这是一个非常复杂的解决方案,但最后我想出了以下代码,它运行良好且稳定:
/*Code to create a new Workitem Shape with an image inside it*/
var graph = new joint.dia.Graph;
var paper = new joint.dia.Paper({
el: $('#paper'),
width: 600,
height: 600,
gridSize: 20,
model: graph
});
joint.shapes.devs.MyImageModel = joint.shapes.devs.Model.extend({
markup: '<g class="rotatable"><g class="scalable"><rect class="body"/></g><image/><text class="label"/><g class="inPorts"/><g class="outPorts"/></g>',
defaults: joint.util.deepSupplement({
type: 'devs.MyImageModel',
size: {
width: 80,
height: 80
},
attrs: {
rect: {
stroke: '#d1d1d1',
fill: {
type: 'linearGradient',
stops: [{
offset: '0%',
color: 'white'
}, {
offset: '50%',
color: '#d1d1d1'
}],
attrs: {
x1: '0%',
y1: '0%',
x2: '0%',
y2: '100%'
}
}
},
circle: {
stroke: 'gray'
},
'.label': {
text: 'My Workitem',
'ref-y': +65,
'font-size': 14
},
'.inPorts circle': {
fill: '#dddddd', opacity: 0.9
},
'.outPorts circle': {
fill: '#dddddd', opacity: 0.9
},
'.inPorts text, .outPorts text': { 'font-size': 9 },
image: {
'xlink:href': 'img/person.png',
width: 80,
height: 50,
'ref-x': .5,
'ref-y': .5,
ref: 'rect',
'x-alignment': 'middle',
'y-alignment': 'middle'
}
}
}, joint.shapes.devs.Model.prototype.defaults)
});
joint.shapes.devs.MyImageModelView = joint.shapes.devs.ModelView;
// Usage:
var imageModel = new joint.shapes.devs.MyImageModel({
position: {
x: 200,
y: 250
},
size: {
width: 150,
height: 100
},
inPorts: ['in1', 'in2','in3'],
outPorts: ['out1', 'out2', 'out3']
});
graph.addCell(imageModel);