forked from rosh/MQL5Book
70 lines
2.5 KiB
MQL5
70 lines
2.5 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| ConversionColor.mq5 |
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//| Copyright 2021, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#define PRT(A) Print(#A, "=", (A))
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//+------------------------------------------------------------------+
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//| ARGB equivalent representation |
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//+------------------------------------------------------------------+
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struct Argb
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{
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uchar BB;
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uchar GG;
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uchar RR;
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uchar AA;
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};
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//+------------------------------------------------------------------+
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//| Split ARGB value into components |
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//+------------------------------------------------------------------+
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union ColorARGB
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{
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uint value;
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uchar channels[4]; // 0 - BB, 1 - GG, 2 - RR, 3 - AA
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Argb split[1];
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ColorARGB(uint u) : value(u) { }
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};
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#define ARGBToColor(U) ((color)((((U) & 0xFF) << 16) | ((U) & 0xFF00) | (((U) >> 16) & 0xFF)))
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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PRT(ColorToString(clrBlue)); // 0,0,255
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PRT(ColorToString(C'0,0,255', true)); // clrBlue
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PRT(ColorToString(C'0,0,250')); // 0,0,250
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PRT(ColorToString(C'0,0,250', true)); // 0,0,250 (no such color name)
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PRT(ColorToString(0x34AB6821, true)); // 33,104,171 (0x21,0x68,0xAB)
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PRT(StringToColor("0,0,255")); // clrBlue
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PRT(StringToColor("clrBlue")); // clrBlue
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PRT(StringToColor("Blue")); // clrBlack (no such color name)
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// excessive text is skipped
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PRT(StringToColor("255,255,255 more text")); // clrWhite
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PRT(StringToColor("This is color: 128,128,128")); // clrGray
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uint u = ColorToARGB(clrBlue);
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PrintFormat("ARGB1=%X", u); // ARGB1=FF0000FF
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ColorARGB clr1(u);
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ArrayPrint(clr1.split);
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/*
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[BB] [GG] [RR] [AA]
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[0] 255 0 0 255
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*/
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u = ColorToARGB(clrDeepSkyBlue, 0x40);
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PrintFormat("ARGB2=%X", u); // ARGB2=4000BFFF
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ColorARGB clr2(u);
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ArrayPrint(clr2.split);
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/*
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[BB] [GG] [RR] [AA]
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[0] 255 191 0 64
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*/
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Print(ARGBToColor(u)); // clrDeepSkyBlue
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}
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//+------------------------------------------------------------------+
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