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-rw-r--r--tools/image_generator/ImageGenerator.java951
1 files changed, 482 insertions, 469 deletions
diff --git a/tools/image_generator/ImageGenerator.java b/tools/image_generator/ImageGenerator.java
index 8cdd4944a..a011f10e4 100644
--- a/tools/image_generator/ImageGenerator.java
+++ b/tools/image_generator/ImageGenerator.java
@@ -50,504 +50,517 @@ import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
-/**
- * Command line tool to generate the localized image for recovery mode.
- */
+/** Command line tool to generate the localized image for recovery mode. */
public class ImageGenerator {
- // Initial height of the image to draw.
- private static final int INITIAL_HEIGHT = 20000;
-
- private static final float DEFAULT_FONT_SIZE = 40;
-
- // This is the canvas we used to draw texts.
- private BufferedImage mBufferedImage;
-
- // The width in pixels of our image. Once set, its value won't change.
- private final int mImageWidth;
-
- // The current height in pixels of our image. We will adjust the value when drawing more texts.
- private int mImageHeight;
-
- // The current vertical offset in pixels to draw the top edge of new text strings.
- private int mVerticalOffset;
-
- // The font size to draw the texts.
- private final float mFontSize;
-
- // The name description of the text to localize. It's used to find the translated strings in the
- // resource file.
- private final String mTextName;
-
- // The directory that contains all the needed font files (e.g. ttf, otf, ttc files).
- private final String mFontDirPath;
-
- // An explicit map from language to the font name to use.
- // The map is extracted from frameworks/base/data/fonts/fonts.xml.
- // And the language-subtag-registry is found in:
- // https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
- private static final String DEFAULT_FONT_NAME = "Roboto-Regular";
- private static final Map<String, String> LANGUAGE_TO_FONT_MAP = new TreeMap<String, String>() {{
- put("am", "NotoSansEthiopic-Regular");
- put("ar", "NotoNaskhArabicUI-Regular");
- put("as", "NotoSansBengaliUI-Regular");
- put("bn", "NotoSansBengaliUI-Regular");
- put("fa", "NotoNaskhArabicUI-Regular");
- put("gu", "NotoSansGujaratiUI-Regular");
- put("hi", "NotoSansDevanagariUI-Regular");
- put("hy", "NotoSansArmenian-Regular");
- put("iw", "NotoSansHebrew-Regular");
- put("ja", "NotoSansCJK-Regular");
- put("ka", "NotoSansGeorgian-Regular");
- put("ko", "NotoSansCJK-Regular");
- put("km", "NotoSansKhmerUI-Regular");
- put("kn", "NotoSansKannadaUI-Regular");
- put("lo", "NotoSansLaoUI-Regular");
- put("ml", "NotoSansMalayalamUI-Regular");
- put("mr", "NotoSansDevanagariUI-Regular");
- put("my", "NotoSansMyanmarUI-Regular");
- put("ne", "NotoSansDevanagariUI-Regular");
- put("or", "NotoSansOriya-Regular");
- put("pa", "NotoSansGurmukhiUI-Regular");
- put("si", "NotoSansSinhala-Regular");
- put("ta", "NotoSansTamilUI-Regular");
- put("te", "NotoSansTeluguUI-Regular");
- put("th", "NotoSansThaiUI-Regular");
- put("ur", "NotoNaskhArabicUI-Regular");
- put("zh", "NotoSansCJK-Regular");
- }};
-
- // Languages that write from right to left.
- private static final Set<String> RTL_LANGUAGE = new HashSet<String>() {{
- add("ar"); // Arabic
- add("fa"); // Persian
- add("he"); // Hebrew
- add("iw"); // Hebrew
- add("ur"); // Urdu
- }};
-
- // Languages that breaks on arbitrary characters.
- // TODO(xunchang) switch to icu library if possible.
- private static final Set<String> LOGOGRAM_LANGUAGE = new HashSet<String>() {{
- add("ja"); // Japanese
- add("km"); // Khmer
- add("ko"); // Korean
- add("lo"); // Lao
- add("zh"); // Chinese
- }};
-
- /**
- * Exception to indicate the failure to find the translated text strings.
- */
- public static class LocalizedStringNotFoundException extends Exception {
- public LocalizedStringNotFoundException(String message) {
- super(message);
+ // Initial height of the image to draw.
+ private static final int INITIAL_HEIGHT = 20000;
+
+ private static final float DEFAULT_FONT_SIZE = 40;
+
+ // This is the canvas we used to draw texts.
+ private BufferedImage mBufferedImage;
+
+ // The width in pixels of our image. Once set, its value won't change.
+ private final int mImageWidth;
+
+ // The current height in pixels of our image. We will adjust the value when drawing more texts.
+ private int mImageHeight;
+
+ // The current vertical offset in pixels to draw the top edge of new text strings.
