Trend Indicator for Amibroker (AFL)

_SECTION_BEGIN("Price");
pds = 20; 
MAFAST = EMA( Close, 20 ); 
MASLOW = EMA( Close, 40 ); 
  
DonchianUpper = HHV( Ref( H, -1 ), pds ); // Highest high value of highs in last 20 periods 
DonchianLower = LLV( Ref( L, -1 ), pds ); // Lowest low value of low in last 20 periods 
DonchianMiddle = ( DonchianUpper + DonchianLower ) / 2; 
  
UpTrend = C > ( LLV( L, 20 ) + 2 * ATR( 10 ) ) AND EMA( Close, 20 ) > EMA( Close, 40 ); 
DnTrend = C < ( HHV( H, 20 ) - 2 * ATR( 10 ) ) AND EMA( Close, 20 ) < EMA( Close, 40 ); 
Color = IIf( UpTrend, colorGreen, IIf( DnTrend, colorRed, colorBlue) ); 
UpTrend=ExRem(UpTrend,DnTrend);
Dntrend=ExRem(DnTrend,UpTrend);
// Plots a 20 period Donchian channel 
Plot( C, "Price", Color, styleBar | styleThick ); 
NewDay = IIf(Day() != Ref(Day(), -1) OR BarIndex() == LastValue(BarIndex()), 1, 0); 
Plot(NewDay, "", 47, 2 + 32768 + 4096, Minvalue = 0, Maxvalue = 1); 
_SECTION_END();
PlotShapes(IIf(UpTrend, shapeUpArrow, shapeNone),colorBrightGreen, 0,L, Offset=-45); 
PlotShapes(IIf(DnTrend, shapeDownArrow, shapeNone),colorRed, 0,H, Offset=-45);


_SECTION_BEGIN("L.T.P.");
cx = Param( "cxposn", 1000, 0, 1250, 1 );
cy = Param( "cyposn", 25, 0, 500, 1 );
GfxSelectFont( "Candara", 18, 98, False );
gfxcup	= SelectedValue(C > Ref(C,-1));
gfxpcolor = IIf(gfxcup,colorBrightGreen,colorRed);
GfxSetTextColor(gfxpcolor);
//GfxSetTextColor( colorWhite );
GfxTextOut( "L.T.P.  " + C + " ", cx, cy );
_SECTION_END();

_SECTION_BEGIN("Background text");
SetChartBkColor(colorBlack);
strWeekday = StrMid("---sunday---Monday--TuesdayWednesday-Thursday--Friday--Saturday", SelectedValue(DayOfWeek())*9,9);
GraphXSpace=Param("GraphXSpace",0,-55,200,1);
C13=Param("fonts",20,10,30,1 );
C14=Param("left-right",2.1,1.0,5.0,0.1 );
C15=Param("up-down",12,1,20,1 );
Miny = Status("axisminy");
Maxy = Status("axismaxy");
lvb = Status("lastvisiblebar");
fvb = Status("firstvisiblebar");
pxwidth = Status("pxwidth");
pxheight = Status("pxheight");
GfxSetBkMode(transparent=1);
GfxSetOverlayMode(1);
GfxSelectFont("Candara", Status("pxheight")/C13 );
GfxSetTextAlign( 6 );
GfxSetTextColor( ColorRGB (217,217,213));
GfxTextOut( Name(), Status("pxwidth")/C14, Status("pxheight")/C15 );
GfxSelectFont("Tahoma", Status("pxheight")/C13*0.5 );
GfxSetTextColor( ColorRGB (103,103,103));
GfxTextOut( "By", Status("pxwidth")/C14, Status("pxheight")/C15*2.5 );
GfxSelectFont("Candara", Status("pxheight")/C13*0.5 );
GfxSetTextColor( ColorRGB (103,103,103));
GfxTextOut( "Sai Stock Broking 09825340778", Status("pxwidth")/C14, Status("pxheight")/C15*4 );
GfxSelectFont("MS Sans Serif", 10, 500, False, False, 0);
_SECTION_END();

_SECTION_BEGIN("Title");

DODay = TimeFrameGetPrice("O", inDaily);
DHiDay = TimeFrameGetPrice("H", inDaily); 
DLoDay = TimeFrameGetPrice("L", inDaily); 
Title = EncodeColor(colorWhite)+"* SAI STOCK BROKING 09825340778 *  "+EncodeColor(colorWhite)+ Name() + ", " + Interval(2) + ", " + Date() + "   -  "+strWeekday + "  - " +
EncodeColor(colorWhite)   +  "\nO " + EncodeColor(colorWhite) + O + 

 ",   H :  "   + H + 
 ",   L  :  " + L + 
 ",   C  :  "  + C +
"\n"+EncodeColor(colorWhite)+ "  Day-Open : " +DODay + "  Day-High : " +DHiDay + "  Day-Low : " + DLoDay 


;
_SECTION_BEGIN("Time Left");
function GetSecondNum()
{
Time = Now( 4 );
Seconds = int( Time % 100 );
Minutes = int( Time / 100 % 100 );
Hours = int( Time / 10000 % 100 );
SecondNum = int( Hours * 60 * 60 + Minutes * 60 + Seconds );
return SecondNum;
}
RequestTimedRefresh( 1 );
TimeFrame = Interval();
SecNumber = GetSecondNum();
Newperiod = SecNumber % TimeFrame == 0;
SecsLeft = SecNumber - int( SecNumber / TimeFrame ) * TimeFrame;
SecsToGo = TimeFrame - SecsLeft;

x=Param("xposn",430,0,1000,1);
y=Param("yposn",40,0,1000,1);

GfxSelectSolidBrush( ColorRGB( 230, 230, 230 ) );
GfxSelectPen( ColorRGB( 230, 230, 230 ), 2 );
if ( NewPeriod )
{
GfxSelectSolidBrush( colorYellow );
GfxSelectPen( colorYellow, 2 );
Say( "New period" );
}

cx = Param( "cxposn", 1080, 0, 1250, 1 );
cy = Param( "cyposn", 5, 0, 500, 1 );
GfxSelectFont( "Candara", 14, 98, False );
//gfxcup	= SelectedValue(C > Ref(C,-1));
//gfxpcolor = IIf(gfxcup,colorBrightGreen,colorRed);
GfxSetTextColor(colorBlue);
//GfxSetTextColor( colorWhite );
GfxTextOut( "T i m e L e f t   " + SecsToGo + " ", cx, cy );
_SECTION_END();