// Enumerate the drawings in the DrawingGroup.
private void EnumDrawingGroup(DrawingGroup drawingGroup)
{
// Enumerate the drawings in the DrawingCollection.
foreach (Drawing drawing in drawingGroup.Children)
{
string objectId = SvgObject.GetId(drawing);
if (!string.IsNullOrWhiteSpace(objectId))
{
_idMap[objectId] = drawing;
}
string objectName = (string)drawing.GetValue(FrameworkElement.NameProperty);
if (!string.IsNullOrWhiteSpace(objectName))
{
_idMap[objectName] = drawing;
}
string uniqueId = SvgObject.GetUniqueId(drawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
_guidMap[uniqueId] = drawing;
}
DrawingGroup groupDrawing = null;
// If the drawing is a DrawingGroup, call the function recursively.
if (TryCast.Cast(drawing, out groupDrawing))
{
SvgObjectType objectType = SvgObject.GetType(groupDrawing);
if (objectType != SvgObjectType.Text)
{
EnumDrawingGroup(groupDrawing);
}
}
}
}
public WpfHitTestResult HitTest(Rect rect, IntersectionDetail detail)
{
var svgDrawing = this.PerformHitTest(rect, detail);
if (svgDrawing == null)
{
return(WpfHitTestResult.Empty);
}
string uniqueId = SvgObject.GetUniqueId(svgDrawing);
if (string.IsNullOrWhiteSpace(uniqueId))
{
return(new WpfHitTestResult(rect, null, svgDrawing));
// return WpfHitTestResult.Empty;
}
var svgElement = this.GetSvgByUniqueId(uniqueId);
if (svgElement == null)
{
return(new WpfHitTestResult(rect, null, svgDrawing));
// return WpfHitTestResult.Empty;
}
return(new WpfHitTestResult(rect, svgElement, svgDrawing));
}
public WpfHitTestResult HitTest(Point point)
{
var svgDrawing = this.PerformHitTest(point);
if (svgDrawing == null)
{
return(WpfHitTestResult.Empty);
}
string uniqueId = SvgObject.GetUniqueId(svgDrawing);
if (string.IsNullOrWhiteSpace(uniqueId))
{
if (_hitGroup != null && _hitGroup.Children.Contains(svgDrawing))
{
var groupElement = this.GetSvgByUniqueId(uniqueId);
if (groupElement != null)
{
return(new WpfHitTestResult(point, groupElement, svgDrawing));
}
}
return(new WpfHitTestResult(point, null, svgDrawing));
// return WpfHitTestResult.Empty;
}
var svgElement = this.GetSvgByUniqueId(uniqueId);
if (svgElement == null)
{
return(new WpfHitTestResult(point, null, svgDrawing));
// return WpfHitTestResult.Empty;
}
return(new WpfHitTestResult(point, svgElement, svgDrawing));
}
public Transform GetTransform(WpfDrawingDocument document, Drawing hitDrawing)
{
var displayTransform = (Transform)document.DisplayTransform.Inverse;
if (_parent == null)
{
return(displayTransform);
}
var splitPaths = this.SplitPath;
if (splitPaths == null || splitPaths.Length == 0)
{
return(displayTransform);
}
foreach (var splitPath in splitPaths)
{
System.Diagnostics.Trace.WriteLine(splitPath);
}
var uniqueId = SvgObject.GetUniqueId(hitDrawing);
TransformGroup transforms = new TransformGroup();
transforms.Children.Add(displayTransform);
var drawingLayer = document.GetDrawingLayer();
if (drawingLayer != null && drawingLayer.Transform != null)
{
var transform = drawingLayer.Transform;
if (!transform.Value.IsIdentity)
{
transforms.Children.Add(transform);
}
}
for (int i = 0; i < splitPaths.Length; i++)
{
var splitPath = splitPaths[i];
if (!string.IsNullOrWhiteSpace(uniqueId) &&
string.Equals(splitPath, uniqueId, StringComparison.OrdinalIgnoreCase))
{
continue;
}
var drawing = document.GetByUniqueId(splitPath) as DrawingGroup;
if (drawing != null && drawing.Transform != null)
{
if (drawing.Transform != drawingLayer.Transform)
{
transforms.Children.Add(drawing.Transform);
}
}
}
return(transforms);
}
private bool HitTestDrawing(DrawingGroup group, Point pt, out Drawing hitDrawing)
{
hitDrawing = null;
if (group.Bounds.Contains(pt))
{
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
