First commit [09/03/2018]

This commit is contained in:
Pierre8rTeam
2018-03-09 16:43:19 +01:00
commit 25e9006a0b
375 changed files with 294601 additions and 0 deletions
File diff suppressed because it is too large Load Diff
+347
View File
@@ -0,0 +1,347 @@
//+------------------------------------------------------------------+
//| HistogramChart.mqh |
//| Copyright 2009-2017, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#include "ChartCanvas.mqh"
#include <Arrays\ArrayObj.mqh>
//+------------------------------------------------------------------+
//| Class CHistogramChart |
//| Usage: generates histogram chart |
//+------------------------------------------------------------------+
class CHistogramChart : public CChartCanvas
{
private:
//--- colors
uint m_fill_brush[];
//--- adjusted parameters
bool m_gradient;
uint m_bar_gap;
uint m_bar_min_size;
uint m_bar_border;
//--- data
CArrayObj *m_values;
public:
CHistogramChart(void);
~CHistogramChart(void);
//--- create
virtual bool Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt=COLOR_FORMAT_ARGB_NORMALIZE);
//--- adjusted parameters
void Gradient(const bool flag=true) { m_gradient=flag; }
void BarGap(const uint value) { m_bar_gap=value; }
void BarMinSize(const uint value) { m_bar_min_size=value; }
void BarBorder(const uint value) { m_bar_border=value; }
//--- data
bool SeriesAdd(const double &value[],const string descr="",const uint clr=0);
bool SeriesInsert(const uint pos,const double &value[],const string descr="",const uint clr=0);
bool SeriesUpdate(const uint pos,const double &value[],const string descr=NULL,const uint clr=0);
bool SeriesDelete(const uint pos);
bool ValueUpdate(const uint series,const uint pos,double value);
protected:
virtual void DrawData(const uint idx);
void DrawBar(const int x,const int y,const int w,const int h,const uint clr);
void GradientBrush(const int size,const uint fill_clr);
};
//+------------------------------------------------------------------+
//| Constructor |
//+------------------------------------------------------------------+
CHistogramChart::CHistogramChart(void) : m_gradient(true),
m_bar_gap(3),
m_bar_min_size(5),
m_bar_border(0)
{
ShowFlags(FLAG_SHOW_LEGEND|FLAGS_SHOW_SCALES|FLAG_SHOW_GRID);
}
//+------------------------------------------------------------------+
//| Destructor |
//+------------------------------------------------------------------+
CHistogramChart::~CHistogramChart(void)
{
if(ArraySize(m_fill_brush)!=0)
ArrayFree(m_fill_brush);
}
//+------------------------------------------------------------------+
//| Create dynamic resource |
//+------------------------------------------------------------------+
bool CHistogramChart::Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt)
{
//--- create object to store data
if((m_values=new CArrayObj)==NULL)
return(false);
//--- pass responsibility for its destruction to the parent class
m_data=m_values;
//--- call method of parent class
if(!CChartCanvas::Create(name,width,height,clrfmt))
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Adds data series |
//+------------------------------------------------------------------+
bool CHistogramChart::SeriesAdd(const double &value[],const string descr,const uint clr)
{
//--- check
if(m_data_total==m_max_data)
return(false);
//--- add
CArrayDouble *arr=new CArrayDouble;
if(!m_values.Add(arr))
return(false);
if(!arr.AssignArray(value))
return(false);
