using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using System.Drawing;
using System.Diagnostics; namespace AnimatedTransform
{
static class FormTransform
{
public static void TransformSize(Form frm, int newWidth, int newHeight)
{
TransformSize(frm, new Size(newWidth, newHeight));
} public static void TransformSize(Form frm, Size newSize)
{
ParameterizedThreadStart threadStart = new ParameterizedThreadStart(RunTransformation);
Thread transformThread = new Thread(threadStart);
transformThread.Start(new object[] { frm, newSize });
} private delegate void RunTransformationDelegate(object paramaters);
private static void RunTransformation(object parameters)
{
Form frm = (Form)((object[])parameters)[0];
if (frm.InvokeRequired)
{
RunTransformationDelegate del = new RunTransformationDelegate(RunTransformation);
frm.Invoke(del, parameters);
}
else
{
//动画的变量參数
double FPS = 300.0;
long interval = (long)(Stopwatch.Frequency / FPS);
long ticks1 = 0;
long ticks2 = 0; //传进来的新的窗口的大小
Size size = (Size)((object[])parameters)[1]; int xDiff = Math.Abs(frm.Width - size.Width);
int yDiff = Math.Abs(frm.Height - size.Height); int step = 10; int xDirection = frm.Width < size.Width ? 1 : -1;
int yDirection = frm.Height < size.Height ? 1 : -1; int xStep = step * xDirection;
int yStep = step * yDirection; //要调整的窗口的宽度是否在步长之内
bool widthOff = IsWidthOff(frm.Width, size.Width, xStep);
//要调整的窗口的高度是否在步长之内
bool heightOff = IsHeightOff(frm.Height, size.Height, yStep); while (widthOff || heightOff)
{
//获取当前的时间戳
ticks2 = Stopwatch.GetTimestamp();
//同意调整大小仅在有足够的时间来刷新窗口的时候
if (ticks2 >= ticks1 + interval)
{
//调整窗口的大小
if (widthOff)
frm.Width += xStep; if (heightOff)
frm.Height += yStep; widthOff = IsWidthOff(frm.Width, size.Width, xStep);
heightOff = IsHeightOff(frm.Height, size.Height, yStep); //同意窗口刷新
Application.DoEvents(); //保存当前的时间戳
ticks1 = Stopwatch.GetTimestamp();
} Thread.Sleep(1);
} }
} private static bool IsWidthOff(int currentWidth, int targetWidth, int step)
{
//目标宽度与当前宽度是否在步长之内,假设是,返回false
if (Math.Abs(currentWidth - targetWidth) <= Math.Abs(step)) return false; return (step > 0 && currentWidth < targetWidth) ||
(step < 0 && currentWidth > targetWidth);
} private static bool IsHeightOff(int currentHeight, int targetHeight, int step)
{
//目标高度与当前高度是否在步长之内,假设是,返回false
if (Math.Abs(currentHeight - targetHeight) <= Math.Abs(step)) return false; return (step > 0 && currentHeight < targetHeight) ||
(step < 0 && currentHeight > targetHeight);
}
}
}
调用方法:
Random random = new Random();
int width = random.Next(100, 500);//随机数产生窗口的宽
int height = random.Next(50, 800);//随机数产生窗口的高
FormTransform.TransformSize(this, width, height);