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# SPDX-FileCopyrightText: 2015-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
import bpy
from bpy.types import (
Operator,
OperatorFileListElement,
)
from bpy.props import (
BoolProperty,
CollectionProperty,
StringProperty,
)
from bpy.app.translations import pgettext_rpt as rpt_
# ########## Datablock previews... ##########
class WM_OT_previews_batch_generate(Operator):
"""Generate selected .blend file's previews"""
bl_idname = "wm.previews_batch_generate"
bl_label = "Batch-Generate Previews"
bl_options = {'REGISTER'}
# -----------
# File props.
files: CollectionProperty(
type=OperatorFileListElement,
options={'HIDDEN', 'SKIP_SAVE'},
name="",
description="Collection of file paths with common ``directory`` root",
)
directory: StringProperty(
maxlen=1024,
subtype='FILE_PATH',
options={'HIDDEN', 'SKIP_SAVE'},
name="",
description="Root path of all files listed in ``files`` collection",
)
# Show only images/videos, and directories!
filter_blender: BoolProperty(
default=True,
options={'HIDDEN', 'SKIP_SAVE'},
name="",
description="Show Blender files in the File Browser",
)
filter_folder: BoolProperty(
default=True,
options={'HIDDEN', 'SKIP_SAVE'},
name="",
description="Show folders in the File Browser",
)
# -----------
# Own props.
use_scenes: BoolProperty(
default=True,
name="Scenes",
description="Generate scenes' previews",
)
use_collections: BoolProperty(
default=True,
name="Collections",
description="Generate collections' previews",
)
use_objects: BoolProperty(
default=True,
name="Objects",
description="Generate objects' previews",
)
use_intern_data: BoolProperty(
default=True,
name="Materials & Textures",
description="Generate 'internal' previews (materials, textures, images, etc.)",
)
use_trusted: BoolProperty(
default=False,
name="Trusted Blend Files",
description="Enable Python evaluation for selected files",
)
use_backups: BoolProperty(
default=True,
name="Save Backups",
description="Keep a backup (.blend1) version of the files when saving with generated previews",
)
def invoke(self, context, _event):
context.window_manager.fileselect_add(self)
return {'RUNNING_MODAL'}
def execute(self, context):
import os
import subprocess
from bl_previews_utils import bl_previews_render as preview_render
context.window_manager.progress_begin(0, len(self.files))
context.window_manager.progress_update(0)
for i, fn in enumerate(self.files):
blen_path = os.path.join(self.directory, fn.name)
cmd = [
bpy.app.binary_path,
"--background",
"--factory-startup",
]
if self.use_trusted:
cmd.append("--enable-autoexec")
cmd.extend([
blen_path,
"--python",
os.path.join(os.path.dirname(preview_render.__file__), "bl_previews_render.py"),
"--",
])
if not self.use_scenes:
cmd.append("--no_scenes")
if not self.use_collections:
cmd.append("--no_collections")
if not self.use_objects:
cmd.append("--no_objects")
if not self.use_intern_data:
cmd.append("--no_data_intern")
if not self.use_backups:
cmd.append("--no_backups")
if subprocess.call(cmd):
self.report({'ERROR'}, rpt_("Previews generation process failed for file '{:s}'!").format(blen_path))
context.window_manager.progress_end()
return {'CANCELLED'}
context.window_manager.progress_update(i + 1)
context.window_manager.progress_end()
return {'FINISHED'}
class WM_OT_previews_batch_clear(Operator):
"""Clear selected .blend file's previews"""
bl_idname = "wm.previews_batch_clear"
bl_label = "Batch-Clear Previews"
bl_options = {'REGISTER'}
# -----------
# File props.
files: CollectionProperty(
type=OperatorFileListElement,
options={'HIDDEN', 'SKIP_SAVE'},
)
directory: StringProperty(
maxlen=1024,
subtype='FILE_PATH',
options={'HIDDEN', 'SKIP_SAVE'},
)
# Show only images/videos, and directories!
filter_blender: BoolProperty(
default=True,
options={'HIDDEN', 'SKIP_SAVE'},
)
filter_folder: BoolProperty(
default=True,
options={'HIDDEN', 'SKIP_SAVE'},
)
