internal void UpdateValues()
{
Debug.Assert(_values.Count == _items.Count);
_values.Start();
foreach (InfoPanelItem item in _items)
{
Label label = _values.GetPaintObject();
label._textBlock.Text = item.ValueEx;
}
_values.Stop();
}
public static Label DrawText(double x, double y, string text, Brush foreground, double fontSize, FontFamily fontFamily,
PaintObjectsManager <Label> labels)
{
Label label = labels.GetPaintObject();
label._textBlock.Text = text;
label._textBlock.Foreground = foreground;
label._textBlock.FontSize = fontSize;
label._textBlock.FontFamily = fontFamily;
label.Left = x;
label.Top = y;
return(label);
}
internal void Render()
{
if (_linesPath == null)
{
_linesPath = new Path
{
StrokeThickness = 1
};
Children.Add(_linesPath);
SetZIndex(_linesPath, ZIndexConstants.GridLines);
_linesPath.SetBinding(Shape.StrokeProperty, _chartPanel._chartX.CreateOneWayBinding("GridStroke"));
}
_labels.C = this;
_labels.Start();
Rect rcBounds = new Rect(0, 0, ActualWidth, ActualHeight);
if (Utils.GetIsInDesignMode(this))
{
_min = 0;
_max = 1;
}
if (rcBounds.Height < 2)
{
return;
}
//int decimals = _chartPanel._hasVolume ? 0 : _chartPanel._chartX.ScalePrecision;
string formatString = _chartPanel.FormatYValueString;
bool isVolume = _chartPanel._hasVolume; // && (_chartPanel._chartX.VolumePostfixLetter.Length > 0);
double k = rcBounds.Height / LabelCount;
double min = _chartPanel.ScalingType == ScalingTypeEnum.Linear || isVolume
? _min
: (_min > 0 ? Math.Log10(_min) : 0);
double max = _chartPanel.ScalingType == ScalingTypeEnum.Linear || isVolume ? _max : Math.Log10(_max);
double startValue = min + (max - min) * (_chartPanel._yOffset / rcBounds.Height);
GridStep = (max - min) / LabelCount;
_chartPanel.StartPaintingYGridLines();
GeometryGroup gLines = new GeometryGroup();
StringBuilder stringBuilder = new StringBuilder();
double textHeight = _chartPanel._chartX.GetTextHeight("9");
for (int i = 0; i < LabelCount; i++)
{
double y = rcBounds.Height - (i * k);
if (double.IsNaN(y))
{
continue;
}
if (y < 0)
{
break;
}
if (i > 0)
{
gLines.Children.Add(new LineGeometry
{
StartPoint = new Point(_isLeftAligned ? rcBounds.Width - 10 : 0, y),
EndPoint = new Point(_isLeftAligned ? rcBounds.Width : 10, y),
});
_chartPanel.PaintYGridLine(y);
}
stringBuilder.Length = 0;
double value = startValue + (GridStep * i);
if (_chartPanel.ScalingType == ScalingTypeEnum.Semilog && !isVolume)
{
value = Math.Pow(10, value);
}
if (isVolume)
{
value /= _chartPanel._chartX.VolumeDivisor;
}
stringBuilder.AppendFormat(formatString, value);
if (isVolume && !string.IsNullOrEmpty(_chartPanel._chartX.VolumePostfixLetter))
{
stringBuilder.Append(" ").Append(_chartPanel._chartX.VolumePostfixLetter);
}
if (!string.IsNullOrEmpty(_chartPanel.YAxisPostFix))
{
stringBuilder.Append(_chartPanel.YAxisPostFix);
}
Label tb = _labels.GetPaintObject();
tb.Text = stringBuilder.ToString();
tb.Left = _isLeftAligned ? rcBounds.Width -
_chartPanel._chartX.GetTextWidth(stringBuilder.ToString()) - 2 : 2;
tb.Top = y - textHeight - 2;
}
gLines.Children.Add(new LineGeometry
{
StartPoint = new Point(_isLeftAligned ? rcBounds.Width - 1 : 1, 0),
EndPoint = new Point(_isLeftAligned ? rcBounds.Width - 1 : 1, rcBounds.Height),
});
_chartPanel.StopPaintingYGridLines();
_painted = true;
