mirror of
https://github.com/Matysh/houseplan-card
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83 lines
4.1 KiB
Markdown
83 lines
4.1 KiB
Markdown
# PDF export
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House Plan can save the current space as a one-page A4 architectural PDF.
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For administrators, the printer button appears in the card header between
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**General settings** and **Help & feedback**. The export is always a flat plan,
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even when the card currently uses the isometric view.
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The PDF always contains the physical architecture: walls, partitions, columns,
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zero-thickness walls and door, window, gate and passage openings. Device
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markers, Home Assistant states, Glow, sunlight, vacuum trails, room colours and
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Zigbee topology are intentionally excluded.
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The dialog can additionally include:
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- room dimensions and clean floor areas;
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- room names;
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- furniture and other Background-editor decor;
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- the current space backdrop, when one is configured.
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The selected options are remembered in this browser. The export reads the
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current plan but never changes it.
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The dialog is designed to remain usable down to a 320 CSS px-wide View area.
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It does not require horizontal scrolling; on narrow screens its actions stack
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vertically while retaining touch-sized controls.
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## Sheet and measurement rules
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The output is a single A4 sheet. House Plan builds the complete print scene
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first — architecture, enabled dimensions and callouts, names, decor and
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backdrop — and then chooses portrait or landscape and the smallest standard
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scale that fits all of it. The complete scene is centred on the usable sheet,
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so optional content is not pushed into a fixed reserve or left outside the
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centred area. The footer shows the scale, a 1 m or 5 ft scale bar, a vector
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compass when north is configured, the date and the House Plan version. There
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is no architectural symbol legend.
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For unusually large plans, House Plan continues the scale series in steps of
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50 until the complete scene fits. If a fixed annotation itself cannot fit on
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one A4 sheet, export stops with an error instead of producing a clipped file.
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Physical walls, partitions and columns use a `#7f7f7f` base with a consistent
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45-degree hatch. Openings remain clean cut-outs through both the base and the
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hatch. Zero-thickness walls keep the existing dashed print convention and are
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not hatched.
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Areas use the same clean-floor geometry as the room information card. Internal
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dimensions follow the inner wall faces; external dimensions follow the outer
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physical outline. Only horizontal and vertical measurements are printed;
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genuinely diagonal edges are omitted rather than projected into misleading
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dimensions. Within one room contour or one connected outer ring, equivalent
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opposite measurements are shown once on the side with more free space. Equal
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lengths in different rooms, disconnected rings or unrelated walls are never
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deduplicated globally. Labels are centred on their measured wall and arranged
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in consistent lanes clear of the wall body. Units follow Home Assistant. Very
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short internal edges use a tick instead of unreadable text, while required
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values that cannot fit beside an edge use numbered callouts.
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For a rectangular step in an exterior facade, the chain retains enough
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horizontal and vertical values to reconstruct the outline: both neighbouring
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facade sections, the step height and one copy of its depth. An extension line
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may leave the physical corner to which it belongs, including a short
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collinear/solid prefix, but it is rejected if it touches architecture again
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after reaching free space. This narrow source-corner rule prevents both lost
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step dimensions and dimension lines drawn through another wall.
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## Images, fonts and limits
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Backdrop and decor images are embedded locally in the browser. They are not
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sent to a conversion service. Embedded image data is limited to 25 MB; an
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unavailable image or exceeded limit stops the export and leaves the dialog open
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so the options can be changed.
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Text uses an embedded subset of Roboto Regular covering the four House Plan
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interface languages. The bundled font is distributed under the Apache License
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2.0; its license is stored in `assets/fonts/LICENSE`.
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The resulting file is named
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`houseplan-<space-name>-<YYYY-MM-DD>.pdf`. Browser and Home Assistant mobile-app
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download handling determines its final Downloads location.
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