X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dashed-canvas.js;h=0fc687450ac4b65cc778cd336b2f0eb701c76b78;hb=0a5aa490041ec62b5c7e4951d4d4e7a2fd345fc2;hp=d8ebac077c293d5fd799fed3eeabdcf5a0deba15;hpb=8458f3530c0fbcc35f5ffbea6e2a74413d1804dd;p=dygraphs.git

diff --git a/dashed-canvas.js b/dashed-canvas.js
index d8ebac0..0fc6874 100644
--- a/dashed-canvas.js
+++ b/dashed-canvas.js
@@ -4,6 +4,9 @@
  * MIT-licensed (http://opensource.org/licenses/MIT)
  */
 
+(function() {
+'use strict';
+
 /**
  * @fileoverview Adds support for dashed lines to the HTML5 canvas.
  *
@@ -40,7 +43,7 @@
  * property and "uninstallPattern" method to this particular canvas context.
  * You must call uninstallPattern() before calling installPattern() again.
  *
- * @param {pattern | Array<Number>} A description of the stroke pattern. Even
+ * @param {Array.<number>} pattern A description of the stroke pattern. Even
  * indices indicate a draw and odd indices indicate a gap (in pixels). The
  * array should have a even length as any odd lengthed array could be expressed
  * as a smaller even length array.
@@ -63,6 +66,7 @@ CanvasRenderingContext2D.prototype.installPattern = function(pattern) {
   var realMoveTo = this.moveTo;
   var realStroke = this.stroke;
 
+  /** @type {function()|undefined} */
   this.uninstallPattern = function() {
     this.beginPath = realBeginPath;
     this.lineTo = realLineTo;
@@ -115,10 +119,10 @@ CanvasRenderingContext2D.prototype.installPattern = function(pattern) {
 
         // Set last pattern index we used for this pattern.
         var patternIndex = dashedLineToHistory[0];
-        x = 0;
+        var x = 0;
         while (len > x) {
           // Get the length of the pattern segment we are dealing with.
-          segment = pattern[patternIndex];
+          var segment = pattern[patternIndex];
           // If our last draw didn't complete the pattern segment all the way
           // we will try to finish it. Otherwise we will try to do the whole
           // segment.
@@ -154,7 +158,8 @@ CanvasRenderingContext2D.prototype.installPattern = function(pattern) {
         }
 
         this.restore();
-        x1 = x2, y1 = y2;
+        x1 = x2;
+        y1 = y2;
       }
     }
     realStroke.call(this);
@@ -170,4 +175,6 @@ CanvasRenderingContext2D.prototype.installPattern = function(pattern) {
 CanvasRenderingContext2D.prototype.uninstallPattern = function() {
   // This will be replaced by a non-error version when a pattern is installed.
   throw "Must install a line pattern before uninstalling it.";
-}
+};
+
+})();