Exemplo n.º 1
0
 public static void DrawLine(this ICanvas canvas, double x1, double y1, double x2, double y2, Color color, double width = 1.0)
 {
     var p = new Path { Pen = new Pen (color, width) };
     p.MoveTo (x1, y1);
     p.LineTo (x2, y2);
     p.Draw (canvas);
 }
Exemplo n.º 2
0
 public static void DrawLine(this ICanvas canvas, Point start, Point end, Color color, double width = 1.0)
 {
     var p = new Path { Pen = new Pen (color, width) };
     p.MoveTo (start);
     p.LineTo (end);
     p.Draw (canvas);
 }
Exemplo n.º 3
0
 public static void DrawLine(this ICanvas canvas, Point start, Point end, Pen pen)
 {
     var p = new Path { Pen = pen };
     p.MoveTo (start);
     p.LineTo (end);
     p.Draw (canvas);
 }
Exemplo n.º 4
0
		public override Element TransformGeometry (Transform transform)
		{
			var p = new Path ();
			base.SetCloneData (p);
			p.Transform = Transform.Identity;
			p.MoveTo (frame.TopLeft);
			p.LineTo (frame.BottomLeft);
			p.LineTo (frame.BottomRight);
			p.LineTo (frame.TopRight);
			p.Close ();
			var tp = p.TransformGeometry (transform * Transform);
			return tp;
		}
Exemplo n.º 5
0
		void AddElement (IList<Element> list, XElement e, Pen inheritPen, Brush inheritBrush)
		{
			//
			// Style
			//
			Element r = null;
            Style eStyle = new Style();
			ApplyStyle (e.Attributes ().ToDictionary (k => k.Name.LocalName, v => v.Value), eStyle);
			var style = ReadString (e.Attribute ("style"));
			if (!string.IsNullOrWhiteSpace (style)) {
				ApplyStyle (style, eStyle);
			}
            if (!eStyle.hasPen) eStyle.pen = inheritPen;
            if (!eStyle.hasBrush) eStyle.brush = inheritBrush;
            //var id = ReadString (e.Attribute ("id"));

            //
            // Elements
            //
            switch (e.Name.LocalName) {
			case "text":
				{
					var x = ReadNumber (e.Attribute ("x"));
					var y = ReadNumber (e.Attribute ("y"));
					var font = new Font ();
					var fontFamily = ReadTextFontFamily(e);
					if (!string.IsNullOrEmpty(fontFamily))
						font.Family = fontFamily;
					var fontSize = ReadTextFontSize(e);
					if (fontSize >= 0)
						font.Size = fontSize;
					TextAlignment textAlignment = ReadTextAlignment(e);
					var txt = new Text (new Rect (new Point (x, y), new Size (double.MaxValue, double.MaxValue)), font, textAlignment, eStyle.pen, eStyle.brush);
					ReadTextSpans (txt, e);
					r = txt;
				}
				break;
			case "rect":
				{
					var x = ReadNumber (e.Attribute ("x"));
					var y = ReadNumber (e.Attribute ("y"));
					var width = ReadNumber (e.Attribute ("width"));
					var height = ReadNumber (e.Attribute ("height"));
					var rx = ReadNumber (e.Attribute ("rx"));
					var ry = ReadNumber (e.Attribute ("ry"));
					if (ry == 0) {
						ry = rx;
					}
					r = new Rectangle (new Rect (new Point (x, y), new Size (width, height)), new Size (rx, ry), eStyle.pen, eStyle.brush);
				}
				break;
			case "ellipse":
				{
					var cx = ReadNumber (e.Attribute ("cx"));
					var cy = ReadNumber (e.Attribute ("cy"));
					var rx = ReadNumber (e.Attribute ("rx"));
					var ry = ReadNumber (e.Attribute ("ry"));
					r = new Ellipse (new Point (cx - rx, cy - ry), new Size (2 * rx, 2 * ry), eStyle.pen, eStyle.brush);
				}
				break;
			case "circle":
				{
					var cx = ReadNumber (e.Attribute ("cx"));
					var cy = ReadNumber (e.Attribute ("cy"));
					var rr = ReadNumber (e.Attribute ("r"));
					r = new Ellipse (new Point (cx - rr, cy - rr), new Size (2 * rr, 2 * rr), eStyle.pen, eStyle.brush);
				}
				break;

