/// <summary>
/// Measures a view and sets the output buffer to (x, y, width, height).
/// Measurements are relative to the RootView.
/// </summary>
/// <param name="tag">The view tag.</param>
/// <param name="outputBuffer">The output buffer.</param>
public void Measure(int tag, double[] outputBuffer)
{
DispatcherHelpers.AssertOnDispatcher();
var view = default(Widget);
if (!_tagsToViews.TryGetValue(tag, out view))
{
throw new ArgumentOutOfRangeException(nameof(tag));
}
var viewManager = default(IViewManager);
if (!_tagsToViewManagers.TryGetValue(tag, out viewManager))
{
throw new InvalidOperationException(
Invariant($"Could not find view manager for tag '{tag}."));
}
var rootView = RootViewHelper.GetRootView(view);
if (rootView == null)
{
throw new InvalidOperationException(
Invariant($"Native view '{tag}' is no longer on screen."));
}
// TODO: better way to get relative position?
//var Widget = view.As<Widget>();
//var rootTransform = Widget.TransformToVisual(rootView);
/*
#if WINDOWS_UWP
* var positionInRoot = rootTransform.TransformPoint(new Point(0, 0));
#else
* //var positionInRoot = rootTransform.Transform(new Point(0, 0));
* Point point = new Point(); // adapt to the new encapsulation of ElmSharp
* point.X = 0;
* point.Y = 0;
* var positionInRoot = rootTransform.Transform(point);
#endif
*/
var dimensions = viewManager.GetDimensions(rootView);
//outputBuffer[0] = positionInRoot.X;
//outputBuffer[1] = positionInRoot.Y;
outputBuffer[2] = dimensions.Width;
outputBuffer[3] = dimensions.Height;
}
private void OnPointerExited(object sender, PointerRoutedEventArgs e)
{
var view = (TFrameworkElement)sender;
var hasBoxOnlyParent = RootViewHelper.GetReactViewHierarchy(view)
.Skip(1) // Skip the current view
.Any(v => v.GetPointerEvents() == PointerEvents.BoxOnly);
if (!hasBoxOnlyParent)
{
view.GetReactContext()
.GetNativeModule <UIManagerModule>()
.EventDispatcher
.DispatchEvent(
new PointerEnterExitEvent(TouchEventType.Exited, view.GetTag()));
}
}
/// <summary>
/// Measures a view and sets the output buffer to (x, y, width, height).
/// Measurements are relative to the RootView.
/// </summary>
/// <param name="tag">The view tag.</param>
/// <param name="outputBuffer">The output buffer.</param>
public void Measure(int tag, double[] outputBuffer)
{
DispatcherHelpers.AssertOnDispatcher();
var view = default(DependencyObject);
if (!_tagsToViews.TryGetValue(tag, out view))
{
throw new ArgumentOutOfRangeException(nameof(tag));
}
var viewManager = default(IViewManager);
if (!_tagsToViewManagers.TryGetValue(tag, out viewManager))
{
throw new InvalidOperationException(
Invariant($"Could not find view manager for tag '{tag}."));
}
var rootView = RootViewHelper.GetRootView(view);
if (rootView == null)
{
throw new InvalidOperationException(
Invariant($"Native view '{tag}' is no longer on screen."));
}
// TODO: better way to get relative position?
var uiElement = view.As <UIElement>();
var rootTransform = uiElement.TransformToVisual(rootView);
#if WINDOWS_UWP
var positionInRoot = rootTransform.TransformPoint(new Point(0, 0));
#else
var positionInRoot = rootTransform.Transform(new Point(0, 0));
#endif
var dimensions = viewManager.GetDimensions(uiElement);
outputBuffer[0] = positionInRoot.X;
outputBuffer[1] = positionInRoot.Y;
outputBuffer[2] = dimensions.Width;
outputBuffer[3] = dimensions.Height;
}
