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      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 
     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 
     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 
     64         public TestLayoutCanvas() {
     65             this(2.0f, 2.0f, 20.0f, 20.0f);
     66         }
     67 
     68         @Override
     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
     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 
     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
     93         public int translate(int value) {
     94             return (int) ((value - mTranslate) / mScale);
     95         }
     96 
     97         @Override
     98         public int inverseTranslate(int value) {
     99             return (int) (value * mScale + mTranslate);
    100         }
    101     }
    102 
    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