public void fillRoundRect(int x, int y, int width, int height, int d1, int d2)
{
int r1 = d1 / 2;
int r2 = d2 / 2;
System.Drawing.SolidBrush brush = new System.Drawing.SolidBrush(col);
graph.FillRectangle(brush, x + r1, y, width - d1, r2);
graph.FillRectangle(brush, x + r1, y + height - r2, width - d1, r2);
graph.FillRectangle(brush, x, y + r2, r1, height - d2);
graph.FillRectangle(brush, x + width - r1, y + r2, r1, height - d2);
graph.FillRectangle(brush, x + r1, y + r2, width - d1, height - d2);
graph.FillPie(brush, x, y, d1, d2, 180, 90);
graph.FillPie(brush, x + width - d1, y, d1, d2, 270, 90);
graph.FillPie(brush, x, y + height - d2, d1, d2, 90, 90);
graph.FillPie(brush, x + width - d1, y + height - d2, d1, d2, 0, 90);
}
void RenderPie(bool left, System.Drawing.Graphics g)
{
Pie pie = left ? _leftPie : _rightPie;
Label firstLabel = null;
Label lastLabel = null;
float startAngle = 0F;
for (int i = 0; i < pie.Blocks.Count; i++)
{
PieBlock block = pie.Blocks[i];
Label label = _labels.Find(p => p.Index == block.Index);
if (label == null)
{
continue;
}
if (i == 0)
{
firstLabel = label;
}
lastLabel = label;
g.FillPie(label.Brush, pie.X, pie.Y, pie.Width, pie.Height, startAngle, block.Percent);
startAngle += block.Percent;
}
if (firstLabel == null)
{
firstLabel = new Label()
{
Index = 0, Color = System.Drawing.Color.Gray, Name = ""
};
g.FillPie(firstLabel.Brush, pie.X, pie.Y, pie.Width, pie.Height, 0F, 1F);
}
g.DrawPie(new System.Drawing.Pen(firstLabel.Brush), pie.X, pie.Y, pie.Width, pie.Height, 0F, 360F);
//bottom labels
float bottomY = pie.Y + pie.Height + 15F;
if (left)
{
float bottomX = pie.X + 4F;
for (int i = 0; i < pie.Labels.Count; i++)
{
Label label = pie.Labels[i];
g.FillRectangle(label.Brush, bottomX, bottomY, Font.Height, Font.Height);
bottomX += Font.Height + 3F;
string text = label.Name;
System.Drawing.SizeF textSize = g.MeasureString(text, _font);
g.DrawString(text, _font, label.Brush, bottomX, bottomY + (_font.Height - textSize.Height) / 2F);
bottomX += textSize.Width + 10F;
if (!string.IsNullOrEmpty(label.Value))
{
text = label.Value;
bottomX -= 8F;
textSize = g.MeasureString(text, _font);
g.DrawString(text, _font, label.Brush, bottomX, bottomY + (_font.Height - textSize.Height) / 2F);
bottomX += textSize.Width + 10F;
}
}
}
else
{
float bottomX = pie.X + pie.Width - 4F;
for (int i = pie.Labels.Count - 1; i >= 0; i--)
{
Label label = pie.Labels[i];
string text = null;
System.Drawing.SizeF textSize;
if (!string.IsNullOrEmpty(label.Value))
{
text = label.Value;
textSize = g.MeasureString(text, _font);
bottomX -= textSize.Width;
g.DrawString(text, _font, label.Brush, bottomX, bottomY + (_font.Height - textSize.Height) / 2F);
bottomX -= 3F;
}
text = label.Name;
textSize = g.MeasureString(text, _font);
bottomX -= textSize.Width;
g.DrawString(text, _font, label.Brush, bottomX, bottomY + (_font.Height - textSize.Height) / 2F);
bottomX -= 3F;
bottomX -= Font.Height;
g.FillRectangle(label.Brush, bottomX, bottomY, Font.Height, Font.Height);
bottomX -= 10F;
}
}
}
protected override void RenderChart(System.Drawing.Graphics graphics, Palette palette, Bamboo.Css.StyleStack styleStack, System.Drawing.RectangleF rectangle, string title, Bamboo.DataStructures.Table table)
{
styleStack.PushTag("PieChart");
string backColor = (string)styleStack["BackColor"];
Bamboo.Css.Font font = (Bamboo.Css.Font)styleStack["Font"];
string foreColor = (string)styleStack["ForeColor"];
int padding = (int)styleStack["Padding"];
string[] colors = (string[])styleStack["Colors"];
//TODO put in stylesheet.