if(!m_colors.Add((clr==0) ? GetDefaultColor(m_data_total) : clr))
return(false);
if(!m_descriptors.Add(descr))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Inserts data series |
//+------------------------------------------------------------------+
bool CHistogramChart::SeriesInsert(const uint pos,const double &value[],const string descr,const uint clr)
{
//--- check
if(m_data_total==m_max_data)
return(false);
if(pos>=m_data_total)
return(false);
//--- insert
CArrayDouble *arr=new CArrayDouble;
if(!m_values.Insert(arr,pos))
return(false);
if(!arr.AssignArray(value))
return(false);
if(!m_colors.Insert((clr==0) ? GetDefaultColor(m_data_total) : clr,pos))
return(false);
if(!m_descriptors.Insert(descr,pos))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Updates data series |
//+------------------------------------------------------------------+
bool CHistogramChart::SeriesUpdate(const uint pos,const double &value[],const string descr,const uint clr)
{
//--- check
if(pos>=m_data_total)
return(false);
CArrayDouble *data=m_values.At(pos);
if(data==NULL)
return(false);
//--- update
if(!data.AssignArray(value))
return(false);
if(clr!=0 && !m_colors.Update(pos,clr))
return(false);
if(descr!=NULL && !m_descriptors.Update(pos,descr))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Deletes data series |
//+------------------------------------------------------------------+
bool CHistogramChart::SeriesDelete(const uint pos)
{
//--- check
if(pos>=m_data_total && m_data_total!=0)
return(false);
//--- delete
if(!m_values.Delete(pos))
return(false);
m_data_total--;
if(!m_colors.Delete(pos))
return(false);
if(!m_descriptors.Delete(pos))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Updates element in data series |
//+------------------------------------------------------------------+
bool CHistogramChart::ValueUpdate(const uint series,const uint pos,double value)
{
CArrayDouble *data=m_values.At(series);
//--- check
if(data==NULL)
return(false);
//--- update
if(!data.Update(pos,value))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Draws histogram |
//+------------------------------------------------------------------+
void CHistogramChart::DrawData(const uint idx)
{
double value=0.0;
//--- check
CArrayDouble *data=m_values.At(idx);
if(data==NULL)
return;
int total=data.Total();
if(total==0 || (int)idx>=total)
return;
//--- calculate
int x1=m_data_area.left;
int x2=m_data_area.right;
int dx=(x2-x1)/total;
uint clr=m_colors[idx];
uint w=dx/m_data_total;
if(w<m_bar_min_size)
w=m_bar_min_size;
int x=x1+(int)(m_bar_gap+w*idx);
//--- set font
string fontname;
int fontsize=0;
uint fontflags=0;
uint fontangle=0;
if(IS_SHOW_VALUE)
{
FontGet(fontname,fontsize,fontflags,fontangle);
FontSet(fontname,-10*(w-3),fontflags,900);
}
//--- prepare gradient fill
GradientBrush(w,clr);
//--- draw
for(int i=0;i<total;i++,x+=dx)
{
int y,h;
double val=data[i];
if(val==EMPTY_VALUE)
continue;
if(m_accumulative)
value+=val;
else
value=val;
// int val=(int)(value*m_scale_y);
if(value>0)
{
y=(m_y_0-(int)(value*m_scale_y));
h=m_y_0-y;
}
else
{
y=m_y_0;
h=-(int)(value*m_scale_y);
}
DrawBar(x,y,w,h,clr);
//--- draw text of value
if(IS_SHOW_VALUE)
{
string text =DoubleToString(value,2);
int width=(int)(TextWidth(text)+w);
if(value>0)
{
if(width>y-m_y_max)
TextOut(x+w/2,y+w,text,m_color_text,TA_RIGHT|TA_VCENTER);
else
TextOut(x+w/2,y-w,text,m_color_text,TA_LEFT|TA_VCENTER);
}
else
{
if(width>m_y_min-y-h)
