歴史

[1] HTML5 Revision Tracker (2010-08-03 07:21:00 +09:00 版) http://html5.org/tools/web-apps-tracker?from=5226&to=5227

[2] Web Applications 1.0 r8132 Allow UAs to use algorithms other than nearest-neighbour when scaling images down. ( (2013-08-07 05:30:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8131&to=8132

[3] HTML Canvas 2D Context ( (2013-08-07 02:46:06 +09:00 版)) http://www.w3.org/TR/2013/CR-2dcontext-20130806/

[4] [whatwg] canvas 2d's ellipse ( (2013-08-21 01:11:59 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-August/040524.html

[5] [whatwg] Path API feedback ( (2013-08-21 03:13:57 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-August/040523.html

[6] [whatwg] 2D canvas feature proposal: text decoration ( (2013-08-21 03:13:57 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-August/040521.html

[7] [whatwg] Questions regarding Path object ( (2013-08-21 03:13:57 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-August/040511.html

[8] [whatwg] Blurry lines in 2D Canvas ( (2013-09-05 23:33:46 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040707.html

[9] HTML Canvas 2D Context Extensions ( (2011-12-16 12:39:56 +09:00 版)) http://dev.w3.org/html5/canvas-extensions/

[10] [whatwg] High-density canvases ( (2013-09-10 00:07:53 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040735.html

[11] [whatwg] Stroking algorithm in Canvas 2d ( (2013-09-09 19:56:11 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040733.html

[12] [whatwg] remove resetClip from the Canvas 2D spec ( (2013-09-12 01:08:12 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040788.html

[13] IRC logs: freenode / #whatwg / 20130910 ( (2013-09-14 10:13:52 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20130910#l-89

[14] IRC logs: freenode / #whatwg / 20130914 ( (2013-09-16 19:41:31 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20130914

[15] [whatwg] canvas 2d's ellipse ( (2013-09-17 18:16:43 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040853.html

[16] [whatwg] Canvas - Should setLineDash be a nullable sequence? ( (2013-09-17 17:30:40 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040851.html

[17] [whatwg] 2D canvas feature proposal: text decoration ( (2013-09-27 22:35:37 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040908.html

[18] [whatwg] canvas 2d's ellipse ( (2013-09-27 22:35:37 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040857.html

[19] [whatwg] Stroking algorithm in Canvas 2d ( (2013-09-27 22:35:36 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040917.html

[20] [whatwg] Adding 2D Canvas features ( (2013-09-27 22:07:44 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040911.html

[21] [whatwg] High-density canvases ( (2013-09-27 22:35:36 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040914.html

[22] [whatwg] Outline style to use for drawSystemFocusRing ( (2013-10-01 00:42:44 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-September/040932.html

[23] Web Applications 1.0 r8225 Change how tracing a path works so that it's more similar to SVG, PDF, etc. ( (2013-10-16 08:17:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8224&to=8225

[24] Web Applications 1.0 r8227 Clarify rules for drawing focus rings ( (2013-10-17 07:43:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8226&to=8227

[25] Web Applications 1.0 r8227 Clarify rules for drawing focus rings ( (2013-10-17 07:43:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8226&to=8227

[26] [whatwg] Drawing shapes on canvas and feedback thereon ( (2013-11-25 23:55:40 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2013-November/041659.html

[27] Web Applications 1.0 r8397 Add a couple of ImageData() constructors, and (in order to make that feasible) drop all the HD stuff on <canvas>. ( (2014-01-16 07:06:00 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8396&to=8397

[28] [whatwg] <canvas> feedback ( (2014-04-29 23:36:07 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2014-April/254125.html

[29] [whatwg] <canvas> feedback ( (2014-04-29 23:36:07 +09:00 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2014-April/254179.html

[30] HTML Standard Tracker ( (2014-05-16 03:17:47 +09:00 版)) http://html5.org/tools/web-apps-tracker?from=8628&to=8629

