public void TestVisibility()
{
View child1, child2;
var stack = new StackLayout
{
IsPlatformEnabled = true,
Children =
{
(child1 = new View {
IsPlatformEnabled = true
}),
(child2 = new View {
IsPlatformEnabled = true
})
}
};
stack.Layout(new Rectangle(0, 0, 100, 100));
var size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Rectangle(0, 0, 100, 20), child1.Bounds);
Assert.AreEqual(new Rectangle(0, 26, 100, 20), child2.Bounds);
Assert.AreEqual(new Size(100, 46), size);
child1.IsVisible = false;
Assert.False(child1.IsVisible);
Assert.AreEqual(new Rectangle(0, 0, 100, 20), child2.Bounds);
size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Size(100, 20), size);
}
void UpdateContent()
{
if (!XForms.IsInitialized)
{
Log.Debug(FormsCircularUI.Tag, "Tizen Forms is not initialized");
return;
}
_contentView.Children.Clear();
if (Content != null)
{
_contentView.Children.Add(Content);
var renderer = Xamarin.Forms.Platform.Tizen.Platform.GetOrCreateRenderer(_contentView);
(renderer as LayoutRenderer)?.RegisterOnLayoutUpdated();
var sizeRequest = _contentView.Measure(XForms.NativeParent.Geometry.Width, XForms.NativeParent.Geometry.Height).Request.ToPixel();
_nativeContent = renderer.NativeView;
_nativeContent.MinimumHeight = sizeRequest.Height;
_layout.SetPartContent("elm.swallow.content", _nativeContent, true);
}
else
{
_layout.SetPartContent("elm.swallow.content", null, true);
}
}
void UpdateContent()
{
if (Application.Current.Platform == null)
{
return;
}
_contentView.Children.Clear();
if (Content != null)
{
_contentView.Children.Add(Content);
_contentView.Platform = Application.Current.Platform;
var renderer = Platform.GetOrCreateRenderer(_contentView);
(renderer as LayoutRenderer)?.RegisterOnLayoutUpdated();
var sizeRequest = _contentView.Measure(TForms.NativeParent.Geometry.Width, TForms.NativeParent.Geometry.Height).Request.ToPixel();
_nativeContent = renderer.NativeView;
_nativeContent.MinimumHeight = sizeRequest.Height;
_control.SetPartContent("default", _nativeContent, true);
}
else
{
_control.SetPartContent("default", null, true);
}
}
public void ReinflatesViewsCorrectly()
{
var child1 = new BoxView
{
IsPlatformEnabled = true,
VerticalOptions = LayoutOptions.FillAndExpand,
HeightRequest = 400,
MinimumHeightRequest = 10
};
var child2 = new BoxView
{
IsPlatformEnabled = true,
HeightRequest = 40,
MinimumHeightRequest = 40
};
var stack = new StackLayout
{
Spacing = 0,
IsPlatformEnabled = true,
Children = { child1, child2 }
};
stack.Layout(new Rectangle(0, 0, 100, 100));
Assert.AreEqual(new Rectangle(0, 0, 100, 60), child1.Bounds);
Assert.AreEqual(new Rectangle(0, 60, 100, 40), child2.Bounds);
stack.Measure(100, 100);
stack.Layout(new Rectangle(0, 0, 100, 500));
Assert.AreEqual(new Rectangle(0, 0, 100, 460), child1.Bounds);
Assert.AreEqual(new Rectangle(0, 460, 100, 40), child2.Bounds);
}
public void GetMinimumSizeHorizontal()
{
var stack = new StackLayout
{
IsPlatformEnabled = true,
Spacing = 10,
Orientation = StackOrientation.Horizontal,
Children =
{
new View {
WidthRequest = 100, HeightRequest = 100, IsPlatformEnabled = true
},
new View {
WidthRequest = 100, HeightRequest = 100, IsPlatformEnabled = true
},
new View {
WidthRequest = 100, HeightRequest = 100, MinimumWidthRequest = 10, IsPlatformEnabled = true
}
}
};
var result = stack.Measure(double.PositiveInfinity, double.PositiveInfinity);
Assert.That(result.Minimum, Is.EqualTo(new Size(230, 100)));
}
public void TestVisibility()
{
View child1, child2;
var stack = new StackLayout
{
IsPlatformEnabled = true,
Children =
{
(child1 = new View {
IsPlatformEnabled = true
}),
(child2 = new View {
IsPlatformEnabled = true
})
}
};
var handler = Substitute.For <IViewHandler>();
stack.Handler = handler;
stack.Layout(new Rectangle(0, 0, 100, 100));
