Three reviewers (security, correctness, performance) converged on:
- Download PDF died on the second click: Closure::once_into_js throws
when invoked twice. The handler is now a plain FnMut kept for the
overlay's lifetime.
- Rasterisation was bounded by page count, not pixels: 12 A0 sheets at
150 DPI peaked near 1.8 GB of RGBA plus ~1.7 GB of decoded images,
and a drawing declaring absurd paper sizes made the rasteriser
saturate its u16 dimensions into a ~17 GB allocation that aborts the
tab. Preview now computes a uniform DPI under a 64-Mpx total budget
(floor 24 DPI) from the page tree before allocating, with a per-page
4096-px edge clamp.
- Overlays stacked when previewing twice and their blob URLs were only
revoked via Close. The overlay is now single-instance (id-tagged);
a replacement or Close revokes every URL through a shared registry.
- emit_image resampled before probing the XObject cache, so a title
block placed on 12 layouts ran 12 Lanczos passes to embed once.
The cache is now probed with the target dimensions first.
- Preview downloads are named {stem}_preview.pdf instead of a constant
plot_preview.pdf, and the page label says 'first N of M' when the
preview is capped while the PDF keeps every page.
(cherry picked from commit 2a05479d69)
A plot preview should show the plotted result on screen instead of
producing a file. The web build now does: the plotted PDF bytes
are rasterised with the hayro pipeline already used for PDF underlays
(150 DPI, first 12 pages) and shown in an in-page overlay with
Download-PDF and Close actions.
The previous strategy opened a new tab via window.open from the async
plot task; browsers withhold popups without a live user gesture, and
embedded hosts ship no PDF viewer plugin at all — so the fallback
download fired and preview behaved like an export. Plain PNG <img>
elements need neither permission.
(cherry picked from commit 8722d84910)
Bug:
The PDF underlay renderer sized its pixmap from page size x requested DPI
with no ceiling: a large page at a high raster DPI (display or print)
computes a multi-gigabyte image - testing reached a 17 GB pixmap and a
543-second render attempt before the allocator gave up.
Reproduce:
1. Attach a large-page PDF; set a high raster DPI (print above 150 DPI,
or display with DPI raised).
2. Before: minutes of rendering and a multi-GB allocation, then abort.
3. After: display rasters are clamped so the longest side is at most
3072 (like DWF/DGN, the effective DPI is stored); print rasters over
268,435,456 pixels are refused with an error instead of rendered.
Fix:
Display (at or below 150 DPI): the scale is clamped to
RASTER_SIDE/longest before the pixmap is allocated, and the DPI actually
used is stored for downstream math. Print (above 150 DPI): refused when
width x height exceeds MAX_PRINT_RASTER_PIXELS (256 Mpx) or is
non-finite - print DPI is never silently rescaled because the
sheet-mm-from-exact-DPI conversion must stay exact; the user gets an
error instead of a hang. A regression test covers the hostile page x DPI
case (about 1 second, previously 543 seconds and 17 GB).
A DWF sheet or DGN model is drawn as world-space wires (one line wire per
colour and width, one fill wire per colour) instead of a raster rescaled
to the view, so it stays sharp while zooming instead of showing pixels
until the raster is made again. Colours go through the colour table
mapping, contrast, fade and monochrome; clip boundaries clip the wires.
The wires are drawn and plotted but neither picked nor snapped; the
underlay's own snap geometry still serves object snaps.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- V8 models are placed relative to their global origin (model header).
- A V8 model's extent is the union of its elements' stored ranges; a V7
model's text box is one text height tall.
- Files without a colour table use the standard DGN default table; colour
255 is read from the table's background entry.
- Colours from a file's colour table follow the background: near-white
colours swap with it, and over non-black backgrounds some shades drop a
step.
- DGN contrast pulls towards a pivot taken from the model's own colours,
after the fade, which is blended into the background first.
- Shared cells are read through their full 3D placement, so tilted
instances and 3D definitions are drawn in plan.
- Deleted V8 elements are skipped; lines along the model's extent stay in
the raster.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- PDFOSNAP, DWFOSNAP and DGNOSNAP are separate; UOSNAP sets them all and
reads 2 while they differ. Enable Snap switches the selected kind's.
- DWFCLIP / DGNCLIP clip their own kind with the kind's prompts and message;
CLIP routes DWF and DGN underlays there; Enter at a corner asks again.
- The right-edge underlay tools show for DWF and DGN too (import is PDF
only).
- Underlay layers: DGN levels (V8 level table, "Default" listed as "0"; V7
used levels named from the level name table), hidden through the layer
override data with the DGN placeholder string first; a plotted DWF has
none.
- V8 colour read from its colour word (by level, index, or a true colour
drawn as its nearest index); 3D V8 elements drawn in plan (lines, line
strings, ellipses and arcs by their orientation, text); a model's extent
includes its text.
