1 files changed, 343 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.tests/unittests/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SwtUtilsTest.java b/eclipse/plugins/com.android.ide.eclipse.tests/unittests/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SwtUtilsTest.java
new file mode 100644
index 000000000..de7999c24
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.tests/unittests/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SwtUtilsTest.java
@@ -0,0 +1,343 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
+ *
+ * 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.
+ */
+
+package com.android.ide.eclipse.adt.internal.editors.layout.gle2;
+
+import com.android.ide.common.api.Rect;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.PaletteData;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import junit.framework.TestCase;
+
+public class SwtUtilsTest extends TestCase {
+
+    public void testImageConvertNoAlpha() throws Exception {
+        // Note: We need an TYPE_INT_ARGB SWT image here (instead of TYPE_INT_ARGB_PRE) to
+        // prevent the alpha from being pre-multiplied into the RGB when drawing the image.
+        BufferedImage inImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
+        Graphics g = inImage.getGraphics();
+        g.setColor(new Color(0xAA112233, true));
+        g.fillRect(0, 0, inImage.getWidth(), inImage.getHeight());
+        g.dispose();
+
+        Shell shell = new Shell();
+        Display display = shell.getDisplay();
+
+        // Convert the RGB image, effectively discarding the alpha channel entirely.
+        Image outImage = SwtUtils.convertToSwt(display, inImage, false, -1);
+        assertNotNull(outImage);
+
+        ImageData outData = outImage.getImageData();
+        assertEquals(inImage.getWidth(), outData.width);
+        assertEquals(inImage.getHeight(), outData.height);
+        assertNull(outData.alphaData);
+        assertEquals(SWT.TRANSPARENCY_NONE, outData.getTransparencyType());
+
+        PaletteData inPalette  = SwtUtils.getAwtPaletteData(inImage.getType());
+        PaletteData outPalette = outData.palette;
+
+        for (int y = 0; y < outData.height; y++) {
+            for (int x = 0; x < outData.width; x++) {
+                // Note: we can't compare pixel directly as integers since convertToSwt() might
+                // have changed the RGBA ordering depending on the platform (e.g. it will on
+                // Windows.)
+                RGB expected = inPalette.getRGB( inImage.getRGB(  x, y));
+                RGB actual   = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+            }
+        }
+
+        // Convert back to AWT and compare with original AWT image
+        BufferedImage awtImage = SwtUtils.convertToAwt(outImage);
+        assertNotNull(awtImage);
+
+        // Both image have the same RGBA ordering
+        assertEquals(BufferedImage.TYPE_INT_ARGB, inImage.getType());
+        assertEquals(BufferedImage.TYPE_INT_ARGB, awtImage.getType());
+
+        int awtAlphaMask = 0xFF000000;
+
+        for (int y = 0; y < outData.height; y++) {
+            for (int x = 0; x < outData.width; x++) {
+                // Note: we can compare pixels as integers since we just
+                // asserted both images have the same color image type except
+                // for the content of the alpha channel.
