js画图开发库--mxgraph--contexticons-悬停图标.html
<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
<meta http-equiv=Content-Type content="text/html;charset=utf-8">
<title>悬停图标示例 for mxGraph</title>
<!-- 如果本文件的包与src不是在同一个目录,就要将basepath设置到src目录下 -->
<script type="text/javascript">
mxBasePath = '../src';
</script>
<!-- 引入支持库文件 -->
<script type="text/javascript" src="../src/js/mxClient.js"></script>
<!-- 示例代码 -->
<script type="text/javascript">
// Defines a subclass for mxVertexHandler that adds a set of clickable icons to every selected vertex.
//定义节点处理程序，每个节点在被点击时会显示节点图标。图表是以节点的子类形式存在的。
function mxVertexToolHandler(state) {
mxVertexHandler.apply(this, arguments);
};
mxVertexToolHandler.prototype = new mxVertexHandler();
mxVertexToolHandler.prototype.constructor = mxVertexToolHandler;
mxVertexToolHandler.prototype.domNode = null;
//初始化
mxVertexToolHandler.prototype.init = function()
{
mxVertexHandler.prototype.init.apply(this, arguments);
//示例中使用div容器显示元素，这样做的目的就是解决IE浏览器中透明度的问题。
this.domNode = document.createElement('div');
this.domNode.style.position = 'absolute';
this.domNode.style.whiteSpace = 'nowrap';
var md = (mxClient.IS_TOUCH) ? 'touchstart' : 'mousedown';
// 删除按钮
var img = mxUtils.createImage('images/delete2.png');
img.style.cursor = 'pointer';
img.style.width = '16px';
img.style.height = '16px';
mxEvent.addListener(img, md,
mxUtils.bind(this, function(evt)
{
// Disables dragging the image
mxEvent.consume(evt);
})
);
mxEvent.addListener(img, 'click',
mxUtils.bind(this, function(evt)
{
this.graph.removeCells([this.state.cell]);
mxEvent.consume(evt);
})
);
this.domNode.appendChild(img);
// 大小按钮
var img = mxUtils.createImage('images/fit_to_size.png');
img.style.cursor = 'se-resize';
img.style.width = '16px';
img.style.height = '16px';
mxEvent.addListener(img, md,
mxUtils.bind(this, function(evt)
{
this.start(mxEvent.getClientX(evt), mxEvent.getClientY(evt), 7);
this.graph.isMouseDown = true;
mxEvent.consume(evt);
})
);
this.domNode.appendChild(img);
// 移动按钮
var img = mxUtils.createImage('images/connector.gif');
img.style.cursor = 'move';
img.style.width = '16px';
img.style.height = '16px';
mxEvent.addListener(img, md,
mxUtils.bind(this, function(evt)
{
this.graph.graphHandler.start(this.state.cell,
mxEvent.getClientX(evt), mxEvent.getClientY(evt));
this.graph.graphHandler.cellWasClicked = true;
this.graph.isMouseDown = true;
mxEvent.consume(evt);
})
);
this.domNode.appendChild(img);
// 链接按钮
var img = mxUtils.createImage('images/check.png');
img.style.cursor = 'pointer';
img.style.width = '16px';
img.style.height = '16px';
mxEvent.addListener(img, md,
mxUtils.bind(this, function(evt)
{
var pt = mxUtils.convertPoint(this.graph.container,
mxEvent.getClientX(evt), mxEvent.getClientY(evt));
this.graph.connectionHandler.start(this.state, pt.x, pt.y);
this.graph.isMouseDown = true;
mxEvent.consume(evt);
})
);
this.domNode.appendChild(img);
//将节点添加到容器
this.graph.container.appendChild(this.domNode);
this.redrawTools();
};
//重绘
mxVertexToolHandler.prototype.redraw = function()
{
mxVertexHandler.prototype.redraw.apply(this);
this.redrawTools();
};
//重绘工具
mxVertexToolHandler.prototype.redrawTools = function()
{
if (this.state != null && this.domNode != null)
{
var dy = (mxClient.IS_VML && document.compatMode == 'CSS1Compat') ? 20 : 4;
this.domNode.style.left = (this.state.x + this.state.width - 56) + 'px';
this.domNode.style.top = (this.state.y + this.state.height + dy) + 'px';
}
};
//删除元素
mxVertexToolHandler.prototype.destroy = function(sender, me)
{
mxVertexHandler.prototype.destroy.apply(this, arguments);
if (this.domNode != null)
{
this.domNode.parentNode.removeChild(this.domNode);
this.domNode = null;
}
};
// 程序在此方法中启动
function main(container) {
// 检查浏览器支持
if (!mxClient.isBrowserSupported()) {
mxUtils.error('Browser is not supported!', 200, false);
} else {
// 在容器中创建图形
var graph = new mxGraph(container);
graph.setConnectable(true);
graph.connectionHandler.createTarget = true;
graph.createHandler = function(state) {
if (state != null &&
this.model.isVertex(state.cell)) {
return new mxVertexToolHandler(state);
}
return mxGraph.prototype.createHandler.apply(this, arguments);
};
//还可以将图形设置成自适应大小
//graph.setResizeContainer(true);
//允许弹性选项
//new mxRubberband(graph);
// 在图形中创建默认组件
var parent = graph.getDefaultParent();
//开启模型的事务
graph.getModel().beginUpdate();
try {
//在图形中插入组件
var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
var e1 = graph.insertEdge(parent, null, '', v1, v2);
}
finally
{
//事务结束
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- 页面载入时启动程序 -->
<body onload="main(document.getElementById('graphContainer'))">
<!-- 创建带网格壁纸和曲线的一个容器 -->
<div id="graphContainer"
style="overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
</div>
</body>
</html>