WPF自定義控制元件之訊息提示-有解無憂

創建訊息提示控制元件

internal class Message : ContentControl
    {
        public int Time { get; set; }

        [Bindable(true)]
        public MessageType MessageType { get { return (MessageType)GetValue(MessageTypeProperty); } set { SetValue(MessageTypeProperty, value); } }
        public static readonly DependencyProperty MessageTypeProperty = DependencyProperty.Register("MessageType", typeof(MessageType), typeof(Message), new PropertyMetadata(default(MessageType)));

        internal Message()
        {
            Loaded += Message_Loaded;
        }

        private async void Message_Loaded(object sender, System.Windows.RoutedEventArgs e)
        {
            if (Parent is MessageHost host)
            {
                await Task.Delay(Time);
                host.Items.Remove(this);
            }
        }
    }

訊息提示控制元件

<Style x:Key="MessageStyle" TargetType="xy:Message">
        <Setter Property="MinHeight" Value="50" />
        <Setter Property="MinWidth" Value="200" />
        <Setter Property="IsHitTestVisible" Value="false" />
        <Setter Property="HorizontalAlignment" Value="Center" />
        <Setter Property="VerticalContentAlignment" Value="Center" />
        <Setter Property="TextBlock.TextWrapping" Value="WrapWithOverflow" />
        <Setter Property="TextBlock.TextTrimming" Value="CharacterEllipsis" />
        <Setter Property="Margin" Value="0,4" />
        <Setter Property="Panel.ZIndex" Value="99" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="xy:Message">
                    <ControlTemplate.Resources>
                        <Storyboard x:Key="MessageStoryboard">
                            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="TranslateTransform" Storyboard.TargetProperty="Y">
                                <EasingDoubleKeyFrame KeyTime="0" Value="-40" />
                                <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0">
                                    <EasingDoubleKeyFrame.EasingFunction>
                                        <CircleEase EasingMode="EaseOut" />
                                    </EasingDoubleKeyFrame.EasingFunction>
                                </EasingDoubleKeyFrame>
                            </DoubleAnimationUsingKeyFrames>
                            <DoubleAnimation
                                Storyboard.TargetName="TransitionBody"
                                Storyboard.TargetProperty="Opacity"
                                From="0"
                                To="1"
                                Duration="0:0:0.5" />
                        </Storyboard>
                    </ControlTemplate.Resources>
                    <Grid
                        x:Name="TransitionBody"
                        Margin="1"
                        Opacity="0"
                        RenderTransformOrigin="0.5,0.5">
                        <Grid.RenderTransform>
                            <TransformGroup>
                                <TranslateTransform x:Name="TranslateTransform" />
                            </TransformGroup>
                        </Grid.RenderTransform>
                        <Border Background="{TemplateBinding Background}" CornerRadius="5">
                            <Border.Effect>
                                <DropShadowEffect Opacity="0.2" ShadowDepth="0" />
                            </Border.Effect>
                        </Border>
                        <Grid Margin="1,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="auto" />
                                <ColumnDefinition />
                            </Grid.ColumnDefinitions>
                            <Border
                                x:Name="icon_background"
                                Width="20"
                                Height="20"
                                Margin="10,10,5,10">
                                <Path x:Name="icon" Stretch="Fill" />
                            </Border>
                            <ContentPresenter
                                Grid.Column="1"
                                Margin="5,10"
                                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                        </Grid>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="MessageType" Value="Default">
                            <Setter Property="Background" Value="White" />
                            <Setter TargetName="icon_background" Property="Visibility" Value="Collapsed" />
                        </Trigger>
                        <Trigger Property="MessageType" Value="Error">
                            <Setter Property="Background" Value="White" />
                            <Setter TargetName="icon" Property="Fill" Value="#FF5722" />
                            <Setter TargetName="icon" Property="Data" Value="M512 0C229.23 0 0 229.23 0 512s229.23 512 512 512c282.768 0 512-229.23 512-512C1024 229.23 794.77 0 512 0zM746.76 656.252c7.808 7.808 7.806 20.472 0.002 28.284l-62.228 62.224c-7.808 7.808-20.47 7.814-28.286 0.002L512 602.51l-144.25 144.25c-7.81 7.812-20.474 7.808-28.284 0l-62.226-62.224c-7.81-7.808-7.812-20.472 0-28.284L421.492 512l-144.25-144.25c-7.81-7.808-7.81-20.474 0-28.284l62.226-62.224c7.81-7.812 20.474-7.81 28.284 0L512 421.49l144.252-144.25c7.806-7.812 20.47-7.81 28.282 0l62.226 62.224c7.806 7.812 7.808 20.474 0 28.284L602.51 512 746.76 656.252z" />
                        </Trigger>
                        <Trigger Property="MessageType" Value="Success">
                            <Setter Property="Background" Value="White" />
                            <Setter TargetName="icon" Property="Fill" Value="#5FB878" />
                            <Setter TargetName="icon" Property="Data" Value="M510.107082 0C228.488568 0 0.191459 228.297109 0.191459 509.913817 0.191459 791.530527 228.488568 1019.827635 510.107082 1019.827635 791.725594 1019.827635 1020.017285 791.530527 1020.017285 509.913817 1020.017285 228.297109 791.725594 0 510.107082 0L510.107082 0ZM410.902284 770.518774 409.764366 769.377244 408.622835 770.518774 168.529307 530.430664 248.958453 449.997904 409.764366 610.798397 771.252096 249.310666 851.681244 329.739812 410.902284 770.518774 410.902284 770.518774Z" />
                        </Trigger>
                        <Trigger Property="MessageType" Value="Warning">
                            <Setter Property="Background" Value="White" />
                            <Setter TargetName="icon" Property="Fill" Value="#FFB800" />
                            <Setter TargetName="icon" Property="Data" Value="M512 0C229.254842 0 0.010628 229.244214 0.010628 511.989372c0 282.766414 229.244214 512.010628 511.989372 512.010628 282.766414 0 511.989372-229.244214 511.989372-512.010628C1024.010628 229.244214 794.78767 0 512 0zM580.146217 804.23589l-136.271178 0L443.875039 687.626362l136.271178 0L580.146217 804.23589zM580.146217 591.443695l-136.271178 0L443.875039 219.76411l136.271178 0L580.146217 591.443695z" />
                        </Trigger>
                        <EventTrigger RoutedEvent="Loaded" SourceName="TransitionBody">
                            <EventTrigger.Actions>
                                <BeginStoryboard Storyboard="{StaticResource MessageStoryboard}" />
                            </EventTrigger.Actions>
                        </EventTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style BasedOn="{StaticResource MessageStyle}" TargetType="xy:Message" />