DrawingCollection drawings = group.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, pt))
{
hitDrawing = drawing;
return(true);
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
SvgObjectType objectType = SvgObject.GetType(groupDrawing);
//if (objectType == SvgObjectType.Text && groupDrawing.Bounds.Contains(pt))
if (objectType == SvgObjectType.Text)
{
hitDrawing = drawing;
return(true);
}
if (HitTestDrawing(groupDrawing, pt, out hitDrawing))
{
return(true);
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, pt))
{
hitDrawing = glyRunDrawing;
return(true);
}
}
}
string uniqueId = SvgObject.GetUniqueId(group);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
_hitGroup = group;
}
}
return(false);
}
private Drawing PerformHitTest(Rect rect, IntersectionDetail detail)
{
if (_svgDrawing == null)
{
return(null);
}
var rectDisplay = _displayTransform.TransformBounds(rect);
var geomDisplay = new RectangleGeometry(rectDisplay);
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
Drawing foundDrawing = null;
DrawingCollection drawings = _svgDrawing.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, geomDisplay, detail))
{
string uniqueId = SvgObject.GetUniqueId(drawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
foundDrawing = drawing;
break;
}
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
if (SvgObject.GetType(groupDrawing) == SvgObjectType.Text)
{
var textBounds = new RectangleGeometry(groupDrawing.Bounds);
if (textBounds.FillContainsWithDetail(geomDisplay) == detail)
{
string uniqueId = SvgObject.GetUniqueId(drawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
foundDrawing = drawing;
break;
}
}
}
if (HitTestDrawing(groupDrawing, geomDisplay, out foundDrawing, detail))
{
string uniqueId = SvgObject.GetUniqueId(drawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
foundDrawing = drawing;
break;
}
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, geomDisplay, detail))
{
foundDrawing = drawing;
break;
}
}
}
return(foundDrawing);
}
private bool HitTestDrawing(DrawingGroup group, Point pt, out Drawing hitDrawing)
{
hitDrawing = null;
bool isHit = false;
if (group.Bounds.Contains(pt))
{
var transform = group.Transform;
if (transform != null)
{
var matrix = transform.Value;
if (matrix != null && matrix.IsIdentity == false)
{
pt = transform.Inverse.Transform(pt);
}
}
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
DrawingCollection drawings = group.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, pt))
{
hitDrawing = drawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
isHit = false;
}
else
{
return(true);
}
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
SvgObjectType objectType = SvgObject.GetType(groupDrawing);
//if (objectType == SvgObjectType.Text && groupDrawing.Bounds.Contains(pt))
if (objectType == SvgObjectType.Text)
{
hitDrawing = drawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
isHit = false;
}
else
{
return(true);
}
}
if (HitTestDrawing(groupDrawing, pt, out hitDrawing))
{
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
isHit = false;
}
else
{
return(true);
}
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, pt))
{
hitDrawing = glyRunDrawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
isHit = false;
}
else
{
return(true);
}
}
}
}
string uniqueId = SvgObject.GetUniqueId(group);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
_hitGroup = group;
}
}
return(isHit);
}
private Drawing PerformHitTest(Point pt)
{
_hitGroup = null;
if (_hitList == null)
{
_hitList = new SortedList <int, Drawing>();
}
else if (_hitList.Count != 0)
{
_hitList.Clear();
}
if (_svgDrawing == null)
{
return(null);
}
Point ptDisplay = _displayTransform.Transform(pt);
