Source code for large_image_source_dummy

##############################################################################
#  Copyright Kitware Inc.
#
#  Licensed under the Apache License, Version 2.0 ( the "License" );
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
##############################################################################

import contextlib
import importlib.metadata

from large_image.constants import SourcePriority
from large_image.tilesource import TileSource

with contextlib.suppress(importlib.metadata.PackageNotFoundError):
    __version__ = importlib.metadata.version(__name__)




class DummyTileSource(TileSource):
    name = 'dummy'
    extensions = {
        None: SourcePriority.MANUAL,
    }

    def __init__(self, *args, **kwargs):
        super().__init__()
        self.tileWidth = 0
        self.tileHeight = 0
        self.levels = 0
        self.sizeX = 0
        self.sizeY = 0



    @classmethod
    def canRead(cls, *args, **kwargs):
        return True




    def getTile(self, x, y, z, **kwargs):
        return b''






def open(*args, **kwargs):
    """
    Create an instance of the module class.
    """
    return DummyTileSource(*args, **kwargs)





def canRead(*args, **kwargs):
    """
    Check if an input can be read by the module class.
    """
    return DummyTileSource.canRead(*args, **kwargs)