- DWF 6 TrueType text (font, height, rotation from the font opcode) and DWFx
glyph runs are drawn; the default W2D colour map is the measured one.
- Contrast pulls lightness towards a per-kind pivot as measured (PDF 0.5,
DWF 0.243, DGN 0.65).
- Zoom extents includes raster images and underlays whose frames are hidden.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A page shown small was drawn from its full-size raster and thin lines broke
up into dots. Once a zoom settles on another quarter-octave step, PDF, DWF
and DGN underlays are rasterised again near their size on screen (never
above the full-size raster), frames are requested until that happens, and
the adjusted-pixel memo is kept per raster size. V7 element weights no longer
widen strokes, matching V8 models.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Unlayered raster images go with the PDF layer drawn last before them.
- Circular Bezier arcs import as arcs: bulged polyline segments with Join,
ARC entities without it; straight chains still join.
- Imported PNGs go to "PDF Images" next to the PDF; import blocks are
numbered imp31, imp32, ...
- Background darkness is its HSL lightness below one half.
- All chosen pages attach at the same insertion point.
- PDF geometry snaps as separate pieces: centre from the rim, intersections
and perpendiculars.
- Automation: snap query with an optional base point.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On Windows a plot with no printer chosen went to the PDF application's
bare "print" verb — whatever that application considered its default —
and a viewer without a "printto" verb (Edge, store readers) silently
dropped the printer the dialog had chosen. The dialog also never named the
system default, and a failed printer enumeration left only "Default" and
"PDF" with the reason written to a console nobody sees.
- The default printer is looked up by name (GetDefaultPrinterW) both for
the dialog's "System default printer (…)" entry and before every job.
- A pure route decision (plan_print_route) resolves "Default" to that
name and uses the PDF application only when it registered a "printto"
verb for .pdf (AssocQueryStringW); otherwise the job goes straight to
the spooler through the existing GDI path. The report says which:
"Sent to printer: NAME (direct print | via the PDF application)".
- list_printers reports the system's own error; the plot dialog shows it
under the printer row and the command line warns once. A desktop without
CUPS is an empty list, not an error.
- PRINTERS command: default printer, listed printers (or the error) and,
on Windows, the print route — a report to paste into an issue.
- Properties… on the Default entry opens that printer's preferences sheet.
- GDI path: the driver's dmSize is kept (its private data lives behind
it), the print raster is no longer memoised for the session, and a
spooled temporary PDF is removed.
Tests: route planning (named / blank / no default / printto or not), the
PRINTERS command; the two Windows-only GDI tests pass the resolved name.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
- IMAGEEMBED: pack raster images into OLE2FRAME entities so a .dwg is
self-contained; 'Embed Image' entry in the XREF attach menu; control/MCP
op embed_image for external tools; dxf_name for OLE2FRAME queries.
- Scene: populate_images_from_document now rebuilds OLE2FRAME and PDF
underlay models too (they used to vanish after any XREF op).
- Printing: add PRINTER_ENUM_NETWORK pass when listing printers; GDI
spooler fallback (hayro raster at 300 DPI + StretchDIBits) for hosts
whose PDF handler registers no print verb; DEVMODE orientation with a
90-degree raster rotation fallback for v4 drivers; fix the fit-scale
precedence bug that printed blank pages.
- PDF export dialogs on Windows use the async file dialog so the native
overwrite confirmation no longer deadlocks the UI thread.
- Plot dialog: persist the chosen printer (saved on selection) and the
picked plot window across sessions; page setups with no device no
longer reset the output device.
- Community fonts: detect unresolvable .shx references on open and offer
a download from the repository's fonts/ folder (contribution guide in
fonts/README.md); custom font source URL setting for intranet font
servers; downloaded fonts resolve from the per-user fonts directory.
PDF underlays only drew their clip outline / insertion cross; the page
itself never appeared. The chain now runs: the definition's file path
resolves with the raster-image fallbacks (as stored, relative to the
drawing, basename next to the drawing — attach-time relative paths go
stale), the page rasterises through the system pdftoppm (poppler) at
150 dpi — no new crate; missing tool degrades to the outline — cached
per (path, page) including negative results, and the pixels feed the
existing image pipeline as an ImageModel: 1 underlay unit = 1 PDF inch
(px/dpi × entity scale), rotated about the insertion, fade as opacity,
the clip polygon (non-inverted) as the textured region. Draw-order,
layer visibility and per-viewport freezes ride the generic image path;
in-place edits rebuild through the shared image seed.
When the page renders, the wire path draws its frame with an interior
pick surface instead of the lone cross, so selection covers the visible
page. wasm keeps the outline placeholder (no external process).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Afonsop