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Commit f31c1e98 authored by Diego Perez's avatar Diego Perez
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Avoid passing antialias when measuring scaled text 

This is a workaround for a JDK bug that crashes the VM when
measuring scaled antialsed text.
This disables antialiasing when measuring scaled text in a specific
version of the VM.

Bug: http://b.android.com/211659
Change-Id: I637ed03cf827b65c993550998ac55d42869237ad
parent c5708ef7

tools/layoutlib/bridge/src/android/graphics/BidiRenderer.java

+10 −1
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ import java.awt.Graphics2D; 
import java.awt.Toolkit;

import java.awt.font.FontRenderContext;

import java.awt.font.GlyphVector;

import java.awt.geom.AffineTransform;

import java.awt.geom.Rectangle2D;

import java.util.ArrayList;

import java.util.LinkedList;
@@ -41,6 +42,7 @@ import java.util.List; 
 */

@SuppressWarnings("deprecation")

public class BidiRenderer {

    private static String JAVA_VENDOR = System.getProperty("java.vendor");



    private static class ScriptRun {

        int start;
@@ -221,9 +223,16 @@ public class BidiRenderer { 
            frc = mGraphics.getFontRenderContext();

        } else {

            frc = Toolkit.getDefaultToolkit().getFontMetrics(font).getFontRenderContext();



            // Metrics obtained this way don't have anti-aliasing set. So,

            // we create a new FontRenderContext with anti-aliasing set.

            frc = new FontRenderContext(font.getTransform(), mPaint.isAntiAliased(), frc.usesFractionalMetrics());

            AffineTransform transform = font.getTransform();

            if (mPaint.isAntiAliased() &&

                    // Workaround for http://b.android.com/211659

                    (transform.getScaleX() <= 9.9 ||

                    !"JetBrains s.r.o".equals(JAVA_VENDOR))) {

                frc = new FontRenderContext(transform, true, frc.usesFractionalMetrics());

            }

        }

        GlyphVector gv = font.layoutGlyphVector(frc, mText, start, limit, flag);

        int ng = gv.getNumGlyphs();