97 lines
No EOL
7.7 KiB
MQL5
97 lines
No EOL
7.7 KiB
MQL5
//+------------------------------------------------------------------+
|
|
//| ARGBGenerator.mqh |
|
|
//| Copyright 2025, Niquel Mendoza. |
|
|
//| https://www.mql5.com/es/users/nique_372/news |
|
|
//+------------------------------------------------------------------+
|
|
#property copyright "Copyright 2025, Niquel Mendoza."
|
|
#property link "https://www.mql5.com/es/users/nique_372/news"
|
|
#property strict
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Class CColorGeneratorArgb |
|
|
//| Usage: class to generate ARGB colors for charts or objects |
|
|
//+------------------------------------------------------------------+
|
|
class CColorGeneratorArgb
|
|
{
|
|
private:
|
|
int m_index; // Current index
|
|
bool m_generate; // Flag to generate new colors
|
|
uint m_current_palette[20]; // Working color palette (ARGB)
|
|
static const uint s_default_palette[20]; // Default base palette (ARGB)
|
|
uchar m_alpha; // Transparency (0–255)
|
|
|
|
public:
|
|
CColorGeneratorArgb();
|
|
|
|
//--- Gets the next ARGB color
|
|
uint Next(void);
|
|
//--- Resets the generator to the original palette
|
|
void Reset(void);
|
|
//--- Set alpha manually (0 = transparent, 255 = opaque)
|
|
void SetAlpha(uchar alpha);
|
|
};
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Default palette (20 harmonious colors, ARGB format) |
|
|
//+------------------------------------------------------------------+
|
|
const uint CColorGeneratorArgb::s_default_palette[20]=
|
|
{
|
|
0xFF3366CC,0xFFDC3912,0xFFFF9900,0xFF109618,0xFF990099,
|
|
0xFF3B3EAC,0xFF0099C6,0xFFDD4477,0xFF66AA00,0xFFB82E2E,
|
|
0xFF316395,0xFF994499,0xFF22AA99,0xFFAAAA11,0xFF6633CC,
|
|
0xFFE67300,0xFF8B0707,0xFF329262,0xFF5574A6,0xFF3B3EAC
|
|
};
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Constructor |
|
|
//+------------------------------------------------------------------+
|
|
CColorGeneratorArgb::CColorGeneratorArgb():
|
|
m_index(0),
|
|
m_generate(false),
|
|
m_alpha(255)
|
|
{
|
|
ArrayCopy(m_current_palette,s_default_palette);
|
|
}
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Generate or retrieve next color |
|
|
//+------------------------------------------------------------------+
|
|
uint CColorGeneratorArgb::Next(void)
|
|
{
|
|
if(m_index >= 20)
|
|
{
|
|
m_index = 0;
|
|
if(!m_generate)
|
|
m_generate = true;
|
|
}
|
|
|
|
if(m_generate)
|
|
{
|
|
// Simple XOR-based variation to get a new tone
|
|
uint base1 = m_current_palette[m_index];
|
|
uint base2 = (m_index == 19 ? m_current_palette[0] : m_current_palette[m_index + 1]);
|
|
m_current_palette[m_index] = (base1 ^ base2) | (uint(m_alpha) << 24);
|
|
}
|
|
|
|
// Apply alpha to ensure all colors follow current transparency
|
|
uint clr = (m_current_palette[m_index++] & 0x00FFFFFF) | (uint(m_alpha) << 24);
|
|
return clr;
|
|
}
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Reset the generator |
|
|
//+------------------------------------------------------------------+
|
|
void CColorGeneratorArgb::Reset(void)
|
|
{
|
|
m_index = 0;
|
|
m_generate = false;
|
|
ArrayCopy(m_current_palette, s_default_palette);
|
|
}
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Set alpha transparency |
|
|
//+------------------------------------------------------------------+
|
|
void CColorGeneratorArgb::SetAlpha(uchar alpha)
|
|
{
|
|
m_alpha = alpha;
|
|
} |