Subversion Repositories Applications.papyrus

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

dojo.require("dojox.gfx._base");
dojo.require("dojox.gfx.shape");
dojo.require("dojox.gfx.path");
dojo.require("dojox.gfx.arc");

// dojox.gfx.vml.xmlns: String: a VML's namespace
dojox.gfx.vml.xmlns = "urn:schemas-microsoft-com:vml";

// dojox.gfx.vml.text_alignment: Object: mapping from SVG alignment to VML alignment
dojox.gfx.vml.text_alignment = {start: "left", middle: "center", end: "right"};

dojox.gfx.vml._parseFloat = function(str) {
        // summary: a helper function to parse VML-specific floating-point values
        // str: String: a representation of a floating-point number
        return str.match(/^\d+f$/i) ? parseInt(str) / 65536 : parseFloat(str);  // Number
};

dojox.gfx.vml._bool = {"t": 1, "true": 1};

dojo.extend(dojox.gfx.Shape, {
        // summary: VML-specific implementation of dojox.gfx.Shape methods

        setFill: function(fill){
                // summary: sets a fill object (VML)
                // fill: Object: a fill object
                //      (see dojox.gfx.defaultLinearGradient, 
                //      dojox.gfx.defaultRadialGradient, 
                //      dojox.gfx.defaultPattern, 
                //      or dojo.Color)

                if(!fill){
                        // don't fill
                        this.fillStyle = null;
                        this.rawNode.filled = "f";
                        return this;
                }
                if(typeof fill == "object" && "type" in fill){
                        // gradient
                        switch(fill.type){
                                case "linear":
                                        var f = dojox.gfx.makeParameters(dojox.gfx.defaultLinearGradient, fill),
                                                s = [], a = f.colors, matrix = this._getRealMatrix(), m = dojox.gfx.matrix;
                                        this.fillStyle = f;
                                        dojo.forEach(a, function(v, i, a){
                                                a[i].color = dojox.gfx.normalizeColor(v.color);
                                        });
                                        if(a[0].offset > 0){
                                                s.push("0 " + a[0].color.toHex());
                                        }
                                        for(var i = 0; i < a.length; ++i){
                                                s.push(a[i].offset.toFixed(8) + " " + a[i].color.toHex());
                                        }
                                        var i = a.length - 1;
                                        if(a[i].offset < 1){
                                                s.push("1 " + a[i].color.toHex());
                                        }
                                        var fo = this.rawNode.fill;
                                        fo.colors.value = s.join(";");
                                        fo.method = "sigma";
                                        fo.type = "gradient";
                                        var fc1 = matrix ? m.multiplyPoint(matrix, f.x1, f.y1) : {x: f.x1, y: f.y1},
                                                fc2 = matrix ? m.multiplyPoint(matrix, f.x2, f.y2) : {x: f.x2, y: f.y2};
                                        fo.angle = (m._radToDeg(Math.atan2(fc2.x - fc1.x, fc2.y - fc1.y)) + 180) % 360;
                                        fo.on = true;
                                        break;
                                case "radial":
                                        var f = dojox.gfx.makeParameters(dojox.gfx.defaultRadialGradient, fill);
                                        this.fillStyle = f;
                                        var l = parseFloat(this.rawNode.style.left),
                                                t = parseFloat(this.rawNode.style.top),
                                                w = parseFloat(this.rawNode.style.width),
                                                h = parseFloat(this.rawNode.style.height),
                                                c = isNaN(w) ? 1 : 2 * f.r / w,
                                                a = new Array(f.colors.length);
                                        // massage colors
                                        dojo.forEach(f.colors, function(v, i){
                                                a[i] = {offset: 1 - v.offset * c, color: dojox.gfx.normalizeColor(v.color)};
                                        });
                                        var i = a.length - 1;
                                        while(i >= 0 && a[i].offset < 0){ --i; }
                                        if(i < a.length - 1){
                                                // correct excessive colors
                                                var q = a[i], p = a[i + 1];
                                                p.color = dojo.blendColors(q.color, p.color, q.offset / (q.offset - p.offset));
                                                p.offset = 0;
                                                while(a.length - i > 2) a.pop();
                                        }
                                        // set colors
                                        var i = a.length - 1, s = [];
                                        if(a[i].offset > 0){
                                                s.push("0 " + a[i].color.toHex());
                                        }
                                        for(; i >= 0; --i){
                                                s.push(a[i].offset.toFixed(8) + " " + a[i].color.toHex());
                                        }
                                        if(a[0].offset < 1){
                                                s.push("1 " + a[0].color.toHex());
                                        }
                                        var fo = this.rawNode.fill;
                                        fo.colors.value = s.join(";");
                                        fo.method = "sigma";
                                        fo.type = "gradientradial";
                                        if(isNaN(w) || isNaN(h) || isNaN(l) || isNaN(t)){
                                                fo.focusposition = "0.5 0.5";
                                        }else{
                                                fo.focusposition = ((f.cx - l) / w).toFixed(8) + " " + ((f.cy - t) / h).toFixed(8);
                                        }
                                        fo.focussize = "0 0";
                                        fo.on = true;
                                        break;
                                case "pattern":
                                        var f = dojox.gfx.makeParameters(dojox.gfx.defaultPattern, fill);
                                        this.fillStyle = f;
                                        var fo = this.rawNode.fill;
                                        fo.type = "tile";
                                        fo.src = f.src;
                                        if(f.width && f.height){
                                                // in points
                                                fo.size.x = dojox.gfx.px2pt(f.width);
                                                fo.size.y = dojox.gfx.px2pt(f.height);
                                        }
                                        fo.alignShape = "f";
                                        fo.position.x = 0;
                                        fo.position.y = 0;
                                        fo.origin.x = f.width  ? f.x / f.width  : 0;
                                        fo.origin.y = f.height ? f.y / f.height : 0;
                                        fo.on = true;
                                        break;
                        }
                        this.rawNode.fill.opacity = 1;
                        return this;
                }
                // color object
                this.fillStyle = dojox.gfx.normalizeColor(fill);
                this.rawNode.fillcolor = this.fillStyle.toHex();
                this.rawNode.fill.opacity = this.fillStyle.a;
                this.rawNode.filled = true;
                return this;    // self
        },