			case "path":
				{
					var dA = e.Attribute ("d");
					if (dA != null && !string.IsNullOrWhiteSpace (dA.Value)) {
						var p = new Path (eStyle.pen, eStyle.brush);
						ReadPath (p, dA.Value);
						r = p;
					}
				}
				break;
			case "polygon":
				{
					var pA = e.Attribute ("points");
					if (pA != null && !string.IsNullOrWhiteSpace (pA.Value)) {
						var path = new Path (eStyle.pen, eStyle.brush);
						ReadPoints (path, pA.Value, true);
						r = path;
					}
				}
				break;
			case "polyline":
				{
					var pA = e.Attribute ("points");
					if (pA != null && !string.IsNullOrWhiteSpace (pA.Value)) {
						var path = new Path (eStyle.pen, eStyle.brush);
						ReadPoints (path, pA.Value, false);
						r = path;
					}
				}
			break;
			case "g":
				{
					var g = new Group ();
					var groupId = e.Attribute("id");
					if (groupId != null && !string.IsNullOrEmpty(groupId.Value))
						g.Id = groupId.Value;
					AddElements (g.Children, e.Elements (), eStyle.pen, eStyle.brush);
					r = g;
				}
				break;
			case "use":
				{
					var href = ReadString (e.Attributes ().FirstOrDefault (x => x.Name.LocalName == "href"));
					if (!string.IsNullOrWhiteSpace (href)) {
						XElement useE;
						if (defs.TryGetValue (href.Trim ().Replace ("#", ""), out useE)) {
							var useList = new List<Element> ();
							AddElement (useList, useE, eStyle.pen, eStyle.brush);
							r = useList.FirstOrDefault ();
						}
					}
				}
				break;
			case "title":
				Graphic.Title = ReadString (e);
				break;
			case "desc":
			case "description":
				Graphic.Description = ReadString (e);
				break;
			case "defs":
				// Already read in earlier pass
				break;
			case "namedview":
			case "metadata":
			case "image":
				// Ignore
				break;

				case "line":
				{
					var x1 = ReadNumber ( e.Attribute("x1") );
					var x2 = ReadNumber ( e.Attribute("x2") );
					var y1 = ReadNumber ( e.Attribute("y1") );
					var y2 = ReadNumber ( e.Attribute("y2") );
					var p = new Path (eStyle.pen, null);
					p.MoveTo (x1, y1);
					p.LineTo (x2, y2);
					r = p;
				}
				break;

				case "foreignObject":
				{
					var x = ReadNumber ( e.Attribute("x") );
					var y = ReadNumber ( e.Attribute("y") );
					var width = ReadNumber ( e.Attribute("width") );
					var height = ReadNumber ( e.Attribute("height") );
					r = new ForeignObject(new Point(x, y), new Size(width, height));
				}
				break;

				case "pgf":
				{
					var id = e.Attribute("id");
					System.Diagnostics.Debug.WriteLine("Ignoring pgf element" + (id != null ? ": '" + id.Value + "'" : ""));
				}
				break;

				case "switch":
				{
					// Evaluate requiredFeatures, requiredExtensions and systemLanguage
					foreach (var ee in e.Elements())
					{
						var requiredFeatures = ee.Attribute("requiredFeatures");
						var requiredExtensions = ee.Attribute("requiredExtensions");
						var systemLanguage = ee.Attribute("systemLanguage");
						// currently no support for any of these restrictions
						if (requiredFeatures == null && requiredExtensions == null && systemLanguage == null)
							AddElement (list, ee, eStyle.pen, eStyle.brush);
					}
				}
				break;


				// color definition that can be referred to by other elements
				case "linearGradient":
				break;


			default:
				throw new NotSupportedException ("SVG element \"" + e.Name.LocalName + "\" is not supported");
			}

			if (r != null) {
                eStyle.Apply(r);
				r.Transform = ReadTransform (ReadString (e.Attribute ("transform")));
				var ida = e.Attribute("id");
				if (ida != null && !string.IsNullOrEmpty (ida.Value)) {
					r.Id = ida.Value.Trim ();
				}
				list.Add (r);
			}
		}
Exemplo n.º 6
0
		void ReadPoints (Path p, string pathDescriptor, bool closePath)
		{
			var args = pathDescriptor.Split (new[]{' '}, StringSplitOptions.RemoveEmptyEntries);

