Python生成二维码图片 制作带logo和背景的二维码 可视化界面

from PyQt5.QtWidgets import * from PyQt5.QtCore import * from PyQt5.QtGui import * import qrcode import cv2 import numpy as np from widgets import * class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("二维码生成器") self.setMinimumSize(600, 800) self.widget = QWidget() self.setCentralWidget(self.widget) self.layout = QGridLayout() self.widget.setLayout(self.layout) self.bg_selector = FileSelector("背景图片") self.layout.addWidget(self.bg_selector, 0, 0, 1, 1) self.logo_selector = FileSelector("Logo") self.layout.addWidget(self.logo_selector, 0, 1, 1, 1) self.text_edit = QRCodeTextEdit() self.layout.addWidget(self.text_edit, 1, 0, 1, 2) self.bar = QRCodeGeneratorBar() self.layout.addWidget(self.bar, 2, 0, 1, 2) self.preview = QLabel() self.preview.setFixedHeight(350) self.preview.setScaledContents(True) self.preview.setStyleSheet("border: 1px solid black") self.layout.addWidget(self.preview, 3, 0, 1, 2) # 默认输入 self.bg_selector.text.setText("./imgs/bg.png") self.bg_selector.show_img() self.logo_selector.text.setText("./imgs/logo.png") self.logo_selector.show_img() self.text_edit.text.setText("https://blog.csdn.net/") self.generate_qrcode() # 事件 self.bar.button.clicked.connect(self.generate_qrcode) def generate_qrcode(self): ''' 根据设置生成二维码 ''' # 背景图片 bg_path = self.bg_selector.text.text() # 背景图片路径 bg_img = cv2.imread(bg_path) # 读取图片 bg_min_size = min(bg_img.shape[:2]) # 获取最小边长 bg_center = (bg_img.shape[0]//2, bg_img.shape[1]//2) # 获取图片中心坐标 # 二维码图片 text = self.text_edit.text.toPlainText() # 二维码文本 qrcode_ratio = float(self.bar.line_edit1.text()) # 二维码与背景图片比例 qrcode_size = round(bg_min_size*qrcode_ratio) # 计算二维码边长 qrcode_img = qrcode.make(text) # 生成二维码 qrcode_img = np.array(qrcode_img, dtype=np.uint8) *255 # 转换为numpy类型 qrcode_img = cv2.merge([qrcode_img, qrcode_img, qrcode_img]) # 转换为BGR格式 qrcode_img = cv2.resize(qrcode_img, (qrcode_size, qrcode_size)) # 调整二维码大小 # Logo图片 logo_path = self.logo_selector.text.text() # Logo图片路径 logo_ratio = float(self.bar.line_edit2.text()) # Logo与二维码比例 logo_size = round(qrcode_size*logo_ratio) # 计算Logo边长 logo_img = cv2.imread(logo_path) # 读取图片 logo_img = cv2.resize(logo_img, (logo_size, logo_size)) # 调整Logo大小 # 合成图片 result = bg_img result[bg_center[0]-qrcode_size//2:bg_center[0]-qrcode_size//2+qrcode_size, bg_center[1]-qrcode_size//2:bg_center[1]-qrcode_size//2+qrcode_size] = qrcode_img result[bg_center[0]-logo_size//2:bg_center[0]-logo_size//2+logo_size, bg_center[1]-logo_size//2:bg_center[1]-logo_size//2+logo_size] = logo_img cv2.imwrite("./result.png", result) # 保存图片 # 显示图片 result = cv2.cvtColor(result, cv2.COLOR_BGR2RGB) result = QImage(result, result.shape[1], result.shape[0], result.shape[1] * 3, QImage.Format_RGB888) self.preview.setFixedWidth(round(result.width()/result.height()*self.preview.height())) self.preview.setPixmap(QPixmap(result)) if __name__ == "__main__": app = QApplication([]) win = MainWindow() win.show() app.exec_()