TextOut(x+w/2,y+h-w,text,m_color_text,TA_LEFT|TA_VCENTER);
else
TextOut(x+w/2,y+h+w,text,m_color_text,TA_RIGHT|TA_VCENTER);
}
}
}
if(IS_SHOW_VALUE)
FontSet(fontname,fontsize,fontflags,fontangle);
}
//+------------------------------------------------------------------+
//| Draws bar |
//+------------------------------------------------------------------+
void CHistogramChart::DrawBar(const int x,const int y,const int w,const int h,const uint clr)
{
//--- draw bar
if(!m_gradient || ArraySize(m_fill_brush)<w)
FillRectangle(x+1,y+1,w-x-2,h-y-2,clr);
else
{
for(int i=1;i<h;i++)
ArrayCopy(m_pixels,m_fill_brush,(y+i)*m_width+x+1,0,w);
}
//--- draw bar border
if(m_bar_border!=0)
Rectangle(x,y,x+w-1,y+h-1,m_color_border);
}
//+------------------------------------------------------------------+
//| Creates brush for gradient fill |
//+------------------------------------------------------------------+
void CHistogramChart::GradientBrush(const int size,const uint fill_clr)
{
//--- to prepare gradient fill, we will use Bresenham's circle algorithm
//--- X coordinate - size of the fill,
//--- Y coordinate - color brightness
if(m_gradient)
{
//--- adjust gradient radius if necessary
int r=size;
//--- check
if(r<1)
return;
if(r!=ArrayResize(m_fill_brush,r))
return;
//--- initialize brush
ArrayInitialize(m_fill_brush,m_color_background);
//--- variables
int f =1-r;
int dd_x=1;
int dd_y=-2*r;
int dx =0;
int dy =r;
int i1,i2;
uint clr,dclr;
//---
i1=i2=r>>1;
if((r&1)==0)
i1--;
//--- calculate
while(dy>=dx)
{
clr=fill_clr;
dclr=GETRGB(XRGB((r-dy)*GETRGBR(clr)/r,(r-dy)*GETRGBG(clr)/r,(r-dy)*GETRGBB(clr)/r));
clr-=dclr;
m_fill_brush[i1]=clr;
m_fill_brush[i2]=clr;
//---
if(f>=0)
{
dy--;
dd_y+=2;
f+=dd_y;
}
dx++;
if(--i1<0)
break;
i2++;
dd_x+=2;
f+=dd_x;
}
}
else
ArrayFree(m_fill_brush);
}
//+------------------------------------------------------------------+
+383
View File
@@ -0,0 +1,383 @@
//+------------------------------------------------------------------+
//| LineChart.mqh |
//| Copyright 2009-2017, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#include "ChartCanvas.mqh"
#include <Arrays\ArrayObj.mqh>
//+------------------------------------------------------------------+
//| Class CLineChart |
//| Usage: generates line chart |
//+------------------------------------------------------------------+
class CLineChart : public CChartCanvas
{
private:
//--- data
CArrayObj *m_values;
//--- adjusted parameters
bool m_filled;
public:
CLineChart(void);
~CLineChart(void);
//--- create
virtual bool Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt=COLOR_FORMAT_ARGB_NORMALIZE);
//--- adjusted parameters
void Filled(const bool flag=true) { m_filled=flag; }
//--- set up
bool SeriesAdd(const double &value[],const string descr="",const uint clr=0);
bool SeriesInsert(const uint pos,const double &value[],const string descr="",const uint clr=0);
bool SeriesUpdate(const uint pos,const double &value[],const string descr=NULL,const uint clr=0);
bool SeriesDelete(const uint pos);
bool ValueUpdate(const uint series,const uint pos,double value);
protected:
virtual void DrawChart(void);
virtual void DrawData(const uint index=0);
private:
double CalcArea(const uint index);
};
//+------------------------------------------------------------------+
//| Constructor |
//+------------------------------------------------------------------+
CLineChart::CLineChart(void) : m_filled(false)
{
ShowFlags(FLAG_SHOW_LEGEND|FLAGS_SHOW_SCALES|FLAG_SHOW_GRID);
}
