hoek rand
Reputation: 329
Having trouble with implementing a timer in Kivy
I'm trying to create a kivy application. The Application works as following:
- I send the amount of seconds I want my timer to last via MQTT over the topic 'tafelxuren' (x is a number between 1 and 8).
- After sending the amounts of seconds I want it to last, I send a second MQTT command to the topic 'tafelxstart' (x is a number between 1 and 8) with the command 'start'.
- After sending the start command, my timer starts running.
Under my timer I have 3 buttons, pause, resume and stop. While starting and pausing the timer works using MQTT commands, I cannot seem to get my resume button to function properly, if there's 26 seconds left after clicking on the pause button, I want my timer to resume from that point. Instead, it starts again from the beginning
My main.py:
import os
if os.name == 'posix':
os.environ['KIVY_GL_BACKEND'] = 'gl'
import kivy, time,threading
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.widget import Widget
from kivy.properties import NumericProperty, ObjectProperty
from kivy.clock import Clock
from kivy.config import Config
import paho.mqtt.client as mqtt
Config.set('graphics', 'fullscreen', 'auto')
import paho.mqtt.publish as publish
import paho.mqtt.subscribe as subscribe
import config
# lege MQTT-client instantie
client = None
# De topics die gebruikt worden
ingesteldetijd = [config.timeTopics['tafel1'],config.timeTopics['tafel2'],config.timeTopics['tafel3'],config.timeTopics['tafel4'],config.timeTopics['tafel5'],config.timeTopics['tafel6'],config.timeTopics['tafel7'],config.timeTopics['tafel8']]
ingesteldetijdTopics = [config.tim1, config.tim2, config.tim3, config.tim4, config.tim5, config.tim6, config.tim7, config.tim8]
starttopics = [config.startTopics['tafel1'],config.startTopics['tafel2'],config.startTopics['tafel3'],config.startTopics['tafel4'],config.startTopics['tafel5'],config.startTopics['tafel6'],config.startTopics['tafel7'],config.startTopics['tafel8']]
def on_connect(client,userdata,flags,rc):
'''
This function gets triggered when MQTT is connected succesfully
'''
if(rc == 0):
print("[INFO ] [MQTT ] MQTT connected to broker "+config.settings['broker']+".")
client.subscribe('#')
##################################### ingestelde tijd subscriptions #####################################
for x in range(0,8):
client.subscribe(ingesteldetijd[x])
print('[INFO ] [MQTT ] Subscribed to '+ingesteldetijd[x])
##################################### ingestelde tijd subscriptions #####################################
##################################### start topic subscriptions #####################################
for x in range(0,8):
client.subscribe(starttopics[x])
print('[INFO ] [MQTT ] Subscribed to '+starttopics[x])
##################################### start topic subscriptions #####################################
else:
print("MQTT connection to broker "+config.settings['broker']+"failed.")
def on_message(client,userdata,msg):
'''
If there's a message received on one of the topics, the messages gets handled here.
'''
################################## tijd instellen topic ##################################
if msg.topic == 'tafel1uren':
config.tim1 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel2uren':
config.tim2 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel3uren':
config.tim3 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel4uren':
config.tim4 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel5uren':
config.tim5 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel6uren':
config.tim6 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel7uren':
config.tim7 = int(msg.payload.decode('utf-8'))
if msg.topic == 'tafel8uren':
config.tim8 = int(msg.payload.decode('utf-8'))
################################## tijd instellen topic ##################################
if msg.topic == config.startTopics['tafel1']:
if msg.payload.decode('utf-8') == 'start':
config.tb1start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb1start = False
if msg.topic == config.startTopics['tafel2']:
if msg.payload.decode('utf-8') == 'start':
config.tb2start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb2start = False
if msg.topic == config.startTopics['tafel3']:
if msg.payload.decode('utf-8') == 'start':
config.tb3start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb3start = False
if msg.topic == config.startTopics['tafel4']:
if msg.payload.decode('utf-8') == 'start':
config.tb4start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb4start = False
if msg.topic == config.startTopics['tafel5']:
if msg.payload.decode('utf-8') == 'start':
config.tb5start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb5start = False
if msg.topic == config.startTopics['tafel6']:
if msg.payload.decode('utf-8') == 'start':
config.tb6start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb6start = False
if msg.topic == config.startTopics['tafel7']:
