protected override void Init()
{
var red = new BoxView
{
BackgroundColor = Color.Red,
WidthRequest = 50,
HeightRequest = 50,
TranslationX = 25
};
var green = new BoxView
{
BackgroundColor = Color.Green,
WidthRequest = 50,
HeightRequest = 50
};
var blue = new BoxView
{
BackgroundColor = Color.Blue,
WidthRequest = 50,
HeightRequest = 50,
TranslationX = -25
};
_boxStack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
Spacing = 0,
Margin = new Thickness(0, 50, 0, 0),
HorizontalOptions = LayoutOptions.Center,
Children =
{
red,
green,
blue
}
};
_boxStack.ChildrenReordered += BoxStackOnChildrenReordered;
var raiseButtons = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.Center,
Children =
{
new Button
{
Text = "Raise Red",
WidthRequest = 110,
Command = new Command(() => _boxStack.RaiseChild(red))
},
new Button
{
Text = "Raise Green",
WidthRequest = 110,
Command = new Command(() => _boxStack.RaiseChild(green))
},
new Button
{
Text = "Raise Blue",
WidthRequest = 110,
Command = new Command(() => _boxStack.RaiseChild(blue))
}
}
};
var lowerButtons = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.Center,
Children =
{
new Button
{
Text = "Lower Red",
WidthRequest = 110,
Command = new Command(() => _boxStack.LowerChild(red))
},
new Button
{
Text = "Lower Green",
WidthRequest = 110,
Command = new Command(() => _boxStack.LowerChild(green))
},
new Button
{
Text = "Lower Blue",
WidthRequest = 110,
Command = new Command(() => _boxStack.LowerChild(blue))
}
}
};
_colorsPositionLabel = new Label
{
FormattedText = new FormattedString()
};
FormatColorsChildrenPositionText();
var colorsPositionStack = new StackLayout()
{
Margin = new Thickness(0, 50, 0, 0),
Children =
{
new Label()
{
Text = "Colors collection order (i.e. z-index)"
},
_colorsPositionLabel
}
};
var instructions = new StackLayout()
{
Margin = new Thickness(0, 50, 0, 0),
HorizontalOptions = LayoutOptions.Center,
Children =
{
new Label()
{
Text = "When LOWERING an item it's being moved to the START of the collection of children, therefore decreasing it's z-index",
FontSize = 15
},
new Label()
{
Text = "When RAISING an item it's being moved to the END of the list of children, therefore increasing its z-index",
FontSize = 15
},
new Label()
{
Text = "For instance, if you decide to press LOWER GREEN button, then the GREEN color should no longer be visible - it will become the first item in the list (lowest z-index) and therefore it will get covered by RED and BLUE.",
Margin = new Thickness(0, 10, 0, 0)
}
}
};
Content = new StackLayout
{
Children =
{
raiseButtons,
lowerButtons,
_boxStack,
colorsPositionStack,
instructions
}
};
}
protected override void Init()
{
var red = new BoxView
{
BackgroundColor = Color.Red,
WidthRequest = 50,
HeightRequest = 50,
TranslationX = 25
};
var green = new BoxView
{
BackgroundColor = Color.Green,
WidthRequest = 50,
HeightRequest = 50
};
var blue = new BoxView
{
BackgroundColor = Color.Blue,
WidthRequest = 50,
HeightRequest = 50,
TranslationX = -25
};
var boxStack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
Spacing = 0,
Margin = new Thickness(0, 50, 0, 0),
HorizontalOptions = LayoutOptions.Center,
Children =
{
red,
green,
blue
}
};
var raiseButtons = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.Center,
Children =
{
new Button
{
Text = "Raise Red",
WidthRequest = 110,
Command = new Command(() => boxStack.RaiseChild(red))
},
new Button
{
Text = "Raise Green",
WidthRequest = 110,
Command = new Command(() => boxStack.RaiseChild(green))
},
new Button
{
Text = "Raise Blue",
WidthRequest = 110,
Command = new Command(() => boxStack.RaiseChild(blue))
}
}
};
var lowerButtons = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.Center,
Children =
{
new Button
{
Text = "Lower Red",
WidthRequest = 110,
Command = new Command(() => boxStack.LowerChild(red))
},
new Button
{
Text = "Lower Green",
WidthRequest = 110,
Command = new Command(() => boxStack.LowerChild(green))
},
new Button
{
Text = "Lower Blue",
WidthRequest = 110,
Command = new Command(() => boxStack.LowerChild(blue))
}
}
};
Content = new StackLayout
{
Children =
{
raiseButtons,
lowerButtons,
boxStack
}
};
}
