1 /* 2 * Copyright (C) 2012 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 com.android.recovery_l10n; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.res.AssetManager; 23 import android.content.res.Configuration; 24 import android.content.res.Resources; 25 import android.graphics.Bitmap; 26 import android.os.Bundle; 27 import android.os.RemoteException; 28 import android.util.DisplayMetrics; 29 import android.util.Log; 30 import android.view.View; 31 import android.widget.Button; 32 import android.widget.TextView; 33 import android.widget.Spinner; 34 import android.widget.ArrayAdapter; 35 import android.widget.AdapterView; 36 37 import java.io.FileOutputStream; 38 import java.io.IOException; 39 import java.util.ArrayList; 40 import java.util.Arrays; 41 import java.util.HashMap; 42 import java.util.Locale; 43 44 /** 45 * This activity assists in generating the specially-formatted bitmaps 46 * of text needed for recovery's localized text display. Each image 47 * contains all the translations of a single string; above each 48 * translation is a "header row" that encodes that subimage's width, 49 * height, and locale using pixel values. 50 * 51 * To use this app to generate new translations: 52 * 53 * - Update the string resources in res/values-* 54 * 55 * - Build and run the app. Select the string you want to 56 * translate, and press the "Go" button. 57 * 58 * - Wait for it to finish cycling through all the strings, then 59 * pull /data/data/com.android.recovery_l10n/files/text-out.png 60 * from the device. 61 * 62 * - "pngcrush -c 0 text-out.png output.png" 63 * 64 * - Put output.png in bootable/recovery/res/images/ (renamed 65 * appropriately). 66 * 67 * Recovery expects 8-bit 1-channel images (white text on black 68 * background). pngcrush -c 0 will convert the output of this program 69 * to such an image. If you use any other image handling tools, 70 * remember that they must be lossless to preserve the exact values of 71 * pixels in the header rows; don't convert them to jpeg or anything. 72 */ 73 74 public class Main extends Activity { 75 private static final String TAG = "RecoveryL10N"; 76 77 HashMap<Locale, Bitmap> savedBitmaps; 78 TextView mText; 79 int mStringId = R.string.recovery_installing; 80 81 public class TextCapture implements Runnable { 82 private Locale nextLocale; 83 private Locale thisLocale; 84 private Runnable next; 85 TextCapture(Locale thisLocale, Locale nextLocale, Runnable next)86 TextCapture(Locale thisLocale, Locale nextLocale, Runnable next) { 87 this.nextLocale = nextLocale; 88 this.thisLocale = thisLocale; 89 this.next = next; 90 } 91 run()92 public void run() { 93 Bitmap b = mText.getDrawingCache(); 94 savedBitmaps.put(thisLocale, b.copy(Bitmap.Config.ARGB_8888, false)); 95 96 if (nextLocale != null) { 97 switchTo(nextLocale); 98 } 99 100 if (next != null) { 101 mText.postDelayed(next, 200); 102 } 103 } 104 } 105 switchTo(Locale locale)106 private void switchTo(Locale locale) { 107 Resources standardResources = getResources(); 108 AssetManager assets = standardResources.getAssets(); 109 DisplayMetrics metrics = standardResources.getDisplayMetrics(); 110 Configuration config = new Configuration(standardResources.getConfiguration()); 111 config.locale = locale; 112 Resources defaultResources = new Resources(assets, metrics, config); 113 114 mText.setText(mStringId); 115 116 mText.setDrawingCacheEnabled(false); 117 mText.setDrawingCacheEnabled(true); 118 mText.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH); 119 } 120 121 @Override onCreate(Bundle savedInstance)122 public void onCreate(Bundle savedInstance) { 123 super.onCreate(savedInstance); 124 setContentView(R.layout.main); 125 126 savedBitmaps = new HashMap<Locale, Bitmap>(); 127 128 Spinner spinner = (Spinner) findViewById(R.id.which); 129 ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource( 130 this, R.array.string_options, android.R.layout.simple_spinner_item); 131 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 132 spinner.setAdapter(adapter); 133 spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 134 @Override 135 public void onItemSelected(AdapterView parent, View view, 136 int pos, long id) { 137 switch (pos) { 138 case 0: mStringId = R.string.recovery_installing; break; 139 case 1: mStringId = R.string.recovery_erasing; break; 140 case 2: mStringId = R.string.recovery_no_command; break; 141 case 3: mStringId = R.string.recovery_error; break; 142 } 143 } 144 @Override public void onNothingSelected(AdapterView parent) { } 145 }); 146 147 mText = (TextView) findViewById(R.id.text); 148 149 String[] localeNames = getAssets().getLocales(); 