+ private int mVerticalOffset;
+
+ // The font size to draw the texts.
+ private final float mFontSize;
+
+ // The name description of the text to localize. It's used to find the translated strings in the
+ // resource file.
+ private final String mTextName;
+
+ // The directory that contains all the needed font files (e.g. ttf, otf, ttc files).
+ private final String mFontDirPath;
+
+ // An explicit map from language to the font name to use.
+ // The map is extracted from frameworks/base/data/fonts/fonts.xml.
+ // And the language-subtag-registry is found in:
+ // https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
+ private static final String DEFAULT_FONT_NAME = "Roboto-Regular";
+ private static final Map<String, String> LANGUAGE_TO_FONT_MAP =
+ new TreeMap<String, String>() {
+ {
+ put("am", "NotoSansEthiopic-Regular");
+ put("ar", "NotoNaskhArabicUI-Regular");
+ put("as", "NotoSansBengaliUI-Regular");
+ put("bn", "NotoSansBengaliUI-Regular");
+ put("fa", "NotoNaskhArabicUI-Regular");
+ put("gu", "NotoSansGujaratiUI-Regular");
+ put("hi", "NotoSansDevanagariUI-Regular");
+ put("hy", "NotoSansArmenian-Regular");
+ put("iw", "NotoSansHebrew-Regular");
+ put("ja", "NotoSansCJK-Regular");
+ put("ka", "NotoSansGeorgian-Regular");
+ put("ko", "NotoSansCJK-Regular");
+ put("km", "NotoSansKhmerUI-Regular");
+ put("kn", "NotoSansKannadaUI-Regular");
+ put("lo", "NotoSansLaoUI-Regular");
+ put("ml", "NotoSansMalayalamUI-Regular");
+ put("mr", "NotoSansDevanagariUI-Regular");
+ put("my", "NotoSansMyanmarUI-Regular");
+ put("ne", "NotoSansDevanagariUI-Regular");
+ put("or", "NotoSansOriya-Regular");
+ put("pa", "NotoSansGurmukhiUI-Regular");
+ put("si", "NotoSansSinhala-Regular");
+ put("ta", "NotoSansTamilUI-Regular");
+ put("te", "NotoSansTeluguUI-Regular");
+ put("th", "NotoSansThaiUI-Regular");
+ put("ur", "NotoNaskhArabicUI-Regular");
+ put("zh", "NotoSansCJK-Regular");
+ }
+ };
+
+ // Languages that write from right to left.
+ private static final Set<String> RTL_LANGUAGE =
+ new HashSet<String>() {
+ {
+ add("ar"); // Arabic
+ add("fa"); // Persian
+ add("he"); // Hebrew
+ add("iw"); // Hebrew
+ add("ur"); // Urdu
+ }
+ };
+
+ // Languages that breaks on arbitrary characters.
+ // TODO(xunchang) switch to icu library if possible.
+ private static final Set<String> LOGOGRAM_LANGUAGE =
+ new HashSet<String>() {
+ {
+ add("ja"); // Japanese
+ add("km"); // Khmer
+ add("ko"); // Korean
+ add("lo"); // Lao
+ add("zh"); // Chinese
+ }
+ };
+
+ /** Exception to indicate the failure to find the translated text strings. */
+ public static class LocalizedStringNotFoundException extends Exception {
+ public LocalizedStringNotFoundException(String message) {
+ super(message);
+ }
+
+ public LocalizedStringNotFoundException(String message, Throwable cause) {
+ super(message, cause);
+ }
}
- public LocalizedStringNotFoundException(String message, Throwable cause) {
- super(message, cause);
- }
- }
-
- /**
- * Initailizes the fields of the image image.
- */
- public ImageGenerator(int imageWidth, String textName, float fontSize, String fontDirPath) {
- mImageWidth = imageWidth;
- mImageHeight = INITIAL_HEIGHT;
- mVerticalOffset = 0;
-
- // Initialize the canvas with the default height.
- mBufferedImage = new BufferedImage(mImageWidth, mImageHeight, BufferedImage.TYPE_BYTE_GRAY);
-
- mTextName = textName;
- mFontSize = fontSize;
- mFontDirPath = fontDirPath;
- }
-
- /**
- * Finds the translated text string for the given textName by parsing the resourceFile.
- * Example of the xml fields:
- * <resources xmlns:android="http://schemas.android.com/apk/res/android">
- * <string name="recovery_installing_security" msgid="9184031299717114342">
- * "Sicherheitsupdate wird installiert"</string>
- * </resources>
- *
- * @param resourceFile the input resource file in xml format.
- * @param textName the name description of the text.
- *
- * @return the string representation of the translated text.
