protected override void OnResizeStart(UIElement element, ResizableBehavior resizableBehavior)
{
base.OnResizeStart(element, resizableBehavior);
var snapSide = ArtboardSnapEngineUtils.GetResizeSide(resizableBehavior.ResizeInfo.HandleKind);
_snapEngineContext = Canvas.Artboard?.SnapEngine?.CreateContext(new ArtboardSnapEngineContextParameters(element, snapSide));
}
public override double GetAxisValue(double sourceAxisValue, ArtboardSnapEngineContext context)
{
var gridLineControl = context.Engine.Artboard?.GridLineControlInternal;
if (gridLineControl == null)
{
return(double.NaN);
}
var gridStep = gridLineControl.Model.GridSize;
return(Calc(sourceAxisValue, gridStep, Axis == ArtboardAxis.X ? gridLineControl.ShowVerticalLines : gridLineControl.ShowHorizontalLines));
}
public override Point GetLocation(Point sourceLocation, ArtboardSnapEngineContext context)
{
var gridLineControl = context.Engine.Artboard?.GridLineControlInternal;
if (gridLineControl == null)
{
return(new Point(double.NaN, double.NaN));
}
var gridStep = gridLineControl.Model.GridSize;
return(new Point(Calc(sourceLocation.X, gridStep, gridLineControl.ShowVerticalLines), Calc(sourceLocation.Y, gridStep, gridLineControl.ShowHorizontalLines)));
}
public ArtboardSnapParameters(Rect rect, ArtboardSnapEngineContext context)
{
Rect = rect;
Context = context;
}
protected override void OnDragStart(UIElement element, DraggableBehavior draggableBehavior)
{
base.OnDragStart(element, draggableBehavior);
_snapEngineContext = Canvas.Artboard?.SnapEngine?.CreateContext(new ArtboardSnapEngineContextParameters(element, ArtboardSnapRectSide.All));
}
protected override void OnDragEnd(UIElement element, DraggableBehavior draggableBehavior)
{
base.OnDragEnd(element, draggableBehavior);
_snapEngineContext = _snapEngineContext.DisposeExchange();
}
protected override void OnResizeEnd(UIElement element, ResizableBehavior resizableBehavior)
{
base.OnResizeEnd(element, resizableBehavior);
_snapEngineContext = _snapEngineContext.DisposeExchange();
}
public abstract Point GetLocation(Point sourceLocation, ArtboardSnapEngineContext context);