//+------------------------------------------------------------------+
//| Destructor |
//+------------------------------------------------------------------+
CLineChart::~CLineChart(void)
{
}
//+------------------------------------------------------------------+
//| Create dynamic resource |
//+------------------------------------------------------------------+
bool CLineChart::Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt)
{
//--- create object to store data
if((m_values=new CArrayObj)==NULL)
return(false);
//--- pass responsibility for its destruction to the parent class
m_data=m_values;
//--- call method of parent class
if(!CChartCanvas::Create(name,width,height,clrfmt))
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Adds data series |
//+------------------------------------------------------------------+
bool CLineChart::SeriesAdd(const double &value[],const string descr,const uint clr)
{
//--- check
if(m_data_total==m_max_data)
return(false);
//--- add
CArrayDouble *arr=new CArrayDouble;
if(!m_values.Add(arr))
return(false);
if(!arr.AssignArray(value))
return(false);
if(!m_colors.Add((clr==0) ? GetDefaultColor(m_data_total) : clr))
return(false);
if(!m_descriptors.Add(descr))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Inserts data series |
//+------------------------------------------------------------------+
bool CLineChart::SeriesInsert(const uint pos,const double &value[],const string descr,const uint clr)
{
//--- check
if(m_data_total==m_max_data)
return(false);
if(pos>=m_data_total)
return(false);
//--- insert
CArrayDouble *arr=new CArrayDouble;
if(!m_values.Insert(arr,pos))
return(false);
if(!arr.AssignArray(value))
return(false);
if(!m_colors.Insert((clr==0) ? GetDefaultColor(m_data_total) : clr,pos))
return(false);
if(!m_descriptors.Insert(descr,pos))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Updates data series |
//+------------------------------------------------------------------+
bool CLineChart::SeriesUpdate(const uint pos,const double &value[],const string descr,const uint clr)
{
//--- check
if(pos>=m_data_total)
return(false);
CArrayDouble *data=m_values.At(pos);
if(data==NULL)
return(false);
//--- update
if(!data.AssignArray(value))
return(false);
if(clr!=0 && !m_colors.Update(pos,clr))
return(false);
if(descr!=NULL && !m_descriptors.Update(pos,descr))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Deletes data series |
//+------------------------------------------------------------------+
bool CLineChart::SeriesDelete(const uint pos)
{
//--- check
if(pos>=m_data_total && m_data_total!=0)
return(false);
//--- delete
if(!m_values.Delete(pos))
return(false);
m_data_total--;
if(!m_colors.Delete(pos))
return(false);
if(!m_descriptors.Delete(pos))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Updates element in data series |
//+------------------------------------------------------------------+
bool CLineChart::ValueUpdate(const uint series,const uint pos,double value)
{
CArrayDouble *data=m_values.At(series);
//--- check
if(data==NULL)
return(false);
//--- update
if(!data.Update(pos,value))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Redraws data |
//+------------------------------------------------------------------+
void CLineChart::DrawChart(void)
{
if(m_filled)
{
//--- calculate areas of filling
double s[];
ArrayResize(s,m_data_total);
ArrayInitialize(s,0);
for(uint i=0;i<m_data_total;i++)
{
