Files
Templated-PPT-Master/runtime/ppt-master/scripts/svg_to_pptx/animation_config.py
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1609 lines
56 KiB
Python

"""Motion sidecar loading, SVG target scanning, and validation."""
from __future__ import annotations
import json
import math
import re
from dataclasses import dataclass
from pathlib import Path, PureWindowsPath
from typing import Any
from xml.etree import ElementTree as ET
from pptx_animations import (
ANIMATIONS,
ANIMATION_AFTER_EFFECTS,
ANIMATION_MODES,
ANIMATION_RESTARTS,
ANIMATION_TIMING_OPTION_FIELDS,
ANIMATION_TRIGGERS,
animation_effect_supports_bounce_end,
animation_seconds_to_milliseconds,
normalize_animation_effect,
normalize_animation_effect_options,
normalize_animation_effect_request,
normalize_animation_trigger,
)
from pptx_transitions import (
normalize_transition_effect,
normalize_transition_effect_request,
validate_seconds,
)
from slide_roster import discover_slide_svgs
from .drawingml.utils import SVG_NS
from .pptx_package.narration import AUDIO_CONTENT_TYPES
from .semantic_markers import is_static_page_frame
_NON_VISUAL_TAGS = frozenset(('defs', 'title', 'desc', 'metadata', 'style'))
_INHERITANCE_SENSITIVE_ANIMATION_FIELDS = frozenset({
'effect',
'effect_options',
'repeat_count',
'repeat_duration',
'accelerate',
'decelerate',
'bounce_end',
})
_GROUP_EFFECT_FIELDS = frozenset({
'effect',
'effect_options',
'duration',
'delay',
'order',
'trigger',
'trigger_shape',
*ANIMATION_TIMING_OPTION_FIELDS,
'after_effect',
'sound',
})
_CHROME_ID_TOKENS = frozenset({
'background', 'bg',
'decoration', 'decorations', 'decor',
'header', 'footer',
'chrome', 'watermark',
'pagenumber', 'pagenum', 'slidenumber', 'slidenum',
'logo', 'nav', 'rule',
})
@dataclass(frozen=True)
class GroupTarget:
"""Top-level SVG group available for PowerPoint animation anchoring."""
slide: str
group_id: str
order: int
chrome: bool = False
structurally_static: bool = False
@dataclass(frozen=True)
class MorphPair:
"""One explicit PowerPoint Morph identity across adjacent slides."""
source_slide: str
destination_slide: str
key: str
source_group_id: str
destination_group_id: str
@property
def shape_name(self) -> str:
"""Return the Selection Pane name PowerPoint uses for forced matching."""
return f'!!{self.key}'
def _tag_name(elem: ET.Element) -> str:
return elem.tag.replace(f'{{{SVG_NS}}}', '')
def is_chrome_id(elem_id: str | None) -> bool:
"""Return whether a group id represents static slide chrome."""
if not elem_id:
return False
lower = elem_id.lower()
compact = lower.replace('-', '').replace('_', '')
if compact in _CHROME_ID_TOKENS:
return True
tokens = re.split(r'[-_]', lower)
return any(t in _CHROME_ID_TOKENS for t in tokens if t)
def usable_animation_group_id(raw: str | None) -> str | None:
"""Return one nonblank SVG animation anchor verbatim, else ``None``."""
return raw if raw and raw.strip() else None
def scan_svg_targets(svg_path: Path) -> tuple[list[GroupTarget], list[str]]:
"""Scan one SVG for top-level visible group ids and anonymous groups."""
root = ET.parse(str(svg_path)).getroot()
targets: list[GroupTarget] = []
anonymous_groups: list[str] = []
visual_index = 0
for child in root:
tag = _tag_name(child)
if tag in _NON_VISUAL_TAGS:
continue
visual_index += 1
if tag != 'g':
continue
group_id = usable_animation_group_id(child.get('id'))
if group_id is None:
anonymous_groups.append(f'{svg_path.stem}: top-level group #{visual_index}')
continue
role = child.get('data-pptx-role')
placeholder = child.get('data-pptx-placeholder')
has_explicit_semantics = role is not None or placeholder is not None
has_structural_layer = child.get('data-pptx-layer') is not None
semantic_static = (
has_explicit_semantics
and is_static_page_frame(role, placeholder)
)
structurally_static = has_structural_layer or semantic_static
if has_structural_layer:
chrome = True
elif has_explicit_semantics:
chrome = semantic_static
else:
chrome = is_chrome_id(group_id)
targets.append(
GroupTarget(
slide=svg_path.stem,
group_id=group_id,
order=visual_index,
chrome=chrome,
structurally_static=structurally_static,
)
)
return targets, anonymous_groups
def _duplicate_target_ids(targets: list[GroupTarget]) -> tuple[str, ...]:
"""Return duplicate top-level animation anchors in deterministic order."""
counts: dict[str, int] = {}
for target in targets:
counts[target.group_id] = counts.get(target.group_id, 0) + 1
return tuple(sorted(group_id for group_id, count in counts.items() if count > 1))
def _duplicate_target_error(slide_name: str, duplicates: tuple[str, ...]) -> str:
rendered = ', '.join(repr(group_id) for group_id in duplicates)
return (
f'SVG slide "{slide_name}" has duplicate top-level group id(s): '
f'{rendered}; animation target ids must be unique'
)
def _require_unique_target_ids(
slide_name: str,
targets: list[GroupTarget],
) -> None:
duplicates = _duplicate_target_ids(targets)
if duplicates:
raise ValueError(_duplicate_target_error(slide_name, duplicates))
def scan_project_targets(
project_path: Path,
*,
svg_files: list[Path] | None = None,
) -> tuple[dict[str, list[GroupTarget]], list[str]]:
"""Scan selected SVG files, defaulting to ``svg_output/*.svg``."""
