public IndicatorCodeGallery()
{
Title = "IndicatorView Gallery";
//On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);
var nItems = 10;
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
}
}
};
var itemsLayout = new LinearItemsLayout(ItemsLayoutOrientation.Horizontal)
{
SnapPointsType = SnapPointsType.MandatorySingle,
SnapPointsAlignment = SnapPointsAlignment.Center
};
var itemTemplate = ExampleTemplates.CarouselTemplate();
_carouselView = new CarouselView
{
ItemsLayout = itemsLayout,
ItemTemplate = itemTemplate,
BackgroundColor = Colors.LightGray,
AutomationId = "TheCarouselView"
};
layout.Children.Add(_carouselView);
var generator = new ItemsSourceGenerator(_carouselView, nItems, ItemsSourceType.ObservableCollection);
layout.Children.Add(generator);
generator.GenerateItems();
_carouselView.PropertyChanged += CarouselViewPropertyChanged;
(_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>).CollectionChanged += IndicatorCodeGalleryCollectionChanged;
var indicatorView = new IndicatorView
{
HorizontalOptions = LayoutOptions.Center,
Margin = new Thickness(12, 6, 12, 12),
IndicatorColor = Colors.Gray,
SelectedIndicatorColor = Colors.Black,
IndicatorsShape = IndicatorShape.Square,
AutomationId = "TheIndicatorView",
Count = 5,
};
_carouselView.IndicatorView = indicatorView;
layout.Children.Add(indicatorView);
var stckColors = new StackLayout {
Orientation = StackOrientation.Horizontal
};
stckColors.Children.Add(new Label {
VerticalOptions = LayoutOptions.Center, Text = "IndicatorColor"
});
var colors = new List <string>
{
"Black",
"Blue",
"Red"
};
var colorsPicker = new Picker
{
ItemsSource = colors,
WidthRequest = 150
};
colorsPicker.SelectedIndex = 0;
colorsPicker.SelectedIndexChanged += (s, e) =>
{
var selectedIndex = colorsPicker.SelectedIndex;
switch (selectedIndex)
{
case 0:
indicatorView.IndicatorColor = Colors.Black;
break;
case 1:
indicatorView.IndicatorColor = Colors.Blue;
break;
case 2:
indicatorView.IndicatorColor = Colors.Red;
break;
}
};
stckColors.Children.Add(colorsPicker);
layout.Children.Add(stckColors);
var stckTemplate = new StackLayout {
Orientation = StackOrientation.Horizontal
};
stckTemplate.Children.Add(new Label {
VerticalOptions = LayoutOptions.Center, Text = "IndicatorTemplate"
});
var templates = new List <string>
{
"Circle",
"Square",
"Template"
};
var templatePicker = new Picker
{
ItemsSource = templates,
WidthRequest = 150,
TextColor = Colors.Black
};
templatePicker.SelectedIndexChanged += (s, e) =>
{
var selectedIndex = templatePicker.SelectedIndex;
switch (selectedIndex)
{
case 0:
indicatorView.IndicatorTemplate = null;
indicatorView.IndicatorsShape = IndicatorShape.Circle;
break;
case 1:
indicatorView.IndicatorTemplate = null;
indicatorView.IndicatorsShape = IndicatorShape.Square;
break;
case 2:
indicatorView.IndicatorTemplate = ExampleTemplates.IndicatorTemplate();
break;
}
};
templatePicker.SelectedIndex = 0;
stckTemplate.Children.Add(templatePicker);
layout.Children.Add(stckTemplate);
var stckSize = new StackLayout {
Orientation = StackOrientation.Horizontal
};
stckSize.Children.Add(new Label {
VerticalOptions = LayoutOptions.Center, Text = "Indicator Size"
});
//indicatorView.IndicatorSize = 25;
var sizeSlider = new Slider
{
WidthRequest = 150,
Value = indicatorView.IndicatorSize,
Maximum = 50,
};
sizeSlider.ValueChanged += (s, e) =>
{
var indicatorSize = sizeSlider.Value;
indicatorView.IndicatorSize = indicatorSize;
};
stckSize.Children.Add(sizeSlider);
layout.Children.Add(stckSize);
Grid.SetRow(generator, 0);
Grid.SetRow(stckColors, 1);
Grid.SetRow(stckTemplate, 2);
Grid.SetRow(stckSize, 3);
Grid.SetRow(_carouselView, 4);
Grid.SetRow(indicatorView, 6);
var layoutBtn = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.Center,
};
var btnRemove = new Button
{
Text = "DEL First",
FontSize = 8,
AutomationId = "btnRemoveFirst",
BackgroundColor = Colors.LightGray,
Padding = new Thickness(5),
Command = new Command(() =>
{
var items = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