CArrayDouble *data=m_values.At(i);
if(data==NULL)
continue;
int total=data.Total();
if(total<=1)
continue;
s[i]=CalcArea(i);
}
int index=ArrayMaximum(s);
while(index!=-1 && s[index]!=0.0)
{
//--- draw in area descending order
DrawData(index);
s[index]=0.0;
index=ArrayMaximum(s);
}
}
else
for(uint i=0;i<m_data_total;i++)
DrawData(i);
}
//+------------------------------------------------------------------+
//| Draws lines |
//+------------------------------------------------------------------+
void CLineChart::DrawData(const uint index)
{
double value=0.0;
//--- check
CArrayDouble *data=m_values.At(index);
if(data==NULL)
return;
int total=data.Total();
if(total<=1)
return;
//--- calculate
int dx=m_data_area.Width()/(total-1);
int x=m_data_area.left+1;
int y1=0;
int y2=(int)(m_y_0-data[0]*m_scale_y);
//--- draw
for(int i=1;i<total;i++,x+=dx)
{
y1=y2;
double val=data[i];
if(val==EMPTY_VALUE)
continue;
if(m_accumulative)
value+=val;
else
value=val;
y2=(int)(m_y_0-value*m_scale_y);
if(m_filled)
{
if((y1>m_y_0 && y2<m_y_0) || (y1<m_y_0 && y2>m_y_0))
{
//--- draw two triangles
int x3;
if(y1>y2)
{
x3=x+dx*(y1-m_y_0)/(y1-y2);
FillTriangle(x,y1,x3,m_y_0,x,m_y_0,(uint)m_colors[index]);
FillTriangle(x+dx,y2,x3,m_y_0,x+dx,m_y_0,(uint)m_colors[index]);
}
else
{
x3=x+dx*(m_y_0-y1)/(y2-y1);
FillTriangle(x,y1,x3,m_y_0,x,m_y_0,(uint)m_colors[index]);
FillTriangle(x+dx,y2,x3,m_y_0,x+dx,m_y_0,(uint)m_colors[index]);
}
continue;
}
if(y1<m_y_0 || y2<m_y_0)
{
if(y1>y2)
FillTriangle(x,y1,x+dx,y2,x+dx,y1,(uint)m_colors[index]);
if(y1<y2)
{
FillTriangle(x,y1,x+dx,y2,x,y2,(uint)m_colors[index]);
y1=y2;
}
}
if(y1>m_y_0 || y2>m_y_0)
{
if(y1<y2)
FillTriangle(x,y1,x+dx,y2,x+dx,y1,(uint)m_colors[index]);
if(y1>y2)
{
FillTriangle(x,y1,x+dx,y2,x,y2,(uint)m_colors[index]);
y1=y2;
}
}
FillRectangle(x,m_y_0,x+dx,y1,(uint)m_colors[index]);
}
else
LineAA(x,y1,x+dx,y2,(uint)m_colors[index],STYLE_SOLID);
}
}
//+------------------------------------------------------------------+
//| Area of filling |
//+------------------------------------------------------------------+
double CLineChart::CalcArea(const uint index)
{
double area =0;
double value=0;
int dx =100;
//---
CArrayDouble *data=m_values.At(index);
if(data==NULL)
return(0);
int total=data.Total();
if(total<=1)
return(0);
int y1=0;
int y2=(int)(m_y_0-data[0]*m_scale_y);
for(int i=0;i<total;i++)
{
y1=y2;
double val=data[i];
if(val==EMPTY_VALUE)
continue;
if(m_accumulative)
value+=val;
else
value=val;
y2=(int)(m_y_0-value*m_scale_y);
if((y1>m_y_0 && y2<m_y_0) || (y1<m_y_0 && y2>m_y_0))
{
//--- line of values crosses the Y axis
int x;
if(y1>y2)
{
//--- from the bottom up
x=dx*(y1-m_y_0)/(y1-y2);
//--- add area of lower triangle
area+=x*(y1-m_y_0)/2;
//--- add area of upper triangle
area+=(dx-x)*(m_y_0-y2)/2;
}
else
{
//--- from top down
x=dx*(m_y_0-y1)/(y2-y1);
//--- add area of upper triangle
area+=x*(m_y_0-y1)/2;
//--- add area of lower triangle
area+=(dx-x)*(y2-m_y_0)/2;
}
continue;
}
if(y1<m_y_0 || y2<m_y_0)
{
//--- both values are greater than zero
if(y1>y2)
{
//--- add area of triangle
area+=dx*(y1-y2)/2;
//--- add area of rectangle
area+=dx*(m_y_0-y2);
}
if(y1<y2)
{
//--- add area of triangle
area+=dx*(y2-y1)/2;
//--- add area of rectangle
area+=dx*(m_y_0-y1);
}
}
if(y1>m_y_0 || y2>m_y_0)
{
//--- both values are less than zero
if(y1<y2)
{
//--- add area of triangle
area+=dx*(y2-y1)/2;
//--- add area of rectangle
area+=dx*(y1-m_y_0);
}
if(y1>y2)
{
//--- add area of triangle
