PySide2进度条

作者：YXN-python 阅读量：12 发布日期：2024-11-05

import sys
from PySide2.QtWidgets import QApplication, QMainWindow, QSlider, QVBoxLayout, QWidget, QLabel
from PySide2.QtCore import Qt, QTimer, Signal


class ProgressBar(QSlider):
    progress_changed = Signal(float)  # 信号，播放进度改变时触发

    def __init__(self, duration=100.0, parent=None):
        super().__init__(Qt.Horizontal, parent)

        self.setValue(0)
        self.setFixedHeight(20)
        self.setFixedWidth(400)

        self.duration = duration
        self.current_position = 0.0
        self.is_slider_pressed = False
        self.timer = QTimer()
        self.timer.timeout.connect(self.update_progress)

        logo_color = "#3498db"
        self.setStyleSheet("""
            QSlider::handle {
                background-color: white;
                border-radius: 5px;
                width: 10px;
                margin-top: -5px;
                margin-bottom: -5px;
            }
            QSlider::groove {
                border: 1px solid #666;
                border-radius: 3px;
                background-color: %s;
                height: 6px;
            }
            QSlider::add-page {
                background-color: #ddd;
                border-radius: 3px;
            }
        """ % logo_color)

        self.sliderPressed.connect(self.on_slider_pressed)
        self.sliderReleased.connect(self.on_slider_released)

    def update_progress(self):
        if not self.is_slider_pressed and self.current_position < self.duration:
            self.current_position += 0.1
            value = (self.current_position / self.duration) * 100
            self.setValue(value)
            self.progress_changed.emit(self.current_position)
        elif self.current_position >= self.duration:
            self.timer.stop()

    def on_slider_pressed(self):
        self.is_slider_pressed = True

    def on_slider_released(self):
        self.is_slider_pressed = False
        value = self.value()
        self.current_position = (value / 100) * self.duration
        self.progress_changed.emit(self.current_position)
        print(f"当前播放位置: {self.current_position:.2f} / {self.duration}")

    def start(self):
        self.timer.start(100)


class MusicPlayer(QMainWindow):
    def __init__(self):
        super().__init__()

        self.progress_bar = ProgressBar(duration=200.0)
        self.progress_bar.progress_changed.connect(self.update_label)

        self.label = QLabel("当前进度: 0.00 / 200.00")

        layout = QVBoxLayout()
        layout.addWidget(self.progress_bar)
        layout.addWidget(self.label)

        container = QWidget()
        container.setLayout(layout)
        self.setCentralWidget(container)

    def update_label(self, position):
        self.label.setText(f"当前进度: {position:.2f} / {self.progress_bar.duration}")


if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = MusicPlayer()
    window.show()
    window.progress_bar.start()
    sys.exit(app.exec_())

YXN-python

2024-11-05