Re: [Pythoncard-users] Pythoncard - gauge component.

[Alex T. <al...@tw...>]

Robert Pieczonka wrote:

> Hello.
>
> I'd to use gauge component in the code below. I want to show 
> Queue.quantity in  gauge (during running thread, every time when it 
> changed). I don't know which event i must use. I find some info about 
> Time event for gauge but don't understand how it works. Any suggestions?
>
The only events that a gauge will get (by default) are mouse events when 
the user clicks in, or moves over the gauge. I don't think you are 
interested in those - you simply want a timed event and want to update 
the gauge at that point in time.

Assuming hat's right - see code added below.

>
> #---gauge.rcrc.py---
>
> {'application':{'type':'Application',
>          'name':'Template',
>    'backgrounds': [
>    {'type':'Background',
>          'name':'GaugeTest',
>          'size':(187, 147),
>
>         'components': [
>
> {'type':'Gauge',
>    'name':'gauge',
>    'position':(4, 10),
>    'size':(156, 28),
>    'foregroundColor':(248, 29, 67),
>    'layout':'horizontal',
>    'max':100,
>    'value':0,
>    },
>
> {'type':'Button',
>    'name':'startbtn',
>    'position':(5, 44),
>    'label':'record',
>    },
> ] }] } }
> #---------------------------
>
>
> #--------gauge.py----------------------
> from threading import Thread
> from threading import Condition
> import time
>
> class Queue:
>    def __init__(self):
>        self.quantity=0
>
>    def produce(self):
>        self.quantity+=1
>
>    def consume(self):
>        self.quantity-=1
>          def isEmpty(self):
>        return not self.quantity
>
> class Prod(Thread):
>    def __init__(self, queue, cond):
>        Thread.__init__(self)
>        self.queue=queue
>        self.cond=cond
>          def run(self):
>        while 1:
>            self.cond.acquire()
>            self.queue.produce()
>            print "Producer produce(1),  quantity:",self.queue.quantity
>            self.cond.notifyAll()
>            self.cond.release()
>            time.sleep(1)
>   class Cons(Thread):
>    def __init__(self, queue, cond):
>        Thread.__init__(self)
>        self.queue=queue
>        self.cond=cond
>          def run(self):
>        while 1:
>            time.sleep(2)
>            self.cond.acquire()
>            while self.queue.isEmpty():
>                print "     >>>Quantity: 0. I'm waiting."
>                self.cond.wait()
>                          self.queue.consume()
>            print "     >>>Consumer consume(1), quantity:", 
> self.queue.quantity
>            self.cond.release()
>          
> from PythonCard import model
> class PythonCardWin(model.Background):
>    def on_initialize(self,event):
>        self.q=Queue()
>        self.c=Condition()
>        self.p=Prod(self.q,self.c)
>        self.c=Cons(self.q,self.c)

       self.timer = timer.Timer(self.components.gauge, -1)

>
>    def on_startbtn_mouseClick(self,event):
>        self.p.start()
>        self.c.start()

      self.timer.start(100)   # number of millisecs for timer frequency

>
>    def on_gauge_???????(self, event):      <---------------- look here

def on_gauge_timer(self, event):
       self.components.gauge.value = ????  # whatever value you need. 
range is 0 to self.components.gauge.max
                                                               #  max 
can be set in resourceEditor, or by script
       # just to show how to do it
       if ????:
           self.timer.stop()

>          
> if __name__ == '__main__':
>    app = model.Application(PythonCardWin)
>    app.MainLoop()
>
I'll try to come up with some reason to add a gauge to one of the 
samples (or with a new sample to demonstrate the gauge). If anyone has 
suggestions - or any other component type that needs a sample to 
demonstrate it - please tell me.

-- 
Alex Tweedly       http://www.tweedly.net




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