--- /dev/null
+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);
+ }
+ },
+ getText: function(){
+ // summary: returns the current text object or null
+ return this.text; // Object
+ },
+ 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
+ },
+ getFont: function(){
+ // summary: returns the current font object or null
+ return this.fontStyle; // Object
+ },
+ 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
+ }
+});
+
+}
projects / eow / blobdiff