InvokeAI/invokeai/app/services/images/images_base.py
2023-11-11 10:55:23 +11:00

135 lines
3.9 KiB
Python

from abc import ABC, abstractmethod
from typing import Callable, Optional
from PIL.Image import Image as PILImageType
from invokeai.app.invocations.baseinvocation import MetadataField, WorkflowField
from invokeai.app.services.image_records.image_records_common import (
ImageCategory,
ImageRecord,
ImageRecordChanges,
ResourceOrigin,
)
from invokeai.app.services.images.images_common import ImageDTO
from invokeai.app.services.shared.pagination import OffsetPaginatedResults
class ImageServiceABC(ABC):
"""High-level service for image management."""
_on_changed_callbacks: list[Callable[[ImageDTO], None]]
_on_deleted_callbacks: list[Callable[[str], None]]
def __init__(self) -> None:
self._on_changed_callbacks = []
self._on_deleted_callbacks = []
def on_changed(self, on_changed: Callable[[ImageDTO], None]) -> None:
"""Register a callback for when an image is changed"""
self._on_changed_callbacks.append(on_changed)
def on_deleted(self, on_deleted: Callable[[str], None]) -> None:
"""Register a callback for when an image is deleted"""
self._on_deleted_callbacks.append(on_deleted)
def _on_changed(self, item: ImageDTO) -> None:
for callback in self._on_changed_callbacks:
callback(item)
def _on_deleted(self, item_id: str) -> None:
for callback in self._on_deleted_callbacks:
callback(item_id)
@abstractmethod
def create(
self,
image: PILImageType,
image_origin: ResourceOrigin,
image_category: ImageCategory,
node_id: Optional[str] = None,
session_id: Optional[str] = None,
board_id: Optional[str] = None,
is_intermediate: Optional[bool] = False,
metadata: Optional[MetadataField] = None,
workflow: Optional[WorkflowField] = None,
) -> ImageDTO:
"""Creates an image, storing the file and its metadata."""
pass
@abstractmethod
def update(
self,
image_name: str,
changes: ImageRecordChanges,
) -> ImageDTO:
"""Updates an image."""
pass
@abstractmethod
def get_pil_image(self, image_name: str) -> PILImageType:
"""Gets an image as a PIL image."""
pass
@abstractmethod
def get_record(self, image_name: str) -> ImageRecord:
"""Gets an image record."""
pass
@abstractmethod
def get_dto(self, image_name: str) -> ImageDTO:
"""Gets an image DTO."""
pass
@abstractmethod
def get_metadata(self, image_name: str) -> Optional[MetadataField]:
"""Gets an image's metadata."""
pass
@abstractmethod
def get_path(self, image_name: str, thumbnail: bool = False) -> str:
"""Gets an image's path."""
pass
@abstractmethod
def validate_path(self, path: str) -> bool:
"""Validates an image's path."""
pass
@abstractmethod
def get_url(self, image_name: str, thumbnail: bool = False) -> str:
"""Gets an image's or thumbnail's URL."""
pass
@abstractmethod
def get_many(
self,
offset: int = 0,
limit: int = 10,
image_origin: Optional[ResourceOrigin] = None,
categories: Optional[list[ImageCategory]] = None,
is_intermediate: Optional[bool] = None,
board_id: Optional[str] = None,
) -> OffsetPaginatedResults[ImageDTO]:
"""Gets a paginated list of image DTOs."""
pass
@abstractmethod
def delete(self, image_name: str):
"""Deletes an image."""
pass
@abstractmethod
def delete_intermediates(self) -> int:
"""Deletes all intermediate images."""
pass
@abstractmethod
def get_intermediates_count(self) -> int:
"""Gets the number of intermediate images."""
pass
@abstractmethod
def delete_images_on_board(self, board_id: str):
"""Deletes all images on a board."""
pass