Each Objects on Path record measured the bounds of every object it names,
and checked its path, before it was turned down. A thousand copies of a
record whose object is a group of 20,000 paths took 5.6 s to open instead
of about 50 ms. A record now checks its group and ids first, and the path
and objects of a group are measured for one record at most.
Art taken from a `.ai`'s PDF part on a later page is moved to where the
editing data puts that artboard. The move left pattern fills and strokes
where they were, so their tiles no longer lined up with the art. This
happened in three places: the page art that stands in for an unread
object (#5050), the page's type given to text objects, and the art on
each page when the file comes in as its PDF part with the artboard
layout kept. Each move now transforms the pattern tiles too.
An object whose art style holds Drop Shadow, Inner Glow, Outer Glow,
Feather, Round Corners or Scribble now opens as itself with those
effects live, in their order. Feather is read under the name and key
the files use (`Adobe Fuzzy Mask`, `Radius`).
Each setting is read only when it is written as its kind (`/Int`,
`/Real`, a fill style for a color) with a value in range. An unknown
key or choice, a missing setting, or a Scribble with a color of its own
keeps the drawn look, where the reader used to cast, clamp or default
the value.
The legacy type helpers and tests move from the end of crates/eps/src/import/ai/tests.rs to after text_objects_are_slots_named_after_their_story, and the helper stream7 is renamed type_stream7.
Legacy type (`To` ... `TO`) now reads `min opt max TC` and `min opt max TW`
into the paragraph's letter and word spacing, `hangingQuotes Tq` into Roman
hanging punctuation, and `hyphenate limit lead tail max Th` into hyphenation
on or off, After First, Before Last and the Hyphen Limit (0 when the limit
flag is 0). Values are kept to the ranges the Justification and Hyphenation
options take, and a spacing triple out of order goes back to its default.
Operands of the legacy type attributes are read by their place: an attribute
whose operands are missing, are not numbers, or are flags other than 0 and 1
stays as it was. Before, a value that was not a number shifted the later
operands (`5 /x 7 Ti` set indents of 5, 7 and 0), and a bad `TA` or `Ta`
turned kerning on or set the alignment to left. One long `Tx` no longer goes
past the reader's limit on characters.
A clipping path painted with a stroke (`W S`, `W B`) lost the stroke when
a .ai file opened from its editing data. The clipping path now keeps it,
and it paints over the clipped art as a clipping path's stroke does in
VectorCraft. A gradient-filled clipping path stroked with `1 BB` or `2 BB`
put the stroke on the painted copy of its fill, under the clipped art; it
now goes on the clipping path too. Several clipping paths in one group
make one compound path, which keeps their stroke, opacity and blend mode
when they all have the same ones.
A version 7 text object has no arbitrary-angle character rotation: its
character attributes include baseline shift (Ts), scaling (Tz) and
tracking (Tt), Tv only turns Roman characters 90 degrees in vertical
text, and the positioning operators such as Tm are ignored on reading.
Type with Character Rotation was written as editable text with the
rotation left out, so rotated characters opened upright.
Such type is now written as its glyphs' outlines, the way type 8-bit text
can't hold already is, with the warning "type with rotated characters is
written as outlines, which keep the rotation, and is no longer editable
text". The outlines keep each character's rotation, baseline shift and
scale. Type without rotated characters, and type turned a whole number of
times, is still written as text.
Docs: docs/file-format-parity.md, docs/mcp.md, docs/target-app-parity.md.
A Separation space whose colorant is named All paints every plate, and
one named None paints nothing (ISO 32000-1:2008, 8.6.6.4). EPS export
wrote a spot swatch's name as its colorant, so a spot color named All
printed on every plate and one named None did not print.
Such an ink is now written as All Spot or None Spot, numbered All Spot 2
and on when a spot swatch already has that name, in its Separation
space, DeviceN spaces and the %%DocumentCustomColors and
%%CMYKCustomColor comments. At PostScript Level 3, a gradient that mixes
one of these inks with another spot ink or with process or gray stops is
now a DeviceN shading instead of process colors. Registration still
writes All.
Version 7 files write each palette swatch as its paint and `Pc`, with no
name. The reader only kept a swatch with a name before `Pc`, so such a
palette gave no swatches and the document got the default set.
A swatch without a name is now named by its spot color, gradient or
pattern, or by its values in the format the swatch import already uses
for unnamed colors ("Gray K=25", "C=25 M=0 Y=0 K=0"). `Pn` and a `Pc`
with no paint before it add nothing. Named swatches keep their names.
