public DrawingView(CGRect rect)
: base(rect)
{
ContentMode = UIViewContentMode.Redraw;
AutoresizingMask = UIViewAutoresizing.All;
BackColor = Color.Wheat;
cs = new ChartStyle(this);
cs.XLimMin = 0f;
cs.XLimMax = 6f;
cs.YLimMin = -1.5f;
cs.YLimMax = 1.5f;
cs.XTick = 1f;
cs.YTick = .5f;
cs.XLabel = "This is X axis";
cs.YLabel = "This is Y axis";
cs.Title = "Sine and Cosine Chart";
lg = new Legend {
IsLegendVisible = true
};
dc = new DataCollection ();
}
public DrawingView(RectangleF rect)
: base(rect)
{
ContentMode = UIViewContentMode.Redraw;
this.AutoresizingMask = UIViewAutoresizing.All;
this.BackColor = Color.Wheat;
// Set Form1 size:
// this.Width = 350;
// this.Height = 300;
dc = new DataCollection();
cs = new ChartStyle(this);
cs.XLimMin = 0f;
cs.XLimMax = 6f;
cs.YLimMin = -1.5f;
cs.YLimMax = 1.5f;
cs.XTick = 1.0f;
cs.YTick = 0.5f;
cs.XLabel = "This is X axis";
cs.YLabel = "This is Y axis";
cs.Title = "Sine and Cosine Chart";
lg = new Legend();
lg.IsLegendVisible = true;
}
private void DrawLegend(Graphics g, float xCenter, float yCenter,
float hWidth, float hHeight, DataCollection dc, ChartStyle cs)
{
float spacing = 8.0f;
float textHeight = 8.0f;
float htextHeight = textHeight / 2.0f;
float lineLength = 30.0f;
float hlineLength = lineLength / 2.0f;
Rectangle legendRectangle;
Pen aPen = new Pen(LegendBorderColor, 1f);
SolidBrush aBrush = new SolidBrush(LegendBackColor);
if (isLegendVisible)
{
legendRectangle = new Rectangle((int)xCenter - (int)hWidth,
(int)yCenter - (int)hHeight,
(int)(2.0f * hWidth), (int)(2.0f * hHeight));
g.FillRectangle(aBrush, legendRectangle);
if (IsBorderVisible)
{
g.DrawRectangle(aPen, legendRectangle);
}
int n = 1;
foreach (DataSeries ds in dc.DataSeriesList)
{
// Draw lines and symbols:
float xSymbol = legendRectangle.X + spacing + hlineLength;
float xText = legendRectangle.X + 2 * spacing + lineLength;
float yText = legendRectangle.Y + n * spacing + (2 * n - 1) * htextHeight;
aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.Thickness);
aPen.DashStyle = ds.LineStyle.Pattern;
PointF ptStart = new PointF(legendRectangle.X + spacing, yText);
PointF ptEnd = new PointF(legendRectangle.X + spacing + lineLength, yText);
g.DrawLine(aPen, ptStart, ptEnd);
ds.SymbolStyle.DrawSymbol(g, new PointF(xSymbol, yText));
// Draw text:
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Near;
g.DrawString(ds.SeriesName, LegendFont, new SolidBrush(textColor),
new PointF(xText, yText - 8), sFormat);
n++;
}
}
aPen.Dispose();
aBrush.Dispose();
}
public void AddLegend(Graphics g, DataCollection dc, ChartStyle cs)
{
if (dc.DataSeriesList.Count < 1)
{
return;
}
if (!IsLegendVisible)
{
return;
}
int numberOfDataSeries = dc.DataSeriesList.Count;
string[] legendLabels = new string[dc.DataSeriesList.Count];
int n = 0;
foreach (DataSeries ds in dc.DataSeriesList)
{
legendLabels[n] = ds.SeriesName;
n++;
}
float offSet = 10;
float xc = 0f;
float yc = 0f;
SizeF size = g.MeasureString(legendLabels[0], LegendFont);
float legendWidth = size.Width;
for (int i = 0; i < legendLabels.Length; i++)
{
size = g.MeasureString(legendLabels[i], LegendFont);
float tempWidth = size.Width;
if (legendWidth < tempWidth)
legendWidth = tempWidth;
}
legendWidth = legendWidth + 50.0f;
float hWidth = legendWidth / 2;
float legendHeight = 18.0f * numberOfDataSeries;
float hHeight = legendHeight / 2;
switch (LegendPosition)
{
case LegendPositionEnum.East:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height / 2;
break;
case LegendPositionEnum.North:
xc = cs.PlotArea.X + cs.PlotArea.Width / 2;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.NorthEast:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.NorthWest:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.South:
xc = cs.PlotArea.X + cs.PlotArea.Width / 2;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.SouthEast:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.SouthWest:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.West:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height / 2;
break;
}
DrawLegend(g, xc, yc, hWidth, hHeight, dc, cs);
}
public void AddLegend(Graphics g, DataCollection dc, ChartStyle cs)
{
if (dc.DataSeriesList.Count < 1)
{
return;
}
if (!IsLegendVisible)
{
return;
}
int numberOfDataSeries = dc.DataSeriesList.Count;
string[] legendLabels = new string[dc.DataSeriesList.Count];
int n = 0;
foreach (DataSeries ds in dc.DataSeriesList)
{
legendLabels[n] = ds.SeriesName;
n++;
}
float offSet = 10;
float xc = 0f;
float yc = 0f;
SizeF size = g.MeasureString(legendLabels[0], LegendFont);
float legendWidth = size.Width;
for (int i = 0; i < legendLabels.Length; i++)
{
size = g.MeasureString(legendLabels[i], LegendFont);
float tempWidth = size.Width;
if (legendWidth < tempWidth)
{
legendWidth = tempWidth;
}
}
legendWidth = legendWidth + 50.0f;
float hWidth = legendWidth / 2;
float legendHeight = 18.0f * numberOfDataSeries;
float hHeight = legendHeight / 2;
switch (LegendPosition)
{
case LegendPositionEnum.East:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height / 2;
break;
case LegendPositionEnum.North:
xc = cs.PlotArea.X + cs.PlotArea.Width / 2;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.NorthEast:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.NorthWest:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + offSet + hHeight;
break;
case LegendPositionEnum.South:
xc = cs.PlotArea.X + cs.PlotArea.Width / 2;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.SouthEast:
xc = cs.PlotArea.X + cs.PlotArea.Width - offSet - hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.SouthWest:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height - offSet - hHeight;
break;
case LegendPositionEnum.West:
xc = cs.PlotArea.X + offSet + hWidth;
yc = cs.PlotArea.Y + cs.PlotArea.Height / 2;
break;
}
DrawLegend(g, xc, yc, hWidth, hHeight, dc, cs);
}