public RectangleF Draw(Graphics g, int xPos, int yPos, ArrayList plots, float scale)
{
// determine max width and max height of label strings.
float maxHt = 0.0f;
float maxWd = 0.0f;
for (int i = 0; i < plots.Count; ++i)
{
IPlot p = (IPlot)plots[i];
float lHt = g.MeasureString(p.Label, FontScaler.scaleFont(font_, scale)).Height;
float lWd = g.MeasureString(p.Label, FontScaler.scaleFont(font_, scale)).Width;
if (lHt > maxHt)
{
maxHt = lHt;
}
if (lWd > maxWd)
{
maxWd = lWd;
}
}
float lineLength = 20.0f;
float lineHeight = maxHt;
float hSpacing = 5.0f * scale;
float vSpacing = 3.0f * scale;
float boxWidth = hSpacing * 3.0f + lineLength + maxWd;
float boxHeight = vSpacing * (float)(plots.Count + 1) + maxHt * (float)plots.Count;
float totalWidth = boxWidth;
float totalHeight = boxHeight;
// draw box..
if (BorderStyle == BorderType.Line)
{
g.FillRectangle(new SolidBrush(Color.White), xPos, yPos, boxWidth, boxHeight);
g.DrawRectangle(new Pen(Color.Black), xPos, yPos, boxWidth, boxHeight);
}
else if (BorderStyle == BorderType.Shadow)
{
float offset = 4.0f * (float)scale;
g.FillRectangle(new SolidBrush(Color.LightGray), xPos + offset, yPos + offset, boxWidth, boxHeight);
g.FillRectangle(new SolidBrush(Color.White), xPos, yPos, boxWidth, boxHeight);
g.DrawRectangle(new Pen(Color.Black), xPos, yPos, boxWidth, boxHeight);
totalWidth += offset;
totalHeight += offset;
}
/*
* else if ( this.BorderStyle == BorderType.Curved )
* {
* // TODO. make this nice.
* }
*/
else
{
// do nothing.
}
// now draw entries in box..
int unnamedCount = 0;
for (int i = 0; i < plots.Count; ++i)
{
IPlot p = (IPlot)plots[i];
float lineXPos = xPos + hSpacing;
float lineYPos = yPos + vSpacing + (float)i * (vSpacing + maxHt);
p.DrawLegendLine(g, new RectangleF(lineXPos, lineYPos, lineLength, lineHeight));
float textXPos = lineXPos + hSpacing + lineLength;
float textYPos = lineYPos;
string label = p.Label;
if (label == "")
{
unnamedCount += 1;
label = "Series " + unnamedCount.ToString();
}
g.DrawString(label, FontScaler.scaleFont(Font, scale),
new SolidBrush(Color.Black), textXPos, textYPos);
}
return(new RectangleF(xPos, yPos, totalWidth, totalHeight));
}