/// <summary>
/// UIView with the colored border for target edges.
/// </summary>
/// <returns>UIView with border.</returns>
/// <param name="view">Target view.</param>
/// <param name="borderWidth">Border width.</param>
/// <param name="borderColor">Border color.</param>
/// <param name="edge">Border edge.</param>
public static UIView WithBorder(this UIView view, nfloat borderWidth, CGColor borderColor, UIRectEdge edge)
{
if (edge == UIRectEdge.None)
{
return(view);
}
if (edge.HasFlag(UIRectEdge.All))
{
return(WithBorder(view, borderWidth, borderColor));
}
if (edge.HasFlag(UIRectEdge.Top))
{
AddBorder(
view,
borderColor,
UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleBottomMargin,
new CGRect(0, 0, view.Frame.Size.Width, borderWidth));
}
if (edge.HasFlag(UIRectEdge.Bottom))
{
AddBorder(
view,
borderColor,
UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleTopMargin,
new CGRect(0, view.Frame.Size.Height - borderWidth, view.Frame.Size.Width, borderWidth));
}
if (edge.HasFlag(UIRectEdge.Left))
{
AddBorder(
view,
borderColor,
UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleRightMargin,
new CGRect(0, 0, borderWidth, view.Frame.Size.Height));
}
if (edge.HasFlag(UIRectEdge.Right))
{
AddBorder(
view,
borderColor,
UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleLeftMargin,
new CGRect(view.Frame.Size.Width - borderWidth, 0, borderWidth, view.Frame.Size.Height));
}
return(view);
}
/// <summary>
/// Adds borders (as UIViews) to a view.
/// </summary>
/// <param name="view">The view to add the borders to.</param>
/// <param name="edges">The edges to add borders to.</param>
/// <param name="borderColor">The color of the borders.</param>
/// <param name="thickness">The thickness of the borders.</param>
public static void AddBordersToView(this UIView view, UIRectEdge edges, UIColor borderColor, float thickness = 1)
{
if (edges.HasFlag(UIRectEdge.Top) || edges.HasFlag(UIRectEdge.All))
{
var top = GetBorderView(borderColor);
view.Add(top);
view.AddConstraints(new[] {
NSLayoutConstraint.Create(top, NSLayoutAttribute.Top, NSLayoutRelation.Equal, view, NSLayoutAttribute.Top, 1, -thickness),
NSLayoutConstraint.Create(top, NSLayoutAttribute.Left, NSLayoutRelation.Equal, view, NSLayoutAttribute.Left, 1, 0),
NSLayoutConstraint.Create(top, NSLayoutAttribute.Right, NSLayoutRelation.Equal, view, NSLayoutAttribute.Right, 1, 0),
NSLayoutConstraint.Create(top, NSLayoutAttribute.Height, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, thickness)
});
}
if (edges.HasFlag(UIRectEdge.Right) || edges.HasFlag(UIRectEdge.All))
{
var right = GetBorderView(borderColor);
view.Add(right);
view.AddConstraints(new[] {
NSLayoutConstraint.Create(right, NSLayoutAttribute.Top, NSLayoutRelation.Equal, view, NSLayoutAttribute.Top, 1, 0),
NSLayoutConstraint.Create(right, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, view, NSLayoutAttribute.Bottom, 1, 0),
NSLayoutConstraint.Create(right, NSLayoutAttribute.Right, NSLayoutRelation.Equal, view, NSLayoutAttribute.Right, 1, thickness),
NSLayoutConstraint.Create(right, NSLayoutAttribute.Width, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, thickness)
});
}
if (edges.HasFlag(UIRectEdge.Bottom) || edges.HasFlag(UIRectEdge.All))
{
var bottom = GetBorderView(borderColor);
view.Add(bottom);
view.AddConstraints(new[] {
NSLayoutConstraint.Create(bottom, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, view, NSLayoutAttribute.Bottom, 1, thickness),
NSLayoutConstraint.Create(bottom, NSLayoutAttribute.Left, NSLayoutRelation.Equal, view, NSLayoutAttribute.Left, 1, 0),
NSLayoutConstraint.Create(bottom, NSLayoutAttribute.Right, NSLayoutRelation.Equal, view, NSLayoutAttribute.Right, 1, 0),
NSLayoutConstraint.Create(bottom, NSLayoutAttribute.Height, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, thickness)
});
}
if (edges.HasFlag(UIRectEdge.Left) || edges.HasFlag(UIRectEdge.All))
{
var left = GetBorderView(borderColor);
view.Add(left);
view.AddConstraints(new[] {
NSLayoutConstraint.Create(left, NSLayoutAttribute.Top, NSLayoutRelation.Equal, view, NSLayoutAttribute.Top, 1, 0),
NSLayoutConstraint.Create(left, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, view, NSLayoutAttribute.Bottom, 1, 0),
NSLayoutConstraint.Create(left, NSLayoutAttribute.Left, NSLayoutRelation.Equal, view, NSLayoutAttribute.Left, 1, -thickness),
NSLayoutConstraint.Create(left, NSLayoutAttribute.Width, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, thickness)
});
}
}