150 Arrays.sort(localeNames); 151 ArrayList<Locale> locales = new ArrayList<Locale>(); 152 for (String localeName : localeNames) { 153 Log.i(TAG, "locale = " + localeName); 154 locales.add(Locale.forLanguageTag(localeName)); 155 } 156 157 final Runnable seq = buildSequence(locales.toArray(new Locale[0])); 158 159 Button b = (Button) findViewById(R.id.go); 160 b.setOnClickListener(new View.OnClickListener() { 161 @Override 162 public void onClick(View ignore) { 163 mText.post(seq); 164 } 165 }); 166 } 167 buildSequence(final Locale[] locales)168 private Runnable buildSequence(final Locale[] locales) { 169 Runnable head = new Runnable() { public void run() { mergeBitmaps(locales); } }; 170 Locale prev = null; 171 for (Locale loc : locales) { 172 head = new TextCapture(loc, prev, head); 173 prev = loc; 174 } 175 final Runnable fhead = head; 176 final Locale floc = prev; 177 return new Runnable() { public void run() { startSequence(fhead, floc); } }; 178 } 179 180 private void startSequence(Runnable firstRun, Locale firstLocale) { 181 savedBitmaps.clear(); 182 switchTo(firstLocale); 183 mText.postDelayed(firstRun, 200); 184 } 185 186 private void saveBitmap(Bitmap b, String filename) { 187 try { 188 FileOutputStream fos = openFileOutput(filename, 0); 189 b.compress(Bitmap.CompressFormat.PNG, 100, fos); 190 fos.close(); 191 } catch (IOException e) { 192 Log.i(TAG, "failed to write PNG", e); 193 } 194 } 195 196 private int colorFor(byte b) { 197 return 0xff000000 | (b<<16) | (b<<8) | b; 198 } 199 200 private int colorFor(int b) { 201 return 0xff000000 | (b<<16) | (b<<8) | b; 202 } 203 204 private void mergeBitmaps(final Locale[] locales) { 205 HashMap<String, Integer> countByLanguage = new HashMap<String, Integer>(); 206 207 int height = 2; 208 int width = 10; 209 int maxHeight = 0; 210 for (Locale loc : locales) { 211 Bitmap b = savedBitmaps.get(loc); 212 int h = b.getHeight(); 213 int w = b.getWidth(); 214 height += h+1; 215 if (h > maxHeight) maxHeight = h; 216 if (w > width) width = w; 217 218 String lang = loc.getLanguage(); 219 if (countByLanguage.containsKey(lang)) { 220 countByLanguage.put(lang, countByLanguage.get(lang)+1); 221 } else { 222 countByLanguage.put(lang, 1); 223 } 224 } 225 226 Log.i(TAG, "output bitmap is " + width + " x " + height); 227 Bitmap out = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); 228 out.eraseColor(0xff000000); 229 int[] pixels = new int[maxHeight * width]; 230 231 int p = 0; 232 for (Locale loc : locales) { 233 Bitmap bm = savedBitmaps.get(loc); 234 int h = bm.getHeight(); 235 int w = bm.getWidth(); 236 237 bm.getPixels(pixels, 0, w, 0, 0, w, h); 238 239 // Find the rightmost and leftmost columns with any 240 // nonblack pixels; we'll copy just that region to the 241 // output image. 242 243 int right = w; 244 while (right > 1) { 245 boolean all_black = true; 246 for (int j = 0; j < h; ++j) { 247 if (pixels[j*w+right-1] != 0xff000000) { 248 all_black = false; 249 break; 250 } 251 } 252 if (all_black) { 253 --right; 254 } else { 255 break; 256 } 257 } 258 259 int left = 0; 260 while (left < right-1) { 261 boolean all_black = true; 262 for (int j = 0; j < h; ++j) { 263 if (pixels[j*w+left] != 0xff000000) { 264 all_black = false; 265 break; 266 } 267 } 268 if (all_black) { 269 ++left; 270 } else { 271 break; 272 } 273 } 274 275 // Make the last country variant for a given language be 276 // the catch-all for that language (because recovery will 277 // take the first one that matches). 278 String lang = loc.getLanguage(); 279 if (countByLanguage.get(lang) > 1) { 280 countByLanguage.put(lang, countByLanguage.get(lang)-1); 281 lang = loc.toString(); 282 } 283 int tw = right - left; 284 Log.i(TAG, "encoding \"" + loc + "\" as \"" + lang + "\": " + tw + " x " + h); 285 byte[] langBytes = lang.getBytes(); 286 out.setPixel(0, p, colorFor(tw & 0xff)); 287 out.setPixel(1, p, colorFor(tw >>> 8)); 288 out.setPixel(2, p, colorFor(h & 0xff)); 289 out.setPixel(3, p, colorFor(h >>> 8)); 290 out.setPixel(4, p, colorFor(langBytes.length)); 291 int x = 5; 292 for (byte b : langBytes) { 293 out.setPixel(x, p, colorFor(b)); 294 x++; 295 } 296 out.setPixel(x, p, colorFor(0)); 297 298 p++; 299 300 out.setPixels(pixels, left, w, 0, p, tw, h); 301 p += h; 302 } 303 304 // if no languages match, suppress text display by using a 305 // single black pixel as the image. 306 out.setPixel(0, p, colorFor(1)); 307 out.setPixel(1, p, colorFor(0)); 308 out.setPixel(2, p, colorFor(1)); 309 out.setPixel(3, p, colorFor(0)); 310 out.setPixel(4, p, colorFor(0)); 311 p++; 312 313 saveBitmap(out, "text-out.png"); 314 Log.i(TAG, "wrote text-out.png"); 315 } 316 } 317
