我正在 python 和 pyqt 上构建一个 GUI。GUI 有很多按钮，通过 LED 类生成，这意味着每个 LED 有 3 个按钮，用于 n 个 LED。
在一些按钮中，我想要一个改变按钮不透明度的效果，在从 0 到 1 的循环中，然后再返回，所以它会消失并出现。我只需要一个进程来管理所有，因此每个按钮的效果同时开始，并且同时闪烁。
我已经设法通过线程中的 qgraphicseffect 遍历列表来实现这一点。问题是几分钟后，效果停止了，尽管线程仍在运行（print（opacity_level））。具有效果的按钮越多，持续时间就越短。单击任何按钮，即使是其他没有效果的按钮，都会重新启动 gui 动画。
我对 pyqt 线程的小研究使我实现了这个线程管理器，尽管我并不完全理解它。
class WorkerSignals(QtCore.QObject):
finished = QtCore.pyqtSignal()
error = QtCore.pyqtSignal(tuple)
result = QtCore.pyqtSignal(object)
progress = QtCore.pyqtSignal(tuple)
class Worker(QtCore.QRunnable):
'''
Worker thread
Inherits from QRunnable to handler worker thread setup, signals and wrap-up.
'''
def __init__(self, fn, *args, **kwargs):
super(Worker, self).__init__()
# Store constructor arguments (re-used for processing)
self.fn = fn
self.args = args
self.kwargs = kwargs
self.signals = WorkerSignals()
# Add the callback to our kwargs
self.kwargs['progress_callback'] = self.signals.progress
@pyqtSlot()
def run(self):
'''
Initialise the runner function with passed args, kwargs.
'''
# Retrieve args/kwargs here; and fire processing using them
try:
result = self.fn(*self.args, **self.kwargs)
except:
traceback.print_exc()
exctype, value = sys.exc_info()[:2]
self.signals.error.emit((exctype, value, traceback.format_exc()))
else:
self.signals.result.emit(result) # Return the result of the processing
finally:
self.signals.finished.emit() # Done
接下来是leds课
class LEDs:
def __init__(self,name,group,frame):
self.opacity_effect = QtWidgets.QGraphicsOpacityEffect()
self.button_auto = QtWidgets.QPushButton()
self.button_auto.setObjectName("button_auto_neutral")
self.button_auto.clicked.connect(lambda state, x=self: self.AutoMode())
def AutoMode(self):
print(self.name,"Automode")
if len(settings.blink) ==0: # start thread only if no previous thread, both thread and
this reference the size of settings.blink, so not ideal.
print("start thread")
settings.ledAutomode()
settings.blink.append(self)
最后是设置类，它具有执行动作效果的线程。还有第二个线程，它处理按钮的图标，相应地带有一个时间表。
class Settings:
def __init__(self):
self.blink=[]
def ledAutomode(self):
def blink(progress_callback):
print("opacity")
op_up=[x/100 for x in range(0,101,5)]
op_down=op_up[::-1]; op_down=op_down[1:-1]; opacity=op_up+op_down
while len(self.blink) !=0:
for i in opacity:
print(i)
QtCore.QThread.msleep(80)
for led in self.blink:
led.opacity_effect.setOpacity(i)
def timeCheck(progress_callback):
while len(self.blink) != 0:
QtCore.QThread.msleep(500)
for led in self.blink:
matrix = [v for v in settings.leds_config[led.group][led.name]["Timetable"]]
matrix_time=[]
...
# some code
...
if sum(led_on_time):
led.button_auto.setObjectName("button_auto_on")
led.button_auto.setStyleSheet(ex.stylesheet)
else:
led.button_auto.setObjectName("button_auto_off")
led.button_auto.setStyleSheet(ex.stylesheet)
QtCore.QThread.msleep(int(30000/len(self.blink)))
worker = Worker(blink) # Any other args, kwargs are passed to the run function
ex.threadpool.start(worker)
worker2 = Worker(timeCheck) # Any other args, kwargs are passed to the run function
ex.threadpool.start(worker2)
所以，可能是对 qgraphicseffect 的限制，或者线程有问题（尽管它一直在打印），或者我犯了一些错误。
我读过关于子类化 qgraphicseffect 但我不知道这是否能解决问题。如果有人有其他实现，总是渴望学习。
感谢您的时间。