源码请点赞关注收藏后评论区留言或私信博主要
程序运行结果如下
可以通过调节边距来放缩二维码大小
点击保存二维码后弹出保存文件路径
代码分为以下几个模块 1：二维码图形界面模块
def __init__(self, parent=None): super().__init__() self.setFixedSize(600, 400) self.setWindowTitle('二维码生成器-ljl') self.grid = QGridLayout() # 定义组件 # --Label self.content_label = QLabel('内容:') self.size_label = QLabel('尺寸:') self.version_label = QLabel('版本:') self.margin_label = QLabel('边距:') self.rendering_label = QLabel('效果:') self.show_label = QLabel() # 使得图片可缩放 self.show_label.setScaledContents(True) # 显示时的最大尺寸 self.show_label.setMaximumSize(200, 200) # --输入框 self.content_edit = QLineEdit() self.content_edit.setText('微信公众号:ljl') # --按钮 self.generate_button = QPushButton('生成二维码') self.save_button = QPushButton('保存二维码') # --下拉框 self.version_combobox = QComboBox() for i in range(1, 41): self.version_combobox.addItem('%s' % str(i)) self.size_combobox = QComboBox() for i in range(8, 40, 2): self.size_combobox.addItem('%s * %s' % (str(i*29), str(i*29))) # --微调框 self.margin_spinbox = QSpinBox() # 布局 # 数字依次对应行, 列, 行数和列数 self.grid.addWidget(self.rendering_label, 0, 0, 1, 1) self.grid.addWidget(self.show_label, 0, 0, 5, 5) self.grid.addWidget(self.content_label, 0, 5, 1, 1) self.grid.addWidget(self.content_edit, 0, 6, 1, 3) self.grid.addWidget(self.version_label, 1, 5, 1, 1) self.grid.addWidget(self.version_combobox, 1, 6, 1, 1) self.grid.addWidget(self.size_label, 2, 5, 1, 1) self.grid.addWidget(self.size_combobox, 2, 6, 1, 1) self.grid.addWidget(self.margin_label, 3, 5, 1, 1) self.grid.addWidget(self.margin_spinbox, 3, 6, 1, 1) self.grid.addWidget(self.generate_button, 4, 5, 1, 2) self.grid.addWidget(self.save_button, 5, 5, 1, 2) self.setLayout(self.grid) self.generate_button.clicked.connect(self.genQrcode) self.save_button.clicked.connect(self.saveQrcode) self.margin_spinbox.valueChanged.connect(self.genQrcode) self.genQrcode()
2：生成二维码模块
def genQrcode(self): content = self.content_edit.text() try: margin = int(self.margin_spinbox.text()) except: margin = 0 size = int(self.size_combobox.currentText().split('*')[0]) qr = qrcode.QRCode(version=1, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=size//29, border=margin) qr.add_data(content) self.qr_img = qr.make_image() fp = io.BytesIO() self.qr_img.save(fp, 'BMP') qimg = QtGui.QImage() qimg.loadFromData(fp.getvalue(), 'BMP') qimg_pixmap = QtGui.QPixmap.fromImage(qimg) self.show_label.setPixmap(qimg_pixmap)
3：保存二维码模块
def saveQrcode(self): filename = QFileDialog.getSaveFileName(self, '保存', './qrcode.png', '所有文件(*)') if filename[0] != '': self.qr_img.save(filename[0]) QDialog().show()
代码整合后如下
import io import sys import qrcode from PyQt5 import QtWidgets, QtGui from PyQt5.QtWidgets import QApplication, QGridLayout, QLabel, QLineEdit, QPushButton, QComboBox, QSpinBox, QFileDialog, QDialog #pyqt5制作界面常用 '''Demo''' #图形界面的类 class qrcodeGUI(QtWidgets.QWidget): def __init__(self, parent=None): super().__init__() self.setFixedSize(600, 400) self.setWindowTitle('二维码生成器-ljl') self.grid = QGridLayout() # 定义组件 # --Label self.content_label = QLabel('内容:') self.size_label = QLabel('尺寸:') self.version_label = QLabel('版本:') self.margin_label = QLabel('边距:') self.rendering_label = QLabel('效果:') self.show_label = QLabel() # 使得图片可缩放 self.show_label.setScaledContents(True) # 显示时的最大尺寸 self.show_label.setMaximumSize(200, 200) # --输入框 self.content_edit = QLineEdit() self.content_edit.setText('微信公众号:ljl') # --按钮 self.generate_button = QPushButton('生成二维码') self.save_button = QPushButton('保存二维码') # --下拉框 self.version_combobox = QComboBox() for i in range(1, 41): self.version_combobox.addItem('%s' % str(i)) self.size_combobox = QComboBox() for i in range(8, 40, 2): self.size_combobox.addItem('%s * %s' % (str(i*29), str(i*29))) # --微调框 self.margin_spinbox = QSpinBox() # 布局 # 数字依次对应行, 列, 行数和列数 self.grid.addWidget(self.rendering_label, 0, 0, 1, 1) self.grid.addWidget(self.show_label, 0, 0, 5, 5) self.grid.addWidget(self.content_label, 0, 5, 1, 1) self.grid.addWidget(self.content_edit, 0, 6, 1, 3) self.grid.addWidget(self.version_label, 1, 5, 1, 1) self.grid.addWidget(self.version_combobox, 1, 6, 1, 1) self.grid.addWidget(self.size_label, 2, 5, 1, 1) self.grid.addWidget(self.size_combobox, 2, 6, 1, 1) self.grid.addWidget(self.margin_label, 3, 5, 1, 1) self.grid.addWidget(self.margin_spinbox, 3, 6, 1, 1) self.grid.addWidget(self.generate_button, 4, 5, 1, 2) self.grid.addWidget(self.save_button, 5, 5, 1, 2) self.setLayout(self.grid) self.generate_button.clicked.connect(self.genQrcode) self.save_button.clicked.connect(self.saveQrcode) self.margin_spinbox.valueChanged.connect(self.genQrcode) self.genQrcode() '''生成二维码''' def genQrcode(self): content = self.content_edit.text() try: margin = int(self.margin_spinbox.text()) except: margin = 0 size = int(self.size_combobox.currentText().split('*')[0]) qr = qrcode.QRCode(version=1, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=size//29, border=margin) qr.add_data(content) self.qr_img = qr.make_image() fp = io.BytesIO() self.qr_img.save(fp, 'BMP') qimg = QtGui.QImage() qim filename = QFileDialog.getSaveFileName(self, '保存', './qrcode.png', '所有文件(*)') if filename[0] != '': self.qr_img.save(filename[0]) QDialog().show() if __name__ == '__main__': gui.show() sys.exit(app.exec_())
