js畫圖開發庫--mxgraph--[labels-标簽.html]
<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
<meta http-equiv=Content-Type content="text/html;charset=utf-8">
<title>标簽</title>
<!-- 如果本檔案的包與src不是在同一個目錄,就要将basepath設定到src目錄下 -->
<script type="text/javascript">
mxBasePath = '../src';
</script>
<!-- 引入支援庫檔案 -->
<script type="text/javascript" src="../src/js/mxClient.js"></script>
<!-- 示例代碼 -->
<script type="text/javascript">
//程式在此啟動
function main(container)
{
// 檢測浏覽器相容性
if (!mxClient.isBrowserSupported())
{
mxUtils.error('Browser is not supported!', 200, false);
}
else
{
// 修正不同浏覽器的裁剪方式
mxClient.NO_FO = mxClient.NO_FO || mxClient.IS_SF || mxClient.IS_GC;
// 在容器中建立圖形
var graph = new mxGraph(container);
graph.setTooltips(true);
graph.htmlLabels = true;
graph.vertexLabelsMovable = true;
new mxRubberband(graph);
new mxKeyHandler(graph);
graph.isCellLocked = function(cell)
{
return this.isCellsLocked();
};
graph.isCellResizable = function(cell)
{
var geo = this.model.getGeometry(cell);
return geo == null || !geo.relative;
};
// 截去的标簽内多餘的文字（隻顯示标簽寬度内的文字）
graph.getLabel = function(cell)
{
var label = (this.labelsVisible) ? this.convertValueToString(cell) : '';
var geometry = this.model.getGeometry(cell);
if (!this.model.isCollapsed(cell) && geometry != null && (geometry.offset == null ||
(geometry.offset.x == 0 && geometry.offset.y == 0)) && this.model.isVertex(cell) &&
geometry.width >= 2)
{
var style = this.getCellStyle(cell);
var fontSize = style[mxConstants.STYLE_FONTSIZE] || mxConstants.DEFAULT_FONTSIZE;
var max = geometry.width / (fontSize * 0.625);
if (max < label.length)
{
return label.substring(0, max) + '...';
}
}
return label;
};
// 是否折疊
graph.isWrapping = function(cell)
{
return this.model.isCollapsed(cell);
};
// 标簽是否被裁剪
graph.isLabelClipped = function(cell)
{
var geometry = this.model.getGeometry(cell);
return geometry != null && !geometry.relative && (geometry.offset == null ||
(geometry.offset.x == 0 && geometry.offset.y == 0));
};
// 建立預設窗體
var parent = graph.getDefaultParent();
// 開啟更新事務
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, 'vertexLabelsMovable', 20, 20, 80, 30);
// 子标簽的頂點
var label11 = graph.insertVertex(v1, null, 'Label1', 0.5, 1, 0, 0, null, true);
var label12 = graph.insertVertex(v1, null, 'Label2', 0.5, 0, 0, 0, null, true);
var v2 = graph.insertVertex(parent, null, 'Wrapping and clipping is enabled only if the cell is collapsed, otherwise the label is truncated if there is no manual offset.', 200, 150, 80, 30);
v2.geometry.alternateBounds = new mxRectangle(0, 0, 80, 30);
var e1 = graph.insertEdge(parent, null, 'edgeLabelsMovable', v1, v2);
// 子标簽的頂點
var label21 = graph.insertVertex(v2, null, 'Label1', 0.5, 1, 0, 0, null, true);
var label22 = graph.insertVertex(v2, null, 'Label2', 0.5, 0, 0, 0, null, true);
}
finally
{
// 更新事務結束
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- 頁面載入時啟動程式 -->
<body οnlοad="main(document.getElementById('graphContainer'))">
<!-- 建立帶網格桌面和曲線的一個容器 -->
<div id="graphContainer"
style="position:absolute;top:0px;left:0px;overflow:hidden;width:100%;height:100%;background:url('editors/images/grid.gif')">
</div>
</body>
</html>
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