private long SendImageCore(LanUser user, Image image, string imagePath)
{
string path;
if (image != null)
{
path = LanConfig.Instance.GetTempFileName(".png");
image.Save(path, ImageFormat.Png);
}
else
{
path = imagePath;
}
long len = LanFile.GetFileLength(path);
if (len > UdpClientEx.UDP_MAX_BUF_SIZE)
{
//图像文件过大的话用文件形式发送
return(SendFile(user, path, true));
}
else
{
UdpPacket packet = new UdpPacket();
packet.Address = user.IP;
packet.Port = user.Port;
packet.ToMAC = user.MAC;
packet.Command = UdpPacket.CMD_SEND_IMAGE | UdpPacket.CMD_OPTION_NEED_RESPONSE;
packet.FromMAC = this.MAC;
UdpPacketImageExtend extend = new UdpPacketImageExtend();
extend.EncryptKey = user.SecurityKeys.Public;
extend.Image = image ?? Image.FromFile(path);
packet.Extend = extend;
_client.Send(packet);
if (image != null)
{
//直接发送图像的话，临时图片就删除
LanFile.Delete(path);
}
return(packet.ID);
}
}
public static void SetPhoto(string key, Image img)
{
string fileName = Path.Combine(LanConfig.Instance.ProfilePhotoPath, key);
_cache.Remove(key);
LanFile.Delete(fileName);
if (img == null)
{
return;
}
using (Bitmap bmp = new Bitmap(img.Width, img.Height))
{
bmp.SetResolution(img.HorizontalResolution, img.VerticalResolution);
using (Graphics g = Graphics.FromImage(bmp))
{
g.DrawImageUnscaled(img, 0, 0);
}
bmp.Save(fileName, ImageFormat.Jpeg);
}
}
