public RelativeLayout()
{
InitializeComponent();
var layout = new Xamarin.Forms.RelativeLayout();
Content = layout;
var aquaBox = new BoxView {
Color = Color.Aqua
};
layout.Children.Add
(aquaBox,
widthConstraint: Constraint.RelativeToParent(parent => parent.Width),
heightConstraint: Constraint.RelativeToParent(parent => parent.Height * 0.3));
var silverBox = new BoxView {
Color = Color.Silver
};
layout.Children.Add
(silverBox,
yConstraint: Constraint.RelativeToView(aquaBox, (RelativeLayout, element) => element.Height + 20));
}
public GestureTestPage()
{
#region Page
//var pageListener = FormsGestures.Listener.For(this);
//pageListener.LongPressing += (s, e) => System.Diagnostics.Debug.WriteLine("\tPAGE LONG PRESSING");
//pageListener.LongPressed += (s, e) => System.Diagnostics.Debug.WriteLine("\tPAGE LONG PRESSED");
#endregion
#region Xamarin.Forms.Button
var button = new Button
{
BackgroundColor = Color.Pink,
Text = "Hello",
BorderColor = Color.Blue,
BorderWidth = 3,
};
button.Clicked += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON CLICKED!!!!");
var buttonListener = FormsGestures.Listener.For(button);
buttonListener.Down += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON DOWN [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]"); // does not work with UIControl derived elements
buttonListener.RightClicked += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON RIGHT CLICK[" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
buttonListener.LongPressing += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON LONG PRESSING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
buttonListener.Panning += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBUTTON PANNING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
button.TranslationX += e.DeltaDistance.X;
button.TranslationY += e.DeltaDistance.Y;
};
buttonListener.Pinching += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBUTTON PINCHING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
button.Scale *= e.DeltaScale;
};
buttonListener.Rotating += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBUTTON ROTATING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
button.Rotation += e.DeltaAngle;
};
buttonListener.Up += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON UP [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]"); // does not work with UIControl derived elements
buttonListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON TAPPED #[" + e.NumberOfTaps + "] [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]"); // does not work with UIControl derived elements
buttonListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON DOUBLE TAPPED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]"); // does not work with UIControl derived elements
buttonListener.LongPressed += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON LONG PRESSED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
buttonListener.Panned += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON PANNED TotalDistance=[" + e.TotalDistance + "][" + e.Center + "][" + e.ViewPosition + "]");
buttonListener.Swiped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON SWIPED!!! Velocity=[" + e.VelocityX + "," + e.VelocityY + "][" + e.Center + "][" + e.ViewPosition + "]");
buttonListener.Pinched += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON PINCHED TotalScale=[" + e.TotalScale + "][" + e.Center + "][" + e.ViewPosition + "]");
buttonListener.Rotated += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON ROTATED TotalAngle=[" + e.TotalAngle + "][" + e.Center + "][" + e.ViewPosition + "]");
#endregion
#region Forms9Patch.Frame
var frame = new Forms9Patch.Frame
{
BackgroundColor = Color.Orange,
WidthRequest = 70,
HeightRequest = 70,
HasShadow = true,
OutlineColor = Color.Green,
OutlineRadius = 0,
OutlineWidth = 1,
Content = new Forms9Patch.Label {
Text = "pizza", TextColor = Color.White, BackgroundColor = Color.Blue, HorizontalOptions = LayoutOptions.Start, VerticalOptions = LayoutOptions.Start
}
};
var frameListener = FormsGestures.Listener.For(frame);
frameListener.Down += (sender, e) =>
{
e.Handled = true;
System.Diagnostics.Debug.WriteLine("\tFRAME DOWN [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
};
frameListener.LongPressing += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME LONG PRESSING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.RightClicked += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME RIGHT CLICK[" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.Panning += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tFRAME PANNING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frame.TranslationX += e.DeltaDistance.X;
frame.TranslationY += e.DeltaDistance.Y;
};
frameListener.Pinching += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tFRAME PINCHING [" + e.Center + "][" + e.Touches[0] + "][" + e.DeltaScale + "][" + e.ViewPosition + "]");
frame.Scale *= e.DeltaScale;
};
frameListener.Rotating += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tFRAME ROTATING [" + e.Center + "][" + e.Touches[0] + "][" + e.DeltaAngle + "][" + e.ViewPosition + "]");
frame.Rotation += e.DeltaAngle;
};
frameListener.Up += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME UP [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.Tapping += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME TAPPING #[" + e.NumberOfTaps + "] [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME TAPPED #[" + e.NumberOfTaps + "] [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME DOUBLE TAPPED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.LongPressed += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME LONG PRESSED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
