/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.recovery_l10n;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetManager;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.RemoteException;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Spinner;
import android.widget.ArrayAdapter;
import android.widget.AdapterView;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Locale;
/**
* This activity assists in generating the specially-formatted bitmaps
* of text needed for recovery's localized text display. Each image
* contains all the translations of a single string; above each
* translation is a "header row" that encodes that subimage's width,
* height, and locale using pixel values.
*
* To use this app to generate new translations:
*
* - Update the string resources in res/values-*
*
* - Build and run the app. Select the string you want to
* translate, and press the "Go" button.
*
* - Wait for it to finish cycling through all the strings, then
* pull /data/data/com.android.recovery_l10n/files/text-out.png
* from the device.
*
* - "pngcrush -c 0 text-out.png output.png"
*
* - Put output.png in bootable/recovery/res/images/ (renamed
* appropriately).
*
* Recovery expects 8-bit 1-channel images (white text on black
* background). pngcrush -c 0 will convert the output of this program
* to such an image. If you use any other image handling tools,
* remember that they must be lossless to preserve the exact values of
* pixels in the header rows; don't convert them to jpeg or anything.
*/
public class Main extends Activity {
private static final String TAG = "RecoveryL10N";
HashMap<Locale, Bitmap> savedBitmaps;
TextView mText;
int mStringId = R.string.recovery_installing;
public class TextCapture implements Runnable {
private Locale nextLocale;
private Locale thisLocale;
private Runnable next;
TextCapture(Locale thisLocale, Locale nextLocale, Runnable next) {
this.nextLocale = nextLocale;
this.thisLocale = thisLocale;
this.next = next;
}
public void run() {
Bitmap b = mText.getDrawingCache();
savedBitmaps.put(thisLocale, b.copy(Bitmap.Config.ARGB_8888, false));
if (nextLocale != null) {
switchTo(nextLocale);
}
if (next != null) {
mText.postDelayed(next, 200);
}
}
}
private void switchTo(Locale locale) {
Resources standardResources = getResources();
AssetManager assets = standardResources.getAssets();
DisplayMetrics metrics = standardResources.getDisplayMetrics();
Configuration config = new Configuration(standardResources.getConfiguration());
config.locale = locale;
Resources defaultResources = new Resources(assets, metrics, config);
mText.setText(mStringId);
mText.setDrawingCacheEnabled(false);
mText.setDrawingCacheEnabled(true);
mText.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
}
@Override
public void onCreate(Bundle savedInstance) {
super.onCreate(savedInstance);
setContentView(R.layout.main);
savedBitmaps = new HashMap<Locale, Bitmap>();
Spinner spinner = (Spinner) findViewById(R.id.which);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.string_options, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView parent, View view,
int pos, long id) {
switch (pos) {
case 0: mStringId = R.string.recovery_installing; break;
case 1: mStringId = R.string.recovery_erasing; break;
case 2: mStringId = R.string.recovery_no_command; break;
case 3: mStringId = R.string.recovery_error; break;
}
}
@Override public void onNothingSelected(AdapterView parent) { }
});
mText = (TextView) findViewById(R.id.text);
String[] localeNames = getAssets().getLocales();
Arrays.sort(localeNames);
ArrayList<Locale> locales = new ArrayList<Locale>();
for (String ln : localeNames) {
int u = ln.indexOf('_');
if (u >= 0) {
Log.i(TAG, "locale = " + ln);
