don't compute outside of visible range

Bug: 140632678
Test: manually done
Test: TreeHugger
Change-Id: I646851973b3816bf9ba32dfe26748c0345a5a081

1 files changed, 3 insertions, 0 deletions

diff --git a/core/java/android/text/TextLine.java b/core/java/android/text/TextLine.java
index 86651060a394..5a2d8f4329dc 100644
--- a/core/java/android/text/TextLine.java
+++ b/core/java/android/text/TextLine.java
@@ -276,6 +276,7 @@ public class TextLine {
         final int runCount = mDirections.getRunCount();
         for (int runIndex = 0; runIndex < runCount; runIndex++) {
             final int runStart = mDirections.getRunStart(runIndex);
+            if (runStart >= mLen) break;
             final int runLimit = Math.min(runStart + mDirections.getRunLength(runIndex), mLen);
             final boolean runIsRtl = mDirections.isRunRtl(runIndex);
 
@@ -360,6 +361,7 @@ public class TextLine {
         float h = 0;
         for (int runIndex = 0; runIndex < mDirections.getRunCount(); runIndex++) {
             final int runStart = mDirections.getRunStart(runIndex);
+            if (runStart >= mLen) break;
             final int runLimit = Math.min(runStart + mDirections.getRunLength(runIndex), mLen);
             final boolean runIsRtl = mDirections.isRunRtl(runIndex);
 
@@ -417,6 +419,7 @@ public class TextLine {
         float h = 0;
         for (int runIndex = 0; runIndex < mDirections.getRunCount(); runIndex++) {
             final int runStart = mDirections.getRunStart(runIndex);
+            if (runStart > mLen) break;
             final int runLimit = Math.min(runStart + mDirections.getRunLength(runIndex), mLen);
             final boolean runIsRtl = mDirections.isRunRtl(runIndex);