public void OnMouseDown(Point mousePosition, EditorOperationHitTest hitTest, IEditorOperationalContext context)
{
if (hitTest.ResizeHandle == null || element == null)
{
// Not resizing
element = null;
return;
}
Log.LogInformation($"Starting resize on {hitTest.ResizeHandle.Value} handle");
initialMousePosition = mousePosition;
initialLocation = element.Layout.Location;
initialSize = element.Layout.Size;
mode = hitTest.ResizeHandle.Value;
isResizing = true;
}
protected void SizeComponent(PositionalComponent component, Primitives.Point start, Primitives.Point end, double gridSize)
{
// reverse points if necessary
Primitives.Point newStart = start;
Primitives.Point newEnd = end;
bool switched = false;
if (start.X < end.X)
{
newStart = end;
newEnd = start;
switched = true;
}
if (true) // snap to grid
{
if (Math.IEEERemainder(newStart.X, 20d) != 0)
{
newStart = newStart.WithNewX(newStart.SnapToGrid(gridSize).X);
}
if (Math.IEEERemainder(newStart.Y, 20d) != 0)
{
newStart = newStart.WithNewY(newStart.SnapToGrid(gridSize).Y);
}
if (Math.IEEERemainder(newEnd.X, 20d) != 0)
{
newEnd = newEnd.WithNewX(newEnd.SnapToGrid(gridSize).X);
}
if (Math.IEEERemainder(newEnd.Y, 20d) != 0)
{
newEnd = newEnd.WithNewY(newEnd.SnapToGrid(gridSize).Y);
}
}
if (true) // snap to horizontal or vertical
{
double height = Math.Max(newStart.Y, newEnd.Y) - Math.Min(newStart.Y, newEnd.Y);
double length = Math.Sqrt(Math.Pow(newEnd.X - newStart.X, 2d) + Math.Pow(newEnd.Y - newStart.Y, 2d));
double bearing = Math.Acos(height / length) * (180 / Math.PI);
if (bearing <= 45 && switched)
{
newStart = newStart.WithNewX(newEnd.X);
}
else if (bearing <= 45 && !switched)
{
newEnd = newEnd.WithNewX(newStart.X);
}
else if (bearing > 45 && switched)
{
newStart = newStart.WithNewY(newEnd.Y);
}
else
{
newEnd = newEnd.WithNewY(newStart.Y);
}
}
if (newStart.X > newEnd.X || newStart.Y > newEnd.Y)
{
component.Layout.Location = new Primitives.Point(newEnd.X, newEnd.Y);
if (newStart.X == newEnd.X)
{
component.Layout.Size = newStart.Y - newEnd.Y;
component.Layout.Orientation = Orientation.Vertical;
}
else
{
component.Layout.Size = newStart.X - newEnd.X;
component.Layout.Orientation = Orientation.Horizontal;
}
}
else
{
component.Layout.Location = new Primitives.Point(newStart.X, newStart.Y);
if (newStart.X == newEnd.X)
{
component.Layout.Size = newEnd.Y - newStart.Y;
component.Layout.Orientation = Orientation.Vertical;
}
else
{
component.Layout.Size = newEnd.X - newStart.X;
component.Layout.Orientation = Orientation.Horizontal;
}
}
var description = descriptionLookup.GetDescription(component.Type);
//FlagOptions flagOptions = ApplyFlags(component);
//if ((flagOptions & FlagOptions.HorizontalOnly) == FlagOptions.HorizontalOnly && component.Layout.Orientation == Orientation.Vertical)
//{
// component.Layout.Orientation = Orientation.Horizontal;
// component.Layout.Size = component.Layout.Description.MinSize;
//}
//else if ((flagOptions & FlagOptions.VerticalOnly) == FlagOptions.VerticalOnly && component.Layout.Orientation == Orientation.Horizontal)
//{
// component.Layout.Orientation = Orientation.Vertical;
// component.Layout.Size = component.Layout.Description.MinSize;
//}
double minAllowedSize = Math.Max(description.MinSize, gridSize);
if (component.Layout.Size < minAllowedSize)
{
component.Layout.Size = minAllowedSize;
}
}