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feat(display): double-sided mode — mirror one screen across the panel chain (#375)

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* feat(display): add double-sided mode to mirror one screen across the panel chain

Renders a plugin once at a logical (per-screen) size, then tiles the
rendered frame across the full physical chain so two (or more) panels show
identical content. A 128x32 chain configured with 2 copies drives two 64x32
screens; vertical axis splits parallel outputs instead of the chain.

Plugins size themselves from matrix.width/height, so a thin _LogicalMatrix
proxy reports the logical size while delegating every real operation
(CreateFrameCanvas, SwapOnVSync, brightness, Clear) to the physical matrix —
no plugin changes required. Duplication is a single PIL paste per copy in
update_display(), so render cost is unchanged.

Config: display.double_sided { enabled, copies, axis }. Invalid config
(non-divisible dimension, bad axis/copies) logs a warning and falls back to
single-screen rather than failing to light up.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* feat(web): expose double-sided display config in the settings UI

Adds a Double-Sided Display section to the Display settings page (enabled
checkbox, copies, horizontal/vertical axis) and wires the save handler to
persist it under display.double_sided. Validates copies (2-8) and axis,
returning 400 on bad input; an omitted checkbox is saved as disabled.
Like the other hardware fields, changes take effect after a display restart.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* refactor(display): add type hints and docstrings to double-sided proxy

Addresses CodeRabbit nits: sort _LogicalMatrix.__slots__ (Ruff RUF023),
annotate the proxy's __init__/properties/dunders and _resolve_double_sided's
return type, and add docstrings to the property/dunder methods.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Ron Pierce
2026-06-25 12:24:53 -07:00
committed by GitHub
parent d297dd6217
commit fefc2d44a2
6 changed files with 390 additions and 12 deletions
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27
web_interface/blueprints/api_v3.py
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@@ -773,6 +773,33 @@ def save_main_config():
current_config['display']['dynamic_duration'] = {}
current_config['display']['dynamic_duration']['max_duration_seconds'] = int(data['max_dynamic_duration_seconds'])
# Handle double-sided display settings
double_sided_fields = ['double_sided_enabled', 'double_sided_copies', 'double_sided_axis']
if any(k in data for k in double_sided_fields):
if 'display' not in current_config:
current_config['display'] = {}
if 'double_sided' not in current_config['display']:
current_config['display']['double_sided'] = {}
ds_config = current_config['display']['double_sided']
# Enabled checkbox: omitted from the form when unchecked.
ds_config['enabled'] = _coerce_to_bool(data.get('double_sided_enabled'))
if 'double_sided_copies' in data and data['double_sided_copies'] not in ('', None):
try:
copies = int(data['double_sided_copies'])
except (ValueError, TypeError):
return jsonify({'status': 'error', 'message': "Double-sided copies must be an integer"}), 400
if not (2 <= copies <= 8):
return jsonify({'status': 'error', 'message': "Double-sided copies must be between 2 and 8"}), 400
ds_config['copies'] = copies
if 'double_sided_axis' in data:
axis = data['double_sided_axis']
if axis not in ('horizontal', 'vertical'):
return jsonify({'status': 'error', 'message': "Double-sided axis must be 'horizontal' or 'vertical'"}), 400
ds_config['axis'] = axis
# Handle Vegas scroll mode settings
vegas_fields = ['vegas_scroll_enabled', 'vegas_scroll_speed', 'vegas_separator_width',
'vegas_target_fps', 'vegas_buffer_ahead', 'vegas_plugin_order', 'vegas_excluded_plugins']