/// <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)
{
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);
}
}
/// <summary>
/// Draws the bounding box and its edit handles into the given canvas
/// </summary>
/// <param name="canvas">Canvas.</param>
public virtual void Draw(SKCanvas canvas)
{
// Anything to process?
if (State != KimonoShapeState.Selected &&
State != KimonoShapeState.Constructing &&
State != KimonoShapeState.Grouping)
{
return;
}
// Define the paint style
var paint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
StrokeWidth = 1
};
// Set stroke based on the state
switch (State)
{
case KimonoShapeState.Grouping:
paint.Color = KimonoColor.Ice;
break;
case KimonoShapeState.Selected:
paint.Color = KimonoColor.Tungsten;
break;
case KimonoShapeState.Constructing:
paint.Color = KimonoColor.Aqua;
break;
}
// Draw bounding frame
canvas.DrawRect(Rect, paint);
// Draw the four corner handles
TopLeftHandle?.Draw(canvas);
TopRightHandle?.Draw(canvas);
BottomRightHandle?.Draw(canvas);
BottomLeftHandle?.Draw(canvas);
// Draw optional handles
TopHandle?.Draw(canvas);
RightHandle?.Draw(canvas);
BottomHandle?.Draw(canvas);
LeftHandle?.Draw(canvas);
}
/// <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)
{
using (GraphicsPath gp = new())
{
Rectangle innerRect = new(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(ClientRectangle, BackColor.Lighter(.2F), BackColor.Darker(.6F), LinearGradientMode.Vertical);
g.FillPath(silver, gp);
silver.Dispose();
using (LinearGradientBrush lgb = new(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()
{
Colors = colors,
Positions = positions
};
lgb.InterpolationColors = cb;
g.FillPath(lgb, gp);
}
g.DrawPath(Pens.Gray, gp);
}
if (Enabled)
{
LeftHandle.Draw(g);
RightHandle.Draw(g);
}
}
