我想做的是让我的控件“脉动”(例如放大一点,然后缩小一点,然后回到正常大小)。下面的代码正是我想要的,但似乎应该有一个更简单的方法。它必须在代码隐藏中完成,因为这是我们大多数控件派生自的抽象类。我对动画控制和 Storyboard没有太多经验。
所以具体来说,我的问题是,是否有比以下方法更简单的方法来获得所需的结果(同时仍在代码隐藏中完成)?
public void Pulse()
{
var storyboard = new Storyboard
{
FillBehavior = FillBehavior.Stop,
RepeatBehavior = new RepeatBehavior(2)
};
double timeIncrement = .15;
double changePercent = 20;
var firstTime = TimeSpan.FromSeconds(timeIncrement);
var secondTime = TimeSpan.FromSeconds(timeIncrement * 3);
var thirdTime = TimeSpan.FromSeconds(timeIncrement * 4);
var scale = new ScaleTransform(1.0, 1.0);
RenderTransformOrigin = new Point(.5, .5);
RenderTransform = scale;
//enlarge
{
DoubleAnimation growX = new DoubleAnimation
{
Duration = firstTime,
To = 1 + changePercent
};
storyboard.Children.Add(growX);
Storyboard.SetTargetProperty(growX, new PropertyPath("RenderTransform.ScaleX"));
DoubleAnimation growY = new DoubleAnimation
{
Duration = firstTime,
To = 1 + changePercent
};
storyboard.Children.Add(growY);
Storyboard.SetTargetProperty(growY, new PropertyPath("RenderTransform.ScaleY"));
}
//shrink
{
DoubleAnimation shrinkX = new DoubleAnimation
{
Duration = secondTime,
To = 1 - changePercent
};
storyboard.Children.Add(shrinkX);
Storyboard.SetTargetProperty(shrinkX, new PropertyPath("RenderTransform.ScaleX"));
DoubleAnimation shrinkY = new DoubleAnimation
{
Duration = secondTime,
To = 1 - changePercent
};
storyboard.Children.Add(shrinkY);
Storyboard.SetTargetProperty(shrinkY, new PropertyPath("RenderTransform.ScaleY"));
}
//back to normal
{
DoubleAnimation normX = new DoubleAnimation
{
Duration = thirdTime,
To = 1
};
storyboard.Children.Add(normX);
Storyboard.SetTargetProperty(normX, new PropertyPath("RenderTransform.ScaleX"));
DoubleAnimation normY = new DoubleAnimation
{
Duration = thirdTime,
To = 1
};
storyboard.Children.Add(normY);
Storyboard.SetTargetProperty(normY, new PropertyPath("RenderTransform.ScaleY"));
}
BeginStoryboard(storyboard, HandoffBehavior.SnapshotAndReplace, false);
}
最佳答案
您也许可以通过将增长/收缩逻辑移至其自己的方法中来稍微简化事情。这减少了重复并提供了潜在的更可重用的代码粗粒。
public void Pulse()
{
var storyboard = new Storyboard
{
FillBehavior = FillBehavior.Stop,
RepeatBehavior = new RepeatBehavior(2)
};
double timeIncrement = .15;
double growPercent = 20;
double shrinkPercent = -20;
var firstTime = TimeSpan.FromSeconds(timeIncrement);
var secondTime = TimeSpan.FromSeconds(timeIncrement * 3);
var thirdTime = TimeSpan.FromSeconds(timeIncrement * 4);
var scale = new ScaleTransform(1.0, 1.0);
RenderTransformOrigin = new Point(.5, .5);
RenderTransform = scale;
storyboard = AddSizeChange(firstTime, growPercent, storyboard);
storyboard = AddSizeChange(secondTime, shrinkPercent, storyboard);
storyboard = AddSizeChange(thirdTime, growPercent, storyboard);
BeginStoryboard(storyboard, HandoffBehavior.SnapshotAndReplace, false);
}
public Storyboard AddSizeChange(TimeSpan animTime, double changePercent, Storyboard storyboard)
{
DoubleAnimation growX = new DoubleAnimation
{
Duration = animTime,
To = 1 + changePercent
};
storyboard.Children.Add(growX);
Storyboard.SetTargetProperty(growX, new PropertyPath("RenderTransform.ScaleX"));
DoubleAnimation growY = new DoubleAnimation
{
Duration = animTime,
To = 1 + changePercent
};
storyboard.Children.Add(growY);
Storyboard.SetTargetProperty(growY, new PropertyPath("RenderTransform.ScaleY"));
return storyboard;
}
关于c# - 制作用户控制脉冲,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31924102/