From 38718ee5e6dccee69439ddf5ae80d5373beb04bc Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Tue, 5 Apr 2016 11:08:58 +0200
Subject: [PATCH] Use ol.dom.createCanvasContext2D in ol.style.Circle

---
 src/ol/style/circlestyle.js | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/src/ol/style/circlestyle.js b/src/ol/style/circlestyle.js
index 71846f2631..a073ee8c1b 100644
--- a/src/ol/style/circlestyle.js
+++ b/src/ol/style/circlestyle.js
@@ -4,6 +4,7 @@ goog.require('goog.asserts');
 goog.require('ol');
 goog.require('ol.color');
 goog.require('ol.colorlike');
+goog.require('ol.dom');
 goog.require('ol.has');
 goog.require('ol.render.canvas');
 goog.require('ol.style.Fill');
@@ -268,18 +269,14 @@ ol.style.Circle.prototype.render_ = function(atlasManager) {
 
   if (atlasManager === undefined) {
     // no atlas manager is used, create a new canvas
-    this.canvas_ = /** @type {HTMLCanvasElement} */
-        (document.createElement('CANVAS'));
-    this.canvas_.height = size;
-    this.canvas_.width = size;
+    var context = ol.dom.createCanvasContext2D(size, size);
+    this.canvas_ = context.canvas;
 
     // canvas.width and height are rounded to the closest integer
     size = this.canvas_.width;
     imageSize = size;
 
     // draw the circle on the canvas
-    var context = /** @type {CanvasRenderingContext2D} */
-        (this.canvas_.getContext('2d'));
     this.draw_(renderOptions, context, 0, 0);
 
     this.createHitDetectionCanvas_(renderOptions);
@@ -369,15 +366,9 @@ ol.style.Circle.prototype.createHitDetectionCanvas_ = function(renderOptions) {
 
   // if no fill style is set, create an extra hit-detection image with a
   // default fill style
-  this.hitDetectionCanvas_ = /** @type {HTMLCanvasElement} */
-      (document.createElement('CANVAS'));
-  var canvas = this.hitDetectionCanvas_;
+  var context = ol.dom.createCanvasContext2D(renderOptions.size, renderOptions.size);
+  this.hitDetectionCanvas_ = context.canvas;
 
-  canvas.height = renderOptions.size;
-  canvas.width = renderOptions.size;
-
-  var context = /** @type {CanvasRenderingContext2D} */
-      (canvas.getContext('2d'));
   this.drawHitDetectionCanvas_(renderOptions, context, 0, 0);
 };