private void TouchUp(object sender, TouchEventArgs e)
{
if (!Game.Input.IsMouseButtonReleased(MouseButton.Left))
{
return;
}
isInProgress = false;
Controller.ChangeCursor(null);
e.Handled = true;
// dragging state
if (isDragging)
{
isDragging = false;
if (dragAdorner != null)
{
// Create a collection with all properties that might have changed
var changes = new Dictionary <string, object>
{
{ nameof(UIElement.Margin), dragAdorner.GameSideElement.Margin },
{ nameof(UIElement.Width), dragAdorner.GameSideElement.Width },
{ nameof(UIElement.HorizontalAlignment), dragAdorner.GameSideElement.HorizontalAlignment },
{ nameof(UIElement.Height), dragAdorner.GameSideElement.Height },
{ nameof(UIElement.VerticalAlignment), dragAdorner.GameSideElement.VerticalAlignment },
//{ nameof(UIElement.Depth), dragAdorner.GameSideElement.Depth },
//{ nameof(UIElement.DepthAlignment), dragAdorner.GameSideElement.DepthAlignment },
};
// Propagate the changes to the asset
ApplyChanges(dragAdorner.GameSideElement.Id, changes);
dragAdorner.OnResizingCompleted();
}
dragAdorner = null;
return;
}
// other states
var editor = Controller.Editor;
var worldPosition = e.WorldPosition;
// Get the id of the game-side element that is under the pointer position
Guid elementId;
if (!TryGetElementIdAtPosition(ref worldPosition, out elementId))
{
// Nothing, clear the selection
editor.Dispatcher.InvokeAsync(() => editor.ClearSelection());
return;
}
// Select the corresponding asset-side UIElement, if pointer did not move between down and up events
var delta = (e.ScreenPosition - originScreenPosition) * new Vector2(Game.GraphicsDevice.Presenter.BackBuffer.Width, Game.GraphicsDevice.Presenter.BackBuffer.Height);
if (Math.Abs(delta.X) < System.Windows.SystemParameters.MinimumHorizontalDragDistance && Math.Abs(delta.Y) < System.Windows.SystemParameters.MinimumVerticalDragDistance)
{
var additiveSelection = Game.Input.IsKeyDown(Keys.LeftCtrl) || Game.Input.IsKeyDown(Keys.RightCtrl);
editor.Dispatcher.InvokeAsync(() => editor.Select(elementId, additiveSelection)).Forget();
}
}
private void PreviewTouchDown(object sender, TouchEventArgs e)
{
if (!Game.Input.IsMouseButtonDown(MouseButton.Left))
{
return;
}
// Save the current pointer position
originWorldPosition = currentPosition = e.WorldPosition;
originScreenPosition = e.ScreenPosition;
// No prior selection (selection is done on TouchUp)
if (selectedAdorners.Count == 0)
{
return;
}
// Get the resizing adorners that are under the pointer position
var resizingAdorners = (
from hit in GetAdornerVisualsAtPosition(ref originWorldPosition)
// only on currently selected elements (retrieve associated game-side element id from hit visual)
join s in selectedAdorners on hit.Element.DependencyProperties.Get(AssociatedElementIdPropertyKey) equals s
// order by closest to screen (z goes negatively)
orderby hit.IntersectionPoint.Z
// retrieve resizing adorners (MoveAdorner or SizingAdorner), if any
let r = GetAssociatedAdorner(hit.Element) as IResizingAdorner
where r != null
select r).ToList();
if (resizingAdorners.Count == 0)
{
return;
}
if (resizingAdorners.Count == 1 && selectedAdorners.Count == 1)
{
// If ALT is pressed, we are starting a drag/drop to the outside of the UI editor
if (Game.Input.IsKeyDown(Keys.LeftAlt) || Game.Input.IsKeyDown(Keys.RightAlt))
{
e.Handled = true;
Controller.DoDragDrop(resizingAdorners[0].GameSideElement.Id);
return;
}
}
// start drag
dragAdorner = resizingAdorners[0]; // hit results have been order by Z already
isInProgress = true;
}
