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String _generateTooltipTemplate() {
if (widget.legends.isEmpty) {
return '''
function(params) {
var item = params[0];
var value = Array.isArray(item.value) ? item.value[1] : item.value;
return item.name + '<br/>' +
'<span style="display:inline-block;margin-right:5px;width:8px;height:8px;border-radius:50%;background:' + item.color + '"></span>' +
item.seriesName + ' ' + (value ? value.toFixed(1) : '-') + ' ${widget.unit}';
} ''';
}
// 为多个系列生成模板
String jsFunction = '''function(params) {var result = params[0].name + '<br/>'; ''';
for (int i = 0; i < widget.legends.length; i++) {
jsFunction += '''
var item${i} = params[${i}];
var value${i} = Array.isArray(item${i}.value) ? item${i}.value[1] : item${i}.value;
result += '<span style="display:inline-block;margin-right:5px;width:8px;height:8px;border-radius:50%;background:' + item${i}.color + '"></span>' +
item${i}.seriesName + ' ' + (value${i} ? value${i}.toFixed(1) : '-') + ' ${widget.unit}' + '<br/>';''';
}
jsFunction += '''
return result;
}''';
return jsFunction;
}
"tooltip": {
"trigger": "axis",
"triggerOn": "mousemove|click",
"alwaysShowContent": false,
'formatter': _generateTooltipTemplate(),
"enterable": false,
"confine": true,
"hideDelay": 100,
"axisPointer": {"type": "line", "animation": false}
}
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