targets_by_slide: dict[str, list[GroupTarget]] = {}
anonymous_groups: list[str] = []
if svg_files is None:
svg_dir = project_path / 'svg_output'
if not svg_dir.is_dir():
return targets_by_slide, [f'svg_output directory not found: {svg_dir}']
svg_files = discover_slide_svgs(svg_dir)
for svg_path in svg_files:
targets, anonymous = scan_svg_targets(svg_path)
targets_by_slide[svg_path.stem] = targets
anonymous_groups.extend(anonymous)
return targets_by_slide, anonymous_groups
def default_config_path(project_path: Path) -> Path:
return project_path / 'animations.json'
def load_animation_config(project_path: Path, config_path: str | None = None) -> dict[str, Any] | None:
"""Load animation config; only an absent default sidecar is optional."""
if config_path is not None:
if not config_path.strip():
raise ValueError('Animation config path must be non-empty')
path = Path(config_path)
else:
path = default_config_path(project_path)
if config_path is not None and not path.is_absolute():
path = project_path / path
if not path.exists():
if config_path is not None:
raise FileNotFoundError(f'Animation config does not exist: {path}')
return None
with open(path, 'r', encoding='utf-8') as f:
data = json.load(f)
if not isinstance(data, dict):
raise ValueError(f'Animation config must be a JSON object: {path}')
if data.get('version', 1) != 1:
raise ValueError(f'Unsupported animation config version: {data.get("version")}')
return data
def _valid_transition_effect(effect: str) -> bool:
try:
normalize_transition_effect(effect)
except ValueError:
return False
return True
def _animation_effect_error(effect: object, label: str) -> str | None:
if not isinstance(effect, str):
return f'animations.json {label} animation effect must be a string'
try:
normalize_animation_effect(effect)
except ValueError:
valid = ', '.join((*ANIMATIONS, *ANIMATION_MODES, 'none'))
return (
f'animations.json {label} has unknown animation effect: {effect}; '
f'valid effects: {valid}'
)
return None
def resolve_slide_animation_config(
default_animation: dict[str, Any],
slide_animation: dict[str, Any],
) -> dict[str, Any]:
"""Merge one slide animation over defaults using writer inheritance rules."""
resolved = dict(default_animation)
if 'effect' in slide_animation and 'effect_options' not in slide_animation:
resolved.pop('effect_options', None)
resolved.update(slide_animation)
return resolved
def animation_group_effect_entries(
group_cfg: dict[str, Any],
*,
path: str,
) -> tuple[tuple[str, dict[str, Any]], ...]:
"""Expand one legacy group block or one ordered multi-effect envelope."""
if 'effects' not in group_cfg:
return ((path, group_cfg),)
extra_fields = sorted(set(group_cfg) - {'effects'})
if extra_fields:
rendered = ', '.join(repr(field) for field in extra_fields)
raise ValueError(
f'animations.json {path} cannot combine "effects" with '
f'other group-level field(s): {rendered}'
)
effects = group_cfg['effects']
if not isinstance(effects, list):
raise ValueError(f'animations.json {path}.effects must be an array')
if not effects:
raise ValueError(
f'animations.json {path}.effects must contain at least one effect'
)
entries: list[tuple[str, dict[str, Any]]] = []
for index, effect_cfg in enumerate(effects):
effect_path = f'{path}.effects[{index}]'
if not isinstance(effect_cfg, dict):
raise ValueError(
f'animations.json {effect_path} must be an object'
)
if 'effect' not in effect_cfg:
raise ValueError(
f'animations.json {effect_path}.effect is required'
)
entries.append((effect_path, effect_cfg))
return tuple(entries)
def _animation_parameter_errors(
value: dict[str, Any],
label: str,
*,
inherited_effect: object,
sound_is_path: bool = True,
) -> list[str]:
"""Validate PowerPoint effect/timing parameters shared by all scopes."""
errors: list[str] = []
effect = value.get('effect', inherited_effect)
effect_options = value.get('effect_options')
if effect_options is not None and 'effect' not in value:
errors.append(
f'animations.json {label} effect_options requires an explicit effect'
)
else:
try:
normalize_animation_effect_request(
effect,
effect_options,
allow_none=True,
allow_modes=True,
)
except ValueError as exc:
errors.append(f'animations.json {label}: {exc}')
repeat_count = value.get('repeat_count')
repeat_duration = value.get('repeat_duration')
if repeat_count is not None:
if (
isinstance(repeat_count, bool)
or not isinstance(repeat_count, (int, float))
or not math.isfinite(float(repeat_count))
or float(repeat_count) <= 0
or float(repeat_count) * 1000 > 4_294_967_295
):
errors.append(
f'animations.json {label} repeat_count must be a positive number: '
f'{repeat_count!r}'
)
if repeat_duration is not None:
try:
animation_seconds_to_milliseconds(
repeat_duration,
f'animations.json {label} repeat_duration',
allow_zero=False,
)
except ValueError as exc:
errors.append(str(exc))
if repeat_count is not None and repeat_duration is not None:
errors.append(
f'animations.json {label} repeat_count and repeat_duration '
'are mutually exclusive'
)
for field in ('auto_reverse', 'rewind'):
if field in value and not isinstance(value[field], bool):
errors.append(
f'animations.json {label} {field} must be a boolean: '
f'{value[field]!r}'
)
ratios: dict[str, float] = {}
for field in ('accelerate', 'decelerate', 'bounce_end'):
if field not in value:
continue
raw_ratio = value[field]
if (
isinstance(raw_ratio, bool)
or not isinstance(raw_ratio, (int, float))
or not math.isfinite(float(raw_ratio))
or not 0 <= float(raw_ratio) <= 1
):
errors.append(
f'animations.json {label} {field} must be between 0 and 1: '
f'{raw_ratio!r}'
)
else:
ratios[field] = float(raw_ratio)
if ratios.get('accelerate', 0) + ratios.get('decelerate', 0) > 1:
errors.append(
f'animations.json {label} accelerate + decelerate must not exceed 1'
