public static Rect GetElementRect(Windows.UI.Xaml.FrameworkElement element)
{
Windows.UI.Xaml.Media.GeneralTransform transform = element.TransformToVisual(null);
Point point = transform.TransformPoint(new Point());
return(new Rect(point, new Size(element.ActualWidth, element.ActualHeight)));
}
public static bool IsItemVisible(this FrameworkElement container, FrameworkElement element)
{
var elementBounds = element.TransformToVisual(container).TransformBounds(new Rect(0, 0, element.ActualWidth, element.ActualHeight));
var containerBounds = new Rect(0, 0, container.ActualWidth, container.ActualHeight);
return (elementBounds.Top < containerBounds.Bottom && elementBounds.Bottom > containerBounds.Top);
}
private Point GetPosition(FrameworkElement sender)
{
GeneralTransform transform = sender.TransformToVisual(null);
Point location = transform.TransformPoint(new Point());
location.Y = location.Y + sender.ActualHeight;
return location;
}
private Rect GetElementBounds(FrameworkElement element, FrameworkElement parent)
{
if (element == null || parent == null)
{
return Rect.Empty;
}
if (element.Visibility != Visibility.Visible)
{
return Rect.Empty;
}
return element.TransformToVisual(parent).TransformBounds(new Rect(0.0, 0.0, element.ActualWidth, element.ActualHeight));
}
//get the bounding rect of an element relative to 0,0
private static Rect GetElementRect(FrameworkElement element)
{
//get the element point to open the window at the correct point
GeneralTransform transform = element.TransformToVisual(null);
Point point = transform.TransformPoint(new Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
private Rect GetElementRect(FrameworkElement frameworkElement)
{
Windows.UI.Xaml.Media.GeneralTransform transform = frameworkElement.TransformToVisual(null);
Point point = transform.TransformPoint(new Point());
return new Rect(point, new Size(frameworkElement.ActualWidth, frameworkElement.ActualHeight));
}
internal void ScrollIntoView(FrameworkElement element)
{
var scrollHost = ScrollHost;
if (scrollHost == null)
{
return;
}
GeneralTransform transform;
try
{
transform = element.TransformToVisual(scrollHost);
}
catch (ArgumentException)
{
return;
}
var itemRect = new Rect(transform.TransformPoint(new Point()),
transform.TransformPoint(new Point(element.ActualWidth, element.ActualHeight)));
var verticalOffset = scrollHost.VerticalOffset;
double verticalDelta = 0;
var hostBottom = scrollHost.ViewportHeight;
var itemBottom = itemRect.Bottom;
if (hostBottom < itemBottom)
{
verticalDelta = itemBottom - hostBottom;
verticalOffset += verticalDelta;
}
var itemTop = itemRect.Top;
if (itemTop - verticalDelta < 0)
{
verticalOffset -= verticalDelta - itemTop;
}
var horizontalOffset = scrollHost.HorizontalOffset;
double horizontalDelta = 0;
var hostRight = scrollHost.ViewportWidth;
var itemRight = itemRect.Right;
if (hostRight < itemRight)
{
horizontalDelta = itemRight - hostRight;
horizontalOffset += horizontalDelta;
}
var itemLeft = itemRect.Left;
if (itemLeft - horizontalDelta < 0)
{
horizontalOffset -= horizontalDelta - itemLeft;
}
scrollHost.ChangeView(horizontalOffset, verticalOffset, null);
}
/// <summary>
/// Start animations and re-parent to destination UI Elmenent to finish the operations
/// </summary>
/// <param name="destinationElement">Destination UIElement where Visual should show up after page has loaded</param>
/// <param name="containerVisual">ContainerVisual that contains Visual which needs to show in UIElement</param>
/// <param name="newContainerVisual">ContainerVisual after visual is parented to UIElement</param>
public static void InitiateContinuity(FrameworkElement destinationElement, ContainerVisual containerVisual, out ContainerVisual newContainerVisual)
{
if (null == containerVisual || null == destinationElement)
{
newContainerVisual = null;
return;
}
//Get the frame of Window
Frame rootFrame = Window.Current.Content as Frame;
Visual rootVisual = ElementCompositionPreview.GetElementVisual(rootFrame);
