original

[gb-231r1-is01/GB_2.3_IS01.git] / cts / tests / tests / graphics / src / android / graphics / cts / EmbossMaskFilterTest.java

diff --git a/cts/tests/tests/graphics/src/android/graphics/cts/EmbossMaskFilterTest.java b/cts/tests/tests/graphics/src/android/graphics/cts/EmbossMaskFilterTest.java
new file mode 100644 (file)
index 0000000..10bfbad
--- /dev/null
+++ b/cts/tests/tests/graphics/src/android/graphics/cts/EmbossMaskFilterTest.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package android.graphics.cts;
+
+import dalvik.annotation.TestLevel;
+import dalvik.annotation.TestTargetClass;
+import dalvik.annotation.TestTargetNew;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.EmbossMaskFilter;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.Rect;
+import android.graphics.Bitmap.Config;
+
+import junit.framework.TestCase;
+
+@TestTargetClass(EmbossMaskFilter.class)
+public class EmbossMaskFilterTest extends TestCase {
+    private static final int BITMAP_WIDTH = 100;
+    private static final int BITMAP_HEIGHT = 100;
+    private static final int START_X = 10;
+    private static final int END_X = BITMAP_WIDTH - START_X;
+    private static final int CENTER_X = (START_X + END_X) / 2;
+    private static final int CENTER_Y = BITMAP_HEIGHT / 2;
+    private static final int STROKE_WIDTH = 10;
+
+    @TestTargetNew(
+        level = TestLevel.SUFFICIENT,
+        notes = "Javadoc is incomplete, cannot test all parameters",
+        method = "EmbossMaskFilter",
+        args = {float[].class, float.class, float.class, float.class}
+    )
+    public void testEmbossMaskFilter() {
+        EmbossMaskFilter filter = new EmbossMaskFilter(new float[] { 1, 1, 1 }, 0.5f, 8, 3);
+
+        Paint paint = new Paint();
+        paint.setMaskFilter(filter);
+        paint.setStyle(Paint.Style.STROKE);
+        paint.setStrokeWidth(STROKE_WIDTH);
+        paint.setColor(Color.GRAY);
+
+        Path path = new Path();
+        path.moveTo(START_X, CENTER_Y);
+        path.lineTo(END_X, CENTER_Y);
+
+        Bitmap bitmap = Bitmap.createBitmap(BITMAP_WIDTH, BITMAP_HEIGHT, Config.ARGB_8888);
+        bitmap.eraseColor(Color.BLACK);
+
+        Canvas c = new Canvas(bitmap);
+        c.drawPath(path, paint);
+
+        Rect top = new Rect(0, 0, BITMAP_WIDTH, CENTER_Y);
+        Rect bottom = new Rect(0, CENTER_Y, BITMAP_WIDTH, BITMAP_HEIGHT);
+        Rect left = new Rect(0, 0, CENTER_X, BITMAP_HEIGHT);
+        Rect right = new Rect(CENTER_X, 0, BITMAP_WIDTH, BITMAP_HEIGHT);
+
+        assertTrue(brightness(bitmap, top) > brightness(bitmap, bottom));
+        assertTrue(brightness(bitmap, left) > brightness(bitmap, right));
+
+        // emboss must not change anything outside the drawn shape
+        top.bottom = CENTER_Y - STROKE_WIDTH / 2;
+        assertEquals(0, brightness(bitmap, top));
+        bottom.top = CENTER_Y + STROKE_WIDTH / 2;
+        assertEquals(0, brightness(bitmap, bottom));
+        left.right = START_X;
+        assertEquals(0, brightness(bitmap, left));
+        right.left = END_X;
+        assertEquals(0, brightness(bitmap, right));
+    }
+
+    /**
+     * Calculate the cumulative brightness of all pixels in the given rectangle.
+     * Ignores alpha channel. Maximum returned value depends on the size of the rectangle.
+     */
+    private long brightness(Bitmap b, Rect rect) {
+        long color = 0;
+        for (int y = rect.top; y < rect.bottom; y++) {
+            for (int x = rect.left; x < rect.right; x++) {
+                int pixel = b.getPixel(x, y);
+                color += Color.red(pixel) + Color.green(pixel) + Color.blue(pixel);
+            }
+        }
+        return color;
+    }
+}