GZ/nwyj/WebContent/admin/scripts/dojo/dojox/gfx/path.js

if (!dojo._hasResource["dojox.gfx.path"]) { // _hasResource checks added by
											// build. Do not use _hasResource
											// directly in your code.
	dojo._hasResource["dojox.gfx.path"] = true;
	dojo.provide("dojox.gfx.path");

	dojo.require("dojox.gfx.shape");

	dojo.declare("dojox.gfx.path.Path", dojox.gfx.Shape, {
				// summary: a generalized path shape

				constructor : function(rawNode) {
					// summary: a path constructor
					// rawNode: Node: a DOM node to be used by this path object
					this.shape = dojo.clone(dojox.gfx.defaultPath);
					this.segments = [];
					this.absolute = true;
					this.last = {};
					this.rawNode = rawNode;
				},

				// mode manipulations
				setAbsoluteMode : function(mode) {
					// summary: sets an absolute or relative mode for path
					// points
					// mode: Boolean: true/false or "absolute"/"relative" to
					// specify the mode
					this.absolute = typeof mode == "string"
							? (mode == "absolute")
							: mode;
					return this; // self
				},
				getAbsoluteMode : function() {
					// summary: returns a current value of the absolute mode
					return this.absolute; // Boolean
				},

				getBoundingBox : function() {
					// summary: returns the bounding box {x, y, width, height}
					// or null
					return (this.bbox && ("l" in this.bbox)) ? {
						x : this.bbox.l,
						y : this.bbox.t,
						width : this.bbox.r - this.bbox.l,
						height : this.bbox.b - this.bbox.t
					} : null; // dojox.gfx.Rectangle
				},

				getLastPosition : function() {
					// summary: returns the last point in the path, or null
					return "x" in this.last ? this.last : null; // Object
				},

				// segment interpretation
				_updateBBox : function(x, y) {
					// summary: updates the bounding box of path with new point
					// x: Number: an x coordinate
					// y: Number: a y coordinate

					// we use {l, b, r, t} representation of a bbox
					if (this.bbox && ("l" in this.bbox)) {
						if (this.bbox.l > x)
							this.bbox.l = x;
						if (this.bbox.r < x)
							this.bbox.r = x;
						if (this.bbox.t > y)
							this.bbox.t = y;
						if (this.bbox.b < y)
							this.bbox.b = y;
					} else {
						this.bbox = {
							l : x,
							b : y,
							r : x,
							t : y
						};
					}
				},
				_updateWithSegment : function(segment) {
					// summary: updates the bounding box of path with new
					// segment
					// segment: Object: a segment
					var n = segment.args, l = n.length;
					// update internal variables: bbox, absolute, last
					switch (segment.action) {
						case "M" :
						case "L" :
						case "C" :
						case "S" :
						case "Q" :
						case "T" :
							for (var i = 0; i < l; i += 2) {
								this._updateBBox(n[i], n[i + 1]);
							}
							this.last.x = n[l - 2];
							this.last.y = n[l - 1];
							this.absolute = true;
							break;
						case "H" :
							for (var i = 0; i < l; ++i) {
								this._updateBBox(n[i], this.last.y);
							}
							this.last.x = n[l - 1];
							this.absolute = true;
							break;
						case "V" :
							for (var i = 0; i < l; ++i) {
								this._updateBBox(this.last.x, n[i]);
							}
							this.last.y = n[l - 1];
							this.absolute = true;
							break;
						case "m" :
							var start = 0;
							if (!("x" in this.last)) {
								this._updateBBox(this.last.x = n[0],
										this.last.y = n[1]);
								start = 2;
							}
							for (var i = start; i < l; i += 2) {
								this._updateBBox(this.last.x += n[i],
										this.last.y += n[i + 1]);
							}
							this.absolute = false;
							break;
						case "l" :
						case "t" :
							for (var i = 0; i < l; i += 2) {
								this._updateBBox(this.last.x += n[i],
										this.last.y += n[i + 1]);
							}
							this.absolute = false;
							break;
						case "h" :
							for (var i = 0; i < l; ++i) {
								this._updateBBox(this.last.x += n[i],
										this.last.y);
							}
							this.absolute = false;
							break;
						case "v" :
							for (var i = 0; i < l; ++i) {
								this._updateBBox(this.last.x,
										this.last.y += n[i]);
							}
							this.absolute = false;
							break;
						case "c" :
							for (var i = 0; i < l; i += 6) {
								this._updateBBox(this.last.x + n[i],
										this.last.y + n[i + 1]);
								this._updateBBox(this.last.x + n[i + 2],
										this.last.y + n[i + 3]);
								this._updateBBox(this.last.x += n[i + 4],
										this.last.y += n[i + 5]);
							}
							this.absolute = false;
							break;
						case "s" :
						case "q" :
							for (var i = 0; i < l; i += 4) {
								this._updateBBox(this.last.x + n[i],
										this.last.y + n[i + 1]);
								this._updateBBox(this.last.x += n[i + 2],
										this.last.y += n[i + 3]);
							}
							this.absolute = false;
							break;
						case "A" :
							for (var i = 0; i < l; i += 7) {
								this._updateBBox(n[i + 5], n[i + 6]);
							}
							this.last.x = n[l - 2];
							this.last.y = n[l - 1];
							this.absolute = true;
							break;
						case "a" :
							for (var i = 0; i < l; i += 7) {
								this._updateBBox(this.last.x += n[i + 5],
										this.last.y += n[i + 6]);
							}
							this.absolute = false;
							break;
					}
					// add an SVG path segment
					var path = [segment.action];
					for (var i = 0; i < l; ++i) {
						path.push(dojox.gfx.formatNumber(n[i], true));
					}
					if (typeof this.shape.path == "string") {
						this.shape.path += path.join("");
					} else {
						var l = path.length, a = this.shape.path;
						for (var i = 0; i < l; ++i) {
							a.push(path[i]);
						}
					}
				},

