private bool DrawOhlc(int offset, int top, AxisXUnit unit, Color eraseColor)
{
double[] dValues = null;
bool bCheck = CheckBarsValue(offset, out dValues);
if (bCheck)
{
int iOpen = top + this.AxisY.ConvertValueToHeight(dValues[0]);
int iHigh = top + this.AxisY.ConvertValueToHeight(dValues[1]);
int iLow = top + this.AxisY.ConvertValueToHeight(dValues[2]);
int iClose = top + this.AxisY.ConvertValueToHeight(dValues[3]);
if (eraseColor != Color.Empty)
{
__cGDI.FillRectangle(eraseColor, unit.LeftPoint + 1, iHigh, (unit.RightPoint - unit.LeftPoint) - 1, iLow - iHigh + 1);
}
bool bOpenH = iOpen < iClose;
IntPtr cOldPtr = __cGDI.SelectPen((bOpenH) ? this.ChartSetting.PenStyles[1] : this.ChartSetting.PenStyles[0]);
__cGDI.DrawLine(unit.CenterPoint, iHigh, unit.CenterPoint, iLow);
__cGDI.DrawLine(unit.LeftPoint + 1, iOpen, unit.CenterPoint, iOpen);
__cGDI.DrawLine(unit.CenterPoint, iClose, unit.RightPoint, iClose);
__cGDI.RemoveObject(__cGDI.SelectPen(cOldPtr));
}
return(bCheck);
}
/// <summary>
/// 繪製 AxisX 座標軸
/// </summary>
/// <param name="axis">AxisX 座標軸</param>
/// <param name="property">Chart 屬性參數</param>
public override void DrawAxisX(AxisX axis, ChartProperty property)
{
uint uPattern = 0xaaaaaaaa; //格線樣式(Gdi.cs 內的 SelectPen 方法有定義格式, 格式皆由 Plugin 設計者自由規劃)
int iOldBKColor = __cGDI.SelectBackground(property.BackgroundColor);
IntPtr cOldPen = __cGDI.SelectPen(new PowerLanguage.PenStyle(property.GridColor, 1, (int)uPattern));
IntPtr cGridPen = __cGDI.SelectPen(new PowerLanguage.PenStyle(property.ForeColor, 1));
IntPtr cOldFont = __cGDI.SelectFont(property.AxisFont);
List <AxisXLabel> cAxises = axis.CalculateAxisScale();
Rectangle cRect = axis.AxisRectangle;
__cGDI.FillRectangle(property.BackgroundColor, cRect.Left, cRect.Top, cRect.Width, cRect.Height);
int iCount = cAxises.Count;
for (int i = 0; i < iCount; i++)
{
AxisXLabel cLabel = cAxises[i];
AxisXUnit cUnit = axis.ConvertBarNumberToWidth(cLabel.BarNumber);
int iAbsWidth = cRect.Left + cUnit.CenterPoint;
int iCharWidth = iAbsWidth + axis.FontMetrics.Width * 11; //MM/dd HH:mm (11 chars)
if (iCharWidth < cRect.Width)
{
__cGDI.DrawLine(iAbsWidth, cRect.Top, iAbsWidth, cRect.Top + 5);
__cGDI.DrawString(cLabel.Time.ToString((i == 0) ? "yyyy/MM/dd" : "MM/dd HH:mm"), property.ForeColor, iAbsWidth, cRect.Top + 5);
if (property.IsShowGrid)
{
//繪製格線(因為 AxisX 軸在最下方, 格線往上延伸即可)
IntPtr cAxisPen = __cGDI.SelectPen(cGridPen);
__cGDI.DrawLine(iAbsWidth, 0, iAbsWidth, cRect.Top);
__cGDI.SelectPen(cAxisPen);
}
}
}
__cGDI.RemoveObject(cGridPen);
__cGDI.RemoveObject(__cGDI.SelectPen(cOldPen));
__cGDI.RemoveObject(__cGDI.SelectFont(cOldFont));
__cGDI.SelectBackground(iOldBKColor);
}
public override bool DrawPlot(Layer layer, ChartProperty property, bool onlyUpdateLastBar)
