A label on the left ruler is spelled one character per line, so a long one is
tall: "-0.0625" is seven characters and reaches 60.5 pt down the ruler, while a
sixteenth-inch step leaves 54 pt at zoom 12. Binary steps made such labels
reachable -- the decimal ladder's "-0.1" was four characters in an 86 pt gap --
so the ruler could draw one label over another.
A label that would start inside the one above it is left out. Every tick still
draws, as do the labels that fit, and `vertical_label_height` gives the reach
of a label so the decision is one comparison.
Zooming in on an inch ruler stepped through 0.2, 0.1 and 0.05 of an inch:
`Unit::ruler_step` picked from one decimal ladder for every unit, and the
rulers divided whatever it returned by ten. A tenth of an inch is not a mark an
inch ruler carries (#2827).
Below an inch the steps are binary fractions now, 1/2 down to 1/128, and
`Unit::ruler_minor` gives the unlabelled ticks between two labels: an eighth of
the step on an inch ruler, so every tick is a binary fraction of an inch and
they stay about as dense as the tenths elsewhere. An inch and wider keeps the
shared ladder, and the metric units, points, pixels and picas keep their
tenths. Ruler-tick snapping follows the ticks that are drawn, which moves an
inch document's Shift-drag of a guide onto the same grid.
`ruler_label` took its decimals from `(-step.log10()).ceil()`, which writes
1/16 as "0.06" and 1/8 as "0.13" -- wrong values, not just rounded ones. It
uses the fewest decimals that write the step exactly, and drops trailing zeros
as `Unit::number` does, so a sixteenth-inch ruler labels the inch `1` rather
than spelling `1.0000` down six lines of the vertical ruler.
The Stroke panel weight dropdown converted one pt-based preset list into
whatever Units > Stroke was set to, which produced ugly rounded values like
0.088 mm, 0.265 mm, 10.583 mm from the pt ladder. Each unit now has its own
native ladder (observed from Illustrator's running dropdowns and typed in),
converted to pt once at use. Points, Millimeters, Centimeters, Inches,
Pixels and Picas each get Illustrator's actual values; the exotic Unit
variants (Feet & Inches, Meters, Yards, Feet) fall back to the pt ladder.
Picas round-trip to exact pt weights (1 pt, 12 pt, 60 pt …) but display as
decimal picas until Unit::number learns 0p1 / 1p3 notation; that is a
system-wide formatter change left for a separate PR.
Also bumps Unit::number precision from 3 to 4 decimals so Illustrator's
sub-eighth-inch strokes (0.0078, 0.0156, 0.0313, 0.0625 in) show their
authored values instead of rounding to 0.008 / 0.016 / 0.031 / 0.063.
Trailing zeros are still trimmed, so 1 pt stays "1".
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
The General unit is the active document's units: Preferences > Units >
General sets them (one undo step) and is the units new documents start
in (and the unit shown with no document open); Document Setup changes
only the document. The Transform panel, Properties, the Control bar, the
Info panel, rulers, the status bar, Align spacing, Tabs, paragraph
indents, Pattern Options, dialog distances (Move, shape sizes, path
dialogs, Artboard Options, effect distances, Transform Each, parameter
dialogs), New Document and the canvas measurement labels (smart-guide
sizes, moves, the Measure tool, the Live Corners radius) all follow it,
live. Units > Type drives font size, leading and baseline shift; Units >
Stroke also reaches the Appearance panel and the Magic Wand weight
tolerance. Typed units ("5 mm", "12 pt") work in any field; all ten
units are choices; length preferences show in their unit and accept a
unit; offset/simplify/grid/type-size params read typed units. Typed text
starting with a multi-byte character no longer panics the parser.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Hamza