/// <summary>
///
/// </summary>
public override void Paint()
{
//calculate the size of fill
RectangleF bitmapRectangle = new RectangleF(0, 0, Bitmap.Width - 1, Bitmap.Height - 1);
DrawingElements.Add(new DrawBackGround(Color.White, bitmapRectangle));
RectangleF barArea = new RectangleF(1, 1, bitmapRectangle.Width - 2, bitmapRectangle.Height - 2);
double valueInQuickBar = ((GraphRange)GraphData.Ranges[0]).SumOfValues;
string displayValue = Convert.ToString(valueInQuickBar);
if (maxValue < valueInQuickBar)
{
maxValue = valueInQuickBar;
displayValue += "...";
}
if (maxValue == 0)
{
maxValue = 1;
}
double withOfBar = (barArea.Width / maxValue) * valueInQuickBar;
double widthOfLabel =
((SizeF)(Graphics.MeasureString(Convert.ToString(valueInQuickBar), textFont) + new SizeF(4, 4))).Width;
if (widthOfLabel > withOfBar)
{
withOfBar = widthOfLabel;
}
RectangleF barRectangle = new RectangleF(barArea.X, barArea.Y, (float)withOfBar, (float)barArea.Height);
//draw the fill
Graphics.FillRectangle(
new LinearGradientBrush(new PointF(0, 0),
new PointF(bitmapRectangle.X + bitmapRectangle.Width,
bitmapRectangle.Y + bitmapRectangle.Height),
((GraphRange)GraphData.Ranges[0]).SecondaryColor,
((GraphRange)GraphData.Ranges[0]).PrimaryColor), barRectangle);
Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black), 1), GraphMaths.ConvertToRectangle(barRectangle));
if (displayValue.EndsWith("..."))
{
Graphics.DrawLine(new Pen(new SolidBrush(((GraphRange)GraphData.Ranges[0]).PrimaryColor), 1),
new PointF(bitmapRectangle.X + bitmapRectangle.Width - 1, bitmapRectangle.Y + 2),
new PointF(bitmapRectangle.X + bitmapRectangle.Width - 1,
bitmapRectangle.Y + bitmapRectangle.Height - 2));
}
//draw the text
Graphics.DrawString(displayValue, textFont, new SolidBrush(textColor), barRectangle, textStringFormat);
base.Paint();
}
/// <summary>
/// Generates the title.
/// </summary>
private void GenerateTitle()
{
if (DrawTitle == true)
{
#if GRAPHDEBUG
DrawingElements.Add(new DrawRectangle(debugPen, TitleRectangle));
#endif
DrawingElements.Add(
new DrawString(GraphData.Title, TitleFont, new SolidBrush(TitleColor), TitleRectangle,
TitleStringFormat));
}
}
/// <summary>
/// The override for the Paint method. This method paints the graph onto the canvas.
/// </summary>
private void Construct()
{
Graphics.CompositingQuality = CompositingQuality.HighQuality;
Graphics.CompositingMode = CompositingMode.SourceOver;
Graphics.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
ImageAttributes ia = new ImageAttributes();
ia.SetGamma(50, ColorAdjustType.Brush);
DrawingElements.Add(new DrawBackGround(Color.White, GraphCanvasRectangle));
Pen outline = new Pen(new SolidBrush(Color.DarkGray));
//DrawingElements.Add(new DrawRectangle(outline, 0, 0, Bitmap.Width - 1, Bitmap.Height - 1));
#if GRAPHDEBUG
DrawingElements.Add(new DrawRectangle(debugPen, TitleRectangle));
DrawingElements.Add(new DrawRectangle(debugPen, LegendRectangle));
DrawingElements.Add(new DrawRectangle(debugPen, GraphRectangle));
#endif
//graph
Graphics.Clip = new Region(GraphRectangle);
//adjuct the rectangle to be square
if (GraphRectangle.Width > GraphRectangle.Height)
{
GraphRectangle =
new RectangleF(GraphRectangle.X + ((GraphRectangle.Width - GraphRectangle.Height)) / 2,
GraphRectangle.Y, GraphRectangle.Height, GraphRectangle.Height);
}
else
{
GraphRectangle =
new RectangleF(GraphRectangle.X, GraphRectangle.Y, GraphRectangle.Width, GraphRectangle.Width);
}
#if GRAPHDEBUG
DrawingElements.Add(
new DrawString(string.Format("Width={0}, Height={1}", GraphRectangle.Width, GraphRectangle.Height),
LegendFont, debugBrush, GraphRectangle, LegendStringFormat));
DrawingElements.Add(new DrawEllipse(debugPen, GraphRectangle));
#endif
float total = 0;
foreach (GraphRange gr in GraphData.Ranges)
{
total += (float)gr.SumOfValues;
}
float start = 0;
float end = 0;
float step = (360 / total);
RectangleF labelRectangle =
new RectangleF(GraphRectangle.X + (GraphRectangle.Width / 100 * 10),
GraphRectangle.Y + (GraphRectangle.Height / 100 * 10),
GraphRectangle.Width - (GraphRectangle.Width / 100 * 20),
