1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.graphics;
18
19
20import android.graphics.Bitmap.Config;
21import android.graphics.Path.Direction;
22import android.support.test.filters.SmallTest;
23import android.support.test.runner.AndroidJUnit4;
24
25import static org.junit.Assert.assertTrue;
26
27import org.junit.Test;
28import org.junit.runner.RunWith;
29
30@RunWith(AndroidJUnit4.class)
31public class PathOffsetTest {
32
33    private static final int SQUARE = 10;
34    private static final int WIDTH = 100;
35    private static final int HEIGHT = 100;
36    private static final int START_X = 10;
37    private static final int START_Y = 20;
38    private static final int OFFSET_X = 30;
39    private static final int OFFSET_Y = 40;
40
41    @Test
42    @SmallTest
43    public void testPathOffset() {
44        Path actualPath = new Path();
45        actualPath.addRect(START_X, START_Y, START_X + SQUARE, START_Y + SQUARE, Direction.CW);
46        assertTrue(actualPath.isSimplePath);
47        actualPath.offset(OFFSET_X, OFFSET_Y);
48        assertTrue(actualPath.isSimplePath);
49
50        Path expectedPath = new Path();
51        expectedPath.addRect(START_X + OFFSET_X, START_Y + OFFSET_Y, START_X + OFFSET_X + SQUARE,
52                START_Y + OFFSET_Y + SQUARE, Direction.CW);
53
54        assertPaths(actualPath, expectedPath);
55    }
56
57    @Test
58    @SmallTest
59    public void testPathOffsetWithDestination() {
60        Path initialPath = new Path();
61        initialPath.addRect(START_X, START_Y, START_X + SQUARE, START_Y + SQUARE, Direction.CW);
62        Path actualPath = new Path();
63        assertTrue(initialPath.isSimplePath);
64        assertTrue(actualPath.isSimplePath);
65        initialPath.offset(OFFSET_X, OFFSET_Y, actualPath);
66        assertTrue(actualPath.isSimplePath);
67
68        Path expectedPath = new Path();
69        expectedPath.addRect(START_X + OFFSET_X, START_Y + OFFSET_Y, START_X + OFFSET_X + SQUARE,
70                START_Y + OFFSET_Y + SQUARE, Direction.CW);
71
72        assertPaths(actualPath, expectedPath);
73    }
74
75    private static void assertPaths(Path actual, Path expected) {
76        Bitmap actualBitmap = drawAndGetBitmap(actual);
77        Bitmap expectedBitmap = drawAndGetBitmap(expected);
78        assertTrue(actualBitmap.sameAs(expectedBitmap));
79    }
80
81    private static Bitmap drawAndGetBitmap(Path path) {
82        Bitmap bitmap = Bitmap.createBitmap(WIDTH, HEIGHT, Config.ARGB_8888);
83        bitmap.eraseColor(Color.BLACK);
84        Paint paint = new Paint();
85        paint.setColor(Color.RED);
86        Canvas canvas = new Canvas(bitmap);
87        canvas.drawPath(path, paint);
88        return bitmap;
89    }
90
91}
92