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09 — Stage 2: printtarg and target layout
UI: #stage-2. Action: #btnCreateLayout → run_printtarg.
PrinttargConfig → argv (build_printtarg_args)
-v -u -i {instrument} -p {page} [-r | -R seed] [-d label] {-t|-T} {dpi} [-K|-I cal] basename
| UI | Field | Flag |
|---|---|---|
| Instrument | instrument |
-i i1|p3|CM|SS|20|22|41|51 |
| Page size | page_size |
-p A4|A4R|A3|A2|Letter|LetterR|Legal|4x6|11x17|WWWxHHH |
| Custom page | customPageW/H |
-p {w}x{h} millimetres, ≥ 50 |
| Bit depth 8/16 | bit_depth |
-t 8-bit TIFF / -T 16-bit |
| DPI | dpi |
after -t/-T, default 300 |
| Layout order | random_seed, no_randomize |
see below |
| Custom label | custom_label |
-d string (fork #19 / ICCery #119) |
| Calibration | calibration_file, calibration_embed_only |
-K file.cal apply, -I file.cal embed only |
Process id: printtarg_${basename}. Always passes fork -u so a JSON manifest can be parsed from stdout.
Randomisation (#163)
Default must be deterministic (-R 1). A missing seed produced different TIFF layouts every run, breaking re-prints.
#printtargLayoutOrder |
Flags |
|---|---|
deterministic (default) |
-R 1 |
custom_seed |
-R N (N ≥ 1) |
raster |
-r (no randomize) — not -R |
Do not confuse printtarg -r (raster/no-random) with targen's -r (full-spread algorithm).
Custom label (-d)
Assembled as:
ICCery - {basename} - {printer} - {ink} - {driverPaper} - {actualPaper} - DD/MM/YYYY HH:MM
Manual override via #targetLabelPreview. Fork printtarg -d is the label, not colour space (targen -d) and not iccgamut density (iccgamut -d).
JSON manifest
Pretty-printed bare JSON on stdout (no prefix). Frontend extractManifest scans accumulated stdout. Typical fields: pages[] with TIFF paths, patch counts, instrument. Gallery renders each page via read_tiff_preview_png — never feed TIFF bytes to <img> (#58). Max edge 1200 px, Lanczos3, PNG base64.
Colour-management warning
#cmWarningBanner tells the user to set the driver to "No Colour Adjustment" (Epson) / "Off (No Colour Adjustment)" (Canon). Native print then also forces bypass (see 11 / 12).
Raw print panel
After successful printtarg, #rawPrintPanel is shown. #cupsOptionsGroup (PPD uncorrected passthrough) is hidden on Windows (#48).