TypeError: Cannot create graphics instruction outside the main Kivy thread
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Yassin Marmoud
Dec 9, 2022, 5:58:29 AM12/9/22
to Kivy users support
I m facing this error but the problem is my friend use same code and everything works fine for him why ?
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error shows
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Exception in thread Thread-3:
Traceback (most recent call last):
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\threading.py", line 980, in _bootstrap_inner
self.run()
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 303, in Entry_Image
self.MDspinner(True)
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 487, in MDspinner
content_cls = SDsr())
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 102, in __init__
super(SDsr, self).__init__()
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivymd\uix\behaviors\declarative_behavior.py", line 311, in __init__
super().__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\boxlayout.py", line 145, in __init__
super(BoxLayout, self).__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\layout.py", line 76, in __init__
super(Layout, self).__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\widget.py", line 361, in __init__
self.canvas = Canvas(opacity=self.opacity)
File "kivy\graphics\instructions.pyx", line 608, in kivy.graphics.instructions.Canvas.__init__
File "kivy\graphics\instructions.pyx", line 154, in kivy.graphics.instructions.InstructionGroup.__init__
File "kivy\graphics\instructions.pyx", line 60, in kivy.graphics.instructions.Instruction.__init__
TypeError: Cannot create graphics instruction outside the main Kivy thread
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I have a button in main page when i click on that button after getting images in 3 cards
by camera or from gallery, the button run code in backend to check the images and give a result to do that im using model.h5 too and why my friend doesn't have that problem I install all the libs need it. any help please soon
Traceback (most recent call last):
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\threading.py", line 980, in _bootstrap_inner
self.run()
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 303, in Entry_Image
self.MDspinner(True)
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 487, in MDspinner
content_cls = SDsr())
File "c:\Users\ymarmoud\Desktop\important\thesis\recoVine\Screen01.py", line 102, in __init__
super(SDsr, self).__init__()
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivymd\uix\behaviors\declarative_behavior.py", line 311, in __init__
super().__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\boxlayout.py", line 145, in __init__
super(BoxLayout, self).__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\layout.py", line 76, in __init__
super(Layout, self).__init__(**kwargs)
File "C:\Users\ymarmoud\AppData\Local\Programs\Python\Python39\lib\site-packages\kivy\uix\widget.py", line 361, in __init__
self.canvas = Canvas(opacity=self.opacity)
File "kivy\graphics\instructions.pyx", line 608, in kivy.graphics.instructions.Canvas.__init__
File "kivy\graphics\instructions.pyx", line 154, in kivy.graphics.instructions.InstructionGroup.__init__
File "kivy\graphics\instructions.pyx", line 60, in kivy.graphics.instructions.Instruction.__init__
TypeError: Cannot create graphics instruction outside the main Kivy thread
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I have a button in main page when i click on that button after getting images in 3 cards
by camera or from gallery, the button run code in backend to check the images and give a result to do that im using model.h5 too and why my friend doesn't have that problem I install all the libs need it. any help please soon
Elliot Garbus
Dec 9, 2022, 9:17:19 AM12/9/22
to kivy-...@googlegroups.com
Is your code threaded?
All of the code that is rendering must be on the main thread. See: https://kivy.org/doc/stable/api-kivy.clock.html?highlight=mainthread#kivy.clock.mainthread
If you need more help, please share a minimal runnable example, that shows your problem.
--
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Yassin Marmoud
Dec 9, 2022, 9:30:48 AM12/9/22
to kivy-...@googlegroups.com
the code is working for my friend on his laptop why me not working even though I faced errors more than him like MDToolbar must be changed to
MDTopAppBar
i had to do str(stringProperty())
and the biggest problem is what I shared top.
this is the whole code:
--------------------------------
line 72 where self.id = StringProperty() works for him for me, not I got this error
i had to do str(stringProperty())
and the biggest problem is what I shared top.
