这篇文章主要为大家详细介绍了c#自定义音乐播放器进度条效果，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
有些时候我们做的程序需要进度条，而vs提供的控件不是我们想要的。先看效果图：
进度条闪烁动画，当然背景可设为Transparent
之前想手绘进度条线条的，结果控件运行时会闪烁，所以直接用了panel控件
源码：
[DefaultEvent("ProgressClick")]
[ToolboxBitmap(typeof(TrackBar))]
public partial class ProcessBar : UserControl
{
public ProcessBar()
{
//InitializeComponent();
//this.SetStyle(ControlStyles.UserPaint, true);
//this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
//this.SetStyle(ControlStyles.DoubleBuffer, true);
}
private int locationX=0;
[Description("单击时X的坐标")]
public int LocationX
{
get { return locationX; }
}
private int current = 0;
[Description("当前进度")]
public int Current
{
get { return current; }
set
{
if (value > 232 || value < 0)
return;
current = value;
panelCurrent.Size = new Size(value, 1);
picture.Location = new Point(value - 4, -3);
Invalidate();
}
}
private bool isPlay = false;
[Description("是否播放")]
public bool IsPlay
{
get { return isPlay; }
set { isPlay = value; tmrCurrent.Enabled = isPlay; Invalidate(); }
}
public delegate void MouseHandle(object sender,EventArgs e);
[Description("点下鼠标")]
public event MouseHandle BarMouseDown;
int picturetype = 0;
private void tmrCurrent_Tick(object sender, EventArgs e)
{
if (picturetype == 0)
{ picture.Image = Properties.Resources.play_slider_thumb; picturetype = 1; }
else
{ picture.Image = Properties.Resources.play_slider_thumb_animate; picturetype = 0; }
GraphicsPath g = subGraphicsPath(picture.Image);
if (g == null) return;
picture.Region = new Region(g);
}
private unsafe static GraphicsPath subGraphicsPath(Image img)
{
if (img == null) return null;
// 建立GraphicsPath, 给我们的位图路径计算使用
GraphicsPath g = new GraphicsPath(FillMode.Alternate);
Bitmap bitmap = new Bitmap(img);
int width = bitmap.Width;
int height = bitmap.Height;
BitmapData bmData = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
byte* p = (byte*)bmData.Scan0;
int offset = bmData.Stride - width * 3;
int p0, p1, p2; // 记录左上角0，0座标的颜色值
p0 = p[0];
p1 = p[1];
p2 = p[2];
int start = -1;
// 行座标 ( Y col )
for (int Y = 0; Y < height; Y++)
{
// 列座标 ( X row )
for (int X = 0; X < width; X++)
{
if (start == -1 && (p[0] != p0 || p[1] != p1 || p[2] != p2)) //如果 之前的点没有不透明 且 不透明
{
start = X; //记录这个点
}
else if (start > -1 && (p[0] == p0 && p[1] == p1 && p[2] == p2)) //如果 之前的点是不透明 且 透明
{
g.AddRectangle(new Rectangle(start, Y, X - start, 1)); //添加之前的矩形到
start = -1;
}
if (X == width - 1 && start > -1) //如果 之前的点是不透明 且 是最后一个点
{
g.AddRectangle(new Rectangle(start, Y, X - start + 1, 1)); //添加之前的矩形到
start = -1;
}
p += 3; //下一个内存地址
}
p += offset;
} bitmap.UnlockBits(bmData);
bitmap.Dispose();
// 返回计算出来的不透明图片路径
return g;
}
private void panelTotal_MouseDown(object sender, MouseEventArgs e)
{
Current = e.Location.X;
locationX = e.Location.X;
if (BarMouseDown != null)
{
BarMouseDown.Invoke(sender, e);
}
}
private void panelCurrent_MouseDown(object sender, MouseEventArgs e)
{
Current = e.Location.X;
locationX = e.Location.X;
if (BarMouseDown != null)
{
BarMouseDown.Invoke(sender, e);
}
}
}用到的素材：
直接右键另存为图片，之所以用黑色背景是因为图片是白色的看不见，不用多说了。
提示：这里用到了unsafe关键字，需要设置项目的属性-----允许运行不安全的代码，没有设置的同学不要以为程序错了
