protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (Element != null)
{
var materialView = UIStoryboard.FromName("Main", null).InstantiateViewController("ViewController").View;
NativeView.AddSubview(materialView);
}
}
public override UIView CreateView()
{
_view = new NativeView();
_view.TouchesBeganEvent += HandleTouchesBeganEvent;
_view.TouchesEndedEvent += HandleTouchesEndedEvent;
_view.TouchesCancelledEvent += HandleTouchesCancelledEvent;
foreach (var control in _controls)
{
_view.AddSubview(control.CreateView());
}
return(_view);
}
void UpdateContent()
{
_ = NativeView ?? throw new InvalidOperationException($"{nameof(NativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
// Cleanup the old view when reused
NativeView.ClearSubviews();
if (VirtualView.PresentedContent is IView view)
{
NativeView.AddSubview(view.ToNative(MauiContext));
}
}
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (ViewController != null)
{
NSArray items = NSArray.FromStrings(new string[] { "Courses", "Favourite", "Recent" });
UISegmentedControl segmentedControl = new UISegmentedControl(items)
{
Frame = new CGRect(50, 20, NativeView.Bounds.Width - 100, 35)
};
segmentedControl.SelectedSegment = 0;
segmentedControl.TintColor = UIColor.Red;
segmentedControl.ApportionsSegmentWidthsByContent = true; //Change the width of the segment based on the content of the segment
segmentedControl.AddTarget(this, new Selector("ValueChanged:"), UIControlEvent.ValueChanged);
NativeView.AddSubview(segmentedControl);
}
}
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (Spinner == null)
{
Spinner = new UIActivityIndicatorView
{
ActivityIndicatorViewStyle = UIActivityIndicatorViewStyle.WhiteLarge,
BackgroundColor = UIColor.Gray,
};
Spinner.Layer.CornerRadius = 10;
NativeView.AddSubview(Spinner);
Spinner.TranslatesAutoresizingMaskIntoConstraints = false;
NativeView.AddConstraint(NSLayoutConstraint.Create(
Spinner, NSLayoutAttribute.CenterX, NSLayoutRelation.Equal,
NativeView, NSLayoutAttribute.CenterX, (nfloat)1.0, (nfloat)0.0));
NativeView.AddConstraint(NSLayoutConstraint.Create(
Spinner, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal,
NativeView, NSLayoutAttribute.CenterY, (nfloat)1.0, (nfloat)0.0));
NativeView.AddConstraint(NSLayoutConstraint.Create(
Spinner, NSLayoutAttribute.Width, NSLayoutRelation.Equal,
(nfloat)1.0, (nfloat)100));
NativeView.AddConstraint(NSLayoutConstraint.Create(
Spinner, NSLayoutAttribute.Height, NSLayoutRelation.Equal,
(nfloat)1.0, (nfloat)100));
}
if (e.NewElement is PopContentPage page)
{
page.PropertyChanged += IsBusyChanged;
SetIsBusy();
}
if (e.OldElement is PopContentPage page2)
{
page2.PropertyChanged -= IsBusyChanged;
}
}
void UpdateIndicator()
{
if (VirtualView is ITemplatedIndicatorView iTemplatedIndicatorView)
{
var indicatorsLayoutOverride = iTemplatedIndicatorView.IndicatorsLayoutOverride;
UIView?handler;
if (MauiContext != null && indicatorsLayoutOverride != null)
{
ClearIndicators();
handler = indicatorsLayoutOverride.ToNative(MauiContext);
NativeView.AddSubview(handler);
}
}
void ClearIndicators()
{
foreach (var child in NativeView.Subviews)
{
child.RemoveFromSuperview();
}
}
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
if (Element == null)
{
return;
}
var cx = rect.Width / 2f;
var cy = rect.Height / 2f;
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = UIGraphics.GetCurrentContext();
var gradientColors = new CGColor[] { UIColor.LightGray.CGColor, Element.BackgroundColor.ToCGColor() };
var gradientLocations = new nfloat[] { 0f, 1f };
var gradient = new CGGradient(colorSpace, gradientColors, gradientLocations);
var shadow = new NSShadow()
{
