void UpdateSquareShape()
{
if (!NativeVersion.IsAtLeast(14))
{
UpdateCornerRadius();
return;
}
var uiPageControlContentView = Subviews[0];
if (uiPageControlContentView.Subviews.Length > 0)
{
var uiPageControlIndicatorContentView = uiPageControlContentView.Subviews[0];
foreach (var view in uiPageControlIndicatorContentView.Subviews)
{
if (view is UIImageView imageview)
{
imageview.Image = UIImage.GetSystemImage("squareshape.fill");
var frame = imageview.Frame;
//the square shape is not the same size as the circle so we might need to correct the frame
imageview.Frame = new CGRect(frame.X - 6, frame.Y, frame.Width, frame.Height);
}
}
}
}
public MauiPageControl()
{
ValueChanged += MauiPageControlValueChanged;
if (NativeVersion.IsAtLeast(14))
{
AllowsContinuousInteraction = false;
BackgroundStyle = UIPageControlBackgroundStyle.Minimal;
}
}
public static void UpdateTextHtml(this TextView textView, ILabel label)
{
var newText = label.Text ?? string.Empty;
if (NativeVersion.IsAtLeast(24))
{
textView.SetText(Html.FromHtml(newText, FromHtmlOptions.ModeCompact), BufferType.Spannable);
}
else
#pragma warning disable CS0618 // Type or member is obsolete
{
textView.SetText(Html.FromHtml(newText), BufferType.Spannable);
}
#pragma warning restore CS0618 // Type or member is obsolete
}
void MauiPageControlValueChanged(object?sender, System.EventArgs e)
{
if (_updatingPosition || _indicatorView == null)
{
return;
}
_indicatorView.Position = (int)CurrentPage;
//if we are iOS13 or lower and we are using a Square shape
//we need to update the CornerRadius of the new shape.
if (IsSquare && !NativeVersion.IsAtLeast(14))
{
LayoutSubviews();
}
}
internal static UIView GetTrackSubview(this UISwitch uISwitch)
{
UIView uIView;
if (NativeVersion.IsAtLeast(13))
{
uIView = uISwitch.Subviews[0].Subviews[0];
}
else
{
uIView = uISwitch.Subviews[0].Subviews[0].Subviews[0];
}
return(uIView);
}
public MauiTimePicker(Action dateSelected)
{
BorderStyle = UITextBorderStyle.RoundedRect;
_picker = new UIDatePicker {
Mode = UIDatePickerMode.Time, TimeZone = new NSTimeZone("UTC")
};
_dateSelected = dateSelected;
if (NativeVersion.IsAtLeast(14))
{
_picker.PreferredDatePickerStyle = UIDatePickerStyle.Wheels;
}
var width = UIScreen.MainScreen.Bounds.Width;
var toolbar = new UIToolbar(new RectangleF(0, 0, width, 44))
{
BarStyle = UIBarStyle.Default, Translucent = true
};
var spacer = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (o, a) =>
{
_dateSelected?.Invoke();
});
toolbar.SetItems(new[] { spacer, doneButton }, false);
InputView = _picker;
InputAccessoryView = toolbar;
InputView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight;
InputAccessoryView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight;
InputAssistantItem.LeadingBarButtonGroups = null;
InputAssistantItem.TrailingBarButtonGroups = null;
AccessibilityTraits = UIAccessibilityTrait.Button;
}
public static UIImage?ConvertToImage(this UIView view)
{
if (!NativeVersion.IsAtLeast(10))
{
UIGraphics.BeginImageContext(view.Frame.Size);
view.Layer.RenderInContext(UIGraphics.GetCurrentContext());
var image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
if (image.CGImage == null)
{
return(null);
}
return(new UIImage(image.CGImage));
}
var imageRenderer = new UIGraphicsImageRenderer(view.Bounds.Size);
return(imageRenderer.CreateImage((a) =>
{
view.Layer.RenderInContext(a.CGContext);
}));
}
public static void UpdateTrackColor(this UISwitch uiSwitch, ISwitch view, UIColor?defaultOnTrackColor, UIColor?defaultOffTrackColor)
{
if (view == null)
{
return;
}
if (view.TrackColor == null)
{
uiSwitch.OnTintColor = defaultOnTrackColor;
}
else
{
uiSwitch.OnTintColor = view.TrackColor.ToNative();
}
UIView uIView;
if (NativeVersion.IsAtLeast(13))
{
uIView = uiSwitch.Subviews[0].Subviews[0];
}
else
{
uIView = uiSwitch.Subviews[0].Subviews[0].Subviews[0];
}
if (view.TrackColor == null)
{
uIView.BackgroundColor = defaultOffTrackColor;
}
else
{
uIView.BackgroundColor = uiSwitch.OnTintColor;
}
}
public static void UpdateSemanticNodeInfo(this View nativeView, IView virtualView, AccessibilityNodeInfoCompat?info)
{
if (info == null)
{
return;
}
var semantics = virtualView?.Semantics;
if (semantics == null)
{
return;
}
string?newText = null;
string?newContentDescription = null;
var desc = semantics.Description;
if (!string.IsNullOrEmpty(desc))
{
// Edit Text fields won't read anything for the content description
if (nativeView is EditText et)
{
if (!string.IsNullOrEmpty(et.Text))
{
newText = $"{desc}, {et.Text}";
}
else
{
newText = $"{desc}";
}
}
else
{
newContentDescription = desc;
}
}
var hint = semantics.Hint;
if (!string.IsNullOrEmpty(hint))
{
// info HintText won't read anything back when using TalkBack pre API 26
if (NativeVersion.IsAtLeast(26))
{
info.HintText = hint;
if (nativeView is EditText)
{
info.ShowingHintText = false;
}
}
else
{
if (nativeView is EditText et)
{
newText = newText ?? et.Text;
newText = $"{newText}, {hint}";
}
else if (nativeView is TextView tv)
{
if (newContentDescription != null)
{
newText = $"{newContentDescription}, {hint}";
}
else if (!string.IsNullOrEmpty(tv.Text))
{
newText = $"{tv.Text}, {hint}";
}
else
{
newText = $"{hint}";
}
}
else
{
if (newContentDescription != null)
{
newText = $"{newContentDescription}, {hint}";
}
else
{
newText = $"{hint}";
}
}
newContentDescription = null;
}
}
if (!string.IsNullOrWhiteSpace(newContentDescription))
{
info.ContentDescription = newContentDescription;
}
if (!string.IsNullOrWhiteSpace(newText))
{
info.Text = newText;
}
}