items.Remove(items[0]);
})
};
_btnPrev = new Button
{
Text = "Prev",
FontSize = 8,
AutomationId = "btnPrev",
BackgroundColor = Colors.LightGray,
Padding = new Thickness(5),
Command = new Command(() =>
{
_carouselView.Position--;
}, () =>
{
return(_carouselView.Position > 0);
})
};
_btnNext = new Button
{
Text = "Next",
FontSize = 8,
AutomationId = "btnNext",
BackgroundColor = Colors.LightGray,
Padding = new Thickness(5),
Command = new Command(() =>
{
_carouselView.Position++;
}, () =>
{
var items = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
return(_carouselView.Position < items.Count - 1);
})
};
var btnRemoveLast = new Button
{
Text = "DEL Last",
FontSize = 8,
AutomationId = "btnRemoveLast",
BackgroundColor = Colors.LightGray,
Padding = new Thickness(5),
Command = new Command(() =>
{
var items = (_carouselView.ItemsSource as ObservableCollection <CollectionViewGalleryTestItem>);
var indexToRemove = items.Count - 1;
items.Remove(items[indexToRemove]);
})
};
layoutBtn.Children.Add(btnRemove);
layoutBtn.Children.Add(_btnPrev);
layoutBtn.Children.Add(_btnNext);
layoutBtn.Children.Add(btnRemoveLast);
layout.Children.Add(layoutBtn);
Grid.SetRow(layoutBtn, 5);
Content = layout;
}
public CarouselCodeGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Horizontal)
{
//On<iOS>().SetLargeTitleDisplay(LargeTitleDisplayMode.Never);
_scrollInfoLabel.MaxLines = 1;
_scrollInfoLabel.LineBreakMode = LineBreakMode.TailTruncation;
_orientation = orientation;
Title = $"CarouselView (Code, {orientation})";
var nItems = 5;
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
var itemsLayout =
new LinearItemsLayout(orientation)
{
SnapPointsType = SnapPointsType.MandatorySingle,
SnapPointsAlignment = SnapPointsAlignment.Center
};
var itemTemplate = ExampleTemplates.CarouselTemplate();
var carouselView = new CarouselView
{
ItemsLayout = itemsLayout,
ItemTemplate = itemTemplate,
Margin = new Thickness(0, 10, 0, 10),
BackgroundColor = Colors.Red,
AutomationId = "TheCarouselView",
//Loop = false
};
if (orientation == ItemsLayoutOrientation.Horizontal)
{
carouselView.PeekAreaInsets = new Thickness(30, 0, 30, 0);
}
else
{
carouselView.PeekAreaInsets = new Thickness(0, 30, 0, 30);
}
carouselView.Scrolled += CarouselViewScrolled;
StackLayout StackLayoutInfo = GetReadOnlyInfo(carouselView);
var generator = new ItemsSourceGenerator(carouselView, initialItems: nItems, itemsSourceType: ItemsSourceType.ObservableCollection);
var positionControl = new PositionControl(carouselView, nItems);
var spacingModifier = new SpacingModifier(carouselView.ItemsLayout, "Update Spacing");
var stckPeek = new StackLayout {
Orientation = StackOrientation.Horizontal
};
stckPeek.Children.Add(new Label {
Text = "Peek"
});
var padi = new Microsoft.Maui.Controls.Slider
{
Maximum = 100,
Minimum = 0,
Value = 30,
WidthRequest = 100,
BackgroundColor = Colors.Pink
};
padi.ValueChanged += (s, e) =>
{
var peek = padi.Value;
if (orientation == ItemsLayoutOrientation.Horizontal)
{
carouselView.PeekAreaInsets = new Thickness(peek, 0, peek, 0);
}
else
{
carouselView.PeekAreaInsets = new Thickness(0, peek, 0, peek);
}
};
stckPeek.Children.Add(padi);
var content = new Grid();
content.Children.Add(carouselView);
#if DEBUG
// Uncomment this line to add a helper to visualize the center of each element.
//content.Children.Add(CreateDebuggerLines());
#endif
layout.Children.Add(generator);
layout.Children.Add(positionControl);
layout.Children.Add(StackLayoutInfo);
layout.Children.Add(stckPeek);
layout.Children.Add(spacingModifier);
layout.Children.Add(_scrollInfoLabel);
layout.Children.Add(content);
Grid.SetRow(positionControl, 1);
Grid.SetRow(StackLayoutInfo, 2);
Grid.SetRow(stckPeek, 3);
Grid.SetRow(spacingModifier, 4);
Grid.SetRow(_scrollInfoLabel, 5);
Grid.SetRow(content, 6);
Content = layout;
generator.CollectionChanged += (sender, e) =>
{
positionControl.UpdatePositionCount(generator.Count);
};
generator.GenerateItems();
positionControl.UpdatePosition(1);
}