System.Drawing.Font titleFont = palette.Font(font.Name, font.Size * 1.2f, System.Drawing.FontStyle.Bold);
//TODO put in stylesheet.
System.Drawing.Font labelFont = palette.Font(font.Name, font.Size, System.Drawing.FontStyle.Bold);
System.Drawing.Pen backColorPen = palette.Pen(backColor);
System.Drawing.Brush backColorBrush = palette.Brush(backColor);
System.Drawing.Brush foreColorBrush = palette.Brush(foreColor);
// Background
graphics.DrawRectangle(backColorPen, rectangle.Left, rectangle.Top, rectangle.Width, rectangle.Height);
graphics.FillRectangle(backColorBrush, rectangle);
rectangle = new System.Drawing.RectangleF(rectangle.Left + padding, rectangle.Top + padding, rectangle.Width - padding - padding, rectangle.Height - padding - padding);
// Title
if (title != null)
{
rectangle = DrawTitle(title, titleFont, foreColorBrush, graphics, rectangle);
}
//TODO
// Legend
// rectangle = new System.Drawing.RectangleF(rectangle.Left, rectangle.Top, rectangle.Width - padding - padding, rectangle.Height);
Slice[] slices = new Slice[table.Rows.Count];
float sum = 0;
for (int i = 0; i < table.Rows.Count; i++)
{
Bamboo.DataStructures.Tuple row = table.Rows[i];
slices[i].Label = row[0].ToString();
float value = System.Convert.ToSingle(row[1]);
slices[i].Value = value;
sum += value;
}
sum /= 360;
float startAngle = -90;
for (int i = 0; i < slices.Length; i++)
{
slices[i].StartAngle = startAngle;
float sweepAngle = slices[i].Value / sum;
slices[i].SweepAngle = sweepAngle;
double startPlusHalfSweepRadian = DegreeToRadian(startAngle + (sweepAngle / 2));
slices[i].LabelCos = (float)Math.Cos(startPlusHalfSweepRadian);
slices[i].LabelSin = (float)Math.Sin(startPlusHalfSweepRadian);
System.Drawing.SizeF sizef = MeasureString(graphics, slices[i].Label, labelFont);
slices[i].LabelWidth = sizef.Width;
slices[i].LabelHeight = sizef.Height;
slices[i].Adjacent = slices[i].LabelCos * slices[i].LabelWidth;
slices[i].Opposite = slices[i].LabelSin * slices[i].LabelHeight;
slices[i].Hypotenuse = (float)Math.Sqrt((slices[i].Adjacent * slices[i].Adjacent) + (slices[i].Opposite * slices[i].Opposite));
slices[i].Brush = palette.Brush(colors[i % colors.Length]);
startAngle += sweepAngle;
}
float x_min = 0;
float x_max = 0;
float y_min = 0;
float y_max = 0;
for (int i = 0; i < slices.Length; i++)
{
x_min = Math.Min(x_min, slices[i].Adjacent);
x_max = Math.Max(x_max, slices[i].Adjacent);
y_min = Math.Min(y_min, slices[i].Opposite);
y_max = Math.Max(y_max, slices[i].Opposite);
}
float x_offset = Math.Max(Math.Abs(x_min), x_max);
float y_offset = Math.Max(Math.Abs(y_min), y_max);
rectangle = new System.Drawing.RectangleF(rectangle.Left + x_offset, rectangle.Top + y_offset, rectangle.Width - (x_offset * 2), rectangle.Height - (y_offset * 2));
float halfInnerWidth = rectangle.Width / 2;
float halfInnerHeight = rectangle.Height / 2;
float radius = Math.Min(halfInnerWidth, halfInnerHeight);
float diameter = radius + radius;
float x = rectangle.Left + halfInnerWidth - radius;
float y = rectangle.Top + halfInnerHeight - radius;
if (radius > 0)
{
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
for (int i = 0; i < slices.Length; i++)
{
graphics.FillPie(slices[i].Brush, x, y, diameter, diameter, slices[i].StartAngle, slices[i].SweepAngle);
float radiusPlusHalfHypotenuse = radius + slices[i].Hypotenuse / 2;
float labelLeft = x + radius - (slices[i].LabelWidth / 2) + (slices[i].LabelCos * radiusPlusHalfHypotenuse);
float labelTop = y + radius - (slices[i].LabelHeight / 2) + (slices[i].LabelSin * radiusPlusHalfHypotenuse);
//TODO use a style for Brush
DrawString(graphics, slices[i].Label, labelFont, foreColorBrush, labelLeft, labelTop);
}
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.Default;
}
styleStack.PopTag();
}