public override void CacheRenderingRegion(ISvgRenderer renderer)
{
SvgTransformableElement refEl = ReferencedElement as SvgTransformableElement;
if (refEl == null)
{
return;
}
if (renderingNode == null)
{
renderingNode = renderer.GetRenderingNode(this);
}
// Check if it has already been calculated
if (renderingNode != null && renderingNode.ScreenRegion != RectangleF.Empty)
{
return;
}
XmlElement refElParent = (XmlElement)refEl.ParentNode;
OwnerDocument.Static = true;
CopyToReferencedElement(refEl);
refElParent.RemoveChild(refEl);
this.AppendChild(refEl);
refEl.CacheRenderingRegion(renderer);
renderingNode.ScreenRegion = refEl.RenderingNode.ScreenRegion;
this.RemoveChild(refEl);
RestoreReferencedElement(refEl);
refElParent.AppendChild(refEl);
OwnerDocument.Static = false;
}
public ISvgMatrix GetScreenCTM()
{
ISvgMatrix matrix = new SvgMatrix();
ISvgTransformList svgTList;
ISvgMatrix vCTM;
// if (this is SvgSvgElement)
if (string.Equals(this.Name, "svg", StringComparison.Ordinal))
{
vCTM = ((SvgSvgElement)this).ViewBoxTransform;
matrix = vCTM;
}
else if (this.Transform != null)
{
svgTList = this.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix;
}
SvgTransformableElement par = ParentNode as SvgTransformableElement;
while (par != null)
{
// TODO: other elements can establish viewports, not just <svg>!
//if (par is SvgSvgElement)
if (string.Equals(par.Name, "svg", StringComparison.Ordinal))
{
vCTM = ((SvgSvgElement)par).ViewBoxTransform;
matrix = vCTM.Multiply(matrix);
}
else
{
svgTList = par.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix.Multiply(matrix);
}
par = par.ParentNode as SvgTransformableElement;
}
// Now scale out the pixels
//ISvgSvgElement root = OwnerDocument.RootElement;
//float innerWidth = this.OwnerDocument.Window.InnerWidth;
//float innerHeight = this.OwnerDocument.Window.InnerHeight;
//if (innerWidth != 0 && innerHeight != 0)
//{
// float screenRatW = (float)root.Width.AnimVal.Value / innerWidth;
// float screenRatH = (float)root.Height.AnimVal.Value / innerHeight;
// matrix.ScaleNonUniform(screenRatW, screenRatH);
//}
return(matrix);
}
/// <summary>
/// For each given element, the accumulation of all transformations that have been defined
/// on the given element and all of its ancestors up to and including the element that
/// established the current viewport (usually, the 'svg' element which is the most
/// immediate ancestor to the given element) is called the current transformation matrix
/// or CTM.
/// </summary>
/// <returns>A matrix representing the mapping of current user coordinates to viewport
/// coordinates.</returns>
public ISvgMatrix GetCTM()
{
ISvgMatrix matrix = new SvgMatrix();
ISvgTransformList svgTList;
ISvgMatrix vCTM;
// if (this is SvgSvgElement)
if (string.Equals(this.Name, "svg", StringComparison.Ordinal))
{
vCTM = ((SvgSvgElement)this).ViewBoxTransform;
matrix = vCTM;
}
else if (this.Transform != null)
{
svgTList = this.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix;
}
ISvgElement nVE = this.NearestViewportElement;
if (nVE != null)
{
SvgTransformableElement par = ParentNode as SvgTransformableElement;
while (par != null && par != nVE)
{
svgTList = par.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix.Multiply(matrix);
par = par.ParentNode as SvgTransformableElement;
}
// if (par == nVE && nVE is SvgSvgElement)
if (par == nVE && string.Equals(nVE.Name, "svg", StringComparison.Ordinal))
{
vCTM = ((SvgSvgElement)nVE).ViewBoxTransform;
matrix = vCTM.Multiply(matrix);
}
}
return(matrix);
}
/// <summary>
/// For each given element, the accumulation of all transformations that have been defined
/// on the given element and all of its ancestors up to and including the element that
/// established the current viewport (usually, the 'svg' element which is the most
/// immediate ancestor to the given element) is called the current transformation matrix
/// or CTM.
