基于PyQt4和PySide实现输入对话框效果

今天做了个基于PyQt4和PySide的输入对话框.已放到PyPi中,包名wlab，大家可以使用pip安装：

pip install wlab

在程序输入中,有时会要求同时改变多个参数值,而且类型也不尽相同,
这时下面的模块比较彻底的解决了这个问题.先看个示例吧.

比如我们有三个参数,分别为int,float,和字符串类型:

values={'String':'This is String','float':3.5,'int':15}
GroupBoxTitle='Please set values:'
title='QInputBox:'
rvalues=QInputBox(values=values,GroupBoxTitle=GroupBoxTitle,title=title)
print(rvalues)

生成的GUI界面如下:

返回的结果中我们注意到字典rvalues里面数据的类型和字典valuse中时一致的.

也就是说:

如果values中是整数,那么rvalue中的值也是整数;

如果value中是浮点数,那么rvalue中的值也是浮点数;

如果value中是字符串,那么rvalue中的值也是字符串;

目前只支持这三种类型.但对values中输入参数并没有没有数目限制.

对于不会使用pip的新手，可以复制下面的文件：

#-*- coding:utf-8 -*-
#~ #--------------------------------------------------------------------------------
#~ module:wlab
#~ FileName=WPyQtInput.py
#~Class:QInputGroupBox,QInputDialog,QInputBox
#~ author:Wu Xuping
#~ Date:2013-05-06
#~ Email:539688300@qq.com
#~ Remark:based on PyQt4 or PySide
#~ #-------------------------------------------------

try:
 from PyQt4 import QtGui
 from PyQt4 import QtCore
 from PyQt4.QtCore import pyqtSlot
 from PyQt4.QtCore import pyqtSignal
 IsPyQt=True
 IsPySide=False
except ImportError:
 from PySide import QtGui
 from PySide import QtCore
 from PySide.QtCore import Slot as pyqtSlot
 from PySide.QtCore import Signal as pyqtSignal
 IsPyQt=False
 IsPySide=True
#~ #-------------------------------------------------

#~ #-------------------------------------------------
#~ #将字符串一特定的长度输出
def FormatStr(MaxStrLength,s):
 if (len(s)<MaxStrLength):
   for n in range(MaxStrLength-len(s)):
     s=' '+s

rs=str(s)+':'
 return rs

class IntLineEdit(QtGui.QLineEdit):
 def __init__ (self,num=0):
   '''
   #~ IntLineEdit(num)
   '''
   QtGui.QLineEdit.__init__ (self)
   self.num=num
   self.setText(str(self.num))

@pyqtSlot(int)
 def setValue(self,n):
   self.setText(str(n))
   return (self.num,n)

class FloatLineEdit(QtGui.QLineEdit):
 def __init__ (self,num=0.0):
   '''
   #~ FloatLineEdit(num)
   '''
   QtGui.QLineEdit.__init__ (self)
   self.num=num
   self.setText(str(self.num))

@pyqtSlot(int)
 def setValue(self,n):
   if ( self.num>0):
     self.setText(str(self.num+n*self.num/50.0))
   else:
     self.setText(str(self.num-n*self.num/50.0))
   return (self.num,n)
#~ #-------------------------------------------------
class QInputGroupBox(QtGui.QGroupBox):
 def __init__(self, values={'String':'This is String','float':3.5,'int':15},title='Please set values',ntimes=2.0,parent=None):
   '''
   #~#---------------------------------------------------
   #~#Examples:
   #~#---------------------------------------------------
   #~ >>>values={'String':'This is String','float':3.5,'int':15}
   #~ >>>GroupBoxTitle='Please set values'
   #~ >>>self.QIGBox=QInputGroupBox(values=values,title=GroupBoxTitle,ntimes=2.0,parent=self)
   #~ >>>rvalues=self.QIGBox.GetOriginValue()
   #~ >>>rvalues=self.QIGBox.GetModifiedValues()
   #~#---------------------------------------------------
   #~#Parameters:
   #~#---------------------------------------------------
   #~#values={'String':'This is String','float':3.5,'int':15}
   #~#title='Please set values'
   #~#ntimes=2.0
   #~#parent=None
   '''
   QtGui.QGroupBox.__init__ (self, title=title,parent = parent)

self.OriginValues=values.copy()
   self.ModifiedValues=values.copy()

