WPF+MVVM案例实战（二十一）- 制作一个侧边弹窗栏(AB类)

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1、案例效果

1、侧边栏分类

• A类 ：左侧弹出侧边栏
• B类 ：右侧弹出侧边栏
• C类 ：顶部弹出侧边栏
• D类 ：底部弹出侧边栏

2、AB类侧边弹窗实现

1.文件创建

打开项目 Wpf_Examples ,在Views 文件夹下创建窗体界面文件 PopPanelWindow.xaml 。如下所示：

2、样式代码与功能代码实现

1、弹出床的两种实现，一种是鼠标移上按钮就触发，点击弹窗面板关闭效果。第二种是 单击按钮弹出侧边栏，鼠标点击其他空白区域退出弹窗栏。这里我们把第一种做成右侧弹出栏，第二种做成左侧弹出栏。

PopPanelWindow.xaml 界面样式如下所示：

<Window x:Class="Wpf_Examples.Views.PopPanelWindow"
        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.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Wpf_Examples.Views"
        mc:Ignorable="d"
        Title="PopPanelWindow" Height="450" Width="600" Background="#2B2B2B">
    <Grid>
        <Button Width="250" Height="30" Content="鼠标移上按弹出右侧边栏">
            <Button.Triggers>
                <!--  用按钮的鼠标进入事件来触发进入动画  -->
                <EventTrigger RoutedEvent="MouseEnter">
                    <BeginStoryboard>
                        <!--  进入动画  -->
                        <Storyboard Storyboard.TargetName="border" Storyboard.TargetProperty="RenderTransform.X">
                            <DoubleAnimation From="120"
                                         To="0"
                                         Duration="0:0:1">
                                <DoubleAnimation.EasingFunction>
                                    <!--  设置缓动模式和振荡次数  -->
                                    <BackEase Amplitude="0.5" EasingMode="EaseOut" />
                                </DoubleAnimation.EasingFunction>
                            </DoubleAnimation>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Button.Triggers>
        </Button>
        <!--  侧边栏  -->
        <Border x:Name="border"
             Width="200"
             HorizontalAlignment="Right"
             Background="LightSkyBlue">
              <!--位移效果-->  
            <Border.RenderTransform>
                <TranslateTransform x:Name="tt" X="200" />
            </Border.RenderTransform>
            <Border.Effect>
                <DropShadowEffect Direction="205"
                               Opacity="0.6"
                               ShadowDepth="1"
                               Color="Black" />
            </Border.Effect>
            <Border.Triggers>
                <!--  鼠标的左键按下事件来触发退出动画  -->
                <EventTrigger RoutedEvent="MouseLeftButtonDown">
                    <BeginStoryboard>
                        <!--  退出动画  -->
                        <Storyboard Storyboard.TargetName="tt" Storyboard.TargetProperty="X">
                            <DoubleAnimation From="0"
                                          To="200"
                                          Duration="0:0:0.8" />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Border.Triggers>
        </Border>


        <Button Width="150" Height="30" Margin="0 80 0 0" Content="单击弹出左侧侧边栏" Click="Button_Click"/>

        <!--  左侧边栏  -->
        <Border x:Name="leftPanel"
                Width="200"
                HorizontalAlignment="Left"
                Background="LightSkyBlue"
                Visibility="Collapsed">
            <!--  位移效果  -->
            <Border.RenderTransform>
                <TranslateTransform x:Name="toRight" X="0" />
            </Border.RenderTransform>
            <Border.Effect>
                <DropShadowEffect Direction="225" Opacity="0.6" ShadowDepth="1" Color="Black" />
            </Border.Effect>
        </Border>

    </Grid>
</Window>

3、功能代码实现

PopPanelWindow.cs 按钮事件代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace Wpf_Examples.Views
{
    /// <summary>
    /// PopPanelWindow.xaml 的交互逻辑
    /// </summary>
    public partial class PopPanelWindow : Window
    {
        public PopPanelWindow()
        {
            InitializeComponent();
            // 注册窗口的鼠标点击事件
            this.MouseLeftButtonDown += PopPanelWindow_MouseLeftButtonDown;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            // 触发进入动画
            leftPanel.Visibility = Visibility.Visible;
            Storyboard enterStoryboard = new Storyboard();
            DoubleAnimation enterAnimation = new DoubleAnimation
            {
                From = 0,
                To = 200,
                Duration = TimeSpan.FromSeconds(1),
                EasingFunction = new BackEase { Amplitude = 0.5, EasingMode = EasingMode.EaseOut }
            };
            Storyboard.SetTarget(enterAnimation, toRight);
            Storyboard.SetTargetProperty(enterAnimation, new PropertyPath("X"));
            enterStoryboard.Children.Add(enterAnimation);
            enterStoryboard.Begin();
        }

        private void PopPanelWindow_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            // 检查点击的位置是否在侧边栏之外
            if (!leftPanel.IsMouseOver && leftPanel.Visibility == Visibility.Visible)
            {
                // 触发退出动画
                Storyboard exitStoryboard = new Storyboard();
                DoubleAnimation exitAnimation = new DoubleAnimation
                {
                    From = 200,
                    To = 0,
                    Duration = TimeSpan.FromSeconds(0.6)
                };
                Storyboard.SetTarget(exitAnimation, toRight);
                Storyboard.SetTargetProperty(exitAnimation, new PropertyPath("X"));
                exitStoryboard.Children.Add(exitAnimation);
                exitStoryboard.Completed += (s, ev) => leftPanel.Visibility = Visibility.Collapsed;
                exitStoryboard.Begin();
            }
        }
    }
}

3 运行效果

4、源代码获取

源代码是包含上下左右侧边弹出栏全部功能的。代码下载后直接运行即可。
CSDN下载链接：WPF实战案例系列-侧边弹窗等案例

原文地址：https://blog.csdn.net/qq_21419015/article/details/143469339

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