_labels.Stop();
_linesPath.Data = gLines;
}
internal void Paint()
{
try
{
if (_painting)
{
return;
}
_painting = true;
_timerRepaint.StopTimerWork(TimerRepaint);
#if WPF
#if DEMO
if (!string.IsNullOrEmpty(_demoText) && _labelDemo == null)
{
_labelDemo = new Label();
_labelDemo.AddTo(this);
_labelDemo.Left = 10;
_labelDemo.Top = 2;
// _labelDemo._textBlock.Opacity = 0.7;
_labelDemo._textBlock.Foreground = Brushes.Red;
_labelDemo.Text = _demoText;
_labelDemo._textBlock.FontSize = 16;
_labelDemo.ZIndex = 100;
}
#endif
#endif
Rect rcBounds = new Rect(0, 0, ActualWidth, ActualHeight);
if (_linesPath == null)
{
_linesPath = new Path
{
Stroke = _chartX.GridStroke,
StrokeThickness = 1,
};
Children.Add(_linesPath);
}
//Background = _chartX.Background;
//_lines.C = this;
_labels.C = this;
//_lines.Start();
_labels.Start();
int startIndex = _chartX._startIndex;
GeometryGroup lines = new GeometryGroup();
//Utils.DrawLine(rcBounds.Left, 0, rcBounds.Right, 0, _chartX.GridStroke, LinePattern.Solid, 1, _lines);
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(rcBounds.Left, 0),
EndPoint = new Point(rcBounds.Right, 0),
});
int rcnt = _chartX.VisibleRecordCount;
double periodPixels = _chartX.GetXPixel(rcnt) / rcnt;
if (periodPixels < 1)
{
periodPixels = 1;
}
_chartX._xGridMap.Clear();
double tradeWeek = periodPixels * 5; // 5 trading days in a week (avg)
double tradeMonth = periodPixels * 20; // 20 trading days in a month (avg)
double tradeYear = periodPixels * 253; // 253 trading days in a year (avg)
double averageCharWidth = _chartX.GetTextWidth("0");
// Level 1:
// YYYY
double level1 = averageCharWidth * 4;
// Level 2:
// YY F M A M J J A S O N D
double level2 = averageCharWidth * 2;
// Level 3:
// YY Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
double level3 = averageCharWidth * 3;
// Level 4:
// YYYY February March April May June July August September October November December
double level4 = averageCharWidth * 9;
// Level 5:
// From -5 periods on right end, begin:
// Jan DD Feb DD Mar DD Apr DD May DD Jun DD Jul DD Aug DD Sep DD Oct DD Nov DD Dec DD
double level5 = averageCharWidth * 6;
// Level 6
// Jan DD HH:MM
double level6 = averageCharWidth * 10;
double incr;
int xGrid = 0;
double x, lx = 0;
if (_chartX.RealTimeXLabels)
{
string prevDay = "";
incr = level6;
string timeFormat = "HH:mm";
if (_chartX.ShowSeconds)
{
incr += averageCharWidth * 2;
timeFormat = "HH:mm:ss";
}
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
if (x == lx)
{
continue;
}
DateTime dDate = DM.GetTimeStampByIndex(period + startIndex);
//if (dDate.Minute % 15 != 0) continue;
if (incr > level6)
{
incr = 0;
//Draw vertical line
//_renderDevice.PlotUnitSeparator((float)x, true, 0);
//Utils.DrawLine(x, 0, x, rcBounds.Height / 2, _chartX.GridStroke, LinePattern.Solid, 1, _lines);
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
string szTime = dDate.ToString(timeFormat);
string szDay = dDate.ToString("dd");
string szMonth = dDate.ToString("MMM");
string szDate;
if (prevDay != szDay)
{
prevDay = szDay;
szDate = szMonth + " " + szDay + " " + szTime;
level6 = averageCharWidth * 12;
lx += level6 / 2;
}
else
{
szDate = szTime;
}
//_renderDevice.PlotUnitText((float)x, szDate, 0);
var lb = _labels.GetPaintObject();
lb.Left = x;
lb.Top = 1;
