fix custom brush mouse bug

1 files changed, 4 insertions, 0 deletions

diff --git a/js/ui/brush.js b/js/ui/brush.js
index ae1e36e..d9f35ce 100644
--- a/js/ui/brush.js
+++ b/js/ui/brush.js
@@ -12,6 +12,7 @@ var brush = (function(){
 
     var last_point = [0,0]
     var dragging = false
+    var erasing = false
 
     brush.forEach(function(lex, x, y){
 
@@ -52,6 +53,9 @@ var brush = (function(){
         lex.focus()
       })
     })
+    window.addEventListener('mouseup', function(e){
+      dragging = erasing = false
+    })
   }
 
   brush.expand = function(i){