/// </summary>
/// <returns>A matrix representing the mapping of current user coordinates to viewport
/// coordinates.</returns>
public ISvgMatrix GetCTM()
{
ISvgMatrix matrix = new SvgMatrix();
ISvgTransformList svgTList;
ISvgMatrix vCTM;
if (this is SvgSvgElement)
{
vCTM = (this as SvgSvgElement).ViewBoxTransform;
matrix = vCTM;
}
else if (this.Transform != null)
{
svgTList = this.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix;
}
ISvgElement nVE = this.NearestViewportElement;
if (nVE != null)
{
SvgTransformableElement par = ParentNode as SvgTransformableElement;
while (par != null && par != nVE)
{
svgTList = par.Transform.AnimVal;
matrix = svgTList.Consolidate().Matrix.Multiply(matrix);
par = par.ParentNode as SvgTransformableElement;
}
if (par == nVE && nVE is SvgSvgElement)
{
vCTM = (nVE as SvgSvgElement).ViewBoxTransform;
matrix = vCTM.Multiply(matrix);
}
}
return(matrix);
}
private SvgRectF GetElementBounds(SvgTransformableElement element, float margin)
{
SvgRenderingHint hint = element.RenderingHint;
if (hint == SvgRenderingHint.Shape || hint == SvgRenderingHint.Text)
{
GraphicsPath gp = GdiRendering.CreatePath(element);
ISvgMatrix svgMatrix = element.GetScreenCTM();
Matrix matrix = new Matrix((float)svgMatrix.A, (float)svgMatrix.B, (float)svgMatrix.C,
(float)svgMatrix.D, (float)svgMatrix.E, (float)svgMatrix.F);
SvgRectF bounds = SvgConverter.ToRect(gp.GetBounds(matrix));
bounds = SvgRectF.Inflate(bounds, margin, margin);
return bounds;
}
SvgUseElement useElement = element as SvgUseElement;
if (useElement != null)
{
SvgTransformableElement refEl = useElement.ReferencedElement as SvgTransformableElement;
if (refEl == null)
return SvgRectF.Empty;
XmlElement refElParent = (XmlElement)refEl.ParentNode;
element.OwnerDocument.Static = true;
useElement.CopyToReferencedElement(refEl);
element.AppendChild(refEl);
SvgRectF bbox = this.GetElementBounds(refEl, margin);
element.RemoveChild(refEl);
useElement.RestoreReferencedElement(refEl);
refElParent.AppendChild(refEl);
element.OwnerDocument.Static = false;
return bbox;
}
SvgRectF union = SvgRectF.Empty;
SvgTransformableElement transformChild;
foreach (XmlNode childNode in element.ChildNodes)
{
if (childNode is SvgDefsElement)
continue;
if (childNode is ISvgTransformable)
{
transformChild = (SvgTransformableElement)childNode;
SvgRectF bbox = this.GetElementBounds(transformChild, margin);
if (bbox != SvgRectF.Empty)
{
if (union == SvgRectF.Empty)
union = bbox;
else
union = SvgRectF.Union(union, bbox);
}
}
}
return union;
}
public RectangleF GetBRect(float margin)
{
if (this is ISharpGDIPath)
{
ISharpGDIPath gdiPathElm = (ISharpGDIPath)this;
GraphicsPath gp = gdiPathElm.GetGraphicsPath();
SvgMatrix svgMatrix = (SvgMatrix)this.GetScreenCTM();
RectangleF bounds = gp.GetBounds(svgMatrix.ToMatrix());
bounds = RectangleF.Inflate(bounds, margin, margin);
return(bounds);
}
else if (this is ISvgUseElement)
{
SvgUseElement use = (SvgUseElement)this;
SvgTransformableElement refEl = use.ReferencedElement as SvgTransformableElement;
if (refEl == null)
{
return(RectangleF.Empty);
}
XmlElement refElParent = (XmlElement)refEl.ParentNode;
OwnerDocument.Static = true;
use.CopyToReferencedElement(refEl);
this.AppendChild(refEl);
RectangleF bbox = refEl.GetBRect(margin);
this.RemoveChild(refEl);
use.RestoreReferencedElement(refEl);
refElParent.AppendChild(refEl);
OwnerDocument.Static = false;
return(bbox);
}
else
{
RectangleF union = RectangleF.Empty;
SvgTransformableElement transformChild;
foreach (XmlNode childNode in ChildNodes)
{
if (childNode is SvgDefsElement)
{
continue;
}
if (childNode is ISvgTransformable)
{
transformChild = (SvgTransformableElement)childNode;
RectangleF bbox = transformChild.GetBRect(margin);
if (bbox != RectangleF.Empty)
{
if (union == RectangleF.Empty)
{
union = bbox;
}
else
{
union = RectangleF.Union(union, bbox);
}
}
}
}
return(union);
}
}
