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vml_attach.js
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vml_attach.js
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dojo.require("dojox.gfx.vml");
dojo.experimental("dojox.gfx.vml_attach");
(function(){
dojox.gfx.attachNode = function(node){
// summary: creates a shape from a Node
// node: Node: an VML node
if(!node) return null;
var s = null;
switch(node.tagName.toLowerCase()){
case dojox.gfx.Rect.nodeType:
s = new dojox.gfx.Rect(node);
attachRect(s);
break;
case dojox.gfx.Ellipse.nodeType:
if(node.style.width == node.style.height){
s = new dojox.gfx.Circle(node);
attachCircle(s);
}else{
s = new dojox.gfx.Ellipse(node);
attachEllipse(s);
}
break;
case dojox.gfx.Path.nodeType:
switch(node.getAttribute("dojoGfxType")){
case "line":
s = new dojox.gfx.Line(node);
attachLine(s);
break;
case "polyline":
s = new dojox.gfx.Polyline(node);
attachPolyline(s);
break;
case "path":
s = new dojox.gfx.Path(node);
attachPath(s);
break;
case "text":
s = new dojox.gfx.Text(node);
attachText(s);
attachFont(s);
attachTextTransform(s);
break;
case "textpath":
s = new dojox.gfx.TextPath(node);
attachPath(s);
attachText(s);
attachFont(s);
break;
}
break;
case dojox.gfx.Image.nodeType:
switch(node.getAttribute("dojoGfxType")){
case "image":
s = new dojox.gfx.Image(node);
attachImage(s);
attachImageTransform(s);
break;
}
break;
default:
//console.debug("FATAL ERROR! tagName = " + node.tagName);
return null;
}
if(!(s instanceof dojox.gfx.Image)){
attachFill(s);
attachStroke(s);
if(!(s instanceof dojox.gfx.Text)){
attachTransform(s);
}
}
return s; // dojox.gfx.Shape
};
dojox.gfx.attachSurface = function(node){
// summary: creates a surface from a Node
// node: Node: an VML node
var s = new dojox.gfx.Surface();
s.clipNode = node;
var r = s.rawNode = node.firstChild;
var b = r.firstChild;
if(!b || b.tagName != "rect"){
return null; // dojox.gfx.Surface
}
s.bgNode = r;
return s; // dojox.gfx.Surface
};
var attachFill = function(object){
// summary: deduces a fill style from a node.
// object: dojox.gfx.Shape: an VML shape
var fillStyle = null, r = object.rawNode, fo = r.fill;
if(fo.on && fo.type == "gradient"){
var fillStyle = dojo.clone(dojox.gfx.defaultLinearGradient),
rad = dojox.gfx.matrix._degToRad(fo.angle);
fillStyle.x2 = Math.cos(rad);
fillStyle.y2 = Math.sin(rad);
fillStyle.colors = [];
var stops = fo.colors.value.split(";");
for(var i = 0; i < stops.length; ++i){
var t = stops[i].match(/\S+/g);
if(!t || t.length != 2){ continue; }
fillStyle.colors.push({offset: dojox.gfx.vml._parseFloat(t[0]), color: new dojo.Color(t[1])});
}
}else if(fo.on && fo.type == "gradientradial"){
var fillStyle = dojo.clone(dojox.gfx.defaultRadialGradient),
w = parseFloat(r.style.width), h = parseFloat(r.style.height);
fillStyle.cx = isNaN(w) ? 0 : fo.focusposition.x * w;
fillStyle.cy = isNaN(h) ? 0 : fo.focusposition.y * h;
fillStyle.r = isNaN(w) ? 1 : w / 2;
fillStyle.colors = [];
var stops = fo.colors.value.split(";");
for(var i = stops.length - 1; i >= 0; --i){
var t = stops[i].match(/\S+/g);
if(!t || t.length != 2){ continue; }
fillStyle.colors.push({offset: dojox.gfx.vml._parseFloat(t[0]), color: new dojo.Color(t[1])});
}
}else if(fo.on && fo.type == "tile"){
var fillStyle = dojo.clone(dojox.gfx.defaultPattern);
fillStyle.width = dojox.gfx.pt2px(fo.size.x); // from pt
fillStyle.height = dojox.gfx.pt2px(fo.size.y); // from pt
fillStyle.x = fo.origin.x * fillStyle.width;
fillStyle.y = fo.origin.y * fillStyle.height;
fillStyle.src = fo.src;
}else if(fo.on && r.fillcolor){
// a color object !
fillStyle = new dojo.Color(r.fillcolor+"");
fillStyle.a = fo.opacity;
}
object.fillStyle = fillStyle;
};
var attachStroke = function(object) {
// summary: deduces a stroke style from a node.
