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 17 package android.text.method.cts; 18 19 20 import android.app.Activity; 21 import android.os.SystemClock; 22 import android.test.ActivityInstrumentationTestCase2; 23 import android.text.Layout; 24 import android.text.Spannable; 25 import android.text.SpannableString; 26 import android.text.TextPaint; 27 import android.text.method.Touch; 28 import android.util.DisplayMetrics; 29 import android.view.MotionEvent; 30 import android.widget.TextView; 31 32 public class TouchTest extends ActivityInstrumentationTestCase2<CtsActivity> { 33 private Activity mActivity; 34 private static final String LONG_TEXT = "Scrolls the specified widget to the specified " + 35 "coordinates, except constrains the X scrolling position to the horizontal regions " + 36 "of the text that will be visible after scrolling to the specified Y position." + 37 "This is the description of the test." + 38 "Scrolls the specified widget to the specified " + 39 "coordinates, except constrains the X scrolling position to the horizontal regions " + 40 "of the text that will be visible after scrolling to the specified Y position." + 41 "This is the description of the test."; 42 43 private boolean mReturnFromTouchEvent; 44 45 public TouchTest() { 46 super("com.android.cts.text", CtsActivity.class); 47 } 48 49 @Override 50 protected void setUp() throws Exception { 51 super.setUp(); 52 mActivity = getActivity(); 53 } 54 55 public void testScrollTo() throws Throwable { 56 final TextView tv = new TextView(mActivity); 57 runTestOnUiThread(new Runnable() { 58 public void run() { 59 mActivity.setContentView(tv); 60 tv.setSingleLine(true); 61 tv.setLines(2); 62 } 63 }); 64 getInstrumentation().waitForIdleSync(); 65 TextPaint paint = tv.getPaint(); 66 final Layout layout = tv.getLayout(); 67 68 runTestOnUiThread(new Runnable() { 69 public void run() { 70 tv.setText(LONG_TEXT); 71 } 72 }); 73 getInstrumentation().waitForIdleSync(); 74 75 // get the total length of string 76 final int width = getTextWidth(LONG_TEXT, paint); 77 78 runTestOnUiThread(new Runnable() { 79 public void run() { 80 Touch.scrollTo(tv, layout, width - tv.getWidth() - 1, 0); 81 } 82 }); 83 getInstrumentation().waitForIdleSync(); 84 assertEquals(width - tv.getWidth() - 1, tv.getScrollX()); 85 assertEquals(0, tv.getScrollY()); 86 87 // the X to which scroll is greater than the total length of string. 88 runTestOnUiThread(new Runnable() { 89 public void run() { 90 Touch.scrollTo(tv, layout, width + 100, 5); 91 } 92 }); 93 getInstrumentation().waitForIdleSync(); 94 assertEquals(width - tv.getWidth(), tv.getScrollX(), 1.0f); 95 assertEquals(5, tv.getScrollY()); 96 97 runTestOnUiThread(new Runnable() { 98 public void run() { 99 Touch.scrollTo(tv, layout, width - 10, 5); 100 } 101 }); 102 getInstrumentation().waitForIdleSync(); 103 assertEquals(width - tv.getWidth(), tv.getScrollX(), 1.0f); 104 assertEquals(5, tv.getScrollY()); 105 } 106 107 public void testOnTouchEvent() throws Throwable { 108 final TextView tv = new TextView(mActivity); 109 110 // Create a string that is wider than the screen. 111 DisplayMetrics metrics = mActivity.getResources().getDisplayMetrics(); 112 int screenWidth = metrics.widthPixels; 113 TextPaint paint = tv.getPaint(); 114 String text = LONG_TEXT; 115 int textWidth = Math.round(paint.measureText(text)); 116 while (textWidth < screenWidth) { 117 text += LONG_TEXT; 118 textWidth = Math.round(paint.measureText(text)); 119 } 120 121 // Drag the difference between the text width and the screen width. 122 int dragAmount = Math.min(screenWidth, textWidth - screenWidth); 123 assertTrue(dragAmount > 0); 124 final String finalText = text; 125 final SpannableString spannable = new SpannableString(finalText); 126 runTestOnUiThread(new Runnable() { 127 public void run() { 128 mActivity.setContentView(tv); 129 tv.setSingleLine(true); 130 tv.setText(finalText); 131 } 132 }); 133 getInstrumentation().waitForIdleSync(); 134 135 long downTime = SystemClock.uptimeMillis(); 136 long eventTime = SystemClock.uptimeMillis(); 137 final MotionEvent event1 = MotionEvent.obtain(downTime, eventTime, 138 MotionEvent.ACTION_DOWN, dragAmount, 0, 0); 139 final MotionEvent event2 = MotionEvent.obtain(downTime, eventTime, 140 MotionEvent.ACTION_MOVE, 0, 0, 0); 141 final MotionEvent event3 = MotionEvent.obtain(downTime, eventTime, 142 MotionEvent.ACTION_UP, 0, 0, 0); 143 assertEquals(0, tv.getScrollX()); 144 assertEquals(0, tv.getScrollY()); 145 mReturnFromTouchEvent = false; 146 runTestOnUiThread(new Runnable() { 147 public void run() { 148 mReturnFromTouchEvent = Touch.onTouchEvent(tv, spannable, event1); 149 } 150 }); 151 getInstrumentation().waitForIdleSync(); 152 assertTrue(mReturnFromTouchEvent); 153 // TextView has not been scrolled. 154 assertEquals(0, tv.getScrollX()); 155 assertEquals(0, tv.getScrollY()); 156 assertEquals(0, Touch.getInitialScrollX(tv, spannable)); 157 assertEquals(0, Touch.getInitialScrollY(tv, spannable)); 158 159 mReturnFromTouchEvent = false; 160 runTestOnUiThread(new Runnable() { 161 public void run() { 162 mReturnFromTouchEvent = Touch.onTouchEvent(tv, spannable, event2); 163 } 164 }); 165 getInstrumentation().waitForIdleSync(); 166 assertTrue(mReturnFromTouchEvent); 167 // TextView has been scrolled. 168 assertEquals(dragAmount, tv.getScrollX()); 169 assertEquals(0, tv.getScrollY()); 170 assertEquals(0, Touch.getInitialScrollX(tv, spannable)); 171 assertEquals(0, Touch.getInitialScrollY(tv, spannable)); 172 173 mReturnFromTouchEvent = false; 174 runTestOnUiThread(new Runnable() { 175 public void run() { 176 mReturnFromTouchEvent = Touch.onTouchEvent(tv, spannable, event3); 177 } 178 }); 179 getInstrumentation().waitForIdleSync(); 180 assertTrue(mReturnFromTouchEvent); 181 // TextView has not been scrolled. 182 assertEquals(dragAmount, tv.getScrollX()); 183 assertEquals(0, tv.getScrollY()); 184 assertEquals(-1, Touch.getInitialScrollX(tv, spannable)); 185 assertEquals(-1, Touch.getInitialScrollY(tv, spannable)); 186 } 187 188 private int getTextWidth(String str, TextPaint paint) { 189 float totalWidth = 0f; 190 float[] widths = new float[str.length()]; 191 paint.getTextWidths(str, widths); 192 for (float f : widths) { 193 totalWidth += f; 194 } 195 return (int) totalWidth; 196 } 197 } 198