area+=dx*(y1-y2)/2;
//--- add area of rectangle
area+=dx*(y2-m_y_0);
}
}
}
//---
return(area);
}
//+------------------------------------------------------------------+
+414
View File
@@ -0,0 +1,414 @@
//+------------------------------------------------------------------+
//| PieChart.mqh |
//| Copyright 2009-2017, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#include "ChartCanvas.mqh"
//+------------------------------------------------------------------+
//| Class CPieChart |
//| Usage: generates pie chart |
//+------------------------------------------------------------------+
class CPieChart : public CChartCanvas
{
private:
//--- data
CArrayDouble *m_values;
//--- for draw
int m_x0;
int m_y0;
int m_r;
public:
CPieChart(void);
~CPieChart(void);
//--- create
virtual bool Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt=COLOR_FORMAT_XRGB_NOALPHA);
//--- data
bool SeriesSet(const double &value[],const string &text[],const uint &clr[]);
bool ValueAdd(const double value,const string descr="",const uint clr=0);
bool ValueInsert(const uint pos,const double value,const string descr="",const uint clr=0);
bool ValueUpdate(const uint pos,const double value,const string descr=NULL,const uint clr=0);
bool ValueDelete(const uint pos);
protected:
virtual void DrawChart(void);
void DrawPie(double fi3,double fi4,int idx,CPoint &p[],const uint clr);
string LabelMake(const string text,const double value,const bool to_left);
};
//+------------------------------------------------------------------+
//| Constructor |
//+------------------------------------------------------------------+
CPieChart::CPieChart(void)
{
uint flags=FLAG_SHOW_LEGEND|FLAG_SHOW_DESCRIPTORS|FLAG_SHOW_VALUE|FLAG_SHOW_PERCENT;
AllowedShowFlags(flags);
ShowFlags(flags);
}
//+------------------------------------------------------------------+
//| Destructor |
//+------------------------------------------------------------------+
CPieChart::~CPieChart(void)
{
}
//+------------------------------------------------------------------+
//| Create dynamic resource |
//+------------------------------------------------------------------+
bool CPieChart::Create(const string name,const int width,const int height,ENUM_COLOR_FORMAT clrfmt)
{
//--- create object to store data
if((m_values=new CArrayDouble)==NULL)
return(false);
//--- pass responsibility for its destruction to the parent class
m_data=m_values;
//--- call method of parent class
if(!CChartCanvas::Create(name,width,height,clrfmt))
return(false);
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Sets displayed parameters |
//+------------------------------------------------------------------+
bool CPieChart::SeriesSet(const double &value[],const string &text[],const uint &clr[])
{
//--- !!! user is responsible for correct filling of arrays !!!
//--- check
if(m_values==NULL)
return(false);
//--- set
if(!m_values.AssignArray(value))
return(false);
if(!m_descriptors.AssignArray(text))
return(false);
if(!m_colors.AssignArray(clr))
return(false);
m_data_total=m_values.Total();
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Adds displayed parameter (to the end) |
//+------------------------------------------------------------------+
bool CPieChart::ValueAdd(const double value,const string descr,const uint clr)
{
//--- check
if((value<=0))
return(false);
//--- add
if(!m_values.Add(value))
return(false);
if(!m_descriptors.Add(descr))
return(false);
