/// <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;
}
}
}
public static void AddRectangleHandles(GoObject myObject, RectangleF rect, PointF center, float angle, GoSelection sel, GoObject selectedObj)
{
GoView view = sel.View;
bool flag = view?.CanResizeObjects() ?? true;
bool flag2 = view?.CanReshapeObjects() ?? true;
if (myObject.CanResize() && flag)
{
float x = rect.X;
float x2 = rect.X + rect.Width / 2f;
float x3 = rect.X + rect.Width;
float y = rect.Y;
float y2 = rect.Y + rect.Height / 2f;
float y3 = rect.Y + rect.Height;
double num = (double)angle * Math.PI / 180.0;
double cosine = Math.Cos(num);
double sine = Math.Sin(num);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x, y), center, cosine, sine), 2, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x3, y), center, cosine, sine), 4, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x3, y3), center, cosine, sine), 8, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x, y3), center, cosine, sine), 16, filled: true), angle);
if (myObject.CanReshape() && flag2)
{
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x2, y), center, cosine, sine), 32, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x3, y2), center, cosine, sine), 64, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x2, y3), center, cosine, sine), 128, filled: true), angle);
SetResizeCursor(sel.CreateResizeHandle(myObject, selectedObj, RotatePoint(new PointF(x, y2), center, cosine, sine), 256, filled: true), angle);
}
}
}
/// <summary>
/// Return the appropriate resize cursor name for the handle ID's corresponding to
/// the standard spots, but return null if the object cannot be resized.
/// </summary>
/// <param name="view"></param>
/// <returns>
/// null if <see cref="M:Northwoods.Go.GoView.CanResizeObjects" /> is false or if
/// <see cref="P:Northwoods.Go.GoHandle.GoObject" />.<c>CanResize</c> and <see cref="P:Northwoods.Go.GoHandle.GoObject" />.<c>CanReshape</c> are both false;
/// otherwise the value of <see cref="P:Northwoods.Go.GoHandle.CursorName" /> if it is non-null;
/// finally a cursor name depending on the <see cref="P:Northwoods.Go.GoHandle.HandleID" />,
/// such as "se-resize" for <see cref="P:Northwoods.Go.GoHandle.GoObject" />.<c>BottomRight</c> or
/// "hand" for <see cref="F:Northwoods.Go.GoLink.RelinkableToHandle" />, or "move"
/// for most other handles, or finally null if the <see cref="P:Northwoods.Go.GoHandle.HandleID" />
/// is <see cref="P:Northwoods.Go.GoHandle.GoObject" />.<c>NoHandle</c>.
/// </returns>
public override string GetCursorName(GoView view)
{
GoObject handledObject = HandledObject;
if (handledObject == null || (view != null && !view.CanResizeObjects()) || (!handledObject.CanResize() && !handledObject.CanReshape()))
{
return(null);
}
string text = CursorName;
if (text == null)
{
text = GetCursorNameForHandleID(HandleID);
}
return(text);
}
/// <summary>
/// Display the appropriate selected appearance, normally, resize selection handles
/// at each point of the polygon.
/// </summary>
/// <param name="sel"></param>
/// <param name="selectedObj"></param>
/// <remarks>
/// If this polygon is resizable and reshapable, we add resize selection
/// handles at each polygon point, with handle IDs equal to
/// <see cref="F:Northwoods.Go.GoObject.LastHandle" /> plus the index of the point.
/// </remarks>
public override void AddSelectionHandles(GoSelection sel, GoObject selectedObj)
{
GoView view = sel.View;
bool flag = view?.CanResizeObjects() ?? true;
bool flag2 = view?.CanReshapeObjects() ?? true;
if (!(CanResize() && flag) || !(CanReshape() && flag2))
{
base.AddSelectionHandles(sel, selectedObj);
return;
}
sel.RemoveHandles(this);
checked
{
int num = PointsCount - 1;
for (int i = 0; i <= num; i++)
{
PointF point = GetPoint(i);
sel.CreateResizeHandle(this, selectedObj, point, 8192 + i, filled: true);
}
}
}