Compositor compositor = rootVisual.Compositor;
//Create Temporary Container. this will be added to final UIElement
ContainerVisual _TempContainer = compositor.CreateContainerVisual();
// Get Sprite Visual from incoming container
var spriteHeroImage = containerVisual.Children.FirstOrDefault();
//Create animation scoped batch to track animation completion and to complete re-parenting
CompositionScopedBatch scopeBatch = compositor.CreateScopedBatch(CompositionBatchTypes.Animation);
//Get coordinates of UIElement in reference to root so that it can be used for animations final value
var coordinate = destinationElement.TransformToVisual(rootFrame);
var position = coordinate.TransformPoint(new Point(0, 0));
//Create offset animation to make visual move on screen
Vector3KeyFrameAnimation offsetAnimation = compositor.CreateVector3KeyFrameAnimation();
offsetAnimation.InsertKeyFrame(1f, new System.Numerics.Vector3((float)position.X, (float)position.Y, 0));
offsetAnimation.Duration = TimeSpan.FromMilliseconds(600);
//Create size animation to change size of the visuals
Vector2KeyFrameAnimation sizeAnimation = compositor.CreateVector2KeyFrameAnimation();
sizeAnimation.InsertKeyFrame(1f, new System.Numerics.Vector2((float)destinationElement.ActualWidth, (float)destinationElement.ActualHeight));
sizeAnimation.Duration = TimeSpan.FromMilliseconds(600);
//Start Animations
spriteHeroImage.StartAnimation("size", sizeAnimation);
containerVisual.StartAnimation("offset", offsetAnimation);
//Scoped batch completed event.
scopeBatch.Completed += (o, e) =>
{
//Re-parent SpriteVisual to temp container and add temp container to UIElement as animations are finished.
spriteHeroImage.Offset = new System.Numerics.Vector3(0, 0, 0);
containerVisual.Children.Remove(spriteHeroImage);
_TempContainer.Children.InsertAtTop(spriteHeroImage);
ElementCompositionPreview.SetElementChildVisual(destinationElement, _TempContainer);
containerVisual = null;
};
newContainerVisual = _TempContainer;
scopeBatch.End();
}
private Windows.Foundation.Rect GetElementRect(FrameworkElement element)
{
Windows.UI.Xaml.Media.GeneralTransform buttonTransform = element.TransformToVisual(null);
Windows.Foundation.Point point = buttonTransform.TransformPoint(new Windows.Foundation.Point());
return new Windows.Foundation.Rect(point, new Windows.Foundation.Size(element.ActualWidth, element.ActualHeight));
}
private Rect GetElementRect(FrameworkElement element)
{
var elementTransform = element.TransformToVisual(null);
var point = elementTransform.TransformPoint(new Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
public static Rect GetContainerRectangle([NotNull] this FrameworkElement element)
{
return(element.TransformToVisual(Window.Current.Content).TransformBounds(LayoutInformation.GetLayoutSlot(element)));
}
private Point[] GetTransformedPoints(FrameworkElement element, bool isRTL, FrameworkElement relativeTo)
{
Point[] pointArray = new Point[4];
if ((element != null) && (relativeTo != null))
{
GeneralTransform gt = relativeTo.TransformToVisual(_rootVisual);
pointArray[0] = gt.TransformPoint(new Point(0.0, 0.0));
pointArray[1] = gt.TransformPoint(new Point(element.ActualWidth, 0.0));
pointArray[2] = gt.TransformPoint(new Point(0.0, element.ActualHeight));
pointArray[3] = gt.TransformPoint(new Point(element.ActualWidth, element.ActualHeight));
FrameworkElement _el = _rootVisual as FrameworkElement;
bool flag = (_el != null) ? (_el.FlowDirection == FlowDirection.RightToLeft) : false;
if (isRTL != flag)
{
// TODO: Handle RTL - GetTransformedPoints
//for (int i = 0; i < pointArray.Length; i++)
//{
// pointArray[i].X = _windowBounds.Width - pointArray[i].X;
//}
}
}
return pointArray;
}
internal void ScrollIntoView(FrameworkElement element)
{
// Get the ScrollHost
ScrollViewer scrollHost = ScrollHost;
if (scrollHost == null)
{
return;
}
// Get the position of the element relative to the ScrollHost
GeneralTransform transform = null;
try
{
