IView CreateSampleCursorSelection()
{
var layout = new Microsoft.Maui.Controls.Layout2.GridLayout()
{
ColumnSpacing = 5, RowSpacing = 8, BackgroundColor = Colors.LightGreen
};
layout.AddRowDefinition(new RowDefinition()
{
Height = new GridLength(50)
});
layout.AddColumnDefinition(new ColumnDefinition()
{
Width = new GridLength(150)
});
layout.AddColumnDefinition(new ColumnDefinition()
{
Width = new GridLength(80)
});
layout.AddColumnDefinition(new ColumnDefinition()
{
Width = new GridLength(80)
});
Entry targetEntry = new() { Placeholder = "Selectable Text" };
Entry forPosition = new() { Keyboard = Keyboard.Numeric, Placeholder = "CursorPos" };
forPosition.TextChanged += (sender, args) =>
{
if (!int.TryParse(args.NewTextValue, out int newPos))
{
return;
}
targetEntry.CursorPosition = newPos;
};
Entry forSelectionLen = new() { Keyboard = Keyboard.Numeric, Placeholder = "SelectionLen" };
forSelectionLen.TextChanged += (sender, args) =>
{
if (!int.TryParse(args.NewTextValue, out int newSelectionLen))
{
return;
}
targetEntry.SelectionLength = newSelectionLen;
};
layout.Add(targetEntry);
layout.Add(forPosition);
layout.SetColumn(forPosition, 1);
layout.Add(forSelectionLen);
layout.SetColumn(forSelectionLen, 2);
return(layout);
}
IView CreateTransformations()
{
var label = new Button
{
BackgroundColor = Colors.Red,
TextColor = Colors.White,
Text = "Transformations",
};
var rotationSlider = new Slider
{
Minimum = -360,
Maximum = 360
};
rotationSlider.ValueChanged += (sender, e) => label.Rotation = e.NewValue;
var verticalStack = new VerticalStackLayout
{
rotationSlider,
label,
};
return(verticalStack);
}
IView CreateAnimations()
{
var image = new Image {
Source = "dotnet_bot.png", VerticalOptions = LayoutOptions.CenterAndExpand
};
var animateButton = new Button {
Text = "Animate", VerticalOptions = LayoutOptions.End
};
animateButton.Clicked += async(sender, args) =>
{
await image.RotateTo(360, 2000);
image.Rotation = 0;
};
var verticalStack = new VerticalStackLayout
{
image,
animateButton,
};
return(verticalStack);
}
IView CreateShapes()
{
var ellipse = new Ellipse {
Fill = new SolidColorBrush(Colors.Red), Stroke = new SolidColorBrush(Colors.Blue), StrokeThickness = 4, HeightRequest = 120, WidthRequest = 200
};
var line = new Line {
X1 = 0, Y1 = 0, X2 = 80, Y2 = 90, Fill = new SolidColorBrush(Colors.Red), Stroke = new SolidColorBrush(Colors.Green), StrokeThickness = 4, StrokeDashArray = new double[] { 2, 2 }, HeightRequest = 200, WidthRequest = 200
};
Geometry pathData = (Geometry) new PathGeometryConverter().ConvertFromInvariantString("M15.999996,0L31.999999,13.000001 15.999996,26.199999 0,13.000001z");
var path = new Microsoft.Maui.Controls.Shapes.Path {
Data = pathData, Fill = new SolidColorBrush(Colors.Pink), Stroke = new SolidColorBrush(Colors.Red), StrokeThickness = 1, HeightRequest = 100, WidthRequest = 100
};
var polyline = new Polyline {
Points = new[] { new Point(10, 10), new Point(100, 50), new Point(50, 90) }, Stroke = new SolidColorBrush(Colors.Black), StrokeThickness = 2, StrokeDashArray = new double[] { 1, 1, 1, 1 }, HeightRequest = 100, WidthRequest = 100
};
var polygon = new Polygon {
Points = new[] { new Point(10, 10), new Point(100, 50), new Point(50, 90) }, Fill = new SolidColorBrush(Colors.LightBlue), Stroke = new SolidColorBrush(Colors.Black), StrokeThickness = 2, StrokeDashArray = new double[] { 2, 2 }, HeightRequest = 100, WidthRequest = 100
};
var rectangle = new Microsoft.Maui.Controls.Shapes.Rectangle {
RadiusX = 12, RadiusY = 6, Fill = new LinearGradientBrush(new GradientStopCollection {
