有 WPF 打字机效果吗?

发布于 2024-09-14 01:07:20 字数 34 浏览 8 评论 0原文

WPF 中是否有与 Flash 打字机效果等效的东西?

Is there any equivalent to Flash's Typewriter effects in WPF?

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难忘№最初的完美 2024-09-21 01:07:20

好的,我成功了!

private void TypewriteTextblock(string textToAnimate, TextBlock txt, TimeSpan timeSpan)
    {
        Storyboard story = new Storyboard();
        story.FillBehavior = FillBehavior.HoldEnd;
        story.RepeatBehavior = RepeatBehavior.Forever;

        DiscreteStringKeyFrame discreteStringKeyFrame;
        StringAnimationUsingKeyFrames stringAnimationUsingKeyFrames = new StringAnimationUsingKeyFrames();
        stringAnimationUsingKeyFrames.Duration = new Duration(timeSpan);

        string tmp = string.Empty;
        foreach(char c in textToAnimate)
        {
            discreteStringKeyFrame = new DiscreteStringKeyFrame();
            discreteStringKeyFrame.KeyTime = KeyTime.Paced;
            tmp += c;
            discreteStringKeyFrame.Value = tmp;
            stringAnimationUsingKeyFrames.KeyFrames.Add(discreteStringKeyFrame);
        }
        Storyboard.SetTargetName(stringAnimationUsingKeyFrames, txt.Name);
        Storyboard.SetTargetProperty(stringAnimationUsingKeyFrames, new PropertyPath(TextBlock.TextProperty));
        story.Children.Add(stringAnimationUsingKeyFrames);

        story.Begin(txt);
    }

但是有没有办法让角色淡入呢?

OK I made it work!

private void TypewriteTextblock(string textToAnimate, TextBlock txt, TimeSpan timeSpan)
    {
        Storyboard story = new Storyboard();
        story.FillBehavior = FillBehavior.HoldEnd;
        story.RepeatBehavior = RepeatBehavior.Forever;

        DiscreteStringKeyFrame discreteStringKeyFrame;
        StringAnimationUsingKeyFrames stringAnimationUsingKeyFrames = new StringAnimationUsingKeyFrames();
        stringAnimationUsingKeyFrames.Duration = new Duration(timeSpan);

        string tmp = string.Empty;
        foreach(char c in textToAnimate)
        {
            discreteStringKeyFrame = new DiscreteStringKeyFrame();
            discreteStringKeyFrame.KeyTime = KeyTime.Paced;
            tmp += c;
            discreteStringKeyFrame.Value = tmp;
            stringAnimationUsingKeyFrames.KeyFrames.Add(discreteStringKeyFrame);
        }
        Storyboard.SetTargetName(stringAnimationUsingKeyFrames, txt.Name);
        Storyboard.SetTargetProperty(stringAnimationUsingKeyFrames, new PropertyPath(TextBlock.TextProperty));
        story.Children.Add(stringAnimationUsingKeyFrames);

        story.Begin(txt);
    }

But is there a way to have the characters fade in?

和我恋爱吧 2024-09-21 01:07:20

打字机效果是指逐个字母显示的字符串吗?

您可以使用 StringAnimationUsingKeyframes object,但是,您必须手动输入每个字符串值。

要自动创建此效果,您必须编写自己的动画对象,很可能是基于 StringAnimationBase 类。

By typewriter effects you mean the string being displayed letter by letter?

You can achieve similar effect with StringAnimationUsingKeyframes object, however, you would have to enter every string value manually.

To create this effect automatically, you would have to write your own animation object, most likely one based on StringAnimationBase class.

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