/// <summary>
/// Controls the actual drawing for this gradient slider control.
/// </summary>
/// <param name="g"></param>
/// <param name="clipRectangle"></param>
protected virtual void OnDraw(Graphics g, Rectangle clipRectangle)
{
GraphicsPath gp = new GraphicsPath();
Rectangle innerRect = new Rectangle(_leftHandle.Width, 3, Width - 1 - _rightHandle.Width - _leftHandle.Width,
Height - 1 - 6);
gp.AddRoundedRectangle(innerRect, 2);
if (Width == 0 || Height == 0)
{
return;
}
// Create a rounded gradient effect as the backdrop that other colors will be drawn to
LinearGradientBrush silver = new LinearGradientBrush(ClientRectangle, BackColor.Lighter(.2F), BackColor.Darker(.6F), LinearGradientMode.Vertical);
g.FillPath(silver, gp);
silver.Dispose();
LinearGradientBrush lgb = new LinearGradientBrush(innerRect, MinimumColor, MaximumColor, LinearGradientMode.Horizontal);
g.FillPath(lgb, gp);
lgb.Dispose();
g.DrawPath(Pens.Gray, gp);
gp.Dispose();
if (Enabled)
{
_leftHandle.Draw(g);
_rightHandle.Draw(g);
}
}
private void DrawColorSemicircle(Graphics g)
{
Rectangle bounds = GetSemicircleBounds();
if (bounds.Width <= 0 || bounds.Height <= 0)
{
return;
}
GraphicsPath gp = new GraphicsPath();
gp.AddPie(new Rectangle(-bounds.Width, bounds.Y, bounds.Width * 2, bounds.Height), -90, 180);
Rectangle roundBounds = new Rectangle(bounds.X, bounds.Y, bounds.Width, bounds.Height);
LinearGradientBrush lgb = new LinearGradientBrush(roundBounds, BackColor.Lighter(.5F), BackColor.Darker(.5F), LinearGradientMode.ForwardDiagonal);
g.FillPath(lgb, gp);
lgb.Dispose();
gp.Dispose();
gp = new GraphicsPath();
Rectangle innerRound = GetInnerSemicircleBounds();
if (innerRound.Width <= 0 || innerRound.Height <= 0)
{
return;
}
gp.AddPie(new Rectangle(innerRound.X - innerRound.Width, innerRound.Y, innerRound.Width * 2, innerRound.Height), -90, 180);
PointF center = new PointF(innerRound.X + (innerRound.Width / 2), innerRound.Y + (innerRound.Height / 2));
float x = center.X - innerRound.Width;
float y = center.Y - innerRound.Height;
float w = innerRound.Width * 2;
float h = innerRound.Height * 2;
RectangleF circum = new RectangleF(x, y, w, h);
GraphicsPath coloring = new GraphicsPath();
coloring.AddEllipse(circum);
PathGradientBrush pgb = new PathGradientBrush(coloring)
{
CenterColor = _color.Lighter(.2F),
SurroundColors = new[] { _color.Darker(.2F) },
CenterPoint = new PointF(innerRound.X + 3, innerRound.Y + (innerRound.Height / 3))
};
g.FillPath(pgb, gp);
lgb.Dispose();
gp.Dispose();
}
/// <summary>
/// Instructs this button to draw itself.
/// </summary>
/// <param name="g">The graphics surface to draw to.</param>
public void Draw(Graphics g)
{
if (Bounds.Width == 0 || Bounds.Height == 0)
{
return;
}
Pen border = null;
Brush fill = null;
if (!Selected && !Highlighted)
{
border = new Pen(Color.Gray);
fill = new LinearGradientBrush(Bounds, BackColor.Lighter(.2f), BackColor.Darker(.2f), 45);
}
if (!Selected && Highlighted)
{
border = new Pen(Color.FromArgb(216, 240, 250));
fill = new LinearGradientBrush(Bounds, Color.FromArgb(245, 250, 253), Color.FromArgb(232, 245, 253), LinearGradientMode.Vertical);
}
if (Selected && !Highlighted)
{
border = new Pen(Color.FromArgb(153, 222, 253));
fill = new LinearGradientBrush(Bounds, Color.FromArgb(241, 248, 253), Color.FromArgb(213, 239, 252), LinearGradientMode.Vertical);
}
if (Selected && Highlighted)
{
border = new Pen(Color.FromArgb(182, 230, 251));
fill = new LinearGradientBrush(Bounds, Color.FromArgb(232, 246, 253), Color.FromArgb(196, 232, 250), LinearGradientMode.Vertical);
}
using (GraphicsPath gp = new GraphicsPath())
{
gp.AddRoundedRectangle(Bounds, 2);
if (fill != null)
{
g.FillPath(fill, gp);
}
if (border != null)
{
g.DrawPath(border, gp);
}
}
fill?.Dispose();
}
/// <summary>
/// Controls the actual drawing for this gradient slider control.