        setStroke: function(stroke){
                // summary: sets a stroke object (VML)
                // stroke: Object: a stroke object
                //      (see dojox.gfx.defaultStroke) 
        
                if(!stroke){
                        // don't stroke
                        this.strokeStyle = null;
                        this.rawNode.stroked = "f";
                        return this;
                }
                // normalize the stroke
                if(typeof stroke == "string"){
                        stroke = {color: stroke};
                }
                var s = this.strokeStyle = dojox.gfx.makeParameters(dojox.gfx.defaultStroke, stroke);
                s.color = dojox.gfx.normalizeColor(s.color);
                // generate attributes
                var rn = this.rawNode;
                rn.stroked = true;
                rn.strokecolor = s.color.toCss();
                rn.strokeweight = s.width + "px";       // TODO: should we assume that the width is always in pixels?
                if(rn.stroke) {
                        rn.stroke.opacity = s.color.a;
                        rn.stroke.endcap = this._translate(this._capMap, s.cap);
                        if(typeof s.join == "number") {
                                rn.stroke.joinstyle = "miter";
                                rn.stroke.miterlimit = s.join;
                        }else{
                                rn.stroke.joinstyle = s.join;
                                // rn.stroke.miterlimit = s.width;
                        }
                        rn.stroke.dashstyle = s.style == "none" ? "Solid" : s.style;
                }
                return this;    // self
        },
        
        _capMap: { butt: 'flat' },
        _capMapReversed: { flat: 'butt' },
        
        _translate: function(dict, value) {
                return (value in dict) ? dict[value] : value;
        },
        
        _applyTransform: function() {
                if(this.fillStyle && this.fillStyle.type == "linear"){
                        this.setFill(this.fillStyle);
                }
                var matrix = this._getRealMatrix();
                if(!matrix) return this;
                var skew = this.rawNode.skew;
                if(typeof skew == "undefined"){
                        for(var i = 0; i < this.rawNode.childNodes.length; ++i){
                                if(this.rawNode.childNodes[i].tagName == "skew"){
                                        skew = this.rawNode.childNodes[i];
                                        break;
                                }
                        }
                }
                if(skew){
                        skew.on = "f";
                        var mt = matrix.xx.toFixed(8) + " " + matrix.xy.toFixed(8) + " " + 
                                matrix.yx.toFixed(8) + " " + matrix.yy.toFixed(8) + " 0 0",
                                offset = Math.floor(matrix.dx).toFixed() + "px " + Math.floor(matrix.dy).toFixed() + "px",
                                s = this.rawNode.style,
                                l = parseFloat(s.left),
                                t = parseFloat(s.top),
                                w = parseFloat(s.width),
                                h = parseFloat(s.height);
                        if(isNaN(l)) l = 0;
                        if(isNaN(t)) t = 0;
                        if(isNaN(w)) w = 1;
                        if(isNaN(h)) h = 1;
                        var origin = (-l / w - 0.5).toFixed(8) + " " + (-t / h - 0.5).toFixed(8);
                        skew.matrix =  mt;
                        skew.origin = origin;
                        skew.offset = offset;
                        skew.on = true;
                }
                return this;
        },

        setRawNode: function(rawNode){
                // summary:
                //      assigns and clears the underlying node that will represent this
                //      shape. Once set, transforms, gradients, etc, can be applied.
                //      (no fill & stroke by default)
                rawNode.stroked = "f";
                rawNode.filled  = "f";
                this.rawNode = rawNode;
        },
        
        // move family

        _moveToFront: function(){
                // summary: moves a shape to front of its parent's list of shapes (VML)
                this.rawNode.parentNode.appendChild(this.rawNode);
                return this;
        },
        _moveToBack: function(){
                // summary: moves a shape to back of its parent's list of shapes (VML)
                var r = this.rawNode, p = r.parentNode, n = p.firstChild;
                p.insertBefore(r, n);
                if(n.tagName == "rect"){
                        // surface has a background rectangle, which position should be preserved
                        n.swapNode(r);
                }
                return this;
        },

