114 lines
4.3 KiB
Python
114 lines
4.3 KiB
Python
from __future__ import annotations
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from string import Formatter
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from typing import Any
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try:
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from . import row_camera as row_camera_policy
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except ImportError: # Allows local smoke tests from the repository root.
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import row_camera as row_camera_policy
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GENERIC_POSITIVE_SUFFIX = (
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"Use crisp clean comic linework, detailed hatching, soft blended shading, "
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"pastel skin tones, muted blues and pinks, warm sensual lighting, and tactile textured paper."
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)
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SINGLE_TEMPLATE = (
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"A {subject}: {style}, {age}, {body_phrase}, {skin}, {hair}, {eyes}. "
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"{item_label}: {item}. Scene: {scene}. Pose: {pose}. Facial expression: {expression}. "
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"Composition: {composition_prompt}. {positive_suffix} Avoid: {negative_prompt}."
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)
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COUPLE_TEMPLATE = (
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"{subject_phrase}: {style}. Ages: {age}. Body types: {body}. {item_label}: {item}. "
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"Scene: {scene}. Pose: {pose}. Facial expressions: {expression}. "
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"Composition: {composition_prompt}. {positive_suffix} Avoid: {negative_prompt}."
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)
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GROUP_TEMPLATE = (
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"{subject_phrase}: {style}, ages {age}, diverse adult body types. {item_label}: {item}. "
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"Scene: {scene}. Facial expressions: {expression}. Composition: {composition_prompt}. "
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"{positive_suffix} Avoid: {negative_prompt}."
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)
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LAYOUT_TEMPLATE = (
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"{item}: {style}, adults only, clean designed composition. Scene: {scene}. "
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"Facial expression: {expression}. Composition: {composition}. {positive_suffix} "
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"Avoid: {negative_prompt}. Use no readable text unless the layout naturally needs small decorative placeholder marks."
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)
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DEFAULT_CAPTION_TEMPLATE = (
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"{trigger}, {subject_phrase}, {age}, {item}, {scene}, {composition}, coloured pencil comic illustration"
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)
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class SafeFormatDict(dict):
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def __missing__(self, key: str) -> str:
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return "{" + key + "}"
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def format_template(template: str, context: dict[str, Any]) -> str:
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fields = {key for _, key, _, _ in Formatter().parse(template) if key}
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safe_context = SafeFormatDict({key: str(value) for key, value in context.items()})
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for field in fields:
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safe_context.setdefault(field, "{" + field + "}")
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return template.format_map(safe_context)
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def default_prompt_template(subject_type: str) -> str:
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if subject_type in ("woman", "man"):
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return SINGLE_TEMPLATE
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if subject_type == "couple":
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return COUPLE_TEMPLATE
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if subject_type == "group":
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return GROUP_TEMPLATE
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return LAYOUT_TEMPLATE
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def prompt_template_for(item: Any, subcategory: dict[str, Any], category: dict[str, Any], subject_type: str) -> str:
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if isinstance(item, dict) and "prompt_template" in item:
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return str(item["prompt_template"])
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template = str(subcategory.get("prompt_template") or category.get("prompt_template") or "")
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return template or default_prompt_template(subject_type)
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def caption_template_for(item: Any, subcategory: dict[str, Any], category: dict[str, Any]) -> str:
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return str(
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(item.get("caption_template") if isinstance(item, dict) else None)
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or subcategory.get("caption_template")
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or category.get("caption_template")
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or DEFAULT_CAPTION_TEMPLATE
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)
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def render_prompt_caption(
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*,
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item: Any,
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subcategory: dict[str, Any],
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category: dict[str, Any],
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subject_type: str,
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context: dict[str, Any],
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cast_descriptor_text: str = "",
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pov_prompt_directive: str = "",
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) -> dict[str, str]:
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prompt_template = prompt_template_for(item, subcategory, category, subject_type)
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caption_template = caption_template_for(item, subcategory, category)
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prompt = format_template(prompt_template, context)
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if subject_type == "configured_cast" and cast_descriptor_text and "{cast_descriptors}" not in prompt_template:
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prompt = row_camera_policy.insert_positive_directive(prompt, f"Characters: {cast_descriptor_text}.")
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if subject_type == "configured_cast" and pov_prompt_directive:
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prompt = row_camera_policy.insert_positive_directive(prompt, pov_prompt_directive)
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caption = format_template(caption_template, context)
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if subject_type == "configured_cast" and cast_descriptor_text and "{cast_descriptors}" not in caption_template:
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caption = f"{caption.rstrip()}, {cast_descriptor_text}"
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return {
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"prompt": prompt,
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"caption": caption,
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"prompt_template": prompt_template,
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"caption_template": caption_template,
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}
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