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pyqt 发射接收信号

翻页控件：

一、定义并发射信号：

  1 #!/usr/bin/python
  2 # #coding=utf-8
  3 # __author__=''
  4 
  5 
  6 from PyQt4.QtCore import *
  7 from PyQt4.QtGui import *
  8 
  9 import pageItem_ui
 10 
 11 
 12 class pageItem(QWidget):
 13     # 定义信号
 14     emit_page_changed = pyqtSignal(int, int)
 15 
 16     def __init__(self, parent=None):
 17         QWidget.__init__(self, parent)
 18         self.ui = pageItem_ui.Ui_Form()
 19 
 20         self.page_num = 1
 21         self.page_rows = 50
 22         self.total_page = 0
 23         self.init_ui()
 24         self.init_ui_data()
 25 
 26     def init_ui(self):
 27         self.setObjectName('pageItem')
 28         self.ui.setupUi(self)
 29         self.setStyleSheet("QComboBox QAbstractItemView::item{height:25px;}")
 30         self.ui.comboBox_show_page_num.setView(QListView())
 31 
 32         regExp = QRegExp('^[1-9][0-9]*$')
 33         self.ui.comboBox_show_page_num.setValidator(QIntValidator(1, 999, self))
 34         self.ui.lineEdit_jump_page.setValidator(QRegExpValidator(regExp, self))
 35 
 36         self.connect(self.ui.pushButton_jump, SIGNAL('clicked()'), self.slot_pushButton_jump_clicked)
 37         self.connect(self.ui.pushButton_per_page, SIGNAL('clicked()'), self.slot_pushButton_per_clicked)
 38         self.connect(self.ui.pushButton_next_page, SIGNAL('clicked()'), self.slot_pushButton_next_clicked)
 39 
 40 
 41     def init_ui_data(self):
 42         self.setPageNum(1)
 43 
 44     def slot_pushButton_jump_clicked(self):
 45         # 获取跳转数据
 46         try:
 47             page_jump_num = self.ui.lineEdit_jump_page.text().toInt()[0]
 48             if page_jump_num > self.total_page or page_jump_num < 1:
 49                 return
 50             self.setPageNum(page_jump_num)
 51             self.emit_page_changed.emit(self.pageRows(), self.pageNum())
 52         except Exception,e:
 53             print str(e)
 54 
 55     def slot_pushButton_per_clicked(self):
 56         '''
 57         上一页
 58         :return:
 59         '''
 60 
 61         pageNum = self.pageNum() - 1
 62 
 63         if pageNum < 0:
 64             return
 65 
 66         self.setPageNum(pageNum)
 67 
 68         self.emit_page_changed.emit(self.pageRows(), self.pageNum())
 69 
 70     def slot_pushButton_next_clicked(self):
 71         '''
 72         下一页
 73         :return:
 74         '''
 75         pageNum = self.pageNum() + 1
 76         if pageNum > self.total_page:
 77             return
 78         self.setPageNum(pageNum)
 79 
 80         self.emit_page_changed.emit(self.pageRows(), self.pageNum())
 81 
 82     def pageRows(self):
 83         '''
 84         获取当前每页显示行数
 85         :return 行数:
 86         '''
 87         pageRows = self.ui.comboBox_show_page_num.currentText().toInt()[0]
 88         if pageRows <= 0:
 89             pageRows = 50
 90         self.page_rows = pageRows
 91         return pageRows
 92 
 93     def pageNum(self):
 94         '''
 95         获取当前显示页数
 96         :return:
 97         '''
 98         return self.page_num
 99 
100     def setPageNum(self, pageNum):
101         '''
102         设置页数
103         :param pageNum:
104         :return:
105         '''
106         if pageNum <= 0:
107             pageNum = 1
108         self.page_num = pageNum
109         self.ui.lineEdit_jump_page.setText(QString.number(pageNum))
110 
111     def setTotalRows(self, total):
112         '''
113         设置总行数
114         :param total:
115         :return:
116         '''
117 
118         if total < 0:
119             total = 0
120 
121         pagetotal = total/self.page_rows
122         if (total%self.page_rows) != 0:
123             pagetotal += 1
124 
125         self.total_page = pagetotal
126 
127         strPageNum = QString.number(pagetotal)
128         self.ui.label_total_page_num.setText(strPageNum)
129 if __name__ == '__main__':
130     print QString.number(1888)

一、接收信号：

# 接收信号
self.ui.widget_page.emit_page_changed.connect(self.slot_pageChanged)
self.ui.widget_list_page.emit_page_changed.connect(self.slot_list_pageChanged)

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原文地址：https://www.cnblogs.com/haoxr/p/5773456.html