diff options
Diffstat (limited to 'tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java')
| -rw-r--r-- | tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java | 142 |
1 files changed, 88 insertions, 54 deletions
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java index 1bdd1ccead0e..801503b89e0d 100644 --- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java +++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/FontLoader.java @@ -29,6 +29,7 @@ import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.util.ArrayList; +import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.List; @@ -47,14 +48,13 @@ import javax.xml.parsers.SAXParserFactory; */ public final class FontLoader { private static final String FONTS_DEFINITIONS = "fonts.xml"; - + private static final String NODE_FONTS = "fonts"; private static final String NODE_FONT = "font"; private static final String NODE_NAME = "name"; - - private static final String ATTR_TTF = "ttf"; + private static final String NODE_FALLBACK = "fallback"; - private static final String[] NODE_LEVEL = { NODE_FONTS, NODE_FONT, NODE_NAME }; + private static final String ATTR_TTF = "ttf"; private static final String FONT_EXT = ".ttf"; @@ -62,7 +62,7 @@ public final class FontLoader { private static final String[] FONT_STYLE_BOLD = { "-Bold" }; private static final String[] FONT_STYLE_ITALIC = { "-Italic" }; private static final String[] FONT_STYLE_BOLDITALIC = { "-BoldItalic" }; - + // list of font style, in the order matching the Typeface Font style private static final String[][] FONT_STYLES = { FONT_STYLE_DEFAULT, @@ -70,23 +70,25 @@ public final class FontLoader { FONT_STYLE_ITALIC, FONT_STYLE_BOLDITALIC }; - + private final Map<String, String> mFamilyToTtf = new HashMap<String, String>(); private final Map<String, Map<Integer, Font>> mTtfToFontMap = new HashMap<String, Map<Integer, Font>>(); - + + private List<Font> mFallBackFonts = null; + public static FontLoader create(String fontOsLocation) { try { SAXParserFactory parserFactory = SAXParserFactory.newInstance(); parserFactory.setNamespaceAware(true); - + SAXParser parser = parserFactory.newSAXParser(); File f = new File(fontOsLocation + File.separator + FONTS_DEFINITIONS); - + FontDefinitionParser definitionParser = new FontDefinitionParser( fontOsLocation + File.separator); parser.parse(new FileInputStream(f), definitionParser); - + return definitionParser.getFontLoader(); } catch (ParserConfigurationException e) { // return null below @@ -101,12 +103,35 @@ public final class FontLoader { return null; } - private FontLoader(List<FontInfo> fontList) { + private FontLoader(List<FontInfo> fontList, List<String> fallBackList) { for (FontInfo info : fontList) { for (String family : info.families) { mFamilyToTtf.put(family, info.ttf); } } + + ArrayList<Font> list = new ArrayList<Font>(); + for (String path : fallBackList) { + File f = new File(path + FONT_EXT); + if (f.isFile()) { + try { + Font font = Font.createFont(Font.TRUETYPE_FONT, f); + if (font != null) { + list.add(font); + } + } catch (FontFormatException e) { + // skip this font name + } catch (IOException e) { + // skip this font name + } + } + } + + mFallBackFonts = Collections.unmodifiableList(list); + } + + public List<Font> getFallBackFonts() { + return mFallBackFonts; } public synchronized Font getFont(String family, int[] style) { @@ -116,25 +141,25 @@ public final class FontLoader { // get the ttf name from the family String ttf = mFamilyToTtf.get(family); - + if (ttf == null) { return null; } - + // get the font from the ttf Map<Integer, Font> styleMap = mTtfToFontMap.get(ttf); - + if (styleMap == null) { styleMap = new HashMap<Integer, Font>(); mTtfToFontMap.put(ttf, styleMap); } - + Font f = styleMap.get(style); - + if (f != null) { return f; } - + // if it doesn't exist, we create it, and we can't, we try with a simpler style switch (style[0]) { case Typeface.NORMAL: @@ -178,7 +203,7 @@ public final class FontLoader { private Font getFont(String ttf, String[] fontFileSuffix) { for (String suffix : fontFileSuffix) { String name = ttf + suffix + FONT_EXT; - + File f = new File(name); if (f.isFile()) { try { @@ -193,14 +218,14 @@ public final class FontLoader { } } } - + return null; } private final static class FontInfo { String ttf; final Set<String> families; - + FontInfo() { families = new HashSet<String>(); } @@ -208,19 +233,19 @@ public final class FontLoader { private final static class FontDefinitionParser extends DefaultHandler { private final String mOsFontsLocation; - - private int mDepth = 0; + private FontInfo mFontInfo = null; private final StringBuilder mBuilder = new StringBuilder(); - private final List<FontInfo> mFontList = new ArrayList<FontInfo>(); - + private List<FontInfo> mFontList; + private List<String> mFallBackList; + private FontDefinitionParser(String osFontsLocation) { super(); mOsFontsLocation = osFontsLocation; } - + FontLoader getFontLoader() { - return new FontLoader(mFontList); + return new FontLoader(mFontList, mFallBackList); } /* (non-Javadoc) @@ -229,10 +254,11 @@ public final class FontLoader { @Override public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException { - if (localName.equals(NODE_LEVEL[mDepth])) { - mDepth++; - - if (mDepth == 2) { // font level. + if (NODE_FONTS.equals(localName)) { + mFontList = new ArrayList<FontInfo>(); + mFallBackList = new ArrayList<String>(); + } else if (NODE_FONT.equals(localName)) { + if (mFontList != null) { String ttf = attributes.getValue(ATTR_TTF); if (ttf != null) { mFontInfo = new FontInfo(); @@ -240,42 +266,50 @@ public final class FontLoader { mFontList.add(mFontInfo); } } + } else if (NODE_NAME.equals(localName)) { + // do nothing, we'll handle the name in the endElement + } else if (NODE_FALLBACK.equals(localName)) { + if (mFallBackList != null) { + String ttf = attributes.getValue(ATTR_TTF); + if (ttf != null) { + mFallBackList.add(mOsFontsLocation + ttf); + } + } } + mBuilder.setLength(0); + super.startElement(uri, localName, name, attributes); } /* (non-Javadoc) * @see org.xml.sax.helpers.DefaultHandler#characters(char[], int, int) */ - @SuppressWarnings("unused") @Override public void characters(char[] ch, int start, int length) throws SAXException { - if (mFontInfo != null) { - mBuilder.append(ch, start, length); - } + mBuilder.append(ch, start, length); } /* (non-Javadoc) * @see org.xml.sax.helpers.DefaultHandler#endElement(java.lang.String, java.lang.String, java.lang.String) */ - @SuppressWarnings("unused") @Override public void endElement(String uri, String localName, String name) throws SAXException { - if (localName.equals(NODE_LEVEL[mDepth-1])) { - mDepth--; - if (mDepth == 2) { // end of a <name> node - if (mFontInfo != null) { - String family = trimXmlWhitespaces(mBuilder.toString()); - mFontInfo.families.add(family); - mBuilder.setLength(0); - } - } else if (mDepth == 1) { // end of a <font> node - mFontInfo = null; + if (NODE_FONTS.equals(localName)) { + // top level, do nothing + } else if (NODE_FONT.equals(localName)) { + mFontInfo = null; + } else if (NODE_NAME.equals(localName)) { + // handle a new name for an existing Font Info + if (mFontInfo != null) { + String family = trimXmlWhitespaces(mBuilder.toString()); + mFontInfo.families.add(family); } + } else if (NODE_FALLBACK.equals(localName)) { + // nothing to do here. } } - + private String trimXmlWhitespaces(String value) { if (value == null) { return null; @@ -283,7 +317,7 @@ public final class FontLoader { // look for carriage return and replace all whitespace around it by just 1 space. int index; - + while ((index = value.indexOf('\n')) != -1) { // look for whitespace on each side int left = index - 1; @@ -294,7 +328,7 @@ public final class FontLoader { break; } } - + int right = index + 1; int count = value.length(); while (right < count) { @@ -304,7 +338,7 @@ public final class FontLoader { break; } } - + // remove all between left and right (non inclusive) and replace by a single space. String leftString = null; if (left >= 0) { @@ -314,7 +348,7 @@ public final class FontLoader { if (right < count) { rightString = value.substring(right); } - + if (leftString != null) { value = leftString; if (rightString != null) { @@ -324,24 +358,24 @@ public final class FontLoader { value = rightString != null ? rightString : ""; } } - + // now we un-escape the string int length = value.length(); char[] buffer = value.toCharArray(); - + for (int i = 0 ; i < length ; i++) { if (buffer[i] == '\\') { if (buffer[i+1] == 'n') { // replace the char with \n buffer[i+1] = '\n'; } - + // offset the rest of the buffer since we go from 2 to 1 char System.arraycopy(buffer, i+1, buffer, i, length - i - 1); length--; } } - + return new String(buffer, 0, length); } |