)
if ratios.get('bounce_end', 0) and ratios.get('decelerate', 0):
errors.append(
f'animations.json {label} bounce_end and decelerate are '
'mutually exclusive in PowerPoint'
)
if 'restart' in value and value['restart'] not in ANIMATION_RESTARTS:
errors.append(
f'animations.json {label} restart must be one of '
f'{", ".join(ANIMATION_RESTARTS)}: {value["restart"]!r}'
)
if 'after_effect' in value:
after_effect = value['after_effect']
if isinstance(after_effect, str):
after_type = after_effect
after_color = None
elif isinstance(after_effect, dict):
unknown = set(after_effect) - {'type', 'color'}
for field in sorted(unknown):
errors.append(
f'animations.json {label} after_effect has unknown field: {field}'
)
after_type = after_effect.get('type', 'none')
after_color = after_effect.get('color')
else:
after_type = None
after_color = None
errors.append(
f'animations.json {label} after_effect must be a string or object'
)
if after_type is not None and after_type not in ANIMATION_AFTER_EFFECTS:
errors.append(
f'animations.json {label} after_effect.type must be one of '
f'{", ".join(ANIMATION_AFTER_EFFECTS)}: {after_type!r}'
)
elif after_type == 'dim':
if after_color is None:
errors.append(
f'animations.json {label} dim after_effect requires color'
)
else:
try:
normalize_animation_effect_options(
'emphasis_change_fill_color',
{'color': after_color},
)
except ValueError as exc:
errors.append(f'animations.json {label}: {exc}')
elif after_color is not None:
errors.append(
f'animations.json {label} after_effect.color is valid only '
'with type "dim"'
)
if 'sound' in value:
sound = value['sound']
if sound_is_path and (
not isinstance(sound, str) or not sound.strip()
):
errors.append(
f'animations.json {label} sound must be a non-empty path string'
)
elif sound_is_path and Path(sound).suffix.lower() not in AUDIO_CONTENT_TYPES:
errors.append(
f'animations.json {label} sound must use .m4a, .mp3, or .wav'
)
return errors
def _animation_trigger_error(trigger: object, label: str) -> str | None:
if not isinstance(trigger, str):
return f'animations.json {label} animation trigger must be a string'
try:
normalize_animation_trigger(trigger)
except ValueError:
valid = ', '.join(ANIMATION_TRIGGERS)
return (
f'animations.json {label} has unknown animation trigger: {trigger}; '
f'valid triggers: {valid}'
)
return None
def _unknown_field_errors(
value: dict[str, Any],
allowed: frozenset[str],
label: str,
) -> list[str]:
return [
f'animations.json {label} has unknown field: {field}'
for field in sorted(set(value) - allowed)
]
def validate_transition_config(config: dict[str, Any]) -> list[str]:
"""Return fatal transition-sidecar errors that must block export."""
errors: list[str] = []
defaults = config.get('defaults', {})
default_effect = 'fade'
if not isinstance(defaults, dict):
errors.append('animations.json field "defaults" must be an object')
else:
errors.extend(
_transition_scope_errors(
defaults,
'defaults',
inherited_effect='fade',
)
)
transition_defaults = defaults.get('transition', {})
if isinstance(transition_defaults, dict):
value = transition_defaults.get('effect', default_effect)
if isinstance(value, str) and _valid_transition_effect(value):
default_effect = value
slides = config.get('slides', {})
if not isinstance(slides, dict):
errors.append('animations.json field "slides" must be an object')
return errors
for slide_name, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict):
errors.append(f'animations.json slide "{slide_name}" must be an object')
continue
errors.extend(
_transition_scope_errors(
slide_cfg,
f'slide "{slide_name}"',
inherited_effect=default_effect,
)
)
errors.extend(_morph_scope_errors(slide_name, slide_cfg))
return errors
def _transition_scope_errors(
scope: dict[str, Any],
label: str,
*,
inherited_effect: str,
) -> list[str]:
if 'transition' not in scope:
return []
transition = scope['transition']
if not isinstance(transition, dict):
return [f'animations.json {label} field "transition" must be an object']
errors = _unknown_field_errors(
transition,
frozenset({
'effect',
'effect_options',
'duration',
'auto_advance',
'sound',
}),
f'{label} transition',
)
effect = transition.get('effect', inherited_effect)
effect_options = transition.get('effect_options')
if effect_options is not None and 'effect' not in transition:
errors.append(
f'animations.json {label} transition effect_options requires '
'an explicit effect'
)
else:
try:
normalize_transition_effect_request(effect, effect_options)
except ValueError as exc:
errors.append(f'animations.json {label} transition: {exc}')
try:
duration_allows_zero = (
normalize_transition_effect(effect) is None
)
except ValueError:
duration_allows_zero = False
for field, allow_zero in (
('duration', duration_allows_zero),
('auto_advance', True),
):
if field not in transition:
continue
try:
validate_seconds(
transition[field],
f'animations.json {label} transition {field}',
allow_zero=allow_zero,
)
except ValueError as exc:
errors.append(str(exc))
if 'sound' in transition:
sound = transition['sound']
if sound is None:
return errors
if not isinstance(sound, str) or not sound.strip():
errors.append(
f'animations.json {label} transition sound must be a '
'non-empty project-relative .wav path or null'
)
elif Path(sound).is_absolute() or PureWindowsPath(sound).drive:
errors.append(
f'animations.json {label} transition sound must be '
f'project-relative: {sound!r}'
)
elif Path(sound).suffix.lower() != '.wav':
errors.append(
f'animations.json {label} transition sound must use .wav'
)
return errors
def _morph_scope_errors(
slide_name: object,
slide_cfg: dict[str, Any],
) -> list[str]:
"""Validate one destination slide's deterministic Morph declaration."""