[31] HTML Canvas 2D Context ( (2014-05-20 22:49:46 +09:00 版)) http://www.w3.org/TR/2014/WD-2dcontext-20140520/

[32] corbanbrook/webgl-2d ( (2014-08-08 16:14:18 +09:00 版)) https://github.com/corbanbrook/webgl-2d

[33] HTML Canvas 2D Context ( (2014-08-21 14:38:42 +09:00 版)) http://www.w3.org/TR/2014/CR-2dcontext-20140821/

[34] HTML Canvas 2D Context, Level 2 ( (2014-08-27 01:01:13 +09:00 版)) http://www.w3.org/TR/2014/WD-2dcontext2-20140828/

[35] Web Applications 1.0 r8783 Fix IDL blocks due to my misunderstanding what 'optional' meant ( (2014-09-18 07:43:00 +09:00 版)) https://html5.org/r/8783

[36] Web Applications 1.0 r8813 Remove a note about a possible canvas change, since it hasn't happened for a few years now. ( (2014-09-25 05:03:00 +09:00 版)) https://html5.org/r/8813

[37] Bug 8794 – <canvas>: lineWidth = 'hairline' ( (2014-09-28 09:04:16 +09:00 版)) https://www.w3.org/Bugs/Public/show_bug.cgi?id=8794

[38] Bug 11739 – <canvas>: clearPath() that clears pixels the way clearRect() does, but using a path ( (2014-09-28 09:05:42 +09:00 版)) https://www.w3.org/Bugs/Public/show_bug.cgi?id=11739

[39] HTML Canvas 2D Context ( (2015-05-15 00:43:14 +09:00 版)) http://www.w3.org/TR/2015/WD-2dcontext-20150514/

[40] HTML Canvas 2D Context ( (2015-07-01 03:24:13 +09:00 版)) http://www.w3.org/TR/2015/CR-2dcontext-20150702/

[41] HTML Canvas 2D Context (2015-09-24 12:46:31 +09:00 版) http://www.w3.org/TR/2015/PR-2dcontext-20150924/

[42] HTML Canvas 2D Context ( (2015-11-19 07:12:11 +09:00 版)) http://www.w3.org/TR/2015/REC-2dcontext-20151119/

[43] [whatwg] Splitting CanvasRenderingContext2D (Ian Kilpatrick 著, 2015-12-01 08:40:13 +09:00 版) https://lists.w3.org/Archives/Public/public-whatwg-archive/2015Nov/0020.html

[44] [css-paint-api] Initial overview of what is in PaintRenderingContext2D. · w3c/css-houdini-drafts@08a4cf8 (2016-01-07 11:57:31 +09:00 版) https://github.com/w3c/css-houdini-drafts/commit/08a4cf853c27012222b7d28a8d639e08ca37a0e2

[46] Use enum for lineCap/lineJoin/textAlign/textBaseline/direction · whatwg/html@a4b9eef (2016-02-14 00:55:45 +09:00 版) https://github.com/whatwg/html/commit/a4b9eef6ff40c394cf6ec9247ce6286795348f3f

[47] Remove CanvasProxy along with related concepts and complexities · whatwg/html@740634d (2016-03-08 18:40:26 +09:00 版) https://github.com/whatwg/html/commit/740634d0f30a3b76e9da166ac2fa8835fcc073ab

[48] Here's the list of all the 2D Context API specs I could find at the W3C as of March 4th 2014 (2014-04-12 07:37:43 +09:00 版) http://damowmow.com/temp/canvas-specs

[49] Editorial: synchronize with the DOM Standard · whatwg/html@21c6ec7 (2016-03-20 18:14:36 +09:00 版) https://github.com/whatwg/html/commit/21c6ec77594eb89b836d4872222f5916910967fd

[50] 21835 – <canvas>: Path object should have a way to add paths keeping only the union given a fill rule (2016-04-22 17:56:16 +09:00 版) https://www.w3.org/Bugs/Public/show_bug.cgi?id=21835