this is the whole code:
--------------------------------
import asyncio
import json
import os
import threading
import webbrowser
from datetime import datetime
import kivy
import multitasking
import plyer
from kivy.animation import Animation
from kivy.clock import Clock
from kivy.core.image import Texture
from kivy.core.text import LabelBase
from kivy.core.window import Window
from kivy.properties import NumericProperty, StringProperty
from plyer import filechooser
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
import cv2
from kivymd.theming import ThemableBehavior
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.gridlayout import MDGridLayout
from kivymd.uix.button import MDFlatButton, MDRoundFlatButton
from kivymd.uix.card import MDCard
from kivy.uix.widget import Widget
from kivymd.uix.dialog import MDDialog
from kivymd.uix.label import MDLabel
from kivymd.uix.list import MDList, OneLineIconListItem
from kivymd.uix.menu import MDDropdownMenu
from kivymd.uix.progressbar import MDProgressBar
from kivymd.uix.relativelayout import MDRelativeLayout
from kivymd.uix.screen import MDScreen
from kivy.utils import get_color_from_hex
import time
from kivymd.uix.spinner import MDSpinner
from kivymd.uix.textfield import MDTextField
Window.size = 380, 580
class DEMO(MDScreen):
def __init__(self, *args, **kwargs):
super().__init__(**kwargs)
pass
class DrawerList(ThemableBehavior, MDList):
def set_color_item(self, instance_item):
'''Called when tap on a menu item.'''
for item in self.children:
if item.text_color == self.theme_cls.primary_color:
item.text_color = self.theme_cls.text_color
break
instance_item.text_color = self.theme_cls.primary_color
class MD_relativelayout(MDRelativeLayout):
def __init__(self, *arges, **kwargs):
super(MD_relativelayout, self).__init__(**kwargs)
self.id = StringProperty()
pass
class Textbutton(MDTextField):
def __init__(self, *arges, **kwargs):
super(Textbutton, self).__init__(**kwargs)
pass
class MDProBar(MDProgressBar):
def __init__(self, *args, **kwargs):
super(MDProBar, self).__init__(**kwargs)
pass
class Content(MDBoxLayout):
def __init__(self, *arges, **kwargs):
super(Content, self).__init__(**kwargs)
pass
class ItemDrawer(OneLineIconListItem):
def __init__(self, *arges, **kwargs):
super().__init__(**kwargs)
pass
class SDsr(MDBoxLayout):
def __init__(self, *args, **kwargs):
super(SDsr, self).__init__()
pass
class MD_relativelayout01(MDRelativeLayout):
def __init__(self, *arges, text, source, text01, id):
super(MD_relativelayout01, self).__init__()
self.text = text
self.source = source
self.text01 = text01
self.id = id
self.angle= 120
class MD_relativelayout02(MDRelativeLayout):
def __init__(self, *arges, text, source, text01, id):
super(MD_relativelayout02, self).__init__()
self.text = text
self.source = source
self.text01 = text01
self.id = id
class App01(MDApp):
def build(self):
global screen_manager
self.Counter = 0
self.Counter2 = 0
self.Counter0 = 0
self.List_Iamge = []
self.val_ = False
self.A =False
self.theme_cls.theme_style = "Light"
self.theme_cls.primary_palette = "Green"
screen_manager = ScreenManager()
screen_manager.add_widget(Builder.load_file('StartScreen.kv'))
screen_manager.add_widget(Builder.load_file("ResultScreen.kv"))
screen_manager.add_widget(Builder.load_file('mainscreen.kv'))
screen_manager.add_widget(Builder.load_file('View_Resultscreen.kv'))
screen_manager.add_widget(Builder.load_file('Save_Screen.kv'))
screen_manager.add_widget(Builder.load_file('sharescreen.kv'))
screen_manager.add_widget(Builder.load_file('animationscreen.kv'))
screen_manager.add_widget(Builder.load_file('ContutScreen.kv'))
screen_manager.add_widget(Builder.load_file('Camera_Screen.kv'))
return screen_manager
"""def on_start(self):
icons_item = {