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
Drawing foundDrawing = null;
DrawingCollection drawings = _svgDrawing.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, ptDisplay))
{
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
}
else
{
string uniqueId = SvgObject.GetUniqueId(geometryDrawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
foundDrawing = drawing;
break;
}
}
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
int orderNumber = SvgObject.GetOrder(drawing);
if (SvgObject.GetType(groupDrawing) == SvgObjectType.Text &&
groupDrawing.Bounds.Contains(ptDisplay))
{
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
}
else
{
foundDrawing = drawing;
break;
}
}
if (HitTestDrawing(groupDrawing, ptDisplay, out foundDrawing))
{
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
}
else
{
string uniqueId = SvgObject.GetUniqueId(foundDrawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
//foundDrawing = drawing;
break;
}
}
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, ptDisplay))
{
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
}
else
{
foundDrawing = drawing;
break;
}
}
}
}
if (_hitList.Count != 0)
{
return(_hitList.LastOrDefault().Value);
}
if (foundDrawing == null)
{
return(_hitGroup);
}
return(foundDrawing);
}
private bool HitTestDrawing(DrawingGroup group, Point pt, out Drawing hitDrawing, bool isText = false)
{
hitDrawing = null;
bool isHit = false;
if (!group.Bounds.Contains(pt))
{
return(isHit);
}
var transform = group.Transform;
if (transform != null && !transform.Value.IsIdentity)
{
pt = transform.Inverse.Transform(pt);
}
var groupHitPath = _hitPath;
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
DrawingCollection drawings = group.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(drawing));
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, pt))
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(geometryDrawing));
hitDrawing = drawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(geometryDrawing));
isHit = false;
}
else
{
orderNumber = SvgObject.GetOrder(group);
if (orderNumber >= 0)
{
_hitList[orderNumber] = group;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(group));
}
if (!string.IsNullOrWhiteSpace(SvgObject.GetUniqueId(group)))
{
_hitGroup = group;
}
return(true);
}
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
_hitPath = groupHitPath.AddChild(SvgObject.GetUniqueId(groupDrawing));
SvgObjectType objectType = SvgObject.GetType(groupDrawing);
// if (objectType == SvgObjectType.Text && groupDrawing.Bounds.Contains(pt))
if (objectType == SvgObjectType.Text && this.HitTestText(groupDrawing, pt, out hitDrawing))
// if (objectType == SvgObjectType.Text)
{
hitDrawing = drawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath;
isHit = false;
}
else
{
return(true);
}
}
else
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(hitDrawing));
var currentPath = _hitPath;
try
{
if (HitTestDrawing(groupDrawing, pt, out hitDrawing))
{
// int orderNumber = SvgObject.GetOrder(drawing);
int orderNumber = SvgObject.GetOrder(hitDrawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(hitDrawing));
isHit = false;
}
else
{
orderNumber = SvgObject.GetOrder(groupDrawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = groupDrawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(groupDrawing));
}
return(true);
}
}
}
finally
{
_hitPath = currentPath;
}
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, pt))
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(glyRunDrawing));
hitDrawing = glyRunDrawing;
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(glyRunDrawing));
isHit = false;
}
else
{
return(true);
}