/// </summary>
/// <param name="g"></param>
/// <param name="clipRectangle"></param>
protected virtual void OnDraw(Graphics g, Rectangle clipRectangle)
{
GraphicsPath gp = new GraphicsPath();
Rectangle innerRect = new Rectangle(_leftHandle.Width, 3, Width - 1 - _rightHandle.Width - _leftHandle.Width,
Height - 1 - 6);
gp.AddRoundedRectangle(innerRect, 2);
if (Width == 0 || Height == 0)
{
return;
}
// Create a rounded gradient effect as the backdrop that other colors will be drawn to
LinearGradientBrush silver = new LinearGradientBrush(ClientRectangle, BackColor.Lighter(.2F), BackColor.Darker(.6F), LinearGradientMode.Vertical);
g.FillPath(silver, gp);
silver.Dispose();
LinearGradientBrush lgb = new LinearGradientBrush(innerRect, Color.White, Color.White, LinearGradientMode.Horizontal);
Color[] colors = new Color[37];
float[] positions = new float[37];
for (int i = 0; i <= 36; i++)
{
int j = _inverted ? 36 - i : i;
colors[j] = SymbologyGlobal.ColorFromHsl((i * 10 + _hueShift) % 360, 1, .7).ToTransparent(.7f);
positions[i] = i / 36f;
}
ColorBlend cb = new ColorBlend();
cb.Colors = colors;
cb.Positions = positions;
lgb.InterpolationColors = cb;
g.FillPath(lgb, gp);
lgb.Dispose();
g.DrawPath(Pens.Gray, gp);
gp.Dispose();
if (Enabled)
{
_leftHandle.Draw(g);
_rightHandle.Draw(g);
}
}
/// <summary>
/// Controls the actual drawing for this gradient slider control.
/// </summary>
/// <param name="g">The graphics object used for drawing.</param>
/// <param name="clipRectangle">The clip rectangle.</param>
protected virtual void OnDraw(Graphics g, Rectangle clipRectangle)
{
if (Width == 0 || Height == 0)
{
return;
}
LinearGradientBrush lgb = new LinearGradientBrush(ClientRectangle, BackColor.Lighter(.2F), BackColor.Darker(.2F), LinearGradientMode.Vertical);
g.FillRectangle(lgb, ClientRectangle);
lgb.Dispose();
int l = Convert.ToInt32((Width * (LeftHandle.Position - _min)) / (_max - _min));
int r = Convert.ToInt32((Width * (RightHandle.Position - _min)) / (_max - _min));
Rectangle a = new Rectangle(0, 5, l, Height - 10);
Rectangle b = new Rectangle(l, 5, r - l, Height - 10);
Rectangle c = new Rectangle(r, 5, Right - r, Height - 10);
if (a.Width > 0)
{
SolidBrush sb = new SolidBrush(_minColor);
g.FillRectangle(sb, a);
sb.Dispose();
}
if (b.Width > 0)
{
LinearGradientBrush center = new LinearGradientBrush(new Point(b.X, 0), new Point(b.Right, 0), _minColor, _maxColor);
g.FillRectangle(center, b);
center.Dispose();
}
if (c.Width > 0)
{
SolidBrush sb = new SolidBrush(_maxColor);
g.FillRectangle(sb, c);
sb.Dispose();
}
if (Enabled)
{
LeftHandle.Draw(g);
RightHandle.Draw(g);
}
}
