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12 changes: 12 additions & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,18 @@ follow semantic versioning; release dates are ISO 8601.

### Public API

- **A list item whose marker is a picture starts its text where the page does in DOCX.** The
picture — a dot, an icon — was followed by a space, a little over two points where the page
leaves the `markerGap` asked for: `TealPulse`'s skills, highlights and certifications, a
3.2pt dot and a 9.2pt gap, stood 6.3 to 6.7pt left of the page's in both editors, and
`OrangeOps`' 6pt in Word. A top-level item of a `hangingIndent(true)` list whose marker is
the list's and a picture alone is now followed by a tab to a stop the layout's measure past
the item's start — the picture's width and the gap — where the picture, its edges included,
clears that stop, as Word draws a picture at the size it is written; a marker of text, which
Word sets in its own widths, keeps its space. Those lines now stand within 0.1pt across.
Lines more than 2pt off across fall from 175 to 136 in Word, from 130 to 102 in LibreOffice
on Windows and from 427 to 388 on Linux. `ListBuilder.hangingIndent` and `markerGap` say what
DOCX now keeps.
- **A page of its own draws its backgrounds from the body in DOCX, so LibreOffice no longer
sets it lower.** LibreOffice gives a header a height of its own however little it holds, and
the header carrying a page's backgrounds set every line of the seven sidebar CVs
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Expand Up @@ -413,17 +413,19 @@ public ListBuilder continuationIndent(String continuationIndent) {
* no marker — contributes no row, so its children hang at the level it would
* have occupied rather than one deeper.</p>
*
* <p><b>Fixed-layout only.</b> This is geometry, and it applies to the
* backends that do their own layout — PDF and PPTX. The semantic DOCX
* <p><b>Fixed-layout, but for a drawn marker's gap.</b> This is geometry, and
* it applies to the backends that do their own layout — PDF and PPTX. The semantic DOCX
* export writes a Word paragraph per item and lets Word lay it out, so it
* keeps the marker in the item's text and is unchanged by this setting: the
* same paragraphs, the same text, the same nesting. Word positions content
* at absolute indents and has no way to be told "start the text one marker
* width plus a gap from here", so reproducing this geometry there would mean
* measuring the marker — which the semantic backend deliberately cannot do,
* since it depends on neither a font runtime nor a layout pass. A document
* exported both ways is therefore identical in content and nesting, and
* differs in how its wrapped lines line up.</p>
* keeps the marker in the item's text: the same paragraphs, the same text,
* the same nesting. Word positions content at absolute indents and has no
* way to be told "start the text one marker width plus a gap from here", and
* sets a text marker in its own widths. Only a top-level item whose marker is
* the list's and a picture alone — a dot, an icon — has its first line's text
* placed where the layout puts it, a tab to the marker's width and the gap past
* the item's start, where the picture with its edges clears that stop: Word
* draws a picture at the size it is written. A document exported
* both ways is otherwise identical, and differs in how its wrapped lines line
* up.</p>
*
* @param hangingIndent whether items use marker/content geometry
* @return this builder
Expand All @@ -444,11 +446,11 @@ public ListBuilder hangingIndent(boolean hangingIndent) {
* <p>Real geometry, never spaces. A markerless item takes no gap at all,
* rather than an unexplained inset.</p>
*
* <p><b>Fixed-layout only</b>, for the reason given on
* {@link #hangingIndent(boolean)}: the semantic DOCX export does not lay text
* out and cannot place content a measured distance after a marker, so it
* ignores this value rather than approximating it with something that would
* render as a different number than the one asked for.</p>
* <p>In the semantic DOCX export, for the reason given on
* {@link #hangingIndent(boolean)}, it places only the first line's text of a
* top-level item whose marker is a picture alone; after a marker of text it is
* a space, rather than an approximation that would render as a different
* number than the one asked for.</p>
*
* @param markerGap gap in points; {@code 0} is allowed
* @return this builder
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4 changes: 2 additions & 2 deletions docs/architecture/backend-capability-matrix.md
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Expand Up @@ -63,10 +63,10 @@ Payload records live in `core` under
| Capability (payload) | PDF (fixed) | PPTX (fixed) | DOCX (semantic) |
|---|---|---|---|
