layout/reftests/fonts/README@8bccb770b82d (annotated)
layout/reftests/fonts/README
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | |
| michael@0 | 2 | Notes about fonts in this directory |
| michael@0 | 3 | |
| michael@0 | 4 | Ahem.ttf - ACID3 test font |
| michael@0 | 5 | |
| michael@0 | 6 | markXXX.ttf and markXXX.otf |
| michael@0 | 7 | |
| michael@0 | 8 | These fonts are autogenerated with FontForge using the Python script mark-generate.py. |
| michael@0 | 9 | See the comments in that file for more information on how to run the script. |
| michael@0 | 10 | |
| michael@0 | 11 | The markX.ttf and markX.otf fonts contain a single glyph for the X character consisting |
| michael@0 | 12 | of three stacked boxes. The mark2X.ttf and mark2X.otf files also contain just a glyph for the |
| michael@0 | 13 | character X but the glyph is similar to the space mark character. The markXmark2Y.ttf has |
| michael@0 | 14 | two glyphs, the first glyph for X and the second glyph for Y. |
| michael@0 | 15 | |
| michael@0 | 16 | The markA.eot and markB.eot files are for EOT-related testing. The markA.eot file is just |
| michael@0 | 17 | a copy of markA.ttf while markB.eot is a valid EOT file embedding the contents of markB.ttf |
| michael@0 | 18 | with a null root string (so it can be used in IE without domain-specific restrictions). |
| michael@0 | 19 | |
| michael@0 | 20 | |
| michael@0 | 21 | PositioningTest1.ttf, PositioningTest2.ttf |
| michael@0 | 22 | |
| michael@0 | 23 | These fonts were generated with FontForge and then OpenType tables added with MS VOLT. |
| michael@0 | 24 | The glyphs are from Charis SIL (see http://scripts.sil.org/CharisSILFont), released under the |
| michael@0 | 25 | Open Font License. |
| michael@0 | 26 | |
| michael@0 | 27 | In both fonts, the lowercase 'o' glyph should appear raised when rendered. Font 1 uses a GPOS |
| michael@0 | 28 | positioning rule to achieve this, so it tests whether vertical deltas are being handled |
| michael@0 | 29 | correctly. Font 2 uses a GSUB substitution to replace the 'o' with a glyph that has already |
| michael@0 | 30 | been offset within the em-square, so no vertical delta is involved. |
| michael@0 | 31 | |
| michael@0 | 32 | Finally, the capital 'O' character maps directly to the shifted 'o' glyph, so this can be |
| michael@0 | 33 | used for comparison without requiring any OpenType layout support. |
