original

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

diff --git a/cts/tests/tests/graphics/src/android/graphics/cts/CornerPathEffectTest.java b/cts/tests/tests/graphics/src/android/graphics/cts/CornerPathEffectTest.java
new file mode 100644 (file)
index 0000000..eceb290
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+++ b/cts/tests/tests/graphics/src/android/graphics/cts/CornerPathEffectTest.java
@@ -0,0 +1,111 @@
+/*
+ * 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 dalvik.annotation.ToBeFixed;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.CornerPathEffect;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.PathEffect;
+import android.graphics.PorterDuffXfermode;
+import android.graphics.RectF;
+import android.graphics.Bitmap.Config;
+import android.graphics.Paint.Style;
+import android.graphics.PorterDuff.Mode;
+
+import junit.framework.TestCase;
+
+@TestTargetClass(CornerPathEffect.class)
+public class CornerPathEffectTest extends TestCase {
+    private static final int BITMAP_WIDTH = 100;
+    private static final int BITMAP_HEIGHT = 100;
+    private static final int PADDING = 10;
+    private static final int RADIUS = 20;
+    private static final int TOLERANCE = 5;
+
+    @TestTargetNew(
+        level = TestLevel.COMPLETE,
+        method = "CornerPathEffect",
+        args = {float.class}
+    )
+    @ToBeFixed(bug = "2037365", explanation = "CornerPathEffect ends the path prematurely it " +
+            "is not closed.")
+    public void testCornerPathEffect() {
+        Path path = new Path();
+        path.moveTo(0, PADDING);
+        path.lineTo(BITMAP_WIDTH - PADDING, PADDING);
+        path.lineTo(BITMAP_WIDTH - PADDING, BITMAP_HEIGHT);
+
+        PathEffect effect = new CornerPathEffect(RADIUS);
+
+        Paint pathPaint = new Paint();
+        pathPaint.setColor(Color.GREEN);
+        pathPaint.setStyle(Style.STROKE);
+        pathPaint.setStrokeWidth(0);
+        pathPaint.setPathEffect(effect);
+
+        Bitmap bitmap = Bitmap.createBitmap(BITMAP_WIDTH, BITMAP_HEIGHT, Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+
+        // draw the path using the corner path effect
+        canvas.drawPath(path, pathPaint);
+
+        // create a path that describes the expected shape after the corner is rounded
+        Path expectedPath = new Path();
+        RectF oval = new RectF(BITMAP_WIDTH - PADDING - 2 * RADIUS, PADDING,
+                BITMAP_WIDTH - PADDING, PADDING + 2 * RADIUS);
+        expectedPath.moveTo(0, PADDING);
+        expectedPath.arcTo(oval, 270, 90);
+        expectedPath.lineTo(BITMAP_WIDTH - PADDING, BITMAP_HEIGHT);
+
+        // A paint that draws the expected path with a tolerance width into the red channel
+        Paint expectedPaint = new Paint();
+        expectedPaint.setColor(Color.RED);
+        expectedPaint.setStyle(Style.STROKE);
+        expectedPaint.setStrokeWidth(TOLERANCE);
+        expectedPaint.setXfermode(new PorterDuffXfermode(Mode.SCREEN));
+
+        canvas.drawPath(expectedPath, expectedPaint);
+
+        int numPixels = 0;
+        for (int y = 0; y < BITMAP_HEIGHT; y++) {
+            for (int x = 0; x < BITMAP_WIDTH; x++) {
+                int pixel = bitmap.getPixel(x, y);
+                if (Color.green(pixel) > 0) {
+                    numPixels += 1;
+                    // green path must overlap with red guide line
+                    assertEquals(Color.YELLOW, pixel);
+                }
+            }
+        }
+        // number of pixels that should be on a straight line
+        int straightLines = BITMAP_WIDTH - PADDING - RADIUS + BITMAP_HEIGHT - PADDING - RADIUS;
+        // number of pixels forming the corner
+        int cornerPixels = numPixels - straightLines;
+        // rounded corner must have less pixels than a sharp corner
+        assertTrue(cornerPixels < 2 * RADIUS);
+        // ... but not as few as a diagonal
+        // ToBeFixed: The following should be assertTrue (see bug 2037365)
+        assertFalse(cornerPixels > RADIUS);
+    }
+}