Merge pull request #901 from dnschnur/canvas-float-fix

Removed unnecessary canvas skipPositioning flag.

NEWS.md

@@ -155,6 +155,9 @@ The base and overlay canvas are now using the CSS classes "flot-base" and
 
  - Prevented several local variables from becoming global. (patch by aaa707)
 
+ - Ensure that the overlay and primary canvases remain aligned. (issue #670,
+   pull request #901)
+
 ## Flot 0.7 ##
 
 ### API changes ###

jquery.flot.js

@@ -738,15 +738,13 @@ Licensed under the MIT license.
             return devicePixelRatio / backingStoreRatio;
         }
 
-        function makeCanvas(skipPositioning, cls) {
+        function makeCanvas(cls) {
 
             var c = document.createElement('canvas');
             c.className = cls;
 
-            if (!skipPositioning)
-                $(c).css({ position: 'absolute', left: 0, top: 0 });
-
-            $(c).appendTo(placeholder);
+            $(c).css({ position: 'absolute', left: 0, top: 0 })
+            	.appendTo(placeholder);
 
 			// If HTML5 Canvas isn't available, fall back to Excanvas
 
@@ -842,8 +840,8 @@ Licensed under the MIT license.
 
                 getCanvasDimensions();
 
-                canvas = makeCanvas(true, "flot-base");
-                overlay = makeCanvas(false, "flot-overlay"); // overlay canvas for interactive features
+                canvas = makeCanvas("flot-base");
+                overlay = makeCanvas("flot-overlay"); // overlay canvas for interactive features
 
                 reused = false;
             }