An operator the reader does not know, or a `Pg`, now ends the paint
before it, so a later `(name) Pc` no longer takes that paint. The
swatch limit is kept with a running count instead of summing every
group at each `Pc`.
An envelope in a .ai's editing data opened as its distorted art, with
its mesh and contents dropped. It now opens as a live envelope of its
contents: a warp with its style, bend, distortions and orientation, a
mesh with its points and handles, or a top object with its outline,
with Envelope Options, Fidelity and Edit Contents.
The envelope replaces its drawn art only when VectorCraft draws it like
that art, with a budget so that live envelopes don't make the file open
from its PDF part. When the layers still differ too much from the page,
the drawn art is put back. An envelope that can't be read, or that
draws differently, keeps its drawn art with a note. Envelopes of type
keep their drawn art and hidden type as before.
The editing data's layer options set a template layer from the flag four
places after the colour index. The colour index of nine-operand options,
and the colour index and dimming percentage of eleven and twelve operand
options, are read from their own places (they were read one place later).
A straight (N) * guide path directly on a layer that runs across the
whole canvas, or from edge to edge of one artboard, opens as a ruler
guide on that layer (an artboard guide of that artboard); other guide
paths stay guide paths. Guides scale with the document when its editing
data is in the units of a UserUnit page, and an EPS that keeps only its
first artboard keeps only that artboard's guides.
Fixes#779
EPS export wrote every gradient with a spot color stop in process
colors. A gradient of tints of one spot color and paper white is now
written in that ink's Separation space, at Level 2 and 3. At Level 3, a
gradient that mixes a spot color with CMYK or gray colors, or two spot
colors, is written in a DeviceN space of the process inks its stops use
and the spot inks, each spot ink with the CMYK equivalent its Separation
space has. An off-center midpoint is a stop with the inks halfway
between its two stops. Paper white is an exact white, whether or not
the stop is linked to a process swatch.
These gradients are still written in process colors, each with its own
warning: a mix with other inks at Level 2; a mix with RGB or Lab colors
in an RGB export (a CMYK export converts those stops to CMYK first); a
DeviceN space that would need more than 32 colorants or a spot ink named
Cyan, Magenta, Yellow, Black, All or None; and a Perceptual gradient.
The old warning for every spot gradient has been removed.
The header lists two or more spot colors with each %%+ line right after
the comment it continues: %%DocumentCustomColors and %%CMYKCustomColor
were interleaved, so a DSC reader took the second ink's name as part of
the first ink's %%CMYKCustomColor.
The reader cut every trailing zero byte off the Zstandard editing data
before decoding it, to drop the padding after the last frame. A frame can
end in a zero byte itself (a raw or RLE block, or a checksum whose last
byte is zero), and cutting it left the frame short, so the file failed to
open with "its Zstandard compression is damaged". The reader now decodes
frame after frame and stops when only zeros are left.
SVG export ignored an image's colorize paint and wrote the image's own
black, white and gray pixels. EPS export flattened every colorized image
into a process-color raster, so a spot color lost its plate. Both now
write the image in the fill color, with the coverage the canvas and PDF
export use (darkness times alpha), so white and transparent pixels take
no color.
- SVG writes a coverage PNG as a mask over a rectangle in the color,
shared between repeated images while each keeps its own color. Linked
mode writes the coverage PNG as a file, and SVG Tiny 1.2 writes a PNG
in the color. A colorized image whose pixels are missing, or whose
grayscale pixels can't be decoded, is left out with a warning.
- EPS writes fully covered or uncovered pixels as an imagemask in the
color's process or Separation ink (Registration on every plate), and a
grayscale image as ink samples scaled by coverage. Level 3 masks its
uncovered pixels out and Level 2 writes them white; gray midtones are
written over white, with the existing warnings.
- EPS flattening no longer counts a solid colorize paint on a grayscale
or 1-bit image as transparency by itself. Opacity, blending modes,
opacity masks, effects and overlapping transparent art still flatten
it, and so does a colorize paint the writer can't draw.
The svg crate's tests turn on resvg's raster-images feature to render
the embedded PNGs.
Docs: docs/mcp.md, docs/target-app-parity.md.
putinterval, copy of a string, roll, counttomark, clear to mark and cvn
worked on up to 4 MiB or 100,000 objects for the one operation each is charged,
so a small file looped over them could keep the importer busy for hours within
the operation budget. Each now spends one operation per 256 bytes or objects.
