toolbarmarginborder.java

来自「用于java swing的皮肤软件」· Java 代码 · 共 50 行

package com.digitprop.tonic;

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.border.*;

/**	A border which is like a Margin border but it will only honor the margin
	 	if the margin has been explicitly set by the developer.
*/	
class ToolBarMarginBorder extends EmptyBorder
{

	public ToolBarMarginBorder()
	{
		super(3, 3, 3, 3); // hardcoded margin for JLF requirements.
	}

	public Insets getBorderInsets(Component c)
	{
		return getBorderInsets(c, new Insets(0, 0, 0, 0));
	}

	public Insets getBorderInsets(Component c, Insets insets)
	{
		Insets margin= null;

		if (c instanceof AbstractButton)
		{
			margin= ((AbstractButton) c).getMargin();
		}
		if (margin == null || margin instanceof UIResource)
		{
			// default margin so replace
			insets.left= left;
			insets.top= top;
			insets.right= right;
			insets.bottom= bottom;
		}
		else
		{
			// Margin which has been explicitly set by the user.
			insets.left= margin.left;
			insets.top= margin.top;
			insets.right= margin.right;
			insets.bottom= margin.bottom;
		}
		return insets;
	}
}