			var i = 0;
			var n = args.Length;
			if (n == 0)
				throw new Exception ("No points specified");
			while (i < n) {
				var xy = args[i].Split(new[]{','}, StringSplitOptions.RemoveEmptyEntries);
				var x = 0.0;
				var y = 0.0;
				var di = 1;
				if (xy.Length == 1) {
					x = ReadNumber (args [i]);
					y = ReadNumber (args [i + 1]);
					di = 2;
				}
				else {
					x = ReadNumber (xy[0]);
					y = ReadNumber (xy[1]);
				}

				if (i == 0) {
					p.MoveTo (x, y);
				} else {
					p.LineTo (x, y);
				}
				i += di;
			}
			if (closePath)
				p.Close ();
		}
Exemplo n.º 7
0
		void ReadPath (Path p, string pathDescriptor)
		{
			Match m = pathRegex.Match(pathDescriptor);
			while(m.Success)
			{
				var match = m.Value.TrimStart ();
				var op = match[0];

				if (op == 'z' || op == 'Z') {
					p.Close ();
				} else {
					// make sure negative numbers are split properly
					match = negativeNumberRe.Replace(match.Substring(1), " -");
					var args = match.Split(WSC, StringSplitOptions.RemoveEmptyEntries);

					Point previousPoint = new Point ();
					int index = 0;
					while(index < args.Length)
					{
						if (p.Operations.Count > 0 && !(p.Operations.Last() is ClosePath))
							previousPoint = p.Operations.Last().EndPoint;

						if ((op == 'M' || op == 'm') && args.Length >= index+2) {
							var point = new Point (ReadNumber (args [index]), ReadNumber (args [index+1]));
							if (op == 'm')
								point += previousPoint;
							p.MoveTo (point);
							index += 2;
						} else if ((op == 'L' || op == 'l') && args.Length >= index+2) {
							var point = new Point (ReadNumber (args [index]), ReadNumber (args [index+1]));
							if (op == 'l')
								point += previousPoint;
							p.LineTo (point);
							index += 2;
						} else if ((op == 'C' || op == 'c') && args.Length >= index+6) {
							var c1 = new Point (ReadNumber (args [index]), ReadNumber (args [index+1]));
							var c2 = new Point (ReadNumber (args [index+2]), ReadNumber (args [index+3]));
							var pt = new Point (ReadNumber (args [index+4]), ReadNumber (args [index+5]));
							if (op == 'c')
							{
								c1 += previousPoint;
								c2 += previousPoint;
								pt += previousPoint;
							}
							p.CurveTo (c1, c2, pt);
							index += 6;
						} else if ((op == 'S' || op == 's') && args.Length >= index+4) {
							var c  = new Point (ReadNumber (args [index]), ReadNumber (args [index+1]));
							var pt = new Point (ReadNumber (args [index+2]), ReadNumber (args [index+3]));
							if (op == 's')
							{
								c += previousPoint;
								pt += previousPoint;
							}
							p.ContinueCurveTo (c, pt);
							index += 4;
						} else if ((op == 'A' || op == 'a') && args.Length >= index+7) {
							var r = new Size (ReadNumber (args [index]), ReadNumber (args [index+1]));
	//                                     var xr = ReadNumber (args [i + 2]);
							var laf = ReadNumber (args [index+3]) != 0;
							var swf = ReadNumber (args [index+4]) != 0;
							var pt = new Point (ReadNumber (args [index+5]), ReadNumber (args [index+6]));
							if (op == 'a')
								pt += previousPoint;
							p.ArcTo (r, laf, swf, pt);
							index += 7;
						} else if ((op == 'V' || op == 'v') && args.Length >= index+1 && p.Operations.Count > 0) {
							var previousX = previousPoint.X;
							var y = ReadNumber(args[index]);
							if (op == 'v')
								y += previousPoint.Y;
							var point = new Point(previousX, y);
							p.LineTo(point);
							index += 1;
						} else if ((op == 'H' || op == 'h') && args.Length >= index+1 && p.Operations.Count > 0) {
							var previousY = previousPoint.Y;
							var x = ReadNumber(args[index]);
							if (op == 'h')
								x += previousPoint.X;
							var point = new Point(x, previousY);
							p.LineTo(point);
							index += 1;
						} else {
							throw new NotSupportedException ("Path Operation " + op);
						}
					}
				}
				m = m.NextMatch();
			}
		}
Exemplo n.º 8
0
        void ReadPoints(Path p, string pathDescriptor, bool closePath)
        {
            var args = pathDescriptor.Split (new[]{' '}, StringSplitOptions.RemoveEmptyEntries);