var size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Rectangle(0, 0, 100, 20), child1.Bounds);
Assert.AreEqual(new Rectangle(0, 26, 100, 20), child2.Bounds);
Assert.AreEqual(new Size(100, 46), size);
child1.IsVisible = false;
// Verify that the visibility change invalidated the layout, and simulate a native layout update
AssertInvalidated(handler);
stack.ForceLayout();
Assert.False(child1.IsVisible);
Assert.AreEqual(new Rectangle(0, 0, 100, 20), child2.Bounds);
size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Size(100, 20), size);
}
public void TestSizeRequestVertical()
{
var stack = new StackLayout
{
IsPlatformEnabled = true,
Children =
{
new View {
WidthRequest = 20, HeightRequest = 20, IsPlatformEnabled = true
},
new View {
WidthRequest = 30, HeightRequest = 30, IsPlatformEnabled = true
}
}
};
var size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Size(30, 56), size);
}
public void OffOrientationMinimumSize()
{
var stack = new StackLayout
{
IsPlatformEnabled = true,
Spacing = 0
};
stack.Children.Add(new View
{
IsPlatformEnabled = true,
WidthRequest = 100,
HeightRequest = 100,
MinimumWidthRequest = 10,
MinimumHeightRequest = 10
});
var result = stack.Measure(double.PositiveInfinity, double.PositiveInfinity);
Assert.AreEqual(new Size(10, 10), result.Minimum);
}
public void TestLastChildNotVisible()
{
View child1, child2;
var stack = new StackLayout
{
IsPlatformEnabled = true,
Children =
{
(child1 = new View {
WidthRequest = 20, HeightRequest = 20, IsPlatformEnabled = true
}),
(child2 = new View {
WidthRequest = 30, HeightRequest = 30, IsPlatformEnabled = true, IsVisible = false
})
}
};
var r = stack.Measure(100, 100);
Assert.AreEqual(new SizeRequest(new Size(20, 20)), r);
}
public void TestSizeRequestHorizontal()
{
var stack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
IsPlatformEnabled = true,
Children =
{
new View {
WidthRequest = 20, HeightRequest = 20, IsPlatformEnabled = true
},
new View {
WidthRequest = 30, HeightRequest = 30, IsPlatformEnabled = true
}
}
};
var size = stack.Measure(double.PositiveInfinity, double.PositiveInfinity).Request;
Assert.AreEqual(new Size(56, 30), size);
}
void UpdateItems()
{
CurrentItems = GetSwipedItems();
var itemsLayout = new StackLayout
{
Spacing = 0,
Orientation = IsHorizontalSwipe ? StackOrientation.Horizontal : StackOrientation.Vertical,
FlowDirection = SwipeDirection == SwipeDirection.Left ? FlowDirection.RightToLeft : FlowDirection.LeftToRight
};
foreach (var item in CurrentItems)
{
View itemView = null;
if (item is SwipeItem switem)
{
itemView = CreateItemView(switem, !IsHorizontalSwipe);
}
else if (item is SwipeItemView customItem)
{
itemView = CreateItemView(customItem);
}
else
{
continue;
}
var tap = new TapGestureRecognizer();
tap.Command = item.Command;
tap.CommandParameter = item.CommandParameter;
tap.Tapped += (s, e) =>
{
if (item is SwipeItem swipeItem)
{
swipeItem.OnInvoked();
}
if (item is SwipeItemView customSwipeItem)
{
customSwipeItem.OnInvoked();
}
if (CurrentItems.SwipeBehaviorOnInvoked != SwipeBehaviorOnInvoked.RemainOpen)
{
Device.BeginInvokeOnMainThread(() =>
{
_ = SwipeCloseAsync();
});
}
};
itemView.GestureRecognizers.Add(tap);
if (IsHorizontalSwipe)
{
itemView.HorizontalOptions = LayoutOptions.Start;
itemView.VerticalOptions = LayoutOptions.FillAndExpand;
}
else
{
itemView.VerticalOptions = LayoutOptions.Start;
itemView.HorizontalOptions = LayoutOptions.FillAndExpand;
}
itemsLayout.Children.Add(itemView);
}
var itemsRenderer = Platform.GetOrCreateRenderer(itemsLayout);
(itemsRenderer as LayoutRenderer)?.RegisterOnLayoutUpdated();
var measured = itemsLayout.Measure(Element.Width, Element.Height);
MaximumSwipeSize = Forms.ConvertToScaledPixel(
IsHorizontalSwipe ?
