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      1 /*
      2  * Copyright (C) 2014 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.cts;
     18 
     19 import static org.junit.Assert.assertTrue;
     20 
     21 import android.content.Context;
     22 import android.content.res.Resources;
     23 import android.graphics.Bitmap;
     24 import android.support.test.InstrumentationRegistry;
     25 import android.support.test.annotation.UiThreadTest;
     26 import android.support.test.filters.SmallTest;
     27 import android.support.test.runner.AndroidJUnit4;
     28 import android.text.TextUtils;
     29 import android.widget.TextView;
     30 
     31 import org.junit.Test;
     32 import org.junit.runner.RunWith;
     33 
     34 import java.util.Locale;
     35 
     36 @SmallTest
     37 @RunWith(AndroidJUnit4.class)
     38 public class MyanmarTest {
     39     /**
     40      * Tests Unicode composition semantics.
     41      */
     42     @UiThreadTest
     43     @Test
     44     public void testCompositionSemantics() {
     45         boolean isMyanmarSupported = false;
     46         final String[] localeNames = Resources.getSystem().getStringArray(
     47                 Resources.getSystem().getIdentifier("supported_locales", "array", "android"));
     48         for (String localeName : localeNames) {
     49             if (TextUtils.equals("my", Locale.forLanguageTag(localeName).getLanguage())) {
     50                 isMyanmarSupported = true;
     51                 break;
     52             }
     53         }
     54         if (!isMyanmarSupported) {
     55             // Ignoring since no Myanmar font guarantee if Myanmar is not listed in supported
     56             // locales.
     57             return;
     58         }
     59 
     60         Context context = InstrumentationRegistry.getTargetContext();
     61         String textA = "\u1019\u102d\u102f";
     62         String textB = "\u1019\u102f\u102d"; // wrong order for Unicode
     63 
     64         CaptureTextView cviewA = new CaptureTextView(context);
     65         Bitmap bitmapA = cviewA.capture(textA);
     66         CaptureTextView cviewB = new CaptureTextView(context);
     67         Bitmap bitmapB = cviewB.capture(textB);
     68         if (bitmapA.sameAs(bitmapB)) {
     69             // if textA and textB render identically, test against replacement characters
     70             String textC = "\ufffd\ufffd\ufffd"; // replacement characters are acceptable
     71             CaptureTextView cviewC = new CaptureTextView(context);
     72             Bitmap bitmapC = cviewC.capture(textC);
     73             if (!bitmapA.sameAs(bitmapC)) {
     74                 // ...or against blank/empty glyphs
     75                 Bitmap bitmapD = Bitmap.createBitmap(bitmapC.getWidth(), bitmapC.getHeight(),
     76                         bitmapC.getConfig());
     77                 assertTrue(bitmapA.sameAs(bitmapD));
     78             }
     79         }
     80     }
     81 
     82     private static class CaptureTextView extends TextView {
     83 
     84         CaptureTextView(Context context) {
     85             super(context);
     86         }
     87 
     88         Bitmap capture(String text) {
     89             setText(text);
     90 
     91             invalidate();
     92 
     93             setDrawingCacheEnabled(true);
     94             measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
     95                     MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
     96             layout(0, 0, 200,200);
     97 
     98             Bitmap bitmap = Bitmap.createBitmap(getDrawingCache());
     99             setDrawingCacheEnabled(false);
    100             return bitmap;
    101         }
    102 
    103     }
    104 }
    105