protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
// get a copy of the xamarin control we are changing
SelectImageButton formControl = (SelectImageButton)sender;
// get the selected state and hold colors and widths and set them to be used thoughout the renderer
droidBackgroundColor = formControl.BackgroundColor.ToAndroid();
droidBorderColor = formControl.BorderColor.ToAndroid();
droidBorderWidth = formControl.BorderWidth * 2;
droidHoldBackgroundColor = formControl.HoldBackgroundColor.ToAndroid();
droidHoldBorderColor = formControl.HoldBorderColor.ToAndroid();
droidHoldBorderWidth = formControl.HoldBorderWidth * 2;
base.OnElementPropertyChanged(formControl, e);
// test of setting the padding for this before drawing a background
this.SetClipChildren(true);
// create a drawable color and set irs raduis, color, and border
var rad = new global::Android.Graphics.Drawables.GradientDrawable();
rad.SetCornerRadius(1000.00F);
rad.SetColor(droidBackgroundColor);
rad.SetStroke(droidBorderWidth, droidBorderColor);
// apply the drawable to the background
this.Background = rad;
// set the draw border
drawBorderWidth = (float)formControl.BorderWidth * 2;
}
void UpdateBackgroundColor()
{
var colorToSet = Element.Color;
if (colorToSet == Color.Default)
{
colorToSet = Element.BackgroundColor;
}
Background = new global::Android.Graphics.Drawables.GradientDrawable();
BackgroundGradient?.SetColor(colorToSet.ToAndroid());
}
//adding an android touch recogniser that can detect more touch and hold events than the forms one
public override bool OnTouchEvent(MotionEvent e)
{
// this boolean will be used to decide on the colors at the end and set by the various touch event types
bool touchDown = false;
// color values to chnage on hold or relese
Android.Graphics.Color touchBackgroundColor = droidBackgroundColor;
Android.Graphics.Color touchBorderColor = droidBorderColor;
int touchBorderWidth;
if (e.Action == MotionEventActions.Down)
{
touchDown = true;
}
if (e.Action == MotionEventActions.Up)
{
touchDown = false;
}
if (e.Action == MotionEventActions.ButtonPress)
{
touchDown = false;
}
if (e.Action == MotionEventActions.ButtonRelease)
{
touchDown = false;
}
// set the color depebding on the pressed state of the button
if (touchDown)
{
touchBackgroundColor = droidHoldBackgroundColor;
touchBorderColor = droidHoldBorderColor;
touchBorderWidth = droidHoldBorderWidth;
}
else
{
touchBackgroundColor = droidBackgroundColor;
touchBorderColor = droidBorderColor;
touchBorderWidth = droidBorderWidth;
}
// create a drawable color and set its radius, color, and border
var rad = new global::Android.Graphics.Drawables.GradientDrawable();
rad.SetCornerRadius(1000.00F);
rad.SetColor(touchBackgroundColor);
rad.SetStroke(touchBorderWidth, touchBorderColor);
// apply the drawable to the background
this.Background = rad;
return(base.OnTouchEvent(e));
}
public RoundedBoxViewRenderer()
{
AutoPackage = false;
Background = new global::Android.Graphics.Drawables.GradientDrawable();
}