GraphRectangle.Height - (GraphRectangle.Height / 100 * 20));
RectangleF pieRectangle =
new RectangleF(GraphRectangle.X + (GraphRectangle.Width / 100 * 20),
GraphRectangle.Y + (GraphRectangle.Height / 100 * 20),
GraphRectangle.Width - (GraphRectangle.Width / 100 * 40),
GraphRectangle.Height - (GraphRectangle.Height / 100 * 40));
PointF centrePie =
new PointF(pieRectangle.X + (pieRectangle.Width / 2), pieRectangle.Y + (pieRectangle.Height / 2));
ArrayList differedLabelDraw = new ArrayList();
foreach (GraphRange gr in GraphData.Ranges)
{
end = step * (float)gr.SumOfValues;
PointF centreLabel = GraphMaths.PointOnCircleF(Convert.ToInt32(start + (end / 2)), labelRectangle);
PointF edgeOfPie = GraphMaths.PointOnCircleF(Convert.ToInt32(start + (end / 2)), pieRectangle);
#if GRAPHDEBUG
DrawingElements.Add(new DrawLine(debugPen, centreLabel, centrePie));
DrawingElements.Add(new DrawPie(debugPen, pieRectangle, start - 90, end));
#endif
DrawingElements.Add(new DrawLine(outline, centreLabel, edgeOfPie));
DrawingElements.Add(
new FillPie(
new LinearGradientBrush(pieRectangle, gr.PrimaryColor, gr.SecondaryColor,
LinearGradientMode.ForwardDiagonal), pieRectangle, start - 90, end));
if (_textLabels == true)
{
DrawingElements.Add(new FillRectangle(new SolidBrush(Color.White),
GraphHelpers.TextRectangleFromCentre(Graphics, gr.Label,
LegendFont,
centreLabel)));
DrawingElements.Add(
new DrawString(gr.Label, LegendFont, new SolidBrush(Color.Black),
GraphHelpers.TextRectangleFromCentre(Graphics, gr.Label, LegendFont,
centreLabel), null));
}
else
{
DrawingElements.Add(new FillRectangle(new SolidBrush(Color.White),
GraphHelpers.TextRectangleFromCentre(Graphics,
gr.SumOfValues.
ToString("F"),
LegendFont,
centreLabel)));
DrawingElements.Add(
new DrawString(gr.SumOfValues.ToString("F"), LegendFont, new SolidBrush(Color.Black),
GraphHelpers.TextRectangleFromCentre(Graphics, gr.SumOfValues.ToString("F"),
LegendFont, centreLabel), null));
}
differedLabelDraw.Add(centreLabel);
start = start + end;
}
Graphics.ResetClip();
//title
if (DrawTitle == true)
{
#if GRAPHDEBUG
DrawingElements.Add(new DrawRectangle(debugPen, TitleRectangle));
#endif
DrawingElements.Add(
new DrawString(GraphData.Title, TitleFont, new SolidBrush(TitleColor), TitleRectangle,
TitleStringFormat));
}
//legend
if (DrawLegend == true)
{
//work out text height
int textHeight = (int)((Graphics.MeasureString("X", LegendFont).Height) / 100 * 120);
#if GRAPHDEBUG
DrawingElements.Add(
new DrawRectangle(debugPen, LegendRectangle.X, LegendRectangle.Y, LegendRectangle.Width - 1,
GraphData.Ranges.Count * textHeight));
#endif
DrawingElements.Add(new FillRectangle(new SolidBrush(Color.White),
LegendRectangle.X, LegendRectangle.Y,
LegendRectangle.Width - 1,
GraphData.Ranges.Count * textHeight));
int lentry = 0;
foreach (GraphRange gr in GraphData.Ranges)
{
RectangleF currentRectangle = new RectangleF(LegendRectangle.X + 20,
(textHeight * lentry++) + LegendRectangle.Y,
LegendRectangle.Width - 20,
textHeight);
RectangleF colorRectangle = currentRectangle;
colorRectangle.Offset(-20, 0);
colorRectangle.Width = 20;
#if GRAPHDEBUG
DrawingElements.Add(new DrawRectangle(debugPen, currentRectangle));
DrawingElements.Add(new DrawRectangle(debugPen, colorRectangle));
#endif
string lable = gr.Label;
if (lable.Length > 26)
{
lable = lable.Substring(0, 26);
}
string val = gr.SumOfValues.ToString("F");
DrawingElements.Add(new DrawString(
string.Format("{0} = {1}", lable, val),
LegendFont,
new SolidBrush(Color.Black),
currentRectangle,
LegendStringFormat));
char symbol = (char)162;
DrawingElements.Add(new DrawString(
symbol.ToString(),
new Font("Wingdings 2", 12),
new SolidBrush(gr.PrimaryColor),
colorRectangle,
LegendStringFormat));
}
DrawingElements.Add(
new DrawRectangle(outline, LegendRectangle.X, LegendRectangle.Y, LegendRectangle.Width - 1,
GraphData.Ranges.Count * textHeight));
}
}
/// <summary>
/// The chart paint method.
/// </summary>
public override void Paint()
{
DrawingElements.Add(new DrawBackGround(Color.White, GraphRectangle));
DrawLineGraph();
base.Paint();
}