- */
- private String getTextString(File resourceFile, String textName) throws IOException,
- ParserConfigurationException, org.xml.sax.SAXException, LocalizedStringNotFoundException {
- DocumentBuilderFactory builder = DocumentBuilderFactory.newInstance();
- DocumentBuilder db = builder.newDocumentBuilder();
-
- Document doc = db.parse(resourceFile);
- doc.getDocumentElement().normalize();
-
- NodeList nodeList = doc.getElementsByTagName("string");
- for (int i = 0; i < nodeList.getLength(); i++) {
- Node node = nodeList.item(i);
- String name = node.getAttributes().getNamedItem("name").getNodeValue();
- if (name.equals(textName)) {
- return node.getTextContent();
- }
- }
+ /** Initailizes the fields of the image image. */
+ public ImageGenerator(int imageWidth, String textName, float fontSize, String fontDirPath) {
+ mImageWidth = imageWidth;
+ mImageHeight = INITIAL_HEIGHT;
+ mVerticalOffset = 0;
- throw new LocalizedStringNotFoundException(textName + " not found in "
- + resourceFile.getName());
- }
-
- /**
- * Constructs the locale from the name of the resource file.
- */
- private Locale getLocaleFromFilename(String filename) throws IOException {
- // Gets the locale string by trimming the top "values-".
- String localeString = filename.substring(7);
- if (localeString.matches("[A-Za-z]+")) {
- return Locale.forLanguageTag(localeString);
- }
- if (localeString.matches("[A-Za-z]+-r[A-Za-z]+")) {
- // "${Language}-r${Region}". e.g. en-rGB
- String[] tokens = localeString.split("-r");
- return Locale.forLanguageTag(String.join("-", tokens));
- }
- if (localeString.startsWith("b+")) {
- // The special case of b+sr+Latn, which has the form "b+${Language}+${ScriptName}"
- String[] tokens = localeString.substring(2).split("\\+");
- return Locale.forLanguageTag(String.join("-", tokens));
- }
+ // Initialize the canvas with the default height.
+ mBufferedImage = new BufferedImage(mImageWidth, mImageHeight, BufferedImage.TYPE_BYTE_GRAY);
- throw new IOException("Unrecognized locale string " + localeString);
- }
-
- /**
- * Iterates over the xml files in the format of values-$LOCALE/strings.xml under the resource
- * directory and collect the translated text.
- *
- * @param resourcePath the path to the resource directory
- *
- * @return a map with the locale as key, and translated text as value
- *
- * @throws LocalizedStringNotFoundException if we cannot find the translated text for the given
- * locale
- **/
- public Map<Locale, String> readLocalizedStringFromXmls(String resourcePath) throws
- IOException, LocalizedStringNotFoundException {
- File resourceDir = new File(resourcePath);
- if (!resourceDir.isDirectory()) {
- throw new LocalizedStringNotFoundException(resourcePath + " is not a directory.");
+ mTextName = textName;
+ mFontSize = fontSize;
+ mFontDirPath = fontDirPath;
}
- Map<Locale, String> result =
- // Overrides the string comparator so that sr is sorted behind sr-Latn. And thus recovery
- // can find the most relevant locale when going down the list.
- new TreeMap<>((Locale l1, Locale l2) -> {
- if (l1.toLanguageTag().equals(l2.toLanguageTag())) {
- return 0;
- }
- if (l1.getLanguage().equals(l2.toLanguageTag())) {
- return -1;
- }
- if (l2.getLanguage().equals(l1.toLanguageTag())) {
- return 1;
- }
- return l1.toLanguageTag().compareTo(l2.toLanguageTag());
- });
-
- // Find all the localized resource subdirectories in the format of values-$LOCALE
- String[] nameList = resourceDir.list(
- (File file, String name) -> name.startsWith("values-"));
- for (String name : nameList) {
- File textFile = new File(resourcePath, name + "/strings.xml");
- String localizedText;
- try {
- localizedText = getTextString(textFile, mTextName);
- } catch (IOException | ParserConfigurationException | org.xml.sax.SAXException e) {
+ /**
+ * Finds the translated text string for the given textName by parsing the resourceFile. Example
+ * of the xml fields: <resources xmlns:android="http://schemas.android.com/apk/res/android">
+ * <string name="recovery_installing_security" msgid="9184031299717114342"> "Sicherheitsupdate
+ * wird installiert"</string> </resources>
+ *
+ * @param resourceFile the input resource file in xml format.
+ * @param textName the name description of the text.
+ * @return the string representation of the translated text.
+ */
+ private String getTextString(File resourceFile, String textName)
+ throws IOException, ParserConfigurationException, org.xml.sax.SAXException,
+ LocalizedStringNotFoundException {
+ DocumentBuilderFactory builder = DocumentBuilderFactory.newInstance();
+ DocumentBuilder db = builder.newDocumentBuilder();
+
+ Document doc = db.parse(resourceFile);
+ doc.getDocumentElement().normalize();
+
+ NodeList nodeList = doc.getElementsByTagName("string");
+ for (int i = 0; i < nodeList.getLength(); i++) {
+ Node node = nodeList.item(i);
+ String name = node.getAttributes().getNamedItem("name").getNodeValue();
+ if (name.equals(textName)) {
+ return node.getTextContent();
+ }
+ }
+
throw new LocalizedStringNotFoundException(
- "Failed to read the translated text for locale " + name, e);
- }
+ textName + " not found in " + resourceFile.getName());
+ }
- Locale locale = getLocaleFromFilename(name);
- // Removes the double quotation mark from the text.
