canvas.json 12 KB

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  1. {
  2. "title":"Canvas (basic support)",
  3. "description":"Method of generating fast, dynamic graphics using JavaScript.",
  4. "spec":"https://html.spec.whatwg.org/multipage/scripting.html#the-canvas-element",
  5. "status":"ls",
  6. "links":[
  7. {
  8. "url":"https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial",
  9. "title":"Tutorial by Mozilla"
  10. },
  11. {
  12. "url":"http://glimr.rubyforge.org/cake/canvas.html",
  13. "title":"Animation kit"
  14. },
  15. {
  16. "url":"https://diveintohtml5.info/canvas.html",
  17. "title":"Another tutorial"
  18. },
  19. {
  20. "url":"https://github.com/arv/ExplorerCanvas",
  21. "title":"Implementation for Internet Explorer"
  22. },
  23. {
  24. "url":"https://raw.github.com/phiggins42/has.js/master/detect/graphics.js#canvas",
  25. "title":"has.js test"
  26. },
  27. {
  28. "url":"https://skilled.co/html-canvas/",
  29. "title":"Canvas Tutorial & Cheat Sheet"
  30. },
  31. {
  32. "url":"https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API",
  33. "title":"MDN Web Docs - Canvas API"
  34. }
  35. ],
  36. "bugs":[
  37. {
  38. "description":"The Android browser does not support clipping on HTML5 canvas. See the bug filed here: https://issuetracker.google.com/issues/36934492"
  39. },
  40. {
  41. "description":"Older versions of iOS did not support video as a source for the canvas `drawImage()`, though it does appear to work as of iOS 8 [test case](https://jsfiddle.net/zL8KC/)"
  42. },
  43. {
  44. "description":"Limits of `toDataURL()` for iOS:\r\n- The maximum size for decoded GIF, PNG, and TIFF images is 3 megapixels for devices with less than 256 MB RAM and 5 megapixels for devices with greater or equal than 256 MB RAM.\r\n- The maximum size for a canvas element is 3 megapixels for devices with less than 256 MB RAM and 5 megapixels for devices with greater or equal than 256 MB RAM.\r\n- JavaScript execution time is limited to 10 seconds for each top-level entry point."
  45. },
  46. {
  47. "description":"In IE 11 `canvas.toDataURL()` does not work if the canvas has images with data URI sources [see bug](https://web.archive.org/web/20171004111538/https://connect.microsoft.com/IE/Feedback/Details/828416)"
  48. },
  49. {
  50. "description":"IE 10 canvas doesn't support `setLineDash` or `lineDashOffset` [see bug](https://social.msdn.microsoft.com/Forums/en-US/85007e72-90ad-4bd9-affd-9a24702219e6/canvasrenderingcontext2dsetlinedash-and-linedashoffset-missing?forum=winappswithhtml5) "
  51. },
  52. {
  53. "description":"IE and Edge does not support globalAlpha for drawImage of SVG graphics. [see bug](https://connect.microsoft.com/IE/feedback/details/1847897/globalalpha-ignored-when-drawing-svg-to-canvas) [see testcase](https://jsfiddle.net/p7b0wmcu/)"
  54. }
  55. ],
  56. "categories":[
  57. "Canvas",
  58. "HTML5"
  59. ],
  60. "stats":{
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  63. "6":"p",
  64. "7":"p",
  65. "8":"p",
  66. "9":"y",
  67. "10":"y",
  68. "11":"y"
  69. },
  70. "edge":{
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  72. "13":"y",
  73. "14":"y",
  74. "15":"y",
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  366. },
  367. "safari":{
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  611. "and_qq":{
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  616. },
  617. "kaios":{
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  619. "3.0-3.1":"y"
  620. }
  621. },
  622. "notes":"For screen readers, IE, Chrome & Firefox support the [accessible canvas element sub-DOM](http://www.paciellogroup.com/blog/2012/06/html5-canvas-accessibility-in-firefox-13/).\r\nFirefox & Chrome also support the drawfocus ring.",
  623. "notes_by_num":{
  624. "1":"Does not support `toDataURL()`",
  625. "2":"Opera Mini supports the canvas element, but is unable to play animations or run other more complex applications."
  626. },
  627. "usage_perc_y":98.14,
  628. "usage_perc_a":0.06,
  629. "ucprefix":false,
  630. "parent":"",
  631. "keywords":"canvas,toDataURL()",
  632. "chrome_id":"5100084685438976",
  633. "shown":true
  634. }