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avoid changing characters' advances when special character is added to the line or ligatures are enabled

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problem report - https://youtrack.jetbrains.com/issue/JRE-118#comment=27-1816577

port commit 32288ee6 from JBR 9

(cherry picked from commit fc2b95ea8e)
This commit is contained in:
Dmitry Batrak
2018-12-24 16:01:29 +03:00
committed by alexey.ushakov@jetbrains.com
parent b21bd30a99
commit 510c614bd5
1 changed files with 8 additions and 0 deletions
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8
src/java.desktop/share/classes/sun/font/SunLayoutEngine.java
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@@ -36,6 +36,8 @@ import sun.java2d.DisposerRecord;
import java.awt.geom.Point2D;
import java.lang.ref.SoftReference;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.ConcurrentHashMap;
import java.util.WeakHashMap;
@@ -105,8 +107,12 @@ import java.util.WeakHashMap;
* suffice.
* */
public final class SunLayoutEngine implements LayoutEngine, LayoutEngineFactory {
private static final boolean useCtFace;
static {
FontManagerNativeLibrary.load();
useCtFace = AccessController.doPrivileged((PrivilegedAction<Boolean>) () ->
Boolean.getBoolean("sun.font.use.ct.face"));
}
private LayoutEngineKey key;
@@ -156,6 +162,8 @@ public final class SunLayoutEngine implements LayoutEngine, LayoutEngineFactory
new WeakHashMap<>();
private static boolean isAAT(Font2D font) {
if (!useCtFace) return false;
Boolean aatObj;
synchronized (aatInfo) {
aatObj = aatInfo.get(font);