diff options
Diffstat (limited to 'libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java')
| -rw-r--r-- | libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java | 179 |
1 files changed, 159 insertions, 20 deletions
diff --git a/libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java b/libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java index ef9507f3050..ab3861be1a9 100644 --- a/libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java +++ b/libjava/classpath/gnu/java/awt/peer/x/XFontPeer2.java @@ -42,17 +42,21 @@ import java.awt.FontMetrics; import java.awt.font.FontRenderContext; import java.awt.font.GlyphVector; import java.awt.font.LineMetrics; +import java.awt.font.TextAttribute; import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import java.awt.geom.Rectangle2D; import java.io.File; import java.io.FileInputStream; +import java.io.IOException; +import java.io.InputStream; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; import java.text.CharacterIterator; import java.text.StringCharacterIterator; import java.util.Locale; import java.util.Map; +import java.util.Properties; import gnu.java.awt.font.FontDelegate; import gnu.java.awt.font.FontFactory; @@ -62,11 +66,30 @@ public class XFontPeer2 extends ClasspathFontPeer { + /** + * The font mapping as specified in the file fonts.properties. + */ + private static Properties fontProperties; + static + { + fontProperties = new Properties(); + InputStream in = XFontPeer2.class.getResourceAsStream("fonts.properties"); + try + { + fontProperties.load(in); + } + catch (IOException e) + { + e.printStackTrace(); + } + } + private class XLineMetrics extends LineMetrics { private Font font; + private GlyphVector glyphVector; // private CharacterIterator characterIterator; // private int begin; // private int limit; @@ -79,6 +102,8 @@ public class XFontPeer2 // begin = b; // limit = l; fontRenderContext = rc; + glyphVector = fontDelegate.createGlyphVector(font, fontRenderContext, + ci); } public float getAscent() @@ -86,7 +111,7 @@ public class XFontPeer2 return fontDelegate.getAscent(font.getSize(), fontRenderContext.getTransform(), fontRenderContext.isAntiAliased(), fontRenderContext.usesFractionalMetrics(), true); - } + } public int getBaselineIndex() { @@ -102,21 +127,18 @@ public class XFontPeer2 public float getDescent() { - return (int) fontDelegate.getDescent(font.getSize(), - new AffineTransform(), false, false, - false); + return (int) fontDelegate.getDescent(font.getSize(), IDENDITY, false, + false, false); } public float getHeight() { - // FIXME: Implement this. - throw new UnsupportedOperationException("Not yet implemented"); + return (float) glyphVector.getLogicalBounds().getHeight(); } public float getLeading() { - // FIXME: Implement this. - throw new UnsupportedOperationException("Not yet implemented"); + return getHeight() - getAscent() - getDescent(); } public int getNumChars() @@ -150,6 +172,11 @@ public class XFontPeer2 private class XFontMetrics extends FontMetrics { + /** + * A cached point instance, to be used in #charWidth(). + */ + private Point2D cachedPoint = new Point2D.Double(); + XFontMetrics(Font f) { super(f); @@ -157,22 +184,20 @@ public class XFontPeer2 public int getAscent() { - return (int) fontDelegate.getAscent(getFont().getSize(), - new AffineTransform(), false, false, - false); + return (int) fontDelegate.getAscent(getFont().getSize(), IDENDITY, + false, false, false); } public int getDescent() { - return (int) fontDelegate.getDescent(getFont().getSize(), - new AffineTransform(), false, false, - false); + return (int) fontDelegate.getDescent(getFont().getSize(), IDENDITY, + false, false, false); } public int getHeight() { GlyphVector gv = fontDelegate.createGlyphVector(getFont(), - new FontRenderContext(new AffineTransform(), false, false), + new FontRenderContext(IDENDITY, false, false), new StringCharacterIterator("m")); Rectangle2D b = gv.getVisualBounds(); return (int) b.getHeight(); @@ -180,8 +205,9 @@ public class XFontPeer2 public int charWidth(char c) { - Point2D advance = new Point2D.Double(); - fontDelegate.getAdvance(c, getFont().getSize(), new AffineTransform(), + int code = fontDelegate.getGlyphIndex(c); + Point2D