if msg.payload.decode('utf-8') == 'start':
config.tb7start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb7start = False
if msg.topic == config.startTopics['tafel8']:
if msg.payload.decode('utf-8') == 'start':
config.tb8start = True
if msg.payload.decode('utf-8') == 'stop':
config.tb8start = False
class CrudeTimerGrid(GridLayout):
_python_access = ObjectProperty(None)
time = NumericProperty(0)
def __init__(self,**kwargs):
super(CrudeTimerGrid,self).__init__(**kwargs)
self.runningTimer = 0
Clock.schedule_interval(self.load_times,1)
Clock.schedule_interval(self.start,1)
def load_times(self, *_):
tafelobjecten = self.parent.parent.ids
for x in range(0,8):
if list(tafelobjecten.values())[x] == self:
if str(list(tafelobjecten.keys())[x]) == 'tafel1':
self.time = config.tim1
if str(list(tafelobjecten.keys())[x]) == 'tafel2':
self.time = config.tim2
if str(list(tafelobjecten.keys())[x]) == 'tafel3':
self.time = config.tim3
if str(list(tafelobjecten.keys())[x]) == 'tafel4':
self.time = config.tim4
if str(list(tafelobjecten.keys())[x]) == 'tafel5':
self.time = config.tim5
if str(list(tafelobjecten.keys())[x]) == 'tafel6':
self.time = config.tim6
if str(list(tafelobjecten.keys())[x]) == 'tafel7':
self.time = config.tim7
if str(list(tafelobjecten.keys())[x]) == 'tafel8':
self.time = config.tim8
def start(self, *_):
tafelobjecten = self.parent.parent.ids
self.runningTimer = self.time
for x in range(0,8):
if list(tafelobjecten.values())[x] == self:
if str(list(tafelobjecten.keys())[x]) == 'tafel1':
#self.time = config.tim1
if config.tb1start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel2':
#self.time = config.tim2
if config.tb2start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel3':
#self.time = config.tim3
if config.tb3start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel4':
#self.time = config.tim4
if config.tb4start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel5':
#self.time = config.tim5
if config.tb5start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel6':
#self.time = config.tim6
if config.tb6start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel7':
#self.time = config.tim7
if config.tb7start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
elif str(list(tafelobjecten.keys())[x]) == 'tafel8':
#self.time = config.tim8
if config.tb8start == True:
if(self.runningTimer > 0):
Clock.schedule_interval(self.tick,1)
def pause(self):
tafelobjecten = self.parent.parent.ids
for x in range(0,8):
if list(tafelobjecten.values())[x] == self:
if str(list(tafelobjecten.keys())[x]) == 'tafel1':
config.tb1start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel2':
config.tb2start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel3':
config.tb3start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel4':
config.tb4start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel5':
config.tb5start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel6':
config.tb6start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel7':
config.tb7start = False
Clock.unschedule(self.tick)
if str(list(tafelobjecten.keys())[x]) == 'tafel8':
config.tb8start = False
Clock.unschedule(self.tick)
def resume(self, *_):
tafelobjecten = self.parent.parent.ids
for x in range(0,8):
if list(tafelobjecten.values())[x] == self:
if str(list(tafelobjecten.keys())[x]) == 'tafel1':
config.tb1start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel2':
config.tb2start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel3':
config.tb3start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel4':
config.tb4start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel5':
config.tb5start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel6':
config.tb6start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel7':
config.tb7start = True
Clock.schedule_interval(self.tick,1)
if str(list(tafelobjecten.keys())[x]) == 'tafel8':
config.tb8start = True
Clock.schedule_interval(self.tick,1) #pass
def stop(self, *_):
#TODO: implement stop button
pass
def tick(self, *_):
tafelobjecten = self.parent.parent.ids
if self.runningTimer > 0:
self.runningTimer -= 1
# publish de juiste tafel topic met de waarde van de restrerende tijd
for x in range(0,8):
if list(tafelobjecten.values())[x] == self:
client.publish(topic = str(list(tafelobjecten.keys())[x]), payload = str(self.runningTimer))
self.ids.Changelabel.text = str(time.strftime('%H:%M:%S',time.gmtime(self.runningTimer)))
else:
pass
class Main(GridLayout):
pass
class CrudeTimerApp(App):
pass
if __name__ == '__main__':
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.username_pw_set(config.settings['username'], config.settings['password'])
client.connect(config.settings['broker'])
t = threading.Thread(target=client.loop_start())
t.daemon = True
t.start()
CrudeTimerApp().run()
My .kv file:
#:kivy 1.10.1
################################### Widget template ##########################################
<CrudeTimerGrid>:
_python_access: Changelabel