if 'morph' not in slide_cfg:
return []
label = f'slide "{slide_name}" morph'
morph = slide_cfg['morph']
if not isinstance(morph, dict):
return [f'animations.json {label} must be an object']
errors = _unknown_field_errors(
morph,
frozenset({'from', 'pairs'}),
label,
)
source_slide = morph.get('from')
if not isinstance(source_slide, str) or not source_slide.strip():
errors.append(
f'animations.json {label} field "from" must be a non-empty slide stem'
)
pairs = morph.get('pairs')
if not isinstance(pairs, dict) or not pairs:
errors.append(
f'animations.json {label} field "pairs" must be a non-empty object'
)
else:
source_groups: dict[str, str] = {}
destination_groups: dict[str, str] = {}
for key, pair in pairs.items():
pair_label = f'{label} pair "{key}"'
if (
not isinstance(key, str)
or not key.strip()
or key != key.strip()
or key.startswith('!!')
or any(ord(char) < 32 for char in key)
):
errors.append(
f'animations.json {pair_label} key must be a trimmed, '
'non-empty name without the !! prefix or control characters'
)
if not isinstance(pair, dict):
errors.append(f'animations.json {pair_label} must be an object')
continue
errors.extend(
_unknown_field_errors(
pair,
frozenset({'from', 'to'}),
pair_label,
)
)
for field in ('from', 'to'):
value = pair.get(field)
if not isinstance(value, str) or not value.strip():
errors.append(
f'animations.json {pair_label} field "{field}" must '
'be a non-empty top-level group id'
)
source_group = pair.get('from')
if isinstance(source_group, str) and source_group.strip():
previous = source_groups.setdefault(source_group, str(key))
if previous != str(key):
errors.append(
f'animations.json {label} source group '
f'"{source_group}" is assigned to both "{previous}" '
f'and "{key}"'
)
destination_group = pair.get('to')
if isinstance(destination_group, str) and destination_group.strip():
previous = destination_groups.setdefault(
destination_group,
str(key),
)
if previous != str(key):
errors.append(
f'animations.json {label} destination group '
f'"{destination_group}" is assigned to both "{previous}" '
f'and "{key}"'
)
transition = slide_cfg.get('transition')
if not isinstance(transition, dict) or 'effect' not in transition:
errors.append(
f'animations.json {label} requires an explicit slide transition '
'effect "morph"'
)
else:
try:
effect, options = normalize_transition_effect_request(
transition.get('effect'),
transition.get('effect_options'),
)
except ValueError:
pass
else:
if effect != 'morph':
errors.append(
f'animations.json {label} requires transition effect "morph"'
)
elif options.get('morph_by', 'object') != 'object':
errors.append(
f'animations.json {label} requires Morph by object'
)
return errors
def _resolve_morph_pairs(
slide_order: list[str],
config: dict[str, Any],
) -> tuple[list[MorphPair], list[str]]:
"""Resolve sidecar Morph declarations against the actual slide order."""
slides = config.get('slides', {})
if not isinstance(slides, dict):
return [], ['animations.json field "slides" must be an object']
order_by_slide = {slide_name: index for index, slide_name in enumerate(slide_order)}
pairs: list[MorphPair] = []
errors: list[str] = []
assignments: dict[str, dict[str, str]] = {}
keys: dict[str, dict[str, str]] = {}
declared_keys_by_destination: dict[str, set[str]] = {}
for destination_slide, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict) or 'morph' not in slide_cfg:
continue
scope_errors = _morph_scope_errors(destination_slide, slide_cfg)
if scope_errors:
errors.extend(scope_errors)
continue
destination_index = order_by_slide.get(str(destination_slide))
if destination_index is None:
errors.append(
'animations.json morph destination slide is missing: '
f'{destination_slide}'
)
continue
if destination_index == 0:
errors.append(
'animations.json first slide cannot declare an incoming Morph: '
f'{destination_slide}'
)
continue
morph = slide_cfg['morph']
source_slide = str(morph['from'])
expected_source = slide_order[destination_index - 1]
if source_slide != expected_source:
errors.append(
f'animations.json slide "{destination_slide}" morph.from must '
f'reference the immediately preceding slide "{expected_source}", '
f'not "{source_slide}"'
)
continue
declared_keys_by_destination[str(destination_slide)] = set(
morph['pairs']
)
for key, pair in morph['pairs'].items():
resolved = MorphPair(
source_slide=source_slide,
destination_slide=str(destination_slide),
key=str(key),
source_group_id=str(pair['from']),
destination_group_id=str(pair['to']),
)
pair_conflict = False
for slide_name, group_id in (
(resolved.source_slide, resolved.source_group_id),
(resolved.destination_slide, resolved.destination_group_id),
):
slide_assignments = assignments.setdefault(slide_name, {})
previous_key = slide_assignments.setdefault(group_id, resolved.key)
if previous_key != resolved.key:
errors.append(
f'animations.json Morph group "{slide_name}/{group_id}" '
f'is assigned to both "{previous_key}" and "{resolved.key}"'
)
pair_conflict = True
slide_keys = keys.setdefault(slide_name, {})
previous_group = slide_keys.setdefault(resolved.key, group_id)
if previous_group != group_id:
errors.append(
f'animations.json Morph key "{resolved.key}" maps to both '
f'"{slide_name}/{previous_group}" and '
f'"{slide_name}/{group_id}"'
)
pair_conflict = True
if not pair_conflict:
pairs.append(resolved)
for destination_slide, declared_keys in declared_keys_by_destination.items():
destination_index = order_by_slide[destination_slide]
source_slide = slide_order[destination_index - 1]
shared_keys = (
set(keys.get(source_slide, {}))
& set(keys.get(destination_slide, {}))
)
unexpected_keys = sorted(shared_keys - declared_keys)
if unexpected_keys:
errors.append(
f'animations.json slide "{destination_slide}" Morph would '
'force undeclared adjacent key(s): '
+ ', '.join(f'"{key}"' for key in unexpected_keys)
)
return pairs, list(dict.fromkeys(errors))
def resolve_morph_pairs(
slide_order: list[str],
config: dict[str, Any] | None,
) -> tuple[MorphPair, ...]:
"""Return validated deterministic Morph pairs in authored order."""