Fixes#3584
An envelope whose contents are being edited is written the other way
round from one that isn't: its contents, a group on `%_` lines, then
its dictionary, which holds the mesh that shapes them. Only a group of
meshes was left out before an envelope's dictionary, so those contents
were read as art and their undistorted shapes drew over the distorted
art that follows on plain lines (and that the page draws).
The group on `%_` lines before an envelope's dictionary is now left
out whatever it holds; text in it stays as hidden text, as the
dictionary's own source text does.
# Conflicts:
# docs/file-format-parity.md
Art inside a dictionary in the editing data, such as an area text's
frame (`/ConfiningPath`) or a mask's art, can set a transparency
(`Xy`). The writer goes on from it: the objects after an area text
whose frame sets one have no `Xy` of their own. The reader dropped
that state when the dictionary closed, so those objects took the
transparency before the dictionary instead; in a user's file a Lighten
glow before an area text made everything after it fade into the light
background.
The last transparency the art inside a dictionary sets is now the
current one after it (and the enclosing dictionary's). Dictionaries
outside the layers (the setup's styles) are left as they were.
# Conflicts:
# docs/file-format-parity.md
Area type made from the editing data's text document was laid out with
its first baseline the font's ascent below the frame's top. The text
document keeps where each of its lines starts, and the file's page draws
them there: for some fonts the first line sits well above the font's
ascent (Oswald's at about its cap height), so headings came in lower
than on the page and the layers were taken to differ from it.
When the file's first line is more than half a point from where it is
laid out here, the first baseline is now fixed where the file has it
(First Baseline: Fixed), measured in the text document's own frame so a
copied object's type moves with its frame.
# Conflicts:
# docs/file-format-parity.md
Type made from an Illustrator file's text document took each character
attribute its run doesn't set from the document's base attributes, not
from the character style the run names ([Normal Character Style] or
another of the file's). Where the two differ the type came in wrong: a
file whose base fill is white and whose Normal Character Style is black
came in with its text white, invisible, so the layers differed from the
page wherever the page's own type didn't stand in for it.
A run now takes its own attributes, then its character style's (and the
styles that one is based on, up to 16), then the document's.
#4757 gives a blend the Xy written after its record. When the blend is a
layer's last object, the layer's own state block (Xy, Xd, 7 () XW, LB)
went to the blend instead, and the layer stayed opaque. The blend's state
is now tentative like a mesh's (#4748): its own 6 () XW confirms it, the
layer's LB gives it to the layer and the blend keeps what it had.
Also records the .ai/EPS audit fixes under G9, the File formats row and M4.
A PDF saved with Illustrator editing data for only some of its artboards
has pages for those artboards, while the editing data keeps them all. The
layers were compared with the first page on the first artboard, so a page
showing a later artboard never matched and the file came in as its PDF
part, without its layers.
With fewer pages than artboards, the first page is now taken to be the
artboard of its size whose art draws most like it (up to 16 weighed), and
the pages' type goes to that artboard and the ones after it. All the
artboards still come in, and the comparison still decides whether the
layers are used.
A gradient mesh with an opacity mask has its own state (`Xy`) after the
mask's dictionary, not right after its `/End X!`. The operators of the
mask's art, on `%_` lines, cleared the flag that says a mesh just ended,
so the state was read as the next object's and each masked mesh in a
run drew with the blend mode of the one before it.
The flag now goes back to what it was when a dictionary opened once it
closes, as `after_object` does.
A layer's own state block (Xy, Xd, 7 () XW before LB) can have the
stroke style (J j w M d XR) between its Xy and Xd. Read as the art moving
on, it dropped the layer's opacity, so a layer at 17% drew opaque and the
file came in as its page. The stroke style now keeps the pending layer
state, and the state a mesh before it had; an object's own 6 () XW block
still isn't the layer's.
An EPS saved for Illustrator 10 keeps its type in the editing data as
legacy text objects (`To` ... `TO`), with no `/AI11Text` slot for the
page's type to go in, so a file whose page had text came in as its page.
Those text objects are now the layers' own: the page's type isn't put
anywhere, and the comparison with the page decides as before. Type the
editing data keeps only as outlines stays outlines, with a note counting
the page's text objects that are.
An Xy right after a gradient mesh's /End X! is the mesh's only when the
mesh's own 6 () XW follows. When the layer's LB follows (directly or
after the layer's Xd and 7 () XW) it is the layer's, as before, and the
mesh keeps the state it had. Also corrects the revision-history row that
still said meshes with handle weights of 0 aren't read.