				// a dictionary, which maps segment type codes to a number of
				// their argemnts
				_validSegments : {
					m : 2,
					l : 2,
					h : 1,
					v : 1,
					c : 6,
					s : 4,
					q : 4,
					t : 2,
					a : 7,
					z : 0
				},

				_pushSegment : function(action, args) {
					// summary: adds a segment
					// action: String: valid SVG code for a segment's type
					// args: Array: a list of parameters for this segment
					var group = this._validSegments[action.toLowerCase()];
					if (typeof group == "number") {
						if (group) {
							if (args.length >= group) {
								var segment = {
									action : action,
									args : args.slice(0, args.length
													- args.length % group)
								};
								this.segments.push(segment);
								this._updateWithSegment(segment);
							}
						} else {
							var segment = {
								action : action,
								args : []
							};
							this.segments.push(segment);
							this._updateWithSegment(segment);
						}
					}
				},

				_collectArgs : function(array, args) {
					// summary: converts an array of arguments to plain numeric
					// values
					// array: Array: an output argument (array of numbers)
					// args: Array: an input argument (can be values of Boolean,
					// Number, dojox.gfx.Point, or an embedded array of them)
					for (var i = 0; i < args.length; ++i) {
						var t = args[i];
						if (typeof t == "boolean") {
							array.push(t ? 1 : 0);
						} else if (typeof t == "number") {
							array.push(t);
						} else if (t instanceof Array) {
							this._collectArgs(array, t);
						} else if ("x" in t && "y" in t) {
							array.push(t.x, t.y);
						}
					}
				},

				// segments
				moveTo : function() {
					// summary: formes a move segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "M" : "m", args);
					return this; // self
				},
				lineTo : function() {
					// summary: formes a line segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "L" : "l", args);
					return this; // self
				},
				hLineTo : function() {
					// summary: formes a horizontal line segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "H" : "h", args);
					return this; // self
				},
				vLineTo : function() {
					// summary: formes a vertical line segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "V" : "v", args);
					return this; // self
				},
				curveTo : function() {
					// summary: formes a curve segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "C" : "c", args);
					return this; // self
				},
				smoothCurveTo : function() {
					// summary: formes a smooth curve segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "S" : "s", args);
					return this; // self
				},
				qCurveTo : function() {
					// summary: formes a quadratic curve segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "Q" : "q", args);
					return this; // self
				},
				qSmoothCurveTo : function() {
					// summary: formes a quadratic smooth curve segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "T" : "t", args);
					return this; // self
				},
				arcTo : function() {
					// summary: formes an elliptic arc segment
					var args = [];
					this._collectArgs(args, arguments);
					this._pushSegment(this.absolute ? "A" : "a", args);
					return this; // self
				},
				closePath : function() {
					// summary: closes a path
					this._pushSegment("Z", []);
					return this; // self
				},

				// setShape
				_setPath : function(path) {
					// summary: forms a path using an SVG path string
					// path: String: an SVG path string
					var p = dojo.isArray(path) ? path : path
							.match(dojox.gfx.pathSvgRegExp);
					this.segments = [];
					this.absolute = true;
					this.bbox = {};
					this.last = {};
					if (!p)
						return;
					// create segments
					var action = "", // current action
					args = [], // current arguments
					l = p.length;
					for (var i = 0; i < l; ++i) {
						var t = p[i], x = parseFloat(t);
						if (isNaN(x)) {
							if (action) {
								this._pushSegment(action, args);
							}
							args = [];
							action = t;
						} else {
							args.push(x);
						}
					}
					this._pushSegment(action, args);
				},
				setShape : function(newShape) {
					// summary: forms a path using a shape
					// newShape: Object: an SVG path string or a path object
					// (see dojox.gfx.defaultPath)
					dojox.gfx.Shape.prototype.setShape.call(this,
							typeof newShape == "string" ? {
								path : newShape
							} : newShape);
					var path = this.shape.path;
					// switch to non-updating version of path building
					this.shape.path = [];
					this._setPath(path);
					// switch back to the string path
					this.shape.path = this.shape.path.join("");
					return this; // self
				},

				// useful constant for descendants
				_2PI : Math.PI * 2
			});

	dojo.declare("dojox.gfx.path.TextPath", dojox.gfx.path.Path, {
				// summary: a generalized TextPath shape

				constructor : function(rawNode) {
					// summary: a TextPath shape constructor
					// rawNode: Node: a DOM node to be used by this TextPath
					// object
					if (!("text" in this)) {
						this.text = dojo.clone(dojox.gfx.defaultTextPath);
					}
					if (!("fontStyle" in this)) {
						this.fontStyle = dojo.clone(dojox.gfx.defaultFont);
					}
				},
				setText : function(newText) {
					// summary: sets a text to be drawn along the path
					this.text = dojox.gfx.makeParameters(this.text,
							typeof newText == "string" ? {
								text : newText
							} : newText);
					this._setText();
					return this; // self
				},
				setFont : function(newFont) {
					// summary: sets a font for text
					this.fontStyle = typeof newFont == "string" ? dojox.gfx
							.splitFontString(newFont) : dojox.gfx
							.makeParameters(dojox.gfx.defaultFont, newFont);
					this._setFont();
					return this; // self
				}
			});

}