lb.Text = szDate;
//Utils.DrawText(x, 1, szDate, _chartX.FontForeground, _chartX.FontSize, _chartX.FontFamily, _labels);
_chartX._xGridMap[xGrid++] = x;
}
incr += x - lx;
lx = x;
}
_painting = false;
_linesPath.Data = (System.Windows.Media.Geometry)lines.GetAsFrozen();
//_lines.Stop();
_labels.Stop();
return;
}
lx = 0;
double oldX = -1;
string sCache = "#";
string sDate;
DateTime timestamp;
DateTime?prevDate = null;
if (level5 <= tradeWeek)
{
incr = level5;
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
timestamp = DM.GetTimeStampByIndex(period + startIndex);
if (prevDate.HasValue && prevDate.Value.Year != timestamp.Year)
{
sDate = timestamp.ToString("yyyy MMM");
}
else
{
sDate = timestamp.ToString("dd MMM");
}
prevDate = timestamp;
if (incr > level5 && sCache != sDate && oldX != x)
{
incr = 0; //Reset
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
var lb = _labels.GetPaintObject();
lb.Left = x + 2;
lb.Top = 1;
lb.Text = sDate;
sCache = sDate;
oldX = x;
_chartX._xGridMap[xGrid++] = x;
}
incr += (x - lx);
lx = x;
}
}
else if (level4 <= tradeMonth)
{
incr = level4;
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
timestamp = DM.GetTimeStampByIndex(period + startIndex);
sDate = timestamp.ToString("MMMM");
if (timestamp.Month == 1)
{
sDate = timestamp.ToString("yyyy MMM");
}
if (incr > level4 && sDate != sCache)
{
incr = 0;
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
var lb = _labels.GetPaintObject();
lb.Left = x;
lb.Top = 1;
lb.Text = sDate;
xGrid++;
}
sCache = sDate;
incr += (x - lx);
lx = x;
_chartX._xGridMap[xGrid] = x;
}
}
else if (level3 + 2 <= tradeMonth)
{
incr = level3;
sCache = "#";
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
timestamp = DM.GetTimeStampByIndex(period + startIndex);
sDate = timestamp.ToString("MMM");
if (timestamp.Month == 1)
{
sDate = timestamp.ToString("yy");
}
if (incr > level3 && sCache != sDate)
{
incr = 0;
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
var lb = _labels.GetPaintObject();
lb.Left = x;
lb.Top = 1;
lb.Text = sDate;
xGrid++;
}
sCache = sDate;
incr += (x - lx);
lx = x;
_chartX._xGridMap[xGrid] = x;
}
}
else if (level2 <= tradeMonth)
{
incr = level2;
sCache = "#";
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
timestamp = DM.GetTimeStampByIndex(period + startIndex);
sDate = timestamp.ToString("MMM");
string sTemp;
if (timestamp.Month == 1)
{
sDate = timestamp.ToString("yy");
sTemp = sDate;
}
else
{
sTemp = sDate.Substring(0, 1);
}
if (incr > level2 && sCache != sDate)
{
incr = 0;
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
var lb = _labels.GetPaintObject();
lb.Left = x;
lb.Top = 1;
lb.Text = sTemp;
xGrid++;
}
sCache = sDate;
incr += (x - lx);
lx = x;
_chartX._xGridMap[xGrid] = x;
}
}
else if (level1 <= tradeYear)
{
incr = level1;
sCache = "#";
for (int period = 0; period < rcnt; period++)
{
x = _chartX.GetXPixel(period);
if (x == -1)
{
break;
}
timestamp = DM.GetTimeStampByIndex(period + startIndex);
sDate = timestamp.ToString("yyyy");
if (incr > level1 && sDate != sCache)
{
incr = 0;
lines.Children.Add(new LineGeometry
{
StartPoint = new Point(x, 0),
EndPoint = new Point(x, rcBounds.Height / 2)
});
var lb = _labels.GetPaintObject();
lb.Left = x;
lb.Top = 1;
lb.Text = sDate;
xGrid++;
}
sCache = sDate;
