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224 lines
7.9 KiB
Markdown
224 lines
7.9 KiB
Markdown
# Word Pictures
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This demo consists of several files that work together:
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- **pictures.sh** — CLI script that synthesizes two sample PNGs (a square logo, a wide banner) and drives `officecli` to build the document.
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- **pictures.py** — Python SDK twin of `pictures.sh`; produces an equivalent `pictures.docx`.
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- **pictures.docx** — The generated document (inline, cropped, alt-text, watermark, wrapped, positioned, and clickable pictures).
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- **pictures-logo.png / pictures-banner.png** — The generated sample images, embedded into the document.
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- **pictures.md** — This file. Maps each section to the picture features it demonstrates.
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## Regenerate
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```bash
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cd examples/word
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pip install Pillow # required for sample image generation
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bash pictures.sh
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# → pictures.docx (+ pictures-logo.png, pictures-banner.png)
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```
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## How docx pictures are addressed
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A picture in Word is a **run inside a paragraph**. So you `add --type picture`
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to a *paragraph* path (`/body/p[N]` or `/body/p[@paraId=X]`), and the picture's
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own path is that paragraph plus a run index (`/body/p[@paraId=X]/r[N]`).
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- **Inline** (default) — the picture sits in the text flow like a large glyph.
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- **Floating** — pass `--prop anchor=true` to unlock `wrap`, `behindText`,
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`hAlign` / `vAlign`, `hPosition` / `vPosition`, `hRelative` / `vRelative`.
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## Sections
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### 1 — Inline Picture
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An inline picture flows with the paragraph text; only `width` / `height` (always
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unit-qualified) apply.
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```bash
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officecli add pictures.docx /body --type paragraph --prop text="1. Inline Picture" --prop style=Heading1
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officecli add pictures.docx /body --type paragraph --prop text="An inline picture flows with the paragraph text ..."
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officecli add pictures.docx /body --type paragraph --prop text=""
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officecli add pictures.docx '/body/p[3]' --type picture \
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--prop src=pictures-logo.png \
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--prop width=3cm --prop height=3cm
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```
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**Features:** `--type picture`, `src` (file path / URL / data-URI), `width` / `height` (unit-qualified — always pass cm/in/pt; a bare number is raw EMU)
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---
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### 2 — Cropped Picture
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`crop=L,T,R,B` trims each edge by a percentage of the source image.
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```bash
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officecli add pictures.docx '/body/p[6]' --type picture \
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--prop src=pictures-banner.png \
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--prop crop=10,5,15,8 \
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--prop width=10cm --prop height=2.5cm
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```
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**Features:** `crop` (1 value = symmetric, or 4 values `L,T,R,B` = per-edge percent); per-edge `cropLeft` / `cropTop` / `cropRight` / `cropBottom` accepted on add/set. `Get` folds all sides into the canonical 4-value `crop` key.
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---
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### 3 — Alt Text (Accessibility)
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`alt=` writes the DocProperties description that screen readers announce.
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```bash
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officecli add pictures.docx '/body/p[9]' --type picture \
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--prop src=pictures-logo.png \
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--prop width=3cm --prop height=3cm \
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--prop alt="Company logo: a blue circle enclosing a yellow triangle"
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```
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**Features:** `alt` (alternative text; aliases `altText`, `description`). When omitted, no description is written (an auto-filled filename is worse than none for screen readers).
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---
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### 4 — Behind-Text Watermark
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A floating picture with `wrap=none` + `behindText=true` sits behind the text
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like a watermark, centered on the page margins.
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```bash
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officecli add pictures.docx '/body/p[11]' --type picture \
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--prop src=pictures-banner.png \
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--prop anchor=true --prop wrap=none --prop behindText=true \
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--prop hAlign=center --prop vAlign=center \
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--prop hRelative=margin --prop vRelative=margin \
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--prop width=12cm --prop height=3cm \
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--prop alt="Decorative watermark banner"
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```
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**Features:** `anchor=true` (floating), `wrap=none` + `behindText=true` (behind-text z-order), `hAlign` / `vAlign` (relative alignment keyword), `hRelative` / `vRelative` (reference frame)
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---
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### 5 — Square Text Wrap
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With `wrap=square`, surrounding text flows around the picture's bounding box.
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Here the picture is right-aligned to the margin so the paragraph wraps down its
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left side.
