74 lines
3 KiB
MQL5
74 lines
3 KiB
MQL5
//+------------------------------------------------------------------+
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//| ColorGenerator.mqh |
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//| Copyright 2000-2025, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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//| Class CColorGenerator |
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//| Usage: class to generate the default colors |
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//+------------------------------------------------------------------+
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class CColorGenerator
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{
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private:
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int m_index;
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bool m_generate;
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uint m_current_palette[20];
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const static uint s_default_palette[20];
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public:
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CColorGenerator(void);
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~CColorGenerator(void);
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//--- gets the next color
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uint Next(void);
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//--- reset generator
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void Reset(void);
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};
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const uint CColorGenerator::s_default_palette[20]=
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{
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0x3366CC,0xDC3912,0xFF9900,0x109618,0x990099,
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0x3B3EAC,0x0099C6,0xDD4477,0x66AA00,0xB82E2E,
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0x316395,0x994499,0x22AA99,0xAAAA11,0x6633CC,
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0xE67300,0x8B0707,0x329262,0x5574A6,0x3B3EAC
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};
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//+------------------------------------------------------------------+
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//| Constructor |
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//+------------------------------------------------------------------+
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CColorGenerator::CColorGenerator(void): m_index(0),
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m_generate(false)
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{
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ArrayCopy(m_current_palette,s_default_palette);
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}
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//+------------------------------------------------------------------+
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//| Destructor |
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//+------------------------------------------------------------------+
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CColorGenerator::~CColorGenerator(void)
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{
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}
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//+------------------------------------------------------------------+
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//| Gets or generates the following color from the palette |
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//+------------------------------------------------------------------+
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uint CColorGenerator::Next(void)
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{
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//--- check the array out of range
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if(m_index==20)
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{
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m_index=0;
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if(!m_generate)
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m_generate=true;
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}
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//--- check the default palette is over
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if(m_generate)
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m_current_palette[m_index]=(m_index==19 ? (m_current_palette[m_index]^m_current_palette[0]):(m_current_palette[m_index]^m_current_palette[m_index+1]));
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//--- return next color
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return(m_current_palette[m_index++]);
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}
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//+------------------------------------------------------------------+
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//| Resets all the new colors, set the index to 0 |
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//+------------------------------------------------------------------+
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void CColorGenerator::Reset(void)
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{
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m_index=0;
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m_generate=false;
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ArrayCopy(m_current_palette,s_default_palette);
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}
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//+------------------------------------------------------------------+
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