public override void OnTouchMove(GPoint point)
{
if (_isThumbSelected)
{
UpdateValue(point);
}
}
public override void OnTouchUp(GPoint point)
{
if (_isThumbSelected)
{
_isThumbSelected = false;
AnimateMaterialThumbSize(false);
}
}
public override void OnTouchDown(GPoint point)
{
PointF touchPoint = new PointF((float)point.X, (float)point.Y);
if (_indicatorRect.Contains(touchPoint))
{
View.Text = string.Empty;
}
}
public override void OnTouchDown(GPoint point)
{
_isThumbSelected = ThumbRect.Contains(new PointF((float)point.X, (float)point.Y));
if (_isThumbSelected)
{
AnimateMaterialThumbSize(true);
}
UpdateValue(point);
}
public override void OnTouchDown(GPoint point)
{
_minusRippleEffect.ClipRectangle = _minusRect;
_plusRippleEffect.ClipRectangle = _plusRect;
_plusRippleEffect.OnTouchDown(point);
_minusRippleEffect.OnTouchDown(point);
_pressed = true;
}
public override void OnTouchUp(GPoint point)
{
var touchDownPoint = new PointF((float)point.X, (float)point.Y);
if (_minusRect.Contains(touchDownPoint) && _pressed)
{
View.Value -= View.Increment;
}
if (_plusRect.Contains(touchDownPoint) && _pressed)
{
View.Value += View.Increment;
}
_minusRippleEffect.OnTouchUp(point);
_plusRippleEffect.OnTouchUp(point);
_pressed = false;
}
public override void OnTouchDown(GPoint point)
{
var touchDownPoint = new PointF((float)point.X, (float)point.Y);
TouchPoint = touchDownPoint;
}
public static APath ToAPath(this Geometry geometry, Context context)
{
APath path = new APath();
float density = context.Resources.DisplayMetrics.Density;
if (geometry is LineGeometry)
{
LineGeometry lineGeometry = geometry as LineGeometry;
path.MoveTo(
density * (float)lineGeometry.StartPoint.X,
density * (float)lineGeometry.StartPoint.Y);
path.LineTo(
density * (float)lineGeometry.EndPoint.X,
density * (float)lineGeometry.EndPoint.Y);
}
else if (geometry is RectangleGeometry)
{
FormsRectangle rect = (geometry as RectangleGeometry).Rect;
path.AddRect(
density * (float)rect.Left,
density * (float)rect.Top,
density * (float)rect.Right,
density * (float)rect.Bottom,
APath.Direction.Cw);
}
else if (geometry is EllipseGeometry)
{
EllipseGeometry ellipseGeometry = geometry as EllipseGeometry;
path.AddOval(new RectF(
density * (float)(ellipseGeometry.Center.X - ellipseGeometry.RadiusX),
density * (float)(ellipseGeometry.Center.Y - ellipseGeometry.RadiusY),
density * (float)(ellipseGeometry.Center.X + ellipseGeometry.RadiusX),
density * (float)(ellipseGeometry.Center.Y + ellipseGeometry.RadiusY)),
APath.Direction.Cw);
}
else if (geometry is GeometryGroup)
{
GeometryGroup geometryGroup = geometry as GeometryGroup;
path.SetFillType(geometryGroup.FillRule == FillRule.Nonzero ? APath.FillType.Winding : APath.FillType.EvenOdd);
foreach (Geometry child in geometryGroup.Children)
{
APath childPath = child.ToAPath(context);
path.AddPath(childPath);
}
}
else if (geometry is PathGeometry)
{
PathGeometry pathGeometry = geometry as PathGeometry;
path.SetFillType(pathGeometry.FillRule == FillRule.Nonzero ? APath.FillType.Winding : APath.FillType.EvenOdd);
foreach (PathFigure pathFigure in pathGeometry.Figures)
{
path.MoveTo(
density * (float)pathFigure.StartPoint.X,
