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.view.animation.cts;
18
19import android.graphics.Matrix;
20import android.test.AndroidTestCase;
21import android.view.animation.Transformation;
22
23public class TransformationTest extends AndroidTestCase {
24
25    public void testConstructor() {
26        new Transformation();
27    }
28
29    public void testCompose() {
30        final Transformation t1 = new Transformation();
31        final Transformation t2 = new Transformation();
32        t1.setAlpha(0.5f);
33        t2.setAlpha(0.4f);
34        t1.getMatrix().setScale(3, 1);
35        t2.getMatrix().setScale(3, 1);
36        t1.setTransformationType(Transformation.TYPE_MATRIX);
37        t2.setTransformationType(Transformation.TYPE_ALPHA);
38        t2.compose(t1);
39
40        Matrix expectedMatrix = new Matrix();
41        expectedMatrix.setScale(9, 1);
42        assertEquals(expectedMatrix, t2.getMatrix());
43        assertEquals(0.4f * 0.5f, t2.getAlpha());
44        assertEquals(Transformation.TYPE_ALPHA, t2.getTransformationType());
45
46        t1.setTransformationType(Transformation.TYPE_IDENTITY);
47        t2.compose(t1);
48        expectedMatrix = new Matrix();
49        expectedMatrix.setScale(27, 1);
50        assertEquals(expectedMatrix, t2.getMatrix());
51        assertEquals(0.4f * 0.5f * 0.5f, t2.getAlpha());
52        assertEquals(Transformation.TYPE_ALPHA, t2.getTransformationType());
53    }
54
55    public void testClear() {
56        final Transformation t1 = new Transformation();
57        final Transformation t2 = new Transformation();
58        t2.set(t1);
59        assertTransformationEquals(t1, t2);
60
61        // Change the t2
62        t2.setAlpha(0.0f);
63        t2.getMatrix().setScale(2, 3);
64        t2.setTransformationType(Transformation.TYPE_ALPHA);
65        assertTransformationNotSame(t1, t2);
66
67        // Clear the change
68        t2.clear();
69        assertTransformationEquals(t1, t2);
70    }
71
72    private void assertTransformationNotSame(Transformation expected, Transformation actual) {
73        assertNotSame(expected.getAlpha(), actual.getAlpha());
74        assertFalse(expected.getMatrix().equals(actual.getMatrix()));
75        assertNotSame(expected.getTransformationType(), actual.getTransformationType());
76    }
77
78    private void assertTransformationEquals(Transformation expected, Transformation actual) {
79        assertEquals(expected.getAlpha(), actual.getAlpha());
80        assertEquals(expected.getMatrix(), actual.getMatrix());
81        assertEquals(expected.getTransformationType(), actual.getTransformationType());
82    }
83
84    public void testAccessTransformationType() {
85        final Transformation transformation = new Transformation();
86
87        // From Javadoc of {@link Transformation#clear()}, we see the default type is TYPE_BOTH.
88        assertEquals(Transformation.TYPE_BOTH, transformation.getTransformationType());
89
90        transformation.setTransformationType(Transformation.TYPE_IDENTITY);
91        assertEquals(Transformation.TYPE_IDENTITY, transformation.getTransformationType());
92
93        transformation.setTransformationType(Transformation.TYPE_ALPHA);
94        assertEquals(Transformation.TYPE_ALPHA, transformation.getTransformationType());
95
96        transformation.setTransformationType(Transformation.TYPE_MATRIX);
97        assertEquals(Transformation.TYPE_MATRIX, transformation.getTransformationType());
98
99        transformation.setTransformationType(Transformation.TYPE_BOTH);
100        assertEquals(Transformation.TYPE_BOTH, transformation.getTransformationType());
101    }
102
103    public void testSet() {
104        final Transformation t1 = new Transformation();
105        t1.setAlpha(0.0f);
106        final Transformation t2 = new Transformation();
107        t2.set(t1);
108        assertTransformationEquals(t1, t2);
109    }
110
111    public void testAccessAlpha() {
112        final Transformation transformation = new Transformation();
113
114        transformation.setAlpha(0.0f);
115        assertEquals(0.0f, transformation.getAlpha());
116
117        transformation.setAlpha(0.5f);
118        assertEquals(0.5f, transformation.getAlpha());
119
120        transformation.setAlpha(1.0f);
121        assertEquals(1.0f, transformation.getAlpha());
122    }
123
124    public void testToString() {
125        assertNotNull(new Transformation().toString());
126        assertNotNull(new Transformation().toShortString());
127    }
128
129    public void testGetMatrix() {
130        final Matrix expected = new Matrix();
131        final Transformation transformation = new Transformation();
132        assertEquals(expected, transformation.getMatrix());
133    }
134}
135