        _getRealMatrix: function(){
                // summary: returns the cumulative ("real") transformation matrix
                //      by combining the shape's matrix with its parent's matrix
                return this.parentMatrix ? new dojox.gfx.Matrix2D([this.parentMatrix, this.matrix]) : this.matrix;      // dojox.gfx.Matrix2D
        }
});

dojo.declare("dojox.gfx.Group", dojox.gfx.Shape, {
        // summary: a group shape (VML), which can be used 
        //      to logically group shapes (e.g, to propagate matricies)
        constructor: function(){
                dojox.gfx.vml.Container._init.call(this);
        },
        // apply transformation
        _applyTransform: function(){
                // summary: applies a transformation matrix to a group
                var matrix = this._getRealMatrix();
                for(var i = 0; i < this.children.length; ++i){
                        this.children[i]._updateParentMatrix(matrix);
                }
                return this;    // self
        }
});
dojox.gfx.Group.nodeType = "group";

dojo.declare("dojox.gfx.Rect", dojox.gfx.shape.Rect, {
        // summary: a rectangle shape (VML)
        setShape: function(newShape){
                // summary: sets a rectangle shape object (VML)
                // newShape: Object: a rectangle shape object
                var shape = this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                var style = this.rawNode.style;
                style.left   = shape.x.toFixed();
                style.top    = shape.y.toFixed();
                style.width  = (typeof shape.width == "string" && shape.width.indexOf("%") >= 0)  ? shape.width  : shape.width.toFixed();
                style.height = (typeof shape.width == "string" && shape.height.indexOf("%") >= 0) ? shape.height : shape.height.toFixed();
                var r = Math.min(1, (shape.r / Math.min(parseFloat(shape.width), parseFloat(shape.height)))).toFixed(8);
                // a workaround for the VML's arcsize bug: cannot read arcsize of an instantiated node
                var parent = this.rawNode.parentNode, before = null;
                if(parent){
                        if(parent.lastChild != this.rawNode){
                                for(var i = 0; i < parent.childNodes.length; ++i){
                                        if(parent.childNodes[i] == this.rawNode){
                                                before = parent.childNodes[i+1];
                                                break;
                                        }
                                }
                        }
                        parent.removeChild(this.rawNode);
                }
                this.rawNode.arcsize = r;
                if(parent){
                        if(before){
                                parent.insertBefore(this.rawNode, before);
                        }else{
                                parent.appendChild(this.rawNode);
                        }
                }
                // set all necessary styles, which are lost by VML (yes, it's a VML's bug)
                return this.setTransform(this.matrix).setFill(this.fillStyle).setStroke(this.strokeStyle);      // self
        }
});
dojox.gfx.Rect.nodeType = "roundrect"; // use a roundrect so the stroke join type is respected

dojo.declare("dojox.gfx.Ellipse", dojox.gfx.shape.Ellipse, {
        // summary: an ellipse shape (VML)
        setShape: function(newShape){
                // summary: sets an ellipse shape object (VML)
                // newShape: Object: an ellipse shape object
                var shape = this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                var style = this.rawNode.style;
                style.left   = (shape.cx - shape.rx).toFixed();
                style.top    = (shape.cy - shape.ry).toFixed();
                style.width  = (shape.rx * 2).toFixed();
                style.height = (shape.ry * 2).toFixed();
                return this.setTransform(this.matrix);  // self
        }
});
dojox.gfx.Ellipse.nodeType = "oval";

dojo.declare("dojox.gfx.Circle", dojox.gfx.shape.Circle, {
        // summary: a circle shape (VML)
        setShape: function(newShape){
                // summary: sets a circle shape object (VML)
                // newShape: Object: a circle shape object
                var shape = this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                var style = this.rawNode.style;
                style.left   = (shape.cx - shape.r).toFixed();
                style.top    = (shape.cy - shape.r).toFixed();
                style.width  = (shape.r * 2).toFixed();
                style.height = (shape.r * 2).toFixed();
                return this;    // self
        }
});
dojox.gfx.Circle.nodeType = "oval";

dojo.declare("dojox.gfx.Line", dojox.gfx.shape.Line, {
        // summary: a line shape (VML)
        constructor: function(rawNode){
                if(rawNode) rawNode.setAttribute("dojoGfxType", "line");
        },
        setShape: function(newShape){
                // summary: sets a line shape object (VML)
                // newShape: Object: a line shape object
                var shape = this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                this.rawNode.path.v = "m" + shape.x1.toFixed() + " " + shape.y1.toFixed() +
                        "l" + shape.x2.toFixed() + " " + shape.y2.toFixed() + "e";
                return this.setTransform(this.matrix);  // self
        }
});
dojox.gfx.Line.nodeType = "shape";

