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SvgRenderer.cs 4.29 KiB
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Text;
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namespace Svg
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{
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    /// <summary>
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    /// Convenience wrapper around a graphics object
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    /// </summary>
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    public sealed class SvgRenderer : IDisposable, IGraphicsProvider, ISvgRenderer
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    {
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        private Graphics _innerGraphics;
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        private Stack<ISvgBoundable> _boundables = new Stack<ISvgBoundable>();
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        public void SetBoundable(ISvgBoundable boundable)
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        {
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            _boundables.Push(new ImmutableBoundable(boundable));
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        }
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        public ISvgBoundable GetBoundable()
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        {
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            return _boundables.Peek();
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        }
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        public ISvgBoundable PopBoundable()
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        {
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            return _boundables.Pop();
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        }
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        public float DpiY
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        {
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            get { return _innerGraphics.DpiY; }
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        }
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        /// <summary>
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        /// Initializes a new instance of the <see cref="ISvgRenderer"/> class.
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        /// </summary>
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        private SvgRenderer(Graphics graphics)
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        {
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            this._innerGraphics = graphics;
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        }
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        public void DrawImage(Image image, RectangleF destRect, RectangleF srcRect, GraphicsUnit graphicsUnit)
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        {
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            _innerGraphics.DrawImage(image, destRect, srcRect, graphicsUnit);
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        }
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        public void DrawImageUnscaled(Image image, Point location)
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        {
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            this._innerGraphics.DrawImageUnscaled(image, location);
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        }
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        public void DrawPath(Pen pen, GraphicsPath path)
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        {
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            this._innerGraphics.DrawPath(pen, path);
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        }
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        public void FillPath(Brush brush, GraphicsPath path)
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        {
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            this._innerGraphics.FillPath(brush, path);
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        }
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        public Region GetClip()
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        {
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            return this._innerGraphics.Clip;
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        }
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        public void RotateTransform(float fAngle, MatrixOrder order = MatrixOrder.Append)
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        {
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            this._innerGraphics.RotateTransform(fAngle, order);
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        }
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        public void ScaleTransform(float sx, float sy, MatrixOrder order = MatrixOrder.Append)
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        {
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this._innerGraphics.ScaleTransform(sx, sy, order); } public void SetClip(Region region, CombineMode combineMode = CombineMode.Replace) { this._innerGraphics.SetClip(region, combineMode); } public void TranslateTransform(float dx, float dy, MatrixOrder order = MatrixOrder.Append) { this._innerGraphics.TranslateTransform(dx, dy, order); } public SmoothingMode SmoothingMode { get { return this._innerGraphics.SmoothingMode; } set { this._innerGraphics.SmoothingMode = value; } } public Matrix Transform { get { return this._innerGraphics.Transform; } set { this._innerGraphics.Transform = value; } } public void Dispose() { this._innerGraphics.Dispose(); } Graphics IGraphicsProvider.GetGraphics() { return _innerGraphics; } /// <summary> /// Creates a new <see cref="ISvgRenderer"/> from the specified <see cref="Image"/>. /// </summary> /// <param name="image"><see cref="Image"/> from which to create the new <see cref="ISvgRenderer"/>.</param> public static ISvgRenderer FromImage(Image image) { var g = Graphics.FromImage(image); g.TextRenderingHint = TextRenderingHint.AntiAlias; g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.Half; g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; g.TextContrast = 1; return new SvgRenderer(g); } /// <summary> /// Creates a new <see cref="ISvgRenderer"/> from the specified <see cref="Graphics"/>. /// </summary> /// <param name="graphics">The <see cref="Graphics"/> to create the renderer from.</param> public static ISvgRenderer FromGraphics(Graphics graphics) { return new SvgRenderer(graphics); } public static ISvgRenderer FromNull() { var img = new Bitmap(1, 1); return SvgRenderer.FromImage(img); } } }