- result.put(locale, localizedText.substring(1, localizedText.length() - 1));
+ /** Constructs the locale from the name of the resource file. */
+ private Locale getLocaleFromFilename(String filename) throws IOException {
+ // Gets the locale string by trimming the top "values-".
+ String localeString = filename.substring(7);
+ if (localeString.matches("[A-Za-z]+")) {
+ return Locale.forLanguageTag(localeString);
+ }
+ if (localeString.matches("[A-Za-z]+-r[A-Za-z]+")) {
+ // "${Language}-r${Region}". e.g. en-rGB
+ String[] tokens = localeString.split("-r");
+ return Locale.forLanguageTag(String.join("-", tokens));
+ }
+ if (localeString.startsWith("b+")) {
+ // The special case of b+sr+Latn, which has the form "b+${Language}+${ScriptName}"
+ String[] tokens = localeString.substring(2).split("\\+");
+ return Locale.forLanguageTag(String.join("-", tokens));
+ }
+
+ throw new IOException("Unrecognized locale string " + localeString);
}
- return result;
- }
-
- /**
- * Returns a font object associated given the given locale
- *
- * @throws IOException if the font file fails to open
- * @throws FontFormatException if the font file doesn't have the expected format
- */
- private Font loadFontsByLocale(String language) throws IOException, FontFormatException {
- String fontName = LANGUAGE_TO_FONT_MAP.getOrDefault(language, DEFAULT_FONT_NAME);
- String[] suffixes = {".otf", ".ttf", ".ttc"};
- for (String suffix : suffixes ) {
- File fontFile = new File(mFontDirPath, fontName + suffix);
- if (fontFile.isFile()) {
- return Font.createFont(Font.TRUETYPE_FONT, fontFile).deriveFont(mFontSize);
- }
+ /**
+ * Iterates over the xml files in the format of values-$LOCALE/strings.xml under the resource
+ * directory and collect the translated text.
+ *
+ * @param resourcePath the path to the resource directory
+ * @return a map with the locale as key, and translated text as value
+ * @throws LocalizedStringNotFoundException if we cannot find the translated text for the given
+ * locale
+ */
+ public Map<Locale, String> readLocalizedStringFromXmls(String resourcePath)
+ throws IOException, LocalizedStringNotFoundException {
+ File resourceDir = new File(resourcePath);
+ if (!resourceDir.isDirectory()) {
+ throw new LocalizedStringNotFoundException(resourcePath + " is not a directory.");
+ }
+
+ Map<Locale, String> result =
+ // Overrides the string comparator so that sr is sorted behind sr-Latn. And thus
+ // recovery can find the most relevant locale when going down the list.
+ new TreeMap<>(
+ (Locale l1, Locale l2) -> {
+ if (l1.toLanguageTag().equals(l2.toLanguageTag())) {
+ return 0;
+ }
+ if (l1.getLanguage().equals(l2.toLanguageTag())) {
+ return -1;
+ }
+ if (l2.getLanguage().equals(l1.toLanguageTag())) {
+ return 1;
+ }
+ return l1.toLanguageTag().compareTo(l2.toLanguageTag());
+ });
+
+ // Find all the localized resource subdirectories in the format of values-$LOCALE
+ String[] nameList =
+ resourceDir.list((File file, String name) -> name.startsWith("values-"));
+ for (String name : nameList) {
+ File textFile = new File(resourcePath, name + "/strings.xml");
+ String localizedText;
+ try {
+ localizedText = getTextString(textFile, mTextName);
+ } catch (IOException | ParserConfigurationException | org.xml.sax.SAXException e) {
+ throw new LocalizedStringNotFoundException(
+ "Failed to read the translated text for locale " + name, e);
+ }
+
+ Locale locale = getLocaleFromFilename(name);
+ // Removes the double quotation mark from the text.
+ result.put(locale, localizedText.substring(1, localizedText.length() - 1));
+ }
+
+ return result;
}
- throw new IOException("Can not find the font file " + fontName + " for language " + language);
- }
-
- /**
- * Separates the text string by spaces and wraps it by words.
- **/
- private List<String> wrapTextByWords(String text, FontMetrics metrics) {
- List<String> wrappedText = new ArrayList<>();
- StringTokenizer st = new StringTokenizer(text, " \n");
-
- // TODO(xunchang). We assume that all words can fit on the screen. Raise an
- // IllegalStateException if the word is wider than the image width.