dojo.declare("dojox.gfx.Polyline", dojox.gfx.shape.Polyline, {
        // summary: a polyline/polygon shape (VML)
        constructor: function(rawNode){
                if(rawNode) rawNode.setAttribute("dojoGfxType", "polyline");
        },
        setShape: function(points, closed){
                // summary: sets a polyline/polygon shape object (VML)
                // points: Object: a polyline/polygon shape object
                // closed: Boolean?: if true, close the polyline explicitely
                if(points && points instanceof Array){
                        // branch
                        // points: Array: an array of points
                        this.shape = dojox.gfx.makeParameters(this.shape, { points: points });
                        if(closed && this.shape.points.length) this.shape.points.push(this.shape.points[0]);
                }else{
                        this.shape = dojox.gfx.makeParameters(this.shape, points);
                }
                this.bbox = null;
                var attr = [], p = this.shape.points;
                if(p.length > 0){
                        attr.push("m");
                        var k = 1;
                        if(typeof p[0] == "number"){
                                attr.push(p[0].toFixed());
                                attr.push(p[1].toFixed());
                                k = 2;
                        }else{
                                attr.push(p[0].x.toFixed());
                                attr.push(p[0].y.toFixed());
                        }
                        if(p.length > k){
                                attr.push("l");
                                for(var i = k; i < p.length; ++i){
                                        if(typeof p[i] == "number"){
                                                attr.push(p[i].toFixed());
                                        }else{
                                                attr.push(p[i].x.toFixed());
                                                attr.push(p[i].y.toFixed());
                                        }
                                }
                        }
                }
                attr.push("e");
                this.rawNode.path.v = attr.join(" ");
                return this.setTransform(this.matrix);  // self
        }
});
dojox.gfx.Polyline.nodeType = "shape";

dojo.declare("dojox.gfx.Image", dojox.gfx.shape.Image, {
        // summary: an image (VML)
        constructor: function(rawNode){
                if(rawNode) rawNode.setAttribute("dojoGfxType", "image");
        },
        getEventSource: function() {
                // summary: returns a Node, which is used as 
                //      a source of events for this shape
                return this.rawNode ? this.rawNode.firstChild : null;   // Node
        },
        setShape: function(newShape){
                // summary: sets an image shape object (VML)
                // newShape: Object: an image shape object
                var shape = this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                var firstChild = this.rawNode.firstChild;
        firstChild.src = shape.src;
        if(shape.width || shape.height){
                        firstChild.style.width  = shape.width;
                        firstChild.style.height = shape.height;
        }
                return this.setTransform(this.matrix);  // self
        },
        _applyTransform: function() {
                var matrix = this._getRealMatrix();
                if(!matrix) return this;
                matrix = dojox.gfx.matrix.multiply(matrix, {dx: this.shape.x, dy: this.shape.y});
                var f = this.rawNode.filters["DXImageTransform.Microsoft.Matrix"];
                f.M11 = matrix.xx;
                f.M12 = matrix.xy;
                f.M21 = matrix.yx;
                f.M22 = matrix.yy;
                f.Dx  = matrix.dx;
                f.Dy  = matrix.dy;
                return this;
        }
});
dojox.gfx.Image.nodeType = "div";

dojo.declare("dojox.gfx.Text", dojox.gfx.shape.Text, {
        // summary: an anchored text (VML)
        constructor: function(rawNode){
                if(rawNode){rawNode.setAttribute("dojoGfxType", "text");}
                this.fontStyle = null;
        },
        _alignment: {start: "left", middle: "center", end: "right"},
        setShape: function(newShape){
                // summary: sets a text shape object (VML)
                // newShape: Object: a text shape object
                this.shape = dojox.gfx.makeParameters(this.shape, newShape);
                this.bbox = null;
                var r = this.rawNode, s = this.shape, x = s.x, y = s.y.toFixed();
                switch(s.align){
                        case "middle":
                                x -= 5;
                                break;
                        case "end":
                                x -= 10;
                                break;
                }
                this.rawNode.path.v = "m" + x.toFixed() + "," + y + 
                        "l" + (x + 10).toFixed() + "," + y + "e";
                // find path and text path
                var p = null, t = null, c = r.childNodes;
                for(var i = 0; i < c.length; ++i){
                        var tag = c[i].tagName;
                        if(tag == "path"){
                                p = c[i];
                                if(t) break;
                        }else if(tag == "textpath"){
                                t = c[i];
                                if(p) break;
                        }
                }
                if(!p){
                        p = this.rawNode.ownerDocument.createElement("v:path");
                        r.appendChild(p);
                }
                if(!t){
                        t = this.rawNode.ownerDocument.createElement("v:textpath");
                        r.appendChild(t);
                }
                p.textPathOk = true;
                t.on = true;
                var a = dojox.gfx.vml.text_alignment[s.align];
                t.style["v-text-align"] = a ? a : "left";
                t.style["text-decoration"] = s.decoration;
                t.style["v-rotate-letters"] = s.rotated;
                t.style["v-text-kern"] = s.kerning;
                t.string = s.text;
                return this.setTransform(this.matrix);  // self
        },
        _setFont: function(){
                // summary: sets a font object (VML)
                var f = this.fontStyle, c = this.rawNode.childNodes;
                for(var i = 0; i < c.length; ++i){
                        if(c[i].tagName == "textpath"){
                                c[i].style.font = dojox.gfx.makeFontString(f);
                                break;
                        }
                }
                this.setTransform(this.matrix);
        },
        _getRealMatrix: function(){
                // summary: returns the cumulative ("real") transformation matrix
                //      by combining the shape's matrix with its parent's matrix;
                //      it makes a correction for a font size
                var matrix = dojox.gfx.Shape.prototype._getRealMatrix.call(this);
                // It appears that text is always aligned vertically at a middle of x-height (???).
                // It is impossible to obtain these metrics from VML => I try to approximate it with 
                // more-or-less util value of 0.7 * FontSize, which is typical for European fonts.
                if(matrix){
                        matrix = dojox.gfx.matrix.multiply(matrix, 
                                {dy: -dojox.gfx.normalizedLength(this.fontStyle ? this.fontStyle.size : "10pt") * 0.35});
                }
                return matrix;  // dojox.gfx.Matrix2D
        },
        getTextWidth: function(){ 
                // summary: get the text width, in px 
                var rawNode = this.rawNode, _display = rawNode.style.display; 
                rawNode.style.display = "inline"; 
                var _width = dojox.gfx.pt2px(parseFloat(rawNode.currentStyle.width)); 
                rawNode.style.display = _display; 
                return _width; 
        } 
});
dojox.gfx.Text.nodeType = "shape";