[51] 18751 – <canvas>: a way to get the coordinate of the last point in a path (2016-04-22 17:57:07 +09:00 版) https://www.w3.org/Bugs/Public/show_bug.cgi?id=18751

[52] 22703 – <canvas>: Masks (2016-04-22 17:57:41 +09:00 版) https://www.w3.org/Bugs/Public/show_bug.cgi?id=22703

[53] Fix "text preparation algorithm" to account for NaN ( (xidachen著, 2016-06-22 09:24:03 +09:00)) https://github.com/whatwg/html/commit/c8afae01320a3b7161273105193b61cb2b9caf3c

[54] Revert behavior change of 2D context "currentColor" keyword (junov著, 2016-07-07 05:05:39 +09:00) https://github.com/whatwg/html/commit/c836c70ccff790f82b8a22f3f1897b3bcdcbd870

[55] Remove unnecessary and unimplemented canvas tainting when painting text (domenic著, 2016-07-15 02:21:54 +09:00) https://github.com/whatwg/html/commit/6c76b617d2b45326afea2625d174ce2fd5ab6423

[56] Disallow defining a custom element using HTMLElement or its subclasses (domenic著, 2016-06-16 17:09:53 +09:00) https://github.com/whatwg/html/commit/69847259ecd9b3166b88e24ab2d5f6dd8bd59aec

[57] Fix incorrect reference to the 2D rendering context alpha flag (junov著, 2016-09-29 07:09:53 +09:00) https://github.com/whatwg/html/commit/f9ac1ceb2b67d71f08579e10ebcaeb6725be2d12

[58] Inline the infinite/NaN argument handling in 2d canvas methods (zcorpan著, 2016-09-30 22:38:34 +09:00) https://github.com/whatwg/html/commit/6f2c0e884e3a7974637514b04e62f7352b6e405d

[59] Work in progress on Web Platform re-charter; Service Workers WG charter (Advance Notice) (Wendy Seltzer著, 2017-05-13 04:44:55 +09:00) https://lists.w3.org/Archives/Public/public-new-work/2017May/0006.html

[60] 22704 – <canvas>: Layers (2017-07-23 13:18:27 +09:00) https://www.w3.org/Bugs/Public/show_bug.cgi?id=22704

[61] 27993 – <canvas>: influence of computed style or bidi text direction on CanvasRenderingContext2D text rendering (2017-07-23 14:18:55 +09:00) https://www.w3.org/Bugs/Public/show_bug.cgi?id=27993

[62] 23516 – <canvas>: controlling whether text is anti-aliased (2017-07-27 15:24:10 +09:00) https://www.w3.org/Bugs/Public/show_bug.cgi?id=23516

[63] Fix variable typos in canvas "trace a path" algorithm (earnubs著, 2017-12-15 06:27:00 +09:00) https://github.com/whatwg/html/commit/4c84beec20b840ca3d956515008f94d4ab1924af

[64] "The miter length is the distance from the point..." · Issue #3121 · whatwg/html (2017-12-15 17:09:30 +09:00) https://github.com/whatwg/html/issues/3121

[65] fix typos on style var in Canvas trace a path algo by earnubs · Pull Request #3288 · whatwg/html (2017-12-15 17:09:54 +09:00) https://github.com/whatwg/html/pull/3288

[66] Use Web IDL's new-ish interface mixins concept (romandev著, 2017-12-21 05:39:18 +09:00) https://github.com/whatwg/html/commit/c8867a179c21134021dc3435e98c1b9c4542d794

[67] Editorial: define arc() and ellipse() in terms of shared steps (annevk著, 2018-01-13 02:32:01 +09:00) https://github.com/whatwg/html/commit/af11308332a82f8bc548b3d52f701973575f205f

[68] Editorial: remove more obsolete canvas worker text (annevk著, 2018-01-22 23:28:08 +09:00) https://github.com/whatwg/html/commit/471e869889d2fc2153b9483f388c7282fac29530