"folder": "My files",
"account-multiple": "Shared with me",
"star": "Starred",
"history": "Recent",
"checkbox-marked": "Shared with me",
"upload": "Upload",
}
self.root.get_screen('mian_screen').ids['icon01'].icon = icons_item['folder']"""
def get_image(self, name):
if name == 'image1':
self.root.get_screen('mian_screen').ids['Card'].source = 'image/1.jpg'
self.root.get_screen('mian_screen').ids['Card'].text = 'image//01'
if name == 'image2':
self.root.get_screen('mian_screen').ids['Card2'].source = 'image/1.jpg'
self.root.get_screen('mian_screen').ids['Card2'].text = 'image//02'
if name == 'image3':
self.root.get_screen('mian_screen').ids['Card3'].source = 'image/1.jpg'
self.root.get_screen('mian_screen').ids['Card3'].text = 'image//03'
if name == 'image4':
self.root.get_screen('mian_screen').ids['Card4'].source = 'image/1.jpg'
self.root.get_screen('mian_screen').ids['Card4'].text = 'image//04'
if name == 'image5':
self.root.get_screen('mian_screen').ids['Card5'].source = 'image/1.jpg'
self.root.get_screen('mian_screen').ids['Card5'].text = 'image//05'
def change_Iamge(self, name):
self.name02 = name
self.dialog = MDDialog(
title=f'Choose \t {name} ',
text="Try to enter Image Pleases!!!! ",
radius=[20, 7, 20, 50],
size_hint=(1, 1.4),
type="alert",
buttons=[MDRoundFlatButton(
text="Camera", text_color=self.theme_cls.primary_dark, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.Camera),
MDRoundFlatButton(
text="Add+", text_color=self.theme_cls.primary_dark, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.Add_Image), ])
self.dialog.open()
def Add_Image(self, *args):
self.Counter = self.Counter + 1
self.selection01 = filechooser.open_file(o_selection=self.Selected)
if self.name02 == 'image1':
image01 = self.root.get_screen('mian_screen').ids['Card'].source = self.selection01[0]
self.List_Iamge.append(image01)
if self.name02 == 'image2':
image02 = self.root.get_screen('mian_screen').ids['Card2'].source = self.selection01[0]
self.Valu_Image01 =self.selection01[0]
if self.name02 == 'image3':
image03 = self.root.get_screen('mian_screen').ids['Card3'].source = self.selection01[0]
self.List_Iamge.append(image03)
if self.name02 == 'image4':
image04 = self.root.get_screen('mian_screen').ids['Card4'].source = self.selection01[0]
self.List_Iamge.append(image04)
if self.name02 == 'image5':
image05 = self.root.get_screen('mian_screen').ids['Card5'].source = self.selection01[0]
self.List_Iamge.append(image05)
self.dialog.dismiss()
def Selected(self, selection):
self.selection = selection
def change_screenStart(self):
self.animation_clock = Clock.schedule_interval(self.change_screen02, 2)
def stop_clock(self, *args):
self.animation_clock.cancel()
def change_screen01(self, *args):
widget = self.root.get_screen('animation_screen').ids['Image']
widget1 = self.root.get_screen('animation_screen').ids['TEXT']
screen_manager.current = 'animation_screen'
self.change_screenStart()
self.animation_widget(widget, widget1)
def change_screen02(self, *args):
screen_manager.current = 'mian_screen'
Clock.schedule_once(self.stop_clock, 1)
def animation_widget(self, widget, widget1, *args):
animation = Animation(size_hint=(0.8, 0.8))
animation.start(widget)
animation = Animation(font_size=30)
animation.start(widget1)
def close_dialog(self, args):
self.dialog.dismiss()
def change_nav(self, stat):
print(stat)
def Exit(self):
self.dialog = MDDialog(
title='Warring',
text="Are you sure to exit from App",
radius=[50, 50, 50, 50],
size_hint=(0.8, 1.4),
type="alert",
buttons=[MDRoundFlatButton(
text="Conform", text_color=self.theme_cls.primary_color, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=App01().stop),
MDRoundFlatButton(
text="Cancel", text_color=self.theme_cls.primary_color, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.close_dialog)])