if not config:
return ()
pairs, errors = _resolve_morph_pairs(slide_order, config)
if errors:
raise ValueError('; '.join(errors))
return tuple(pairs)
def validate_animation_config_errors(config: dict[str, Any]) -> list[str]:
"""Return fatal object-animation errors that must block export."""
errors = _unknown_field_errors(
config,
frozenset({'version', 'defaults', 'slides'}),
'top level',
)
defaults = config.get('defaults', {})
if not isinstance(defaults, dict):
errors.append('animations.json field "defaults" must be an object')
else:
errors.extend(
_unknown_field_errors(
defaults,
frozenset({'transition', 'animation'}),
'defaults',
)
)
errors.extend(_animation_scope_errors(defaults, 'defaults'))
slides = config.get('slides', {})
if not isinstance(slides, dict):
errors.append('animations.json field "slides" must be an object')
return list(dict.fromkeys(errors))
for slide_name, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict):
errors.append(f'animations.json slide "{slide_name}" must be an object')
continue
errors.extend(
_unknown_field_errors(
slide_cfg,
frozenset({'transition', 'animation', 'groups', 'morph'}),
f'slide "{slide_name}"',
)
)
errors.extend(
_animation_scope_errors(slide_cfg, f'slide "{slide_name}"')
)
errors.extend(_animation_group_errors(slide_name, slide_cfg))
errors.extend(_resolved_animation_parameter_errors(config))
return list(dict.fromkeys(errors))
def _animation_scope_errors(scope: dict[str, Any], label: str) -> list[str]:
if 'animation' not in scope:
return []
animation = scope['animation']
if not isinstance(animation, dict):
return [f'animations.json {label} field "animation" must be an object']
errors = _unknown_field_errors(
animation,
frozenset({
'effect',
'effect_options',
'duration',
'stagger',
'trigger',
*ANIMATION_TIMING_OPTION_FIELDS,
'after_effect',
'sound',
}),
f'{label} animation',
)
if 'effect' in animation:
effect_error = _animation_effect_error(animation['effect'], label)
if effect_error:
errors.append(effect_error)
for field, allow_zero in (('duration', False), ('stagger', True)):
if field not in animation:
continue
try:
animation_seconds_to_milliseconds(
animation[field],
f'animations.json {label} animation {field}',
allow_zero=allow_zero,
)
except ValueError as exc:
errors.append(str(exc))
if 'trigger' in animation:
trigger_error = _animation_trigger_error(animation['trigger'], label)
if trigger_error:
errors.append(trigger_error)
errors.extend(
_animation_parameter_errors(
animation,
f'{label} animation',
inherited_effect='auto',
)
)
return errors
def _animation_group_errors(
slide_name: object,
slide_cfg: dict[str, Any],
) -> list[str]:
if 'groups' not in slide_cfg:
return []
groups = slide_cfg['groups']
if not isinstance(groups, dict):
return [
f'animations.json slide "{slide_name}" field "groups" must be an object'
]
errors: list[str] = []
for group_id, group_cfg in groups.items():
path = (
f'slides[{json.dumps(str(slide_name), ensure_ascii=False)}]'
f'.groups[{json.dumps(str(group_id), ensure_ascii=False)}]'
)
if not isinstance(group_cfg, dict):
errors.append(f'animations.json {path} must be an object')
continue
if 'effects' not in group_cfg:
errors.extend(
_animation_effect_entry_errors(
group_cfg,
path,
require_effect=False,
target_group_id=str(group_id),
)
)
continue
extra_fields = sorted(set(group_cfg) - {'effects'})
if extra_fields:
rendered = ', '.join(repr(field) for field in extra_fields)
errors.append(
f'animations.json {path} cannot combine "effects" with '
f'other group-level field(s): {rendered}'
)
effects = group_cfg['effects']
if not isinstance(effects, list):
errors.append(f'animations.json {path}.effects must be an array')
continue
if not effects:
errors.append(
f'animations.json {path}.effects must contain at least one effect'
)
continue
for index, effect_cfg in enumerate(effects):
effect_path = f'{path}.effects[{index}]'
if not isinstance(effect_cfg, dict):
errors.append(
f'animations.json {effect_path} must be an object'
)
continue
errors.extend(
_animation_effect_entry_errors(
effect_cfg,
effect_path,
require_effect=True,
target_group_id=str(group_id),
)
)
return errors
def _animation_effect_entry_errors(
effect_cfg: dict[str, Any],
path: str,
*,
require_effect: bool,
target_group_id: str,
) -> list[str]:
"""Validate one legacy group block or one ``effects[]`` row."""
