private void DrawLegend(Graphics g, float xCenter, float yCenter,
float hWidth, float hHeight, DataSeries ds, ChartStyle cs)
{
float spacing = 8.0f;
float textHeight = 8.0f;
float htextHeight = textHeight / 2.0f;
float lineLength = 12.0f;
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);
}
for (int i = 0; i < ds.DataList.Count; i++)
{
float xSymbol = legendRectangle.X + spacing + hlineLength;
float xText = legendRectangle.X + 2 * spacing + lineLength;
float yText = legendRectangle.Y + (i + 1) * spacing +
(2 * i + 1) * htextHeight;
aPen = new Pen(ds.BorderColor, ds.BorderThickness);
Color fillColor = Color.FromArgb(ds.CMap[i, 0], ds.CMap[i, 1],
ds.CMap[i, 2], ds.CMap[i, 3]);
aBrush = new SolidBrush(fillColor);
// Draw symbols:
float hsize = 5f;
PointF[] pts = new PointF[4];
pts[0] = new PointF(xSymbol - hsize, yText - hsize);
pts[1] = new PointF(xSymbol + hsize, yText - hsize);
pts[2] = new PointF(xSymbol + hsize, yText + hsize);
pts[3] = new PointF(xSymbol - hsize, yText + hsize);
g.FillPolygon(aBrush, pts);
g.DrawPolygon(aPen, pts);
// Draw text:
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Near;
g.DrawString((string)ds.LabelList[i], LegendFont,
new SolidBrush(TextColor),
new PointF(xText, yText - 8), sFormat);
}
}
aPen.Dispose();
aBrush.Dispose();
}
/*public void AddLabel(string str)
* {
* labelList.Clear();
* labelList.Add(str);
* }
*
* public void AddExplode(int nOffset)
* {
* explodeList.Clear();
* explodeList.Add(nOffset);
* }*/
public void AddPie(Graphics g, ChartStyle cs)
{
SolidBrush aBrush = new SolidBrush(Color.Black);
Pen aPen = new Pen(BorderColor);
int nData = DataList.Count;
float fSum = 0;
for (int i = 0; i < nData; i++)
{
fSum = fSum + (float)DataList[i];
}
float startAngle = 0;
float sweepAngle = 0;
Rectangle rect = cs.SetPieArea();
for (int i = 0; i < nData; i++)
{
Color fillColor = Color.FromArgb(CMap[i, 0], CMap[i, 1],
CMap[i, 2], CMap[i, 3]);
aBrush = new SolidBrush(fillColor);
int explode = (int)ExplodeList[i];
if (fSum < 1)
{
startAngle = startAngle + sweepAngle;
sweepAngle = 360 * (float)DataList[i];
}
else if (fSum >= 1)
{
startAngle = startAngle + sweepAngle;
sweepAngle = 360 * (float)DataList[i] / fSum;
}
int xshift = (int)(explode * Math.Cos((startAngle +
sweepAngle / 2) * Math.PI / 180));
int yshift = (int)(explode * Math.Sin((startAngle +
sweepAngle / 2) * Math.PI / 180));
Rectangle rect1 = new Rectangle(rect.X + xshift, rect.Y + yshift,
rect.Width, rect.Height);
g.FillPie(aBrush, rect1, startAngle, sweepAngle);
g.DrawPie(aPen, rect1, startAngle, sweepAngle);
}
}
public void AddLegend(Graphics g, DataSeries ds, ChartStyle cs)
{
if (ds.DataList.Count < 1)
{
return;
}
if (!IsLegendVisible)
{
return;
}
int numberOfDataValues = ds.DataList.Count;
string[] legendLabels = new string[ds.LabelList.Count];
for (int i = 0; i < ds.LabelList.Count; i++)
{
legendLabels[i] = (string)ds.LabelList[i];
}
// float offSet = 20;
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 + 35.0f;
float hWidth = legendWidth / 2;
float legendHeight = 18.0f * numberOfDataValues;
float hHeight = legendHeight / 2;
Rectangle rect = cs.SetPieArea();
xc = rect.X + rect.Width + cs.Offset + 20 + hWidth / 2;
yc = rect.Y + rect.Height / 2;
DrawLegend(g, xc, yc, hWidth, hHeight, ds, cs);
}
public ChartCanvas(CGRect rect) : base(rect)
{
ContentMode = UIViewContentMode.Redraw;
AutoresizingMask = UIViewAutoresizing.All;
BackColor = Color.Wheat;
PlotPanel = new PlotPanel(rect);
AddSubview(PlotPanel);
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint += PlotPanelPaint;
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint += PlotPanelPaint;
cs = new ChartStyle(this);
ds = new DataSeries();
lg = new Legend(this);
lg.IsLegendVisible = true;
}
public ChartCanvas(CGRect rect)
: base(rect)
{
ContentMode = UIViewContentMode.Redraw;
AutoresizingMask = UIViewAutoresizing.All;
BackColor = Color.Wheat;
PlotPanel = new PlotPanel (rect);
AddSubview (PlotPanel);
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint += PlotPanelPaint;
// Subscribing to a paint eventhandler to drawingPanel:
PlotPanel.Paint += PlotPanelPaint;
cs = new ChartStyle (this);
