private void CreateBrushInternal()
{
m_location = m_rect.Location;
m_size = m_rect.Size;
m_center = new Point(m_location.X + (m_size.Width / 2), m_location.Y + (m_size.Height / 2));
if (m_size.Height < 16 || m_size.Width < 16)
{
m_factor = 0.25f;
}
if (m_size.Height < 35 || m_size.Width < 35)
{
m_factor = 0.5f;
}
else
{
m_factor = 1;
}
//m_gradient *= m_factor;
double dX = ((double)m_size.Width / (10f * m_factor)) / 4f;
double dY = ((double)m_size.Height / (10f * m_factor)) / 4f;
double pX = m_gradient / dX;
double pY = m_gradient / dY;
double gX = pX / m_gradient;
double gY = pY / m_gradient;
double gradient = m_gradient / (float)(40f / 2f);
double gradW = 4f / ((float)m_size.Width / 2f);
double gradH = 4f / ((float)m_size.Height / 2f);
double gradX = 1 - gX;
double gradY = 1 - gY;
float ray = m_rounded / 2;
// double alpha = 45 * (Math.PI / 180);
// float delta = (float)(ray * Math.Sin(alpha));
//
// PointF[] pts = new PointF[17]
// {
// /* 0 */ new PointF(m_center.X,m_location.Y),
// /* 1 */ new PointF(m_rect.Right-ray,m_location.Y),
// /* 2 */ new PointF((m_rect.Right-ray)+delta,m_location.Y+(ray-delta)),
// /* 3 */ new PointF(m_rect.Right,m_location.Y+ray),
// /* 4 */ new PointF(m_rect.Right,m_center.Y),
// /* 5 */ new PointF(m_rect.Right,m_rect.Bottom-ray),
// /* 6 */ new PointF((m_rect.Right-ray)+delta,m_rect.Bottom-(ray-delta)),
// /* 7 */ new PointF(m_rect.Right-ray,m_rect.Bottom),
// /* 8 */ new PointF(m_center.X,m_rect.Bottom),
// /* 9 */ new PointF(m_location.X+ray,m_rect.Bottom),
// /* 10 */ new PointF(m_location.X+(ray-delta),m_rect.Bottom-(ray-delta)),
// /* 11 */ new PointF(m_location.X,m_rect.Bottom-ray),
// /* 12 */ new PointF(m_location.X,m_center.Y),
// /* 13 */ new PointF(m_location.X,m_location.Y+ray),
// /* 14 */ new PointF(m_location.X+(ray-delta),m_location.Y+(ray-delta)),
// /* 15 */ new PointF(m_location.X+ray,m_location.Y),
// /* 16 */ new PointF(m_center.X,m_location.Y)
// };
////***************** NON UTILIZZATE A CAUSA DELLE API *******************////
//GraphicsPath gp = new GraphicsPath();
//gp.AddCurve(pts, 0, 16, 0.05F);
////**********************************************************************////
m_gp = new GraphicsPath();
//m_gp.AddCurve(pts, 0, 16, 0.05F);
m_gp.AddLine(new PointF(m_center.X, m_location.Y), new PointF(m_rect.Right - ray, m_location.Y));
m_gp.AddArc(new RectangleF(m_rect.Right - m_rounded, m_location.Y, m_rounded, m_rounded), 270, 90);
m_gp.AddLine(new PointF(m_rect.Right, m_location.Y + ray), new PointF(m_rect.Right, m_rect.Bottom - ray));
m_gp.AddArc(new RectangleF(m_rect.Right - m_rounded, m_rect.Bottom - m_rounded, m_rounded, m_rounded), 0, 90);
m_gp.AddLine(new PointF(m_rect.Right - ray, m_rect.Bottom), new PointF(m_location.X + ray, m_rect.Bottom));
m_gp.AddArc(new RectangleF(m_location.X, m_rect.Bottom - m_rounded, m_rounded, m_rounded), 90, 90);
