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author | Tianjie Xu <xunchang@google.com> | 2018-11-29 19:28:44 +0100 |
---|---|---|
committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2018-11-29 19:28:44 +0100 |
commit | 697003dbce12d26c32fecb39959e566bb0a69684 (patch) | |
tree | a0134375a8fbce6145f4bc6a88ee4d7a36ec1ba5 | |
parent | Merge "ImageGenerator: switch to BreakIterator from icu library" (diff) | |
parent | ImageGenerator: Handle special characters in xml files (diff) | |
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-rw-r--r-- | tools/image_generator/ImageGenerator.java | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/tools/image_generator/ImageGenerator.java b/tools/image_generator/ImageGenerator.java index 19d187d24..50a498456 100644 --- a/tools/image_generator/ImageGenerator.java +++ b/tools/image_generator/ImageGenerator.java @@ -92,7 +92,7 @@ public class ImageGenerator { // Some localized font cannot draw the word "Android" and some PUNCTUATIONS; we need to fall // back to use our default latin font instead. - private static final char[] PUNCTUATIONS = {',', ';', '.', '!' }; + private static final char[] PUNCTUATIONS = {',', ';', '.', '!', '?'}; private static final String ANDROID_STRING = "Android"; @@ -214,8 +214,9 @@ public class ImageGenerator { index + ANDROID_STRING.length()); } - // Adds the attribute to use default font to draw the PUNCTUATIONS ", . !" + // Adds the attribute to use default font to draw the PUNCTUATIONS ", . ; ! ?" for (char punctuation : PUNCTUATIONS) { + // TODO (xunchang) handle the RTL language that has different directions for '?' if (text.indexOf(punctuation) != -1 && !textFont.canDisplay(punctuation)) { int index = 0; while ((index = text.indexOf(punctuation, index)) != -1) { @@ -229,6 +230,11 @@ public class ImageGenerator { mWrappedLines.add(new LineInfo(attributedText, width)); } + + /** Merges two WrappedTextInfo. */ + public void addLines(WrappedTextInfo other) { + mWrappedLines.addAll(other.mWrappedLines); + } } /** Initailizes the fields of the image image. */ @@ -393,15 +399,7 @@ public class ImageGenerator { "Can not find the font file " + fontName + " for language " + language); } - /** - * 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 WrappedTextInfo class with the width of each AttributedString smaller than - * mImageWidth pixels - */ + /** Wraps the text with a maximum of mImageWidth pixels per line. */ private WrappedTextInfo wrapText(String text, FontMetrics metrics) { WrappedTextInfo info = new WrappedTextInfo(); @@ -437,6 +435,29 @@ public class ImageGenerator { } /** + * Handles the special characters of the raw text embedded in the xml file; and 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 WrappedTextInfo class with the width of each AttributedString smaller than + * mImageWidth pixels + */ + private WrappedTextInfo processAndWrapText(String text, FontMetrics metrics) { + // Apostrophe is escaped in the xml file. + String processed = text.replace("\\'", "'"); + // The separator "\n\n" indicates a new line in the text. + String[] lines = processed.split("\\\\n\\\\n"); + WrappedTextInfo result = new WrappedTextInfo(); + for (String line : lines) { + result.addLines(wrapText(line, metrics)); + } + + return result; + } + + /** * 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 = @@ -477,7 +498,7 @@ public class ImageGenerator { throws IOException, FontFormatException { Graphics2D graphics = createGraphics(locale); FontMetrics fontMetrics = graphics.getFontMetrics(); - WrappedTextInfo wrappedTextInfo = wrapText(text, fontMetrics); + WrappedTextInfo wrappedTextInfo = processAndWrapText(text, fontMetrics); int textWidth = 0; for (WrappedTextInfo.LineInfo lineInfo : wrappedTextInfo.mWrappedLines) { @@ -512,7 +533,7 @@ public class ImageGenerator { Graphics2D graphics = createGraphics(locale); FontMetrics fontMetrics = graphics.getFontMetrics(); - WrappedTextInfo wrappedTextInfo = wrapText(text, fontMetrics); + WrappedTextInfo wrappedTextInfo = processAndWrapText(text, fontMetrics); // Marks the start y offset for the text image of current locale; and reserves one line to // encode the image metadata. |