private Drawable CreateNativeBorder(Brush background, Brush borderBrush, Thickness borderThickness,
CornerRadius cornerRadius)
{
var cornerRadiusArray = new[]
{
(float)cornerRadius.TopLeft, (float)cornerRadius.TopLeft,
(float)cornerRadius.TopRight, (float)cornerRadius.TopRight,
(float)cornerRadius.BottomRight, (float)cornerRadius.BottomRight,
(float)cornerRadius.BottomLeft, (float)cornerRadius.BottomLeft
};
Paint backgroundPaint = new Paint();
Paint borderPaint = new Paint();
backgroundPaint.SetStyle(Paint.Style.Fill);
borderPaint.SetStyle(Paint.Style.Fill);
if (borderBrush == null)
{
borderPaint.Color = Color.Transparent;
}
else
{
if (borderBrush is SolidColorBrush)
{
var color = ((SolidColorBrush)borderBrush).Color;
borderPaint.Color = new Color(color.R, color.G, color.B, color.A);
}
else
{
throw new Exception("SolidColorBrush BorderBrush is supported.");
}
}
if (background == null)
{
backgroundPaint.Color = Color.Transparent;
}
else
{
if (background is SolidColorBrush)
{
var color = ((SolidColorBrush)background).Color;
backgroundPaint.Color = new Color(color.R, color.G, color.B, color.A);
}
else
{
throw new Exception("SolidColorBrush Background is supported.");
}
}
var rs = new RoundRectShape(cornerRadiusArray, null, null);
var noChild =
(this.Child == null || this.Child.Height.Equals(0) || this.Child.Width.Equals(0)) &&
(this.ActualHeight.Equals(0) || this.ActualWidth.Equals(0));
var left = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Left));
var top = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Top));
var right = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Right));
var bottom = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Bottom));
var pixelBorderThickness = new Thickness(left, top, right, bottom);
Bitmap bitmap = null;
using (ShapeDrawable sd = new CustomShapeDrawable(rs, backgroundPaint, borderPaint, cornerRadiusArray, pixelBorderThickness, noChild))
{
var width = ScreenProperties.ConvertDPIToPixels((float)(this.ActualWidth));
var height = ScreenProperties.ConvertDPIToPixels((float)(this.ActualHeight));
if (height <= 0 || width <= 0)
{
return(new BitmapDrawable());
}
bitmap = Bitmap.CreateBitmap((int)width, (int)height, Bitmap.Config.Argb8888);
var canvas = new Android.Graphics.Canvas(bitmap);
sd.SetBounds(0, 0, canvas.Width, canvas.Height);
sd.Draw(canvas);
}
return(new BitmapDrawable(bitmap));
}
private Drawable CreateNativeBorder(Brush background, Brush borderBrush, Thickness borderThickness,
CornerRadius cornerRadius)
{
var cornerRadiusArray = new[]
{
(float) cornerRadius.TopLeft, (float) cornerRadius.TopLeft,
(float) cornerRadius.TopRight, (float) cornerRadius.TopRight,
(float) cornerRadius.BottomRight, (float) cornerRadius.BottomRight,
(float) cornerRadius.BottomLeft, (float) cornerRadius.BottomLeft
};
Paint backgroundPaint = new Paint();
Paint borderPaint = new Paint();
backgroundPaint.SetStyle(Paint.Style.Fill);
borderPaint.SetStyle(Paint.Style.Fill);
if (borderBrush == null)
{
borderPaint.Color = Color.Transparent;
}
else
{
if (borderBrush is SolidColorBrush)
{
var color = ((SolidColorBrush)borderBrush).Color;
borderPaint.Color = new Color(color.R, color.G, color.B, color.A);
}
else
{
throw new Exception("SolidColorBrush BorderBrush is supported.");
}
}
if (background == null)
{
backgroundPaint.Color = Color.Transparent;
}
else
{
if (background is SolidColorBrush)
{
var color = ((SolidColorBrush)background).Color;
backgroundPaint.Color = new Color(color.R, color.G, color.B, color.A);
}
else
{
throw new Exception("SolidColorBrush Background is supported.");
}
}
var rs = new RoundRectShape(cornerRadiusArray, null, null);
var noChild =
(this.Child == null || this.Child.Height.Equals(0) || this.Child.Width.Equals(0))
&& (this.ActualHeight.Equals(0) || this.ActualWidth.Equals(0));
var left = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Left));
var top = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Top));
var right = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Right));
var bottom = ScreenProperties.ConvertDPIToPixels((float)(borderThickness.Bottom));
var pixelBorderThickness = new Thickness(left, top, right, bottom);
Bitmap bitmap = null;
using (ShapeDrawable sd = new CustomShapeDrawable(rs, backgroundPaint, borderPaint, cornerRadiusArray, pixelBorderThickness, noChild))
{
var width = ScreenProperties.ConvertDPIToPixels((float)(this.ActualWidth));
var height = ScreenProperties.ConvertDPIToPixels((float)(this.ActualHeight));
if (height <= 0 || width <= 0)
return new BitmapDrawable();
bitmap = Bitmap.CreateBitmap((int)width, (int)height, Bitmap.Config.Argb8888);
var canvas = new Android.Graphics.Canvas(bitmap);
sd.SetBounds(0, 0, canvas.Width, canvas.Height);
sd.Draw(canvas);
}
return new BitmapDrawable(bitmap);
}
