public void PaintOn(Graphics g, RectangleF _area)
{
GraphicsState _s = g.Save();
// _area is assumed to be provided in the same coordinate system as
// g.PageUnit provides. The plotting library works assuming that
// PageUnit is Inch, so we must transform the Rectangle into the
// appropriate rect.
PointF[] trans = new PointF[] {
new PointF(_area.Left, _area.Top),
new PointF(_area.Left + _area.Width, _area.Top + _area.Height)
};
g.TransformPoints(CoordinateSpace.Device, CoordinateSpace.Page, trans);
g.PageUnit = GraphicsUnit.Inch;
g.TransformPoints(CoordinateSpace.Page, CoordinateSpace.Device, trans);
AdvancedRect area = new AdvancedRect(trans[0], trans[1]);
using (Brush bg = background.CreateBrush())
g.FillRectangle(bg, area.Rect);
outerMargins.Apply(ref area);
//using (Brush tmp = new SolidBrush(Color.Red))
// g.FillRectangle(tmp, area.Rect);
SizeF headerSize = new SizeF(0, 0);
if (centerHeader != null)
{
using (Brush br = centerHeaderFont.CreateBrush())
using (Font f = centerHeaderFont.CreateFont())
{
headerSize = g.MeasureString(centerHeader, f);
g.DrawString(centerHeader, f, br, area.Center.X - (headerSize.Width / 2), area.TopLeft.Y);
}
}
if (rightHeader != null || leftHeader != null)
{
using (Brush left_br = leftHeaderFont.CreateBrush())
using (Font left_f = leftHeaderFont.CreateFont())
using (Brush right_br = rightHeaderFont.CreateBrush())
using (Font right_f = rightHeaderFont.CreateFont())
{
SizeF leftHeaderSize = (leftHeader != null) ? g.MeasureString(leftHeader, left_f) : new SizeF(0, 0);
SizeF rightHeaderSize = (rightHeader != null) ? g.MeasureString(rightHeader, right_f) : new SizeF(0, 0);
// determine y location = is this going to be aligned to the bottom of the center
// header, or underneath it? underneath is necessary if the two will hit each other.
float left_xLoc = area.TopLeft.X;
float right_xLoc = area.BottomRight.X - rightHeaderSize.Width;
float left_yLoc;
float right_yLoc;
if ((right_xLoc - 0.2f) < (area.Center.X + (headerSize.Width / 2)) ||
(left_xLoc + leftHeaderSize.Width + 0.2f) > (area.Center.X - (headerSize.Width / 2)))
{
// looks like we're too close - have to move down a bit.
left_yLoc = right_yLoc = area.TopLeft.Y + headerSize.Height;
headerSize.Height += Math.Max(rightHeaderSize.Height, leftHeaderSize.Height);
}
else
{
// We're good to place it next to the header.
// But, check our height - are the side headers bigger than the center header?
if (rightHeaderSize.Height > headerSize.Height || leftHeaderSize.Height > headerSize.Height)
{
// the side headers are bigger than the center header. Make enough room.
headerSize.Height = Math.Max(leftHeaderSize.Height, rightHeaderSize.Height);
}
right_yLoc = area.TopLeft.Y + (headerSize.Height - rightHeaderSize.Height);
left_yLoc = area.TopLeft.Y + (headerSize.Height - leftHeaderSize.Height);
}
if (rightHeader != null)
{
g.DrawString(rightHeader, right_f, right_br, right_xLoc, right_yLoc);
}
if (leftHeader != null)
{
g.DrawString(leftHeader, left_f, left_br, left_xLoc, left_yLoc);
}
}
}
if (headerSize.Height != 0)
{
area.TopLeft.Y += headerSize.Height;
area.TopLeft.Y += 0.1f;
}
if (displayLegend)
{
area.BottomRight.Y -= DrawLegend(g, area);
}
float yAxisWidthLeft = yAxes.CalculateWidthLeft(g);
float yAxisWidthRight = yAxes.CalculateWidthRight(g);
float xAxisHeight = xAxis.CalculateHeight(g, area.Width - yAxisWidthLeft - yAxisWidthRight);
AdvancedRect xAxisArea = area.Clone();
xAxisArea.TopLeft.X += yAxisWidthLeft;
xAxisArea.BottomRight.X -= yAxisWidthRight;
xAxisArea.TopLeft.Y = xAxisArea.BottomRight.Y - xAxisHeight;
// calculate internal data area
area.TopLeft.X += yAxisWidthLeft;
area.BottomRight.X -= yAxisWidthRight;
area.BottomRight.Y -= xAxisHeight;
yAxes.Draw(g, area);
xAxis.DrawX(g, xAxisArea, area);
series.Draw(g, yAxes, xAxis, area);
annotations.Draw(g, area);
using (Pen p = borderPen.CreatePen())
{
g.DrawLine(p, area.TopLeft.X, area.TopLeft.Y, area.TopLeft.X, area.BottomRight.Y);
g.DrawLine(p, area.TopLeft.X, area.TopLeft.Y, area.BottomRight.X, area.TopLeft.Y);
g.DrawLine(p, area.BottomRight.X, area.BottomRight.Y, area.BottomRight.X, area.TopLeft.Y);
g.DrawLine(p, area.BottomRight.X, area.BottomRight.Y, area.TopLeft.X, area.BottomRight.Y);
}
dataArea = area;
g.Restore(_s);
}