public bool PopScreenViewInfo(ref int originX, ref int originY, ref int screenSizeWidth,
ref int screenSizeHeight, ref double screenZoom)
{
// Pop a view off the view stack if it is available
lock (screenViewStackLock)
{
ScreenViewInfo screenViewInfo = null;
try
{
screenViewInfo = screenViewStack.Pop();
}
catch (Exception exc)
{
}
if (screenViewInfo == null)
{
return(false);
}
originX = screenViewInfo.OriginX;
originY = screenViewInfo.OriginY;
screenSizeWidth = screenViewInfo.ScreenSizeWidth;
screenSizeHeight = screenViewInfo.ScreenSizeHeight;
screenZoom = screenViewInfo.ScreenZoom;
return(true);
}
}
public bool UpdateScreenView(string user_id, int originX, int originY, int screenSizeWidth,
int screenSizeHeight, double screenZoom)
{
ScreenViewInfo screenViewInfo = new ScreenViewInfo(originX, originY, screenSizeWidth,
screenSizeHeight, screenZoom);
if ((MembershipList == null) || (!MembershipList.Contains(user_id)))
{
return(false);
}
lock (screenViewLock)
{
if (!screenViewMap.ContainsKey(user_id))
{
screenViewMap.Add(user_id, screenViewInfo);
return(true);
}
else
{
screenViewMap[user_id] = screenViewInfo;
return(false);
}
}
}
public bool GetScreenViewInfo(string user_id, ref int originX, ref int originY, ref int screenSizeWidth,
ref int screenSizeHeight, ref double screenZoom)
{
lock (screenViewLock)
{
if (!screenViewMap.ContainsKey(user_id))
{
return(false);
}
else
{
ScreenViewInfo screenViewInfo = screenViewMap[user_id];
originX = screenViewInfo.OriginX;
originY = screenViewInfo.OriginY;
screenSizeWidth = screenViewInfo.ScreenSizeWidth;
screenSizeHeight = screenViewInfo.ScreenSizeHeight;
screenZoom = screenViewInfo.ScreenZoom;
return(true);
}
}
}
public bool UpdateScreenView(string user_id, int originX, int originY, int screenSizeWidth,
int screenSizeHeight, double screenZoom)
{
ScreenViewInfo screenViewInfo = new ScreenViewInfo(originX, originY, screenSizeWidth,
screenSizeHeight, screenZoom);
if ((MembershipList == null) || (!MembershipList.Contains(user_id)))
{
return false;
}
lock (screenViewLock)
{
if (!screenViewMap.ContainsKey(user_id))
{
screenViewMap.Add(user_id, screenViewInfo);
return true;
}
else
{
screenViewMap[user_id] = screenViewInfo;
return false;
}
}
}