// object: dojox.gfx.Shape: an VML shape
var r = object.rawNode;
if(!r.stroked){
object.strokeStyle = null;
return;
}
var strokeStyle = object.strokeStyle = dojo.clone(dojox.gfx.defaultStroke),
rs = r.stroke;
strokeStyle.color = new dojo.Color(r.strokecolor.value);
strokeStyle.width = dojox.gfx.normalizedLength(r.strokeweight+"");
strokeStyle.color.a = rs.opacity;
strokeStyle.cap = this._translate(this._capMapReversed, rs.endcap);
strokeStyle.join = rs.joinstyle == "miter" ? rs.miterlimit : rs.joinstyle;
strokeStyle.style = rs.dashstyle;
};
var attachTransform = function(object) {
// summary: deduces a transformation matrix from a node.
// object: dojox.gfx.Shape: an VML shape
var s = rawNode.skew, sm = s.matrix, so = s.offset;
object.matrix = dojox.gfx.matrix.normalize({
xx: sm.xtox,
xy: sm.ytox,
yx: sm.xtoy,
yy: sm.ytoy,
dx: dojox.gfx.pt2px(so.x),
dy: dojox.gfx.pt2px(so.y)
});
};
var attachGroup = function(object){
// summary: reconstructs all group shape parameters from a node (VML).
// object: dojox.gfx.Shape: an VML shape
// attach the background
object.bgNode = object.rawNode.firstChild; // TODO: check it first
};
var attachRect = function(object){
// summary: builds a rectangle shape from a node.
// object: dojox.gfx.Shape: an VML shape
// a workaround for the VML's arcsize bug: cannot read arcsize of an instantiated node
var r = object.rawNode, arcsize = r.outerHTML.match(/arcsize = \"(\d*\.?\d+[%f]?)\"/)[1],
style = r.style, width = parseFloat(style.width), height = parseFloat(style.height);
arcsize = (arcsize.indexOf("%") >= 0) ? parseFloat(arcsize) / 100 : dojox.gfx.vml._parseFloat(arcsize);
// make an object
object.shape = dojox.gfx.makeParameters(dojox.gfx.defaultRect, {
x: parseInt(style.left),
y: parseInt(style.top),
width: width,
height: height,
r: Math.min(width, height) * arcsize
});
};
var attachEllipse = function(object){
// summary: builds an ellipse shape from a node.
// object: dojox.gfx.Shape: an VML shape
var style = object.rawNode.style,
rx = parseInt(style.width ) / 2,
ry = parseInt(style.height) / 2;
object.shape = dojox.gfx.makeParameters(dojox.gfx.defaultEllipse, {
cx: parseInt(style.left) + rx,
cy: parseInt(style.top ) + ry,
rx: rx,
ry: ry
});
};
var attachCircle = function(object){
// summary: builds a circle shape from a node.
// object: dojox.gfx.Shape: an VML shape
var style = object.rawNode.style, r = parseInt(style.width) / 2;
object.shape = dojox.gfx.makeParameters(dojox.gfx.defaultCircle, {
cx: parseInt(style.left) + r,
cy: parseInt(style.top) + r,
r: r
});
};
var attachLine = function(object){
// summary: builds a line shape from a node.
// object: dojox.gfx.Shape: an VML shape
var shape = object.shape = dojo.clone(dojox.gfx.defaultLine),
p = object.rawNode.path.v.match(dojox.gfx.pathVmlRegExp);
do{
if(p.length < 7 || p[0] != "m" || p[3] != "l" || p[6] != "e"){ break; }
shape.x1 = parseInt(p[1]);
shape.y1 = parseInt(p[2]);
shape.x2 = parseInt(p[4]);
shape.y2 = parseInt(p[5]);
}while(false);
};
var attachPolyline = function(object){
// summary: builds a polyline/polygon shape from a node.
