protected override Cursor GetHoverCursor(Point pPoint)
{
Cursor lRet = Cursors.Default;
RectPointIndex lIndex = (RectPointIndex)HitTest(pPoint);
switch (lIndex)
{
case RectPointIndex.eTopLeft:
case RectPointIndex.eBottomRight:
lRet = Cursors.SizeNWSE;
break;
case RectPointIndex.eTopRight:
case RectPointIndex.eBottomLeft:
lRet = Cursors.SizeNESW;
break;
case RectPointIndex.eTopCenter:
case RectPointIndex.eBottomCenter:
lRet = Cursors.SizeNS;
break;
case RectPointIndex.eMidLeft:
case RectPointIndex.eMidRight:
lRet = Cursors.SizeWE;
break;
}
return(lRet);
}
protected override void OnResize(Point pPoint, ref Rectangle pRect)
{
Rectangle lRect = pRect;
Point lLocation = lRect.Location;
Size lSize = lRect.Size;
RectPointIndex lMovingPointIndex = (RectPointIndex)MovingPointIndex;
switch (lMovingPointIndex)
{
case RectPointIndex.eTopLeft:
lLocation = pPoint;
lSize = new Size(lRect.Right - pPoint.X, lRect.Bottom - pPoint.Y);
break;
case RectPointIndex.eTopCenter:
lLocation.Y = pPoint.Y;
lSize.Height = lRect.Bottom - pPoint.Y;
break;
case RectPointIndex.eTopRight:
lLocation.Y = pPoint.Y;
lSize = new Size(pPoint.X - lRect.Left, lRect.Bottom - pPoint.Y);
break;
case RectPointIndex.eMidLeft:
lLocation.X = pPoint.X;
lSize.Width = lRect.Right - pPoint.X;
break;
case RectPointIndex.eMidRight:
lSize.Width = pPoint.X - lRect.Left;
break;
case RectPointIndex.eBottomLeft:
lLocation.X = pPoint.X;
lSize = new Size(lRect.Right - pPoint.X, pPoint.Y - lRect.Top);
break;
case RectPointIndex.eBottomCenter:
lSize.Height = pPoint.Y - lRect.Top;
break;
case RectPointIndex.eBottomRight:
lSize = new Size(pPoint.X - lRect.Left, pPoint.Y - lRect.Top);
break;
}
OnRectify(lSize);
Rectify(lRect, pPoint, ref lLocation, ref lSize, ref lMovingPointIndex);
MovingPointIndex = (int)lMovingPointIndex;
// draw circle/square when Control key is pressing
if (KeyboardHelper.Instance.IsCtrlPressing)
{
int lLen = Math.Min(lSize.Width, lSize.Height);
lSize = new Size(lLen, lLen);
}
pRect = new Rectangle(lLocation, lSize);
}
private void Rectify(Rectangle pRect, Point pPoint, ref Point pLocation, ref Size pSize, ref RectPointIndex pIndex)
{
VIndex lVIndex;
HIndex lHIndex;
GetIndex((byte)pIndex, out lVIndex, out lHIndex);
if (pSize.Height < 0)
{
pLocation.Y = lVIndex == VIndex.eTop ? pRect.Bottom : pPoint.Y;
lVIndex = (lVIndex == VIndex.eTop) ? VIndex.eBottom : VIndex.eTop;
pSize.Height = -pSize.Height;
}
if (pSize.Width < 0)
{
pLocation.X = lHIndex == HIndex.eLeft ? pRect.Right : pPoint.X;
lHIndex = (lHIndex == HIndex.eLeft) ? HIndex.eRight : HIndex.eLeft;
pSize.Width = -pSize.Width;
}
pIndex = (RectPointIndex)GetIndex(lVIndex, lHIndex);
}