errors = _unknown_field_errors(
effect_cfg,
_GROUP_EFFECT_FIELDS,
path,
)
if require_effect and 'effect' not in effect_cfg:
errors.append(f'animations.json {path}.effect is required')
elif 'effect' in effect_cfg:
effect_error = _animation_effect_error(effect_cfg['effect'], path)
if effect_error:
errors.append(effect_error)
for field, allow_zero in (('duration', False), ('delay', True)):
if field not in effect_cfg:
continue
try:
animation_seconds_to_milliseconds(
effect_cfg[field],
f'animations.json {path}.{field}',
allow_zero=allow_zero,
)
except ValueError as exc:
errors.append(str(exc))
if 'order' in effect_cfg:
order = effect_cfg['order']
if isinstance(order, bool) or not isinstance(order, int) or order <= 0:
errors.append(
f'animations.json {path}.order must be a positive integer: '
f'{order!r}'
)
if 'trigger' in effect_cfg:
trigger_error = _animation_trigger_error(effect_cfg['trigger'], path)
if trigger_error:
errors.append(trigger_error)
if 'trigger_shape' in effect_cfg:
trigger_shape = effect_cfg['trigger_shape']
if not isinstance(trigger_shape, str) or not trigger_shape.strip():
errors.append(
f'animations.json {path}.trigger_shape must be a '
f'non-empty group id: {trigger_shape!r}'
)
elif trigger_shape == target_group_id:
errors.append(
f'animations.json {path}.trigger_shape must reference '
'a different group'
)
if effect_cfg.get('effect') == 'none':
errors.append(
f'animations.json {path}.trigger_shape cannot be used '
'with effect "none"'
)
if (
'trigger' in effect_cfg
and effect_cfg.get('trigger') != 'on-click'
):
errors.append(
f'animations.json {path}.trigger_shape requires '
'trigger "on-click" when trigger is explicit'
)
errors.extend(
_animation_parameter_errors(
effect_cfg,
path,
inherited_effect='auto',
)
)
return errors
def _bounce_support_error(
animation: dict[str, Any],
label: str,
) -> str | None:
"""Return a writer-equivalent bounce support error for one resolved scope."""
bounce_end = animation.get('bounce_end')
if (
isinstance(bounce_end, bool)
or not isinstance(bounce_end, (int, float))
or not math.isfinite(float(bounce_end))
or float(bounce_end) <= 0
):
return None
try:
effect, options = normalize_animation_effect_request(
animation.get('effect', 'auto'),
animation.get('effect_options'),
allow_none=True,
allow_modes=True,
)
except ValueError:
return None
if effect is None or effect in ANIMATION_MODES:
return None
if animation_effect_supports_bounce_end(effect, options):
return None
return (
f'animations.json {label} effect {effect!r} has no behavior that '
'supports bounce_end'
)
def _resolved_animation_parameter_errors(config: dict[str, Any]) -> list[str]:
"""Validate effective animation parameters after sidecar inheritance."""
defaults = config.get('defaults', {})
default_animation: dict[str, Any] = {'effect': 'none'}
if isinstance(defaults, dict):
value = defaults.get('animation', {})
if isinstance(value, dict):
default_animation = resolve_slide_animation_config(
default_animation,
value,
)
errors: list[str] = []
default_error = _bounce_support_error(default_animation, 'defaults animation')
if default_error:
errors.append(default_error)
slides = config.get('slides', {})
if not isinstance(slides, dict):
return errors
for slide_name, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict):
continue
slide_value = slide_cfg.get('animation', {})
if not isinstance(slide_value, dict):
continue
slide_animation = resolve_slide_animation_config(
default_animation,
slide_value,
)
if _INHERITANCE_SENSITIVE_ANIMATION_FIELDS & set(slide_value):
errors.extend(
_animation_parameter_errors(
slide_animation,
f'slide "{slide_name}" animation',
inherited_effect='auto',
)
)
error = _bounce_support_error(
slide_animation,
f'slide "{slide_name}" animation',
)
if error:
errors.append(error)
groups = slide_cfg.get('groups', {})
if not isinstance(groups, dict):
continue
for group_id, group_cfg in groups.items():
if not isinstance(group_cfg, dict):
continue
path = (
f'slides[{json.dumps(str(slide_name), ensure_ascii=False)}]'
f'.groups[{json.dumps(str(group_id), ensure_ascii=False)}]'
)
try:
effect_entries = animation_group_effect_entries(
group_cfg,
path=path,
)
except ValueError:
continue
for effect_path, effect_cfg in effect_entries:
if not (
_INHERITANCE_SENSITIVE_ANIMATION_FIELDS
& set(effect_cfg)
):
continue
inherited_group_animation = {
field: slide_animation[field]
for field in (
'effect',
'effect_options',
'duration',
*ANIMATION_TIMING_OPTION_FIELDS,
'after_effect',
'sound',
)
if field in slide_animation
}
group_animation = resolve_slide_animation_config(
inherited_group_animation,
effect_cfg,
)
errors.extend(
_animation_parameter_errors(
group_animation,
effect_path,
inherited_effect='none',
)
)
error = _bounce_support_error(
group_animation,
effect_path,
)
if error:
errors.append(error)
return errors
def _declared_animation_sounds(
config: dict[str, Any],
) -> tuple[tuple[str, object], ...]:
"""Return explicitly declared sidecar sound values with scope labels."""
