【下载文档:  python实现分页效果.txt 】

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python实现分页效果
本文实例为大家分享了python实现分页效果展示的具体代码，供大家参考，具体内容如下
难点：清空Layout
#!/usr/bin/python
#-*-coding:utf-8-*-
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class PageWidget(QWidget):
def __init__(self,parent=None):
super(PageWidget,self).__init__(parent)
self.btns=[]
self.count=0
self.presign=0 #当前点击标识
self.nextsign=0 #当前点击标识
self.pre_button=QPushButton()
self.pre_button.setText("<<")
self.pre_button.setFixedSize(25,25)
self.connect(self.pre_button,SIGNAL("clicked()"),self,SLOT("prepage()"))
self.next_button=QPushButton()
self.next_button.setText(">>")
self.connect(self.next_button,SIGNAL("clicked()"),self,SLOT("nextpage()"))
self.next_button.setFixedSize(25,25)
self.center_layout=QHBoxLayout()
self.nextpage()
self.page_layput=QHBoxLayout()
self.page_layput.addWidget(self.pre_button)
self.page_layput.addLayout(self.center_layout)
self.page_layput.addWidget(self.next_button)
self.setLayout(self.page_layput)
@pyqtSlot()
def prepage(self):
self.presign=1
self.num=0
if (len(self.btns)>0) and (self.count>=10):
for p in range(10):
self.center_layout.removeWidget(self.btns[p])
self.btns[p].deleteLater()
self.btns=[]
if self.count>=10:
if self.nextsign==1:
self.count=self.count-20
self.nextsign=0
else:
self.count=self.count-10
self.num=self.count
for i in range(10):
self.num+=1
self.center_button=QPushButton()
self.center_button.setText(str(self.num))
self.center_button.setFixedSize(25,25)
self.btns.append(self.center_button)
self.center_layout.addWidget(self.center_button)
#print self.count
@pyqtSlot()
def nextpage(self):
self.nextsign=1
if len(self.btns)>0:
for p in range(10):
self.center_layout.removeWidget(self.btns[p])
self.btns[p].deleteLater()
self.btns=[]
if self.presign==1:
self.count=self.count+10
self.presign=0
#mapper转有参数
signal_mapper = QSignalMapper(self)
for i in range(10):
self.count+=1
self.center_button=QPushButton()
self.center_button.setText(str(self.count))
self.center_button.setFixedSize(25,25)
self.btns.append(self.center_button)
self.connect(self.center_button,SIGNAL("clicked()"),signal_mapper,SLOT("map()"))
signal_mapper.setMapping(self.center_button, str(self.count))
self.center_layout.addWidget(self.center_button)
self.connect(signal_mapper, SIGNAL("mapped(QString)"), self, SLOT("showpage(QString)"))
#print self.count
@pyqtSlot(QString)
def showpage(self,page):
print page
if __name__=='__main__':
import sys
app=QApplication(sys.argv)
page=PageWidget()
page.show()
sys.exit(app.exec_())
效果图：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持中文源码网。