GlyphValidator

A tool to validate glyphs in the current font against glyphs from another source.

RF4 Rewritten using the new RoboFont 4 APIs.

get default…: Open a dialog to select the source to check against the current font
reload: Reload the selected source from disk (in case it has changed).
checks: Select which glyph attributes to check and report on.
mark groups: Apply mark colors to indicate different validation groups.
validation groups: Select which validation groups to use to filter the font overview.
filter glyphs: Filter the font overview to show only glyphs in the selected validation group(s).
font window: Show/hide check results in the Font Overview’s glyph cells.
glyph window: Show/hide check results in the Glyph View.

Checks

Glyph attributes in the current font are checked against attributes of the same glyph in the default font.

Based on the results of the attribute checks, a glyph can be categorized as belonging to one of five validation groups.

= contours: Glyphs consisting only of contours (or empty), equal to the default.
≠ contours: Glyphs consisting only of contours (or empty), different from the default.
= components: Glyphs consisting only of components, equal to the default.
≠ components: Glyphs consisting only of components, different from the default.
‼ not allowed: Glyphs which are not allowed: nested contours, mixed contours and components.

If the option font window is activated, the validation results are shown in the Font Overview’s glyph cells:

labels with check results are displayed at the top left of each cell
a colored triangular patch indicating the validation group is shown at the top right (see below)

Labels with check results are shown in the Glyph View if the option glyph window is activated.

Check results are displayed as a string of colored labels. Label colors have the following meaning:

glyph attribute	label	red	green	blue
width	W	different	equal	–
left margin	L	different	equal	–
right margin	R	different	equal	–
points	P	incompatible	compatible	equal
components	C	incompatible	compatible	equal
anchors	A	incompatible	compatible	equal
unicodes	U	different	equal	–

Glyph attributes are considered compatible if the following conditions are met:

glyph attribute	label	conditions
points	P	same number of contours same number of segments same segment types same number of points (implied)
components	C	same number of components same component names same component order
anchors	A	same number of anchors same anchor names same anchor order

Glyph attributes are considered identical if the following conditions are met:

glyph attribute	label	conditions
width	W	same advance width
left margin	L	same left margin (rounded)
right margin	R	same right margin (rounded)
points	P	same point positions
components	C	same point positions (decomposed)
anchors	A	same anchor positions
unicodes	U	same unicode value(s)