if(!m_colors.Add((clr==0) ? GetDefaultColor(m_data_total) : clr))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Inserts displayed parameter (to specified position) |
//+------------------------------------------------------------------+
bool CPieChart::ValueInsert(const uint pos,const double value,const string descr,const uint clr)
{
//--- check
if((value<=0))
return(false);
//--- insert
if(!m_values.Insert(value,pos))
return(false);
if(!m_descriptors.Insert(descr,pos))
return(false);
if(!m_colors.Insert((clr==0) ? GetDefaultColor(m_data_total) : clr,pos))
return(false);
m_data_total++;
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Updates displayed parameter (in specified position) |
//+------------------------------------------------------------------+
bool CPieChart::ValueUpdate(const uint pos,const double value,const string descr,const uint clr)
{
//--- check
if((value<=0))
return(false);
//--- update
if(!m_values.Update(pos,value))
return(false);
if(descr!=NULL && !m_descriptors.Update(pos,descr))
return(false);
if(clr!=0 && !m_colors.Update(pos,clr))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Deletes displayed parameter (from specified position) |
//+------------------------------------------------------------------+
bool CPieChart::ValueDelete(const uint pos)
{
//--- delete
if(!m_values.Delete(pos))
return(false);
m_data_total--;
if(!m_descriptors.Delete(pos))
return(false);
if(!m_colors.Delete(pos))
return(false);
//--- redraw
Redraw();
//--- succeed
return(true);
}
//+------------------------------------------------------------------+
//| Draws |
//+------------------------------------------------------------------+
void CPieChart::DrawChart(void)
{
//--- check
if(m_data_total==0)
return;
//--- variables
string text="";
double angle=M_PI*(m_data_offset%360)/180;
int width,height;
int dw=0;
int dh=0;
int index;
CPoint p0[];
CPoint p1[];
//--- calculate geometry
width =(m_data_area.Width()<<3)/10;
height=(m_data_area.Height()<<3)/10;
if(IS_SHOW_LEGEND || !IS_SHOW_DESCRIPTORS)
{
if(IS_SHOW_VALUE)
dw=(int)m_max_value_width;
else
{
if(IS_SHOW_PERCENT)
dw=TextWidth("100.00%");
}
}
else
{
if(IS_SHOW_DESCRIPTORS)
{
if(IS_SHOW_VALUE)
dw=(int)m_max_value_width+TextWidth(" ()");
else
{
if(IS_SHOW_PERCENT)
dw=TextWidth(" (100.00%)");
}
dw+=(int)m_max_descr_width;
}
}
//--- pie chart will always be round
width -=2*dw+10;
height-=20;
m_x0=m_data_area.left+(m_data_area.Width()>>1);
m_y0=m_data_area.top+(m_data_area.Height()>>1);
m_r =(((width>height) ? height : width)>>1);
//--- draw pie chart
if(ArrayResize(p0,m_data_total+1)==-1)
return;
if(m_data_total==1)
{
FillCircle(m_x0,m_y0,m_r,m_colors[0]);
Circle(m_x0,m_y0,m_r,m_color_border);
}
else
{
Circle(m_x0,m_y0,m_r,m_color_border);
for(uint i=0;i<m_index_size;i++)
{
index=m_index[i];
double val=m_values[index];
double d_a=2*M_PI*val/m_sum;
DrawPie(angle,angle+d_a,i,p0,m_colors[index]);
angle+=d_a;
angle=MathMod(angle,2*M_PI);
}
if(m_data_total!=m_index_size)
DrawPie(angle,angle+2*M_PI*m_others/m_sum,m_index_size,p0,COLOR2RGB(clrBlack));
for(uint i=0;i<=m_index_size;i++)
Line(m_x0,m_y0,p0[i].x,p0[i].y,m_color_border);
Circle(m_x0,m_y0,m_r,m_color_border);
}
//--- draw descriptors
angle=M_PI*(m_data_offset%360)/180;
int r1=(int)round(1.1*m_r);
if(ArrayResize(p1,m_data_total)==-1)
return;
//--- calculations
for(uint i=0;i<m_index_size;i++)
{
index=m_index[i];
angle+=M_PI*m_values[index]/m_sum;
//--- lines
p0[i].x=m_x0+(int)round(m_r*cos(angle));
