Swing 设置Jbutton（图标）无边框，悬浮有线框样式

 

效果

   
     类似eclipse工具栏的效果，无悬浮，按钮无边框，悬浮时候呈现边框

 

实现

 

        this.setOpaque(false);
        this.setBorder(emptyBorder);
        this.setContentAreaFilled(false);
        this.setFocusPainted(false);
        this.setRolloverEnabled(true);

        this.addMouseListener(new MouseAdapter() {

            @Override
            public void mouseEntered(MouseEvent e) {
                if (isRolloverEnabled()) {
                    setBorder(roverBorder);
                }
            }

            @Override
            public void mouseExited(MouseEvent e) {
                if (isRolloverEnabled()) {
                    setBorder(emptyBorder);
                }
            }
        });

 

private Border emptyBorder = BorderFactory.createEmptyBorder(0,0, 0, 0);

 

 

private Color roverBorderColor = Color.gray;
private Border roverBorder = new Border() {

	        public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
	            g.setColor(roverBorderColor);
	            g.drawRect(x, y, width - 1, height - 1);
	        }

	        public Insets getBorderInsets(Component c) {
	            return new Insets(1, 1, 1, 1);
	        }

	        public boolean isBorderOpaque() {
	            return true;
	        }
	    };

 

最终效果：

 

keyword： Swing,JButton,Border