original

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

diff --git a/cts/tests/tests/graphics/src/android/graphics/cts/LightingColorFilterTest.java b/cts/tests/tests/graphics/src/android/graphics/cts/LightingColorFilterTest.java
new file mode 100644 (file)
index 0000000..0bb2027
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+++ b/cts/tests/tests/graphics/src/android/graphics/cts/LightingColorFilterTest.java
@@ -0,0 +1,98 @@
+/*
+ * 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.LightingColorFilter;
+import android.graphics.Paint;
+import android.graphics.Bitmap.Config;
+
+import junit.framework.TestCase;
+
+@TestTargetClass(LightingColorFilter.class)
+public class LightingColorFilterTest extends TestCase {
+
+    private static final int TOLERANCE = 2;
+
+    @TestTargetNew(
+        level = TestLevel.COMPLETE,
+        method = "LightingColorFilter",
+        args = {int.class, int.class}
+    )
+    public void testLightingColorFilter() {
+        Bitmap bitmap = Bitmap.createBitmap(1, 1, Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+
+        Paint paint = new Paint();
+
+        paint.setColor(Color.MAGENTA);
+        paint.setColorFilter(new LightingColorFilter(Color.WHITE, Color.BLACK));
+        canvas.drawPaint(paint);
+        assertColor(Color.MAGENTA, bitmap.getPixel(0, 0));
+
+        paint.setColor(Color.MAGENTA);
+        paint.setColorFilter(new LightingColorFilter(Color.CYAN, Color.BLACK));
+        canvas.drawPaint(paint);
+        assertColor(Color.BLUE, bitmap.getPixel(0, 0));
+
+        paint.setColor(Color.MAGENTA);
+        paint.setColorFilter(new LightingColorFilter(Color.BLUE, Color.GREEN));
+        canvas.drawPaint(paint);
+        assertColor(Color.CYAN, bitmap.getPixel(0, 0));
+
+        // alpha is ignored
+        bitmap.eraseColor(Color.TRANSPARENT);
+        paint.setColor(Color.MAGENTA);
+        paint.setColorFilter(new LightingColorFilter(Color.TRANSPARENT, Color.argb(0, 0, 0xFF, 0)));
+        canvas.drawPaint(paint);
+        assertColor(Color.GREEN, bitmap.getPixel(0, 0));
+
+        // channels get clipped (no overflow into green or alpha)
+        paint.setColor(Color.MAGENTA);
+        paint.setColorFilter(new LightingColorFilter(Color.WHITE, Color.MAGENTA));
+        canvas.drawPaint(paint);
+        assertColor(Color.MAGENTA, bitmap.getPixel(0, 0));
+
+        // multiply before add
+        paint.setColor(Color.argb(255, 60, 20, 40));
+        paint.setColorFilter(
+                new LightingColorFilter(Color.rgb(0x80, 0xFF, 0x80), Color.rgb(0, 10, 10)));
+        canvas.drawPaint(paint);
+        assertColor(Color.argb(255, 30, 30, 30), bitmap.getPixel(0, 0));
+
+        // source alpha remains unchanged
+        bitmap.eraseColor(Color.TRANSPARENT);
+        paint.setColor(Color.argb(0x80, 60, 20, 40));
+        paint.setColorFilter(
+                new LightingColorFilter(Color.rgb(0x80, 0xFF, 0x80), Color.rgb(0, 10, 10)));
+        canvas.drawPaint(paint);
+        assertColor(Color.argb(0x80, 30, 30, 30), bitmap.getPixel(0, 0));
+    }
+
+    private void assertColor(int expected, int actual) {
+        assertEquals(Color.alpha(expected), Color.alpha(actual), TOLERANCE);
+        assertEquals(Color.red(expected), Color.red(actual), TOLERANCE);
+        assertEquals(Color.green(expected), Color.green(actual), TOLERANCE);
+        assertEquals(Color.blue(expected), Color.blue(actual), TOLERANCE);
+    }
+}