incr += (x - lx);
lx = x;
_chartX._xGridMap[xGrid] = x;
}
}
//_lines.Stop();
_linesPath.Data = (System.Windows.Media.Geometry)lines.GetAsFrozen();
_labels.Stop();
}
finally
{
_painting = false;
//after calendar is painted must instruct each panel to repaint the X Grid if needed
if (_chartX.XGrid)
{
foreach (var panel in _chartX.PanelsCollection)
{
panel.PaintXGrid();
}
}
}
}
internal void RecalculateLayout()
{
Debug.Assert(_chartX != null);
_values.Start();
_labels.Start();
_values.C = this;
_labels.C = this;
double labelsMaxWidth = double.MinValue;
double valuesMaxWidth = double.MinValue;
double valuesNoCaptionMaxWidth = double.MinValue;
int valueIndex;
_entries.Clear();
foreach (InfoPanelItem item in _items)
{
_entries.Add(new Tuple <string, string>(item.Caption, item.ValueEx));
if (!item._noCaption)
{
Label labelCaption = _labels.GetPaintObject();
labelCaption._textBlock.Text = item.Caption;
labelCaption._textBlock.FontFamily = _chartX.InfoPanelFontFamily;
labelCaption._textBlock.FontSize = _chartX.InfoPanelFontSize;
labelCaption._textBlock.Foreground = _chartX.InfoPanelLabelsForeground;
SetZIndex(labelCaption._textBlock, 5);
}
Label labelValue = _values.GetPaintObject();
labelValue._textBlock.Text = item.ValueEx;
labelValue._textBlock.FontFamily = _chartX.InfoPanelFontFamily;
labelValue._textBlock.FontSize = _chartX.InfoPanelFontSize;
labelValue._textBlock.Foreground = _chartX.InfoPanelValuesForeground;
SetZIndex(labelValue._textBlock, 5);
}
_values.Stop();
_labels.Stop();
int labelIndex = valueIndex = 0;
double top = 1;
foreach (InfoPanelItem item in _items)
{
Label labelValue = _values[valueIndex++];
if (!item._noCaption)
{
Label labelCaption = _labels[labelIndex++];
if (labelCaption._textBlock.ActualWidth > labelsMaxWidth)
{
labelsMaxWidth = labelCaption._textBlock.ActualWidth;
}
SetLeft(labelCaption._textBlock, 1);
SetTop(labelCaption._textBlock, top - 1);
}
top += labelValue._textBlock.ActualHeight + 2;
}
top = 1;
valueIndex = 0;
foreach (InfoPanelItem item in _items)
{
Label labelValue = _values[valueIndex++];
if (item._noCaption)
{
SetLeft(labelValue._textBlock, 2);
if (labelValue._textBlock.ActualWidth > valuesNoCaptionMaxWidth)
{
valuesNoCaptionMaxWidth = labelValue._textBlock.ActualWidth;
}
}
else
{
SetLeft(labelValue._textBlock, labelsMaxWidth + 3);
if (labelValue._textBlock.ActualWidth > valuesMaxWidth)
{
valuesMaxWidth = labelValue._textBlock.ActualWidth;
}
}
SetTop(labelValue._textBlock, top - 1);
top += labelValue._textBlock.ActualHeight + 2;
}
double maxWidth = labelsMaxWidth + valuesMaxWidth + 4;
Width = Math.Max(maxWidth, valuesNoCaptionMaxWidth);
if (_rectLabels == null)
{
_rectLabels = new Rectangle {
Stroke = null, StrokeThickness = 0
};
Children.Add(_rectLabels);
_rectValues = new Rectangle {
Stroke = null, StrokeThickness = 0
};
Children.Add(_rectValues);
}
SetLeft(_rectLabels, 0);
SetTop(_rectLabels, 0);
_rectLabels.Width = labelsMaxWidth + 2;
_rectLabels.Height = top;
_rectLabels.Fill = _chartX.InfoPanelLabelsBackground;
SetLeft(_rectValues, GetLeft(_rectLabels) + _rectLabels.Width);
SetTop(_rectValues, 0);
_rectValues.Width = Math.Max(maxWidth, valuesNoCaptionMaxWidth) - labelsMaxWidth + 2;
_rectValues.Height = top;
_rectValues.Fill = _chartX.InfoPanelValuesBackground;
Height = top;
}
