private static void RemoveClickEvent(PictureBox b)
{
var f1 = typeof(Control).GetField("EventDoubleClick", BindingFlags.Static | BindingFlags.NonPublic);
var obj = f1?.GetValue(b);
var pi = b.GetType().GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Instance);
var list = (EventHandlerList)pi.GetValue(b, null);
list.RemoveHandler(obj, list[obj]);
}
/// <summary>
/// 根据给定的图像及起点坐标和终点坐标截取图像，并储存,返回截取后的图像路径
/// </summary>
/// <param name="picBox">存放被截图像的PictureBox</param>
/// <param name="picName">图像路径</param>
/// <param name="start">起点</param>
/// <param name="end">终点,起点必须在终点上方</param>
/// <returns>返回截取后的图像路径</retu
public static string picCutFunction(PictureBox picBox, Bitmap pic, Point start, Point end)
{
//-------debug-----
// MessageBox.Show(start.ToString() + " end:" + end.ToString());
string picName = "original";
try
{
//原图高
int originalPicHeight = picBox.Image.Height;
//获取图片缩放后的大小
PropertyInfo rectangleProperty = picBox.GetType().GetProperty("ImageRectangle", BindingFlags.Instance | BindingFlags.NonPublic);
Rectangle rectangle = (Rectangle)rectangleProperty.GetValue(picBox, null);
//图片显示的宽度
int picShowWidth = rectangle.Width;
int picShowHeight = rectangle.Height;
//图片左边或者上边空白的宽度
int picLeftWidth = (picShowWidth == picBox.Width) ? 0 : (picBox.Width - picShowWidth) / 2;
int picTopHeight = (picShowHeight == picBox.Height) ? 0 : (picBox.Height - picShowHeight) / 2;
//图片的缩放比例
double rate = (double)picShowHeight / (double)originalPicHeight;
//将显示坐标转换为原图坐标
start.X = Convert.ToInt32((double)(start.X - picLeftWidth) / rate);
start.Y = Convert.ToInt32((double)(start.Y - picTopHeight) / rate);
end.X = Convert.ToInt32((double)(end.X - picLeftWidth) / rate);
end.Y = Convert.ToInt32((double)(end.Y - picTopHeight) / rate);
if (start.X < end.X && start.Y < end.Y)
{
int xa = start.X;
int xb = end.X;
int ya = start.Y;
int yb = end.Y;
Rectangle rec = new Rectangle(0, 0, pic.Width, pic.Height);
BitmapData bd = pic.LockBits(rec, ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
IntPtr ptr = bd.Scan0;
int bytes = bd.Stride * bd.Height;
byte[] rgbvalues = new byte[bytes];
System.Runtime.InteropServices.Marshal.Copy(ptr, rgbvalues, 0, bytes);
int w;
int h;
w = xb - xa;
h = yb - ya;
Bitmap pic1 = new Bitmap(w, h);// (Application.StartupPath + @"\11.jpg");
Rectangle rec6 = new Rectangle(0, 0, w, h);
BitmapData bd6 = pic1.LockBits(rec6, ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
IntPtr ptr6 = bd6.Scan0;
int bytes6 = bd6.Stride * bd6.Height;
byte[] rgbvalues6 = new byte[bytes6];
System.Runtime.InteropServices.Marshal.Copy(ptr6, rgbvalues6, 0, bytes6);
for (int i = xa; i < xb; i++)
{
for (int j = ya; j < yb; j++)
{
rgbvalues6[(j - ya) * bd6.Stride + (i - xa) * 3] = rgbvalues[j * bd.Stride + i * 3];
rgbvalues6[(j - ya) * bd6.Stride + (i - xa) * 3 + 1] = rgbvalues[j * bd.Stride + i * 3 + 1];
rgbvalues6[(j - ya) * bd6.Stride + (i - xa) * 3 + 2] = rgbvalues[j * bd.Stride + i * 3 + 2];
}
}
System.Runtime.InteropServices.Marshal.Copy(rgbvalues6, 0, ptr6, bytes6);
pic1.UnlockBits(bd6);
pic1.Save(Application.StartupPath + @"\Temp\" + Path.GetFileNameWithoutExtension(picName) + "_cuted.jpg"); //存储剪切后的图片
pic1.Dispose();
return Application.StartupPath + @"\Temp\" + Path.GetFileNameWithoutExtension(picName) + "_cuted.jpg";
}
else
{
// MessageBox.Show("划线未完成，请重新划线！");
return "";
}
}
catch (Exception err)
{
MessageBox.Show("系统出错，请重试!---1 " + err.Message + "\n当前处理图片： " + picName);
return "";
}
}
private Rectangle getPictureBoxOffset(PictureBox pb)
{
// It seems the only way of correctly adjusting for the picturebox position after it has been resized is to access private data from the picturebox class
System.Reflection.PropertyInfo pInfo = pb.GetType().GetProperty("ImageRectangle",
System.Reflection.BindingFlags.Public |
System.Reflection.BindingFlags.NonPublic |
System.Reflection.BindingFlags.Instance);
return (Rectangle)pInfo.GetValue(pb, null);
//return new Point(rectangle.X, rectangle.Y);
}
