//IVdShape
public static object DetectSelectedShape(VdDocument doc, Point pos,
TouchDevice d,
out Shape resizeNode)
{
resizeNode = null;
HitTestResult htr = VisualTreeHelper.HitTest(doc.Scene, pos);
if (htr == null)
{
return(null);
}
var cluster = ShapeHitTester.findVdCluster(htr.VisualHit);
if (cluster != null)
{
return(cluster);
}
var text = ShapeHitTester.findVdText(htr.VisualHit);
if (text != null)
{
return(text);
}
var badge = ShapeHitTester.findVdBadge(htr.VisualHit);
if (badge != null)
{
return(badge);
}
var img = ShapeHitTester.findVdImg(htr.VisualHit);
if (img != null)
{
return(img);
}
//is it resize node?
resizeNode = htr.VisualHit as Shape;
if (resizeNode != null)
{
var vdShape = resizeNode.Tag as IVdShape;
if (vdShape != null && vdShape.IsVisible())
{
return(vdShape);
}
}
//empty area, find nearest shape
return(NearestShape(doc, pos));
}
public void InpDeviceDown(Point pos, TouchDevice touchDev)
{
if (ShapeHitTester.IsPaletteHit(_doc, pos))
{
_palette.StartManip(pos, touchDev);
return;
}
DocTools.UnfocusAll(_doc.GetShapes().Where(sh => !sh.IsManipulated()));
switch (_modeMgr.Mode)
{
case ShapeInputMode.CreationExpected:
_modeMgr.Mode = ShapeInputMode.ManipulationExpected;
CreateManipulate(_palette.shapeType, pos.X, pos.Y);
if (_palette != null)
{
_palette.ResetOvers();
}
break;
case ShapeInputMode.LinkedObj1Expected:
GetLinkables(pos, touchDev);
if (linkCreation.end1 != null)
{
ModeMgr.Mode = ShapeInputMode.LinkedObj2Expected;
}
break;
case ShapeInputMode.LinkedObj2Expected:
GetLinkables(pos, touchDev);
if (linkCreation.end1 != null && linkCreation.end2 != null)
{
_doc.BeginCreateLink(linkCreation.end1.GetId(), linkCreation.end2.GetId(), linkCreation.linkHead);
linkCreation.end1 = null;
linkCreation.end2 = null;
ModeMgr.Mode = ShapeInputMode.ManipulationExpected;
if (_palette != null)
{
_palette.ResetOvers();
}
}
break;
case ShapeInputMode.ManipulationExpected:
//no current touch points on shapes (maybe touch points over empty space)
Shape resizeNode = null;
var underContact = DocTools.DetectSelectedShape(_doc, pos, touchDev, out resizeNode) as IVdShape;
if (underContact == null)
{
return;
}
var shapeFree = underContact.GetCursor() == null;
var shapeLockedByUs = false;
if (!shapeFree)
{
shapeLockedByUs = underContact.GetCursor().OwnerId == _palette.GetOwnerId();
}
//this shape free and we don't have cursors
if (shapeFree && _doc.VolatileCtx.LocalCursor == null)
{
//shape free, try lock it and schedule cursor approval continuation
{
cursorApproval.resizeNode = resizeNode;
cursorApproval.pos = pos;
cursorApproval.td = touchDev;
_modeMgr.Mode = ShapeInputMode.CursorApprovalExpected;
}
//take new local cursor
_doc.VolatileCtx.BeginTakeShapeWithLocalCursor(underContact.Id());
}
else if (shapeLockedByUs)
{
CaptureAndStartManip(underContact, pos, resizeNode, touchDev);
}
break;
case ShapeInputMode.Manipulating:
break;
case ShapeInputMode.CursorApprovalExpected:
break;
default:
throw new NotSupportedException();
}
}
