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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);
}
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