8151269: [TEST] add test covering getSource() method for multiresolution image

Reviewed-by: alexsch, serb

jdk/test/java/awt/image/multiresolution/MultiresolutionSourceTest.java

@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+
+/*
+ * @test
+ * @bug 8151269
+ * @author a.stepanov
+ * @summary Multiresolution image: check that the base resolution variant
+ *          source is passed to the corresponding ImageConsumer
+ * @run main MultiresolutionSourceTest
+ */
+
+import java.awt.*;
+import java.awt.image.*;
+
+public class MultiresolutionSourceTest {
+
+    private static class Checker implements ImageConsumer {
+
+        private final int refW, refH, refType;
+        private final boolean refHasAlpha;
+        private final Color refColor;
+
+        public Checker(int     w,
+                       int     h,
+                       Color   c,
+                       boolean hasAlpha,
+                       int     transferType) {
+            refW = w;
+            refH = h;
+            refColor = c;
+            refHasAlpha = hasAlpha;
+            refType = transferType;
+        }
+
+        @Override
+        public void imageComplete(int status) {}
+
+        @Override
+        public void setColorModel(ColorModel model) {
+
+            boolean a = model.hasAlpha();
+            if (a != refHasAlpha) {
+                throw new RuntimeException("invalid hasAlpha: " + a);
+            }
+
+            int tt = model.getTransferType();
+            if (tt != refType) {
+                throw new RuntimeException("invalid transfer type: " + tt);
+            }
+        }
+
+        @Override
+        public void setDimensions(int w, int h) {
+
+            if (w != refW) { throw new RuntimeException("invalid width: " + w +
+                ", expected: " + refW); }
+
+            if (h != refH) { throw new RuntimeException("invalid height: " + h +
+                ", expected: " + refH); }
+        }
+
+        @Override
+        public void setHints(int flags) {}
+
+        @Override
+        public void setPixels(int x, int y, int w, int h, ColorModel model,
+                              byte pixels[], int offset, int scansize) {
+
+            for (int i = 0; i < pixels.length; i++) {
+                int p = pixels[i];
+                // just in case...
+                Color c = model.hasAlpha() ?
+                    new Color(model.getRed  (p),
+                              model.getGreen(p),
+                              model.getBlue (p),
+                              model.getAlpha(p)) :
+                    new Color(model.getRGB(p));
+
+                if (!c.equals(refColor)) {
+                    throw new RuntimeException("invalid color: " + c +
+                        ", expected: " + refColor);
+                }
+            }
+        }
+
+        @Override
+        public void setPixels(int x, int y, int w, int h, ColorModel model,
+                              int pixels[], int offset, int scansize) {
+
+            for (int i = 0; i < pixels.length; i++) {
+                int p = pixels[i];
+                Color c = model.hasAlpha() ?
+                    new Color(model.getRed  (p),
+                              model.getGreen(p),
+                              model.getBlue (p),
+                              model.getAlpha(p)) :
+                    new Color(model.getRGB(p));
+
+                if (!c.equals(refColor)) {
+                    throw new RuntimeException("invalid color: " + c +
+                        ", expected: " + refColor);
+                }
+            }
+        }
+
+        @Override
+        public void setProperties(java.util.Hashtable props) {}
+    }
+
+    private static BufferedImage generateImage(int w, int h, Color c, int type) {
+
+        BufferedImage img = new BufferedImage(w, h, type);
+        Graphics g = img.getGraphics();
+        g.setColor(c);
+        g.fillRect(0, 0, w, h);
+        return img;
+    }
+
+    public static void main(String[] args) {
+
+        final int w1 = 20, w2 = 100, h1 = 30, h2 = 50;
+        final Color
+            c1 = new Color(255, 0, 0, 100), c2 = Color.BLACK, gray = Color.GRAY;
+
+        BufferedImage img1 =
+            generateImage(w1, h1, c1, BufferedImage.TYPE_INT_ARGB);
+
+        BufferedImage dummy =
+            generateImage(w1 + 5, h1 + 5, gray, BufferedImage.TYPE_BYTE_GRAY);
+
+        BufferedImage img2 =
+            generateImage(w2, h2, c2, BufferedImage.TYPE_BYTE_BINARY);
+
+        BufferedImage vars[] = new BufferedImage[] {img1, dummy, img2};
+
+        // default base image index (zero)
+        BaseMultiResolutionImage mri1 = new BaseMultiResolutionImage(vars);
+        // base image index = 2
+        BaseMultiResolutionImage mri2 = new BaseMultiResolutionImage(2, vars);
+
+        // do checks
+        mri1.getSource().startProduction(
+                new Checker(w1, h1, c1, true, DataBuffer.TYPE_INT));
+
+        mri2.getSource().startProduction(
+                new Checker(w2, h2, c2, false, DataBuffer.TYPE_BYTE));
+    }
+}