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```bash
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officecli add pictures.docx '/body/p[13]' --type picture \
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--prop src=pictures-logo.png \
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--prop anchor=true --prop wrap=square \
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--prop hAlign=right --prop hRelative=margin --prop vRelative=paragraph \
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--prop width=3.5cm --prop height=3.5cm \
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--prop alt="Logo floated right with square wrap"
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```
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**Features:** `wrap` (`none`, `square`, `tight`, `topandbottom`, `through`), `hAlign=right` relative to the `margin` frame
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---
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### 6 — Absolute Position (hPosition / vPosition)
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Instead of relative alignment, pin a floating picture to an absolute offset from
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its reference frame. `wrap=tight` makes text hug the boundary.
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```bash
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officecli add pictures.docx '/body/p[15]' --type picture \
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--prop src=pictures-logo.png \
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--prop anchor=true --prop wrap=tight \
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--prop hPosition=2cm --prop vPosition=1cm \
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--prop hRelative=margin --prop vRelative=paragraph \
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--prop width=3cm --prop height=3cm \
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--prop alt="Logo at absolute 2cm,1cm offset with tight wrap"
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```
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**Features:** `hPosition` / `vPosition` (absolute offset — always unit-qualified; a bare number is raw EMU), `wrap=tight`
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---
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### 7 — Clickable Picture (link)
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`link=` wraps the picture in a click hyperlink.
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```bash
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officecli add pictures.docx '/body/p[18]' --type picture \
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--prop src=pictures-banner.png \
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--prop width=10cm --prop height=2.5cm \
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--prop link="https://example.com" \
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--prop alt="Banner linking to example.com"
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```
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**Features:** `link` (absolute URL → external relationship; `#anchor` or bookmark name → internal jump)
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---
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### 8 — Decorative Picture (accessibility)
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`decorative=true` marks the image as decorative: screen readers skip it entirely
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(no alt text is announced). Stored as an `adec:decorative` extension under the
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picture's `<wp:docPr>`.
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```bash
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officecli add pictures.docx '/body/p[21]' --type picture \
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--prop src=pictures-banner.png \
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--prop width=10cm --prop height=2.5cm \
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--prop decorative=true
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```
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`get` reports `decorative=true` (only when the flag is set). `decorative` also
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works via `set`. Use it for purely ornamental images that carry no information.
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**Features:** `decorative` (accessibility — screen readers skip the image)
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---
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## Complete Feature Coverage
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| Feature | Section |
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|---------|---------|
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| **inline picture:** default text-flow placement | 1 |
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| **width / height:** unit-qualified sizing | 1–7 |
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| **src=:** file path (also URL / data-URI) | 1–7 |
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| **crop=L,T,R,B:** per-edge crop percent | 2 |
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| **cropLeft / cropTop / cropRight / cropBottom:** named per-edge (add/set) | 2 |
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| **alt=:** accessibility description | 3 |
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| **anchor=true:** floating picture | 4–6 |
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| **wrap=none + behindText:** behind-text watermark | 4 |
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| **hAlign / vAlign:** relative alignment keyword | 4, 5 |
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| **hRelative / vRelative:** reference frame | 4–6 |
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| **wrap=square:** text flows around bounding box | 5 |
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| **wrap=tight:** text hugs boundary | 6 |
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| **hPosition / vPosition:** absolute offset | 6 |
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| **link=:** clickable image hyperlink | 7 |
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| **decorative=true:** mark decorative (screen readers skip) | 8 |
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## Inspect the Generated File
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```bash
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# List every picture with its stable run path and key props
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officecli query pictures.docx picture
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# Inline picture (section 1) — width/height/wrap=inline
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officecli get pictures.docx '/body/p[3]/r[2]'
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# Cropped banner (section 2) — crop=10,5,15,8
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officecli get pictures.docx '/body/p[6]/r[2]'
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# Alt text (section 3)
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officecli get pictures.docx '/body/p[9]/r[2]'
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# Behind-text watermark (section 4) — anchor/behindText/hAlign/vAlign
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officecli get pictures.docx '/body/p[11]/r[2]'
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# Square wrap, right-aligned (section 5)
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officecli get pictures.docx '/body/p[13]/r[2]'
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# Absolute position + tight wrap (section 6) — hPosition/vPosition
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officecli get pictures.docx '/body/p[15]/r[2]'
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# Clickable banner (section 7) — link=
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officecli get pictures.docx '/body/p[18]/r[2]'
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```
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> **Note on paths:** the `/body/p[N]/r[2]` positional paths above assume a
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> freshly generated file. `officecli query pictures.docx picture` prints the
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> authoritative `@paraId` paths, which are stable across edits.
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