ds = new DataSeries ();
lg = new Legend (this);
lg.IsLegendVisible = true;
}
public void AddLegend(Graphics g, DataSeries ds, ChartStyle cs)
{
if (ds.DataList.Count < 1)
{
return;
}
if (!IsLegendVisible)
{
return;
}
int numberOfDataValues = ds.DataList.Count;
string[] legendLabels = new string[ds.LabelList.Count];
for (int i = 0; i < ds.LabelList.Count;i++)
{
legendLabels[i] = (string)ds.LabelList[i];
}
// float offSet = 20;
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 + 35.0f;
float hWidth = legendWidth / 2;
float legendHeight = 18.0f * numberOfDataValues;
float hHeight = legendHeight / 2;
Rectangle rect = cs.SetPieArea();
xc = rect.X + rect.Width + cs.Offset + 20 + hWidth / 2;
yc = rect.Y + rect.Height / 2;
DrawLegend(g, xc, yc, hWidth, hHeight, ds, cs);
}
private void DrawLegend(Graphics g, float xCenter, float yCenter,
float hWidth, float hHeight, DataSeries ds, ChartStyle cs)
{
float spacing = 8.0f;
float textHeight = 8.0f;
float htextHeight = textHeight / 2.0f;
float lineLength = 12.0f;
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);
}
for (int i = 0; i < ds.DataList.Count; i++)
{
float xSymbol = legendRectangle.X + spacing + hlineLength;
float xText = legendRectangle.X + 2 * spacing + lineLength;
float yText = legendRectangle.Y + (i + 1) * spacing +
(2 * i + 1) * htextHeight;
aPen = new Pen(ds.BorderColor, ds.BorderThickness);
Color fillColor = Color.FromArgb(ds.CMap[i, 0], ds.CMap[i, 1],
ds.CMap[i, 2], ds.CMap[i, 3]);
aBrush = new SolidBrush(fillColor);
// Draw symbols:
float hsize = 5f;
PointF[] pts = new PointF[4];
pts[0] = new PointF(xSymbol - hsize, yText - hsize);
pts[1] = new PointF(xSymbol + hsize, yText - hsize);
pts[2] = new PointF(xSymbol + hsize, yText + hsize);
pts[3] = new PointF(xSymbol - hsize, yText + hsize);
g.FillPolygon(aBrush, pts);
g.DrawPolygon(aPen, pts);
// Draw text:
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Near;
g.DrawString((string)ds.LabelList[i], LegendFont,
new SolidBrush(TextColor),
new PointF(xText, yText - 8), sFormat);
}
}
aPen.Dispose();
aBrush.Dispose();
}
public void AddPie(Graphics g, ChartStyle cs)
{
var aBrush = new SolidBrush (Color.Black);
var aPen = new Pen(BorderColor);
int nData = DataList.Count;
float fSum = 0;
for (int i = 0; i < nData; i++)
fSum = fSum + (float)DataList[i];
float startAngle = 0;
float sweepAngle = 0;
CGRect rect = cs.SetPieArea ();
for (int i = 0; i < nData; i++) {
Color fillColor = Color.FromArgb (CMap[i, 0], CMap[i, 1], CMap[i, 2], CMap[i, 3]);
aBrush = new SolidBrush(fillColor);
var explode = (int)ExplodeList[i];
if (fSum < 1) {
startAngle = startAngle + sweepAngle;
sweepAngle = 360 * (float)DataList[i];
} else if (fSum >= 1) {
startAngle = startAngle + sweepAngle;
sweepAngle = 360 * (float)DataList[i] / fSum;
}
var xshift = (int)(explode * Math.Cos((startAngle + sweepAngle / 2) * Math.PI / 180));
var yshift = (int)(explode * Math.Sin((startAngle + sweepAngle / 2) * Math.PI / 180));
var rect1 = new CGRect (rect.X + xshift, rect.Y + yshift, rect.Width, rect.Height);
g.FillPie (aBrush, (Rectangle)rect1, startAngle, sweepAngle);
g.DrawPie (aPen, (Rectangle)rect1, startAngle, sweepAngle);
}
}
public void AddLegend(Graphics g, DataSeries ds, ChartStyle cs)
{
if (ds.DataList.Count < 1)
return;
if (!IsLegendVisible)
return;
int numberOfDataValues = ds.DataList.Count;
string[] legendLabels = new string[ds.LabelList.Count];
for (int i = 0; i < ds.LabelList.Count; i++)
legendLabels[i] = (string)ds.LabelList[i];
float xc = 0f;
float yc = 0f;
CGSize size = g.MeasureString (legendLabels[0], LegendFont);
var legendWidth = (float)size.Width;
for (int i = 0; i < legendLabels.Length; i++) {
size = g.MeasureString (legendLabels[i], LegendFont);
var tempWidth = (float)size.Width;
if (legendWidth < tempWidth)
legendWidth = tempWidth;
}
legendWidth = legendWidth + 35f;
float hWidth = legendWidth / 2;
float legendHeight = 18f * numberOfDataValues;
float hHeight = legendHeight / 2;
CGRect rect = cs.SetPieArea ();
xc = (float)(rect.X + rect.Width + cs.Offset + 20 + hWidth / 2);
yc = (float)(rect.Y + rect.Height / 2);
DrawLegend (g, xc, yc, hWidth, hHeight, ds, cs);
}