| Paragraph — pre-wrapped lines, runs, alignment (`ParagraphFragmentPayload`) | ✅ `PdfParagraphFragmentRenderHandler` | ✅ `PptxParagraphFragmentRenderHandler` (one absolute, wrap-disabled frame per measured line) | ⚠️ semantic paragraphs (`DocxSemanticBackend`) — each run keeps its own style, falling back to the paragraph's when it has none; a `linkTarget` becomes a `w:hyperlink`, with a relationship for an address or `w:anchor` for one of the document's own anchors, and a run's own link wins over the paragraph's; a paragraph seated off its baseline (`TextVerticalAlign`) has its runs raised or lowered in the line (`w:position`) by the PDF backend's own correction (`ParagraphSeating`), one shift for the paragraph where the page seats each line by its own; Word and LibreOffice stand an exact line's baseline four fifths of the way down it whatever the face, where the page sets it the face's ascent down, so a paragraph whose face puts the two half a point or more apart — Spectral's, not Lato's — has its text moved to the page's baseline in the same position, matched at its middle line (not yet a list item's or a table text cell's; a picture among it moves with it in Word and stays on its own baseline in LibreOffice); lines a container stacks over one another tighter than their face each end halfway between their letters and the next line's (Word draws an exact line's text on screen only inside the line; its PDF export does not cut it), and the last layer of a shape container on one page, where its line runs past the foot, ends at the foot or below its letters; letters two lines share are split halfway so the page does not move, and a stack that holds a picture keeps its lines' own heights; a `bulletOffset` of spaces becomes the paragraph's indent (`w:ind` left, hanging or first line, by `indentStrategy`) in the flow and in cells, not yet over the flow, in an overlay's left-and-right pair or in a header or footer; one with letters in it is not written, its wrapped lines still set after the spaces that cover it |
| List hanging indent — a marker column and a content column (`ListBuilder.hangingIndent(true)`, `markerGap(...)`) | ✅ marker and content emitted as separate `ParagraphFragmentPayload` fragments at the resolved `markerX` / `contentX` | ✅ the same fragments — the fixed-layout pipeline resolves the geometry before either backend sees it | ❌ ignored. `DocxSemanticBackend` exports a list as a real Word list — `numbering.xml`, `w:numPr` per item, the level carrying the marker — identically whether the flag is set or not; content and nesting are unaffected. Word places content at absolute indents and has no relative-advance primitive, so honouring the gap would mean measuring the marker, which the semantic backend has no font runtime to do. Measured and rejected: a reserved-column approximation renders a different gap than the one configured, and misaligns outright for a marker wider than the column. Word numbering does not honour the gap either and does not claim to — the level's marker column is a stated constant (180 twips, plus 120 per nesting level), chosen near the single space the old text form used |
| List hanging indent — a marker column and a content column (`ListBuilder.hangingIndent(true)`, `markerGap(...)`) | ✅ marker and content emitted as separate `ParagraphFragmentPayload` fragments at the resolved `markerX` / `contentX` | ✅ the same fragments — the fixed-layout pipeline resolves the geometry before either backend sees it | ⚠️ ignored, but for a drawn marker: a top-level item of a `hangingIndent(true)` list whose marker is a picture alone (a dot, an icon) has a tab to a stop where the layout starts its text, the picture's width and `markerGap` past the item's start, where the picture with its edges clears that stop, as Word draws a picture at the size it is written; its wrapped lines still start at the item's start. Otherwise `DocxSemanticBackend` exports a list as a real Word list — `numbering.xml`, `w:numPr` per item, the level carrying the marker — identically whether the flag is set or not; content and nesting are unaffected. Word places content at absolute indents and has no relative-advance primitive, so honouring the gap would mean measuring the marker, which the semantic backend has no font runtime to do. Measured and rejected: a reserved-column approximation renders a different gap than the one configured, and misaligns outright for a marker wider than the column. Word numbering does not honour the gap either and does not claim to — the level's marker column is a stated constant (180 twips, plus 120 per nesting level), chosen near the single space the old text form used |