- StringBuilder line = new StringBuilder();
- while (st.hasMoreTokens()) {
- String token = st.nextToken();
- if (metrics.stringWidth(line + token + " ") > mImageWidth) {
- wrappedText.add(line.toString());
- line = new StringBuilder();
- }
- line.append(token).append(" ");
+ /**
+ * Returns a font object associated given the given locale
+ *
+ * @throws IOException if the font file fails to open
+ * @throws FontFormatException if the font file doesn't have the expected format
+ */
+ private Font loadFontsByLocale(String language) throws IOException, FontFormatException {
+ String fontName = LANGUAGE_TO_FONT_MAP.getOrDefault(language, DEFAULT_FONT_NAME);
+ String[] suffixes = {".otf", ".ttf", ".ttc"};
+ for (String suffix : suffixes) {
+ File fontFile = new File(mFontDirPath, fontName + suffix);
+ if (fontFile.isFile()) {
+ return Font.createFont(Font.TRUETYPE_FONT, fontFile).deriveFont(mFontSize);
+ }
+ }
+
+ throw new IOException(
+ "Can not find the font file " + fontName + " for language " + language);
}
- wrappedText.add(line.toString());
- return wrappedText;
- }
+ /** Separates the text string by spaces and wraps it by words. */
+ private List<String> wrapTextByWords(String text, FontMetrics metrics) {
+ List<String> wrappedText = new ArrayList<>();
+ StringTokenizer st = new StringTokenizer(text, " \n");
+
+ // TODO(xunchang). We assume that all words can fit on the screen. Raise an
+ // IllegalStateException if the word is wider than the image width.
+ StringBuilder line = new StringBuilder();
+ while (st.hasMoreTokens()) {
+ String token = st.nextToken();
+ if (metrics.stringWidth(line + token + " ") > mImageWidth) {
+ wrappedText.add(line.toString());
+ line = new StringBuilder();
+ }
+ line.append(token).append(" ");
+ }
+ wrappedText.add(line.toString());
- /**
- * One character is a word for CJK.
- */
- private List<String> wrapTextByCharacters(String text, FontMetrics metrics) {
- List<String> wrappedText = new ArrayList<>();
+ return wrappedText;
+ }
- StringBuilder line = new StringBuilder();
- for (char token : text.toCharArray()) {
- if (metrics.stringWidth(line + Character.toString(token)) > mImageWidth) {
+ /** One character is a word for CJK. */
+ private List<String> wrapTextByCharacters(String text, FontMetrics metrics) {
+ List<String> wrappedText = new ArrayList<>();
+
+ StringBuilder line = new StringBuilder();
+ for (char token : text.toCharArray()) {
+ if (metrics.stringWidth(line + Character.toString(token)) > mImageWidth) {
+ wrappedText.add(line.toString());
+ line = new StringBuilder();
+ }
+ line.append(token);
+ }
wrappedText.add(line.toString());
- line = new StringBuilder();
- }
- line.append(token);
- }
- wrappedText.add(line.toString());
-
- return wrappedText;
- }
-
- /**
- * Wraps the text with a maximum of mImageWidth pixels per line.
- *
- * @param text the string representation of text to wrap
- * @param metrics the metrics of the Font used to draw the text; it gives the width in pixels of
- * the text given its string representation
- *
- * @return a list of strings with their width smaller than mImageWidth pixels
- */
- private List<String> wrapText(String text, FontMetrics metrics, String language) {
- if (LOGOGRAM_LANGUAGE.contains(language)) {
- return wrapTextByCharacters(text, metrics);
- }
- return wrapTextByWords(text, metrics);
- }
-
- /**
- * Encodes the information of the text image for |locale|.
- * According to minui/resources.cpp, the width, height and locale of the image is decoded as:
- * int w = (row[1] << 8) | row[0];
- * int h = (row[3] << 8) | row[2];
- * __unused int len = row[4];
- * char* loc = reinterpret_cast<char*>(&row[5]);
- */
- private List<Integer> encodeTextInfo(int width, int height, String locale) {
- List<Integer> info = new ArrayList<>(Arrays.asList(width & 0xff, width >> 8,
- height & 0xff, height >> 8, locale.length()));
-
- byte[] localeBytes = locale.getBytes();
- for (byte b: localeBytes) {
- info.add((int)b);
+ return wrappedText;
}
- info.add(0);
-
- return info;
- }
-
- /**
- * Draws the text string on the canvas for given locale.
- *
- * @param text the string to draw on canvas
- * @param locale the current locale tag of the string to draw
- *
- * @throws IOException if we cannot find the corresponding font file for the given locale.
- * @throws FontFormatException if we failed to load the font file for the given locale.