advance = cachedPoint; + fontDelegate.getAdvance(code, font.getSize2D(), IDENDITY, false, false, true, advance); return (int) advance.getX(); } @@ -194,13 +220,18 @@ public class XFontPeer2 public int stringWidth(String s) { GlyphVector gv = fontDelegate.createGlyphVector(getFont(), - new FontRenderContext(new AffineTransform(), false, false), + new FontRenderContext(IDENDITY, false, false), new StringCharacterIterator(s)); Rectangle2D b = gv.getVisualBounds(); return (int) b.getWidth(); } } + /** + * The indendity transform, to be used in several methods. + */ + private static final AffineTransform IDENDITY = new AffineTransform(); + private FontDelegate fontDelegate; XFontPeer2(String name, int style, int size) @@ -208,7 +239,7 @@ public class XFontPeer2 super(name, style, size); try { - File fontfile = new File("/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf"); + File fontfile = new File("/usr/share/fonts/truetype/freefont/FreeSans.ttf"); FileInputStream in = new FileInputStream(fontfile); FileChannel ch = in.getChannel(); ByteBuffer buffer = ch.map(FileChannel.MapMode.READ_ONLY, 0, @@ -239,7 +270,7 @@ public class XFontPeer2 } } - public boolean canDisplay(Font font, char c) + public boolean canDisplay(Font font, int c) { // FIXME: Implement this. throw new UnsupportedOperationException("Not yet implemented"); @@ -326,4 +357,112 @@ public class XFontPeer2 throw new UnsupportedOperationException("Not yet implemented"); } + /** + * Encodes a font name + style + size specification into a X logical font + * description (XLFD) as described here: + * + * http://www.meretrx.com/e93/docs/xlfd.html + * + * This is implemented to look up the font description in the + * fonts.properties of this package. + * + * @param name the font name + * @param atts the text attributes + * + * @return the encoded font description + */ + static String encodeFont(String name, Map atts) + { + String family = name; + if (family == null || family.equals("")) + family = (String) atts.get(TextAttribute.FAMILY); + if (family == null) + family = "SansSerif"; + + int size = 12; + Float sizeFl = (Float) atts.get(TextAttribute.SIZE); + if (sizeFl != null) + size = sizeFl.intValue(); + + int style = 0; + // Detect italic attribute. + Float posture = (Float) atts.get(TextAttribute.POSTURE); + if (posture != null && !posture.equals(TextAttribute.POSTURE_REGULAR)) + style |= Font.ITALIC; + + // Detect bold attribute. + Float weight = (Float) atts.get(TextAttribute.WEIGHT); + if (weight != null && weight.compareTo(TextAttribute.WEIGHT_REGULAR) > 0) + style |= Font.BOLD; + + return encodeFont(name, style, size); + } + + /** + * Encodes a font name + style + size specification into a X logical font + * description (XLFD) as described here: + * + * http://www.meretrx.com/e93/docs/xlfd.html + * + * This is implemented to look up the font description in the + * fonts.properties of this package. + * + * @param name the font name + * @param style the font style + * @param size the font size + * + * @return the encoded font description + */ + static String encodeFont(String name, int style, int size) + { + StringBuilder key = new StringBuilder(); + key.append(validName(name)); + key.append('.'); + switch (style) + { + case Font.BOLD: + key.append("bold"); + break; + case Font.ITALIC: + key.append("italic"); + break; + case (Font.BOLD | Font.ITALIC): + key.append("bolditalic"); + break; + case Font.PLAIN: + default: + key.append("plain"); + + } + + String protoType = fontProperties.getProperty(key.toString()); + int s = size; + return protoType.replaceFirst("%d", String.valueOf(s * 10)); + } + + /** + * Checks the specified font name for a valid font name. If the font name + * is not known, then this returns 'sansserif' as fallback. + * + * @param name the font name to check + * + * @return a valid font name + */ + static String validName(String name) + { + String retVal; + if (name.equalsIgnoreCase("sansserif") + || name.equalsIgnoreCase("serif") + || name.equalsIgnoreCase("monospaced") + || name.equalsIgnoreCase("dialog") + || name.equalsIgnoreCase("dialoginput")) + { + retVal = name.toLowerCase(); + } + else + { + retVal = "sansserif"; + } + return retVal; + } } |