Math.Min(measured.Request.Width, Element.Width) :
Math.Min(measured.Request.Height, Element.Height));
Control.Children.Add(itemsRenderer.NativeView);
var itemsGeometry = NativeView.Geometry;
if (SwipeDirection == SwipeDirection.Up)
{
itemsGeometry.Y += (itemsGeometry.Height - MaximumSwipeSize);
}
itemsRenderer.NativeView.Geometry = itemsGeometry;
itemsRenderer.NativeView.StackBelow(Platform.GetRenderer(SwipeView.Content).NativeView);
_itemsRenderer = itemsRenderer;
}
public GateGridView(string pageNumber, int numberOfPages)
{
_contentTitle = pageNumber;
var lanesLabel = new Label
{
Text = "Lanes",
Style = StylesConstants.LabelStyle
};
_lanesButton = new Button
{
Image = "Road",
Style = StylesConstants.ButtonStyle
};
_lanesButton.Clicked += OnLanesButtonClicked;
var aboutLabel = new Label
{
Text = "About",
Style = StylesConstants.LabelStyle,
};
_aboutButton = new Button
{
Image = "About",
Style = StylesConstants.ButtonStyle,
};
_aboutButton.Clicked += OnAboutButtonClicked;
var titleLabel = new Label
{
Text = $"{pageNumber} of {numberOfPages}",
Style = StylesConstants.LabelStyle
};
var enableSwitchText = new Label
{
Text = "Disable Buttons",
Style = StylesConstants.LabelStyle
};
var enableSwitchButton = new Switch
{
Style = StylesConstants.ButtonStyle
};
enableSwitchButton.Toggled += ToggleAllButtons;
var switchStackHorizontal = new StackLayout
{
Style = StylesConstants.StackLayoutStyle,
Orientation = StackOrientation.Horizontal,
Children =
{
enableSwitchText,
enableSwitchButton
}
};
var mainRelativeLayout = new RelativeLayout();
Func <RelativeLayout, double> getswitchStackHorizonalWidth = (p) => switchStackHorizontal.Measure(p.Width, p.Height).Request.Width;
Func <RelativeLayout, double> getTitleLabelWidth = (p) => titleLabel.Measure(p.Width, p.Height).Request.Width;
mainRelativeLayout.Children.Add(lanesLabel,
Constraint.RelativeToParent((parent) => parent.Width / 8),
Constraint.RelativeToParent((parent) => parent.Y + relativeLayoutPadding),
Constraint.RelativeToParent((parent) => parent.Width / 4));
mainRelativeLayout.Children.Add(_lanesButton,
Constraint.RelativeToParent((parent) => parent.Width / 8),
Constraint.RelativeToView(lanesLabel, (parent, view) => view.Y + view.Height + relativeLayoutPadding),
Constraint.RelativeToParent((parent) => parent.Width / 4),
Constraint.Constant(100));
mainRelativeLayout.Children.Add(aboutLabel,
Constraint.RelativeToParent((parent) => parent.Width * 5 / 8),
Constraint.RelativeToParent((parent) => parent.Y + relativeLayoutPadding),
Constraint.RelativeToParent((parent) => parent.Width / 4));
mainRelativeLayout.Children.Add(_aboutButton,
Constraint.RelativeToParent((parent) => parent.Width * 5 / 8),
Constraint.RelativeToView(lanesLabel, (parent, view) => view.Y + view.Height + relativeLayoutPadding),
Constraint.RelativeToParent((parent) => parent.Width / 4),
Constraint.Constant(100));
mainRelativeLayout.Children.Add(switchStackHorizontal,
Constraint.RelativeToParent((parent) => parent.Width / 2 - getswitchStackHorizonalWidth(parent) / 2),
Constraint.RelativeToView(_lanesButton, (parent, view) => view.Y + view.Height + relativeLayoutPadding * 4));
mainRelativeLayout.Children.Add(titleLabel,
Constraint.RelativeToParent((parent) => parent.Width / 2 - getTitleLabelWidth(parent) / 2),
Constraint.RelativeToView(switchStackHorizontal, (parent, view) => view.Y + view.Height + relativeLayoutPadding * 4));
Content = mainRelativeLayout;
}
void OnPromptRequested(Page sender, PromptArguments args)
{
// Verify that the page making the request is child of this platform