// object: dojox.gfx.Shape: an VML shape
var shape = object.shape = dojo.clone(dojox.gfx.defaultPolyline),
p = object.rawNode.path.v.match(dojox.gfx.pathVmlRegExp);
do{
if(p.length < 3 || p[0] != "m"){ break; }
var x = parseInt(p[0]), y = parseInt(p[1]);
if(isNaN(x) || isNaN(y)){ break; }
shape.points.push({x: x, y: y});
if(p.length < 6 || p[3] != "l"){ break; }
for(var i = 4; i < p.length; i += 2){
x = parseInt(p[i]);
y = parseInt(p[i + 1]);
if(isNaN(x) || isNaN(y)){ break; }
shape.points.push({x: x, y: y});
}
}while(false);
};
var attachImage = function(object){
// summary: builds an image shape from a node.
// object: dojox.gfx.Shape: an VML shape
object.shape = dojo.clone(dojox.gfx.defaultImage);
object.shape.src = object.rawNode.firstChild.src;
};
var attachImageTransform = function(object) {
// summary: deduces a transformation matrix from a node.
// object: dojox.gfx.Shape: an VML shape
var m = object.rawNode.filters["DXImageTransform.Microsoft.Matrix"];
object.matrix = dojox.gfx.matrix.normalize({
xx: m.M11,
xy: m.M12,
yx: m.M21,
yy: m.M22,
dx: m.Dx,
dy: m.Dy
});
};
var attachText = function(object){
// summary: builds a text shape from a node.
// object: dojox.gfx.Shape: an VML shape
var shape = object.shape = dojo.clone(dojox.gfx.defaultText),
r = object.rawNode, p = r.path.v.match(dojox.gfx.pathVmlRegExp);
do{
if(!p || p.length != 7){ break; }
var c = r.childNodes, i = 0;
for(; i < c.length && c[i].tagName != "textpath"; ++i);
if(i >= c.length){ break; }
var s = c[i].style;
shape.text = c[i].string;
switch(s["v-text-align"]){
case "left":
shape.x = parseInt(p[1]);
shape.align = "start";
break;
case "center":
shape.x = (parseInt(p[1]) + parseInt(p[4])) / 2;
shape.align = "middle";
break;
case "right":
shape.x = parseInt(p[4]);
shape.align = "end";
break;
}
shape.y = parseInt(p[2]);
shape.decoration = s["text-decoration"];
shape.rotated = s["v-rotate-letters"].toLowerCase() in dojox.gfx.vml._bool;
shape.kerning = s["v-text-kern"].toLowerCase() in dojox.gfx.vml._bool;
return;
}while(false);
object.shape = null;
};
var attachFont = function(object){
// summary: deduces a font style from a node.
// object: dojox.gfx.Shape: an VML shape
var fontStyle = object.fontStyle = dojo.clone(dojox.gfx.defaultFont),
c = object.rawNode.childNodes, i = 0;
for(; i < c.length && c[i].tagName == "textpath"; ++i);
if(i >= c.length){
object.fontStyle = null;
return;
}
var s = c[i].style;
fontStyle.style = s.fontstyle;
fontStyle.variant = s.fontvariant;
fontStyle.weight = s.fontweight;
fontStyle.size = s.fontsize;
fontStyle.family = s.fontfamily;
};
var attachTextTransform = function(object) {
// summary: deduces a transformation matrix from a node.
// object: dojox.gfx.Shape: an VML shape
attachTransform(object);
var matrix = object.matrix, fs = object.fontStyle;
// see comments in _getRealMatrix()
if(matrix && fs){
object.matrix = dojox.gfx.matrix.multiply(matrix, {dy: dojox.gfx.normalizedLength(fs.size) * 0.35});
}
};
var attachPath = function(object){
// summary: builds a path shape from a Node.
// object: dojox.gfx.Shape: an VML shape
var shape = object.shape = dojo.clone(dojox.gfx.defaultPath),
p = rawNode.path.v.match(dojox.gfx.pathVmlRegExp),
t = [], skip = false, map = dojox.gfx.Path._pathVmlToSvgMap;
for(var i = 0; i < p.length; ++p){
var s = p[i];
if(s in map) {
skip = false;
t.push(map[s]);
} else if(!skip){
var n = parseInt(s);
if(isNaN(n)){
skip = true;
}else{
t.push(n);
}
}
}
var l = t.length;
if(l >= 4 && t[l - 1] == "" && t[l - 2] == 0 && t[l - 3] == 0 && t[l - 4] == "l"){
t.splice(l - 4, 4);
}
if(l){
shape.path = t.join(" ");
}
};
})();

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