            var i = 0;
            var n = args.Length;
            if (n == 0)
                throw new Exception ("Not supported point");
            while (i < n) {
                var xy = args[i].Split(new[]{','}, StringSplitOptions.RemoveEmptyEntries);
                var x = ReadNumber (xy[0]);
                var y = ReadNumber (xy[1]);

                if (i == 0) {
                    p.MoveTo (x, y);
                } else
                    p.LineTo (x, y);
                i++;
            }
            if (closePath)
                p.Close ();
        }
Exemplo n.º 9
0
        void ReadPath(Path p, string pathDescriptor)
        {
            Match m = pathRegex.Match(pathDescriptor);
            while(m.Success)
            {
                var match = m.Value.Trim();
                var op = match.Substring(0, 1);
                // make sure negative numbers are split properly
                match = match.Replace("-", " -");
                var args = match.Substring(1).Split(WSC, StringSplitOptions.RemoveEmptyEntries);

                Point previousPoint = new Point ();
                if (p.Operations.Count > 0 && !(p.Operations.Last() is ClosePath))
                    previousPoint = p.Operations.Last().EndPoint;

                if ((op == "M" || op == "m") && args.Length >= 2) {
                    var point = new Point (ReadNumber (args [0]), ReadNumber (args [1]));
                    if (op == "m")
                        point += previousPoint;
                    p.MoveTo (point);
                } else if ((op == "L" || op == "l") && args.Length >= 2) {
                    var point = new Point (ReadNumber (args [0]), ReadNumber (args [1]));
                    if (op == "l")
                        point += previousPoint;
                    p.LineTo (point);
                } else if ((op == "C" || op == "c") && args.Length >= 6) {
                    var c1 = new Point (ReadNumber (args [0]), ReadNumber (args [1]));
                    var c2 = new Point (ReadNumber (args [2]), ReadNumber (args [3]));
                    var pt = new Point (ReadNumber (args [4]), ReadNumber (args [5]));
                    if (op == "c")
                    {
                        c1 += previousPoint;
                        c2 += previousPoint;
                        pt += previousPoint;
                    }
                    p.CurveTo (c1, c2, pt);
                } else if ((op == "S" || op == "s") && args.Length >= 4) {
                    var c  = new Point (ReadNumber (args [0]), ReadNumber (args [1]));
                    var pt = new Point (ReadNumber (args [2]), ReadNumber (args [3]));
                    if (op == "s")
                    {
                        c += previousPoint;
                        pt += previousPoint;
                    }
                    p.ContinueCurveTo (c, pt);
                } else if ((op == "A" || op == "a") && args.Length >= 7) {
                    var r = new Size (ReadNumber (args [0]), ReadNumber (args [1]));
            //                                     var xr = ReadNumber (args [i + 2]);
                    var laf = ReadNumber (args [3]) != 0;
                    var swf = ReadNumber (args [4]) != 0;
                    var pt = new Point (ReadNumber (args [5]), ReadNumber (args [6]));
                    if (op == "a")
                        pt += previousPoint;
                    p.ArcTo (r, laf, swf, pt);
                } else if ((op == "V" || op == "v") && args.Length >= 1 && p.Operations.Count > 0) {
                    var previousX = previousPoint.X;
                    var y = ReadNumber(args[0]);
                    if (op == "v")
                        y += previousPoint.Y;
                    var point = new Point(previousX, y);
                    p.LineTo(point);
                } else if ((op == "H" || op == "h") && args.Length >= 1 && p.Operations.Count > 0) {
                    var previousY = previousPoint.Y;
                    var x = ReadNumber(args[0]);
                    if (op == "h")
                        x += previousPoint.X;
                    var point = new Point(x, previousY);
                    p.LineTo(point);
                } else if (op == "z" || op == "Z") {
                    p.Close ();
                } else {
                    throw new NotSupportedException ("Path Operation " + op);
                }
                m = m.NextMatch();
            }
        }
        void ReadPolygon(Path p, string pathDescriptor)
        {
            var args = pathDescriptor.Split (new[]{' '}, StringSplitOptions.RemoveEmptyEntries);

            var i = 0;
            var n = args.Length;
            if (n == 0)
                throw new Exception ("Not supported polygon");
            while (i < n) {
                var x = ReadNumber (args [i]);
                var y = ReadNumber (args [i + 1]);

                if (i == 0) {
                    p.MoveTo (x, y);
                } else
                    p.LineTo (x, y);
                i += 2;