訊息提示控制元件樣式

public enum MessageType
    {
        [Description("默認")]
        Default,

        [Description("成功")]
        Success,

        [Description("警告")]
        Warning,

        [Description("錯誤")]
        Error
    }

訊息型別列舉

創建訊息提示控制元件容器

public class MessageHost : System.Windows.Controls.ItemsControl
    {
        public string Token { get { return (string)GetValue(TokenProperty); } set { SetValue(TokenProperty, value); } }

        public static readonly DependencyProperty TokenProperty = DependencyProperty.Register("Token", typeof(string), typeof(MessageHost), new PropertyMetadata(OnTokenChanged));

        private static void OnTokenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if(d is MessageHost host)
            {
                var token = e.NewValue.ToString();
                if (MessageHosts.ContainsKey(token))
                {
                    MessageHosts.Remove(token);
                }
                MessageHosts.Add(token, host);
            }
        }

        protected override bool IsItemItsOwnContainerOverride(object item)
        {
            return item is Message;
        }

        protected override DependencyObject GetContainerForItemOverride()
        {
            return new Message();
        }
    }

訊息提示控制元件容器

<Style x:Key="MessageHostStyle" TargetType="xy:MessageHost">
        <Setter Property="Panel.ZIndex" Value="999" />
    </Style>
    <Style BasedOn="{StaticResource MessageHostStyle}" TargetType="xy:MessageHost" />

訊息提示控制元件容器樣式

創建訊息通知類

public class MessageManage
    {
        internal static Dictionary<string, MessageHost> MessageHosts { get; set; } = MessageHosts ?? new Dictionary<string, MessageHost>();

        public static void Default(string message, string token = null, int time = 3000)
        {
            Show(message, MessageType.Default, token, time);
        }

        public static void Success(string message, string token = null, int time = 3000)
        {
            Show(message, MessageType.Success, token, time);
        }

        public static void Warning(string message, string token = null, int time = 3000)
        {
            Show(message, MessageType.Warning, token, time);
        }

        public static void Error(string message, string token = null, int time = 3000)
        {
            Show(message, MessageType.Error, token, time);
        }

        private static void Show(string message, MessageType messageType, string token, double time)
        {
            if (!MessageHosts.ContainsKey(token)) return;
            var messageHost = MessageHosts[token];
            messageHost.Dispatcher.BeginInvoke( (Action)(() =>
            {
                messageHost.Items.Add(new Message() { MessageType = messageType, Content = message, Time = time, Uid = Guid.NewGuid().ToString() });
            }));
        }
    }

訊息通知

使用示例：

在app.xaml中引入資源

<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/Demo.UI;component/Themes/Defaults.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>

MainWindow.xaml

<Grid>
        <Button
            Width="100"
            Height="50"
            Content="測驗" Click="Button_Click" />
        <xy:MessageHost Margin="0,24,0,0" Token="MainMessageToken" />
    </Grid>

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageManage.Success("點擊了測驗", "MainmessageToken"); 
　　　　　} 
　　 }

效果：

通俗點講就是在想要擁有提示的頁面添加一個容器，容器中塞入訊息提示控制元件，訊息提示控制元件在指定時間之后從容器中移除；

MessageManage類通過token進行查找到指定容器進行塞入；

也可以全域使用一個訊息容器進行提示；根據需求進行改造，

本文來自博客園，作者：阿金啊，轉載請注明原文鏈接：https://www.cnblogs.com/fengxinyuan/p/16908940.html

轉載請註明出處，本文鏈接：https://www.uj5u.com/net/536753.html

標籤：WPF

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