199186 2019-06-25 01:07:11 -0700 [WinCairo] fonts/use-typo-metrics-1.html is failing as ImageOnlyFailure 2024-06-28 15:08:08 -0700 1 1 1 Unclassified WebKit Platform WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=198909 P2 Normal --- 1 fujii webkit-unassigned fred.wang oldest_to_newest 1547645 0 fujii 2019-06-25 01:07:11 -0700 [WinCairo] fonts/use-typo-metrics-1.html is failing as ImageOnlyFailure It seems that GetOutlineTextMetrics doesn't preserve OS/2 USE_TYPO_METRICS flag for OpenType fonts. fonts/lineheight5000-typolineheight2300.woff seems a WOFF generated from a OpenType font. If I convert lineheight5000-typolineheight2300.woff to TTF, and converted back to WOFF, the test case will pass. Firefox seems using HarfBuzz to get OS/2 section on Windows. 1547676 1 fred.wang 2019-06-25 03:11:37 -0700 I wonder if the tools you use to convert to TTF and WOFF again might do extra sanitisation changes. Are you able to use the script to generate a TTF and then load directly the .ttf file with @font-face rule? 1547953 2 fujii 2019-06-25 20:05:20 -0700 I created lineheight5000-typolineheight2300.ttf. I confirmed USE_TYPO_METRICS flag is preserved, the test can pass. diff --git a/mathml/tools/use-typo-lineheight.py b/mathml/tools/use-typo-lineheight.py index 9768979f48..c98020868b 100644 --- a/mathml/tools/use-typo-lineheight.py +++ b/mathml/tools/use-typo-lineheight.py @@ -44,7 +44,7 @@ font.os2_windescent_add = False font.os2_use_typo_metrics = True -path = "../../fonts/math/lineheight%d-typolineheight%d.woff" % (winHeight, typoLineHeight) +path = "../../fonts/math/lineheight%d-typolineheight%d.ttf" % (winHeight, typoLineHeight) print("Generating %s..." % path, end="") font.generate(path) if font.validate() == 0: 2043678 3 fujii 2024-06-28 15:08:08 -0700 280480@main added the USE_TYPO_METRICS support for some fonts for Windows port. However, fonts/use-typo-metrics-1.html is still failing. This ticket keeps tracking the issue.