dojox.gfx.path._calcArc = function(alpha){
        // return a start point, 1st and 2nd control points, and an end point
        var cosa  = Math.cos(alpha), sina  = Math.sin(alpha),
                p2 = {x: cosa + (4 / 3) * (1 - cosa), y: sina - (4 / 3) * cosa * (1 - cosa) / sina};
        return {
                s:  {x: cosa, y: -sina},
                c1: {x: p2.x, y: -p2.y},
                c2: p2,
                e:  {x: cosa, y: sina}
        };
};

dojo.declare("dojox.gfx.Path", dojox.gfx.path.Path, {
        // summary: a path shape (VML)
        constructor: function(rawNode){
                if(rawNode && !rawNode.getAttribute("dojoGfxType")){
                        rawNode.setAttribute("dojoGfxType", "path");
                }
                this.vmlPath = "";
                this.lastControl = {};
        },
        _updateWithSegment: function(segment){
                // summary: updates the bounding box of path with new segment
                // segment: Object: a segment
                var last = dojo.clone(this.last);
                dojox.gfx.Path.superclass._updateWithSegment.apply(this, arguments);
                // add a VML path segment
                var path = this[this.renderers[segment.action]](segment, last);
                if(typeof this.vmlPath == "string"){
                        this.vmlPath += path.join("");
                        this.rawNode.path.v = this.vmlPath + " r0,0 e";
                }else{
                        this.vmlPath = this.vmlPath.concat(path);
                }
        },
        setShape: function(newShape){
                // summary: forms a path using a shape (VML)
                // newShape: Object: an VML path string or a path object (see dojox.gfx.defaultPath)
                this.vmlPath = [];
                this.lastControl = {};
                dojox.gfx.Path.superclass.setShape.apply(this, arguments);
                this.vmlPath = this.vmlPath.join("");
                this.rawNode.path.v = this.vmlPath + " r0,0 e";
                return this;
        },
        _pathVmlToSvgMap: {m: "M", l: "L", t: "m", r: "l", c: "C", v: "c", qb: "Q", x: "z", e: ""},
        // VML-specific segment renderers
        renderers: {
                M: "_moveToA", m: "_moveToR", 
                L: "_lineToA", l: "_lineToR", 
                H: "_hLineToA", h: "_hLineToR", 
                V: "_vLineToA", v: "_vLineToR", 
                C: "_curveToA", c: "_curveToR", 
                S: "_smoothCurveToA", s: "_smoothCurveToR", 
                Q: "_qCurveToA", q: "_qCurveToR", 
                T: "_qSmoothCurveToA", t: "_qSmoothCurveToR", 
                A: "_arcTo", a: "_arcTo", 
                Z: "_closePath", z: "_closePath"
        },
        _addArgs: function(path, args, from, upto){
                if(typeof upto == "undefined"){
                        upto = args.length;
                }
                if(typeof from == "undefined"){
                        from = 0;
                }
                for(var i = from; i < upto; ++i){
                        path.push(" ");
                        path.push(args[i].toFixed());
                }
        },
        _addArgsAdjusted: function(path, last, args, from, upto){
                if(typeof upto == "undefined"){
                        upto = args.length;
                }
                if(typeof from == "undefined"){
                        from = 0;
                }
                for(var i = from; i < upto; i += 2){
                        path.push(" ");
                        path.push((last.x + args[i]).toFixed());
                        path.push(" ");
                        path.push((last.y + args[i + 1]).toFixed());
                }
        },
        _moveToA: function(segment){
                var p = [" m"], n = segment.args, l = n.length;
                if(l == 2){
                        this._addArgs(p, n);
                }else{
                        this._addArgs(p, n, 0, 2);
                        p.push(" l");
                        this._addArgs(p, n, 2);
                }
                this.lastControl = {};
                return p;
        },
        _moveToR: function(segment, last){
                var p = ["x" in last ? " t" : " m"], n = segment.args, l = n.length;
                if(l == 2){
                        this._addArgs(p, n);
                }else{
                        this._addArgs(p, n, 0, 2);
                        p.push(" r");
                        this._addArgs(p, n, 2);
                }
                this.lastControl = {};
                return p;
        },
        _lineToA: function(segment){
                var p = [" l"];
                this._addArgs(p, segment.args);
                this.lastControl = {};
                return p;
        },
        _lineToR: function(segment){
                var p = [" r"];
                this._addArgs(p, segment.args);
                this.lastControl = {};
                return p;
        },
        _hLineToA: function(segment, last){
                var p = [" l"], n = segment.args, l = n.length, y = " " + last.y.toFixed();
                for(var i = 0; i < l; ++i){
                        p.push(" ");
                        p.push(n[i].toFixed());
                        p.push(y);
                }
                this.lastControl = {};
                return p;
        },
        _hLineToR: function(segment){
                var p = [" r"], n = segment.args, l = n.length;
                for(var i = 0; i < l; ++i){
                        p.push(" ");
                        p.push(n[i].toFixed());
                        p.push(" 0");
                }
                this.lastControl = {};
                return p;
        },
        _vLineToA: function(segment, last){
                var p = [" l"], n = segment.args, l = n.length, x = " " + last.x.toFixed();
                for(var i = 0; i < l; ++i){
                        p.push(x);
                        p.push(" ");
                        p.push(n[i].toFixed());
                }
                this.lastControl = {};
                return p;
        },
        _vLineToR: function(segment){
                var p = [" r"], n = segment.args, l = n.length;
                for(var i = 0; i < l; ++i){
