using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Drawing; namespace Svg.Document_Structure { /// <summary> /// An element used to group SVG shapes. /// </summary> [SvgElement("symbol")] public class SvgSymbol : SvgVisualElement { /// <summary> /// Gets or sets the viewport of the element. /// </summary> /// <value></value> [SvgAttribute("viewBox")] public SvgViewBox ViewBox { get { return this.Attributes.GetAttribute<SvgViewBox>("viewBox"); } set { this.Attributes["viewBox"] = value; } } /// <summary> /// Gets or sets the aspect of the viewport. /// </summary> /// <value></value> [SvgAttribute("preserveAspectRatio")] public SvgAspectRatio AspectRatio { get { return this.Attributes.GetAttribute<SvgAspectRatio>("preserveAspectRatio"); } set { this.Attributes["preserveAspectRatio"] = value; } } /// <summary> /// Gets the <see cref="GraphicsPath"/> for this element. /// </summary> /// <value></value> public override System.Drawing.Drawing2D.GraphicsPath Path(ISvgRenderer renderer) { return GetPaths(this, renderer); } /// <summary> /// Gets the bounds of the element. /// </summary> /// <value>The bounds.</value> 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; } } /// <summary> /// Applies the required transforms to <see cref="ISvgRenderer"/>. /// </summary> /// <param name="renderer">The <see cref="ISvgRenderer"/> to be transformed.</param> protected internal override bool PushTransforms(ISvgRenderer renderer) { if (!base.PushTransforms(renderer)) return false; this.ViewBox.AddViewBoxTransform(this.AspectRatio, renderer, null); return true; } public override SvgElement DeepCopy() { return DeepCopy<SvgSymbol>(); } public override SvgElement DeepCopy<T>() { var newObj = base.DeepCopy<T>() as SvgSymbol; if (this.Fill != null) newObj.Fill = this.Fill.DeepCopy() as SvgPaintServer; return newObj; } } }