MaxStrLength=max([len(str(s)) for s in list(values.keys())])

layout = QtGui.QGridLayout()
   cnt=0
   for key in self.ModifiedValues:
     label=FormatStr(MaxStrLength,str(key))
     KeyLabel=QtGui.QLabel(label)
     layout.addWidget(KeyLabel, cnt, 0)
     ovk=self.ModifiedValues[key]

if(type(ovk)==int) :
       valueLineEdit=IntLineEdit(ovk)
       layout.addWidget(valueLineEdit, cnt , 1)
       slider=QtGui.QSlider(orientation= QtCore.Qt.Horizontal)
       if (ovk>0):
         slider.setRange( ovk/(ntimes+1), ovk*(ntimes+1))
       elif (ovk==0):
         slider.setRange( -5*(ntimes+1), 5*(ntimes+1))
       else:
         slider.setRange(ovk*(ntimes+1),ovk/(ntimes+1))
       slider.setValue(ovk)
       QtCore.QObject.connect(slider,QtCore.SIGNAL('valueChanged(int)'),
             valueLineEdit, QtCore.SLOT('setValue(int)'))
       layout.addWidget(slider, cnt ,2)

elif(type(ovk)==float) :
       valueLineEdit=FloatLineEdit(ovk)

layout.addWidget(valueLineEdit, cnt , 1)
       slider=QtGui.QSlider(orientation= QtCore.Qt.Horizontal)
       slider.setRange( -50*ntimes, 50*ntimes)
       QtCore.QObject.connect(slider,QtCore.SIGNAL('valueChanged(int)'),
             valueLineEdit, QtCore.SLOT('setValue(int)'))
       layout.addWidget(slider, cnt ,2)

else:
       valueLineEdit=QtGui.QLineEdit(ovk)
       layout.addWidget(valueLineEdit, cnt, 1,1,2)

#~ #set an object name for QLineEdit,Later we can use findchild() to find it
     valueLineEdit.setObjectName('VLE'+str(cnt))

layout.setRowStretch(cnt,5)
     cnt=cnt+1

layout.setColumnStretch(0, 1)
   layout.setColumnStretch(1, 5)
   layout.setColumnStretch(2, 10)

self.setLayout(layout)

def GetOriginValue(self):
   '''
   #~ if the user click btn_Cancel,then return OriginValues
   '''
   return self.OriginValues

def GetModifiedValues(self):
   '''
   #~ if the user click btn_OK,then return self.ModifiedValues
   '''
   cnt=0
   for key in self.ModifiedValues:
     keyStr=str(key)
     VLEObjectName='VLE'+str(cnt)
     if (IsPyQt):
       VLE=self.findChild((QtGui.QLineEdit, ),VLEObjectName)
     else:
       VLE=self.findChild(QtGui.QLineEdit,VLEObjectName)
     cnt=cnt+1
     ovk=self.ModifiedValues[key]
     if(type(ovk)==int):
       self.ModifiedValues[key]=int(VLE.text())
     elif(type(ovk)==float):
       self.ModifiedValues[key]=float(VLE.text())
     else:
       self.ModifiedValues[key]=str(VLE.text())

return self.ModifiedValues
#~ #-------------------------------------------------
class QInputDialog(QtGui.QDialog):
 def __init__(self, values={'String':'This is String','float':3.5,'int':15},GroupBoxTitle='Please set values',title='QInputDialog:',parent=None):
   '''
   #~ >>>values={'String':'This is String','float':3.5,'int':15}
   #~ >>>GroupBoxTitle='Please set values'
   #~ >>>title='QInputDialog:'
   #~ >>>dlg = QInputDialog(values=values,GroupBoxTitle=GroupBoxTitle,title=title,parent=None)
   #~ >>>if ( dlg.exec_() == QtGui.QDialog.Accepted):
    #~ >>>   rvalues = dlg.GetModifiedValues()
   #~ >>>else:
   #~ >>>   rvalues = dlg.GetOriginValue()
   '''
   QtGui.QDialog.__init__(self, parent=parent)
   self.setWindowTitle(title)
   self.QIGBox=QInputGroupBox(values=values,title=GroupBoxTitle,parent=self)

