Fix center of rotation with rotation_mode='anchor'

Remove ttconv backwards-compatibility code

Remove fallback code for glyph indices

This allows checking that there are no _new_ failures, without
committing the new figures to the repo until the branch is complete.

ci: Preload existing test images from text-overhaul-figures branch

Also, check some expected conditions at parse time instead of somewhere
during use of the data.

ci: Fix image preload with multiple conflicts

Add typing to AFM parser

Drop axis_artist tickdir image compat, due to text-overhaul merge.

…latform name

A TTF/OTF file can advertise its family name in multiple places in the
SFNT name table.  FreeType exposes the primary name (usually from the
Macintosh-platform Name ID 1 slot), but other entries may carry
different (equally valid) names that users reasonably expect to work:

- Name ID 1 on the other platform (e.g. Ubuntu Light stores "Ubuntu"
  in the Mac slot and "Ubuntu Light" in the Microsoft slot)
- Name ID 16 — Typographic/Preferred Family
- Name ID 21 — WWS Family

Co-authored-by: Elliott Sales de Andrade <quantum.analyst@gmail.com>

This is minimally different from the `x` measurement, but technically
more correct. We still do the measurement for fonts we don't ship, but
that may change with Unicode Math fonts in the future.

This follows from CSS' default for line height. At the moment, the
behaviour has not been changed, and still just falls back to 1.2 for
'normal'.

We follow the process from [the CSS Inline Layout
module](https://www.w3.org/TR/css-inline-3/), specifically:

1. The default ascent and descent come from the `OS/2` font table, or
   failing that, the `hhea` table, with final fallback to the
   measurement we used to do.
2. If `linespacing` (cf line height in CSS) is normal, then we do as
   before and size each line based on the maximum ascent/descent of its
   contents. Additionally, apply the line gap from the font metrics as
   half-leading around each line.
3. If `linespacing` is a float, then scale it by font size of the first
   available font, and keep it fixed for each line.

However, if we are drawing a single line, then we do not add the line
gap around the line, to keep them a similar height as before.

text: Use font metrics to determine line heights

TST: Remove redundant font tests

When outputting files using the "core 14 fonts" (e.g.,
`rcParams['pdf.use14corefonts'] = True`), text will be measured using
our internal AFM files instead of any external files.

While we don't have a full API decided for how to pass full `Text`
objects through backends, add in a small internal helper to allow the
PS/PDF backends to override font height metrics with the AFM files.

The tolerances on these were increased in various PRs, with notes to
reduce/remove them, so they were removed in matplotlib#30184, but should have been
reverted to a smaller value:

- `test_floating_axes.py::test_curvelinear4[png]` fails on macOS
- `test_grid_helper_curvelinear.py::test_axis_direction[png]` fails on
  ARM and macOS
- `test_grid_helper_curvelinear.py::test_polar_box[png]` fails on
  Windows, ARM, and macOS

These fail on macOS; there's tolerances on them already, they fail by
just a small amount, so increase them:

- `test_bbox_tight.py::test_bbox_inches_tight_suptile_legend[png]`
- `test_patheffects.py::test_collection[png]`
- `test_axes3d.py::test_scale3d_artists_log[png]`

This fails only on AppVeyor (Windows), but not Azure. There is a
tolerance there already, so just add it to the list:

- `test_mathtext.py::test_mathtext_rendering`

This is currently causing warnings at runtime in the editable install,
which breaks almost all tests.

TST: Restore some tolerances for some arch/platform-specific failures

This incorporates our patch, so we can drop it, and adds `tests` option,
which we now disable.

…names

ENH: Allow fonts to be addressed by any of their SFNT family names

BLD: Update bundled libraqm to 0.10.4

* BLD: Update bundled FreeType to 2.14.3

These releases mostly consist of security fixes.

* BLD: adjust upstream url for freetype to nongnu savanah mirror

Co-authored-by: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>

---------

Co-authored-by: Thomas A Caswell <tcaswell@gmail.com>
Co-authored-by: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>

- Port FreeType symbol visibility patch to 2.14.1
- Add test image preloading to wasm CI workflow
- Temporarily disable testing `test_complex_shaping`, which triggers
  some code path that fails somehow

This test requires a subprocess call, so should be skipped like the
others.

Unfortunately, this was missed in matplotlib#31407.

These tests had previously kept some code or settings to prevent
regenerating the test image, but since they are now going to be
regenerated from the text overhaul, we can remove those.

TST: Cleanup back-compat code in tests touched by text overhaul

Fix FreeType runtime version check

Make it clearer that switches are only over 3 possible fonttypes (1, 3,
42).  In draw_text, the logic is easier to follow if one directly
switches over rcParams['pdf.use14corefonts']; this requires putting the
url handling at the end, which doesn't matter.

)

* TST: Set tests touched by text overhaul to mpl20 style

* TST: Tweak some tests to work better in mpl20 style

Clarify fonttype switch in backend_pdf.