using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
namespace Svg.Document_Structure
{
///
/// An element used to group SVG shapes.
///
[SvgElement("symbol")]
public class SvgSymbol : SvgVisualElement
{
///
/// Gets or sets the viewport of the element.
///
///
[SvgAttribute("viewBox")]
public SvgViewBox ViewBox
{
get { return this.Attributes.GetAttribute("viewBox"); }
set { this.Attributes["viewBox"] = value; }
}
///
/// Gets or sets the aspect of the viewport.
///
///
[SvgAttribute("preserveAspectRatio")]
public SvgAspectRatio AspectRatio
{
get { return this.Attributes.GetAttribute("preserveAspectRatio"); }
set { this.Attributes["preserveAspectRatio"] = value; }
}
///
/// Gets the for this element.
///
///
public override System.Drawing.Drawing2D.GraphicsPath Path(ISvgRenderer renderer)
{
return GetPaths(this, renderer);
}
///
/// Gets the bounds of the element.
///
/// The bounds.
public override System.Drawing.RectangleF Bounds
{
get
{
var r = new RectangleF();
foreach (var c in this.Children)
{
if (c is SvgVisualElement)
{
// First it should check if rectangle is empty or it will return the wrong Bounds.
// This is because when the Rectangle is Empty, the Union method adds as if the first values where X=0, Y=0
if (r.IsEmpty)
{
r = ((SvgVisualElement)c).Bounds;
}
else
{
var childBounds = ((SvgVisualElement)c).Bounds;
if (!childBounds.IsEmpty)
{
r = RectangleF.Union(r, childBounds);
}
}
}
}
return r;
}
}
protected override bool Renderable { get { return false; } }
///
/// Applies the required transforms to .
///
/// The to be transformed.
protected internal override bool PushTransforms(ISvgRenderer renderer)
{
if (!base.PushTransforms(renderer)) return false;
this.ViewBox.AddViewBoxTransform(this.AspectRatio, renderer, null);
return true;
}
// Only render if the parent is set to a Use element
protected override void Render(ISvgRenderer renderer)
{
if (_parent is SvgUse) base.Render(renderer);
}
public override SvgElement DeepCopy()
{
return DeepCopy();
}
public override SvgElement DeepCopy()
{
var newObj = base.DeepCopy() as SvgSymbol;
if (this.Fill != null)
newObj.Fill = this.Fill.DeepCopy() as SvgPaintServer;
return newObj;
}
}
}