if (!_platform.PageIsChildOfPlatform(sender))
{
return;
}
var prompt = Native.Dialog.CreateDialog(Forms.NativeParent, (args.Accept != null));
prompt.Title = args.Title;
var entry = new Entry
{
MinimumWidthRequest = 200,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.FromRgb(250, 250, 250),
TextColor = Color.Black,
Keyboard = args.Keyboard,
};
if (!string.IsNullOrEmpty(args.Placeholder))
{
entry.Placeholder = args.Placeholder;
}
if (args.MaxLength > 0)
{
entry.MaxLength = args.MaxLength;
}
var layout = new StackLayout
{
Spacing = 10,
Children =
{
new Label
{
LineBreakMode = LineBreakMode.CharacterWrap,
TextColor = DeviceInfo.Idiom == DeviceIdiom.Watch ? Color.White : Color.Accent,
Text = args.Message,
HorizontalOptions = LayoutOptions.FillAndExpand,
HorizontalTextAlignment = TextAlignment.Center,
FontSize = Device.GetNamedSize(NamedSize.Subtitle, typeof(Label)),
},
entry,
}
};
layout.Parent = sender;
var layoutrenderer = Platform.GetOrCreateRenderer(layout);
var request = layout.Measure(DeviceInfo.Idiom == DeviceIdiom.Watch ? sender.Width * 0.7 : sender.Width, sender.Height);
(layoutrenderer as ILayoutRenderer).RegisterOnLayoutUpdated();
layoutrenderer.NativeView.MinimumHeight = Forms.ConvertToScaledPixel(request.Request.Height);
layoutrenderer.NativeView.MinimumWidth = Forms.ConvertToScaledPixel(request.Request.Width);
prompt.Content = layoutrenderer.NativeView;
var cancel = new EButton(prompt)
{
Text = args.Cancel
};
prompt.NegativeButton = cancel;
cancel.Clicked += (s, evt) =>
{
args.SetResult(null);
prompt.Dismiss();
};
if (args.Accept != null)
{
var ok = new EButton(prompt)
{
Text = args.Accept
};
prompt.NeutralButton = ok;
ok.Clicked += (s, evt) =>
{
args.SetResult(entry.Text);
prompt.Dismiss();
};
}
entry.Completed += (s, e) =>
{
args.SetResult(entry.Text);
prompt.Dismiss();
};
prompt.BackButtonPressed += (s, evt) =>
{
prompt.Dismiss();
};
prompt.Show();
_alerts.Add(prompt);
prompt.Dismissed += (s, e) => _alerts.Remove(prompt);
}
//Button icons provided by www.flaticon.com
public GateGridView(string pageNumber, int numberOfPages)
{
//Initialie the ContentTitle field
ContentTitle = pageNumber;
#region Create the Lanes Controls
var lanesLabel = new Label
{
Text = "Lanes",
Style = StylesConstants.LabelStyle
};
LanesButton = new Button
{
Image = "Road",
Style = StylesConstants.ButtonStyle
};
LanesButton.Clicked += OnLanesButtonClick;
#endregion
#region Create the About Controls
var aboutLabel = new Label
{
Text = "About",
Style = StylesConstants.LabelStyle,
};
AboutButton = new Button
{
Image = "About",
Style = StylesConstants.ButtonStyle,
};
AboutButton.Clicked += OnAboutButtonClick;
#endregion
var titleLabel = new Label
{
Text = $"{pageNumber} of {numberOfPages}",
Style = StylesConstants.LabelStyle
};
#region Create Enable Button
var enableSwitchText = new Label
{
Text = "Disable Buttons",
Style = StylesConstants.LabelStyle
};
var enableSwitchButton = new Switch
{
Style = StylesConstants.ButtonStyle
};
enableSwitchButton.Toggled += ToggleAllButtons;
var switchStackHorizontal = new StackLayout
{
Style = StylesConstants.StackLayoutStyle,
Orientation = StackOrientation.Horizontal,
Children =
{
enableSwitchText,
enableSwitchButton
}
};
#endregion
#region Create the Relative Layout
var mainRelativeLayout = new RelativeLayout();
Func <RelativeLayout, double> getswitchStackHorizonalWidth = (p) => switchStackHorizontal.Measure(mainRelativeLayout.Width, mainRelativeLayout.Height).Request.Width;