                        p.push(" 0 ");
                        p.push(n[i].toFixed());
                }
                this.lastControl = {};
                return p;
        },
        _curveToA: function(segment){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 6){
                        p.push(" c");
                        this._addArgs(p, n, i, i + 6);
                }
                this.lastControl = {x: n[l - 4], y: n[l - 3], type: "C"};
                return p;
        },
        _curveToR: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 6){
                        p.push(" v");
                        this._addArgs(p, n, i, i + 6);
                        this.lastControl = {x: last.x + n[i + 2], y: last.y + n[i + 3]};
                        last.x += n[i + 4];
                        last.y += n[i + 5];
                }
                this.lastControl.type = "C";
                return p;
        },
        _smoothCurveToA: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 4){
                        p.push(" c");
                        if(this.lastControl.type == "C"){
                                this._addArgs(p, [
                                        2 * last.x - this.lastControl.x, 
                                        2 * last.y - this.lastControl.y
                                ]);
                        }else{
                                this._addArgs(p, [last.x, last.y]);
                        }
                        this._addArgs(p, n, i, i + 4);
                }
                this.lastControl = {x: n[l - 4], y: n[l - 3], type: "C"};
                return p;
        },
        _smoothCurveToR: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 4){
                        p.push(" v");
                        if(this.lastControl.type == "C"){
                                this._addArgs(p, [
                                        last.x - this.lastControl.x, 
                                        last.y - this.lastControl.y
                                ]);
                        }else{
                                this._addArgs(p, [0, 0]);
                        }
                        this._addArgs(p, n, i, i + 4);
                        this.lastControl = {x: last.x + n[i], y: last.y + n[i + 1]};
                        last.x += n[i + 2];
                        last.y += n[i + 3];
                }
                this.lastControl.type = "C";
                return p;
        },
        _qCurveToA: function(segment){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 4){
                        p.push(" qb");
                        this._addArgs(p, n, i, i + 4);
                }
                this.lastControl = {x: n[l - 4], y: n[l - 3], type: "Q"};
                return p;
        },
        _qCurveToR: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 4){
                        p.push(" qb");
                        this._addArgsAdjusted(p, last, n, i, i + 4);
                        this.lastControl = {x: last.x + n[i], y: last.y + n[i + 1]};
                        last.x += n[i + 2];
                        last.y += n[i + 3];
                }
                this.lastControl.type = "Q";
                return p;
        },
        _qSmoothCurveToA: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 2){
                        p.push(" qb");
                        if(this.lastControl.type == "Q"){
                                this._addArgs(p, [
                                        this.lastControl.x = 2 * last.x - this.lastControl.x, 
                                        this.lastControl.y = 2 * last.y - this.lastControl.y
                                ]);
                        }else{
                                this._addArgs(p, [
                                        this.lastControl.x = last.x, 
                                        this.lastControl.y = last.y
                                ]);
                        }
                        this._addArgs(p, n, i, i + 2);
                }
                this.lastControl.type = "Q";
                return p;
        },
        _qSmoothCurveToR: function(segment, last){
                var p = [], n = segment.args, l = n.length;
                for(var i = 0; i < l; i += 2){
                        p.push(" qb");
                        if(this.lastControl.type == "Q"){
                                this._addArgs(p, [
                                        this.lastControl.x = 2 * last.x - this.lastControl.x, 
                                        this.lastControl.y = 2 * last.y - this.lastControl.y
                                ]);
                        }else{
                                this._addArgs(p, [
                                        this.lastControl.x = last.x, 
                                        this.lastControl.y = last.y
                                ]);
                        }
                        this._addArgsAdjusted(p, last, n, i, i + 2);
                }
                this.lastControl.type = "Q";
                return p;
        },
        _arcTo: function(segment, last){
                var p = [], n = segment.args, l = n.length, relative = segment.action == "a";
                for(var i = 0; i < l; i += 7){
                        var x1 = n[i + 5], y1 = n[i + 6];
                        if(relative){
                                x1 += last.x;
                                y1 += last.y;
                        }
                        var result = dojox.gfx.arc.arcAsBezier(
                                last, n[i], n[i + 1], n[i + 2], 
                                n[i + 3] ? 1 : 0, n[i + 4] ? 1 : 0,
                                x1, y1
                        );
                        for(var j = 0; j < result.length; ++j){
                                p.push(" c");
                                this._addArgs(p, result[j]);
                        }
                        last = {x: x1, y: y1};
                }
                this.lastControl = {};
                return p;
        },
        _closePath: function(){
                this.lastControl = {};
                return ["x"];
        }
});
dojox.gfx.Path.nodeType = "shape";