- */
- private void drawText(String text, Locale locale, String languageTag, boolean centralAlignment)
- throws IOException, FontFormatException {
- Graphics2D graphics = mBufferedImage.createGraphics();
- graphics.setColor(Color.WHITE);
- graphics.setRenderingHint(
- RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
- graphics.setFont(loadFontsByLocale(locale.getLanguage()));
-
- System.out.println("Encoding \"" + locale + "\" as \"" + languageTag + "\": " + text);
-
- FontMetrics fontMetrics = graphics.getFontMetrics();
- List<String> wrappedText = wrapText(text, fontMetrics, locale.getLanguage());
-
- // Marks the start y offset for the text image of current locale; and reserves one line to
- // encode the image metadata.
- int currentImageStart = mVerticalOffset;
- mVerticalOffset += 1;
- for (String line : wrappedText) {
- int lineHeight = fontMetrics.getHeight();
- // Doubles the height of the image if we are short of space.
- if (mVerticalOffset + lineHeight >= mImageHeight) {
- resizeHeight(mImageHeight * 2);
- }
-
- // Draws the text at mVerticalOffset and increments the offset with line space.
- int baseLine = mVerticalOffset + lineHeight - fontMetrics.getDescent();
-
- // Draws from right if it's an RTL language.
- int x = centralAlignment ? (mImageWidth - fontMetrics.stringWidth(line)) / 2 :
- RTL_LANGUAGE.contains(languageTag) ? mImageWidth - fontMetrics.stringWidth(line) : 0;
-
- graphics.drawString(line, x, baseLine);
-
- mVerticalOffset += lineHeight;
+
+ /**
+ * Wraps the text with a maximum of mImageWidth pixels per line.
+ *
+ * @param text the string representation of text to wrap
+ * @param metrics the metrics of the Font used to draw the text; it gives the width in pixels of
+ * the text given its string representation
+ * @return a list of strings with their width smaller than mImageWidth pixels
+ */
+ private List<String> wrapText(String text, FontMetrics metrics, String language) {
+ if (LOGOGRAM_LANGUAGE.contains(language)) {
+ return wrapTextByCharacters(text, metrics);
+ }
+
+ return wrapTextByWords(text, metrics);
}
- // Encodes the metadata of the current localized image as pixels.
- int currentImageHeight = mVerticalOffset - currentImageStart - 1;
- List<Integer> info = encodeTextInfo(mImageWidth, currentImageHeight, languageTag);
- for (int i = 0; i < info.size(); i++) {
- int pixel[] = { info.get(i) };
- mBufferedImage.getRaster().setPixel(i, currentImageStart, pixel);
+ /**
+ * Encodes the information of the text image for |locale|. According to minui/resources.cpp, the
+ * width, height and locale of the image is decoded as: int w = (row[1] << 8) | row[0]; int h =
+ * (row[3] << 8) | row[2]; __unused int len = row[4]; char* loc =
+ * reinterpret_cast<char*>(&row[5]);
+ */
+ private List<Integer> encodeTextInfo(int width, int height, String locale) {
+ List<Integer> info =
+ new ArrayList<>(
+ Arrays.asList(
+ width & 0xff,
+ width >> 8,
+ height & 0xff,
+ height >> 8,
+ locale.length()));
+
+ byte[] localeBytes = locale.getBytes();
+ for (byte b : localeBytes) {
+ info.add((int) b);
+ }
+ info.add(0);
+
+ return info;
}
- }
-
- /**
- * Redraws the image with the new height.
- *
- * @param height the new height of the image in pixels.
- */
- private void resizeHeight(int height) {
- BufferedImage resizedImage =
- new BufferedImage(mImageWidth, height, BufferedImage.TYPE_BYTE_GRAY);
- Graphics2D graphic = resizedImage.createGraphics();
- graphic.drawImage(mBufferedImage, 0, 0, null);
- graphic.dispose();
-
- mBufferedImage = resizedImage;
- mImageHeight = height;
- }
-
- /**
- * This function draws the font characters and saves the result to outputPath.
- *
- * @param localizedTextMap a map from locale to its translated text string
- * @param outputPath the path to write the generated image file.
- *
- * @throws FontFormatException if there's a format error in one of the font file
- * @throws IOException if we cannot find the font file for one of the locale, or we failed to
- * write the image file.
- */
- public void generateImage(Map<Locale, String> localizedTextMap, String outputPath) throws
- FontFormatException, IOException {
- Map<String, Integer> languageCount = new TreeMap<>();
- for (Locale locale : localizedTextMap.keySet()) {
- String language = locale.getLanguage();
- languageCount.put(language, languageCount.getOrDefault(language, 0) + 1 );
+
+ /**
+ * Draws the text string on the canvas for given locale.
+ *
+ * @param text the string to draw on canvas
+ * @param locale the current locale tag of the string to draw
+ * @throws IOException if we cannot find the corresponding font file for the given locale.
+ * @throws FontFormatException if we failed to load the font file for the given locale.