density * (float)pathFigure.StartPoint.Y);
Point lastPoint = pathFigure.StartPoint;
foreach (PathSegment pathSegment in pathFigure.Segments)
{
// LineSegment
if (pathSegment is LineSegment)
{
LineSegment lineSegment = pathSegment as LineSegment;
path.LineTo(
density * (float)lineSegment.Point.X,
density * (float)lineSegment.Point.Y);
lastPoint = lineSegment.Point;
}
// PolylineSegment
else if (pathSegment is PolyLineSegment)
{
PolyLineSegment polylineSegment = pathSegment as PolyLineSegment;
PointCollection points = polylineSegment.Points;
for (int i = 0; i < points.Count; i++)
{
path.LineTo(
density * (float)points[i].X,
density * (float)points[i].Y);
}
lastPoint = points[points.Count - 1];
}
// BezierSegment
else if (pathSegment is BezierSegment)
{
BezierSegment bezierSegment = pathSegment as BezierSegment;
path.CubicTo(
density * (float)bezierSegment.Point1.X, density * (float)bezierSegment.Point1.Y,
density * (float)bezierSegment.Point2.X, density * (float)bezierSegment.Point2.Y,
density * (float)bezierSegment.Point3.X, density * (float)bezierSegment.Point3.Y);
lastPoint = bezierSegment.Point3;
}
// PolyBezierSegment
else if (pathSegment is PolyBezierSegment)
{
PolyBezierSegment polyBezierSegment = pathSegment as PolyBezierSegment;
PointCollection points = polyBezierSegment.Points;
if (points.Count >= 3)
{
for (int i = 0; i < points.Count; i += 3)
{
path.CubicTo(
density * (float)points[i + 0].X, density * (float)points[i + 0].Y,
density * (float)points[i + 1].X, density * (float)points[i + 1].Y,
density * (float)points[i + 2].X, density * (float)points[i + 2].Y);
}
}
lastPoint = points[points.Count - 1];
}
// QuadraticBezierSegment
else if (pathSegment is QuadraticBezierSegment)
{
QuadraticBezierSegment bezierSegment = pathSegment as QuadraticBezierSegment;
path.QuadTo(
density * (float)bezierSegment.Point1.X, density * (float)bezierSegment.Point1.Y,
density * (float)bezierSegment.Point2.X, density * (float)bezierSegment.Point2.Y);
lastPoint = bezierSegment.Point2;
}
// PolyQuadraticBezierSegment
else if (pathSegment is PolyQuadraticBezierSegment)
{
PolyQuadraticBezierSegment polyBezierSegment = pathSegment as PolyQuadraticBezierSegment;
PointCollection points = polyBezierSegment.Points;
if (points.Count >= 2)
{
for (int i = 0; i < points.Count; i += 2)
{
path.QuadTo(
density * (float)points[i + 0].X, density * (float)points[i + 0].Y,
density * (float)points[i + 1].X, density * (float)points[i + 1].Y);
}
}
lastPoint = points[points.Count - 1];
}
// ArcSegment
else if (pathSegment is ArcSegment)
{
ArcSegment arcSegment = pathSegment as ArcSegment;
List <Point> points = new List <Point>();
GeometryHelper.FlattenArc(
points,
lastPoint,
arcSegment.Point,
arcSegment.Size.Width,
arcSegment.Size.Height,
arcSegment.RotationAngle,
arcSegment.IsLargeArc,
arcSegment.SweepDirection == SweepDirection.CounterClockwise,
1);
for (int i = 0; i < points.Count; i++)
{
path.LineTo(
density * (float)points[i].X,
density * (float)points[i].Y);
}
if (points.Count > 0)
{
lastPoint = points[points.Count - 1];
}
}
}
if (pathFigure.IsClosed)
{
path.Close();
}
}
}
return(path);
}
public virtual void OnTouchMove(GPoint point)
{
}
