public static Brush ModifyFillBrushIfSelected(IFigure figure, Brush brush, FigureStyle style)
{
// Below is my suggestion for the fill appearance when a shape is selected. - David
var brushAsSolidColor = brush as SolidColorBrush;
if (figure != null && figure.Selected && !(style is PointStyle) && brushAsSolidColor != null)
{
// brush.Opacity = 0.2; // The previous method of showing a figure is selected.
// The color of the stripes in the gradient is made by shifting the Fill color toward a gray value.
var b = new LinearGradientBrush();
var shapeWidth = 200; // Arbitrary value. Using the with of the figure would be better.
b.StartPoint = new Point(0.0, 0.0);
b.EndPoint = new Point(1.0, 0.0);
double gap = 6; // Actually half the gap between stripes in physical coordinates.
double s = gap / shapeWidth;
byte gray = 200; // The gray value to shift the Fill color toward.
double similarity = .65; // How similar are the Fill color and the gray value (1 = similar, 0 = not).
byte alpha = ((int)brushAsSolidColor.Color.A < 128) ? (byte)128 : brushAsSolidColor.Color.A; // We need some opacity.
for (double i = 0; i + s + s < 1; i += 2 * s)
{
b.GradientStops.Add(new GradientStop() { Color = brushAsSolidColor.Color, Offset = i + .7 * s });
b.GradientStops.Add(new GradientStop()
{
Color = Color.FromArgb(alpha, (byte)(gray + (brushAsSolidColor.Color.R - gray) * similarity),
(byte)(gray + (brushAsSolidColor.Color.G - gray) * similarity),
(byte)(gray + (brushAsSolidColor.Color.B - gray) * similarity)),
Offset = i + s
});
b.GradientStops.Add(new GradientStop() { Color = brushAsSolidColor.Color, Offset = i + s + .3 * s });
}
brush = b;
}
// End of suggestion.
return brush;
}
public static Brush ModifyFillBrushIfSelected(IFigure figure, Brush brush, FigureStyle style)
{
// Below is my suggestion for the fill appearance when a shape is selected. - David
var brushAsSolidColor = brush as SolidColorBrush;
if (figure != null && figure.Selected && !(style is PointStyle) && brushAsSolidColor != null)
{
// brush.Opacity = 0.2; // The previous method of showing a figure is selected.
// The color of the stripes in the gradient is made by shifting the Fill color toward a gray value.
var b = new LinearGradientBrush();
var shapeWidth = 200; // Arbitrary value. Using the with of the figure would be better.
b.StartPoint = new Point(0.0, 0.0);
b.EndPoint = new Point(1.0, 0.0);
double gap = 6; // Actually half the gap between stripes in physical coordinates.
double s = gap / shapeWidth;
byte gray = 200; // The gray value to shift the Fill color toward.
double similarity = .65; // How similar are the Fill color and the gray value (1 = similar, 0 = not).
byte alpha = ((int)brushAsSolidColor.Color.A < 128) ? (byte)128 : brushAsSolidColor.Color.A; // We need some opacity.
for (double i = 0; i + s + s < 1; i += 2 * s)
{
b.GradientStops.Add(new GradientStop()
{
Color = brushAsSolidColor.Color, Offset = i + .7 * s
});
b.GradientStops.Add(new GradientStop()
{
Color = Color.FromArgb(alpha, (byte)(gray + (brushAsSolidColor.Color.R - gray) * similarity),
(byte)(gray + (brushAsSolidColor.Color.G - gray) * similarity),
(byte)(gray + (brushAsSolidColor.Color.B - gray) * similarity)),
Offset = i + s
});
b.GradientStops.Add(new GradientStop()
{
Color = brushAsSolidColor.Color, Offset = i + s + .3 * s
});
}
brush = b;
}
// End of suggestion.
return(brush);
}