frameListener.Panned += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME PANNED TotalDistance=[" + e.TotalDistance + "][" + e.Center + "][" + e.ViewPosition + "]");
frameListener.Swiped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME SWIPED!!! Velocity=" + e.VelocityX + "," + e.VelocityY + "][" + e.Center + "][" + e.ViewPosition + "]");
frameListener.Pinched += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME PINCHED TotalScale=[" + e.TotalScale + "][" + e.Center + "][" + e.ViewPosition + "]");
frameListener.Rotated += (sender, e) => System.Diagnostics.Debug.WriteLine("\tFRAME ROTATED TotalAngle[" + e.TotalAngle + "][" + e.Center + "][" + e.ViewPosition + "]");
#endregion
#region Xamarin.Forms.BoxView
var box = new BoxView
{
BackgroundColor = Color.Green,
};
var boxListener = FormsGestures.Listener.For(box);
//boxListener.Down += OnDown;
boxListener.Down += (sender, e) =>
{
e.Handled = true;
System.Diagnostics.Debug.WriteLine("\tBOX DOWN [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
};
boxListener.LongPressing += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX LONG PRESSING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.RightClicked += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX RIGHT CLICK[" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.Panning += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBOX PANNING [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
box.TranslationX += e.DeltaDistance.X;
box.TranslationY += e.DeltaDistance.Y;
};
boxListener.Pinching += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBOX PINCHING [" + e.Center + "][" + e.Touches[0] + "][" + e.DeltaScale + "][" + e.ViewPosition + "]");
box.Scale *= e.DeltaScale;
};
boxListener.Rotating += (sender, e) =>
{
System.Diagnostics.Debug.WriteLine("\tBOX ROTATING [" + e.Center + "][" + e.Touches[0] + "][" + e.DeltaAngle + "][" + e.ViewPosition + "]");
box.Rotation += e.DeltaAngle;
};
boxListener.Up += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX UP [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.Tapping += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX TAPPING #[" + e.NumberOfTaps + "] [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX TAPPED #[" + e.NumberOfTaps + "] [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX DOUBLE TAPPED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.LongPressed += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX LONG PRESSED [" + e.Center + "][" + e.Touches[0] + "][" + e.ViewPosition + "]");
boxListener.Panned += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX PANNED TotalDistance=[" + e.TotalDistance + "][" + e.Center + "][" + e.ViewPosition + "]");
boxListener.Swiped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX SWIPED!!! Velocity=" + e.VelocityX + "," + e.VelocityY + "][" + e.Center + "][" + e.ViewPosition + "]");
boxListener.Pinched += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX PINCHED TotalScale=[" + e.TotalScale + "][" + e.Center + "][" + e.ViewPosition + "]");
boxListener.Rotated += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX ROTATED TotalAngle[" + e.TotalAngle + "][" + e.Center + "][" + e.ViewPosition + "]");
#endregion
#region Looking for multiple taps
var tapBox = new BoxView
{
BackgroundColor = Color.Blue,
};
var tapBoxListener = FormsGestures.Listener.For(tapBox);
tapBoxListener.Tapping += (sender, e) => System.Diagnostics.Debug.WriteLine("\tTAPBOX TAPPING #[" + e.NumberOfTaps + "]");
tapBoxListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tTAPBOX TAPPED #[" + e.NumberOfTaps + "]");
tapBoxListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tTAPBOX DOUBLE TAPPED #[" + e.NumberOfTaps + "]");
#endregion
#region RelativeLayout
relativeLayout = new Xamarin.Forms.RelativeLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(0),
BackgroundColor = Color.Transparent,
};
relativeLayout.Children.Clear();
relativeLayout.Children.Add(button,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width * 3 / 4); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height * 3 / 4); }),
widthConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 3); }),
heightConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 3); })
);
relativeLayout.Children.Add(box,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width / 4); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height / 4); }),
widthConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 2); }),
heightConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 2); })
);
relativeLayout.Children.Add(tapBox,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width / 8); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height / 8); }),
widthConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 16); }),
heightConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 16); })
);
relativeLayout.Children.Add(frame,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width * 1 / 4); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height / 8); })
);
#endregion
#region AbsoluteLayout
absoluteLayout = new Xamarin.Forms.AbsoluteLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
// Padding = new Thickness(5, Device.OnPlatform(20, 0, 0), 5, 5),
Padding = new Thickness(5, 5, 5, 5), // given tool bar don't need upper padding
BackgroundColor = Color.White
};
absoluteLayout.Children.Add(relativeLayout,