ShadowColor = UIColor.Gray,
ShadowOffset = new CGSize(3, 3),
ShadowBlurRadius = 3
};
// Draw the hexagon (POINTY-TOP ONLY)
var radius = Element.Radius;
if (Element.BorderColor.A > 0 &&
Element.BorderSize > 0)
{
radius -= Element.BorderSize / 2f;
}
var points = new List <CGPoint>();
for (int i = 0; i < 6; ++i)
{
points.Add(new CGPoint(cx + radius * Math.Cos((i * 60 - 30) * Math.PI / 180f),
cy + radius * Math.Sin((i * 60 - 30) * Math.PI / 180f)));
}
var midPoint = new CGPoint(0.5 * (points[0].X + points[1].X), 0.5 * (points[0].Y + points[1].Y));
var path = new CGPath();
path.MoveToPoint(midPoint);
for (var i = 0; i < points.Count; ++i)
{
path.AddLineToPoint(new CGPoint(points[(i + 1) % points.Count].X, points[(i + 1) % points.Count].Y));
}
path.CloseSubpath();
context.AddPath(path);
//CoreAnimation.CAShapeLayer mask = new CoreAnimation.CAShapeLayer();
//context.SetShadow(shadow.ShadowOffset, shadow.ShadowBlurRadius, UIColor.Gray.CGColor);
context.SetFillColor(Element.BackgroundColor.ToCGColor());
if (Element.BorderColor.A > 0 &&
Element.BorderSize > 0)
{
context.SetLineWidth((nfloat)Element.BorderSize);
context.SetStrokeColor(Element.BorderColor.ToCGColor());
context.DrawPath(CGPathDrawingMode.FillStroke);
}
else
{
context.DrawPath(CGPathDrawingMode.Fill);
}
//context.SaveState();
//context.BeginTransparencyLayer();
//path.AddClip();
//context.DrawLinearGradient(gradient, points[0], points[1], CGGradientDrawingOptions.DrawsAfterEndLocation);
//context.EndTransparencyLayer();
//context.RestoreState();
// Draw Text
if (!String.IsNullOrEmpty(Element.FAText))
{
double eigthHeight = rect.Height / 8;
double quarterHeight = rect.Height / 4;
double threeEights = eigthHeight * 3;
if (!String.IsNullOrEmpty(Element.Text))
{
// FAText Icon with Text
//CGRect faRect = new CGRect(rect.X, rect.Y + eigthHeight, rect.Width, threeEights); // no overlap
CGRect faRect = new CGRect(rect.X, rect.Y + eigthHeight, rect.Width, rect.Height / 2); // bottom of rect slightly overlaps with text-label
UILabel faLabel = new UILabel(faRect)
{
Text = Element.FAText,
TextAlignment = UITextAlignment.Center,
TextColor = Element.TextColor.ToUIColor(),
Font = UIFont.FromName(Element.FAFontFamily,
(nfloat)Element.FAFontSize)
};
CGRect labelRect = new CGRect(rect.X, rect.Height / 2, rect.Width, quarterHeight);
UILabel label = new UILabel(labelRect)
{
Text = Element.Text,
TextAlignment = UITextAlignment.Center,
TextColor = Element.TextColor.ToUIColor(),
Font = UIFont.FromName(Element.FontFamily,
(nfloat)Element.FontSize)
};
NativeView.AddSubviews(new UIView[] { faLabel, label });
}
else
{
if (Element.IsMenu)
{
// FAText Icon only (used for IsMenu property of HexagonLayout)
CGRect faRect = new CGRect(rect.X, rect.Y + eigthHeight, rect.Width, rect.Height / 2);
UILabel faLabel = new UILabel(faRect)
{
Text = Element.FAText,
TextAlignment = UITextAlignment.Center,
TextColor = Element.TextColor.ToUIColor(),
Font = UIFont.FromName(Element.FAFontFamily,
(nfloat)Element.FAFontSize)
};
NativeView.AddSubview(faLabel);
}
else
{
// FAText Icon only (centered)
CGRect faRect = new CGRect(rect.X, rect.Y, rect.Width, rect.Height);
UILabel faLabel = new UILabel(faRect)
{
Text = Element.FAText,
TextAlignment = UITextAlignment.Center,
TextColor = Element.TextColor.ToUIColor(),
Font = UIFont.FromName(Element.FAFontFamily,
(nfloat)Element.FAFontSize)
};
NativeView.AddSubview(faLabel);
}
}
}
else
{
UILabel label = new UILabel(rect)
{
Text = Element.Text,
TextAlignment = UITextAlignment.Center,
TextColor = Element.TextColor.ToUIColor(),
Font = UIFont.FromName(Element.FontFamily,
(nfloat)Element.FontSize)
};
NativeView.AddSubview(label);
}
}
