original

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

diff --git a/cts/tests/tests/graphics/src/android/graphics/cts/BlurMaskFilterTest.java b/cts/tests/tests/graphics/src/android/graphics/cts/BlurMaskFilterTest.java
new file mode 100644 (file)
index 0000000..64f56a5
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+++ b/cts/tests/tests/graphics/src/android/graphics/cts/BlurMaskFilterTest.java
@@ -0,0 +1,91 @@
+/*
+ * 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.BlurMaskFilter;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.Bitmap.Config;
+import android.graphics.BlurMaskFilter.Blur;
+import android.util.Log;
+
+import junit.framework.TestCase;
+
+@TestTargetClass(BlurMaskFilter.class)
+public class BlurMaskFilterTest extends TestCase {
+    private static final int OFFSET = 10;
+    private static final int RADIUS = 5;
+    private static final int BITMAP_WIDTH = 100;
+    private static final int BITMAP_HEIGHT = 100;
+    private static final int CENTER = BITMAP_HEIGHT / 2;
+
+    @TestTargetNew(
+        level = TestLevel.COMPLETE,
+        method = "BlurMaskFilter",
+        args = {float.class, android.graphics.BlurMaskFilter.Blur.class}
+    )
+    public void testBlurMaskFilter(){
+        BlurMaskFilter filter = new BlurMaskFilter(RADIUS, Blur.NORMAL);
+        Paint paint = new Paint();
+        paint.setMaskFilter(filter);
+        paint.setColor(Color.RED);
+        Bitmap b = Bitmap.createBitmap(BITMAP_WIDTH, BITMAP_HEIGHT, Config.ARGB_8888);
+        b.eraseColor(Color.TRANSPARENT);
+        Canvas canvas = new Canvas(b);
+        canvas.drawRect(CENTER - OFFSET, CENTER - OFFSET, CENTER + OFFSET, CENTER + OFFSET, paint);
+        for (int x = 0; x < CENTER; x++) {
+            for (int y = 0; y < CENTER; y++) {
+                if (x < CENTER - OFFSET - RADIUS || y < CENTER - OFFSET - RADIUS) {
+                    // check that color didn't bleed (much) beyond radius
+                    checkQuadrants(Color.TRANSPARENT, b, x, y, 5);
+                } else if (x > CENTER - OFFSET + RADIUS && y > CENTER - OFFSET + RADIUS) {
+                    // check that color didn't wash out (much) in the center
+                    checkQuadrants(Color.RED, b, x, y, 5);
+                } else {
+                    // check blur zone, color should remain, alpha varies
+                    checkQuadrants(Color.RED, b, x, y, 255);
+                }
+            }
+        }
+    }
+
+    private void checkQuadrants(int color, Bitmap bitmap, int x, int y, int alphaTolerance) {
+        int right = bitmap.getWidth() - 1;
+        int bottom = bitmap.getHeight() - 1;
+        try {
+            checkColor(color, bitmap.getPixel(x, y), alphaTolerance);
+            checkColor(color, bitmap.getPixel(right - x, y), alphaTolerance);
+            checkColor(color, bitmap.getPixel(x, bottom - y), alphaTolerance);
+            checkColor(color, bitmap.getPixel(right - x, bottom - y), alphaTolerance);
+        } catch (Error e) {
+            Log.w(getClass().getName(), "Failed for coordinates (" + x + ", " + y + ")");
+            throw e;
+        }
+    }
+
+    private void checkColor(int expected, int actual, int alphaTolerance) {
+        assertEquals(Color.red(expected), Color.red(actual));
+        assertEquals(Color.green(expected), Color.green(actual));
+        assertEquals(Color.blue(expected), Color.blue(actual));
+        assertEquals(Color.alpha(expected), Color.alpha(actual), alphaTolerance);
+    }
+}