transform = element.TransformToVisual(scrollHost);
}
catch (ArgumentException)
{
// Ignore failures when not in the visual tree
return;
}
Rect itemRect = new Rect(
transform.TransformPoint(new Point()),
transform.TransformPoint(new Point(element.ActualWidth, element.ActualHeight)));
// Scroll vertically
double verticalOffset = scrollHost.VerticalOffset;
double verticalDelta = 0;
double hostBottom = scrollHost.ViewportHeight;
double itemBottom = itemRect.Bottom;
if (hostBottom < itemBottom)
{
verticalDelta = itemBottom - hostBottom;
verticalOffset += verticalDelta;
}
double itemTop = itemRect.Top;
if (itemTop - verticalDelta < 0)
{
verticalOffset -= verticalDelta - itemTop;
}
#pragma warning disable 4014
scrollHost.ScrollToVerticalOffsetWithAnimationAsync(verticalOffset);
#pragma warning restore 4014
// Scroll horizontally
double horizontalOffset = scrollHost.HorizontalOffset;
double horizontalDelta = 0;
double hostRight = scrollHost.ViewportWidth;
double itemRight = itemRect.Right;
if (hostRight < itemRight)
{
horizontalDelta = itemRight - hostRight;
horizontalOffset += horizontalDelta;
}
double itemLeft = itemRect.Left;
if (itemLeft - horizontalDelta < 0)
{
horizontalOffset -= horizontalDelta - itemLeft;
}
#pragma warning disable 4014
scrollHost.ScrollToHorizontalOffsetWithAnimationAsync(horizontalOffset);
#pragma warning restore 4014
}
public static Rect GetElementRect(FrameworkElement element)
{
GeneralTransform buttonTransform = element.TransformToVisual(null);
Windows.Foundation.Point point = buttonTransform.TransformPoint(new Windows.Foundation.Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
public static Rect GetElementRect(FrameworkElement element)
{
Windows.UI.Xaml.Media.GeneralTransform buttonTransform = element.TransformToVisual(null);
Point point = buttonTransform.TransformPoint(new Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
/// <summary>
/// Determine whether an element is visible, assuming the container is visible.
/// </summary>
/// <param name="element"></param>
/// <param name="container"></param>
/// <returns></returns>
private Boolean IsUserVisible(FrameworkElement element, FrameworkElement container)
{
if (element == null)
return false;
Rect elementBounds = element.TransformToVisual(container)
.TransformBounds(new Rect(0.0, 0.0, element.ActualWidth, element.ActualHeight));
Rect containerBounds = new Rect(0.0, 0.0, container.ActualWidth, container.ActualHeight);
return (elementBounds.Top < containerBounds.Bottom && elementBounds.Bottom > containerBounds.Top)
&& (elementBounds.Left < containerBounds.Right && elementBounds.Right > containerBounds.Left);
}
/// <summary>
/// Translates an element to another element's position
/// </summary>
/// <param name="element">Element to translate</param>
/// <param name="target">Target element</param>
/// <param name="durationInSeconds">Duration in seconds</param>
/// <param name="OnComplete">[Optional] Action to perform on complete</param>
/// <returns>Storyboard created</returns>
public async static Task<Storyboard> BeginTranslationToElementAsync(this FrameworkElement element,
FrameworkElement target, double durationInSeconds, Action OnComplete = null)
{
ValidateForNull(element);
ValidateCompositeTransform(element);
Point point = target.TransformToVisual(element).TransformPoint(new Point(0, 0));
CompositeTransform ct = element.RenderTransform as CompositeTransform;
return await TranslateToAsync(element, point.X + ct.TranslateX,
point.Y + ct.TranslateY, durationInSeconds, OnComplete);
}
public static Rect GetElementRect(FrameworkElement element)
{
var buttonTransform = element.TransformToVisual(null);
var point = buttonTransform.TransformPoint(new Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
private Point GetPosition(FrameworkElement element)
{
return element.TransformToVisual(this.listBox).TransformPoint(new Point(0, 0));
}
/// <summary>
/// Computes the delta between the centre of an element and its
/// container.
