/// <summary>
/// 外部调用，开始进行推屏
/// </summary>
/// <param name="IP"></param>
public void StartPushScreen(string IP)
{
if (m_updatetimer != null)
{
m_updatetimer.Stop();
m_updatetimer.Dispose();
m_updatetimer = null;
}
timerlock = false;
m_mainimg = null;
m_framebufferdata = null;
m_truedrawrect = new Rectangle(0, 0, 0, 0);
m_IP = IP;
//将需要推屏的IP传递进入DLL
SetIP(m_IP);
StartVNCClient();
//启动timer事件，准备刷新屏幕数据
if (m_updatetimer == null)
{
m_updatetimer = new System.Timers.Timer(300);
m_updatetimer.Elapsed += new System.Timers.ElapsedEventHandler(UpdateImage);
m_updatetimer.AutoReset = true;
m_updatetimer.Enabled = true;
}
}
/// <summary>
/// 回调的屏幕刷新函数，对关键数据进行赋值
/// </summary>
/// <param name="date"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="w"></param>
/// <param name="h"></param>
/// <param name="left"></param>
/// <param name="top"></param>
/// <param name="right"></param>
/// <param name="bottom"></param>
private void GetUpdateDate(IntPtr date, int length, int w, int h, int left, int top, int right, int bottom)
{
if (m_framebufferdata == null)
{
m_framebufferdata = new FrameBufferData();
}
m_framebufferdata.data = date;
m_framebufferdata.length = length;
m_framebufferdata.w = w;
m_framebufferdata.h = h;
m_framebufferdata.left = left;
m_framebufferdata.top = top;
m_framebufferdata.right = right;
m_framebufferdata.bottom = bottom;
}
private void Update(FrameBufferData fb)
{
IntPtr date = fb.data;
int length = fb.length;
int w = fb.w;
int h = fb.h;
int left = fb.left;
int top = fb.top;
int right = fb.right;
int bottom = fb.bottom;
//lock (locker)
try
{
if (m_mainimg == null)
{
m_mainimg = new Bitmap(w, h, PixelFormat.Format32bppRgb);
}
if (m_truedrawrect.Width == 0)
{
if ((w * OSPictureBox.Height) >= (OSPictureBox.Width * h))
{
m_truedrawrect.Width = OSPictureBox.Width;
m_truedrawrect.Height = (OSPictureBox.Width * h) / w;
m_truedrawrect.X = 0;
m_truedrawrect.Y = (OSPictureBox.Height - m_truedrawrect.Height) / 2;
}
else
{
m_truedrawrect.Height = OSPictureBox.Height;
m_truedrawrect.Width = (OSPictureBox.Height * w) / h;
m_truedrawrect.X = (OSPictureBox.Width - m_truedrawrect.Width) / 2;
m_truedrawrect.Y = 0;
}
m_maing = OSPictureBox.CreateGraphics();
m_maing.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
m_maing.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
m_maing.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighSpeed;
}
byte[] m_imgData = new byte[length];
try
{
Marshal.Copy(date, m_imgData, 0, length);
BitmapData bitdata = m_mainimg.LockBits(
new Rectangle(0, 0, m_mainimg.Width, m_mainimg.Height),
ImageLockMode.WriteOnly,
PixelFormat.Format32bppRgb);
Marshal.Copy(m_imgData, 0, bitdata.Scan0, m_imgData.Length);
m_mainimg.UnlockBits(bitdata);
m_maing.DrawImage(m_mainimg,
m_truedrawrect,
new Rectangle(0, 0, w, h),
GraphicsUnit.Pixel);
}
catch (AccessViolationException)
{
Trace.WriteLine("内存托管错误");
}
}
catch (Exception)
{
}
}
