1. 图片裁剪工具 - 椭圆

#bysocket

Author: BYSocket

src/org/javacore/img/ImgCircleCut.java

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+package org.javacore.img;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.geom.Ellipse2D;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+/*
+ * Copyright [2015] [Jeff Lee]
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @author Jeff Lee
+ * @since 2016-06-28 14:05:26
+ * 图片裁成椭圆
+ */
+public class ImgCircleCut {
+
+    public static boolean ImgCircleCut(String srcFile, String targetFile) {
+        try {
+            // 获取img的BufferedImage对象,可以考虑创建不带透明色的BufferedImage对象:BufferedImage.TYPE_INT_ARGB
+            BufferedImage srcBi = ImageIO.read(new File(srcFile));
+            // 创建一个带透明色的BufferedImage对象
+            BufferedImage targetBi = new BufferedImage(srcBi.getWidth(), srcBi.getHeight(),
+                    BufferedImage.TYPE_INT_ARGB);
+            // 获取img窗体矩形定义的椭圆
+            Ellipse2D.Double shape = new Ellipse2D.Double(0, 0,
+                    srcBi.getWidth(), srcBi.getHeight());
+            // 创建目标图的Graphics2D对象
+            Graphics2D g2 = targetBi.createGraphics();
+            // 创建不透明 SRC_OVER 规则的 AlphaComposite 对象
+            AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.9f);
+            g2.setComposite(ac);
+            g2.setBackground(new Color(22, 2, 2, 0));
+            // 是圆形 还是 椭圆 自定义参数
+            g2.fill3DRect(200, 200, 180, 80, false);
+            g2.setClip(shape);
+            g2.drawImage(srcBi, 0, 0, null);
+            g2.dispose();
+            ImageIO.write(targetBi, "png", new File(targetFile));
+        } catch (IOException e) {
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
+
+    public static void main(String[] args) {
+        ImgCircleCut("/jee/java-core-learning-example/src/resources/6890948.png","/jee/java-core-learning-example/src/resources/111.png");
+    }
+}