image-rendering.js 2.9 KB

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  1. 'use strict';
  2. function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }
  3. function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  4. function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
  5. function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }
  6. var Declaration = require('../declaration');
  7. var ImageRendering = function (_Declaration) {
  8. _inherits(ImageRendering, _Declaration);
  9. function ImageRendering() {
  10. _classCallCheck(this, ImageRendering);
  11. return _possibleConstructorReturn(this, _Declaration.apply(this, arguments));
  12. }
  13. /**
  14. * Add hack only for crisp-edges
  15. */
  16. ImageRendering.prototype.check = function check(decl) {
  17. return decl.value === 'pixelated';
  18. };
  19. /**
  20. * Change property name for IE
  21. */
  22. ImageRendering.prototype.prefixed = function prefixed(prop, prefix) {
  23. if (prefix === '-ms-') {
  24. return '-ms-interpolation-mode';
  25. } else {
  26. return _Declaration.prototype.prefixed.call(this, prop, prefix);
  27. }
  28. };
  29. /**
  30. * Change property and value for IE
  31. */
  32. ImageRendering.prototype.set = function set(decl, prefix) {
  33. if (prefix !== '-ms-') return _Declaration.prototype.set.call(this, decl, prefix);
  34. decl.prop = '-ms-interpolation-mode';
  35. decl.value = 'nearest-neighbor';
  36. return decl;
  37. };
  38. /**
  39. * Return property name by spec
  40. */
  41. ImageRendering.prototype.normalize = function normalize() {
  42. return 'image-rendering';
  43. };
  44. /**
  45. * Warn on old value
  46. */
  47. ImageRendering.prototype.process = function process(node, result) {
  48. return _Declaration.prototype.process.call(this, node, result);
  49. };
  50. return ImageRendering;
  51. }(Declaration);
  52. Object.defineProperty(ImageRendering, 'names', {
  53. enumerable: true,
  54. writable: true,
  55. value: ['image-rendering', 'interpolation-mode']
  56. });
  57. module.exports = ImageRendering;