# ##### 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 ##### from blenderkit import utils import bpy import sys, threading, os import re from bpy.props import ( EnumProperty, ) bg_processes = [] class threadCom: # object passed to threads to read background process stdout info ''' Object to pass data between thread and ''' def __init__(self, eval_path_computing, eval_path_state, eval_path, process_type, proc, location=None, name=''): # self.obname=ob.name self.name = name self.eval_path_computing = eval_path_computing # property that gets written to. self.eval_path_state = eval_path_state # property that gets written to. self.eval_path = eval_path # property that gets written to. self.process_type = process_type self.outtext = '' self.proc = proc self.lasttext = '' self.message = '' # the message to be sent. self.progress = 0.0 self.location = location self.error = False self.log = '' def threadread(tcom): '''reads stdout of background process. this threads basically waits for a stdout line to come in, fills the data, dies.''' found = False while not found: if tcom.proc.poll() is not None: #process terminated return inline = tcom.proc.stdout.readline() # print('readthread', time.time()) inline = str(inline) s = inline.find('progress{') if s > -1: e = inline.find('}') tcom.outtext = inline[s + 9:e] found = True if tcom.outtext.find('%') > -1: tcom.progress = float(re.findall('\d+\.\d+|\d+', tcom.outtext)[0]) return if s == -1: s = inline.find('Remaining') if s > -1: # e=inline.find('}') tcom.outtext = inline[s: s + 18] found = True return if len(inline) > 3: print(inline, len(inline)) # if inline.find('Error'): # tcom.error = True # tcom.outtext = inline[2:] def progress(text, n=None): '''function for reporting during the script, works for background operations in the header.''' # for i in range(n+1): # sys.stdout.flush() text = str(text) if n is None: n = '' else: n = ' ' + ' ' + str(int(n * 1000) / 1000) + '% ' spaces = ' ' * (len(text) + 55) try: sys.stdout.write('progress{%s%s}\n' % (text, n)) sys.stdout.flush() except Exception as e: print('background progress reporting race condition') print(e) # @bpy.app.handlers.persistent def bg_update(): '''monitoring of background process''' text = '' #utils.p('timer search') # utils.p('start bg_blender timer bg_update') s = bpy.context.scene global bg_processes if len(bg_processes) == 0: # utils.p('end bg_blender timer bg_update') return 2 #cleanup dead processes first remove_processes = [] for p in bg_processes: if p[1].proc.poll() is not None: remove_processes.append(p) for p in remove_processes: bg_processes.remove(p) #Parse process output for p in bg_processes: # proc=p[1].proc readthread = p[0] tcom = p[1] if not readthread.is_alive(): readthread.join() # readthread. estring = None if tcom.error: estring = tcom.eval_path_computing + ' = False' tcom.lasttext = tcom.outtext if tcom.outtext != '': tcom.outtext = '' text =tcom.lasttext.replace("'","") estring = tcom.eval_path_state + ' = text' # print(tcom.lasttext) if 'finished successfully' in tcom.lasttext: bg_processes.remove(p) estring = tcom.eval_path_computing + ' = False' else: readthread = threading.Thread(target=threadread, args=([tcom]), daemon=True) readthread.start() p[0] = readthread if estring: try: exec(estring) except Exception as e: print('Exception while reading from background process') print(e) # if len(bg_processes) == 0: # bpy.app.timers.unregister(bg_update) if len(bg_processes) > 0: # utils.p('end bg_blender timer bg_update') return .3 # utils.p('end bg_blender timer bg_update') return 1. process_types = ( ('UPLOAD', 'Upload', ''), ('THUMBNAILER', 'Thumbnailer', ''), ) process_sources = ( ('MODEL', 'Model', 'set of objects'), ('SCENE', 'Scene', 'set of scenes'), ('HDR', 'HDR', 'HDR image'), ('MATERIAL', 'Material', 'any .blend Material'), ('TEXTURE', 'Texture', 'a texture, or texture set'), ('BRUSH', 'Brush', 'brush, can be any type of blender brush'), ) class KillBgProcess(bpy.types.Operator): '''Remove processes in background''' bl_idname = "object.kill_bg_process" bl_label = "Kill Background Process" bl_options = {'REGISTER'} process_type: EnumProperty( name="Type", items=process_types, description="Type of process", default="UPLOAD", ) process_source: EnumProperty( name="Source", items=process_sources, description="Source of process", default="MODEL", ) def execute(self, context): s = bpy.context.scene cls = bpy.ops.object.convert.__class__ # first do the easy stuff...TODO all cases. props = utils.get_upload_props() if self.process_type == 'UPLOAD': props.uploading = False if self.process_type == 'THUMBNAILER': props.is_generating_thumbnail = False global blenderkit_bg_process # print('killing', self.process_source, self.process_type) # then go kill the process. this wasn't working for unsetting props and that was the reason for changing to the method above. processes = bg_processes for p in processes: tcom = p[1] # print(tcom.process_type, self.process_type) if tcom.process_type == self.process_type: source = eval(tcom.eval_path) kill = False #TODO HDR - add killing of process if source.bl_rna.name == 'Object' and self.process_source == 'MODEL': if source.name == bpy.context.active_object.name: kill = True if source.bl_rna.name == 'Scene' and self.process_source == 'SCENE': if source.name == bpy.context.scene.name: kill = True if source.bl_rna.name == 'Image' and self.process_source == 'HDR': ui_props = bpy.context.scene.blenderkitUI if source.name == ui_props.hdr_upload_image.name: kill = False if source.bl_rna.name == 'Material' and self.process_source == 'MATERIAL': if source.name == bpy.context.active_object.active_material.name: kill = True if source.bl_rna.name == 'Brush' and self.process_source == 'BRUSH': brush = utils.get_active_brush() if brush is not None and source.name == brush.name: kill = True if kill: estring = tcom.eval_path_computing + ' = False' exec(estring) processes.remove(p) tcom.proc.kill() return {'FINISHED'} def add_bg_process(location=None, name=None, eval_path_computing='', eval_path_state='', eval_path='', process_type='', process=None): '''adds process for monitoring''' global bg_processes tcom = threadCom(eval_path_computing, eval_path_state, eval_path, process_type, process, location, name) readthread = threading.Thread(target=threadread, args=([tcom]), daemon=True) readthread.start() bg_processes.append([readthread, tcom]) # if not bpy.app.timers.is_registered(bg_update): # bpy.app.timers.register(bg_update, persistent=True) def register(): bpy.utils.register_class(KillBgProcess) user_preferences = bpy.context.preferences.addons['blenderkit'].preferences if user_preferences.use_timers: bpy.app.timers.register(bg_update) def unregister(): bpy.utils.unregister_class(KillBgProcess) if bpy.app.timers.is_registered(bg_update): bpy.app.timers.unregister(bg_update)