/// <summary>
/// The overview rectangle should only appear selected if the <see cref="T:Northwoods.Go.GoOverview" />
/// supports resizing (i.e. <see cref="P:Northwoods.Go.GoView.AllowSelect" /> and <see cref="P:Northwoods.Go.GoView.AllowResize" /> are true),
/// and even then the handles will not be seen since their <see cref="T:Northwoods.Go.GoHandle" />.<see cref="T:Northwoods.Go.GoHandleStyle" />
/// is <see cref="F:Northwoods.Go.GoHandleStyle.None" />.
/// </summary>
/// <param name="sel"></param>
/// <param name="selectedObj"></param>
public override void AddSelectionHandles(GoSelection sel, GoObject selectedObj)
{
GoView view = sel.View;
if (view != null && view.CanSelectObjects() && view.CanResizeObjects())
{
view.ResizeHandleSize = new SizeF(4f / view.DocScale, 4f / view.DocScale);
RemoveSelectionHandles(sel);
RectangleF bounds = Bounds;
GoHandle goHandle = sel.CreateResizeHandle(this, selectedObj, new PointF(bounds.Left, bounds.Top), 2, filled: true) as GoHandle;
if (goHandle != null)
{
goHandle.Style = GoHandleStyle.None;
}
goHandle = (sel.CreateResizeHandle(this, selectedObj, new PointF(bounds.Right, bounds.Top), 4, filled: true) as GoHandle);
if (goHandle != null)
{
goHandle.Style = GoHandleStyle.None;
}
goHandle = (sel.CreateResizeHandle(this, selectedObj, new PointF(bounds.Right, bounds.Bottom), 8, filled: true) as GoHandle);
if (goHandle != null)
{
goHandle.Style = GoHandleStyle.None;
}
goHandle = (sel.CreateResizeHandle(this, selectedObj, new PointF(bounds.Left, bounds.Bottom), 16, filled: true) as GoHandle);
if (goHandle != null)
{
goHandle.Style = GoHandleStyle.None;
}
}
}
private static void SetResizeCursor(IGoHandle handle, float angle)
{
GoHandle goHandle = handle as GoHandle;
if (goHandle != null)
{
float num = angle;
switch (goHandle.HandleID)
{
default:
return;
case 64:
num += 0f;
break;
case 8:
num += 45f;
break;
case 128:
num += 90f;
break;
case 16:
num += 135f;
break;
case 256:
num += 180f;
break;
case 2:
num += 225f;
break;
case 32:
num += 270f;
break;
case 4:
num += 315f;
break;
}
if (num < 0f)
{
num += 360f;
}
else if (num >= 360f)
{
num -= 360f;
}
if (num < 22.5f)
{
goHandle.CursorName = "e-resize";
}
else if (num < 67.5f)
{
goHandle.CursorName = "se-resize";
}
else if (num < 112.5f)
{
goHandle.CursorName = "s-resize";
}
else if (num < 157.5f)
{
goHandle.CursorName = "sw-resize";
}
else if (num < 202.5f)
{
goHandle.CursorName = "w-resize";
}
else if (num < 247.5f)
{
goHandle.CursorName = "nw-resize";
}
else if (num < 292.5f)
{
goHandle.CursorName = "n-resize";
}
else if (num < 337.5f)
{
goHandle.CursorName = "ne-resize";
}
else
{
goHandle.CursorName = "e-resize";
}
}
}
