svg DOM的一些js操作

这是第一个实例,其中讲了如何新建svg,添加元素,保存svg document,查看svg.

下面将附上常用一些元素的添加方法:(为js的,但基本上跟java中操作一样,就是类名有点细微差别)

Circle

var svgns = "http://www.w3.org/2000/svg";
 function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument;
var shape = svgDocument.createElementNS(svgns, "circle"); 
shape.setAttributeNS(null, "cx", 25); 
shape.setAttributeNS(null, "cy", 25);
shape.setAttributeNS(null, "r", 20);
shape.setAttributeNS(null, "fill", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Ellipse

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt)
 { 
if ( window.svgDocument == null )
svgDocument = evt.target.ownerDocument; 
var shape = svgDocument.createElementNS(svgns, "ellipse");
shape.setAttributeNS(null, "cx", 25); 
shape.setAttributeNS(null, "cy", 25); 
shape.setAttributeNS(null, "rx", 20); 
shape.setAttributeNS(null, "ry", 10); 
shape.setAttributeNS(null, "fill", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Line

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
var shape = svgDocument.createElementNS(svgns, "line"); 
shape.setAttributeNS(null, "x1", 5); 
shape.setAttributeNS(null, "y1", 5); 
shape.setAttributeNS(null, "x2", 45); 
shape.setAttributeNS(null, "y2", 45); 
shape.setAttributeNS(null, "stroke", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Path

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
var shape = svgDocument.createElementNS(svgns, "path"); 
shape.setAttributeNS(null, "d", "M5,5 C5,45 45,45 45,5"); 
shape.setAttributeNS(null, "fill", "none"); 
shape.setAttributeNS(null, "stroke", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Polygon

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
shape = svgDocument.createElementNS(svgns, "polygon"); 
shape.setAttributeNS(null, "points", "5,5 45,45 5,45 45,5"); 
shape.setAttributeNS(null, "fill", "none"); 
shape.setAttributeNS(null, "stroke", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Polyline

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
shape = svgDocument.createElementNS(svgns, "polyline"); 
shape.setAttributeNS(null, "points", "5,5 45,45 5,45 45,5"); 
shape.setAttributeNS(null, "fill", "none"); 
shape.setAttributeNS(null, "stroke", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Rectangle

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
var shape = svgDocument.createElementNS(svgns, "rect"); 
shape.setAttributeNS(null, "x", 5); 
shape.setAttributeNS(null, "y", 5); 
shape.setAttributeNS(null, "width", 40); 
shape.setAttributeNS(null, "height", 40); 
shape.setAttributeNS(null, "fill", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Rounded Rectangle

var svgns = "http://www.w3.org/2000/svg"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null ) 
svgDocument = evt.target.ownerDocument; 
var shape = svgDocument.createElementNS(svgns, "rect"); 
shape.setAttributeNS(null, "x", 5); 
shape.setAttributeNS(null, "y", 5); 
shape.setAttributeNS(null, "rx", 5); 
shape.setAttributeNS(null, "ry", 5); 
shape.setAttributeNS(null, "width", 40); 
shape.setAttributeNS(null, "height", 40); 
shape.setAttributeNS(null, "fill", "green"); 
svgDocument.documentElement.appendChild(shape); 
}

Use

var svgns = "http://www.w3.org/2000/svg"; 
var xlinkns = "http://www.w3.org/1999/xlink"; 
function makeShape(evt) 
{ 
if ( window.svgDocument == null )
svgDocument = evt.target.ownerDocument; 
var svgRoot = svgDocument.documentElement; 
var defs = svgDocument.createElementNS(svgns, "defs"); 
varrect = svgDocument.createElementNS(svgns, "rect"); 
rect.setAttributeNS(null, "id", "rect");
rect.setAttributeNS(null, "width", 15); 
rect.setAttributeNS(null, "height", 15);
rect.setAttributeNS(null, "style", "fill: green");
defs.appendChild(rect); 
var use1 = svgDocument.createElementNS(svgns, "use"); 
use1.setAttributeNS(null, "x", 5); 
use1.setAttributeNS(null, "y", 5); 
use1.setAttributeNS(xlinkns, "xlink:href", "#rect"); 
use2 = svgDocument.createElementNS(svgns, "use"); 
use2.setAttributeNS(null, "x", 30); 
use2.setAttributeNS(null, "y", 30); 
use2.setAttributeNS(xlinkns, "xlink:href", "#rect"); 
svgRoot.appendChild(defs); 
svgRoot.appendChild(use1); 
svgRoot.appendChild(use2); 
}