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Eric Domke authored
- Adding W3C test cases and a test fixture - Fixed support for CSS stylesheets (particularly when class names are referenced) - Refactoring unit calculations so that percentages and fractions calculate more accurately - SvgImage: - Support PreserveAspectRatio attribute - Support for referencing svg images - Refactored text rendering to use the AttributeCollection inheritance scheme - Initial attempt at 'ex' unit support - Added support for system color names - Changed parsing of entities to support XML entities - Supporting loading of a svg document directly from a XmlDocument with requiring serializing the document as a string first. - ...
d5c659a5
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace Svg
{
/// <summary>
/// An SVG element to render circles to the document.
/// </summary>
[SvgElement("circle")]
public class SvgCircle : SvgVisualElement
{
private GraphicsPath _path;
private SvgUnit _radius;
private SvgUnit _centerX;
private SvgUnit _centerY;
/// <summary>
/// Gets the center point of the circle.
/// </summary>
/// <value>The center.</value>
public SvgPoint Center
{
get { return new SvgPoint(this.CenterX, this.CenterY); }
}
[SvgAttribute("cx")]
public virtual SvgUnit CenterX
{
get { return this._centerX; }
set
{
this._centerX = value;
this.IsPathDirty = true;
}
}
[SvgAttribute("cy")]
public virtual SvgUnit CenterY
{
get { return this._centerY; }
set
{
this._centerY = value;
this.IsPathDirty = true;
}
}
[SvgAttribute("r")]
public virtual SvgUnit Radius
{
get { return this._radius; }
set { this._radius = value; this.IsPathDirty = true; }
}
/// <summary>
/// Gets the bounds of the circle.
/// </summary>
/// <value>The rectangular bounds of the circle.</value>
public override RectangleF Bounds
{
get { return this.Path.GetBounds(); }
}
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/// <summary>
/// Gets a value indicating whether the circle requires anti-aliasing when being rendered.
/// </summary>
/// <value>
/// <c>true</c> if the circle requires anti-aliasing; otherwise, <c>false</c>.
/// </value>
protected override bool RequiresSmoothRendering
{
get { return true; }
}
/// <summary>
/// Gets the <see cref="GraphicsPath"/> representing this element.
/// </summary>
public override GraphicsPath Path
{
get
{
if (this._path == null || this.IsPathDirty)
{
_path = new GraphicsPath();
_path.StartFigure();
_path.AddEllipse(this.Center.ToDeviceValue().X - this.Radius.ToDeviceValue(), this.Center.ToDeviceValue().Y - this.Radius.ToDeviceValue(), 2 * this.Radius.ToDeviceValue(), 2 * this.Radius.ToDeviceValue());
_path.CloseFigure();
this.IsPathDirty = false;
}
return _path;
}
}
/// <summary>
/// Renders the circle to the specified <see cref="Graphics"/> object.
/// </summary>
/// <param name="graphics">The graphics object.</param>
protected override void Render(SvgRenderer renderer)
{
// Don't draw if there is no radius set
if (this.Radius.Value > 0.0f)
{
base.Render(renderer);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SvgCircle"/> class.
/// </summary>
public SvgCircle()
{
CenterX = new SvgUnit(0.0f);
CenterY = new SvgUnit(0.0f);
}
public override SvgElement DeepCopy()
{
return DeepCopy<SvgCircle>();
}
public override SvgElement DeepCopy<T>()
{
var newObj = base.DeepCopy<T>() as SvgCircle;
newObj.CenterX = this.CenterX;
newObj.CenterY = this.CenterY;
newObj.Radius = this.Radius;
return newObj;
}
}
}