Project/出口引导节点/test.py

import sys, math
from typing import Any, List
from PyQt5 import QtCore, QtWidgets


# 分页listWidget控件,单选
class PageListWidget(QtWidgets.QWidget):
    sinout_signal = QtCore.pyqtSignal(str)

    def __init__(self):
        super().__init__()
        self.init_data()
        self.init_ui()
        pass

    def init_data(self):
        self.ori_data_list: List[Any] = []
        self.single_page_count: int = 50
        self.total_page_count: int = 0
        self.total_row_count: int = 0
        self.current_page_number: int = 1
        pass

    def init_ui(self):
        pre_btn = QtWidgets.QPushButton('<<')
        pre_btn.clicked.connect(self.pre_btn_clicked)
        self.page_line = QtWidgets.QSpinBox()
        go_btn = QtWidgets.QPushButton('前往')
        go_btn.clicked.connect(self.go_btn_clicked)
        next_btn = QtWidgets.QPushButton('>>')
        next_btn.clicked.connect(self.next_btn_clicked)

        self.total_page_label = QtWidgets.QLabel('共0页')
        self.total_row_label = QtWidgets.QLabel('共0条')
        self.current_page_label = QtWidgets.QLabel('第1页')

        layout_top = QtWidgets.QHBoxLayout()
        layout_top.addWidget(pre_btn)
        layout_top.addWidget(self.page_line)
        layout_top.addWidget(go_btn)
        layout_top.addWidget(next_btn)
        layout_top.addWidget(self.total_page_label)
        layout_top.addWidget(self.total_row_label)
        layout_top.addWidget(self.current_page_label)
        layout_top.addStretch(1)

        self.content_list_widget = QtWidgets.QListWidget()
        self.content_list_widget.setSelectionMode(QtWidgets.QAbstractItemView.SingleSelection)
        self.content_list_widget.itemClicked.connect(self.content_list_widget_itemClicked)

        layout = QtWidgets.QVBoxLayout()
        layout.addLayout(layout_top)
        layout.addWidget(self.content_list_widget)
        self.setLayout(layout)
        pass

    def first_set_data(self, data: List[Any]):
        self.ori_data_list = data
        self.total_row_count = len(data)
        self.total_page_count = math.ceil(self.total_row_count / self.single_page_count)
        self.current_page_number = 1
        self.page_line.setRange(1, self.total_page_count)

        self.total_row_label.setText(f" 共{self.total_row_count}条")
        self.total_page_label.setText(f" 共{self.total_page_count}页")
        self.change_page()
        pass

    def set_current_page_label(self):
        self.current_page_label.setText(f' 第{self.current_page_number}页')
        pass

    def change_page(self):
        start_dot = (self.current_page_number - 1) * self.single_page_count
        end_dot = start_dot + self.single_page_count
        current_data = self.ori_data_list[start_dot:end_dot]
        self.content_list_widget.clear()
        self.content_list_widget.addItems(current_data)
        self.set_current_page_label()
        pass

    def pre_btn_clicked(self):
        '''前一页点击'''
        if self.current_page_number <= 1:
            QtWidgets.QMessageBox.information(
                self,
                '提示',
                '已经是首页',
                QtWidgets.QMessageBox.Yes
            )
            return
        self.current_page_number -= 1
        self.change_page()
        pass

    def go_btn_clicked(self):
        '''前往按钮单击'''
        go_page = self.page_line.value()
        go_page_int = int(go_page)
        if go_page_int <= 0 or go_page_int > self.total_page_count:
            QtWidgets.QMessageBox.information(
                self,
                '提示',
                '输入的页码超出范围',
                QtWidgets.QMessageBox.Yes
            )
            return
        self.current_page_number = go_page
        self.change_page()
        pass

    def next_btn_clicked(self):
        '''下一页单击'''
        if self.current_page_number >= self.total_page_count:
            QtWidgets.QMessageBox.information(
                self,
                '提示',
                '已经在末页',
                QtWidgets.QMessageBox.Yes
            )
            return
        self.current_page_number += 1
        self.change_page()
        pass

    def content_list_widget_itemClicked(self, cur_item: QtWidgets.QListWidgetItem):
        cur_text = cur_item.text()
        self.sinout_signal.emit(cur_text)
        pass

# 该方法用于接收单选事件发出的信息
def show_selected_str(selected_str: str):
    print('当前选中:', selected_str)

if __name__ == '__main__':
    with open('test.tst', 'r', encoding='utf-8') as fr:
        temp_list = fr.readlines()
    final_list = [item.strip() for item in temp_list]

    app = QtWidgets.QApplication(sys.argv)
    t_win = PageListWidget()
    t_win.sinout_signal.connect(show_selected_str)
    t_win.show()
    t_win.first_set_data(final_list)
    sys.exit(app.exec_())
    pass