| //+------------------------------------------------------------------+
|
| //| ColorLine.mq5 |
|
| //| Copyright 2000-2025, MetaQuotes Ltd. |
|
| //| https://www.mql5.com |
|
| //+------------------------------------------------------------------+
|
| #property copyright "Copyright 2000-2025, MetaQuotes Ltd."
|
| #property link "https://www.mql5.com"
|
|
|
| #property indicator_chart_window
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| #property indicator_buffers 2
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| #property indicator_plots 1
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| //--- plot ColorLine
|
| #property indicator_label1 "ColorLine"
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| #property indicator_type1 DRAW_COLOR_LINE
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| #property indicator_color1 clrRed,clrGreen,clrBlue
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| #property indicator_style1 STYLE_SOLID
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| #property indicator_width1 3
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| //--- indicator buffers
|
| double ExtColorLineBuffer[];
|
| double ExtColorsBuffer[];
|
|
|
| int ExtMAHandle;
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator initialization function |
|
| //+------------------------------------------------------------------+
|
| void OnInit()
|
| {
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| //--- indicator buffers mapping
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| SetIndexBuffer(0,ExtColorLineBuffer,INDICATOR_DATA);
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| SetIndexBuffer(1,ExtColorsBuffer,INDICATOR_COLOR_INDEX);
|
| //--- get MA handle
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| ExtMAHandle=iMA(Symbol(),0,10,0,MODE_EMA,PRICE_CLOSE);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator iteration function |
|
| //+------------------------------------------------------------------+
|
| int OnCalculate(const int rates_total,
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| const int prev_calculated,
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| const datetime &time[],
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| const double &open[],
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| const double &high[],
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| const double &low[],
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| const double &close[],
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| const long &tick_volume[],
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| const long &volume[],
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| const int &spread[])
|
| {
|
| static int ticks=0,modified=0;
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| //--- check data
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| int calculated=BarsCalculated(ExtMAHandle);
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| if(calculated<rates_total)
|
| {
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| Print("Not all data of ExtMAHandle is calculated (",calculated," bars). Error ",GetLastError());
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| return(0);
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| }
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| //--- first calculation or number of bars was changed
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| if(prev_calculated==0)
|
| {
|
| //--- copy values of MA into indicator buffer ExtColorLineBuffer
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| if(CopyBuffer(ExtMAHandle,0,0,rates_total,ExtColorLineBuffer)<=0)
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| return(0);
|
| //--- now set line color for every bar
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| for(int i=0; i<rates_total && !IsStopped(); i++)
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| ExtColorsBuffer[i]=getIndexOfColor(i);
|
| }
|
| else
|
| {
|
| //--- we can copy not all data
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| int to_copy;
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| if(prev_calculated>rates_total || prev_calculated<0)
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| to_copy=rates_total;
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| else
|
| {
|
| to_copy=rates_total-prev_calculated;
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| if(prev_calculated>0)
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| to_copy++;
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| }
|
| //--- copy values of MA into indicator buffer ExtColorLineBuffer
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| int copied=CopyBuffer(ExtMAHandle,0,0,rates_total,ExtColorLineBuffer);
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| if(copied<=0)
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| return(0);
|
|
|
| ticks++; // ticks counting
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| if(ticks>=5) //it's time to change color scheme
|
| {
|
| ticks=0; // reset counter
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| modified++; // counter of color changes
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| if(modified>=3)
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| modified=0;// reset counter
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| ResetLastError();
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| switch(modified)
|
| {
|
| case 0: // first color scheme
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,clrRed);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,clrBlue);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,clrGreen);
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| break;
|
| case 1: // second color scheme
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,clrYellow);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,clrPink);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,clrLightSlateGray);
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| break;
|
| default: // third color scheme
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,clrLightGoldenrod);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,clrOrchid);
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| PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,clrLimeGreen);
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| }
|
| }
|
| else
|
| {
|
| //--- set start position
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| int start=prev_calculated-1;
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| //--- now we set line color for every bar
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| for(int i=start; i<rates_total && !IsStopped(); i++)
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| ExtColorsBuffer[i]=getIndexOfColor(i);
|
| }
|
| }
|
| //--- return value of prev_calculated for next call
|
| return(rates_total);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| get color index |
|
| //+------------------------------------------------------------------+
|
| int getIndexOfColor(const int i)
|
| {
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| int j=i%300;
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| if(j<100) // first index
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| return(0);
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| if(j<200) // second index
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| return(1);
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| return(2); // third index
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| }
|
| //+------------------------------------------------------------------+
|