            }
            p.Close ();
        }
        void AddElement(IList<IDrawable> list, XElement e, Pen inheritPen, Brush inheritBrush)
        {
            //
            // Style
            //
            Element r = null;
            Pen pen = null;
            Brush brush = null;
            bool hasPen, hasBrush;
            ApplyStyle (e.Attributes ().ToDictionary (k => k.Name.LocalName, v => v.Value), ref pen, out hasPen, ref brush, out hasBrush);
            var style = ReadString (e.Attribute ("style"));
            if (!string.IsNullOrWhiteSpace (style)) {
                ApplyStyle (style, ref pen, out hasPen, ref brush, out hasBrush);
            }
            pen = hasPen ? pen : inheritPen;
            brush = hasBrush ? brush : inheritBrush;
            //var id = ReadString (e.Attribute ("id"));

            //
            // Elements
            //
            switch (e.Name.LocalName) {
            case "text":
                {
                    var x = ReadNumber (e.Attribute ("x"));
                    var y = ReadNumber (e.Attribute ("y"));
                    var text = e.Value.Trim ();
                    var fontFamilyAttribute = e.Attribute("font-family");
                    var font = new Font ();
                    //if (fontFamilyAttribute != null)
                    //	font.Family = fontFamilyAttribute.Value.Trim('\'');
                    var fontSizeAttribute = e.Attribute("font-size");
                    if (fontSizeAttribute != null)
                        font.Size = ReadNumber(fontSizeAttribute.Value);
                    r = new Text (text, new Rect (new Point (x, y), new Size (double.MaxValue, double.MaxValue)), font, TextAlignment.Left, pen, brush);
                }
                break;
            case "rect":
                {
                    var x = ReadNumber (e.Attribute ("x"));
                    var y = ReadNumber (e.Attribute ("y"));
                    var width = ReadNumber (e.Attribute ("width"));
                    var height = ReadNumber (e.Attribute ("height"));
                    r = new Rectangle (new Point (x, y), new Size (width, height), pen, brush);
                }
                break;
            case "ellipse":
                {
                    var cx = ReadNumber (e.Attribute ("cx"));
                    var cy = ReadNumber (e.Attribute ("cy"));
                    var rx = ReadNumber (e.Attribute ("rx"));
                    var ry = ReadNumber (e.Attribute ("ry"));
                    r = new Ellipse (new Point (cx - rx, cy - ry), new Size (2 * rx, 2 * ry), pen, brush);
                }
                break;
            case "circle":
                {
                    var cx = ReadNumber (e.Attribute ("cx"));
                    var cy = ReadNumber (e.Attribute ("cy"));
                    var rr = ReadNumber (e.Attribute ("r"));
                    r = new Ellipse (new Point (cx - rr, cy - rr), new Size (2 * rr, 2 * rr), pen, brush);
                }
                break;
            case "path":
                {
                    var dA = e.Attribute ("d");
                    if (dA != null && !string.IsNullOrWhiteSpace (dA.Value)) {
                        var p = new Path (pen, brush);
                        ReadPath (p, dA.Value);
                        r = p;
                    }
                }
                break;
            case "polygon":
                {
                    var pA = e.Attribute ("points");
                    if (pA != null && !string.IsNullOrWhiteSpace (pA.Value)) {
                        var path = new Path (pen, brush);
                        ReadPolygon (path, pA.Value);
                        r = path;
                    }
                }
                break;
            case "g":
                {
                    var g = new Group ();
                    AddElements (g.Children, e.Elements (), pen, brush);
                    r = g;
                }
                break;
            case "use":
                {
                    var href = ReadString (e.Attributes ().FirstOrDefault (x => x.Name.LocalName == "href"));
                    if (!string.IsNullOrWhiteSpace (href)) {
                        XElement useE;
                        if (defs.TryGetValue (href.Trim ().Replace ("#", ""), out useE)) {
                            var useList = new List<IDrawable> ();
                            AddElement (useList, useE, pen, brush);
                            r = useList.OfType<Element> ().FirstOrDefault ();
                        }
                    }
                }
                break;
            case "title":
                Graphic.Title = ReadString (e);
                break;
            case "desc":
            case "description":
                Graphic.Description = ReadString (e);
                break;
            case "defs":
                // Already read in earlier pass
                break;
            case "namedview":
            case "metadata":
            case "image":
                // Ignore
                break;