new GradientStop(Colors.Green, 0), new GradientStop(Colors.Blue, 1)
}, new Point(0, 0), new Point(1, 0)), Stroke = new SolidColorBrush(Colors.Purple), StrokeThickness = 8, StrokeDashArray = new float[] { 2, 2 }, HeightRequest = 120, WidthRequest = 200
};
var verticalStack = new VerticalStackLayout
{
ellipse,
line,
path,
polyline,
polygon,
rectangle
};
return(verticalStack);
}
void AddTextResizeDemo(Microsoft.Maui.ILayout layout)
{
var resizeTestButton = new Button {
Text = "Resize Test"
};
var resizeTestLabel = new Label {
Text = "Short Text", BackgroundColor = Colors.LightBlue, HorizontalOptions = LayoutOptions.Start
};
var explicitWidthTestLabel = new Label {
Text = "Short Text", BackgroundColor = Colors.LightGreen, WidthRequest = 200
};
var widthAndHeightTestLabel = new Label {
Text = "Short Text", BackgroundColor = Colors.MediumSeaGreen, WidthRequest = 150, HeightRequest = 40
};
resizeTestButton.Clicked += (sender, args) =>
{
if (resizeTestLabel.Text == "Short Text")
{
resizeTestLabel.Text = LoremIpsum;
explicitWidthTestLabel.Text = LoremIpsum;
widthAndHeightTestLabel.Text = LoremIpsum;
}
else
{
resizeTestLabel.Text = "Short Text";
explicitWidthTestLabel.Text = "Short Text";
widthAndHeightTestLabel.Text = "Short Text";
}
};
layout.Add(resizeTestButton);
layout.Add(resizeTestLabel);
layout.Add(widthAndHeightTestLabel);
layout.Add(explicitWidthTestLabel);
}
void SetupVisibilityTest()
{
var layout = new VerticalStackLayout()
{
BackgroundColor = Colors.BurlyWood
};
var button1 = new Button {
Text = "Controls", Margin = new Thickness(0, 40)
};
var button2 = new Button {
Text = "MAUI"
};
var controlsLabel = new Label {
Text = "Controls Label"
};
controlsLabel.IsVisible = true;
var alwaysVisible = new Label {
Text = "Always visible"
};
var mauiLabel = new VisibilityLabel()
{
Text = "Core Label"
};
button1.Clicked += (sender, args) =>
{
controlsLabel.IsVisible = !controlsLabel.IsVisible;
};
button2.Clicked += (sender, args) =>
{
switch ((mauiLabel as IFrameworkElement).Visibility)
{
case Visibility.Visible:
mauiLabel.SetVisibility(Visibility.Hidden);
break;
case Visibility.Hidden:
mauiLabel.SetVisibility(Visibility.Collapsed);
break;
case Visibility.Collapsed:
mauiLabel.SetVisibility(Visibility.Visible);
break;
}
};
layout.Add(button1);
layout.Add(button2);
layout.Add(controlsLabel);
layout.Add(mauiLabel);
layout.Add(alwaysVisible);
Content = layout;
}
class TestDrawable : IDrawable
{
public LayoutUpdatesPage()
{
var root = new GridLayout()
{
Margin = 40, BackgroundColor = Colors.Beige
};
root.RowDefinitions = new RowDefinitionCollection()
{
new RowDefinition()
{
Height = GridLength.Auto
},
new RowDefinition()
{
Height = GridLength.Auto
},
new RowDefinition()
{
Height = GridLength.Auto
},
new RowDefinition()
{
Height = GridLength.Auto
}
};
root.ColumnDefinitions = new ColumnDefinitionCollection()
{
new ColumnDefinition()
{
Width = GridLength.Star
},
new ColumnDefinition()
{
Width = GridLength.Star
},
};
var addButton = new Button {
Text = "Add"
};
root.Add(addButton);
var removeButton = new Button {
Text = "Remove"
};
root.Add(removeButton);
root.SetColumn(removeButton, 1);
var insertButton = new Button {
Text = "Insert"
};
root.Add(insertButton);
root.SetRow(insertButton, 1);
var clearButton = new Button {
Text = "Clear"
};
root.Add(clearButton);
root.SetColumn(clearButton, 1);
root.SetRow(clearButton, 1);
var updateButton = new Button {
Text = "Update"
};
root.Add(updateButton);
root.SetRow(updateButton, 2);
var stack = new VerticalStackLayout();
double shapeWidth = 200;
double shapeHeight = 80;
double overlap = -20;
double leftMarginIncrement = 20;
var r1 = new Shapes.Rectangle()
