public GradientButton()
{
HeightRequest = 44;
WidthRequest = 100;
_label = new Label
{
Text = Text,
TextColor = TextColor,
FontSize = 17,
BackgroundColor = Color.Transparent,
HorizontalTextAlignment = TextAlignment.Center,
VerticalTextAlignment = TextAlignment.Center
};
_background = new NControlView
{
DrawingFunction = (canvas, rect) =>
{
var brush = new LinearGradientBrush(
Point.Zero,
Point.OneX,
StartColor.ToNColor(),
EndColor.ToNColor());
var curveSize = BorderRadius;
var width = rect.Width;
var height = rect.Height;
canvas.DrawPath(new PathOp[] {
new MoveTo(curveSize, 0),
// Top Right corner
new LineTo(width - curveSize, 0),
new CurveTo(
new Point(width - curveSize, 0),
new Point(width, 0),
new Point(width, curveSize)
),
new LineTo(width, height - curveSize),
// Bottom right corner
new CurveTo(
new Point(width, height - curveSize),
new Point(width, height),
new Point(width - curveSize, height)
),
new LineTo(curveSize, height),
// Bottom left corner
new CurveTo(
new Point(curveSize, height),
new Point(0, height),
new Point(0, height - curveSize)
),
new LineTo(0, curveSize),
new CurveTo(
new Point(0, curveSize),
new Point(0, 0),
new Point(curveSize, 0)
),
new ClosePath()
}, null, brush);
}
};
Content = new Grid
{
Children =
{
_background,
_label
}
};
}