这可能与动画有关。我有一个WPF控件,其宽度和高度我通过几个不同的故事板动画。我创建了故事板,然后在它们上面调用Begin()。我提供了故事板如下图所示的代码。
我想在某个事件(例如窗口调整大小)上重新评估控件大小,以便它与动画的值不同。我尝试通过设置我的控件的Width
和Height
属性手动(在动画运行后)在SizeChanged上处理此问题。调试器显示未设置这些值(原始值保持不变)。
当我通过Snoop检查WPF时,Width和Height行以桃色/橙色突出显示并尝试再次通过它设置值不会持续存在(当我聚焦时会显示原始值。我的猜测是我的动画以某种方式覆盖了对属性的手动更改,但我不确定这是真的还是如何解决它。
故事板类
public class MyAnimationClass
{
private Storyboard _myStoryboard;
private DoubleAnimation _animation1;
private DoubleAnimation _animation2;
private DoubleAnimation _animation3;
private void InitializeStoryboard()
{
_myStoryboard = CreateMyStoryboard(out _animation1, out _animation2, out _animation3);
}
private Storyboard CreateMyStoryboard(out DoubleAnimation animation1, out DoubleAnimation animation2, out DoubleAnimation animation3)
{
var myStoryboard = new Storyboard();
// create animations
animation1 = new DoubleAnimation { Duration = new TimeSpan(0, 0, 0, 0, 250), From = 0, To = 0 };
animation2 = new DoubleAnimation { BeginTime = new TimeSpan(), Duration = new TimeSpan(0, 0, 0, 0, 250), From = 35, To = 35 };
animation3 = new DoubleAnimation { BeginTime = new TimeSpan(0, 0, 0, 0, 250), Duration = new TimeSpan(0, 0, 0, 0, 250), From = 35, To = 0 };
Storyboard.SetTargetProperty(animation1, new PropertyPath(FrameworkElement.WidthProperty));
Storyboard.SetTargetProperty(animation2, new PropertyPath(FrameworkElement.HeightProperty));
Storyboard.SetTargetProperty(animation3, new PropertyPath(FrameworkElement.HeightProperty));
myStoryboard.Children.Add(animation1);
myStoryboard.Children.Add(animation2);
myStoryboard.Children.Add(animation3);
return myStoryboard;
}
public void Animate(Control controlToAnimate)
{
// ....
var finalWidth = CalculateFinalWidth();
var finalHeight = CalculateFinalHeight();
_animation1.To = finalWidth;
_animation3.To = finalHeight;
_myStoryboard.Begin(controlToAnimate);
}
}
当我想为某些内容制作动画时,我会在Animate()
类的实例上调用MyAnimationClass
。
思想?
答案 0 :(得分:2)
这最终是一个非常简单的修复。由于FillBehavior
控制了属性值,因此值没有变化。但是,简单地将其更改为FillBehavior.Stop
并没有解决我的问题,因为当我的非动画代码设置宽度/高度时,下次我的动画运行它会动画到我想要的宽度/高度然后默认回到设定高度。这是通过在计算之后和动画之前设置控件的宽度/高度来解决的:
public void Animate(Control controlToAnimate)
{
// ....
var finalWidth = CalculateFinalWidth();
var finalHeight = CalculateFinalHeight();
// set values here so after animation they stay
controlToAnimate.Width = finalWidth;
controlToAnimate.Height = finalHeight;
_animation1.To = finalWidth;
_animation3.To = finalHeight;
_myStoryboard.Begin(controlToAnimate);
}