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gramps a5b9952cbd Web source: crop to the WIDGET rect (visible-element union excluding full-viewport wrappers) — kills the ghost-boundary dead space

- scrollWidth/scrollHeight returns the whole 1920x1080 canvas for widgets whose body/background
  spans it, so the crop kept massive transparent margins and the content floated in the Fill box.
- ContentBoundsScript now unions every visible element's getBoundingClientRect, excluding elements
  that span >=98% of the viewport (bodies, full-canvas background layers); full-bleed widgets fall
  back to the full rect. Crop taken AT the rect's top-left (l,t) — content pins to bitmap (0,0).
- Web Image explicitly Margin=0 + Left/Top alignment so the frame and widget coincide at the origin.
- Canvas-size render untouched.

2026-08-28 11:45:31 -07:00

3.6 KiB

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MyMistakes.md

One task at a time. Updated before every commit touching that task: current iteration + why the last one failed. On task complete, committed AND pushed → truncate to this stub. A new task does NOT seed this file until its first failure.

Task (active — committed `582d1f4`, NOT pushed, awaiting creator verification)

Stream widget bounding box: hug the widget on all four sides, pinned to canvas (0,0).

Iterations that failed

e917c41 — fixed 1920×1080 viewport + Stretch="Uniform" + startup registration. Failed: Uniform letterboxed the 16:9 canvas into arbitrary‑sized boxes → asymmetric dead padding read as a "gap". Lesson: Fill the box with the cropped frame, never Uniform.
9d4103c — per‑document CSS reset (html/body width/height 100%) + (0,0) anchor. Failed ("enlarged the gap"): forcing dimensions overrode the widget's own layout and expanded the dead space. Lesson: inject only overflow:hidden + transparent background — never set sizes.
8d793af — viewport == element‑box size + Stretch="Fill". Failed (janky / truncating / scrollbars): hosting at the box size clips full‑bleed widgets to their upper‑left chunk, and tracking the box reflows the page on drag. Lesson: render at a fixed canvas size, never track the box.
f39ebd9 — crop capture to scrollWidth/scrollHeight bounds + (0,0) + Fill. Partially passed (panel fixes 1a/1b/4 confirmed) but the box stayed loose; the apparent "tight right/bottom" was just the small‑viewport clip edge. ROOT CAUSE: the crop never ran. The script returned JSON.stringify(...) (a string); ExecuteScriptAsync JSON‑encodes every result, so the JSON was double‑encoded → JsonDocument.Parse got a string node → GetProperty threw → try/catch swallowed → bounds unset → no crop. Lesson: return a real JS object, never a stringified one. Also: scroll extents ≠ widget rect (they include page margins).
70fe2b8 — fixed canvas‑size viewport (1920×1080) + crop + Fill. Image render/resize became solid (creator confirmed) but the box still gapped right/bottom and wasn't 0,0. Same silent JSON bug — the crop still never executed — and the measure was scroll extents regardless. Lesson: verify declared mechanics actually execute; assume nothing ran.

Current iteration (web bounding box — UNCOMMITTED, verification pending)

Render stays the confirmed-solid 1920×1080 canvas-size viewport + Stretch="Fill" (UNTOUCHED). Crop now uses the WIDGET rect, not scroll extents: union of every visible element's getBoundingClientRect, EXCLUDING elements spanning ≥98% of the viewport (bodies, full-canvas background layers — they are wrappers, not content). Crop is taken AT the rect's top-left (l,t) so content pins to bitmap (0,0). Web Image explicitly Margin="0" + HorizontalAlignment="Left"/VerticalAlignment="Top".

Iteration that just failed (`b862a0f` — reverted to f39ebd9's scrollWidth/Height crop)

Creator still saw a massive "ghost" frame around the visible widget. Root cause: for widgets whose body/background spans the full 1920×1080 canvas, scrollWidth/scrollHeight returns the WHOLE viewport → the crop keeps massive transparent margins → dead space inside the bitmap → content floats inside the Fill-stretched box. So the earlier "nailed right/bottom" (f39ebd9) was only right for box-sized viewports: at the canvas size, scroll extents == viewport for full-canvas wrappers. Lesson: never trust scrollWidth/scrollHeight at canvas-size render; measure visible content and exclude full-viewport wrappers/backgrounds.

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