jdk/test/java/awt/GradientPaint/GradientTransformTest.java
changeset 21233 a36ed36d3209
child 39056 d99e63b6d962
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/GradientPaint/GradientTransformTest.java	Tue Oct 22 13:47:45 2013 -0700
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.*;
+import java.awt.MultipleGradientPaint.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+
+/**
+ * @test
+ * @bug 8023483
+ * @summary tests if the transform-parameter is applied correctly when creating
+ *          a gradient.
+ * @author ceisserer
+ */
+public class GradientTransformTest extends Frame {
+    BufferedImage srcImg;
+    Image dstImg;
+
+    public GradientTransformTest() {
+        srcImg = createSrcImage();
+        dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20,
+                20);
+    }
+
+    protected void renderToVI(BufferedImage src, Image dst) {
+        Graphics2D g = (Graphics2D) dst.getGraphics();
+
+        g.setColor(Color.WHITE);
+        g.fillRect(0, 0, dst.getWidth(null), dst.getHeight(null));
+
+        AffineTransform at = new AffineTransform();
+        at.translate(-100, 0);
+
+        g.setPaint(new LinearGradientPaint(new Point2D.Float(100, 0),
+                new Point2D.Float(120, 0), new float[] { 0.0f, 0.75f, 1.0f },
+                new Color[] { Color.red, Color.green, Color.blue },
+                CycleMethod.NO_CYCLE, ColorSpaceType.SRGB, at));
+
+        g.fillRect(-10, -10, 30, 30);
+    }
+
+    public void paint(Graphics g1) {
+        Graphics2D g = (Graphics2D) g1;
+        renderToVI(createSrcImage(), dstImg);
+        g.drawImage(dstImg, 20, 20, null);
+    }
+
+    public void showFrame() {
+        setSize(500, 500);
+        setVisible(true);
+    }
+
+    public void test() {
+        renderToVI(createSrcImage(), dstImg);
+
+        BufferedImage validationImg = new BufferedImage(20, 20,
+                BufferedImage.TYPE_INT_RGB);
+        Graphics2D valG = (Graphics2D) validationImg.getGraphics();
+        valG.drawImage(dstImg, 0, 0, null);
+
+        // Loop over all pixel, and count the different pixel values
+        // encountered.
+        boolean gradientTranslated = false;
+        for (int x = 0; x < validationImg.getWidth() && !gradientTranslated; x++) {
+            for (int y = 0; y < validationImg.getHeight()
+                    && !gradientTranslated; y++) {
+                int rgb = validationImg.getRGB(x, y);
+                if (rgb != -65279) {
+                    gradientTranslated = true;
+                }
+            }
+        }
+
+        if (gradientTranslated) {
+            System.out.println("Passed!");
+        } else {
+            throw new RuntimeException("Test FAILED!");
+        }
+    }
+
+    protected BufferedImage createSrcImage() {
+        BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g = (Graphics2D) bi.getGraphics();
+        g.setColor(Color.YELLOW);
+        g.fillRect(0, 0, 10, 10);
+        g.setColor(Color.black);
+        g.drawLine(0, 0, 10, 10);
+        return bi;
+    }
+
+    public static void main(String[] args) throws Exception {
+        boolean show = (args.length > 0 && "-show".equals(args[0]));
+        final GradientTransformTest t = new GradientTransformTest();
+
+        if (show) {
+            EventQueue.invokeAndWait(new Runnable() {
+                public void run() {
+                    t.showFrame();
+                }
+            });
+        } else {
+            t.test();
+        }
+    }
+}