Func <RelativeLayout, double> getTitleLabelWidth = (p) => titleLabel.Measure(mainRelativeLayout.Width, mainRelativeLayout.Height).Request.Width;
mainRelativeLayout.Children.Add(lanesLabel,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 8);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Y + relativeLayoutPadding);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 4);
})
);
mainRelativeLayout.Children.Add(LanesButton,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 8);
}),
Constraint.RelativeToView(lanesLabel, (parent, view) =>
{
return(view.Y + view.Height + relativeLayoutPadding);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 4);
}),
Constraint.Constant(100)
);
mainRelativeLayout.Children.Add(aboutLabel,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width * 5 / 8);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Y + relativeLayoutPadding);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 4);
})
);
mainRelativeLayout.Children.Add(AboutButton,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width * 5 / 8);
}),
Constraint.RelativeToView(lanesLabel, (parent, view) =>
{
return(view.Y + view.Height + relativeLayoutPadding);
}),
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 4);
}),
Constraint.Constant(100)
);
mainRelativeLayout.Children.Add(switchStackHorizontal,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 2 - getswitchStackHorizonalWidth(parent) / 2);
}),
Constraint.RelativeToView(LanesButton, (parent, view) =>
{
return(view.Y + view.Height + relativeLayoutPadding * 4);
})
);
mainRelativeLayout.Children.Add(titleLabel,
Constraint.RelativeToParent((parent) =>
{
return(parent.Width / 2 - getTitleLabelWidth(parent) / 2);
}),
Constraint.RelativeToView(switchStackHorizontal, (parent, view) =>
{
return(view.Y + view.Height + relativeLayoutPadding * 4);
})
);
#endregion
Content = mainRelativeLayout;
}
public AddInspectionView()
{
const string titleText = "New Inspection";
const string bodyText = "Title of Inspection";
const string submitButtonText = "Submit";
_backgroundOverlayBoxView = new BoxView
{
BackgroundColor = _whiteWith75Opacity
};
_backgroundOverlayBoxView.Opacity = 0;
_overlayFrame = new Frame
{
HasShadow = true,
BackgroundColor = Color.White
};
_overlayFrame.Scale = 0;
var titleLabel = new Label
{
FontAttributes = FontAttributes.Bold,
Text = titleText,
HorizontalTextAlignment = TextAlignment.Center,
};
_titleEntry = new Entry
{
Placeholder = "Title"
};
_titleEntry.SetBinding(Entry.TextProperty, nameof(ViewModel.TitleEntryText));
var submitButton = new Button
{
BackgroundColor = _blackWith75PercentOpacity,
TextColor = Color.White,
BorderWidth = 1,
BorderColor = _blackWith75PercentOpacity,
FontAttributes = FontAttributes.Bold,
Margin = new Thickness(5),
Text = submitButtonText
};
submitButton.SetBinding(Button.CommandProperty, nameof(ViewModel.SubmitButtonCommand));
submitButton.Clicked += (sender, e) => DismissView();
_textEntryButtonStack = new StackLayout
{
HorizontalOptions = LayoutOptions.CenterAndExpand,
Spacing = 20,
Children =
{
titleLabel,
_titleEntry,
submitButton
}
};
_textEntryButtonStack.Scale = 0;
_relativeLayout = new RelativeLayout();
Func <RelativeLayout, double> gettextAndButtonStackHeight = (p) => _textEntryButtonStack.Measure(_relativeLayout.Width, _relativeLayout.Height).Request.Height;
Func <RelativeLayout, double> gettextAndButtonStackWidth = (p) => _textEntryButtonStack.Measure(_relativeLayout.Width, _relativeLayout.Height).Request.Width;
_relativeLayout.Children.Add(_backgroundOverlayBoxView,
Constraint.Constant(-10),