}
}
}
string uniqueId = SvgObject.GetUniqueId(group);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
_hitGroup = group;
}
return(isHit);
}
private Drawing PerformHitTest(Point pt)
{
if (_svgDrawing == null)
{
return(null);
}
_hitGroup = null;
if (_hitList == null)
{
_hitList = new SortedList <int, Drawing>();
_hitPaths = new SortedList <int, WpfHitPath>();
}
else if (_hitList.Count != 0)
{
_hitList.Clear();
_hitPaths.Clear();
}
var hitRootPath = new WpfHitPath();
_hitPath = hitRootPath;
Point ptDisplay = _displayTransform.Transform(pt);
DrawingGroup groupDrawing = null;
GlyphRunDrawing glyRunDrawing = null;
GeometryDrawing geometryDrawing = null;
Drawing foundDrawing = null;
//var isFound = false;
//var drawingLayer = this.GetDrawingLayer(_svgDrawing, ref isFound);
//System.Diagnostics.Trace.WriteLine("GetId: " + SvgObject.GetId(drawingLayer));
//System.Diagnostics.Trace.WriteLine("GetName: " + SvgObject.GetName(drawingLayer));
//System.Diagnostics.Trace.WriteLine("GetUniqueId: " + SvgObject.GetUniqueId(drawingLayer));
//DrawingCollection drawings = drawingLayer.Children;
DrawingCollection drawings = _svgDrawing.Children;
for (int i = drawings.Count - 1; i >= 0; i--)
{
Drawing drawing = drawings[i];
System.Diagnostics.Trace.WriteLine("GetId: " + SvgObject.GetId(drawing));
System.Diagnostics.Trace.WriteLine("GetName: " + SvgObject.GetName(drawing));
System.Diagnostics.Trace.WriteLine("GetUniqueId: " + SvgObject.GetUniqueId(drawing));
if (TryCast.Cast(drawing, out geometryDrawing))
{
if (HitTestDrawing(geometryDrawing, ptDisplay))
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(geometryDrawing));
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(geometryDrawing));
}
else
{
string uniqueId = SvgObject.GetUniqueId(geometryDrawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
foundDrawing = drawing;
break;
}
}
}
}
else if (TryCast.Cast(drawing, out groupDrawing))
{
//var ptSaved = ptDisplay;
//var transform = groupDrawing.Transform;
//if (transform != null && !transform.Value.IsIdentity)
//{
// ptDisplay = transform.Inverse.Transform(ptDisplay);
//}
_hitPath = hitRootPath.AddChild(SvgObject.GetUniqueId(groupDrawing));
int orderNumber = SvgObject.GetOrder(groupDrawing);
//if (SvgObject.GetType(groupDrawing) == SvgObjectType.Text &&
// groupDrawing.Bounds.Contains(ptDisplay))
if (SvgObject.GetType(groupDrawing) == SvgObjectType.Text &&
this.HitTestText(groupDrawing, ptDisplay, out foundDrawing))
{
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath;
}
else
{
foundDrawing = drawing;
break;
}
}
else
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(groupDrawing));
var currentPath = _hitPath;
try
{
if (HitTestDrawing(groupDrawing, ptDisplay, out foundDrawing))
{
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(foundDrawing));
}
else
{
string uniqueId = SvgObject.GetUniqueId(foundDrawing);
if (!string.IsNullOrWhiteSpace(uniqueId))
{
//foundDrawing = drawing;
break;
}
}
}
}
finally
{
_hitPath = currentPath;
}
}
}
else if (TryCast.Cast(drawing, out glyRunDrawing))
{
if (HitTestDrawing(glyRunDrawing, ptDisplay))
{
// _hitPath = _hitPath.AddChild(SvgObject.GetUniqueId(glyRunDrawing));
int orderNumber = SvgObject.GetOrder(drawing);
if (orderNumber >= 0)
{
_hitList[orderNumber] = drawing;
_hitPaths[orderNumber] = _hitPath.AddChild(SvgObject.GetUniqueId(glyRunDrawing));
}
else
{
foundDrawing = drawing;
break;
}
}
}
}
if (_hitList.Count != 0)
{
var key = _hitList.LastOrDefault().Key;
if (_hitPaths.ContainsKey(key))
{
System.Diagnostics.Trace.WriteLine("Key Found: " + _hitPaths[key].Path);
}
return(_hitList.LastOrDefault().Value);
}
if (foundDrawing == null)
{
return(_hitGroup);
}
return(foundDrawing);
}