[69] Editorial: remove more obsolete canvas worker text by annevk · Pull Request #3381 · whatwg/html (2018-01-24 12:44:30 +09:00) https://github.com/whatwg/html/pull/3381

[70] Improve creation of 2D and ImageBitmap rendering contexts (annevk著, 2018-01-22 23:56:16 +09:00) https://github.com/whatwg/html/commit/ad4ddd802e91da38f194a7d7df04157f739eb46b

[71] Improve creation of 2D and ImageBitmap rendering contexts by annevk · Pull Request #3382 · whatwg/html (2018-01-24 12:45:11 +09:00) https://github.com/whatwg/html/pull/3382

[72] Editorial: use "identity matrix" consistently (TimvdLippe著, 2018-03-14 13:20:39 +09:00) https://github.com/whatwg/html/commit/6f9e3c05f30eaaa4da3a63bd7d7d990e3bb22c9d

[73] Replace "identity transform" with "identity matrix" · Issue #3426 · whatwg/html (2018-03-15 17:31:26 +09:00) https://github.com/whatwg/html/issues/3426

[74] Fix usage of "identity transform" to use "identity matrix" instead by TimvdLippe · Pull Request #3555 · whatwg/html (2018-03-15 17:31:35 +09:00) https://github.com/whatwg/html/pull/3555

[75] Memorandum of Understanding Between W3C and WHATWG (2019-05-28 17:23:37 +09:00) https://www.w3.org/2019/04/WHATWG-W3C-MOU.html

[76] Add getContextAttributes() to CanvasRenderingContext2D (yellowdoge著, 2019-01-05 09:01:40 +09:00) https://github.com/whatwg/html/commit/206873adc7d6862545b56097db874d175e81d15a

[77] Add an optional desynchronized mode to 2D canvas (yellowdoge著, 2019-03-21 02:11:54 +09:00) https://github.com/whatwg/html/commit/cf529a3291dc8a9b823048c12ed9020915a432b9

[78] Add lowLatency flag to CanvasRenderingContext2DSettings. by kenrussell · Pull Request #4234 · whatwg/html (2019-07-24 20:34:55 +09:00) https://github.com/whatwg/html/pull/4234

[79] Add a low latency mode for 2D/3D Canvas contexts · Issue #4087 · whatwg/html (2019-07-24 20:36:53 +09:00) https://github.com/whatwg/html/issues/4087

[80] Add lowLatency flag to CanvasRenderingContext2DSettings by yellowdoge · Pull Request #4360 · whatwg/html (2019-07-24 20:37:38 +09:00) https://github.com/whatwg/html/pull/4360

[81] Explain multiplied-out coordinates for canvas transforms (domenic著, 2019-05-14 23:28:36 +09:00) https://github.com/whatwg/html/commit/3d150e83eb1ba4a95ab839b16cc29d7fffe60c97

[82] 28333 – Show on example how a,b,c,d,e,f affect the point position (2019-04-02 13:48:11 +09:00) https://www.w3.org/Bugs/Public/show_bug.cgi?id=28333

[83] Add multiplied-out coordinates for canvas transforms by domenic · Pull Request #4473 · whatwg/html (2019-12-06 16:55:32 +09:00) https://github.com/whatwg/html/pull/4473

[84] fserb/canvas2D: Update Canvas 2D API (2020-04-03 11:52:23 +09:00) https://github.com/fserb/canvas2D

[85] 大量の canvas を順に作成 → beginPath() → パスの構築 → closePath() → fill() で描画したとき、 Windows の Chrome で表示すると、描画内容が部分的に崩れたり、他の canvas の内容が混ざって表示されたりすることがあります。 fill() を2回呼ぶと正常に描画されます。前後に別個の描画を行うことだけでは解消されませんが、単純に beginPath から fill までの全体を2回繰り返すのでも解消するので、事情は少し複雑そうです。それ以外の挙動は正常で軽快なので、メモリー不足ということでもなさそうです。症状からみて Chrome の描画エンジンの何らかの不具合のように思われます。 2026-01-13T11:50:41.400Z

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歴史