| Inline code/badge chips (`InlineBackground` on text spans) | ✅ `PdfParagraphFragmentRenderHandler` | ✅ `PptxParagraphFragmentRenderHandler` | ⚠️ `DocxSemanticBackend` — the fill becomes the run's own `w:shd`, in a paragraph and in a list item alike, so a badge still reads as a badge. What Word has no way to say is the shape: shading covers the glyph box, so the corner radius and the padding that widens the run on the page are not in the file, and the export records both. A `w:shd` fill is opaque, so a translucent chip is flattened first against what this export wrote underneath it — the paragraph's shading, the cell's, or the page — so the chip agrees with the file it is in, which on a white page is the colour the PDF shows. It stops being translucent, and that is recorded with the rest |
| Inline images (`ParagraphImageSpan`) | ✅ `PdfParagraphFragmentRenderHandler` | ✅ `PptxParagraphFragmentRenderHandler` | ✅ `DocxSemanticBackend.writeInlinePicture` (a picture in its own run where it sits among the words, at its size, inside the run's or the paragraph's link; raised or lowered by `w:position` to where the page's alignment and `baselineOffset` put it, from the layout's measure of the paragraph's first line — in a list, the list's text on a line as tall as the item's own tallest picture; LibreOffice ignores `w:position` on a picture and stands it on the baseline, so a picture the export draws itself (icon, emoji, shape) that the page raises carries the rise as transparent rows and needs no `w:position`, while one the page lowers stands in LibreOffice higher than on the page by as much as the page lowers it — up to the text's descent for a centred icon as tall as its line; the editor clips a picture to an exact line height, so a paragraph holding a picture that leaves its text — past the ascent or the descent, in Word's placement or on the baseline — has its lines written at least the height the picture reaches, grown by the editor rather than clipped, every line of the paragraph since Word has one line height for it, and each as tall as the editor's font makes it — for 14pt text about 2.5pt taller than the page's in LibreOffice; a picture inside its text in both editors keeps the exact height; a paragraph of one line of text in a Word paragraph of its own, with room above for its pictures' reach, keeps an exact line at the page's height of it, the pictures set in it where the page puts them in Word and what their ink reaches past it taken from the gaps around it, and in LibreOffice a lowered picture there stands higher and loses what passes the line's top; its description is the text it stands for or empty) |
| Inline vector shapes (`ParagraphShapeSpan`) | ✅ `PdfParagraphFragmentRenderHandler` | ⚠️ `PptxParagraphFragmentRenderHandler` + `PptxInlineGeometry` (distinct per-corner radii render with the top-left radius — single-adjust preset) | ⚠️ `DocxSemanticBackend.writeInlinePicture` + `DocxShapePictures` (a transparent PNG drawn by the shared `InlineSvgRasters` from the outline, fill and stroke — every outline kind, each layer centred in the run's box — placed as an inline picture is; the picture takes as far as the stroked ink reaches past the outline — half the stroke on an edge, more at a sharp corner's miter — and a pixel on each side, measured side by side, and is lowered by what it takes below, so no edge is cut and a shape takes that much more room in the line; a list marker that draws a disc is its picture, followed by a space) |
| Inline vector shapes (`ParagraphShapeSpan`) | ✅ `PdfParagraphFragmentRenderHandler` | ⚠️ `PptxParagraphFragmentRenderHandler` + `PptxInlineGeometry` (distinct per-corner radii render with the top-left radius — single-adjust preset) | ⚠️ `DocxSemanticBackend.writeInlinePicture` + `DocxShapePictures` (a transparent PNG drawn by the shared `InlineSvgRasters` from the outline, fill and stroke — every outline kind, each layer centred in the run's box — placed as an inline picture is; the picture takes as far as the stroked ink reaches past the outline — half the stroke on an edge, more at a sharp corner's miter — and a pixel on each side, measured side by side, and is lowered by what it takes below, so no edge is cut and a shape takes that much more room in the line; a list marker that draws a disc is its picture, followed by a tab to where the layout starts the item's text when the picture clears that stop, else by a space) |
| Inline SVG (`ParagraphSvgSpan`) | ✅ `PdfParagraphFragmentRenderHandler` + `PdfPathPainter` | ⚠️ `PptxParagraphFragmentRenderHandler` + `PptxInlineGeometry` + `PptxInlineSvgRasterizer` (simple layers stay native; arbitrary clips, exact dash/cap/join styles, and off-viewBox art use a transparent PNG fallback — drawn by the shared `InlineSvgRasters`; gradient paints use their primary colour) | ⚠️ `DocxSemanticBackend.writeInlinePicture` (always the transparent PNG: the same layers the layout resolves, through `InlineSvgLayers`, drawn by the raster the PPTX fallback uses — `InlineSvgRasters`, four pixels a point — and placed as an inline picture is; emoji included, so an emoji is a picture rather than a character, reported `APPROXIMATED`) |