m_gp.AddLine(new PointF(m_location.X, m_rect.Bottom - ray), new PointF(m_location.X, m_location.Y + ray));
m_gp.AddArc(new RectangleF(m_location.X, m_location.Y, m_rounded, m_rounded), 180, 90);
m_gp.AddLine(new PointF(m_location.X + ray, m_location.Y), new PointF(m_center.X, m_location.Y));
m_gp.CloseFigure();
//// ******** PROVA ********** ////
IntPtr nativePath = IntPtr.Zero;
IntPtr ptrPoints = GDIplus.ConvertPointToMemory(m_gp.PathPoints);
int iRet = GDIplus.GdipCreatePath((int)FillMode.Alternate, ref nativePath);
HandleRef pathRef = new HandleRef(null, nativePath);
iRet = GDIplus.GdipAddPathLine(pathRef, m_center.X, m_location.Y, m_rect.Right - ray, m_location.Y);
iRet = GDIplus.GdipAddPathArc(pathRef, m_rect.Right - m_rounded, m_location.Y, m_rounded, m_rounded, 270, 90);
iRet = GDIplus.GdipAddPathLine(pathRef, m_rect.Right, m_location.Y + ray, m_rect.Right, m_rect.Bottom - ray);
iRet = GDIplus.GdipAddPathArc(pathRef, m_rect.Right - m_rounded, m_rect.Bottom - m_rounded, m_rounded, m_rounded, 0, 90);
iRet = GDIplus.GdipAddPathLine(pathRef, m_rect.Right - ray, m_rect.Bottom, m_location.X + ray, m_rect.Bottom);
iRet = GDIplus.GdipAddPathArc(pathRef, m_location.X, m_rect.Bottom - m_rounded, m_rounded, m_rounded, 90, 90);
iRet = GDIplus.GdipAddPathLine(pathRef, m_location.X, m_rect.Bottom - ray, m_location.X, m_location.Y + ray);
iRet = GDIplus.GdipAddPathArc(pathRef, m_location.X, m_location.Y, m_rounded, m_rounded, 180, 90);
iRet = GDIplus.GdipAddPathLine(pathRef, m_location.X + ray, m_location.Y, m_center.X, m_location.Y);
iRet = GDIplus.GdipClosePathFigure(pathRef);
//// ************************* ////
ColorBlend cblend = new ColorBlend();
float[] positions = new float[] { 0.0F, (float)gradient, 1F };
Color[] colors = new Color[] { m_color1, m_color2, m_color3 };
cblend.Positions = positions;
cblend.Colors = colors;
////***************** NON UTILIZZATE A CAUSA DELLE API *******************////
//PathGradientBrush pgb = new PathGradientBrush(m_gp.PathPoints);
//pgb.CenterPoint = m_center;
//pgb.CenterColor = m_centercolor;
//pgb.InterpolationColors = cblend;
//pgb.FocusScales = new PointF((float)gradX, (float)gradY);
////**********************************************************************////
// crea il PathGradientBrush
m_nativeBrush = IntPtr.Zero;
//IntPtr j = GDIplus.ConvertPointToMemory(m_gp.PathPoints);//pts
// /*int*/ iRet = GDIplus.GdipCreatePathGradient(new HandleRef(null, j), (int)pts.Length, (int)WrapMode.Clamp, out m_nativeBrush);
iRet = GDIplus.GdipCreatePathGradientFromPath(pathRef, out m_nativeBrush);
HandleRef brushRef = new HandleRef(null, m_nativeBrush);
// imposta il CenterPoint
iRet = GDIplus.GdipSetPathGradientCenterPoint(brushRef, new GPPOINTF(m_center));
// imposta InterpolationColors
this.SetInterpolationColorsInternal(cblend);
// imposta FocusScales
iRet = GDIplus.GdipSetPathGradientFocusScales(brushRef, (float)gradX, (float)gradY);
base.SetNativeBrush(m_nativeBrush);
}
