* Content-Aware tools: Photoshop's behaviour, measured
Photoshop 25.4 was measured as a black box (synthetic and public-domain
images, results read back exactly) and the content-aware family follows it:
- Fill (inpaint): coarse to fine with the coarser level's matches scaled up
and voted with the finer level's own pixels, the coarsest level filled
from the hole's edge inwards, a shallower pyramid. The fill is pieces of
the image copied pixel for pixel with narrow seams, as Photoshop's;
before, it was visibly blurred. Pixels have roles (hole, context,
source, void), so excluded areas stay context instead of being filled.
- Colour adaptation: Image Melding's per-patch gain and bias, limited per
level, instead of a low-frequency membrane pull.
- Sampling window: Photoshop's square of side 4·√(max(w,50)·max(h,50))
centred on the selection, slid inside the canvas; Edit › Fill,
Rectangular, Auto, Delete and Fill and Spot Healing use it.
- Auto sampling area: what looks like the selection's surroundings (local
colour and contrast, one min cut), fitted to Photoshop's overlay.
- Patch Tool: a Content-Aware mode (Structure, Color, Sample All Layers).
- Content-Aware Move: Structure 3..7 alike, a band about a patch wide;
Color as a gain/bias limited to about 0.04 per step.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* Remove tool: keep its own sampling margin (fill_cmds::sampling_margin is gone)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
View zoom now means device pixels per document pixel, so 100% shows one image pixel per physical
display pixel on a scaled (125%, 200%) display, as in Photoshop. Fit, Actual Pixels, pan/zoom anchoring,
scrollbars, the navigator, the pixel grid and every hit tolerance go through canvas_ppp / point_zoom.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Add the Patch tool (#213)
paint.patch heals the selected area with texture from where the
selection is dragged (Source) or copies the selection onto the
dragged-to area (Destination), seamless-cloned like the Healing Brush.
The solve is clipped to the canvas, so patches at the edge stay opaque.
Tool::Patch joins the J group: outside the selection it draws a lasso
(Shift/Alt add/subtract), inside it drags the patch, the outline follows
the pointer and the offset is clamped to the canvas. Options bar:
Source / Destination. Strings translated in all six catalogs.
Tests at 8/16/32 bit, a UI gesture test, panic_hunt green. Scorecard
TOOL-213-3 is partial: the drag previews the outline, not the pixels.
retouch_bench: patch 250x250 22 ms, 1000x1000 362 ms (release).
generated with Claude Code
* Patch tool: live preview of the heal while dragging (#213)
The canvas shows the document healed at the pointer's offset
(patch_preview.rs, modelled on the Move tool's preview) and
recomposites only the healed area; release commits the exact
paint.patch and its damage rect refreshes the same area.
The preview (retouch_cmds::patch_preview) solves the colour fit on a
coarse grid (at most 128x128 cells) and interpolates it back: the
Poisson result is source + a harmonic correction, so the texture stays
exact and only the smooth correction is approximated (worst pixel 0.022
at 8x coarser in the test). Selection coverage is read tile-wise and
the interpolation runs per row in parallel.
retouch_bench (release, 6016x6016): preview 250x250 7 ms, 500x500
17 ms, 1000x1000 52 ms (exact patch: 21 / 90 / 354 ms). Scorecard
TOOL-213-3 done. Also applies rustfmt to the first commit's code.
generated with Claude Code
* Patch tool: cap patches at 16M pixels, drop product names from comments (#213)
The solve needs roughly 150 bytes per pixel, so the old 64M cap allowed
about 10 GB and risked an allocation abort instead of an error.
generated with Claude Code
* Regenerate docs/scorecard.md
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Tool::ALL holds both the Patch tool and the Mixer Brush (rebase onto #433)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
