mirror of
https://github.com/thangisme/notes.git
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325 lines
7.0 KiB
JSON
325 lines
7.0 KiB
JSON
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{
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"title":"Canvas (basic support)",
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"description":"Method of generating fast, dynamic graphics using JavaScript.",
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"spec":"https://html.spec.whatwg.org/multipage/scripting.html#the-canvas-element",
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"status":"ls",
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"links":[
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{
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"url":"https://developer.mozilla.org/en/Canvas_tutorial",
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"title":"Tutorial by Mozilla"
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},
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{
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"url":"http://glimr.rubyforge.org/cake/canvas.html",
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"title":"Animation kit"
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},
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{
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"url":"http://diveintohtml5.info/canvas.html",
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"title":"Another tutorial"
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},
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{
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"url":"http://explorercanvas.googlecode.com/",
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"title":"Implementation for Internet Explorer"
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},
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{
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"url":"https://raw.github.com/phiggins42/has.js/master/detect/graphics.js#canvas",
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"title":"has.js test"
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},
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{
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"url":"https://skilled.co/html-canvas/",
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"title":"Canvas Tutorial & Cheat Sheet"
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}
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],
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"bugs":[
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{
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"description":"The Android browser does not support clipping on HTML5 canvas. See the bug filed here: http://code.google.com/p/android/issues/detail?id=21099"
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},
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{
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"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](http://jsfiddle.net/zL8KC/)"
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},
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{
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"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."
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},
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{
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"description":"In IE 11 `canvas.toDataURL()` does not work if the canvas has images with data URI sources [see bug](https://connect.microsoft.com/IE/Feedback/Details/828416)"
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},
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{
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"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) "
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},
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{
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"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](http://jsfiddle.net/p7b0wmcu/)"
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}
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],
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"categories":[
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"Canvas",
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"HTML5"
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],
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"stats":{
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"ie":{
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"5.5":"n",
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"6":"p",
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"7":"p",
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"8":"p",
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"9":"y",
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"10":"y",
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"11":"y"
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},
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"edge":{
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"12":"y",
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"13":"y",
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"14":"y",
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"15":"y"
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},
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"firefox":{
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"2":"a #1",
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"3":"a #1",
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"3.5":"a #1",
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"3.6":"y",
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"4":"y",
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"5":"y",
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"6":"y",
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"7":"y",
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"8":"y",
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"9":"y",
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"10":"y",
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"11":"y",
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"12":"y",
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"13":"y",
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"14":"y",
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"15":"y",
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"16":"y",
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"17":"y",
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"18":"y",
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"19":"y",
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"20":"y",
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"21":"y",
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"22":"y",
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"23":"y",
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"24":"y",
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"25":"y",
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"26":"y",
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"27":"y",
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"28":"y",
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"29":"y",
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"30":"y",
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"31":"y",
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"32":"y",
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"33":"y",
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"34":"y",
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"35":"y",
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"36":"y",
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"37":"y",
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"38":"y",
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"39":"y",
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"40":"y",
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"41":"y",
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"42":"y",
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"43":"y",
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"44":"y",
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"45":"y",
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"46":"y",
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"47":"y",
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"48":"y",
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"49":"y",
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"50":"y",
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"51":"y",
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"52":"y",
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"53":"y",
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"54":"y"
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},
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"chrome":{
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"4":"y",
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"5":"y",
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"6":"y",
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"7":"y",
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"8":"y",
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"9":"y",
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"10":"y",
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"11":"y",
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"12":"y",
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"13":"y",
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"14":"y",
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"15":"y",
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"16":"y",
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"17":"y",
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"18":"y",
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"19":"y",
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"20":"y",
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"21":"y",
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"22":"y",
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"23":"y",
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"24":"y",
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"25":"y",
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"26":"y",
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"27":"y",
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"28":"y",
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"29":"y",
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"30":"y",
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"31":"y",
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"32":"y",
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"33":"y",
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"34":"y",
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"35":"y",
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"36":"y",
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"37":"y",
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"38":"y",
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"39":"y",
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"40":"y",
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"41":"y",
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"42":"y",
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"43":"y",
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"44":"y",
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"45":"y",
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"46":"y",
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"47":"y",
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"48":"y",
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"49":"y",
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"50":"y",
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"51":"y",
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"52":"y",
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"53":"y",
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"54":"y",
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"55":"y",
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"56":"y",
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"57":"y",
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"58":"y",
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"59":"y"
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},
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"safari":{
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"3.1":"a #1",
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"3.2":"a #1",
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"4":"y",
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"5":"y",
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"5.1":"y",
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"6":"y",
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"6.1":"y",
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"7":"y",
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"7.1":"y",
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"8":"y",
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"9":"y",
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"9.1":"y",
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"10":"y",
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"10.1":"y",
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"TP":"y"
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},
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"opera":{
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"9":"y",
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"9.5-9.6":"y",
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"10.0-10.1":"y",
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"10.5":"y",
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"10.6":"y",
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"11":"y",
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"11.1":"y",
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"11.5":"y",
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"11.6":"y",
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"12":"y",
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"12.1":"y",
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"15":"y",
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"16":"y",
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"17":"y",
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"18":"y",
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"19":"y",
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"20":"y",
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"21":"y",
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"22":"y",
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"23":"y",
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"24":"y",
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"25":"y",
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"26":"y",
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"27":"y",
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"28":"y",
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"29":"y",
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"30":"y",
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"31":"y",
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"32":"y",
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"33":"y",
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"34":"y",
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"35":"y",
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"36":"y",
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"37":"y",
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"38":"y",
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"39":"y",
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"40":"y",
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"41":"y",
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"42":"y",
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"43":"y",
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"44":"y",
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"45":"y"
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},
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"ios_saf":{
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"3.2":"y",
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"4.0-4.1":"y",
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"4.2-4.3":"y",
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"5.0-5.1":"y",
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"6.0-6.1":"y",
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"7.0-7.1":"y",
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"8":"y",
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"8.1-8.4":"y",
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"9.0-9.2":"y",
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"9.3":"y",
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"10.0-10.2":"y"
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},
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"op_mini":{
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"all":"a #2"
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},
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"android":{
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"2.1":"a #1",
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"2.2":"a #1",
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"2.3":"a #1",
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"3":"y",
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"4":"y",
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"4.1":"y",
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"4.2-4.3":"y",
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"4.4":"y",
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"4.4.3-4.4.4":"y",
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"53":"y"
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},
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"bb":{
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"7":"y",
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"10":"y"
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},
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"op_mob":{
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"10":"y",
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"11":"y",
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"11.1":"y",
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"11.5":"y",
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"12":"y",
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"12.1":"y",
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"37":"y"
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},
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"and_chr":{
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"56":"y"
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},
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"and_ff":{
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"51":"y"
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},
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"ie_mob":{
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"10":"y",
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"11":"y"
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},
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"and_uc":{
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"11":"y"
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},
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"samsung":{
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"4":"y"
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},
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"and_qq":{
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"1.2":"y"
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}
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},
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"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.",
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"notes_by_num":{
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"1":"Does not support `toDataURL()`",
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"2":"Opera Mini supports the canvas element, but is unable to play animations or run other more complex applications."
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},
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"usage_perc_y":94.36,
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"usage_perc_a":3.49,
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"ucprefix":false,
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"parent":"",
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"keywords":"toDataURL()",
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"ie_id":"canvas",
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"chrome_id":"5100084685438976",
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"firefox_id":"",
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"webkit_id":"",
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"shown":true
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}
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