Constraint.Constant(0),
Constraint.RelativeToParent(parent => parent.Width + 20),
Constraint.RelativeToParent(parent => parent.Height)
);
_relativeLayout.Children.Add(_overlayFrame,
Constraint.RelativeToParent(parent => parent.Width / 2 - gettextAndButtonStackWidth(parent) / 2 - 20),
Constraint.RelativeToParent(parent => parent.Y + 20),
Constraint.RelativeToParent(parent => gettextAndButtonStackWidth(parent) + 30),
Constraint.RelativeToParent(parent => gettextAndButtonStackHeight(parent) + 30)
);
_relativeLayout.Children.Add(_textEntryButtonStack,
Constraint.RelativeToView(_overlayFrame, (parent, view) => view.X + 15),
Constraint.RelativeToView(_overlayFrame, (parent, view) => view.Y + 15)
);
if (Device.RuntimePlatform == Device.Android)
{
_overlayFrame.IsVisible = false;
_textEntryButtonStack.BackgroundColor = _whiteWith75Opacity;
}
Content = _relativeLayout;
}
public WelcomeView()
{
const string titleText = "Welcome";
const string bodyText = "Enjoy InvestmentDataSampleApp";
const string okButtonText = "Ok, thanks!";
_backgroundOverlayBoxView = new BoxView
{
BackgroundColor = ColorConstants.WhiteWith75Opacity
};
_backgroundOverlayBoxView.Opacity = 0;
_overlayFrame = new Frame
{
HasShadow = true,
BackgroundColor = Color.White
};
_overlayFrame.Scale = 0;
var titleLabel = new Label
{
FontAttributes = FontAttributes.Bold,
Text = titleText,
HorizontalTextAlignment = TextAlignment.Center,
AutomationId = AutomationIdConstants.WelcomeViewTitleLabel
};
var bodyLabel = new Label
{
Text = bodyText,
HorizontalTextAlignment = TextAlignment.Center,
AutomationId = AutomationIdConstants.WelcomeViewBodyLabel
};
var okButton = new Button
{
Style = StyleConstants.WelcomeViewButtonStyle,
TextColor = Color.White,
FontAttributes = FontAttributes.Bold,
Margin = new Thickness(5),
Text = okButtonText,
AutomationId = AutomationIdConstants.WelcomeViewOkButton
};
okButton.SetBinding <OpportunitiesViewModel>(Button.CommandProperty, vm => vm.OkButtonTapped);
_textAndButtonStack = new StackLayout
{
HorizontalOptions = LayoutOptions.CenterAndExpand,
Spacing = 20,
Children =
{
titleLabel,
bodyLabel,
okButton
}
};
_textAndButtonStack.Scale = 0;
_relativeLayout = new RelativeLayout();
Func <RelativeLayout, double> gettextAndButtonStackHeight = (p) => _textAndButtonStack.Measure(_relativeLayout.Width, _relativeLayout.Height).Request.Height;
Func <RelativeLayout, double> gettextAndButtonStackWidth = (p) => _textAndButtonStack.Measure(_relativeLayout.Width, _relativeLayout.Height).Request.Width;
_relativeLayout.Children.Add(_backgroundOverlayBoxView,
Constraint.Constant(-10),
Constraint.Constant(0),
Constraint.RelativeToParent(parent => parent.Width + 20),
Constraint.RelativeToParent(parent => parent.Height)
);
_relativeLayout.Children.Add(_overlayFrame,
Constraint.RelativeToParent(parent => parent.Width / 2 - gettextAndButtonStackWidth(parent) / 2 - 20),
Constraint.RelativeToParent(parent => parent.Height / 2 - gettextAndButtonStackHeight(parent) / 2 - 10),
Constraint.RelativeToParent(parent => gettextAndButtonStackWidth(parent) + 30),
Constraint.RelativeToParent(parent => gettextAndButtonStackHeight(parent) + 30)
);
_relativeLayout.Children.Add(_textAndButtonStack,
Constraint.RelativeToView(_overlayFrame, (parent, view) => view.X + 15),
Constraint.RelativeToView(_overlayFrame, (parent, view) => view.Y + 15)
);
if (Device.OS == TargetPlatform.Android)
{
_overlayFrame.IsVisible = false;
_textAndButtonStack.BackgroundColor = ColorConstants.WhiteWith90Opacity;
}
Content = _relativeLayout;
}