libtxt: move to the next run if the current run ends before the start…

… of the line block (flutter#4891) Fixes flutter#15975
DaveShuckerow · Mar 28, 2018 · ea7bb0d · ea7bb0d
1 parent 6473f1b
commit ea7bb0d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/third_party/txt/src/txt/paragraph.cc b/third_party/txt/src/txt/paragraph.cc
@@ -239,6 +239,10 @@ bool Paragraph::ComputeLineBreaks() {
       StyledRuns::Run run = runs_.GetRun(run_index);
       if (run.start >= block_end)
         break;
+      if (run.end < block_start) {
+        run_index++;
+        continue;
+      }
 
       minikin::FontStyle font;
       minikin::MinikinPaint paint;