public virtual void OnTouchUp(GPoint point)
{
}
public virtual void OnTouchDown(GPoint point)
{
}
void UpdateValue(GPoint point)
{
ValueRate = (point.X - TrackRect.X) / TrackRect.Width;
SendInvalidated();
}
public override void OnTouchDown(GPoint point)
{
_rippleEffect.ClipRectangle = _backgroundRect;
_rippleEffect.OnTouchDown(point);
}
public override void OnTouchUp(GPoint point)
{
if (ClipRectangle == RectF.Zero || ClipRectangle.Contains(TouchPoint))
AnimateDrawRipple();
}
public override void OnTouchDown(GPoint point)
{
View.IsToggled = !View.IsToggled;
AnimateMaterialSwitchThumb(View.IsToggled);
}
public override void OnTouchMove(GPoint point)
{
_pressed = false;
}
public override void OnTouchUp(GPoint point)
{
_rippleEffect.OnTouchUp(point);
}
async void OnScrollToRequested(object sender, ScrollToRequestedEventArgs e)
{
_checkedForRtlScroll = true;
if (!_isAttached)
{
return;
}
// 99.99% of the time simply queuing to the end of the execution queue should handle this case.
// However it is possible to end a layout cycle and STILL be layout requested. We want to
// back off until all are done, even if they trigger layout storms over and over. So we back off
// for 10ms tops then move on.
var cycle = 0;
while (IsLayoutRequested)
{
await Task.Delay(TimeSpan.FromMilliseconds(1));
if (_disposed)
{
return;
}
cycle++;
if (cycle >= 10)
{
break;
}
}
var context = Context;
var x = (int)context.ToPixels(e.ScrollX);
var y = (int)context.ToPixels(e.ScrollY);
int currentX = _view.Orientation == ScrollOrientation.Horizontal || _view.Orientation == ScrollOrientation.Both ? _hScrollView.ScrollX : ScrollX;
int currentY = _view.Orientation == ScrollOrientation.Vertical || _view.Orientation == ScrollOrientation.Both ? ScrollY : _hScrollView.ScrollY;
if (e.Mode == ScrollToMode.Element)
{
Point itemPosition = Controller.GetScrollPositionForElement(e.Element as VisualElement, e.Position);
x = (int)context.ToPixels(itemPosition.X);
y = (int)context.ToPixels(itemPosition.Y);
}
if (e.ShouldAnimate)
{
ValueAnimator animator = ValueAnimator.OfFloat(0f, 1f);
animator.SetDuration(1000);
animator.Update += (o, animatorUpdateEventArgs) =>
{
var v = (double)animatorUpdateEventArgs.Animation.AnimatedValue;
int distX = GetDistance(currentX, x, v);
int distY = GetDistance(currentY, y, v);
if (_view == null)
{
// This is probably happening because the page with this Scroll View
// was popped off the stack during animation
animator.Cancel();
return;
}
switch (_view.Orientation)
{
case ScrollOrientation.Horizontal:
_hScrollView.ScrollTo(distX, distY);
break;
case ScrollOrientation.Vertical:
ScrollTo(distX, distY);
break;
default:
_hScrollView.ScrollTo(distX, distY);
ScrollTo(distX, distY);
break;
}
};
animator.AnimationEnd += delegate
{
if (Controller == null)
{
return;
}
Controller.SendScrollFinished();
};
animator.Start();
}
else
{
switch (_view.Orientation)
{
case ScrollOrientation.Horizontal:
_hScrollView.ScrollTo(x, y);
break;
case ScrollOrientation.Vertical:
ScrollTo(x, y);
break;
default:
_hScrollView.ScrollTo(x, y);
ScrollTo(x, y);
break;
}
Controller.SendScrollFinished();
}
}
public override void OnTouchDown(GPoint point)
{
View.IsChecked = !View.IsChecked;
}