                case "line":
                {
                    var x1 = ReadNumber ( e.Attribute("x1") );
                    var x2 = ReadNumber ( e.Attribute("x2") );
                    var y1 = ReadNumber ( e.Attribute("y1") );
                    var y2 = ReadNumber ( e.Attribute("y2") );
                    r = new Line(new Point(x1, y1), new Point(x2, y2), pen);
                }
                break;

                // color definition that can be referred to by other elements
                case "linearGradient":
                break;

            default:
                throw new NotSupportedException ("SVG element \"" + e.Name.LocalName + "\" is not supported");
            }

            if (r != null) {
                r.Transform = ReadTransform (ReadString (e.Attribute ("transform")));
                list.Add (r);
            }
        }
        void ReadPath(Path p, string pathDescriptor)
        {
            var args = pathDescriptor.Split (WSC, StringSplitOptions.RemoveEmptyEntries);

            var i = 0;
            var n = args.Length;

            while (i < n) {
                var a = args[i];
                //
                // Get the operation
                //
                var op = "";
                if (a.Length == 1) {
                    op = a;
                    i++;
                } else {
                    op = a.Substring (0, 1);
                    args [i] = a.Substring (1);
                }

                //
                // Execute
                //
                if (op == "M" && i + 1 < n) {
                    p.MoveTo (new Point (ReadNumber (args [i]), ReadNumber (args [i + 1])));
                    i += 2;
                } else if (op == "L" && i + 1 < n) {
                    p.LineTo (new Point (ReadNumber (args [i]), ReadNumber (args [i + 1])));
                    i += 2;
                } else if (op == "C" && i + 5 < n) {
                    var c1 = new Point (ReadNumber (args [i]), ReadNumber (args [i + 1]));
                    var c2 = new Point (ReadNumber (args [i + 2]), ReadNumber (args [i + 3]));
                    var pt = new Point (ReadNumber (args [i + 4]), ReadNumber (args [i + 5]));
                    p.CurveTo (c1, c2, pt);
                    i += 6;
                } else if (op == "S" && i + 3 < n) {
                    var c  = new Point (ReadNumber (args [i]), ReadNumber (args [i + 1]));
                    var pt = new Point (ReadNumber (args [i + 2]), ReadNumber (args [i + 3]));
                    p.ContinueCurveTo (c, pt);
                    i += 4;
                } else if (op == "A" && i + 6 < n) {
                    var r = new Size (ReadNumber (args [i]), ReadNumber (args [i + 1]));
            //					var xr = ReadNumber (args [i + 2]);
                    var laf = ReadNumber (args [i + 3]) != 0;
                    var swf = ReadNumber (args [i + 4]) != 0;
                    var pt = new Point (ReadNumber (args [i + 5]), ReadNumber (args [i + 6]));
                    p.ArcTo (r, laf, swf, pt);
                    i += 7;
                } else if (op == "z" || op == "Z") {
                    p.Close ();
                } else {
                    throw new NotSupportedException ("Path Operation " + op);
                }
            }
        }
Exemplo n.º 13
0
 public static void DrawPath(this ICanvas canvas, Action<Path> draw, Pen pen = null, Brush brush = null)
 {
     var p = new Path (pen, brush);
     draw (p);
     p.Draw (canvas);
 }
Exemplo n.º 14
0
 public static void FillPath(this ICanvas canvas, Action<Path> draw, Brush brush)
 {
     var p = new Path (null, brush);
     draw (p);
     p.Draw (canvas);
 }
Exemplo n.º 15
0
		public virtual void EndVisit (Path path)
		{
			EndVisitElement (path);
		}