locales.add(new Locale(ln.substring(0, u), ln.substring(u+1)));
}
}
final Runnable seq = buildSequence(locales.toArray(new Locale[0]));
Button b = (Button) findViewById(R.id.go);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View ignore) {
mText.post(seq);
}
});
}
private Runnable buildSequence(final Locale[] locales) {
Runnable head = new Runnable() { public void run() { mergeBitmaps(locales); } };
Locale prev = null;
for (Locale loc : locales) {
head = new TextCapture(loc, prev, head);
prev = loc;
}
final Runnable fhead = head;
final Locale floc = prev;
return new Runnable() { public void run() { startSequence(fhead, floc); } };
}
private void startSequence(Runnable firstRun, Locale firstLocale) {
savedBitmaps.clear();
switchTo(firstLocale);
mText.postDelayed(firstRun, 200);
}
private void saveBitmap(Bitmap b, String filename) {
try {
FileOutputStream fos = openFileOutput(filename, 0);
b.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
} catch (IOException e) {
Log.i(TAG, "failed to write PNG", e);
}
}
private int colorFor(byte b) {
return 0xff000000 | (b<<16) | (b<<8) | b;
}
private int colorFor(int b) {
return 0xff000000 | (b<<16) | (b<<8) | b;
}
private void mergeBitmaps(final Locale[] locales) {
HashMap<String, Integer> countByLanguage = new HashMap<String, Integer>();
int height = 2;
int width = 10;
int maxHeight = 0;
for (Locale loc : locales) {
Bitmap b = savedBitmaps.get(loc);
int h = b.getHeight();
int w = b.getWidth();
height += h+1;
if (h > maxHeight) maxHeight = h;
if (w > width) width = w;
String lang = loc.getLanguage();
if (countByLanguage.containsKey(lang)) {
countByLanguage.put(lang, countByLanguage.get(lang)+1);
} else {
countByLanguage.put(lang, 1);
}
}
Log.i(TAG, "output bitmap is " + width + " x " + height);
Bitmap out = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
out.eraseColor(0xff000000);
int[] pixels = new int[maxHeight * width];
int p = 0;
for (Locale loc : locales) {
Bitmap bm = savedBitmaps.get(loc);
int h = bm.getHeight();
int w = bm.getWidth();
bm.getPixels(pixels, 0, w, 0, 0, w, h);
// Find the rightmost and leftmost columns with any
// nonblack pixels; we'll copy just that region to the
// output image.
int right = w;
while (right > 1) {
boolean all_black = true;
for (int j = 0; j < h; ++j) {
if (pixels[j*w+right-1] != 0xff000000) {
all_black = false;
break;
}
}
if (all_black) {
--right;
} else {
break;
}
}
int left = 0;
while (left < right-1) {
boolean all_black = true;
for (int j = 0; j < h; ++j) {
if (pixels[j*w+left] != 0xff000000) {
all_black = false;
break;
}
}
if (all_black) {
++left;
} else {
break;
}
}
// Make the last country variant for a given language be
// the catch-all for that language (because recovery will
// take the first one that matches).
String lang = loc.getLanguage();
if (countByLanguage.get(lang) > 1) {
countByLanguage.put(lang, countByLanguage.get(lang)-1);
lang = loc.toString();
}
int tw = right - left;
Log.i(TAG, "encoding \"" + loc + "\" as \"" + lang + "\": " + tw + " x " + h);
byte[] langBytes = lang.getBytes();
out.setPixel(0, p, colorFor(tw & 0xff));
out.setPixel(1, p, colorFor(tw >>> 8));
out.setPixel(2, p, colorFor(h & 0xff));
out.setPixel(3, p, colorFor(h >>> 8));
out.setPixel(4, p, colorFor(langBytes.length));
int x = 5;
for (byte b : langBytes) {
out.setPixel(x, p, colorFor(b));
x++;
}
out.setPixel(x, p, colorFor(0));
p++;
out.setPixels(pixels, left, w, 0, p, tw, h);
p += h;
}
// if no languages match, suppress text display by using a
// single black pixel as the image.
out.setPixel(0, p, colorFor(1));
out.setPixel(1, p, colorFor(0));
out.setPixel(2, p, colorFor(1));
out.setPixel(3, p, colorFor(0));
out.setPixel(4, p, colorFor(0));
p++;
saveBitmap(out, "text-out.png");
Log.i(TAG, "wrote text-out.png");
}
}
