1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
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 
17 package com.android.ide.eclipse.adt.internal.editors.layout.gle2;
18 
19 import org.eclipse.swt.SWT;
20 import org.eclipse.swt.events.MouseEvent;
21 import org.eclipse.swt.widgets.Event;
22 import org.eclipse.swt.widgets.List;
23 import org.eclipse.swt.widgets.ScrollBar;
24 import org.eclipse.swt.widgets.Shell;
25 
26 import junit.framework.TestCase;
27 
28 /**
29  * Common utilities for the point tests {@link LayoutPointTest} and
30  * {@link ControlPointTest}
31  */
32 public class PointTestCases extends TestCase {
33     LayoutCanvas mCanvas = new TestLayoutCanvas();
34 
canvasMouseEvent(int x, int y, int stateMask)35     protected MouseEvent canvasMouseEvent(int x, int y, int stateMask) {
36         Event event = new Event();
37         event.x = x;
38         event.y = y;
39         event.stateMask = stateMask;
40         event.widget = mCanvas;
41         MouseEvent mouseEvent = new MouseEvent(event);
42         return mouseEvent;
43     }
44 
45     /** Mock implementation of LayoutCanvas */
46     protected static class TestLayoutCanvas extends LayoutCanvas {
47         float mScaleX;
48 
49         float mScaleY;
50 
51         float mTranslateX;
52 
53         float mTranslateY;
54 
TestLayoutCanvas(float scaleX, float scaleY, float translateX, float translateY)55         public TestLayoutCanvas(float scaleX, float scaleY, float translateX, float translateY) {
56             super(null, null, new Shell(), 0);
57 
58             this.mScaleX = scaleX;
59             this.mScaleY = scaleY;
60             this.mTranslateX = translateX;
61             this.mTranslateY = translateY;
62         }
63 
TestLayoutCanvas()64         public TestLayoutCanvas() {
65             this(2.0f, 2.0f, 20.0f, 20.0f);
66         }
67 
68         @Override
getHorizontalTransform()69         CanvasTransform getHorizontalTransform() {
70             ScrollBar scrollBar = new List(this, SWT.V_SCROLL|SWT.H_SCROLL).getHorizontalBar();
71             return new TestCanvasTransform(scrollBar, mScaleX, mTranslateX);
72         }
73 
74         @Override
getVerticalTransform()75         CanvasTransform getVerticalTransform() {
76             ScrollBar scrollBar = new List(this, SWT.V_SCROLL|SWT.H_SCROLL).getVerticalBar();
77             return new TestCanvasTransform(scrollBar, mScaleY, mTranslateY);
78         }
79     }
80 
81     static class TestCanvasTransform extends CanvasTransform {
82         float mScale;
83 
84         float mTranslate;
85 
TestCanvasTransform(ScrollBar scrollBar, float scale, float translate)86         public TestCanvasTransform(ScrollBar scrollBar, float scale, float translate) {
87             super(null, scrollBar);
88             this.mScale = scale;
89             this.mTranslate = translate;
90         }
91 
92         @Override
translate(int value)93         public int translate(int value) {
94             return (int) ((value - mTranslate) / mScale);
95         }
96 
97         @Override
inverseTranslate(int value)98         public int inverseTranslate(int value) {
99             return (int) (value * mScale + mTranslate);
100         }
101     }
102 
testDummy()103     public void testDummy() {
104         // To avoid JUnit warning that this class contains no tests, even though
105         // this is an abstract class and JUnit shouldn't try
106     }
107 }
108