+ */
+ private void drawText(String text, Locale locale, String languageTag, boolean centralAlignment)
+ throws IOException, FontFormatException {
+ Graphics2D graphics = mBufferedImage.createGraphics();
+ graphics.setColor(Color.WHITE);
+ graphics.setRenderingHint(
+ RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
+ graphics.setFont(loadFontsByLocale(locale.getLanguage()));
+
+ System.out.println("Encoding \"" + locale + "\" as \"" + languageTag + "\": " + text);
+
+ FontMetrics fontMetrics = graphics.getFontMetrics();
+ List<String> wrappedText = wrapText(text, fontMetrics, locale.getLanguage());
+
+ // Marks the start y offset for the text image of current locale; and reserves one line to
+ // encode the image metadata.
+ int currentImageStart = mVerticalOffset;
+ mVerticalOffset += 1;
+ for (String line : wrappedText) {
+ int lineHeight = fontMetrics.getHeight();
+ // Doubles the height of the image if we are short of space.
+ if (mVerticalOffset + lineHeight >= mImageHeight) {
+ resizeHeight(mImageHeight * 2);
+ }
+
+ // Draws the text at mVerticalOffset and increments the offset with line space.
+ int baseLine = mVerticalOffset + lineHeight - fontMetrics.getDescent();
+
+ // Draws from right if it's an RTL language.
+ int x =
+ centralAlignment
+ ? (mImageWidth - fontMetrics.stringWidth(line)) / 2
+ : RTL_LANGUAGE.contains(languageTag)
+ ? mImageWidth - fontMetrics.stringWidth(line)
+ : 0;
+
+ graphics.drawString(line, x, baseLine);
+
+ mVerticalOffset += lineHeight;
+ }
+
+ // Encodes the metadata of the current localized image as pixels.
+ int currentImageHeight = mVerticalOffset - currentImageStart - 1;
+ List<Integer> info = encodeTextInfo(mImageWidth, currentImageHeight, languageTag);
+ for (int i = 0; i < info.size(); i++) {
+ int[] pixel = {info.get(i)};
+ mBufferedImage.getRaster().setPixel(i, currentImageStart, pixel);
+ }
}
- for (Locale locale : localizedTextMap.keySet()) {
- Integer count = languageCount.get(locale.getLanguage());
- // Recovery expects en-US instead of en_US.
- String languageTag = locale.toLanguageTag();
- if (count == 1) {
- // Make the last country variant for a given language be the catch-all for that language.
- languageTag = locale.getLanguage();
- } else {
- languageCount.put(locale.getLanguage(), count - 1);
- }
-
- drawText(localizedTextMap.get(locale), locale, languageTag, false);
+ /**
+ * Redraws the image with the new height.
+ *
+ * @param height the new height of the image in pixels.
+ */
+ private void resizeHeight(int height) {
+ BufferedImage resizedImage =
+ new BufferedImage(mImageWidth, height, BufferedImage.TYPE_BYTE_GRAY);
+ Graphics2D graphic = resizedImage.createGraphics();
+ graphic.drawImage(mBufferedImage, 0, 0, null);
+ graphic.dispose();
+
+ mBufferedImage = resizedImage;
+ mImageHeight = height;
}
- // TODO(xunchang) adjust the width to save some space if all texts are smaller than imageWidth.
- resizeHeight(mVerticalOffset);
- ImageIO.write(mBufferedImage, "png", new File(outputPath));
- }
-
- public static void printUsage(Options options) {
- new HelpFormatter().printHelp("java -jar path_to_jar [required_options]", options);
-
- }
-
- public static Options createOptions() {
- Options options = new Options();
- options.addOption(OptionBuilder
- .withLongOpt("image_width")
- .withDescription("The initial width of the image in pixels.")
- .hasArgs(1)
- .isRequired()
- .create());
-
- options.addOption(OptionBuilder
- .withLongOpt("text_name")
- .withDescription("The description of the text string, e.g. recovery_erasing")
- .hasArgs(1)
- .isRequired()
- .create());
-
- options.addOption(OptionBuilder
- .withLongOpt("font_dir")
- .withDescription("The directory that contains all the support font format files, e.g."
- + " $OUT/system/fonts/")
- .hasArgs(1)
- .isRequired()
- .create());
-
- options.addOption(OptionBuilder
- .withLongOpt("resource_dir")
- .withDescription("The resource directory that contains all the translated strings in xml"
- + " format, e.g. bootable/recovery/tools/recovery_l10n/res/")
- .hasArgs(1)
- .isRequired()
- .create());
-
- options.addOption(OptionBuilder
- .withLongOpt("output_file")
- .withDescription("Path to the generated image")
- .hasArgs(1)
- .isRequired()
- .create());
-
- return options;
- }
-
- public static void main(String[] args) throws NumberFormatException, IOException,
- FontFormatException, LocalizedStringNotFoundException {
- Options options = createOptions();
- CommandLine cmd;
- try {
- cmd = new GnuParser().parse(options, args);
- } catch (ParseException e) {
- System.err.println(e.getMessage());
- printUsage(options);
- return;
+ /**
+ * This function draws the font characters and saves the result to outputPath.
