WPF window 子窗口反馈效果(抖动/阴影渐变)

 当设置了owner的子窗口显示后,点击子窗口外部,需要一种反馈机制(反馈动画)。

实现:

1.触发源

每次点击子窗口外部,即母窗口时,事件捕捉如下

HwndSource hwndSource = PresentationSource.FromVisual(this.Owner) as HwndSource;//窗口过程

hwndSource?.AddHook(WndProc);

 也可以调用WindowInteropHelper,获取母窗口句柄。

var hwnd = new WindowInteropHelper(this.Owner).Handle;
if (hwnd != IntPtr.Zero)
{
  var hwndSource = HwndSource.FromHwnd(hwnd);
  hwndSource?.AddHook(WndProc);
}

事件中,启动动画

 private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
    {
         if (msg != 0x20) return IntPtr.Zero;
         if (lParam.ToInt32() == 0x201fffe) _storyboard?.Begin();
         return IntPtr.Zero;
    }

 

2.动画设置

窗口抖动 动画

复制代码
            var scaleXDoubleAnimation = new DoubleAnimationUsingKeyFrames();
            var scaleYDoubleAnimation = new DoubleAnimationUsingKeyFrames();

            scaleXDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0)),Value = 1.0});
            scaleXDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(100)),Value = 0.95});
            scaleXDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200)),Value = 1.0});

            scaleYDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0)),Value = 1.0});
            scaleYDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(100)),Value = 0.95});
            scaleYDoubleAnimation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200)),Value = 1.0});

            Storyboard.SetTarget(scaleXDoubleAnimation, window);
            Storyboard.SetTarget(scaleYDoubleAnimation, window);
            Storyboard.SetTargetProperty(scaleXDoubleAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleX)"));
            Storyboard.SetTargetProperty(scaleYDoubleAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleY)"));

            _storyboard = new Storyboard{Children =new TimelineCollection { scaleXDoubleAnimation, scaleYDoubleAnimation }};
复制代码

 设置后,点击窗口外部,子窗口唤醒时,会有窗口大小变化(抖动的效果)

 窗口阴影 动画

复制代码
            var animation = new DoubleAnimationUsingKeyFrames();

            animation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0)),Value = 0});
            animation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200)),Value = 50});
            animation.KeyFrames.Add(new EasingDoubleKeyFrame{KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(400)),Value = 0});
            
            Storyboard.SetTarget(animation, window);
            Storyboard.SetTargetProperty(animation, new PropertyPath("(FrameworkElement.Effect).(DropShadowEffect.BlurRadius)"));

            _storyboard = new Storyboard
            {
                Children = new TimelineCollection { animation }
            };
复制代码

 设置后,点击窗口外部,子窗口唤醒时,会有窗口外部阴影变化

 

关键字:模态窗口,窗口抖动,窗口阴影

posted @   唐宋元明清2188  阅读(1205)  评论(2编辑  收藏  举报
编辑推荐:
· 一个奇形怪状的面试题:Bean中的CHM要不要加volatile?
· [.NET]调用本地 Deepseek 模型
· 一个费力不讨好的项目,让我损失了近一半的绩效!
· .NET Core 托管堆内存泄露/CPU异常的常见思路
· PostgreSQL 和 SQL Server 在统计信息维护中的关键差异
阅读排行:
· DeepSeek “源神”启动!「GitHub 热点速览」
· 我与微信审核的“相爱相杀”看个人小程序副业
· 上周热点回顾(2.17-2.23)
· 如何使用 Uni-app 实现视频聊天(源码,支持安卓、iOS)
· C# 集成 DeepSeek 模型实现 AI 私有化(本地部署与 API 调用教程)
点击右上角即可分享
微信分享提示
哥伦布
01:11发布
哥伦布
01:11发布
8°
西北风
2级
空气质量
相对湿度
81%
今天
中雨
3°/15°
周四
大雨
2°/14°
周五
小雨
4°/10°