public App()
{
// The root page of your application
var mainLayout = new RelativeLayout();
var contentLayout = new RelativeLayout();
// center content layout inside main (full width, height according to 16:9 aspect ratio)
mainLayout.Children.Add(contentLayout,
Constraint.Constant(0),
Constraint.RelativeToParent((parent) =>
{
return ((parent.Height / 2) - ((parent.Width * 0.5625) / 2));
}),
Constraint.RelativeToParent((parent) =>
{
return parent.Width;
}),
Constraint.RelativeToParent((parent) =>
{
return (parent.Width * 0.5625);
})
);
// add fullscreen background image to content layout
var bgImageView = new Image();
bgImageView.Source = ImageSource.FromUri(new Uri("https://client.exploodo.media/exploodo/fe407ce2-cdcc-4e1c-92f2-a3ce00d0ce5d/i/48D2CFC05787FB23raster_60px-01.png"));
bgImageView.Aspect = Aspect.Fill;
contentLayout.Children.Add(bgImageView,
xConstraint: Constraint.Constant(0),
yConstraint: Constraint.Constant(0),
widthConstraint: Constraint.RelativeToParent(parent => parent.Width),
heightConstraint: Constraint.RelativeToParent(parent => parent.Height)
);
// add rotated image to content layout (use custom view renderer here)
// rotation is 45 degrees around Y with a camera distance of 200 pixels
var rotatedImageView = new ImageView(0, 45, 0, 200);
rotatedImageView.Source = ImageSource.FromUri(new Uri("https://client.exploodo.media/exploodo/fe407ce2-cdcc-4e1c-92f2-a3ce00d0ce5d/i/48D1C66D9599E8F2office_STILL_03.jpg"));
rotatedImageView.Aspect = Aspect.Fill;
// center it (size simply is 1/3 of parent)
contentLayout.Children.Add(rotatedImageView,
xConstraint: Constraint.RelativeToParent(parent => parent.Width / 2 - parent.Width / 6),
yConstraint: Constraint.RelativeToParent(parent => parent.Height / 2 - parent.Height / 6),
widthConstraint: Constraint.RelativeToParent(parent => parent.Width / 3),
heightConstraint: Constraint.RelativeToParent(parent => parent.Height / 3)
);
MainPage = new ContentPage {
Content = mainLayout
};
}
protected override void OnElementChanged(ElementChangedEventArgs<Image> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
_view = (ImageView)e.NewElement;
// view has to be automatically adjusted to screen size
_view.SizeChanged += imageView_SizeChanged;
}
}