Fixed #21: Limit wheel zoom speed

fengyuanchen · Dec 19, 2015 · 7a28cef · 7a28cef
1 parent 4a77ca1
commit 7a28cef
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diff --git a/src/js/cropper.js b/src/js/cropper.js
@@ -11,6 +11,7 @@
     _this.disabled = false;
     _this.replaced = false;
     _this.limited = false;
+    _this.wheeled = false;
     _this.isImg = false;
     _this.originalUrl = '';
     _this.canvasData = null;

diff --git a/src/js/handlers.js b/src/js/handlers.js
@@ -57,6 +57,17 @@
 
       preventDefault(e);
 
+      // Limit wheel speed to prevent zoom too fast (#21)
+      if (_this.wheeled) {
+        return;
+      }
+
+      _this.wheeled = true;
+
+      setTimeout(function () {
+        _this.wheeled = false;
+      }, 50);
+
       if (e.deltaY) {
         delta = e.deltaY > 0 ? 1 : -1;
       } else if (e.wheelDelta) {