java对PNG图片圆角处理 保持PNG透明背景
http://my.oschina.net/u/2358721/blog/634042
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Java代码 /* * 圆角处理 * @param BufferedImage * @param cornerRadius * */ public static String makeRoundedCorner(String srcImageFile, String result, String type, int cornerRadius) { try { BufferedImage image = ImageIO.read(new File(srcImageFile)); int w = image.getWidth(); int h = image.getHeight(); BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB); Graphics2D g2 = output.createGraphics(); output = g2.getDeviceConfiguration().createCompatibleImage(w, h, Transparency.TRANSLUCENT); g2.dispose(); g2 = output.createGraphics(); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.fillRoundRect(0, 0,w, h, cornerRadius, cornerRadius); g2.setComposite(AlphaComposite.SrcIn); g2.drawImage(image, 0, 0, w, h, null); g2.dispose(); ImageIO.write(output, type, new File(result)); return result; } catch (IOException e) { e.printStackTrace(); } return null; } |
