用于WPF的Silverlight ChildWindow

Question

有没有可能在Silverlight中做一个像ChildWindow一样的ChildWindow，但是用在WPF上呢？我试图使Silverlight ChildWindow适应WPF，但遇到了转换的问题，并且无法设置弹出窗口的父窗口。我正在尝试做一些类似工作的东西，这样我就不必为弹出窗口向XAML添加代码。有什么想法吗？

Answer 1

这个类应该做你想做的事情：

public class SilverlightishPopup
{
    private Rectangle maskRectangle = new Rectangle { Fill = new SolidColorBrush(Colors.DarkGray), Opacity = 0.0 };

    public FrameworkElement Parent
    {
        get;
        set;
    }

    public FrameworkElement Content
    {
        get;
        set;
    }

    public SilverlightishPopup()
    {
        Button button = new Button();
        button.Width = 100;
        button.Height = 200;
        button.Content = "I am the popup!";

        button.Click += delegate { Close(); };

        Content = button;
    }

    public void Show()
    {
        Grid grid = GetRootGrid();

        if (grid != null)
        {
            DoubleAnimation opacityAnimation = new DoubleAnimation(0.5, new Duration(TimeSpan.FromSeconds(0.5)));

            Storyboard opacityBoard = new Storyboard();
            opacityBoard.Children.Add(opacityAnimation);

            Storyboard.SetTarget(opacityAnimation, maskRectangle);
            Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath("(Opacity)"));

            opacityBoard.Completed += delegate
            {
                ScaleTransform scaleTransform = new ScaleTransform(0.0, 0.0, Content.Width / 2.0, Content.Height / 2.0);
                Content.RenderTransform = scaleTransform;

                grid.Children.Add(Content);

                Storyboard scaleBoard = new Storyboard();

                DoubleAnimation scaleXAnimation = new DoubleAnimation(1.0, TimeSpan.FromSeconds(0.5));

                scaleBoard.Children.Add(scaleXAnimation);

                Storyboard.SetTarget(scaleXAnimation, Content);
                Storyboard.SetTargetProperty(scaleXAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleX)"));

                DoubleAnimation scaleYAnimation = new DoubleAnimation(1.0, TimeSpan.FromSeconds(0.5));

                scaleBoard.Children.Add(scaleYAnimation);

                Storyboard.SetTarget(scaleYAnimation, Content);
                Storyboard.SetTargetProperty(scaleYAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleY)"));

                scaleBoard.Begin();
            };

            opacityBoard.Begin();

            grid.Children.Add(maskRectangle);
        }
    }

    public void Close()
    {
        Grid grid = GetRootGrid();

        if (grid != null)
        {
            ScaleTransform scaleTransform = new ScaleTransform(1.0, 1.0, Content.Width / 2.0, Content.Height / 2.0);
            Content.RenderTransform = scaleTransform;

            Storyboard scaleBoard = new Storyboard();

            DoubleAnimation scaleXAnimation = new DoubleAnimation(0.0, TimeSpan.FromSeconds(0.5));

            scaleBoard.Children.Add(scaleXAnimation);

            Storyboard.SetTarget(scaleXAnimation, Content);
            Storyboard.SetTargetProperty(scaleXAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleX)"));

            DoubleAnimation scaleYAnimation = new DoubleAnimation(0.0, TimeSpan.FromSeconds(0.5));

            scaleBoard.Children.Add(scaleYAnimation);

            Storyboard.SetTarget(scaleYAnimation, Content);
            Storyboard.SetTargetProperty(scaleYAnimation, new PropertyPath("(UIElement.RenderTransform).(ScaleTransform.ScaleY)"));

            scaleBoard.Completed += delegate
            {
                DoubleAnimation opacityAnimation = new DoubleAnimation(0.5, 0.0, new Duration(TimeSpan.FromSeconds(0.5)));

                Storyboard opacityBoard = new Storyboard();
                opacityBoard.Children.Add(opacityAnimation);

                Storyboard.SetTarget(opacityAnimation, maskRectangle);
                Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath("(Opacity)"));

                opacityBoard.Completed += delegate
                {
                    grid.Children.Remove(maskRectangle);
                    grid.Children.Remove(Content);
                };

                opacityBoard.Begin();
            };

            scaleBoard.Begin();
        }
    }

    private Grid GetRootGrid()
    {
        FrameworkElement root = Parent;

        while (root is FrameworkElement && root.Parent != null)
        {
            FrameworkElement rootElement = root as FrameworkElement;

            if (rootElement.Parent is FrameworkElement)
            {
                root = rootElement.Parent as FrameworkElement;
            }
        }

        ContentControl contentControl = root as ContentControl;

        return contentControl.Content as Grid;
    }
}

只需将Parent属性设置为父窗口中的任何Framework元素(它将找到用掩码阻止它的窗口)，并将内容设置为您希望弹出的任何内容(当然，当您希望显示它时，还可以调用Show方法)。你必须自己想出弹出式包装器(即带有边框和调用close方法的close按钮的东西)，但这应该不难，而且显然要移除构造器中的占位符按钮(它只是为了向你展示它的外观)。

唯一的问题是它只能在有内容的窗口上工作(例如，在Silverlight中被命名为"LayoutRoot“的东西)是一个网格(当你创建一个新的WPF/Silverlight窗口/页面时，这是默认的)。我将它设置为适用于所有面板，但当与StackPanel或DockPanel一起使用时，它看起来很奇怪(不出所料)。如果对你不起作用，让我知道，我们会想出办法的。

如果您使用它，您可能可以使动画看起来更接近原始弹出窗口(可能使用一些缓动)。也许还有一种更好的方法来找到根，我只是匆匆想出了这个方法，但我认为它会起作用的(尽管同样，只有内容设置为网格的Contentcontrol )。

如果你有任何疑问/问题，请告诉我，我希望这能解决你的问题。

Answer 2

看一看BubbleBurst Sourcecode。GameOverView的功能完全符合您的要求。

Answer 3

只需从窗口派生并从父窗口调用ShowDialog即可。