使用Pyqt5制作屏幕录制界面功能

from PyQt5.QtWidgets import (QMainWindow, QApplication, QDesktopWidget, QWidget, QFrame,
                             QLabel, QPushButton, QComboBox, QCheckBox, QSpinBox, QDialog, QFileDialog, QMessageBox)
from PyQt5.QtGui import QIcon, QFont, QColor, QImage, QPixmap, QPen, QPainter
from PyQt5.QtCore import QRect, Qt, QPoint, QMetaObject, QThread  

class Ui_MainWindow(QMainWindow):
    """主体窗口设置"""
    def __init__(self):
        super().__init__()
        self.setObjectName("MainWindow")  # 设置窗口对象名称
        self.setWindowTitle('屏幕录制')    # 设置窗口标题
        self.resize(512, 352)   # 设置窗口大小
        self.setupUi()     # 设置显示部件
        self.show()        # 窗口显示
    def setipUi(self):
        # 设置窗口需要显示的部件
        # self.centralwidget = QWidget(self)  部件载体
        # self.centralwidget.setObjectName("centralwidget")
        # 标签框设置： QLabel(self.centralwidget)
        # 复选框设置： QCheckBox(self.centralwidget)
        # 按键设置：   QPushButton(self.centralwidget)
        # 调度框设置： QSpinBox(self.centralwidget)
def main():
    """运行函数"""
    app = QApplication(sys.argv)
    app.setAttribute(Qt.AA_UseHighDpiPixmaps)
    ui = Ui_MainWindow()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

class MousePaint(QDialog):
    """移动鼠标获取屏幕捕获范围"""

    def __init__(self):
        super().__init__()
        self.setMouseTracking(True)
        # 设置窗口布满整个屏幕
        self.showFullScreen()
        # 设置窗体无边框
        self.setWindowFlags(Qt.FramelessWindowHint)  # 窗口置顶，无边框
        # 设置背景透明
        self.setWindowOpacity(0.5)
        self.initUI()
        self.setFocus()
    def initUI(self):
        self.setGeometry(*(QDesktopWidget().screenGeometry()).getRect())
        self.pix = QPixmap()
        self.lastpoint = QPoint()
        self.endpoint = QPoint()
        self.pos = None
        self.bline = 0
    def mousePressEvent(self, event):
        # 监听鼠标按压事件
        if event.button() == Qt.LeftButton:
            self.lastpoint = event.x(), event.y()
            self.bline = 1
        elif event.button() == Qt.RightButton:
            self.close()
        event.accept()
    def mouseReleaseEvent(self, event):
        # 监听鼠标释放事件
        self.endpoint = event.x(), event.y()
        self.close()
    def mouseMoveEvent(self, event):
        # 监听鼠标移动事件
        if self.bline == 1:
            self.pos = event.x(), event.y()
            event.accept()
            self.update()
    def paintEvent(self, event):
        # 绘画事件
            pp = QPainter(self)
            pen = QPen()  # 定义笔格式对象
            pen.setWidth(5)  # 设置笔的宽度
            pen.setColor(QColor(255, 0, 0))
            pp.setPen(pen)
            lpx, lpy = self.lastpoint
            pp.drawRect(lpx, lpy, self.pos[0] - lpx, self.pos[1] - lpy)

from PyQt5.QtCore import QThread  # Pyqt5的QThread类
from Screenshot_record import Screenshot

class Thread_screenshot(QThread):
    def __init__(self):
        super().__init__()
        self.screen = Screenshot()  # 屏幕录制类