aleleba/pdfcraft
1
0
Fork 0
mirror of https://github.com/storytold/pdfcraft.git synced 2026-11-01 22:19:10 -06:00
Code Issues Packages Projects Releases Wiki Activity

M11: monochrome downsampling: say an indexed image's tie goes to entry 0, its palette unread

Browse Source 
The README said an indexed image's palette decides which entry is the
dark one on a tie, but dark_is_one never reads the palette: entry 0
wins whatever its colour. The README, the function's comment and the
parity note now say so (from FredApps' review).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Grzegorz Martens
2026-10-29 20:48:03 +01:00
co-authored by Claude Opus 5.5
parent ba1a741471
commit 9fca1d44f0
3 changed files with 6 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
parity/acrobat-features.toml
+1 -1
View File
@@ -7361,7 +7361,7 @@ status = "partial"
commands = ["optimize.advanced"]
tools = ["doc_optimize"]
evidence = ["crates/optimize/tests/optimize.rs::images_are_measured_where_drawn_and_downsampled", "crates/optimize/tests/optimize.rs::settings_choose_what_happens", "crates/automation/tests/it/automation.rs::optimizing_through_tools", "crates/optimize/tests/optimize.rs::a_page_picture_printed_as_one_pixel_strips_is_merged_into_one_image", "crates/optimize/tests/optimize.rs::images_that_do_not_tile_a_picture_are_left_alone", "crates/optimize/tests/optimize.rs::a_deeply_nested_form_is_measured_at_its_largest_use", "crates/optimize/tests/optimize.rs::images_are_not_resampled_when_some_uses_could_not_be_measured", "crates/optimize/tests/optimize.rs::image_resolution_uses_the_pages_physical_unit", "crates/optimize/tests/optimize.rs::optimization_retains_an_image_below_threshold_on_a_scaled_page", "crates/optimize/tests/optimize.rs::shared_forms_are_measured_in_each_pages_physical_units", "crates/optimize/tests/optimize.rs::black_and_white_images_above_450_ppi_are_averaged_down_to_300", "crates/optimize/src/images.rs::it_matches_the_slow_way", "crates/automation/tests/it/automation.rs::doc_optimize_averages_black_and_white_scans_down", "crates/ui-egui/tests/it/create.rs::the_pdf_optimizer_dialog_saves_an_optimized_copy"]
notes = "colour and grayscale, bicubic, effective resolution measured where drawn (every use, with page-local UserUnit scaling, through nested forms up to 12 deep; when a use can't be measured, nothing is resampled); image fragments stacked edge to edge are merged first (side-by-side tiles not yet); monochrome (1-bit, CCITT fax and eight-bit black-and-white grey) averaged by area to 300 ppi above 450 ppi by default, a tie to the dark sample (black in grey, painted in a mask, ink in a separation, after the decode array), then stored as Group 4 or 1-bit Flate (Monochrome Images ▸ Downsample to; doc_optimize mono); not monochrome images with a soft mask, and Acrobat's bicubic and subsampling choices for monochrome aren't offered"
notes = "colour and grayscale, bicubic, effective resolution measured where drawn (every use, with page-local UserUnit scaling, through nested forms up to 12 deep; when a use can't be measured, nothing is resampled); image fragments stacked edge to edge are merged first (side-by-side tiles not yet); monochrome (1-bit, CCITT fax and eight-bit black-and-white grey) averaged by area to 300 ppi above 450 ppi by default, a tie to the dark sample (black in grey, painted in a mask, ink in a separation, after the decode array; an indexed image's entry 0, its palette not read yet), then stored as Group 4 or 1-bit Flate (Monochrome Images ▸ Downsample to; doc_optimize mono); not monochrome images with a soft mask, and Acrobat's bicubic and subsampling choices for monochrome aren't offered"
[[feature]]
id = "optimize.recompress-images"