简单的按钮动画按钮、简单、动画
我想学习 .NET 编程。作为我学习的一部分，我试图让上的按钮有一定的影响。这是工作......但并不像我想象的那样顺利！有没有更好的方式来做到这一点？预先感谢您！
我需要：
有3个按钮。 当您在其中一个悬停鼠标，它扩展，当你的鼠标从该按钮，返回到其初始大小。
私人无效button1_MouseHover（对象发件人，EventArgs的）
{
button1.BackColor = Color.White;
button1.Width = 130;
button1.BringToFront（）;
}
私人无效button1_MouseLeave（对象发件人，EventArgs的）
{
button1.BackColor = Color.Red;
button1.Width = 75;
}
私人无效button2_MouseHover（对象发件人，EventArgs的）
{
button2.BackColor = Color.Gray;
button2.Width = 130;
button2.BringToFront（）;
}
私人无效Form1_MouseLeave（对象发件人，EventArgs的）
{
button2.BackColor = Color.Red;
button2.Width = 75;
}
私人无效button3_MouseHover（对象发件人，EventArgs的）
{
button3.BackColor = Color.DimGray;
button3.Width = 130;
button3.BringToFront（）;
}
私人无效button3_MouseLeave（对象发件人，EventArgs的）
{
button3.BackColor = Color.Red;
button3.Width = 75;
}
解决方案
所以第一关，你不想做同样的事情3倍。创建一个方法来添加相应的处理程序按钮，然后只写了code的一次的处理任何给定的按钮。
请注意，您可以进入扩张/收缩蜱处理程序和使用 percentComplete 值来设置高度为好，移动的颜色沿着光谱（这将涉及的颜色一些数学做虽然）或改变按钮的任何其他方面。如果你的真正的动力去概括它，你可以将参数添加到动作＆LT的方法;双＆GT; 做一些事，以基于对象在给定的百分比进度。
公共无效AddAnimation（Button按钮）
{
VAR expandTimer =新System.Windows.Forms.Timer（）;
VAR contractTimer =新System.Windows.Forms.Timer（）;
expandTimer.Interval = 10; //可以调节，以确定刷新率
contractTimer.Interval = 10;
日期时间animationStarted = DateTime.Now;
// TODO更新适当或使其参数
时间跨度animationDuration = TimeSpan.FromMilliseconds（250）;
INT initialWidth = 75;
INT endWidth = 130;
button.MouseHover + =（_，参数）=＆GT;
{
contractTimer.Stop（）;
expandTimer.Start（）;
animationStarted = DateTime.Now;
button.BackColor = Color.DimGray;
};
button.MouseLeave + =（_，参数）=＆GT;
{
expandTimer.Stop（）;
contractTimer.Start（）;
animationStarted = DateTime.Now;
button.BackColor = Color.Red;
};
expandTimer.Tick + =（_，参数）=＆GT;
{
双percentComplete =（DateTime.Now - animationStarted）.Ticks
/（双）animationDuration.Ticks;
如果（percentComplete＆GT; = 1）
{
expandTimer.Stop（）;
}
其他
{
button.Width =（INT）（initialWidth +
（endWidth - initialWidth）* percentComplete）;
}
};
contractTimer.Tick + =（_，参数）=＆GT;
{
双percentComplete =（DateTime.Now - animationStarted）.Ticks
/（双）animationDuration.Ticks;
如果（percentComplete＆GT; = 1）
{
contractTimer.Stop（）;
}
其他
{
button.Width =（INT）（endWidth -
（endWidth - initialWidth）* percentComplete）;
}
};
}
I am trying to learn .NET programming. As a part of my learning, I tried to make some effects on buttons. It is working... but not as smooth as I imagined! Is there any better way to do this? Thank you in advance!
My need:
There are 3 buttons. When you hover the mouse over one of them, it expands and when you mouse out from that button, it returns to its initial size.
private void button1_MouseHover(object sender, EventArgs e)
{
button1.BackColor = Color.White;
button1.Width = 130;
button1.BringToFront();
}
private void button1_MouseLeave(object sender, EventArgs e)
{
button1.BackColor = Color.Red;
button1.Width = 75;
}
private void button2_MouseHover(object sender, EventArgs e)
{
button2.BackColor = Color.Gray;
button2.Width = 130;
button2.BringToFront();
}
private void Form1_MouseLeave(object sender, EventArgs e)
{
button2.BackColor = Color.Red;
button2.Width = 75;
}
private void button3_MouseHover(object sender, EventArgs e)
{
button3.BackColor = Color.DimGray;
button3.Width = 130;
button3.BringToFront();
}
private void button3_MouseLeave(object sender, EventArgs e)
{
button3.BackColor = Color.Red;
button3.Width = 75;
}
解决方案
So first off, you don't want to do the exact same thing 3 times. Create a single method to add the appropriate handlers for a button, and then just write the code once to handle any given button.
Note that you can go into the expand/contract tick handlers and use the percentComplete value to set the height as well, to move the color along a spectrum (this would involve some mathematics of colors to do though) or to alter any other aspect of the button. If you're really motivated to generalize it you could add a parameter to the method of Action<double> that does something to the object based on the given percent progress.
public void AddAnimation(Button button)
{
var expandTimer = new System.Windows.Forms.Timer();
var contractTimer = new System.Windows.Forms.Timer();
expandTimer.Interval = 10;//can adjust to determine the refresh rate
contractTimer.Interval = 10;
DateTime animationStarted = DateTime.Now;
//TODO update as appropriate or make it a parameter
TimeSpan animationDuration = TimeSpan.FromMilliseconds(250);
int initialWidth = 75;
int endWidth = 130;
button.MouseHover += (_, args) =>
{
contractTimer.Stop();
expandTimer.Start();
animationStarted = DateTime.Now;
button.BackColor = Color.DimGray;
};
button.MouseLeave += (_, args) =>
{
expandTimer.Stop();
contractTimer.Start();
animationStarted = DateTime.Now;
button.BackColor = Color.Red;
};
expandTimer.Tick += (_, args) =>
{
double percentComplete = (DateTime.Now - animationStarted).Ticks
/ (double)animationDuration.Ticks;
if (percentComplete >= 1)
{
expandTimer.Stop();
}
else
{
button.Width = (int)(initialWidth +
(endWidth - initialWidth) * percentComplete);
}
};
contractTimer.Tick += (_, args) =>
{
double percentComplete = (DateTime.Now - animationStarted).Ticks
/ (double)animationDuration.Ticks;
if (percentComplete >= 1)
{
contractTimer.Stop();
}
else
{
button.Width = (int)(endWidth -
(endWidth - initialWidth) * percentComplete);
}
};
}
