public static IMouseDataSource DragTarget(this IMouseDataSource src, double opacity = 1)
{
if (src.Target is not FrameworkElement target)
{
return(src);
}
src.BindLocalDragger(
LocalDragger.MinimumDrag(new DragUiWindow(target, opacity)));
return(src);
}
public void MouseDownHandler(IMouseClickReport report)
{
Message = $"Clicked ({report.AbsoluteLocation()}) / ({report.RelativeLocation()})";
report
.ExtractSize(out var size)
.DragSource()
.BindLocalDragger(
LocalDragger.MinimumDrag(
LocalDragger.RelativeToSize(size,
LocalDragger.Action(p => Message = $"Drag to {p}"))));
}
public static IMouseDataSource Drag(this IMouseDataSource mon, Func <IDataObject> dataToDrag, DragDropEffects allowedEffects,
Action <DragDropEffects>?onDragDone = null)
{
mon.BindLocalDragger(
LocalDragger.MinimumDrag(
LocalDragger.MaxMoves(1, LocalDragger.Action((_, __) =>
{
var ret = new DragHandler(mon).InitiateDrag(dataToDrag(), allowedEffects);
onDragDone?.Invoke(ret);
}))));
return(mon);
}
public void Abbreviated()
{
var fired = 0;
var ld = LocalDragger.Action(pt =>
{
fired++;
Assert.Equal(new Point(1, 2), pt);
});
Assert.Equal(0, fired);
ld.NewPoint(MouseMessageType.Up, new Point(1, 2));
Assert.Equal(1, fired);
}
public void PassThrough()
{
var fired = 0;
var ld = LocalDragger.Action((mmt, pt) =>
{
fired++;
Assert.Equal(MouseMessageType.Up, mmt);
Assert.Equal(new Point(1, 2), pt);
});
Assert.Equal(0, fired);
ld.NewPoint(MouseMessageType.Up, new Point(1, 2));
Assert.Equal(1, fired);
}