/// </summary>
/// <param name="element">The element to compare.</param>
/// <param name="container">The element to compare against.</param>
/// <returns>A point that represents the delta between the two centers.</returns>
private static Point GetCenterToCenterDelta(FrameworkElement element, FrameworkElement container)
{
Point elementCenter = new Point(element.ActualWidth / 2, element.ActualHeight / 2);
Point containerCenter = new Point(container.ActualWidth / 2, container.ActualHeight / 2);
Point transformedElementCenter = element.TransformToVisual(container).TransformPoint(elementCenter);
return new Point(containerCenter.X - transformedElementCenter.X, containerCenter.Y - transformedElementCenter.Y);
}
private Rect GetElementRect(FrameworkElement element)
{
GeneralTransform buttonTransform = element.TransformToVisual(null);
Point point = buttonTransform.TransformPoint(new Point());
return new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
}
/// <summary>
// The Open With dialog should be displayed just under the element that triggered it.
/// </summary>
private Windows.Foundation.Point GetOpenWithPosition(FrameworkElement element)
{
Windows.UI.Xaml.Media.GeneralTransform buttonTransform = element.TransformToVisual(null);
Point desiredLocation = buttonTransform.TransformPoint(new Point());
desiredLocation.Y = desiredLocation.Y + element.ActualHeight;
return desiredLocation;
}
private void BuildPopup(FrameworkElement source)
{
var windowBounds = Window.Current.Bounds;
var rootVisual = Window.Current.Content;
GeneralTransform gt = source.TransformToVisual(rootVisual);
var absolutePosition = gt.TransformPoint(new Point(0, 0));
var content = (FrameworkElement)_popup.Child;
content.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
var contentWidth = double.IsNaN(content.Width) ? content.DesiredSize.Width : content.Width;
var contentHeight = double.IsNaN(content.Height) ? content.DesiredSize.Height : content.Height;
double vOffset = 0;
double hOffset = 0;
double vOffsetAnim = 0;
double hOffsetAnim = 0;
switch (PopupPlacement)
{
case Placement.Above:
vOffset = absolutePosition.Y - contentHeight - 10;
hOffset = (absolutePosition.X) + source.ActualWidth / 2 - contentWidth / 2;
vOffsetAnim = 20;
break;
case Placement.Below:
vOffset = absolutePosition.Y + source.ActualHeight + 10;
hOffset = (absolutePosition.X) + source.ActualWidth / 2 - contentWidth / 2;
vOffsetAnim = -20;
break;
case Placement.Default:
case Placement.Left:
vOffset = absolutePosition.Y - contentHeight / 2 + source.ActualHeight / 2;
hOffset = (absolutePosition.X) - 10 - contentWidth;
hOffsetAnim = 20;
break;
case Placement.Right:
vOffset = absolutePosition.Y - contentHeight / 2 + source.ActualHeight / 2;
hOffset = (absolutePosition.X) + 10 + source.ActualWidth;
hOffsetAnim = -20;
break;
default:
throw new ArgumentOutOfRangeException();
}
//Limite position to windows bound
vOffset = Math.Max(10, Math.Min(vOffset, windowBounds.Height - contentHeight - 10));
hOffset = Math.Max(10, Math.Min(hOffset, windowBounds.Width - contentWidth - 10));
_popup.VerticalOffset = vOffset;
_popup.HorizontalOffset = hOffset;
if (UseAnimation)
{
var transitions = new TransitionCollection();
transitions.Add(new PopupThemeTransition()
{
FromHorizontalOffset = hOffsetAnim,
FromVerticalOffset = vOffsetAnim
});
_popup.ChildTransitions = transitions;
}
}
public static bool IsElementFullVisible(FrameworkElement element, FrameworkElement container)
{
if (element.Visibility == Visibility.Collapsed)
return false;
var elementSize = new Rect(0.0, 0.0, element.ActualWidth, element.ActualHeight);
Rect bounds = element.TransformToVisual(container).TransformBounds(elementSize);
var parentBounds = new Rect(0.0, 0.0, container.ActualWidth, container.ActualHeight);
return parentBounds.Contains(new Point(bounds.Left, bounds.Top)) && parentBounds.Contains(new Point(bounds.Right, bounds.Bottom));
}
private static Rect GetPositionOfElement(FrameworkElement element)
{
if (element == null)
return Rect.Empty;
Windows.UI.Xaml.Media.GeneralTransform buttonTransform = element.TransformToVisual(null);
var point = buttonTransform.TransformPoint(new Point());
var rect = new Rect(point, new Size(element.ActualWidth, element.ActualHeight));
return rect;
}
