www.pudn.com > WM5.0forGIF.rar > AnimateCtl.cs

using System; 
using System.Windows.Forms; 
using System.Drawing; 
using System.Drawing.Imaging; 
 
namespace gifTest 
{ 
    public class AnimateCtl : System.Windows.Forms.Control 
    { 
        System.Windows.Forms.Timer fTimer = null;    //创建一个Time类对象fTime 
        protected Graphics graphics = null;    //前台绘图表面 
        private int loopCount =0;    //定义动画循环控制变量 
        private int loopCounter = 0;    //定义停止动画循环变量 
        private int count = 0;    //定义动画宽度 
        private int currentFrame = 0;    //定义动画帧变量 
         
        // 动画类构造方法 
        public AnimateCtl() 
        { 
            //缓存 Graphics 对象 
            this.graphics = this.CreateGraphics(); 
            //实例化 Timer 
            fTimer = new System.Windows.Forms.Timer(); 
            //与 Timer 的 Tick 事件挂钩 
            fTimer.Tick += new System.EventHandler(this.timer1_Tick); 
 
        } 
 
        private Bitmap bitmap; 
        public Bitmap Bitmap 
        { 
            get 
            { 
                return bitmap; 
            } 
            set 
            { 
                bitmap = value; 
            } 
        } 
 
        private void Draw(int iframe) 
        { 
            //计算图形框的左边位置 
            int XLocation = iframe * Width; 
            Rectangle rect = new Rectangle(XLocation, 0, Width,Height); 
            //绘制图像  
            graphics.DrawImage(bitmap, 0, 0, rect, GraphicsUnit.Pixel); 
        } 
 
        public void StartAnimation(int frWidth, int DelayInterval, int LoopCount) 
        { 
            Width = frWidth; 
            //循环次数 
            loopCount = LoopCount; 
            //重置循环计数器 
            loopCounter = 0; 
            //计算 count 
            count = bitmap.Width / Width; 
            Height = bitmap.Height; 
            //向计时器指定延迟间隔 
            fTimer.Interval = DelayInterval; 
            //启动计时器 
            fTimer.Enabled = true; 
        } 
 
        private void timer1_Tick(object sender, System.EventArgs e) 
        { 
            if (loopCount == -1)      //不停地循环 
            { 
                this.DrawFrame(); 
            } 
            else 
            { 
                if (loopCount == loopCounter) //停止动画 
                    fTimer.Enabled = false; 
                else 
                    this.DrawFrame(); 
            } 
        } 
        private void DrawFrame() 
        { 
            if (currentFrame < count - 1) 
            { 
                //移到下一个帧 
                currentFrame++; 
            } 
            else 
            { 
                //递增 loopCounter 
                loopCounter++; 
                currentFrame = 0; 
            } 
            Draw(currentFrame); 
        } 
 
        //动画停止方法 
        public void StopAnimation() 
        { 
            fTimer.Enabled = false; 
        } 
    } 
}