| Text an inline icon stands for — copy, search, extraction (`ParagraphSvgSpan.text`, set by `SvgIcon.withText` and on every `EmojiLibrary` emoji) | ✅ `PdfTextLayer` via `PdfRenderEnvironment.writeTextLayer`: one invisible glyph over the icon on the line's baseline, from a Type 3 font of empty glyphs whose `ToUnicode` states each text, a whole ZWJ sequence included; rendering mode 3, so nothing is painted. One font per document, a new one after 255 distinct texts; a text over 256 UTF-16 units is not written. A block icon (`addSvgIcon`, `SvgIcon.node`) writes no text. `ActualText` around the paths was measured to reach none of PDFBox, poppler, pdf.js and MuPDF — it replaces glyphs, and a drawing has none. In a right-to-left line the glyph sits between the words it was written between and states its whole text; reading such a line back, PDFBox reverses the emoji one UTF-16 unit at a time and poppler reverses the code points of a ZWJ sequence or a U+FE0F pair, while pdf.js and MuPDF keep it whole (measured; a reader-side reversal of the glyph's text) | ❌ the icon is drawn and its text is not written | ⚠️ the icon is a picture whose description (`docPr/@descr`) is its text — read by a screen reader, but not a character a reader copies or searches |
| Rectangle shape — fill, stroke, per-corner radii, side borders (`ShapeFragmentPayload`) | ✅ `PdfShapeFragmentRenderHandler` | ⚠️ `PptxShapeFragmentRenderHandler` (distinct per-corner radii render with the top-left radius on all corners — single-adjust `roundRect` preset — until custom geometry lands; uniform radii and side borders exact) | ⚠️ `DocxSemanticBackend.writeContainerChildren` — a `SectionNode` or `ContainerNode` carrying a fill, per-side borders or a uniform stroke is written as a one-cell table: the cell's shading is the fill behind everything inside, its borders are the container's at its full height, and its margins are the padding on all four sides, less half of each border, with the table half a border wider on each side, so the text and the border land where the page draws them. A panel with less space above it than its top border — such as one opening a table cell — takes what of the border neither that space nor its padding holds from the space above its first line, where that line has some, and where its row holds the page's height that height is less the borders Word draws outside it, since Word starts a cell's content below its top border or its top margin, whichever is wider (LibreOffice, where `MerchantInvoice`'s panel's content sets its height, draws it that border's width shorter). The table takes the width the layout placed the container at, plus a point of editor slack, and a `keepTogether()` panel the layout held on one page is a row that may not split. Panels, rows and tables inside it are tables in its cell; a table cell no style fills is written white, as the page draws it. One deviation: the corner radius is dropped (a cell is rectangular) with one warning per export. An unpainted container is not a table: its paragraphs are indented by every enclosing margin and padding, and its rows and tables get `w:tblInd`. A standalone `ShapeNode` that is only a fill, with no stroke, radius, gradient or transform, and no taller than Word's thickest border (12pt) — an `addDivider` — is a rule, written as a line's is; any other `ShapeNode`, standalone or laid over others, is drawn by `DocxDrawings` as a DrawingML shape anchored to the page behind the text, where the layout placed it — `rect`, or `roundRect` with the largest corner radius, in its fill and outline colours with their alpha, each side border a line along its edge; a gradient paint and a transform are not carried, and a shape with neither a fill colour nor an outline is dropped and reported. It is anchored in a body paragraph on its page (a table cell's only on a page with no other, which Word may print it clipped to, reported), stays where it is when the text is edited — except a drawing that is all a table cell holds, an icon beside its label (in a row of the flow, a layer stack or shape container that only draws, with no margins, on one page and painting nothing outside its box; in a composed cell, a layer stack of shapes with no margin or padding, the only drawing the cell holds, matched to the table's fragments inside the cell by kind and size), which is anchored in that cell's paragraph, held at its height and placed from its top and the cell's text column, so it moves with its row; a drawing holding a line stays on the page —, and is drawn in front of the text inside a filled panel unless it frames text or a picture there; reported `APPROXIMATED` |
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