使用JonintJS,如何在页面加载后在canvas上绘制图形?
Use JonintJS,How do I draw a graph on the canvas after the page is loaded?
一直在用JointJS在页面上画流程图,很苦恼,目前只发现JointJS只能在页面加载前映射图形,结果我想点击一个按钮,在canvas上绘制一个图形(比如矩形),简单的代码架构如下:
<button onclick='addCell()'/>
<div id='paper'/>
var graph = new joint.dia.Graph();
var paper = new joint.dia.Paper({
el: $('#paper'),
width: 1580,
height: 450,
gridSize: 1,
model: graph,
perpendicularLinks: true
});
var r1 = new joint.shapes.basic.Rect({
position: {
x: 10,
y: 10
},
size: {
width: 100,
height: 40
},
attrs: {
text: {
text: 'Rect1'
}
}
});
function addCell(){
graph.addCells(r1);
}
给我一个想法,提前感谢您的回复。
您的代码基本上是正确的,但有一些 HTML 不准确 语法:
<div id="paper"></div>
<button id="btn-layout", onclick="addCell()">Add cell</button>
<!-- code -->
<script type="text/javascript">
var graph = new joint.dia.Graph();
var paper = new joint.dia.Paper({
el: $('#paper'),
width: 1580,
height: 450,
gridSize: 1,
model: graph,
perpendicularLinks: true
});
var r1 = new joint.shapes.basic.Rect({
position: {
x: 10,
y: 10
},
size: {
width: 100,
height: 40
},
attrs: {
text: {
text: 'Rect1'
}
}
});
function addCell(){
graph.addCells(r1);
}
</script>
另外不要忘记包含 installation tutorial 中描述的 JointJS 依赖项。
一直在用JointJS在页面上画流程图,很苦恼,目前只发现JointJS只能在页面加载前映射图形,结果我想点击一个按钮,在canvas上绘制一个图形(比如矩形),简单的代码架构如下:
<button onclick='addCell()'/>
<div id='paper'/>
var graph = new joint.dia.Graph();
var paper = new joint.dia.Paper({
el: $('#paper'),
width: 1580,
height: 450,
gridSize: 1,
model: graph,
perpendicularLinks: true
});
var r1 = new joint.shapes.basic.Rect({
position: {
x: 10,
y: 10
},
size: {
width: 100,
height: 40
},
attrs: {
text: {
text: 'Rect1'
}
}
});
function addCell(){
graph.addCells(r1);
}
给我一个想法,提前感谢您的回复。
您的代码基本上是正确的,但有一些 HTML 不准确 语法:
<div id="paper"></div>
<button id="btn-layout", onclick="addCell()">Add cell</button>
<!-- code -->
<script type="text/javascript">
var graph = new joint.dia.Graph();
var paper = new joint.dia.Paper({
el: $('#paper'),
width: 1580,
height: 450,
gridSize: 1,
model: graph,
perpendicularLinks: true
});
var r1 = new joint.shapes.basic.Rect({
position: {
x: 10,
y: 10
},
size: {
width: 100,
height: 40
},
attrs: {
text: {
text: 'Rect1'
}
}
});
function addCell(){
graph.addCells(r1);
}
</script>
另外不要忘记包含 installation tutorial 中描述的 JointJS 依赖项。