BlurRadius="10" ShadowDepth="0" Color="Red"/> </Border.Effect> </Border> </Grid> <Grid x:Name="PART_Ring2" Width="60" Height="60" HorizontalAlignment="Left" VerticalAlignment="Bottom" RenderTransformOrigin="0.5,0.5"> <Grid.RenderTransform> <TransformGroup> <ScaleTransform/> <SkewTransform/> <RotateTransform Angle="225"/> <TranslateTransform/> </TransformGroup> </Grid.RenderTransform> <Ellipse Stroke="Purple" StrokeThickness="2" StrokeDashArray="23 100"/> <Border Width="10" Height="10" CornerRadius="10" Background="Purple" VerticalAlignment="Bottom" HorizontalAlignment="Center" Margin="0,0,0,-4"> <Border.Effect> <DropShadowEffect BlurRadius="10" ShadowDepth="0" Color="Purple"/> </Border.Effect> </Border> </Grid> <Grid x:Name="PART_Ring3" Width="60" Height="60" HorizontalAlignment="Right" VerticalAlignment="Bottom" RenderTransformOrigin="0.5,0.5"> <Grid.RenderTransform> <TransformGroup> <ScaleTransform/> <SkewTransform/> <RotateTransform Angle="45"/> <TranslateTransform/> </TransformGroup> </Grid.RenderTransform> <Ellipse Stroke="#0fb8b2" StrokeThickness="2" StrokeDashArray="23 100"/> <Border Width="10" Height="10" CornerRadius="10" Background="#0fb8b2" HorizontalAlignment="Right" Margin="0,0,-4,0"> <Border.Effect> <DropShadowEffect BlurRadius="10" ShadowDepth="0" Color="#0fb8b2"/> </Border.Effect> </Border> </Grid> </Grid> </Border> </Viewbox> <StackPanel Grid.Row="1" Grid.ColumnSpan="2" Margin="10"> <TextBlock HorizontalAlignment="Center" Text="Loading..." Margin="0,0,0,15"/> <TextBlock HorizontalAlignment="Center" Text="{TemplateBinding Description}" Margin="0,0,0,15"/> <TextBlock HorizontalAlignment="Center" Text="{TemplateBinding Progress}" FontSize="{StaticResource TitleFontSize}" FontWeight="Bold"/> </StackPanel> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsStart" Value="True"> <Trigger.EnterActions> <BeginStoryboard Storyboard="{StaticResource PART_Resource_Storyboard}" x:Name="PART_BeginStoryboard"/> </Trigger.EnterActions> <Trigger.ExitActions> <StopStoryboard BeginStoryboardName="PART_BeginStoryboard"/> </Trigger.ExitActions> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> 3）RingLoadingExample.xaml代码如下；
<UserControl x:Class="WPFDevelopers.Samples.ExampleViews.RingLoadingExample" 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:wpfdev="https://github.com/WPFDevelopersOrg/WPFDevelopers" xmlns:local="clr-namespace:WPFDevelopers.Samples.ExampleViews" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"> <Grid> <wpfdev:RingLoading IsStart="true" Width="400" Height="400" Description="WPFDevelopers" Foreground="Black" ProgressValue="50"/> </Grid> </UserControl> RingLoading|Github
RingLoading|码云
RingLoading.xaml|Github
RingLoading.xaml|码云