Type on a path from the editing data's text document came in at the
font's advances, while the file's own layout (and its page) closes the
glyphs up round the outside of a curve and opens them up round the
inside, even where the frame keeps no spacing. Round a circle the type
ran on past where the page ends it.
The spacing (Type on a Path Options > Spacing) that reproduces the
layout is now fitted from the layout's glyph positions, advances and
turns, using the text engine's own model, and set on the imported text
object. Corners and straight runs are left out of the fit.
The corner placement of placed files was tried only when the first
placement failed the comparison with the page. A small logo in the wrong
place differs too little to fail, so it stayed there. When the corner
placement draws closer to the page and still matches it, use it.
A .ai whose layers hold placed (linked) PDFs and no text object came in as
its PDF part, saying its layers had no text objects for its page's text.
The PDF part draws each placed file, type and all, where the layers show
its preview, so type that lies inside the placed files (at either of their
placements) is theirs and needs no text object. Type outside them still
does.
An Illustrator EPS draws its crop marks after the last layer, between
%AI3_BeginCrops and %AI3_EndCrops (inside userdict /AI3_noCropMarks known
not { ... } if). The reader took them for art outside the layers, and the
whole file came in as its page in one layer. The section is now skipped,
as other non-art sections are; the crop area is %AI3_Cropmarks.
In the editing data of a .ai or EPS file, a gradient mesh's own state
(`Xy`) comes right after its `/End X!`, before its `Xd` and `XW`, as a
group's comes after its `U`. The reader took it as the next object's, so
a Multiply shadow mesh came in as Normal and painted opaque white over
the art under it, while the file's page shows the shadow.
An `Xy` read straight after a mesh ends now also applies to that mesh.
An `Xy` after the mesh's `Xd` and `XW` stays the next object's.
Some files write a handle weight of 0 on some gradient mesh corners. The
reader took only weights of 1, so the mesh and the whole file's layers
were unread. A weight of 0 draws as the same cubic edge against the files'
pages; other weights still leave the mesh unread.
Follow-ups to the review of #4697 and #4698:
- With textAs: outlines, a .ai saved without PDF compatibility, read
from its editing data alone, has its type outlined too, as an empty
page or a text-only placeholder already did.
- Threaded type read from the editing data holds its story in its first
frame: it now flows through its frames before it is outlined, so each
frame's outlines show the text it holds, and the outlined frames
leave their threads.
- Each outline group keeps its type's opacity, blend mode, isolation,
opacity mask and effects (the same carry-over the flattener uses).
- A gradient-mesh corner (/N) holding anything but numbers is unread,
instead of being read with the numbers after it shifted into its
colour and opacity.
A page cropped to the art is recognised in a UserUnit page's units too,
when the art's box is the page in those units and the artboard isn't the
page in points. Such pages are taken only when every page is the art's
box, and only the first page's type is read: the later pages are copies
whose type was moved by the first page's offset and could fill the
layers' text objects twice.
prune_unseen ran before the retry that moves placed files to their box's
corner, and that retry cloned the pruned layers: text an image covered
only at its first placement was already gone, so the file came in without
it or as its PDF part. Clone the layers before pruning and prune each
placement on its own.
Character attribute 12 of the editing data's text document is the case
(1 Small Caps, 2 All Caps). The reader skipped it, so type set in All Caps
came in as typed, in lower or mixed case where the page draws capitals.
Map it onto CharStyle::all_caps and CharStyle::small_caps.
A mesh in the editing data that the reader couldn't read made the whole
file come in as its page or PDF part, without its layers. Three cases
were rejected that files write routinely:
- A mesh starts grey, and `/CS` is written only where the colour space
changes, before the corner it applies to, even within a patch. Meshes
with no `/CS`, or one that changed between corners, were unread.
- Named colours (`[c m y k /DeviceCMYK (name) /Process]` or `/Spot`) and
`/NChannel` inks: each corner gives the tint, 1 being the full colour.
- Grids over 64 patches a side or 4,096 patches (files have 97 x 72).
Each corner now takes the colour space last set before it; named
colours paint at their tint and inks overprint at theirs; the limits
are 128 a side and 16,384 patches.
A placed (linked) file is put where its matrix takes the canvas point of
art space's origin (the centre of %AI3_TemplateBox). In many files the
matrix takes the corner of the box the file is written with instead, so
the image landed far off its artboard, the layers differed from the
page, and the file came in as its PDF part.
The reader keeps that second placement for each placed file where the
two differ. When the layers don't draw as the page, they are compared
again with those files at their box's corner, and used if that draws
as the page. Files whose layers already match keep their placement.
dotCooCoo