JUNG：取消了顶点标签颜色

问题描述

我可以使用像这样声明的vertexLabelRenderer使选择的顶点标签为红色：

I can make picked vertex labels red using vertexLabelRenderer declared like this:

DefaultVertexLabelRenderer vertexLabelRenderer=new DefaultVertexLabelRenderer(Color.RED);

如何更改取消顶部顶点标签的颜色。构造函数（见下文）仅允许定义未压缩顶点标签。方法setForeground（）不会影响字体颜色。

How do I change color of unpicked vertex labels. Constructor (see below) only allows defining unpicked vertex labels. Also method setForeground() does not affect the font color.

这里是JUNG 2.0.1 API文档：

Here is the JUNG 2.0.1 API document:http://jung.sourceforge.net/site/apidocs/edu/uci/ics/jung/visualization/renderers/DefaultVertexLabelRenderer.html

推荐答案

对于任何人还在搔头这里有两个简单的类

For anyone still scratching their head here's two simple classes that can change an unpicked vertex/edge label color.

public class MyDefaultVertexLaberRenderer extends DefaultVertexLabelRenderer
{
    protected Color unpickedVertexLabelColor = Color.BLACK;

    public MyDefaultVertexLaberRenderer(Color unpickedVertexLabelColor, Color pickedVertexLabelColor)
    {
        super(pickedVertexLabelColor);
        this.unpickedVertexLabelColor = unpickedVertexLabelColor;
    }

    public <V> Component getVertexLabelRendererComponent(JComponent vv, Object value, Font font, boolean isSelected, V vertex)
    {
        super.setForeground(unpickedVertexLabelColor);
        if (isSelected) setForeground(pickedVertexLabelColor);
        super.setBackground(vv.getBackground());
        if (font != null)
        {
            setFont(font);
        }
        else
        {
            setFont(vv.getFont());
        }
        setIcon(null);
        setBorder(noFocusBorder);
        setValue(value);
        return this;
    }
}

public class MyDefaultEdgeLaberRenderer extends DefaultEdgeLabelRenderer
{
    protected Color unpickedEdgeLabelColor = Color.BLACK;

    public MyDefaultEdgeLaberRenderer(Color unpickedEdgeLabelColor, Color pickedEdgeLabelColor)
    {
        super(pickedEdgeLabelColor);
        this.unpickedEdgeLabelColor = unpickedEdgeLabelColor;
    }

    public <E> Component getEdgeLabelRendererComponent(JComponent vv, Object value, Font font, boolean isSelected, E edge)
    {
        super.setForeground(unpickedEdgeLabelColor);
        if (isSelected) setForeground(pickedEdgeLabelColor);
        super.setBackground(vv.getBackground());

        if (font != null)
        {
            setFont(font);
        }
        else
        {
            setFont(vv.getFont());
        }
        setIcon(null);
        setBorder(noFocusBorder);
        setValue(value);
        return this;
    }
}

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