new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All
);
#endregion
Content = absoluteLayout;
}
public PanGesturePage()
{
var button = new Button {
BackgroundColor = Color.Pink,
Text = "Hello",
BorderColor = Color.Blue,
BorderWidth = 3,
};
button.Clicked += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON CLICKED!!!!");
var buttonListener = FormsGestures.Listener.For(button);
buttonListener.Down += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON DOWN [" + e.Touches[0] + "]"); // does not work with UIControl derived elements
buttonListener.LongPressing += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON LONG PRESSING [" + e.Touches[0] + "]");
buttonListener.Panning += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBUTTON PANNING [" + e.Touches[0] + "]");
button.TranslationX += e.DeltaDistance.X;
button.TranslationY += e.DeltaDistance.Y;
};
buttonListener.Pinching += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBUTTON PINCHING [" + e.Touches[0] + "]");
button.Scale *= e.DeltaScale;
};
buttonListener.Rotating += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBUTTON ROTATING [" + e.Touches[0] + "]");
button.Rotation += e.DeltaAngle;
};
buttonListener.Up += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON UP [" + e.Touches[0] + "]"); // does not work with UIControl derived elements
buttonListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON TAPPED [" + e.Touches[0] + "]"); // does not work with UIControl derived elements
buttonListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON DOUBLE TAPPED [" + e.Touches[0] + "]"); // does not work with UIControl derived elements
buttonListener.LongPressed += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON LONG PRESSED [" + e.Touches[0] + "]");
buttonListener.Panned += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON PANNED TotalDistance=[" + e.TotalDistance + "]");
buttonListener.Swiped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON SWIPED!!! Velocity=[" + e.VelocityX + "," + e.VelocityY + "]");
buttonListener.Pinched += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON PINCHED TotalScale=[" + e.TotalScale + "]");
buttonListener.Rotated += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBUTTON ROTATED TotalAngle=[" + e.TotalAngle + "]");
var box = new BoxView {
BackgroundColor = Color.Green,
};
var boxListener = FormsGestures.Listener.For(box);
//boxListener.Down += OnDown;
boxListener.Down += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX DOWN [" + e.Touches[0] + "]");
boxListener.LongPressing += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX LONG PRESSING [" + e.Touches[0] + "]");
boxListener.Panning += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBOX PANNING [" + e.Touches[0] + "]");
box.TranslationX += e.DeltaDistance.X;
box.TranslationY += e.DeltaDistance.Y;
};
boxListener.Pinching += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBOX PINCHING [" + e.Touches[0] + "][" + e.DeltaScale + "]");
box.Scale *= e.DeltaScale;
};
boxListener.Rotating += (sender, e) => {
System.Diagnostics.Debug.WriteLine("\tBOX ROTATING [" + e.Touches[0] + "][" + e.DeltaAngle + "]");
box.Rotation += e.DeltaAngle;
};
boxListener.Up += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX UP [" + e.Touches[0] + "]");
boxListener.Tapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX TAPPED [" + e.Touches[0] + "]");
boxListener.DoubleTapped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX DOUBLE TAPPED [" + e.Touches[0] + "]");
boxListener.LongPressed += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX LONG PRESSED [" + e.Touches[0] + "]");
boxListener.Panned += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX PANNED TotalDistance=[" + e.TotalDistance + "]");
boxListener.Swiped += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX SWIPED!!! Velocity=" + e.VelocityX + "," + e.VelocityY + "]");
boxListener.Pinched += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX PINCHED TotalScale=[" + e.TotalScale + "]");
boxListener.Rotated += (sender, e) => System.Diagnostics.Debug.WriteLine("\tBOX ROTATED TotalAngle[" + e.TotalAngle + "]");
relativeLayout = new Xamarin.Forms.RelativeLayout {
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(0),
BackgroundColor = Color.Transparent,
};
relativeLayout.Children.Clear();
relativeLayout.Children.Add(button,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width / 2); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height / 2); }),
widthConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 8); }),
heightConstraint: Constraint.RelativeToParent((parent) => { return(parent.Height / 10); })
);
relativeLayout.Children.Add(box,
xConstraint: Constraint.RelativeToParent((parent) => { return(parent.X + parent.Width / 4); }),
yConstraint: Constraint.RelativeToParent((parent) => { return(parent.Y + parent.Height / 4); }),
widthConstraint: Constraint.RelativeToParent((parent) => { return(parent.Width / 3); }),
heightConstraint: Constraint.RelativeToParent((parent) => { return(parent.Height / 4); })
);
absoluteLayout = new Xamarin.Forms.AbsoluteLayout {
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
// Padding = new Thickness(5, Device.OnPlatform(20, 0, 0), 5, 5),
Padding = new Thickness(5, 5, 5, 5), // given tool bar don't need upper padding
BackgroundColor = Color.White
};
absoluteLayout.Children.Add(relativeLayout,
new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All
);
Content = absoluteLayout;
}
internal double Compute(RelativeLayout parent)
{
return(_measureFunc(parent));
}
