KineticJS-PixelRatio_Override.coffee

# Adjust device pixel ratio
setMaximumPixelRatio = (p_maximumRatio=1) ->
	canvas = document.createElement('canvas')
	context = canvas.getContext('2d')
	devicePixelRatio = window.devicePixelRatio || 1
	backingStoreRatio = context.webkitBackingStorePixelRatio || context.mozBackingStorePixelRatio || context.msBackingStorePixelRatio || context.oBackingStorePixelRatio || context.backingStorePixelRatio || 1
	pixelRatio = devicePixelRatio / backingStoreRatio

	for className in ["HitCanvas", "SceneCanvas", "Canvas"]
		Kinetic[className].prototype.init = ((p_method) -> (p_config={}) ->
			if p_config.pixelRatio? then pixelRatio = p_config.pixelRatio
			p_config.pixelRatio = if pixelRatio > p_maximumRatio then p_maximumRatio else pixelRatio
			p_method.call @, p_config
		) Kinetic[className].prototype.init

setMaximumPixelRatio 1

KineticJS-PixelRatio_Override.js

setMaximumPixelRatio = function(p_maximumRatio) {
  var backingStoreRatio, canvas, className, context, devicePixelRatio, pixelRatio, _i, _len, _ref, _results;

  if (p_maximumRatio == null) {
    p_maximumRatio = 1;
  }
  canvas = document.createElement('canvas');
  context = canvas.getContext('2d');
  devicePixelRatio = window.devicePixelRatio || 1;
  backingStoreRatio = context.webkitBackingStorePixelRatio || context.mozBackingStorePixelRatio || context.msBackingStorePixelRatio || context.oBackingStorePixelRatio || context.backingStorePixelRatio || 1;
  pixelRatio = devicePixelRatio / backingStoreRatio;
  _ref = ["HitCanvas", "SceneCanvas", "Canvas"];
  _results = [];
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    className = _ref[_i];
    _results.push(Kinetic[className].prototype.init = (function(p_method) {
      return function(p_config) {
        if (p_config == null) {
          p_config = {};
        }
        if (p_config.pixelRatio != null) {
          pixelRatio = p_config.pixelRatio;
        }
        p_config.pixelRatio = pixelRatio > p_maximumRatio ? p_maximumRatio : pixelRatio;
        return p_method.call(this, p_config);
      };
    })(Kinetic[className].prototype.init));
  }
  return _results;
};

setMaximumPixelRatio(1);