def QTimeToMsecs(time: QTime):
msecs = 0
msecs += time.msec()
msecs += time.second() * 1000
msecs += time.minute() * 1000 * 60
msecs += time.hour() * 1000 * 60 * 60
return msecs
class StopwatchWidget(QWidget, ClockAssets):
# widget containing stopwatch and all methods associated with it
def __init__(self):
super().__init__()
self.window_icon = "timer_assets/timer.png"
self.play_icon = "timer_assets/play.png"
self.pause_icon = "timer_assets/pause.png"
self.reset_icon = "timer_assets/reset.png"
self.stopwatch_time = QTime(0, 0, 0, 0)
self.stopwatch_is_running = False
self.stopwatch = QTimer()
self.stopwatch.timeout.connect(self.update_stopwatch)
self.init_window()
def init_window(self):
self.stopwatch_vbox = self.create_stopwatch_window()
self.setLayout(self.stopwatch_vbox)
# STOPWATCH
def create_stopwatch_window(self):
self.stopwatch_time_label = QLabel(
self.stopwatch_time.toString("hh:mm:ss.zz"))
self.stopwatch_time_label.setAlignment(Qt.AlignCenter)
self.stopwatch_time_label.setFont(QFont("Arial", 20))
self.reset_stopwatch_button = QPushButton()
self.reset_stopwatch_button.setIcon(QIcon(self.reset_icon))
self.reset_stopwatch_button.setFixedWidth(200)
self.reset_stopwatch_button.clicked.connect(self.reset_stopwatch)
self.toggle_stopwatch_button = QPushButton()
self.toggle_stopwatch_button.setIcon(QIcon(self.play_icon))
self.toggle_stopwatch_button.setFixedWidth(200)
self.toggle_stopwatch_button.clicked.connect(self.toggle_stopwatch)
self.vbox = QVBoxLayout()
self.vbox.addWidget(self.stopwatch_time_label)
self.vbox.addWidget(self.reset_stopwatch_button,
alignment=Qt.AlignHCenter)
self.vbox.addWidget(self.toggle_stopwatch_button,
alignment=Qt.AlignHCenter)
self.vbox.addSpacing(20)
return self.vbox
def display_stopwatch_time(self):
# msec displays the hundreds and tens place only
msec = str(int(self.stopwatch_time.msec() / 10))
self.stopwatch_time_label.setText(
self.stopwatch_time.toString(f"hh:mm:ss.{msec.ljust(2, '0')}"))
def toggle_stopwatch(self):
# starts stopwatch if it's not running or
# stops stopwatch if it is running
if self.stopwatch_is_running:
self.stopwatch_is_running = False
self.change_stopwatch_button_logo("play")
self.stop_stopwatch()
else:
self.stopwatch_is_running = True
self.change_stopwatch_button_logo("pause")
self.start_stopwatch()
# EFFECT
def change_stopwatch_button_logo(self, action):
# changes button logo
if action == "play":
self.toggle_stopwatch_button.setIcon(QIcon(self.play_icon))
elif action == "pause":
self.toggle_stopwatch_button.setIcon(QIcon(self.pause_icon))
def start_stopwatch(self):
# runs stopwatch
self.stopwatch.start(10)
def stop_stopwatch(self):
# stops stopwatch
self.stopwatch.stop()
def update_stopwatch(self):
# stopwatch's interval is every 10 ms so only the hundreds and tens digits are shown
self.stopwatch_time = self.stopwatch_time.addMSecs(10)
self.display_stopwatch_time()
def reset_stopwatch(self):
# resets stopwatch time to zero
self.stopwatch_time = QTime(0, 0, 0, 0)
self.display_stopwatch_time()
def qTime2float(self, qTime: QTime) -> float:
return qTime.hour() * 3600 + qTime.minute() * 60 + qTime.second(
) + qTime.msec() / 1000
class DynamicWaveView(QChartView):
def __init__(self, parent=None):
super(DynamicWaveView, self).__init__(parent)
self.time = QTime()
self.x = 0 # 横坐标值
self.ymax = 0.0 # 纵坐标最大值
self.ymin = 0.0 # 纵坐标最小值
self.lines = dict()
self.chart().legend().show()
# self.chart().addSeries(self.line)
# self.setChart(QChart())
# self.chart().setTitle("波形")
# self.chart().createDefaultAxes()
self.ax = QValueAxis()
self.ax.setTitleText("t")
self.ax.setRange(0, 10)
# self.ay = self.chart.axisY()
self.ay = QValueAxis()
self.ay.setRange(-1, 1)
self.ay.setTitleText("value")
self.chart().addAxis(self.ax, Qt.AlignBottom)
self.chart().addAxis(self.ay, Qt.AlignLeft)
# self.chart().setAnimationOptions(QChart.SeriesAnimations) # 动画
# self.setRenderHint(QPainter.Antialiasing) # 消除混叠现象，消除走样，图形保真;
def add_new_data(self, data: dict):
self.x += self.time.msec()
self.time.start()
if self.x > 10000:
self.ax.setRange(self.x - 10000, self.x)
for key in data:
try:
value = float(data[key])
except ValueError:
continue
if value > self.ymax:
self.ymax = value
self.ay.setRange(self.ymin, self.ymax)
elif value < self.ymin:
self.ymin = value
self.ay.setRange(self.ymin, self.ymax)
if key in self.lines:
if self.lines[key].__len__() >= 32:
# self.lines[key].replace(0,self.x, value)
self.lines[key].remove(0)
# else:
self.lines[key].append(self.x, value)
else:
# ls = QSplineSeries(self)
ls = QLineSeries(self)
ls.append(self.x, value)
ls.setColor(
QColor(random.randint(0, 255), random.randint(0, 255),
random.randint(0, 255)))
ls.setName(key)
self.chart().addSeries(ls)
self.chart().setAxisX(self.ax, ls)
self.chart().setAxisY(self.ay, ls)
self.lines[key] = ls
def clear(self):
self.ymax = 0
self.ymin = 0
self.lines.clear()