dojo.declare("dojox.gfx.TextPath", dojox.gfx.Path, {
        // summary: a textpath shape (VML)
        constructor: function(rawNode){
                if(rawNode){rawNode.setAttribute("dojoGfxType", "textpath");}
                this.fontStyle = null;
                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
        },

        _setText: function(){
                // summary: sets a text shape object (VML)
                this.bbox = null;
                var r = this.rawNode, s = this.text,
                        // find path and text path
                        p = null, t = null, c = r.childNodes;
                for(var i = 0; i < c.length; ++i){
                        var tag = c[i].tagName;
                        if(tag == "path"){
                                p = c[i];
                                if(t) break;
                        }else if(tag == "textpath"){
                                t = c[i];
                                if(p) break;
                        }
                }
                if(!p){
                        p = this.rawNode.ownerDocument.createElement("v:path");
                        r.appendChild(p);
                }
                if(!t){
                        t = this.rawNode.ownerDocument.createElement("v:textpath");
                        r.appendChild(t);
                }
                p.textPathOk = true;
                t.on = true;
                var a = dojox.gfx.vml.text_alignment[s.align];
                t.style["v-text-align"] = a ? a : "left";
                t.style["text-decoration"] = s.decoration;
                t.style["v-rotate-letters"] = s.rotated;
                t.style["v-text-kern"] = s.kerning;
                t.string = s.text;
        },
        _setFont: function(){
                // summary: sets a font object (VML)
                var f = this.fontStyle, c = this.rawNode.childNodes;
                for(var i = 0; i < c.length; ++i){
                        if(c[i].tagName == "textpath"){
                                c[i].style.font = dojox.gfx.makeFontString(f);
                                break;
                        }
                }
        }
});
dojox.gfx.TextPath.nodeType = "shape";

dojo.declare("dojox.gfx.Surface", dojox.gfx.shape.Surface, {
        // summary: a surface object to be used for drawings (VML)
        constructor: function(){
                dojox.gfx.vml.Container._init.call(this);
        },
        setDimensions: function(width, height){
                // summary: sets the width and height of the rawNode
                // width: String: width of surface, e.g., "100px"
                // height: String: height of surface, e.g., "100px"
                this.width  = dojox.gfx.normalizedLength(width);        // in pixels
                this.height = dojox.gfx.normalizedLength(height);       // in pixels
                if(!this.rawNode) return this;
                var cs = this.clipNode.style, 
                        r = this.rawNode, rs = r.style,
                        bs = this.bgNode.style;
                cs.width  = width;
                cs.height = height;
                cs.clip = "rect(0 " + width + " " + height + " 0)";
                rs.width = width;
                rs.height = height;
                r.coordsize = width + " " + height;
                bs.width = width;
                bs.height = height;
                return this;    // self
        },
        getDimensions: function(){
                // summary: returns an object with properties "width" and "height"
                var t = this.rawNode ? {
                        width:  dojox.gfx.normalizedLength(this.rawNode.style.width), 
                        height: dojox.gfx.normalizedLength(this.rawNode.style.height)} : null;
                if(t.width  <= 0){ t.width  = this.width; }
                if(t.height <= 0){ t.height = this.height; }
                return t;       // Object
        }
});

dojox.gfx.createSurface = function(parentNode, width, height){
        // summary: creates a surface (VML)
        // parentNode: Node: a parent node
        // width: String: width of surface, e.g., "100px"
        // height: String: height of surface, e.g., "100px"

        if(!width){ width = "100%"; }
        if(!height){ height = "100%"; }
        var s = new dojox.gfx.Surface(), p = dojo.byId(parentNode),
                c = s.clipNode = p.ownerDocument.createElement("div"),
                r = s.rawNode = p.ownerDocument.createElement("v:group"),
                cs = c.style, rs = r.style;
                
        p.style.width  = width;
        p.style.height = height;
                
        cs.width  = width;
        cs.height = height;
        cs.clip = "rect(0 " + width + " " + height + " 0)";
        cs.position = "absolute";
        rs.width  = width;
        rs.height = height;
        r.coordsize = (width == "100%" ? width : parseFloat(width)) + " " +
                (height == "100%" ? height : parseFloat(height));
        r.coordorigin = "0 0";
        