+                int actual = awtImage.getRGB(x, y);
+                assertEquals(awtAlphaMask, actual & awtAlphaMask);
+                assertEquals(awtAlphaMask | inImage.getRGB(x, y), awtImage.getRGB(x, y));
+            }
+        }
+    }
+
+    public void testImageConvertGlobalAlpha() throws Exception {
+        BufferedImage inImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
+        Graphics g = inImage.getGraphics();
+        g.setColor(new Color(0xAA112233, true));
+        g.fillRect(0, 0, inImage.getWidth(), inImage.getHeight());
+        g.dispose();
+
+        Shell shell = new Shell();
+        Display display = shell.getDisplay();
+
+        Image outImage = SwtUtils.convertToSwt(display, inImage, false, 128);
+        assertNotNull(outImage);
+
+        ImageData outData = outImage.getImageData();
+        assertEquals(inImage.getWidth(), outData.width);
+        assertEquals(inImage.getHeight(), outData.height);
+        assertEquals(128, outData.alpha);
+        assertEquals(SWT.TRANSPARENCY_NONE, outData.getTransparencyType());
+        assertNull(outData.alphaData);
+
+        PaletteData inPalette  = SwtUtils.getAwtPaletteData(inImage.getType());
+        PaletteData outPalette = outData.palette;
+
+        for (int y = 0; y < outData.height; y++) {
+            for (int x = 0; x < outData.width; x++) {
+
+                RGB expected = inPalette.getRGB( inImage.getRGB(  x, y));
+                RGB actual   = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+            }
+        }
+    }
+
+    public void testImageConvertAlpha() throws Exception {
+        BufferedImage inImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
+        Graphics g = inImage.getGraphics();
+        g.setColor(new Color(0xAA112233, true));
+        g.fillRect(0, 0, inImage.getWidth(), inImage.getHeight());
+        g.dispose();
+
+        Shell shell = new Shell();
+        Display display = shell.getDisplay();
+
+        Image outImage = SwtUtils.convertToSwt(display, inImage, true, -1);
+        assertNotNull(outImage);
+
+        ImageData outData = outImage.getImageData();
+        assertEquals(inImage.getWidth(), outData.width);
+        assertEquals(inImage.getHeight(), outData.height);
+        assertEquals(SWT.TRANSPARENCY_ALPHA, outData.getTransparencyType());
+
+        PaletteData inPalette  = SwtUtils.getAwtPaletteData(inImage.getType());
+        PaletteData outPalette = outData.palette;
+
+        for (int y = 0; y < outData.height; y++) {
+            for (int x = 0; x < outData.width; x++) {
+                RGB expected = inPalette.getRGB( inImage.getRGB(  x, y));
+                RGB actual   = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+
+                // Note: >> instead of >>> since we will compare with byte (a signed number)
+                int expectedAlpha = inImage.getRGB(x, y) >> 24;
+                int actualAlpha = outData.alphaData[y * outData.width + x];
+                assertEquals(expectedAlpha, actualAlpha);
+            }
+        }
+    }
+
+    public void testImageConvertAlphaMultiplied() throws Exception {
+        BufferedImage inImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
+        Graphics g = inImage.getGraphics();
+        g.setColor(new Color(0xAA112233, true));
+        g.fillRect(0, 0, inImage.getWidth(), inImage.getHeight());
+        g.dispose();
+
+        Shell shell = new Shell();
+        Display display = shell.getDisplay();
+        Image outImage = SwtUtils.convertToSwt(display, inImage, true, 32);
+        assertNotNull(outImage);
+
+        // Expected alpha is 0xAA from the AWT input image pre-multiplied by 32 in convertToSwt.
+        int expectedAlpha = (0xAA * 32) >> 8;
+
+        ImageData outData = outImage.getImageData();
+        assertEquals(inImage.getWidth(), outData.width);
+        assertEquals(inImage.getHeight(), outData.height);
+        assertEquals(SWT.TRANSPARENCY_ALPHA, outData.getTransparencyType());
+
+        PaletteData inPalette  = SwtUtils.getAwtPaletteData(inImage.getType());
+        PaletteData outPalette = outData.palette;
+
+        for (int y = 0; y < outData.height; y++) {
+            for (int x = 0; x < outData.width; x++) {
+                RGB expected = inPalette.getRGB( inImage.getRGB(  x, y));
+                RGB actual   = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+
+                byte actualAlpha = outData.alphaData[y * outData.width + x];
+                assertEquals(expectedAlpha, actualAlpha);
+            }
+        }
+    }
+
+    public final void testSetRectangle() {
+        Rect r = new Rect(1, 2, 3, 4);
