bool RespondsToDragHandle(FPGameObject gameObject, FPDragHandle dragHandle)
{
bool respondsToWidth = gameObject.WidthSegments > 0;
bool respondsToHeight = gameObject.HeightSegments > 0;
if (!respondsToWidth && IsWidthHandle(dragHandle))
return false;
if (!respondsToHeight && IsHeightHandle(dragHandle))
return false;
return true;
}
PointF PointFromHandleAroundRect(FPDragHandle handle, RectangleF rect)
{
switch (handle)
{
case FPDragHandle.TopLeft:
return new PointF(rect.X, rect.Y);
case FPDragHandle.BottomLeft:
return new PointF(rect.X, rect.Y + rect.Height);
case FPDragHandle.TopRight:
return new PointF(rect.X + rect.Width, rect.Y);
case FPDragHandle.BottomRight:
return new PointF(rect.X + rect.Width, rect.Y + rect.Height);
case FPDragHandle.MiddleLeft:
return new PointF(rect.X, rect.Y + rect.Height / 2.0f);
case FPDragHandle.MiddleTop:
return new PointF(rect.X + rect.Width / 2.0f, rect.Y);
case FPDragHandle.MiddleRight:
return new PointF(rect.X + rect.Width, rect.Y + rect.Height / 2.0f);
case FPDragHandle.MiddleBottom:
return new PointF(rect.X + rect.Width / 2.0f, rect.Y + rect.Height);
case FPDragHandle.Center:
return new PointF(rect.X + rect.Width / 2.0f, rect.Y + rect.Height / 2.0f);
default:
return PointF.Empty;
}
}
bool IsWidthHandle(FPDragHandle handle)
{
switch (handle)
{
case FPDragHandle.TopLeft:
case FPDragHandle.BottomLeft:
case FPDragHandle.TopRight:
case FPDragHandle.BottomRight:
case FPDragHandle.MiddleLeft:
case FPDragHandle.MiddleRight:
return true;
case FPDragHandle.MiddleTop:
case FPDragHandle.MiddleBottom:
case FPDragHandle.Center:
case FPDragHandle.None:
default:
return false;
}
}
private void levelView_MouseMoved(object sender, MouseEventArgs e)
{
PointF location = LevelViewLocation(e);
currentHandle = FPDragHandle.None;
const float handleSize = 14.0f;
RectangleF handleRect = new RectangleF(0.0f, 0.0f, handleSize, handleSize);
if (selectedIndices.Count == 1)
{
var draggedObject = DraggedObject;
for (FPDragHandle handle = FPDragHandle.TopLeft; handle < FPDragHandle.Center; handle++)
{
if (!RespondsToDragHandle(draggedObject, handle))
continue;
PointF handlePoint = PointFromHandleAroundRect(handle, draggedObject.Rect);
handleRect.X = handlePoint.X - handleRect.Width / 2.0f;
handleRect.Y = handlePoint.Y - handleRect.Height / 2.0f;
if (handleRect.Contains(location))
{
currentHandle = handle;
beginMovePoint = endMovePoint = location;
break;
}
}
if (currentHandle == FPDragHandle.None)
{
if (draggedObject.Rect.Contains(location))
{
currentHandle = FPDragHandle.Center;
beginMovePoint = endMovePoint = location;
}
}
}
else
{
foreach (var index in selectedIndices)
{
var gameObject = gameObjects[index];
if (gameObject.Rect.Contains(location))
{
currentHandle = FPDragHandle.Center;
beginMovePoint = endMovePoint = location;
break;
}
}
}
levelView.Invalidate();
}
private void BeginResize(FPDragHandle handle)
{
BeforeAction("Resize Selected");
}