sounds: list[tuple[str, object]] = []
defaults = config.get('defaults', {})
if isinstance(defaults, dict):
animation = defaults.get('animation', {})
if isinstance(animation, dict) and 'sound' in animation:
sounds.append(('defaults animation', animation['sound']))
slides = config.get('slides', {})
if not isinstance(slides, dict):
return tuple(sounds)
for slide_name, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict):
continue
animation = slide_cfg.get('animation', {})
if isinstance(animation, dict) and 'sound' in animation:
sounds.append((f'slide "{slide_name}" animation', animation['sound']))
groups = slide_cfg.get('groups', {})
if not isinstance(groups, dict):
continue
for group_id, group_cfg in groups.items():
if not isinstance(group_cfg, dict):
continue
path = (
f'slides[{json.dumps(str(slide_name), ensure_ascii=False)}]'
f'.groups[{json.dumps(str(group_id), ensure_ascii=False)}]'
)
try:
effect_entries = animation_group_effect_entries(
group_cfg,
path=path,
)
except ValueError:
continue
for effect_path, effect_cfg in effect_entries:
if 'sound' in effect_cfg:
sounds.append((effect_path, effect_cfg['sound']))
return tuple(sounds)
def _animation_sound_path_errors(
project_path: Path,
config: dict[str, Any],
) -> list[str]:
"""Validate declared animation sound files against the project root."""
errors: list[str] = []
project_root = project_path.resolve()
for label, raw_sound in _declared_animation_sounds(config):
if not isinstance(raw_sound, str) or not raw_sound.strip():
continue
sound_path = Path(raw_sound)
if sound_path.suffix.lower() not in AUDIO_CONTENT_TYPES:
errors.append(
f'animations.json {label} sound must use .m4a, .mp3, or .wav'
)
continue
if not sound_path.is_absolute():
sound_path = project_root / sound_path
sound_path = sound_path.resolve()
if not sound_path.exists():
errors.append(
f'animations.json {label} sound file not found: {sound_path}'
)
elif not sound_path.is_file():
errors.append(
f'animations.json {label} sound path is not a regular file: '
f'{sound_path}'
)
return errors
def _declared_transition_sounds(
config: dict[str, Any],
) -> tuple[tuple[str, object], ...]:
"""Return explicitly declared non-null transition sound values."""
sounds: list[tuple[str, object]] = []
defaults = config.get('defaults', {})
if isinstance(defaults, dict):
transition = defaults.get('transition', {})
if (
isinstance(transition, dict)
and transition.get('sound') is not None
):
sounds.append(('defaults transition', transition['sound']))
slides = config.get('slides', {})
if not isinstance(slides, dict):
return tuple(sounds)
for slide_name, slide_cfg in slides.items():
if not isinstance(slide_cfg, dict):
continue
transition = slide_cfg.get('transition', {})
if (
isinstance(transition, dict)
and transition.get('sound') is not None
):
sounds.append(
(f'slide "{slide_name}" transition', transition['sound'])
)
return tuple(sounds)
def _transition_sound_path_errors(
project_path: Path,
config: dict[str, Any],
) -> list[str]:
"""Validate transition sounds as project-contained WAV files."""
errors: list[str] = []
project_root = project_path.resolve()
for label, raw_sound in _declared_transition_sounds(config):
if not isinstance(raw_sound, str) or not raw_sound.strip():
continue
sound_path = Path(raw_sound)
if sound_path.is_absolute() or PureWindowsPath(raw_sound).drive:
errors.append(
f'animations.json {label} sound must be project-relative: '
f'{raw_sound!r}'
)
continue
if sound_path.suffix.lower() != '.wav':
continue
resolved_path = (project_root / sound_path).resolve()
try:
resolved_path.relative_to(project_root)
except ValueError:
errors.append(
f'animations.json {label} sound escapes the project root: '
f'{raw_sound!r}'
)
continue
if not resolved_path.exists():
errors.append(
f'animations.json {label} sound file not found: {resolved_path}'
)
elif not resolved_path.is_file():
errors.append(
f'animations.json {label} sound path is not a regular file: '
f'{resolved_path}'
)
return errors
def validate_animation_config(
project_path: Path,
config: dict[str, Any] | None = None,
config_path: str | None = None,
*,
svg_files: list[Path] | None = None,
) -> list[str]:
"""Return sidecar-reference diagnostics for the selected SVG slides.
Fatal field/type/value checks are owned by
:func:`validate_animation_config_errors`. Anonymous groups are warnings;
references to invalid sound files, missing slides/groups, and structural
targets are fatal at export call sites. Slides omitted from a sparse
sidecar inherit defaults.