+        Rectangle r2 = new Rectangle(3, 4, 20, 30);
+        SwtUtils.set(r, r2);
+
+        assertEquals(3, r.x);
+        assertEquals(4, r.y);
+        assertEquals(20, r.w);
+        assertEquals(30, r.h);
+    }
+
+    public final void testRectRectangle() {
+        Rectangle r = new Rectangle(3, 4, 20, 30);
+        Rect r2 = SwtUtils.toRect(r);
+
+        assertEquals(3, r2.x);
+        assertEquals(4, r2.y);
+        assertEquals(20, r2.w);
+        assertEquals(30, r2.h);
+    }
+
+    public final void testCropEmpty() {
+        Image image = createSampleImage(256, 256);
+        Image result = SwtUtils.drawRectangles(image, Collections.<Rectangle> emptyList(), null,
+                1.0, (byte) 121);
+        assertNull(result);
+    }
+
+    public final void testCrop1() {
+        Image image = createSampleImage(256, 256);
+
+        byte alpha = 121;
+        double scale = 1.0;
+
+        List<Rectangle> items = new ArrayList<Rectangle>();
+        items.add(new Rectangle(30, 60, 20, 20));
+        Image result =
+            SwtUtils.drawRectangles(image, items, ImageUtils.getBoundingRectangle(items),
+                    scale, alpha);
+
+        assertNotNull(result);
+        ImageData outData = result.getImageData();
+        assertEquals(20, outData.width);
+        assertEquals(20, outData.height);
+
+        PaletteData outPalette = outData.palette;
+        assertNotNull(outPalette);
+
+        byte[] outAlphaData = outData.alphaData;
+        assertNotNull(outAlphaData);
+
+        for (int y = 0; y < 20; y++) {
+            for (int x = 0; x < 20; x++) {
+                int r = y + 60;
+                int g = x + 30;
+
+                RGB expected = new RGB(r, g, 0);
+                RGB actual = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+
+                byte actualAlpha = outAlphaData[y*20+x];
+                assertEquals(alpha, actualAlpha);
+            }
+        }
+    }
+
+    public final void testCrop2() {
+        Image image = createSampleImage(256, 256);
+
+        byte alpha = 121;
+        double scale = 1.0;
+
+        List<Rectangle> items = new ArrayList<Rectangle>();
+        items.add(new Rectangle(10, 10, 20, 20));
+        items.add(new Rectangle(110, 80, 20, 20));
+        Image result =
+            SwtUtils.drawRectangles(image, items, ImageUtils.getBoundingRectangle(items),
+                    scale, alpha);
+
+        assertNotNull(result);
+        ImageData outData = result.getImageData();
+        assertEquals(120, outData.width);
+        assertEquals(90, outData.height);
+
+        PaletteData outPalette = outData.palette;
+        assertNotNull(outPalette);
+
+        byte[] outAlphaData = outData.alphaData;
+        assertNotNull(outAlphaData);
+
+        for (int y = 0; y < 20; y++) {
+            for (int x = 0; x < 20; x++) {
+                int r = y + 10;
+                int g = x + 10;
+
+                RGB expected = new RGB(r, g, 0);
+                RGB actual = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+
+                assertEquals(alpha, outAlphaData[y*120+x]);
+            }
+        }
+        for (int y = 70; y < 90; y++) {
+            for (int x = 100; x < 120; x++) {
+                int r = y + 10;
+                int g = x + 10;
+
+                RGB expected = new RGB(r, g, 0);
+                RGB actual = outPalette.getRGB(outData.getPixel(x, y));
+                assertEquals(expected, actual);
+
+                assertEquals(alpha, outAlphaData[y*120+x]);
+            }
+        }
+        assertEquals(0, outAlphaData[40]);
+    }
+
+    /**
+     * Crop test utility: Create a sample image patterned with red=y and green=x, suitable
+     * for checking that in image copying operations we've copied and scaled the right
+     * bits. (Obviously the red/green will be mod'ed with 256).
+     *
+     * @param imageWidth the width of the target image
+     * @param imageHeight the height of the target image
+     * @return a new image with a red/green pattern
+     */
+    private Image createSampleImage(int imageWidth, int imageHeight) {
+        Shell shell = new Shell();
+        Display display = shell.getDisplay();
+
+        ImageData data = new ImageData(imageWidth, imageHeight, 32, new PaletteData(0x00FF0000,
+                0x0000FF00, 0x000000FF));
+        for (int y = 0; y < imageHeight; y++) {
+            for (int x = 0; x < imageWidth; x++) {
+                int pixelValue = (y & 0xFF) << 16 | (x & 0xFF) << 8;
+                data.setPixel(x, y, pixelValue);
+            }
+        }
+        Image image = new Image(display, data);
+        return image;
+    }
+}