self.dialog.open()
def change_mode(self):
if self.theme_cls.theme_style == "Light":
self.theme_cls.theme_style = "Dark"
self.root.get_screen('mian_screen').ids['icon01'].text_color = self.theme_cls.primary_dark
else:
self.theme_cls.theme_style = 'Light'
def change_screen(self, name):
screen_manager.current = name
def Conform_Image(self):
self.value = self.Counter + self.Counter2
if self.value > 1:
self.LaodSpinner()
time.sleep(0.1)
self.change_screen('Result_Screen')
for i in self.List_Iamge :
self.j=1
self.root.get_screen('Result_Screen').ids[f'Image_Result0{self.j}'].source = i
self.j=self.j+1
else:
self.dialog = MDDialog(
title='Error',
text=f"Image Selected is less then {self.value} ",
radius=[50, 50, 50, 50],
size_hint=(0.8, 1.4),
type="alert",
buttons=[MDRoundFlatButton(
text="Cancel", text_color=self.theme_cls.primary_dark, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.close_dialog), ])
self.dialog.open()
def Entry_Image(self):
self.MDspinner(True)
from test import Calcul_Result
self.Result_Image = Calcul_Result(self.List_Iamge)
self._value1_ =self.Result_Image.finalresult()[0]
self._value2_ =self.Result_Image.finalresult()[1]
print(self.Result_Image.finalresult())
self.Red_File(self._value1_ ,self._value2_)
self.dialog02.dismiss()
def Add_TextField(self):
if self.Counter0 == 0:
self.root.get_screen('Save_screen').ids['Card_Search'].add_widget(Textbutton(hint_text="bilal",
helper_text="Color is defined ", ))
self.Counter0 = +1
self.root.get_screen('Save_screen').ids['icon_search'].size_hint = (0, 0)
def Start_screen(self, name):
screen_manager.current = name
def Save_Image(self, instance):
self.Capteur_ecran()
self.val_ = True
for i in range(1):
self.root.get_screen('Save_screen').ids['SaveCard'].add_widget(
MD_relativelayout01(id='bilal0', text='result' + str(i), source='image/file.png',
text01='2020-11-14 23:22:45'))
time.sleep(1)
screen_manager.current = "Save_screen"
def Remove_MDCard(self):
try:
self.dialog = MDDialog(
title='verification',
text='Are you sure to delete it',
radius=[50, 50, 50, 50],
size_hint=(0.8, 1.4),
type="alert",
buttons=[MDRoundFlatButton(
text="OK", text_color=self.theme_cls.primary_color, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.DeletImage),
MDRoundFlatButton(
text="NO", text_color=self.theme_cls.primary_color, theme_text_color="Custom", pos=(0.2, 0.9),
on_release=self.close_dialog), ])
self.dialog.open()
except:
print('error')
def DeletImage(self, *args):
self.root.get_screen('Save_screen').ids['SaveCard'].remove_widget(
self.root.get_screen('Save_screen').ids['SaveCard'].children[0])
self.dialog.dismiss()
def Delete_Image(self, *args):
self.root.get_screen('View_Result_Screen').ids['BoxImage'].remove_widget(
self.root.get_screen('View_Result_Screen').ids['IMAGE01'].children[0])
def Verification(self, name):
if self.val_ == True:
screen_manager.current = name
else:
self.dialog = MDDialog(
title='Error',
text='There is no result recorded',
radius=[50, 50, 50, 50],
size_hint=(0.8, 1.4),
type="alert",
buttons=[MDRoundFlatButton(
text="OK", text_color=self.theme_cls.primary_color, theme_text_color="Primary", pos=(0.2, 0.9),
on_release=self.close_dialog), ])
self.dialog.open()
self.val_ = False
def Camera(self, *args):
self.capteur = cv2.VideoCapture(0, cv2.CAP_DSHOW)
screen_manager.current = 'Camera_Screen'
self.dialog.dismiss()
self.Update = Clock.schedule_interval(self.update, 1.0 / 33.0)
def update(self, *args):
# display image from cam in opencv window
ret, frame = self.capteur.read()
self.image_frame = frame
# convert it to texture
buf1 = cv2.flip(frame, 0).tostring()
self.recsize = cv2.resize(frame, (350, 700))
self.texture1 = Texture.create(size=(frame.shape[1], frame.shape[0]), colorfmt='rgb')
