public Bitmap GetMarkerBitmap(Graphics g,
GaugeMarkerStyle style, GradientFillColor fillColor, int width, int length)
{
Bitmap bitmap = FindBitmap(fillColor);
if (bitmap == null)
{
width = Math.Max(width, 3);
length = Math.Max(length, 3);
bitmap = new Bitmap(width, length, g);
_Bitmaps.Add(new BitmapEntry(fillColor, bitmap));
using (Graphics gBmp = Graphics.FromImage(bitmap))
{
gBmp.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle r = new Rectangle();
r.Height = length;
r.Width = width;
using (GraphicsPath path = GetMarkerPath(style, r))
FillMarkerPath(gBmp, path, r, style, fillColor);
}
}
return (bitmap);
}
public GaugeTickMark(GaugeScale scale, GaugeTickMarkRank rank,
GaugeMarkerStyle style, float width, float length, double interval)
: base(scale, rank, style, width, length)
{
_Interval = interval;
_DefaultInterval = interval;
}
public TickMarkLayout(GaugeMarkerStyle style, float width, float length)
{
_Style = style;
_Width = width;
_Length = length;
_DefaultStyle = style;
_DefaultWidth = width;
_DefaultLength = length;
_Placement = DisplayPlacement.Center;
FillColor = new GradientFillColor(Color.DarkGray, Color.White);
FillColor.BorderColor = Color.DimGray;
FillColor.BorderWidth = 1;
_Overlap = GaugeTickMarkOverlap.ReplaceAll;
}
public GaugeTickMarkBase(GaugeScale scale,
GaugeTickMarkRank rank, GaugeMarkerStyle style, float width, float length)
: this(scale, rank, new TickMarkLayout(style, width, length))
{
}
internal void FillMarkerPath(Graphics g, GraphicsPath path,
Rectangle r, GaugeMarkerStyle style, GradientFillColor fillColor)
{
GradientFillType fillType = GetMarkerFillType(style, fillColor);
switch (fillType)
{
case GradientFillType.Angle:
using (Brush br = fillColor.GetBrush(r))
{
if (br is LinearGradientBrush)
((LinearGradientBrush)br).WrapMode = WrapMode.TileFlipXY;
g.FillPath(br, path);
}
break;
case GradientFillType.StartToEnd:
using (Brush br = fillColor.GetBrush(r, 90))
{
if (br is LinearGradientBrush)
((LinearGradientBrush)br).WrapMode = WrapMode.TileFlipXY;
g.FillPath(br, path);
}
break;
case GradientFillType.HorizontalCenter:
r.Height /= 2;
if (r.Height <= 0)
r.Height = 1;
using (LinearGradientBrush br = new
LinearGradientBrush(r, fillColor.Start, fillColor.End, 90))
{
br.WrapMode = WrapMode.TileFlipXY;
g.FillPath(br, path);
}
break;
case GradientFillType.VerticalCenter:
r.Width /= 2;
if (r.Width <= 0)
r.Width = 1;
using (LinearGradientBrush br = new
LinearGradientBrush(r, fillColor.Start, fillColor.End, 0f))
{
br.WrapMode = WrapMode.TileFlipXY;
g.FillPath(br, path);
}
break;
case GradientFillType.Center:
using (PathGradientBrush br = new PathGradientBrush(path))
{
br.CenterColor = fillColor.Start;
br.SurroundColors = new Color[] { fillColor.End };
g.FillPath(br, path);
}
break;
default:
using (Brush br = new SolidBrush(fillColor.Start))
g.FillPath(br, path);
break;
}
if (fillColor.BorderWidth > 0)
{
using (Pen pen = new Pen(fillColor.BorderColor, fillColor.BorderWidth))
{
pen.Alignment = PenAlignment.Inset;
g.DrawPath(pen, path);
}
}
}
internal GraphicsPath GetMarkerPath(GaugeMarkerStyle style, Rectangle r)
{
r.Inflate(-1, -1);
if (r.Width > 0 && r.Height > 0)
{
switch (style)
{
case GaugeMarkerStyle.Circle:
return (GetCirclePath(r));
case GaugeMarkerStyle.Diamond:
return (GetDiamondPath(r));
case GaugeMarkerStyle.Hexagon:
return (GetPolygonPath(r, 6, 90));
case GaugeMarkerStyle.Pentagon:
return (GetPolygonPath(r, 5, 90));
case GaugeMarkerStyle.Rectangle:
return (GetRectanglePath(r));
case GaugeMarkerStyle.Star5:
return (GetStarPath(r, 5));
case GaugeMarkerStyle.Star7:
return (GetStarPath(r, 7));
case GaugeMarkerStyle.Trapezoid:
return (GetTrapezoidPath(r));
case GaugeMarkerStyle.Triangle:
return (GetTrianglePath(r));
case GaugeMarkerStyle.Wedge:
return (GetWedgePath(r));
default:
return (GetRectanglePath(r));
}
}
return (null);
}
private GradientFillType GetMarkerFillType(GaugeMarkerStyle style, GradientFillColor fillColor)
{
if (fillColor.End.IsEmpty == true)
return (GradientFillType.None);
if (fillColor.GradientFillType == GradientFillType.Auto)
{
switch (style)
{
case GaugeMarkerStyle.Circle:
case GaugeMarkerStyle.Star5:
case GaugeMarkerStyle.Star7:
return (GradientFillType.Center);
default:
return (GradientFillType.VerticalCenter);
}
}
return (fillColor.GradientFillType);
}
public void ResetStyle()
{
Style = _DefaultStyle;
}
