更新Popup.Animated以播放gif，直到完成外部任务(PYSimpleGUI) [英] Updating Popup.Animated to play gif until external task is completed (PYSimpleGUI)

问题描述

我正在寻求创建一个UI，该UI在执行另一项任务时显示动画弹出窗口.该操作将在完成后退出.我正在使用PYSimpleGUI，并在此处中列出的示例>为我的工作打下基础.启动代码后，我可以显示动画的一帧，并在完成任务后退出，但无法播放整个gif.代码:

I am looking to create a UI that displays an animated popup while another task is being carried out. That will exit upon completion. I am using PYSimpleGUI and am using the example listed here to base my work off. I can get a single frame of the animation to display once I start the code and exit upon completion of the task but can't get it to play the entire gif. Code:

    import queue
    import threading
    import time
    import PySimpleGUI as sg

    # ############################# User callable CPU intensive code #############################
    # Put your long running code inside this "wrapper"
    # NEVER make calls to PySimpleGUI from this thread (or any thread)!
    # Create one of these functions for EVERY long-running call you want to make

    def long_function_wrapper(work_id, gui_queue):
      # LOCATION 1
      # this is our "long running function call"
      #time.sleep(10)  # sleep for a while as a simulation of a long-running computation

     x = 0
     while True:
         print(x)
         time.sleep(0.5)
         x = x + 1
         if x == 5: 
            break



    # at the end of the work, before exiting, send a message back to the GUI indicating end
    gui_queue.put('{} ::: done'.format(work_id))
    # at this point, the thread exits
    return

    def the_gui():
    gui_queue = queue.Queue()  # queue used to communicate between the gui and long-running code

    layout = [[sg.Text('Multithreaded Work Example')],
              [sg.Text('This is a Test.', size=(25, 1), key='_OUTPUT_')],
              [sg.Button('Go'), sg.Button('Exit')], ]



    window = sg.Window('Multithreaded Window').Layout(layout)


    # --------------------- EVENT LOOP ---------------------
    work_id = 0
    while True:
        event, values = window.Read(timeout=100)  # wait for up to 100 ms for a GUI event

        if event is None or event == 'Exit':
            #sg.PopupAnimated(None)
            break
        if event == 'Go':           # clicking "Go" starts a long running work item by starting thread
            window.Element('_OUTPUT_').Update('Starting long work %s'%work_id)


            # LOCATION 2
            # STARTING long run by starting a thread
            thread_id = threading.Thread(target=long_function_wrapper, args=(work_id, gui_queue,), daemon=True)
            thread_id.start()
            #for i in range(200000):

            work_id = work_id+1 if work_id < 19 else 0

            #while True:
            sg.PopupAnimated(sg.DEFAULT_BASE64_LOADING_GIF, background_color='white', time_between_frames=100)    
                #if message == None:
                    #break   
        # --------------- Read next message coming in from threads ---------------
        try:
            message = gui_queue.get_nowait()    # see if something has been posted to Queue

        except queue.Empty:                     # get_nowait() will get exception when Queue is empty
            message = None                      # nothing in queue so do nothing


        # if message received from queue, then some work was completed
        if message is not None:
            # LOCATION 3
            # this is the place you would execute code at ENDING of long running task
            # You can check the completed_work_id variable to see exactly which long-running function completed
            completed_work_id = int(message[:message.index(' :::')])
            sg.PopupAnimated(None)


        #window['_GIF_'].update_animation(sg.DEFAULT_BASE64_LOADING_GIF, time_between_frames=100)
        #window.read(timeout = 1000)

    # if user exits the window, then close the window and exit the GUI func
    window.Close()

    ############################# Main #############################

    if __name__ == '__main__':
        the_gui()
        print('Exiting Program'

)

推荐答案

您已经在仅执行一次的"if"语句中调用了popup_animated.

You've got your call to popup_animated inside of an "if" statement that is only executed once.

您必须为要显示的每个帧调用popup_animated.它不是作为在后台工作的任务而衍生出来的.

You must call popup_animated for every frame you wish to show. It's not spun off as a task that works in the background.

对代码的这一更改将使动画在后台任务运行期间一直持续下去.

This change to your code will keep the animation going as long as there as background tasks running.

import queue
import threading
import time
import PySimpleGUI as sg


# ############################# User callable CPU intensive code #############################
# Put your long running code inside this "wrapper"
# NEVER make calls to PySimpleGUI from this thread (or any thread)!
# Create one of these functions for EVERY long-running call you want to make

def long_function_wrapper(work_id, gui_queue):
    # LOCATION 1
    # this is our "long running function call"
    # time.sleep(10)  # sleep for a while as a simulation of a long-running computation

    x = 0
    while True:
        print(x)
        time.sleep(0.5)
        x = x + 1
        if x == 5:
            break
    # at the end of the work, before exiting, send a message back to the GUI indicating end
    gui_queue.put('{} ::: done'.format(work_id))
    # at this point, the thread exits
    return


def the_gui():


    gui_queue = queue.Queue()  # queue used to communicate between the gui and long-running code

    layout = [[sg.Text('Multithreaded Work Example')],
              [sg.Text('This is a Test.', size=(25, 1), key='_OUTPUT_')],
              [sg.Text(size=(25, 1), key='_OUTPUT2_')],
              [sg.Button('Go'), sg.Button('Exit')], ]

    window = sg.Window('Multithreaded Window').Layout(layout)

    # --------------------- EVENT LOOP ---------------------
    work_id = 0
    while True:
        event, values = window.Read(timeout=100)  # wait for up to 100 ms for a GUI event

        if event is None or event == 'Exit':
            # sg.PopupAnimated(None)
            break
        if event == 'Go':  # clicking "Go" starts a long running work item by starting thread
            window.Element('_OUTPUT_').Update('Starting long work %s' % work_id)
            # LOCATION 2
            # STARTING long run by starting a thread
            thread_id = threading.Thread(target=long_function_wrapper, args=(work_id, gui_queue,), daemon=True)
            thread_id.start()
            # for i in range(200000):

            work_id = work_id + 1 if work_id < 19 else 0

            # while True:
            # if message == None:
            # break
        # --------------- Read next message coming in from threads ---------------
        try:
            message = gui_queue.get_nowait()  # see if something has been posted to Queue
        except queue.Empty:  # get_nowait() will get exception when Queue is empty
            message = None  # nothing in queue so do nothing
        # if message received from queue, then some work was completed
        if message is not None:
            # LOCATION 3
            # this is the place you would execute code at ENDING of long running task
            # You can check the completed_work_id variable to see exactly which long-running function completed
            completed_work_id = int(message[:message.index(' :::')])
            window.Element('_OUTPUT2_').Update('Finished long work %s' % completed_work_id)
            work_id -= 1
            if not work_id:
                sg.PopupAnimated(None)

        if work_id:
            sg.PopupAnimated(sg.DEFAULT_BASE64_LOADING_GIF, background_color='white', time_between_frames=100)

        # window['_GIF_'].update_animation(sg.DEFAULT_BASE64_LOADING_GIF, time_between_frames=100)
        # window.read(timeout = 1000)

    # if user exits the window, then close the window and exit the GUI func
    window.Close()

############################# Main #############################

if __name__ == '__main__':
    the_gui()
    print('Exiting Program')

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