{
WidthRequest = shapeWidth, HeightRequest = shapeHeight, Fill = new SolidColorBrush(NextColor()), Margin = new Thickness(0, 0, 0, 0)
};
var r2 = new Shapes.Rectangle()
{
WidthRequest = shapeWidth, HeightRequest = shapeHeight, Fill = new SolidColorBrush(NextColor()), Margin = new Thickness(leftMarginIncrement, overlap, 0, 0)
};
stack.Add(r1);
stack.Add(r2);
root.Add(stack);
root.SetRow(stack, 3);
root.SetColumnSpan(stack, 2);
addButton.Clicked += (sender, args) =>
{
var left = leftMarginIncrement * stack.Count;
var rect = new Shapes.Rectangle()
{
WidthRequest = shapeWidth, HeightRequest = shapeHeight, Fill = new SolidColorBrush(NextColor()), Margin = new Thickness(left, overlap, 0, 0)
};
stack.Add(rect);
};
insertButton.Clicked += (sender, args) =>
{
if (stack.Count < 2)
{
return;
}
var left = leftMarginIncrement * stack.Count;
var rect = new Shapes.Rectangle()
{
WidthRequest = shapeWidth, HeightRequest = shapeHeight, Fill = new SolidColorBrush(NextColor()), Margin = new Thickness(left, overlap, 0, 0)
};
stack.Insert(1, rect);
};
clearButton.Clicked += (sender, args) =>
{
stack.Clear();
};
removeButton.Clicked += (sender, args) =>
{
if (stack.Count > 0)
{
stack.RemoveAt(stack.Count - 1);
}
};
updateButton.Clicked += (sender, args) =>
{
if (stack.Count > 0)
{
var left = leftMarginIncrement * stack.Count;
var rect = new Shapes.Rectangle()
{
WidthRequest = shapeWidth, HeightRequest = shapeHeight, Fill = new SolidColorBrush(NextColor()), Margin = new Thickness(left, overlap, 0, 0)
};
stack[0] = rect;
}
};
Content = root;
}
void UpdateBorder()
{
var startColor = GetColorFromString(BorderStartColor.Text);
var endColor = GetColorFromString(BorderEndColor.Text);
BorderStartColor.BackgroundColor = startColor;
BorderEndColor.BackgroundColor = endColor;
Shape borderShape = null;
switch (BorderShapePicker.SelectedIndex)
{
case 0:
borderShape = new Microsoft.Maui.Controls.Shapes.Rectangle();
break;
case 1:
borderShape = new RoundRectangle
{
CornerRadius = new CornerRadius(TopLeftCornerSlider.Value, TopRightCornerSlider.Value,
BottomLeftCornerSlider.Value, BottomRightCornerSlider.Value)
};
break;
case 2:
borderShape = new Ellipse();
break;
}
BorderView.StrokeShape = borderShape;
BorderView.Stroke = new LinearGradientBrush
{
StartPoint = new Point(0, 0),
EndPoint = new Point(1, 0),
GradientStops = new GradientStopCollection
{
new Microsoft.Maui.Controls.GradientStop {
Color = startColor, Offset = 0.0f
},
new Microsoft.Maui.Controls.GradientStop {
Color = endColor, Offset = 0.9f
}
}
};
BorderView.StrokeThickness = BorderWidthSlider.Value;
var borderDashArrayString = BorderDashArrayEntry.Text;
if (string.IsNullOrEmpty(borderDashArrayString))
{
BorderView.StrokeDashArray = new DoubleCollection();
}
else
{
var doubleCollectionConverter = new DoubleCollectionConverter();
var doubleCollection = (DoubleCollection)doubleCollectionConverter.ConvertFromString(borderDashArrayString);
BorderView.StrokeDashArray = doubleCollection;
}
BorderView.StrokeDashOffset = BorderDashOffsetSlider.Value;
PenLineJoin borderLineJoin = PenLineJoin.Miter;
switch (BorderLineJoinPicker.SelectedIndex)
{
case 0:
borderLineJoin = PenLineJoin.Miter;
break;
case 1:
borderLineJoin = PenLineJoin.Round;
break;
case 2:
borderLineJoin = PenLineJoin.Bevel;
break;
}
BorderView.StrokeLineJoin = borderLineJoin;
PenLineCap borderLineCap = PenLineCap.Flat;
switch (BorderLineCapPicker.SelectedIndex)
{
case 0:
borderLineCap = PenLineCap.Flat;
break;
case 1:
borderLineCap = PenLineCap.Round;
break;
case 2:
borderLineCap = PenLineCap.Square;
break;
}
BorderView.StrokeLineCap = borderLineCap;
}