        // create a background rectangle, which is required to show all other shapes
        var b = s.bgNode = r.ownerDocument.createElement("v:rect"), bs = b.style;
        bs.left = bs.top = 0;
        bs.width  = rs.width;
        bs.height = rs.height;
        b.filled = b.stroked = "f";

        r.appendChild(b);
        c.appendChild(r);
        p.appendChild(c);
        
        s.width  = dojox.gfx.normalizedLength(width);   // in pixels
        s.height = dojox.gfx.normalizedLength(height);  // in pixels

        return s;       // dojox.gfx.Surface
};

// Extenders

dojox.gfx.vml.Container = {
        _init: function(){
                dojox.gfx.shape.Container._init.call(this);
        },
        add: function(shape){
                // summary: adds a shape to a group/surface
                // shape: dojox.gfx.Shape: an VML shape object
                if(this != shape.getParent()){
                        this.rawNode.appendChild(shape.rawNode);
                        //dojox.gfx.Group.superclass.add.apply(this, arguments);
                        //this.inherited(arguments);
                        dojox.gfx.shape.Container.add.apply(this, arguments);
                }
                return this;    // self
        },
        remove: function(shape, silently){
                // summary: remove a shape from a group/surface
                // shape: dojox.gfx.Shape: an VML shape object
                // silently: Boolean?: if true, regenerate a picture
                if(this == shape.getParent()){
                        if(this.rawNode == shape.rawNode.parentNode){
                                this.rawNode.removeChild(shape.rawNode);
                        }
                        //dojox.gfx.Group.superclass.remove.apply(this, arguments);
                        //this.inherited(arguments);
                        dojox.gfx.shape.Container.remove.apply(this, arguments);
                }
                return this;    // self
        },
        clear: function(){
                // summary: removes all shapes from a group/surface
                var r = this.rawNode;
                while(r.firstChild != r.lastChild){
                        if(r.firstChild != this.bgNode){
                                r.removeChild(r.firstChild);
                        }
                        if(r.lastChild != this.bgNode){
                                r.removeChild(r.lastChild);
                        }
                }
                //return this.inherited(arguments);     // self
                return dojox.gfx.shape.Container.clear.apply(this, arguments);
        },
        _moveChildToFront: dojox.gfx.shape.Container._moveChildToFront,
        _moveChildToBack:  dojox.gfx.shape.Container._moveChildToBack
};

dojo.mixin(dojox.gfx.shape.Creator, {
        // summary: VML shape creators
        createGroup: function(){
                // summary: creates a VML group shape
                var g = this.createObject(dojox.gfx.Group, null);       // dojox.gfx.Group
                // create a background rectangle, which is required to show all other shapes
                var r = g.rawNode.ownerDocument.createElement("v:rect");
                r.style.left = r.style.top = 0;
                r.style.width  = g.rawNode.style.width;
                r.style.height = g.rawNode.style.height;
                r.filled = r.stroked = "f";
                g.rawNode.appendChild(r);
                g.bgNode = r;
                return g;       // dojox.gfx.Group
        },
        createImage: function(image){
                // summary: creates a VML image shape
                // image: Object: an image object (see dojox.gfx.defaultImage)
                if(!this.rawNode) return null;
                var shape = new dojox.gfx.Image(), node = this.rawNode.ownerDocument.createElement('div');
                node.style.position = "absolute";
                node.style.width  = this.rawNode.style.width;
                node.style.height = this.rawNode.style.height;
                node.style.filter = "progid:DXImageTransform.Microsoft.Matrix(M11=1, M12=0, M21=0, M22=1, Dx=0, Dy=0)";
                var img  = this.rawNode.ownerDocument.createElement('img');
                node.appendChild(img);
                shape.setRawNode(node);
                this.rawNode.appendChild(node);
                shape.setShape(image);
                this.add(shape);
                return shape;   // dojox.gfx.Image
        },
        createObject: function(shapeType, rawShape) {
                // summary: creates an instance of the passed shapeType class
                // shapeType: Function: a class constructor to create an instance of
                // rawShape: Object: properties to be passed in to the classes "setShape" method
                // overrideSize: Boolean: set the size explicitly, if true
                if(!this.rawNode) return null;
                var shape = new shapeType(),
                        node = this.rawNode.ownerDocument.createElement('v:' + shapeType.nodeType);
                shape.setRawNode(node);
                this.rawNode.appendChild(node);
                switch(shapeType){
                        case dojox.gfx.Group:
                        case dojox.gfx.Line:
                        case dojox.gfx.Polyline:
                        case dojox.gfx.Text:
                        case dojox.gfx.Path:
                        case dojox.gfx.TextPath:
                                this._overrideSize(node);
                }
                shape.setShape(rawShape);
                this.add(shape);
                return shape;   // dojox.gfx.Shape
        },
        _overrideSize: function(node){
                var p = this;
                for(; p && !(p instanceof dojox.gfx.Surface); p = p.parent);
                node.style.width  = p.width;
                node.style.height = p.height;
                node.coordsize = p.width + " " + p.height;
        }
});

dojo.extend(dojox.gfx.Group, dojox.gfx.vml.Container);
dojo.extend(dojox.gfx.Group, dojox.gfx.shape.Creator);

dojo.extend(dojox.gfx.Surface, dojox.gfx.vml.Container);
dojo.extend(dojox.gfx.Surface, dojox.gfx.shape.Creator);

}