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如何在ChartPanel上绘制图形？

[英]How do I draw graphics on top a ChartPanel?

原文 2014-01-17 05:40:30 1 1 java/ graphics/ jfreechart/ mouselistener

I have a ChartPanel object displaying some information, but I would like to be able to use a MouseListener interface to draw on top of it. 我有一个ChartPanel对象显示一些信息，但我希望能够使用MouseListener接口在其上绘制。 I'd imagine I would just have to call some sort of "repaint()" method at the end of the interface methods and perform some override, but after spending considerable time researching I haven't a clue how to go about doing this. 我想我只需要在接口方法的末尾调用某种“repaint（）”方法并执行一些覆盖，但是在花了相当多的时间研究之后，我不知道如何去做这个。 Is this even possible? 这甚至可能吗？ Any insight or advice? 任何见解或建议？

1 个解决方案

You can create a class that implements the Overlay interface and then add it to the ChartPanel using the addOverlay(Overlay) method. 您可以创建一个实现Overlay接口的类，然后使用addOverlay（Overlay）方法将其添加到ChartPanel。 Everything that the overlay draws will be drawn after (so on top of) the chart. 叠加绘制的所有内容都将在图表之后绘制（因此在顶部）。

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