{
AxisX cAxisX = layer.AxisX;
Rectangle cRectY = this.AxisY.AxisRectangle;
int iIndex = 0;
int iOldBKColor = __cGDI.SelectBackground(property.BackgroundColor);
if (onlyUpdateLastBar)
{
iIndex = cAxisX.BarNumber + cAxisX.BarCount - 1;
iIndex = (iIndex > cAxisX.DataCount) ? cAxisX.DataCount : iIndex;
int iOffset = this.ConvertAxisScaleIndexToOffset(iIndex);
AxisXUnit cUnit = cAxisX.ConvertBarNumberToWidth(iIndex);
if (!DrawOhlc(iOffset, cRectY.Y, cUnit, property.BackgroundColor))
{
return(false);
}
}
else
{
this.RefreshAxisY(property);
int iCount = cAxisX.BarCount;
int iStartIndex = cAxisX.BarNumber;
for (int i = 0; i < iCount; i++)
{
iIndex = iStartIndex + i;
if (iIndex > cAxisX.DataCount)
{
--iIndex;
break;
}
else
{
int iOffset = this.ConvertAxisScaleIndexToOffset(iIndex);
AxisXUnit cUnit = cAxisX.ConvertBarNumberToWidth(iIndex);
DrawOhlc(iOffset, cRectY.Y, cUnit, Color.Empty);
}
}
if (this.PlotIndex == 0) //Plot 索引值為 0 才印出標題(其他的索引就不需要再印出標題)
{
DrawTitle(cRectY, property);
}
}
if (!layer.Drawable)
{
layer.LegendIndex = iIndex;
if (this.ChartSetting.IsShowNewPrice) //是否要顯示新價格線
{
this.AxisY.Value = __cBars.Close[0]; //指定最新收盤價格
this.Painter.DrawAxisValueLabel(this.AxisY, this.ChartSetting.LegendColor, property);
}
}
this.DrawLegend(layer.LegendIndex, property);
__cGDI.SelectBackground(iOldBKColor);
return(true);
}
private void DrawTextObject(Layer layer, TextObject textObject, ChartProperty property, bool useROP)
{
AxisX cAxisX = layer.AxisX;
AxisY cAxisY = layer.AxisY;
Rectangle cRectY = cAxisY.AxisRectangle;
int iOldBackground = 0;
IntPtr iOldFont = IntPtr.Zero;
bool bUseBG = textObject.BGColor != property.BackgroundColor;
bool bUseFont = textObject.FontName != property.TextFont.Name || textObject.Size != property.TextFont.Size;
if (bUseBG)
{
iOldBackground = __cGDI.SelectBackground(textObject.BGColor);
}
else
{
iOldBackground = __cGDI.SelectTransparent();
}
if (bUseFont)
{
iOldFont = __cGDI.SelectFont(new Font(textObject.FontName, textObject.Size, textObject.Style));
}
int iX = 0, iY = 0;
ChartPoint cPoint = textObject.Location;
bool bAbsolute = textObject.AbsolutePosition;
if (bAbsolute)
{
iY = cRectY.Y + (int)cPoint.Price;
iX = cPoint.BarNumber.Value;
}
else
{
iY = cRectY.Y + cAxisY.ConvertValueToHeight(cPoint.Price) + 1;
AxisXUnit cUnit = cAxisX.ConvertBarNumberToWidth(cPoint.BarNumber.Value);
Size cSize = __cGDI.MeasureString(textObject.Text);
iY = CalculateYFromStyle(iY, cSize, textObject.VStyle);
iX = CalculateXFromStyle(cUnit.CenterPoint, cSize, textObject.HStyle);
}
Rectangle cLayerRect = layer.LayerRectangleWithoutAxisY;
if (useROP || bAbsolute)
{
__cGDI.BeginRopDraw();
__cGDI.DrawRopString(textObject.Text, textObject.Color, iX, iY);
__cGDI.EndRopDraw();
}
