首页 > 解决方案 > 按钮缩放边界(条件)

问题描述

大家,我尝试缩放按钮的大小,代码工作正常,如果我只单击一次,但如果我连续单击多次按钮,按钮无法返回其原始大小。这是代码:

 private void ButtonSearchMedication_OnClick(object sender, RoutedEventArgs e)
    {


            //Assign variation of width in term of begin, end and duration
        DoubleAnimation widthAnimation  =new DoubleAnimation(ButtonSearchMedication.ActualWidth, ButtonSearchMedication.ActualWidth*0.8, new Duration(timeSpan:TimeSpan.FromSeconds(0.2)) );

        //Assign variation of height in term of begin, end and duration
        DoubleAnimation heightAnimation = new DoubleAnimation(ButtonSearchMedication.ActualHeight,ButtonSearchMedication.ActualHeight*0.8, new Duration(timeSpan:TimeSpan.FromSeconds(0.2)));

        //Assign properties to button
        ButtonSearchMedication.BeginAnimation(Button.WidthProperty,widthAnimation);
        ButtonSearchMedication.BeginAnimation(Button.HeightProperty,heightAnimation);
    }

私人无效ButtonSearchMedication_OnMouseLeave(对象发送者,MouseEventArgs e){

            DoubleAnimation widthAnimation = new DoubleAnimation(ButtonSearchMedication.ActualWidth, ButtonSearchMedication.ActualWidth*1.25,new Duration(timeSpan:TimeSpan.FromSeconds(0.2)));
            DoubleAnimation heightAnimation = new DoubleAnimation(ButtonSearchMedication.ActualHeight, ButtonSearchMedication.ActualHeight*1.25,new Duration(timeSpan:TimeSpan.FromSeconds(0.2)));
            ButtonSearchMedication.BeginAnimation(Button.WidthProperty,widthAnimation);
            ButtonSearchMedication.BeginAnimation(Button.HeightProperty,heightAnimation);
        }

我能做些什么来确保按钮的大小在每次 MouseLeave 后变为原来的大小吗?谢谢

标签: c#wpfdoubleanimation

解决方案


鼠标单击/鼠标离开并不真正匹配。您可以不点击就离开。

无论如何,这里给你一个开始是固定的代码:

const double _width = 200;
const double _height = 100;

void ButtonSearchMedication_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    var widthAnimation = new DoubleAnimation(_width * 0.8, TimeSpan.FromSeconds(0.2));
    var heightAnimation = new DoubleAnimation(_height * 0.8, TimeSpan.FromSeconds(0.2));
    buttonSearchMedication.BeginAnimation(WidthProperty, widthAnimation);
    buttonSearchMedication.BeginAnimation(HeightProperty, heightAnimation);
}

void ButtonSearchMedication_PreviewMouseLeftButtonUp(object sender, MouseEventArgs e)
{
    var widthAnimation = new DoubleAnimation(_width, TimeSpan.FromSeconds(0.2));
    var heightAnimation = new DoubleAnimation(_height, TimeSpan.FromSeconds(0.2));
    buttonSearchMedication.BeginAnimation(WidthProperty, widthAnimation);
    buttonSearchMedication.BeginAnimation(HeightProperty, heightAnimation);
}

我决定使用鼠标向下/向上事件,您可以将其更改为进入/离开或其他。

如您所见,大小是恒定的,并且动画仅使用to参数(这样在单击事件的情况下的多个操作不会堆叠)。如果按钮大小是动态的,那么您必须在开始动画之前检索并存储原始大小,可能通过使用另一个事件(例如鼠标输入)。


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