| //+------------------------------------------------------------------+
|
| //| 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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| //+------------------------------------------------------------------+
|
| class CColorGenerator
|
| {
|
| 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];
|
|
|
| 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);
|
| //--- reset generator
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| void Reset(void);
|
| };
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| const uint CColorGenerator::s_default_palette[20]=
|
| {
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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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| 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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| //| 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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| //--- 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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| 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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| }
|
| //+------------------------------------------------------------------+
|