else
{
__cGDI.DrawString(textObject.Text, textObject.Color, iX, iY);
}
if (bUseFont)
{
__cGDI.RemoveObject(__cGDI.SelectFont(iOldFont));
}
if (bUseBG)
{
__cGDI.SelectBackground(iOldBackground);
}
else
{
__cGDI.ClearTransparent(iOldBackground);
}
}
public void Action(ChartParameter parameter)
{
__cGDI.ClearRops(true);
__cGDI.ClearRops(__cLineInfos, __cTextInfos, !parameter.Updated);
InputDeviceStatus cStatus = parameter.Status;
if (cStatus.Event == EInputDeviceEvent.MouseMove)
{
ZChart cChart = parameter.Chart;
AxisX cAxisX = cChart.AxisX;
ChartProperty cProperty = cChart.ChartProperty;
MouseEventArgs e = cStatus.GetCurrentMouseArgs();
int iOldBKColor = __cGDI.SelectBackground(cProperty.BackgroundColor);
IntPtr cOldFont = __cGDI.SelectFont(cProperty.AxisFont);
IntPtr cPen = Gdi.CreatePen(new PowerLanguage.PenStyle(cProperty.ForeColor, 1));
int iBarNumber = cAxisX.ConvertBarNumberFromX(e.X);
if (iBarNumber > cAxisX.DataCount)
{
return;
}
else
{
Rectangle cAxisXRect = cAxisX.AxisRectangle;
AxisXUnit cUnit = cAxisX.ConvertBarNumberToWidth(iBarNumber);
cAxisXRect.X = cUnit.CenterPoint;
cAxisXRect.Width = cAxisX.FontMetrics.Width * 12;
DateTime cDateTime = cAxisX.ConvertBarNumberToTime(iBarNumber);
__cLineInfos.Add(__cGDI.DrawRopLine(cPen, cUnit.CenterPoint, 0, cUnit.CenterPoint, cAxisXRect.Y));
__cTextInfos.Add(__cGDI.DrawRopString(cDateTime.ToString("MM/dd HH:mm"), cProperty.BackgroundColor, cProperty.ForeColor, 2, 5, cAxisXRect));
}
List <Layer> cLayers = cChart.Layers;
int iCount = cLayers.Count;
for (int i = 0; i < iCount; i++)
{
Layer cLayer = cLayers[i];
if (__cLineInfos.Count == 1 && cLayer.IsLayerScope(e.X, e.Y))
{
AxisY cAxisY = cLayer.AxisY;
Rectangle cAxisYRect = cAxisY.AxisRectangle;
cAxisYRect.Y = e.Y;
cAxisYRect.Height = cAxisY.FontMetrics.Height;
__cLineInfos.Add(__cGDI.DrawRopLine(cPen, 0, e.Y, cAxisYRect.X, e.Y));
__cTextInfos.Add(__cGDI.DrawRopString(Math.Round(cAxisY.ConvertValueFromY(e.Y), cAxisY.Decimals).ToString(), cProperty.BackgroundColor, cProperty.ForeColor, 5, 0, cAxisYRect));
}
cLayer.LegendIndex = iBarNumber;
__cEngine.DrawLegend(cLayer, cProperty);
}
__cGDI.RemoveObject(__cGDI.SelectFont(cOldFont));
__cGDI.SelectBackground(iOldBKColor);
}
//如果使用者使用十字線功能, 如果有在選擇繪圖功能會在 CustomPainter 屬性儲存繪圖功能的類別名稱
//如果有繪圖類別名稱就取出使用
string sName = parameter.CustomPainter;
if (__cCustomPainter == null && sName != null)
{
__cCustomPainter = parameter.Behavior.GetCustomAction(sName);
if (__cCustomPainter == null || !(__cCustomPainter is IDrawable))
{
parameter.CustomPainter = null;
}
}
if (__cCustomPainter != null)
{
__cCustomPainter.Action(parameter);
//如果繪圖類別名稱 == null 表示繪圖已經完畢
if (parameter.CustomPainter == null)
{
__cCustomPainter = null;
}
}
}