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8189809: Large performance regression in Swing text layout

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Reviewed-by: serb, pnarayanan
This commit is contained in:
Phil Race 2017-12-11 15:17:03 -08:00
parent 5f530a331b
commit a110ef1d2f
3 changed files with 37 additions and 5 deletions
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6
src/java.desktop/share/classes/java/awt/Font.java
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@ -56,6 +56,7 @@ import sun.font.CreatedFontTracker;
import sun.font.Font2D;
import sun.font.Font2DHandle;
import sun.font.FontAccess;
import sun.font.FontDesignMetrics;
import sun.font.FontManager;
import sun.font.FontManagerFactory;
import sun.font.FontUtilities;
@ -2603,9 +2604,8 @@ public class Font implements java.io.Serializable
}
if (simple) {
GlyphVector gv = new StandardGlyphVector(this, chars, beginIndex,
limit - beginIndex, frc);
return gv.getLogicalBounds();
FontDesignMetrics metrics = FontDesignMetrics.getMetrics(this, frc);
return metrics.getSimpleBounds(chars, beginIndex, limit-beginIndex);
} else {
// need char array constructor on textlayout
String str = new String(chars, beginIndex, limit - beginIndex);