public override void Draw(CGRect rect)
{
base.Draw(rect);
var gctx = UIGraphics.GetCurrentContext();
if (needclear)
{
gctx.ClearRect(rect);
gctx.SetStrokeColor(UIColor.Green.CGColor);
gctx.SetLineWidth(2);
gctx.StrokeRect(rect);
needclear = false;
return;
}
gctx.SetStrokeColor(UIColor.Green.CGColor);
gctx.SetLineWidth(2);
gctx.StrokeRect(rect);
if (WBData != null)
{
var xRate = rect.Size.Width / 9600;
var yRate = rect.Size.Height / 4800;
UIColor.Clear.SetFill();
UIColor.Black.SetStroke();
int currentMin = GetMinute(CurrentSecond);
if (previousMin != currentMin)
{
previousMin = currentMin;
currentEventTs = -1;
}
if (WBData.WBLines != null && WBData.WBLines.Count > 0)
{
foreach (WBLine line in WBData.WBLines)
{
WBLineStyle linestyle = WBLineStyle.Create(line.Color);
linestyle.Color.SetStroke();
gctx.SetLineWidth(linestyle.Width);
gctx.MoveTo(line.X0 * xRate, line.Y0 * yRate);
gctx.AddLineToPoint(line.X1 * xRate, line.Y1 * yRate);
gctx.StrokePath();
}
}
if (WBData.WBEvents != null && WBData.WBEvents.Count > 0)
{
Hashtable group = GroupWBEventsBySecond(WBData.WBEvents);
int endMilliseconds = CurrentSecond * 1000 % 60000;
int ix;
for (ix = currentEventTs; ix <= endMilliseconds; ix++)
{
List <WBEvent> wbevents = group[(uint)ix] as List <WBEvent>;
if (wbevents == null)
{
continue;
}
foreach (WBEvent wbevent in wbevents)
{
if (wbevent.X >= 0)
{
if (lastPoint == null)
{
lastPoint = wbevent;
}
else
{
currentLineStyle.Color.SetStroke();
gctx.SetLineWidth(currentLineStyle.Width);
gctx.MoveTo(lastPoint.X * xRate, lastPoint.Y * yRate);
gctx.AddLineToPoint(wbevent.X * xRate, wbevent.Y * yRate);
gctx.StrokePath();
lastPoint = wbevent;
}
}
else
{
switch (wbevent.X)
{
case -100: //Pen Up
currentLineStyle.Color = UIColor.Black;
lastPoint = null;
break;
case -200: //Clear event
gctx.ClearRect(rect);
lastPoint = null;
break;
default:
currentLineStyle = WBLineStyle.Create(wbevent.X);
break;
}
lastPoint = null;
}
}
}
}
}
}
private void DrawWhiteBoard(string group, int currenttime, bool forcerefresh, COLDataSource ds)
{
bool drawLines = true;
int currentMin = Helper.GetMinute(currenttime * 1000);
if (previousMin == currentMin && forcerefresh == false)
{
// Whiteboard data is based on minute, not second.
// Only draw when in different minute, or user changed the slider manually.
drawLines = false;
}
else
{
forcerefresh = false;
previousMin = currentMin;
currentEventTs = -1;
}
WBData wbdata = ds.GetWhiteBoardData(DataType.WB_1, currenttime);
if (wbdata == null)
{
return;
}
if (drawLines && wbdata.WBLines != null && wbdata.WBLines.Count > 0)
{
//JavaScriptSerializer jss = new JavaScriptSerializer();
//List<BoardLine> list = new List<BoardLine>();
foreach (WBLine line in wbdata.WBLines)
{
WBLineStyle linestyle = Helper.GetLineStyle(line.UColor);
Clients.Group(group).broadcastDrawWBLine(linestyle.Color, linestyle.Width, line.X0, line.Y0, line.X1, line.Y1);
//list.Add(new BoardLine { Color = linestyle.Color, Width = linestyle.Width, X0 = line.X0, Y0 = line.Y0, X1 = line.X1, Y1 = line.Y1 });
}
Clients.Group(group).broadcastDrawWBLineFinished();
//Clients.All.broadcastDrawWBLine(jss.Serialize(list));
}
if (wbdata.WBEvents != null && wbdata.WBEvents.Count > 0)
{
Hashtable htgroup = GroupWBEventsBySecond(wbdata.WBEvents);
int endMilliseconds = currenttime * 1000 % 60000;
int ix;
//JavaScriptSerializer jss = new JavaScriptSerializer();
//List<BoardLine> list = new List<BoardLine>();
for (ix = currentEventTs; ix <= endMilliseconds; ix++)
{
List <WBEvent> wbevents = htgroup[(uint)ix] as List <WBEvent>;
if (wbevents == null)
{
continue;
}
foreach (WBEvent wbevent in wbevents)
{
if (wbevent.X >= 0)
{
if (lastPoint == null)
{
lastPoint = wbevent;
}
else
{
//currentLineStyle.Color.SetStroke();
//gctx.SetLineWidth(currentLineStyle.Width);
//gctx.MoveTo(lastPoint.X * xRate, lastPoint.Y * yRate);
//gctx.AddLineToPoint(wbevent.X * xRate, wbevent.Y * yRate);
//gctx.StrokePath();
Clients.Group(group).broadcastDrawWBEvent(currentLineStyle.Color, currentLineStyle.Width, lastPoint.X, lastPoint.Y, wbevent.X, wbevent.Y);
//list.Add(new BoardLine { Color = currentLineStyle.Color, Width = currentLineStyle.Width, X0 = lastPoint.X, Y0 = lastPoint.Y, X1 = wbevent.X, Y1 = wbevent.Y });
lastPoint = wbevent;
}
}
else
{
switch (wbevent.X)
{
case -100: //Pen Up
currentLineStyle.Color = -8;
lastPoint = null;
break;
case -200: //Clear event
//gctx.ClearRect(rect);
Clients.Group(group).broadcastClearReat();
lastPoint = null;
break;
default:
currentLineStyle = Helper.GetLineStyle(wbevent.X);
break;
}
lastPoint = null;
}
}
}
Clients.Group(group).broadcastDrawWBEventFinished();
// Clients.All.broadcastDrawWBEvent(jss.Serialize(list));
currentEventTs = ix;
}
}