p0[i].y=m_y0-(int)round(m_r*sin(angle));
p1[i].x=m_x0+(int)round(r1*cos(angle));
p1[i].y=m_y0-(int)round(r1*sin(angle));
angle+=M_PI*m_values[index]/m_sum;
}
if(m_data_total!=m_index_size)
{
index=(int)m_data_total-1;
angle+=M_PI*m_others/m_sum;
p0[index].x=m_x0+(int)round(m_r*cos(angle));
p0[index].y=m_y0-(int)round(m_r*sin(angle));
p1[index].x=m_x0+(int)round(r1*cos(angle));
p1[index].y=m_y0-(int)round(r1*sin(angle));
}
int x,y;
//--- draw descriptors to the left
for(uint i=0;i<m_index_size;i++)
if(p0[i].x<m_x0)
{
x=p1[i].x-10;
y=p1[i].y;
index=m_index[i];
text=LabelMake(m_descriptors[index],m_values[index],true);
if(text!="")
{
Line(p0[i].x,p0[i].y,p1[i].x,p1[i].y,m_color_border);
Line(p1[i].x,p1[i].y,x,y,m_color_border);
TextOut(x-5,y,text,m_color_text,TA_RIGHT|TA_VCENTER);
}
}
//--- draw descriptors to the right
for(uint i=0;i<m_index_size;i++)
if(p0[i].x>=m_x0)
{
x=p1[i].x+10;
y=p1[i].y;
index=m_index[i];
text=LabelMake(m_descriptors[index],m_values[index],false);
if(text!="")
{
Line(p0[i].x,p0[i].y,p1[i].x,p1[i].y,m_color_border);
Line(p1[i].x,p1[i].y,x,y,m_color_border);
TextOut(x+5,y,text,m_color_text,TA_LEFT|TA_VCENTER);
}
}
if(m_data_total!=m_index_size)
{
index=(int)m_data_total-1;
if(p0[index].x>=m_x0)
{
x=p1[index].x+10;
y=p1[index].y;
text=LabelMake("Others",m_others,true);
TextOut(x+5,y,text,m_color_text,TA_LEFT|TA_VCENTER);
}
else
{
x=p1[index].x-10;
y=p1[index].y;
text=LabelMake("Others",m_others,false);
TextOut(x-5,y,text,m_color_text,TA_RIGHT|TA_VCENTER);
}
if(text!="")
{
Line(p0[index].x,p0[index].y,p1[index].x,p1[index].y,m_color_border);
Line(p1[index].x,p1[index].y,x,y,m_color_border);
}
}
ArrayFree(p1);
ArrayFree(p0);
}
//+------------------------------------------------------------------+
//| Draw pie |
//+------------------------------------------------------------------+
void CPieChart::DrawPie(double fi3,double fi4,int idx,CPoint &p[],const uint clr)
{
//--- draw arc
Arc(m_x0,m_y0,m_r,m_r,fi3,fi4,p[idx].x,p[idx].y,p[idx+1].x,p[idx+1].y,clr);
//--- variables
int x3=p[idx].x;
int y3=p[idx].y;
int x4=p[idx+1].x;
int y4=p[idx+1].y;
//--- draw radii
if(idx==0)
Line(m_x0,m_y0,x3,y3,clr);
if(idx!=m_data_total-1)
Line(m_x0,m_y0,x4,y4,clr);
//--- fill
double fi=(fi3+fi4)/2;
int xf=m_x0+(int)(0.99*m_r*cos(fi));
int yf=m_y0-(int)(0.99*m_r*sin(fi));
Fill(xf,yf,clr);
//--- for small pie
if(fi4-fi3<=M_PI_4)
Line(m_x0,m_y0,xf,yf,clr);
}
//+------------------------------------------------------------------+
//| Make label for pie |
//+------------------------------------------------------------------+
string CPieChart::LabelMake(const string text,const double value,const bool to_left)
{
string label="";
//---
if(to_left)
{
if(IS_SHOW_LEGEND || !IS_SHOW_DESCRIPTORS)
{
if(IS_SHOW_VALUE)
label=DoubleToString(value,2);
else
{
if(IS_SHOW_PERCENT)
label=DoubleToString(100*value/m_sum,2)+"%";
}
}
else
{
label=text;
if(IS_SHOW_VALUE)
label+=" ("+DoubleToString(value,2)+")";
else
{
if(IS_SHOW_PERCENT)
label+=" ("+DoubleToString(100*value/m_sum,2)+"%)";
}
}
}
else
{
if(IS_SHOW_LEGEND || !IS_SHOW_DESCRIPTORS)
{
if(IS_SHOW_VALUE)
label=DoubleToString(value,2);
else
{
if(IS_SHOW_PERCENT)
label=DoubleToString(100*value/m_sum,2)+"%";
}
}
else
{
if(IS_SHOW_VALUE)
label="("+DoubleToString(value,2)+") ";
else
{
if(IS_SHOW_PERCENT)
label="("+DoubleToString(100*value/m_sum,2)+"%) ";
}
label+=text;
}
}
//---
return(label);
}
//+------------------------------------------------------------------+