[web] Use DOM to render paragraphs with letter spacing #45651
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie or stuartmorgan on the #hackers channel in Chat (don't just cc them here, they won't see it! Use Discord!). If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix? Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. |
yjbanov
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Sep 12, 2023
Yeah, I was expecting to see Gold changes, but there's none. So I'm adding a new golden test to cover the issue that this PR is fixing. Test coming soon.. |
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…134695) flutter/engine@cd90cc8...4160eba 2023-09-13 skia-flutter-autoroll@skia.org Roll Skia from b38989859b81 to a30fbf83f2e9 (3 revisions) (flutter/engine#45796) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump quiver from 3.0.0 to 3.2.1 in /lib/web_ui (flutter/engine#45792) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump http from 0.13.5 to 1.1.0 in /lib/web_ui (flutter/engine#45791) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump archive from 3.1.2 to 3.3.9 in /lib/web_ui (flutter/engine#45795) 2023-09-13 mdebbar@google.com [web] Use DOM to render paragraphs with letter spacing (flutter/engine#45651) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC bdero@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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…lutter#134695) flutter/engine@cd90cc8...4160eba 2023-09-13 skia-flutter-autoroll@skia.org Roll Skia from b38989859b81 to a30fbf83f2e9 (3 revisions) (flutter/engine#45796) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump quiver from 3.0.0 to 3.2.1 in /lib/web_ui (flutter/engine#45792) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump http from 0.13.5 to 1.1.0 in /lib/web_ui (flutter/engine#45791) 2023-09-13 49699333+dependabot[bot]@users.noreply.github.com Bump archive from 3.1.2 to 3.3.9 in /lib/web_ui (flutter/engine#45795) 2023-09-13 mdebbar@google.com [web] Use DOM to render paragraphs with letter spacing (flutter/engine#45651) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC bdero@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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<**_Only applies to the HTML renderer_**> When a paragraph has letter spacing that's greater than 0, we attempt to render each character individually on the canvas, while adding extra gaps between the characters (because the browser's canvas API doesn't support letter spacing). This works well-ish in English but causes issues with international text. It also makes text rendering very slow. With this PR, the idea is to force all paragraphs with letter spacing to be rendered to a DOM element. Fixes flutter/flutter#51234 Fixes flutter/flutter#71220
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<Only applies to the HTML renderer>
When a paragraph has letter spacing that's greater than 0, we attempt to render each character individually on the canvas, while adding extra gaps between the characters (because the browser's canvas API doesn't support letter spacing).
This works well-ish in English but causes issues with international text. It also makes text rendering very slow.
With this PR, the idea is to force all paragraphs with letter spacing to be rendered to a DOM element.
Fixes flutter/flutter#51234
Fixes flutter/flutter#71220