"""
if config is None:
config = load_animation_config(project_path, config_path)
if not config:
return []
warnings = _animation_sound_path_errors(project_path, config)
warnings.extend(_transition_sound_path_errors(project_path, config))
targets_by_slide, anonymous_groups = scan_project_targets(
project_path,
svg_files=svg_files,
)
for item in anonymous_groups:
warnings.append(f'{item} has no id and cannot be customized in animations.json')
duplicates_by_slide: dict[str, tuple[str, ...]] = {}
for slide_name, targets in targets_by_slide.items():
duplicates = _duplicate_target_ids(targets)
if duplicates:
duplicates_by_slide[slide_name] = duplicates
for slide_name, duplicates in duplicates_by_slide.items():
warnings.append(_duplicate_target_error(slide_name, duplicates))
known_slides = set(targets_by_slide)
known_groups_by_slide: dict[str, dict[str, GroupTarget]] = {}
for slide_name, slide_targets in targets_by_slide.items():
ambiguous_ids = set(duplicates_by_slide.get(slide_name, ()))
known_groups_by_slide[slide_name] = {
target.group_id: target
for target in slide_targets
if target.group_id not in ambiguous_ids
}
default_animation: dict[str, Any] = {'effect': 'none'}
defaults = config.get('defaults', {})
if isinstance(defaults, dict):
animation_value = defaults.get('animation', {})
if isinstance(animation_value, dict):
default_animation = resolve_slide_animation_config(
default_animation,
animation_value,
)
slides = config.get('slides', {})
if not isinstance(slides, dict):
return list(dict.fromkeys(warnings))
for slide_name, slide_cfg in slides.items():
if slide_name not in known_slides:
warnings.append(f'animations.json references missing slide: {slide_name}')
continue
if not isinstance(slide_cfg, dict):
continue
slide_animation = default_animation
animation_value = slide_cfg.get('animation', {})
if isinstance(animation_value, dict):
slide_animation = resolve_slide_animation_config(
default_animation,
animation_value,
)
slide_targets = targets_by_slide.get(slide_name, [])
duplicate_ids = duplicates_by_slide.get(slide_name, ())
ambiguous_ids = set(duplicate_ids)
known_groups = known_groups_by_slide.get(slide_name, {})
groups = slide_cfg.get('groups', {})
if not isinstance(groups, dict):
continue
for group_id, group_cfg in groups.items():
path = (
f'slides[{json.dumps(str(slide_name), ensure_ascii=False)}]'
f'.groups[{json.dumps(str(group_id), ensure_ascii=False)}]'
)
if group_id in ambiguous_ids:
continue
if group_id not in known_groups:
warnings.append(
f'animations.json {path} references a missing group'
)
continue
target = known_groups[group_id]
if not isinstance(group_cfg, dict):
continue
try:
effect_entries = animation_group_effect_entries(
group_cfg,
path=path,
)
except ValueError:
continue
if (
target.structurally_static
and any(
normalize_animation_effect(
effect_cfg.get(
'effect',
slide_animation.get('effect', 'none'),
),
allow_none=True,
allow_modes=True,
)
is not None
for _effect_path, effect_cfg in effect_entries
)
):
warnings.append(
f'animations.json {path} references a non-animatable '
'structural group'
)
for effect_path, effect_cfg in effect_entries:
trigger_shape = effect_cfg.get('trigger_shape')
if (
not isinstance(trigger_shape, str)
or not trigger_shape.strip()
):
continue
if trigger_shape in ambiguous_ids:
warnings.append(
f'animations.json {effect_path}.trigger_shape '
f'references ambiguous group {trigger_shape!r}'
)
continue
trigger_target = known_groups.get(trigger_shape)
if trigger_target is None:
warnings.append(
f'animations.json {effect_path}.trigger_shape '
f'references missing group {trigger_shape!r}'
)
elif trigger_target.structurally_static:
warnings.append(
f'animations.json {effect_path}.trigger_shape '
f'references non-triggerable structural group '
f'{trigger_shape!r}'
)
morph_pairs, morph_errors = _resolve_morph_pairs(
list(targets_by_slide),
config,
)
warnings.extend(morph_errors)
for pair in morph_pairs:
for slide_name, group_id in (
(pair.source_slide, pair.source_group_id),
(pair.destination_slide, pair.destination_group_id),
):
target = known_groups_by_slide.get(slide_name, {}).get(group_id)
if target is None:
warnings.append(
'animations.json Morph references missing or ambiguous group: '
f'{slide_name}/{group_id}'
)
elif target.structurally_static:
warnings.append(
'animations.json Morph references structural group: '
f'{slide_name}/{group_id}'
)
return list(dict.fromkeys(warnings))
def build_scaffold(project_path: Path) -> dict[str, Any]:
"""Build an editable animation override scaffold from current SVGs.
Chrome groups are omitted — layer/slide-number placeholder semantics are
authoritative, followed by an explicit structural role. ``is_chrome_id``
remains only for marker-free legacy SVGs. Listing static page framing in
the scaffold would be pure noise. A ``defaults`` stub is emitted up front
to remind the editor that deck-wide overrides exist and most pages should
inherit them.
"""
transition_defaults = {
'effect': 'fade',
'duration': 0.4,
'sound': None,
}
animation_defaults = {
'effect': 'none',
'duration': 0.4,
'stagger': 0.5,
'trigger': 'after-previous',
}
targets_by_slide, _anonymous = scan_project_targets(project_path)
slides: dict[str, Any] = {}
for slide_name, targets in targets_by_slide.items():
_require_unique_target_ids(slide_name, targets)
groups: dict[str, Any] = {}
for target in targets:
if target.chrome:
continue
groups[target.group_id] = {}
slides[slide_name] = {
'transition': {
'effect': transition_defaults['effect'],
'duration': transition_defaults['duration'],
},
'animation': dict(animation_defaults),
'groups': groups,
}
return {
'version': 1,
'defaults': {
'transition': transition_defaults,
'animation': animation_defaults,
},
'slides': slides,
}
def build_group_listing(project_path: Path) -> tuple[list[str], list[str]]:
"""Return one compact line per slide: ``<slide>: id1, id2, id3``.
Chrome groups are excluded — matches ``build_scaffold``'s policy so the
listing reflects exactly what an editor can override. Returns
``(lines, anonymous_warnings)``.
"""
targets_by_slide, anonymous = scan_project_targets(project_path)
lines: list[str] = []
for slide_name, targets in targets_by_slide.items():
_require_unique_target_ids(slide_name, targets)
ids = [t.group_id for t in targets if not t.chrome]
if not ids:
lines.append(f'{slide_name}: (no animatable groups)')
else:
lines.append(f'{slide_name}: {", ".join(ids)}')
return lines, anonymous
def write_scaffold(
project_path: Path,
output_path: str | None = None,
*,
force: bool = False,
) -> Path:
"""Write ``animations.json`` scaffold and return its path."""
if output_path:
path = Path(output_path)
else:
path = default_config_path(project_path)
if output_path and not path.is_absolute():
path = project_path / path
if path.exists() and not force:
raise FileExistsError(f'Animation config already exists: {path}')
scaffold = build_scaffold(project_path)
path.write_text(
json.dumps(scaffold, ensure_ascii=False, indent=2) + '\n',
encoding='utf-8',
)
return path