get_md5_file_gui.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

__author__ = "ipetrash"


"""
Скрипт оконной программы, которая показывает контрольную сумму файлов, кинутых на нее через drag-and-drop.

"""


import traceback
import sys

from datetime import datetime

try:
    from PyQt5.QtWidgets import (
        QApplication,
        QMainWindow,
        QLabel,
        QMessageBox,
        QWidget,
        QFormLayout,
        QVBoxLayout,
        QCheckBox,
    )
    from PyQt5.QtCore import Qt

except:
    from PyQt4.QtGui import (
        QApplication,
        QMainWindow,
        QLabel,
        QMessageBox,
        QWidget,
        QFormLayout,
        QVBoxLayout,
        QCheckBox,
    )
    from PyQt4.QtCore import Qt


from get_md5_file import md5sum


def log_uncaught_exceptions(ex_cls, ex, tb):
    text = f"{ex_cls.__name__}: {ex}:\n"
    text += "".join(traceback.format_tb(tb))

    ts = datetime.today().timestamp()
    with open(f"error_text_{ts}", "w", encoding="utf-8") as f:
        f.write(text)

    QMessageBox.critical(None, "Error", text)
    sys.exit(1)


sys.excepthook = log_uncaught_exceptions


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

        self.setWindowTitle("get_md5_file_gui")
        self.setAcceptDrops(True)

        self.label_file_name = QLabel()
        self.label_file_name.setTextInteractionFlags(Qt.TextSelectableByMouse)
        self.label_file_name.setWordWrap(True)

        self.label_md5 = QLabel()
        self.label_md5.setTextInteractionFlags(Qt.TextSelectableByMouse)

        self.checkbox_copy_md5_to_clipboard = QCheckBox(
            "After drop copy md5 to clipboard"
        )
        self.checkbox_copy_md5_to_clipboard.setChecked(False)

        label_file_name_label = QLabel("File name:")
        label_file_name_label.setAlignment(Qt.AlignTop | Qt.AlignLeft)

        layout = QFormLayout()
        layout.addRow(label_file_name_label, self.label_file_name)
        layout.addRow("MD5:", self.label_md5)

        main_layout = QVBoxLayout()
        main_layout.addWidget(QLabel("Drag and drop the file:"))
        main_layout.addLayout(layout)
        main_layout.addStretch()
        main_layout.addWidget(self.checkbox_copy_md5_to_clipboard)

        central_widget = QWidget()
        central_widget.setLayout(main_layout)

        self.setCentralWidget(central_widget)

    def dragEnterEvent(self, event):
        mime = event.mimeData()
        if mime.hasUrls() and len(mime.urls()) == 1:
            event.acceptProposedAction()

    def dropEvent(self, event):
        url = event.mimeData().urls()[0]
        file_name = url.toLocalFile()
        md5_hex = md5sum(file_name)

        self.label_file_name.setText(file_name)
        self.label_md5.setText(md5_hex)

        # Копирование md5 в буфер обмена
        if self.checkbox_copy_md5_to_clipboard.isChecked():
            clipboard = QApplication.instance().clipboard()
            clipboard.setText(md5_hex)

        return super().dropEvent(event)


if __name__ == "__main__":
    app = QApplication([])

    w = MainWindow()
    w.show()

    app.exec()