+ *
+ * @param localizedTextMap a map from locale to its translated text string
+ * @param outputPath the path to write the generated image file.
+ * @throws FontFormatException if there's a format error in one of the font file
+ * @throws IOException if we cannot find the font file for one of the locale, or we failed to
+ * write the image file.
+ */
+ public void generateImage(Map<Locale, String> localizedTextMap, String outputPath)
+ throws FontFormatException, IOException {
+ Map<String, Integer> languageCount = new TreeMap<>();
+ for (Locale locale : localizedTextMap.keySet()) {
+ String language = locale.getLanguage();
+ languageCount.put(language, languageCount.getOrDefault(language, 0) + 1);
+ }
+
+ for (Locale locale : localizedTextMap.keySet()) {
+ Integer count = languageCount.get(locale.getLanguage());
+ // Recovery expects en-US instead of en_US.
+ String languageTag = locale.toLanguageTag();
+ if (count == 1) {
+ // Make the last country variant for a given language be the catch-all for that
+ // language.
+ languageTag = locale.getLanguage();
+ } else {
+ languageCount.put(locale.getLanguage(), count - 1);
+ }
+
+ drawText(localizedTextMap.get(locale), locale, languageTag, false);
+ }
+
+ // TODO(xunchang) adjust the width to save some space if all texts are smaller than
+ // imageWidth.
+ resizeHeight(mVerticalOffset);
+ ImageIO.write(mBufferedImage, "png", new File(outputPath));
}
- int imageWidth = Integer.parseUnsignedInt(cmd.getOptionValue("image_width"));
+ /** Prints the helper message. */
+ public static void printUsage(Options options) {
+ new HelpFormatter().printHelp("java -jar path_to_jar [required_options]", options);
+ }
- ImageGenerator imageGenerator = new ImageGenerator(imageWidth, cmd.getOptionValue("text_name"),
- DEFAULT_FONT_SIZE, cmd.getOptionValue("font_dir"));
+ /** Creates the command line options. */
+ public static Options createOptions() {
+ Options options = new Options();
+ options.addOption(
+ OptionBuilder.withLongOpt("image_width")
+ .withDescription("The initial width of the image in pixels.")
+ .hasArgs(1)
+ .isRequired()
+ .create());
+
+ options.addOption(
+ OptionBuilder.withLongOpt("text_name")
+ .withDescription(
+ "The description of the text string, e.g. recovery_erasing")
+ .hasArgs(1)
+ .isRequired()
+ .create());
+
+ options.addOption(
+ OptionBuilder.withLongOpt("font_dir")
+ .withDescription(
+ "The directory that contains all the support font format files, "
+ + "e.g. $OUT/system/fonts/")
+ .hasArgs(1)
+ .isRequired()
+ .create());
+
+ options.addOption(
+ OptionBuilder.withLongOpt("resource_dir")
+ .withDescription(
+ "The resource directory that contains all the translated strings in"
+ + " xml format, e.g."
+ + " bootable/recovery/tools/recovery_l10n/res/")
+ .hasArgs(1)
+ .isRequired()
+ .create());
+
+ options.addOption(
+ OptionBuilder.withLongOpt("output_file")
+ .withDescription("Path to the generated image")
+ .hasArgs(1)
+ .isRequired()
+ .create());
+
+ return options;
+ }
- Map<Locale, String> localizedStringMap =
- imageGenerator.readLocalizedStringFromXmls(cmd.getOptionValue("resource_dir"));
- imageGenerator.generateImage(localizedStringMap, cmd.getOptionValue("output_file"));
- }
+ /** The main function parses the command line options and generates the desired text image. */
+ public static void main(String[] args)
+ throws NumberFormatException, IOException, FontFormatException,
+ LocalizedStringNotFoundException {
+ Options options = createOptions();
+ CommandLine cmd;
+ try {
+ cmd = new GnuParser().parse(options, args);
+ } catch (ParseException e) {
+ System.err.println(e.getMessage());
+ printUsage(options);
+ return;
+ }
+
+ int imageWidth = Integer.parseUnsignedInt(cmd.getOptionValue("image_width"));
+
+ ImageGenerator imageGenerator =
+ new ImageGenerator(
+ imageWidth,
+ cmd.getOptionValue("text_name"),
+ DEFAULT_FONT_SIZE,
+ cmd.getOptionValue("font_dir"));
+
+ Map<Locale, String> localizedStringMap =
+ imageGenerator.readLocalizedStringFromXmls(cmd.getOptionValue("resource_dir"));
+ imageGenerator.generateImage(localizedStringMap, cmd.getOptionValue("output_file"));
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 13:50:55 +0100