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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8-80 compliant>
__all__ = (
"load_image",
)
# limited replacement for BPyImage.comprehensiveImageLoad
def load_image(imagepath,
dirname="",
place_holder=False,
recursive=False,
ncase_cmp=True,
convert_callback=None,
verbose=False,
):
"""
Return an image from the file path with options to search multiple paths
and return a placeholder if its not found.
:arg filepath: The image filename
If a path precedes it, this will be searched as well.
:type filepath: string
:arg dirname: is the directory where the image may be located - any file at
the end will be ignored.
:type dirname: string
:arg place_holder: if True a new place holder image will be created.
this is useful so later you can relink the image to its original data.
:type place_holder: bool
:arg recursive: If True, directories will be recursively searched.
Be careful with this if you have files in your root directory because
it may take a long time.
:type recursive: bool
:arg ncase_cmp: on non windows systems, find the correct case for the file.
:type ncase_cmp: bool
:arg convert_callback: a function that takes an existing path and returns
a new one. Use this when loading image formats blender may not support,
the CONVERT_CALLBACK can take the path for a GIF (for example),
convert it to a PNG and return the PNG's path.
For formats blender can read, simply return the path that is given.
:type convert_callback: function
:return: an image or None
:rtype: :class:`bpy.types.Image`
"""
import os
import bpy
# TODO: recursive
# -------------------------------------------------------------------------
# Utility Functions
def _image_load_placeholder(path):
name = bpy.path.basename(path)
if type(name) == bytes:
name = name.decode('utf-8', "replace")
image = bpy.data.images.new(name, 128, 128)
# allow the path to be resolved later
image.filepath = path
image.source = 'FILE'
return image
def _image_load(path):
import bpy
if convert_callback:
path = convert_callback(path)
try:
image = bpy.data.images.load(path)
except RuntimeError:
image = None
if verbose:
if image:
print(" image loaded '%s'" % path)
else:
print(" image load failed '%s'" % path)
# image path has been checked so the path could not be read for some
# reason, so be sure to return a placeholder
if place_holder and image is None:
image = _image_load_placeholder(path)
return image
# -------------------------------------------------------------------------
if verbose:
print("load_image('%s', '%s', ...)" % (imagepath, dirname))
if os.path.exists(imagepath):
return _image_load(imagepath)
variants = [imagepath]
if dirname:
variants += [os.path.join(dirname, imagepath),
os.path.join(dirname, bpy.path.basename(imagepath)),
]
for filepath_test in variants:
if ncase_cmp:
ncase_variants = (filepath_test,
bpy.path.resolve_ncase(filepath_test),
)
else:
ncase_variants = (filepath_test, )
for nfilepath in ncase_variants:
if os.path.exists(nfilepath):
return _image_load(nfilepath)
# None of the paths exist so return placeholder
if place_holder:
return _image_load_placeholder(imagepath)
# TODO comprehensiveImageLoad also searched in bpy.config.textureDir
return None
|
