RoundRectangle2D剪辑不是很流畅
我有一个JPanel,我想剪角,使它有圆角。
这就是我在做的事情。
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); g.setColor(color); Shape s = new RoundRectangle2D.Double(0, 0, width, height, arc, arc); g.setClip(s);
请注意,我正在将clipping
设置为RoundRectangle2D。 此外,我设置anti-aliasing
仍然我的圆形边缘真的是锯齿状。
软剪辑示例此链接有一种方法可以为图像执行柔和的圆角边缘。 我如何将其应用于JPanel?
因为剪切没有别名,所以您会看到锯齿状边缘。 尝试边框:
p.setBorder(new RoundedBorder(p.getBackground(), 2, 16));
其中RoundedBorder是从文本气泡类改编而来的:
class RoundedBorder extends AbstractBorder { private Color color; private int thickness = 4; private int radii = 8; private Insets insets = null; private BasicStroke stroke = null; private int strokePad; private int pointerPad = 4; RenderingHints hints; RoundedBorder( Color color, int thickness, int radii) { this.thickness = thickness; this.radii = radii; this.color = color; stroke = new BasicStroke(thickness); strokePad = thickness / 2; hints = new RenderingHints( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); int pad = radii + strokePad; int bottomPad = pad + strokePad; insets = new Insets(pad, pad, bottomPad, pad); } @Override public Insets getBorderInsets(Component c) { return insets; } @Override public Insets getBorderInsets(Component c, Insets insets) { return getBorderInsets(c); } @Override public void paintBorder( Component c, Graphics g, int x, int y, int width, int height) { Graphics2D g2 = (Graphics2D) g; int bottomLineY = height - thickness; RoundRectangle2D.Double bubble = new RoundRectangle2D.Double( 0 + strokePad, 0 + strokePad, width - thickness, bottomLineY, radii, radii); Area area = new Area(bubble); g2.setRenderingHints(hints); Area spareSpace = new Area(new Rectangle(0, 0, width, height)); spareSpace.subtract(area); g2.setClip(spareSpace); g2.clearRect(0, 0, width, height); g2.setClip(null); g2.setColor(color); g2.setStroke(stroke); g2.draw(area); } } }
如果您想要消除锯齿的角落,请使用TexturePaint而不是剪裁。 它与剪切相同,但速度更快。 将它与抗别名一起使用。
只是谷歌“ TexturePaint例子 ”。