# -----------
# Own props.
use_scenes: BoolProperty(
default=True,
name="Scenes",
description="Clear scenes' previews",
)
use_collections: BoolProperty(
default=True,
name="Collections",
description="Clear collections' previews",
)
use_objects: BoolProperty(
default=True,
name="Objects",
description="Clear objects' previews",
)
use_intern_data: BoolProperty(
default=True,
name="Materials & Textures",
description="Clear 'internal' previews (materials, textures, images, etc.)",
)
use_trusted: BoolProperty(
default=False,
name="Trusted Blend Files",
description="Enable Python evaluation for selected files",
)
use_backups: BoolProperty(
default=True,
name="Save Backups",
description="Keep a backup (.blend1) version of the files when saving with cleared previews",
)
def invoke(self, context, _event):
context.window_manager.fileselect_add(self)
return {'RUNNING_MODAL'}
def execute(self, context):
import os
import subprocess
from bl_previews_utils import bl_previews_render as preview_render
context.window_manager.progress_begin(0, len(self.files))
context.window_manager.progress_update(0)
for i, fn in enumerate(self.files):
blen_path = os.path.join(self.directory, fn.name)
cmd = [
bpy.app.binary_path,
"--background",
"--factory-startup",
]
if self.use_trusted:
cmd.append("--enable-autoexec")
cmd.extend([
blen_path,
"--python",
os.path.join(os.path.dirname(preview_render.__file__), "bl_previews_render.py"),
"--",
"--clear",
])
if not self.use_scenes:
cmd.append("--no_scenes")
if not self.use_collections:
cmd.append("--no_collections")
if not self.use_objects:
cmd.append("--no_objects")
if not self.use_intern_data:
cmd.append("--no_data_intern")
if not self.use_backups:
cmd.append("--no_backups")
if subprocess.call(cmd):
self.report({'ERROR'}, rpt_("Previews clear process failed for file '{:s}'!").format(blen_path))
context.window_manager.progress_end()
return {'CANCELLED'}
context.window_manager.progress_update(i + 1)
context.window_manager.progress_end()
return {'FINISHED'}
class WM_OT_blend_strings_utf8_validate(Operator):
"""Check and fix all strings in current .blend file to be valid UTF-8 Unicode """ \
"""(needed for some old, 2.4x area files)"""
bl_idname = "wm.blend_strings_utf8_validate"
bl_label = "Validate .blend strings"
bl_options = {'REGISTER'}
def validate_strings(self, item, done_items):
if item is None:
return False
if item in done_items:
return False
done_items.add(item)
if getattr(item, "library", None) is not None:
return False # No point in checking library data, we cannot fix it anyway...
changed = False
for prop in item.bl_rna.properties:
if prop.identifier in {"bl_rna", "rna_type"}:
continue # Or we'd recurse 'till Hell freezes.
if prop.is_readonly:
continue
if prop.type == 'STRING':
val_bytes = item.path_resolve(prop.identifier, False).as_bytes()
val_utf8 = val_bytes.decode("utf-8", "replace")
val_bytes_valid = val_utf8.encode("utf-8")
if val_bytes_valid != val_bytes:
print("found bad utf8 encoded string {!r}, fixing to {!r} ({!r})...".format(
val_bytes, val_bytes_valid, val_utf8,
))
setattr(item, prop.identifier, val_utf8)
changed = True
elif prop.type == 'POINTER':
it = getattr(item, prop.identifier)
changed |= self.validate_strings(it, done_items)
elif prop.type == 'COLLECTION':
for it in getattr(item, prop.identifier):
changed |= self.validate_strings(it, done_items)
return changed
def execute(self, _context):
changed = False
done_items = set()
for prop in bpy.data.bl_rna.properties:
if prop.type == 'COLLECTION':
for it in getattr(bpy.data, prop.identifier):
changed |= self.validate_strings(it, done_items)
if changed:
self.report(
{'WARNING'},
"Some strings were fixed, don't forget to save the .blend file to keep those changes",
)
return {'FINISHED'}
classes = (
WM_OT_previews_batch_clear,
WM_OT_previews_batch_generate,
WM_OT_blend_strings_utf8_validate,
)
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