id: timer
rows: 4
BoxLayout:
size_hint_y: 0.15
orientation: 'horizontal'
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
Label:
font_size: 20
text: 'Restrerende tijd:'
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
Label:
font_size: 20
id: Changelabel
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
BoxLayout:
size_hint_y: 0.15
orientation: 'horizontal'
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
Label:
font_size: 20
text: 'Pauzetijd:'
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
Label:
font_size: 20
text: '00'
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
BoxLayout:
size_hint_y: 0.2
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
Button:
text: "Pauze"
on_press: timer.pause()
Button:
text: "Hervatten"
on_press: timer.resume()
Button:
text: "Stoppen"
#on_press: timer.reset()
Label:
text: ''
################################### Widget template ##########################################
<Main@Widget>:
rows: 2 # 2 rijen
cols: 4 # 4 colums
padding: 10
spacing: 10
################################### Tafel 1 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 1'
CrudeTimerGrid:
id: tafel1
################################### Tafel 1 ##########################################
################################### Tafel 2 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 2'
CrudeTimerGrid:
id: tafel2
################################### Tafel 2 ##########################################
################################### Tafel 3 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 3'
CrudeTimerGrid:
id: tafel3
################################### Tafel 3 ##########################################
################################### Tafel 4 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 4'
CrudeTimerGrid:
id: tafel4
################################### Tafel 4 ##########################################
################################### Tafel 5 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 5'
CrudeTimerGrid:
id: tafel5
################################### Tafel 5 ##########################################
################################### Tafel 6 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 6'
CrudeTimerGrid:
id: tafel6
################################### Tafel 6 ##########################################
################################### Tafel 7 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 7'
CrudeTimerGrid:
id: tafel7
################################### Tafel 7 ##########################################
################################### Tafel 8 ##########################################
BoxLayout:
canvas.before:
Color:
rgba: .5, .5, .5, 1
Line:
width: 2
rectangle: self.x, self.y, self.width, self.height
orientation: 'vertical'
Label:
size_hint_y: 0.15
font_size: 25
canvas.before:
Color:
rgba: .5, .5, .5, 1
Rectangle:
pos: self.pos
size: self.size
text: 'Tafel 8'
CrudeTimerGrid:
id: tafel8
################################### Tafel 8 ##########################################
Main:
my config.py:
# MQTT broker settings.
settings = dict(
broker = '172.16.24.128',
username = 'pi',
password = 'Piaservice123'
)
# start topics.
startTopics = dict(
tafel1 = 'tafel1start',
tafel2 = 'tafel2start',
tafel3 = 'tafel3start',
tafel4 = 'tafel4start',
tafel5 = 'tafel5start',
tafel6 = 'tafel6start',
tafel7 = 'tafel7start',
tafel8 = 'tafel8start'
)
# time in seconds topics.
timeTopics = dict(
tafel1 = 'tafel1uren',
tafel2 = 'tafel2uren',
tafel3 = 'tafel3uren',
tafel4 = 'tafel4uren',
tafel5 = 'tafel5uren',
tafel6 = 'tafel6uren',
tafel7 = 'tafel7uren',
tafel8 = 'tafel8uren'
)
# Currenttime topics.
currentTime = dict(
tafel1 = 'tafel1',
tafel2 = 'tafel2',
tafel3 = 'tafel3',
tafel4 = 'tafel4',
tafel5 = 'tafel5',
tafel6 = 'tafel6',
tafel7 = 'tafel7',
tafel8 = 'tafel8'
)
# Global timer vars
tim1 = 0
tim2 = 0
tim3 = 0
tim4 = 0
tim5 = 0
tim6 = 0
tim7 = 0
tim8 = 0
# startbooleans
tb1start = False
tb2start = False
tb3start = False
tb4start = False
tb5start = False
tb6start = False
tb7start = False
tb8start = False
The class where all the magic happens is the class CrudeTimerGrid().
How can I make it so my timer won't reset everytime I click on my Resume button?
Edit: managed to fix my problem!
I made an event(self.event = Clock.schedule_interval(self.tick,1)) and have 2 buttons to pause and resume.
I use the pause button (Clock.unschedule(self.event)) to unschedule the event and the resume button (Clock.schedule_once(self.event)) to reschedule my timer.
Upvotes: 0
Views: 216
Answers (1)
ikolim
Reputation: 16001
You won't be able to unschedule a Kivy Clock event by using Clock.unschedule(self.tick). Please refer to the example below.
Schedule
Replace
Clock.schedule_interval(self.tick, 1)
with
self.event = Clock.schedule_interval(self.tick, 1)
Unschedule
so that you can unschedule using either
self.event.cancel()
or
Clock.unschedule(self.event)
Upvotes: 2
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