# if working on RASPBERRY PI, use colorfmt='rgba' here instead, but stick with "bgr" in blit_buffer.
self.texture1.blit_buffer(buf1, colorfmt='bgr', bufferfmt='ubyte')
# display image from the texture
self.root.get_screen('Camera_Screen').ids['Image_Camera'].texture = self.texture1
def take_picture(self, *args):
self.Counter2 = self.Counter2 + 1
data_time = datetime.now().microsecond
name_picture = f"Picture{str(data_time)}Image1.jpg"
file_save =os.path.dirname(__file__)+f'/Image_Picture/{name_picture}'
cv2.imwrite(file_save, self.image_frame)
if self.name02 == 'image1':
image01 = self.root.get_screen('mian_screen').ids['Card'].source = f'.\Image_Picture\{name_picture}'
self.List_Iamge.append(image01)
if self.name02 == 'image2':
image02 = self.root.get_screen('mian_screen').ids['Card2'].source = f'.\Image_Picture\{name_picture}'
self.List_Iamge.append(image02)
if self.name02 == 'image3':
image03 = self.root.get_screen('mian_screen').ids['Card3'].source = f'.\Image_Picture\{name_picture}'
self.List_Iamge.append(image03)
if self.name02 == 'image4':
image04 = self.root.get_screen('mian_screen').ids['Card4'].source = f'.\Image_Picture\{name_picture}'
self.List_Iamge.append(image04)
if self.name02 == 'image5':
image05 = self.root.get_screen('mian_screen').ids['Card5'].source = f'.\Image_Picture\{name_picture}'
self.List_Iamge.append(image05)
self.Update.cancel()
self.capteur.release()
screen_manager.current = "mian_screen"
def active_scroll(self, *args):
self.root.get_screen('Result_Screen').ids["active_scroll"].do_scroll_y = True
def Red_File(self, _value_, _value1_):
file_name01 = os.path.dirname(__file__) + '/classes/data.json'
with open(file_name01, 'r') as f:
self.lines = f.read()
self.lines_jsion =json.loads(self.lines)
f.close()
self.Name = self.lines_jsion[f'{_value_}'][0]['Name']
self.VineImg =f"./classes/{self.lines_jsion[f'{_value_}'][0]['VineImg']}"
self.Bottle1 = self.lines_jsion[f'{_value_}'][0]['Bottle1']
self.Bottle2 = self.lines_jsion[f'{_value_}'][0]['Bottle2']
self.info = f"classes/{self.lines_jsion[f'{_value_}'][0]['info']}"
self.wiki =self.lines_jsion[f'{_value_}'][0]['wiki']
file_name02 = os.path.dirname(__file__) +f"/{self.info}"
with open(file_name02 ,'r') as L :
self.info_read =L.readlines()
L.close()
self.Name2 = self.lines_jsion[f'{_value1_}'][0]['Name']
self.VineImg2 = f"./classes/{self.lines_jsion[f'{_value1_}'][0]['VineImg']}"
self.Bottle12 = self.lines_jsion[f'{_value1_}'][0]['Bottle1']
self.Bottle22 = self.lines_jsion[f'{_value1_}'][0]['Bottle2']
self.info2 = f"classes/{self.lines_jsion[f'{_value1_}'][0]['info']}"
self.wiki2 = self.lines_jsion[f'{_value1_}'][0]['wiki']
file_name022 = os.path.dirname(__file__) + f"/{self.info2}"
with open(file_name022, 'r') as L2:
self.info_read2 = L2.readlines()
L2.close()
self.Add_Tools()
def Add_Tools(self):
self.root.get_screen('Result_Screen').ids['Image_Result04'].source = str(self.VineImg)
self.root.get_screen('Result_Screen').ids['Image_Result05'].source = str(self.VineImg2)
self.root.get_screen('Result_Screen').ids['Result_text01'].text = f'{str(self.info_read[0])}'
self.root.get_screen('Result_Screen').ids['Result_text02'].text = f'{str(self.info_read2[0])}'
self.root.get_screen('Result_Screen').ids['Result_Name01'].text = f'{self.Name}'
self.root.get_screen('Result_Screen').ids['Result_Name02'].text = f'{self.Name2}'
def Open_WebSite(self, Name_Button):
if Name_Button=='1' :
webbrowser.open(self.wiki)
else :
webbrowser.open(self.wiki2)
def LaodSpinner(self):
self.thread_ =threading.Thread(target =self.Entry_Image)
if self.thread_.start() :
self.change_screen('Result_Screen')
self.thread_.join()
def MDspinner(self,*args):
self.dialog02 = MDDialog(
size_hint=(1, 1),
height = '120dp',
type="custom",
md_bg_color = self.theme_cls.primary_dark,
content_cls = SDsr())
self.dialog02.open()
def Capteur_ecran(self):
import pyscreenshot
self.PathSave = os.path.dirname(__file__)+'/Save_resukt'
image = pyscreenshot.grab(bbox=(200, 30, 500, 500))
data_time = datetime.now().microsecond
image.save(f"{self.PathSave}/Result{str(data_time)}.png")
if __name__ == '__main__':
LabelBase.register(name='MPoppins', fn_regular="poppins\Poppins""-Medium.ttf")
LabelBase.register(name='Lobster', fn_regular="Lobster\Lobster"
"-Regular.ttf")
LabelBase.register(name='RussoOne', fn_regular="font\RussoOne"
"-Regular.ttf")
App01().run()
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Robert
Dec 9, 2022, 11:59:56 AM12/9/22
to Kivy users support
Check that you and your friend are using exactly the same versions of Kivy and KivyMD
(And if you choose to share an example, it should be small).
Yassin Marmoud
Dec 10, 2022, 5:51:40 AM12/10/22
to kivy-...@googlegroups.com
The problem was the version thanks Man
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