self.vbox = QtGui.QVBoxLayout()
   self.vbox.addWidget(self.QIGBox)

self.btn_OK=QtGui.QDialogButtonBox(QtGui.QDialogButtonBox.Ok)
   self.btn_Cancel=QtGui.QDialogButtonBox(QtGui.QDialogButtonBox.Cancel)

self.btn_OK.clicked.connect(self.accept )
   self.btn_Cancel.clicked.connect(self.reject)

hbox = QtGui.QHBoxLayout()
   hbox.addWidget(self.btn_OK)
   hbox.addWidget(self.btn_Cancel)
   self.vbox.addLayout(hbox)
   self.setLayout(self.vbox)

def GetOriginValue(self):
   '''
   #~ if the user click btn_Cancel,then return OriginValues
   '''
   return self.QIGBox.GetOriginValue()

def GetModifiedValues(self):
   '''
   #~ if the user click btn_OK,then return self.ModifiedValues
   '''
   return self.QIGBox.GetModifiedValues()
#~ #-------------------------------------------------
#~ #Good packaging QInputBox
def QInputBox(values={'String':'This is String','float':3.5,'int':15},GroupBoxTitle='Please set values',title='QInputBox'):
 '''
 #~ >>>values={'String':'This is String','float':3.5,'int':15}
 #~ >>>GroupBoxTitle='Please set values'
 #~ >>>title='QInputBox'
 #~ >>>rvalues=QInputBox(values=values,GroupBoxTitle=GroupBoxTitle,title=title)
 #~ >>>print(rvalues)
 #~ #>>>rvalues=QInputBox(values,GroupBoxTitle)
 #~ #>>>rvalues=QInputBox(values)
 #~ #>>>rvalues=QInputBox()
 '''
 #app = QtGui.QApplication(sys.argv)#已自动创建，无需再创建
 dlg = QInputDialog(values=values,GroupBoxTitle=GroupBoxTitle,title=title)
 if ( dlg.exec_() == QtGui.QDialog.Accepted):
   rvalues = dlg.GetModifiedValues()
 else:
   rvalues = dlg.GetOriginValue()
 return rvalues

#~ #---------------------------------------------------------------------------------------------------------
#~ # main test program for __WPyQtInput__.py
#~ #---------------------------------------------------------------------------------------------------------
if __name__ == '__main__':
 #----------------------------------------------------------------------------------------
 try:
   from PyQt4 import QtGui
   from PyQt4 import QtCore
   from PyQt4.QtCore import pyqtSlot
   from PyQt4.QtCore import pyqtSignal
   IsPyQt=True
   IsPySide=False
 except ImportError:
   from PySide import QtGui
   from PySide import QtCore
   from PySide.QtCore import Slot as pyqtSlot
   from PySide.QtCore import Signal as pyqtSignal
 #----------------------------------------------------------------------------------------
 import sys
 app = QtGui.QApplication(sys.argv)#创建Qt进程app
 #----------------------------------------------------------------------------------------
 #示例1
 values={'String':'This is String','float':-3.5,'int':-15}
 GroupBoxTitle='Please set values'
 title='the first example of QInputBox '
 rvalues=QInputBox(values=values,GroupBoxTitle=GroupBoxTitle,title=title)
 print(rvalues)
 #>>>{'int': -15, 'float': -3.5, 'String': 'This is String'}
 #----------------------------------------------------------------------------------------
 #示例2
 from collections import OrderedDict
 values=OrderedDict([('c', 1), (2, 2), ('a', 3)])
 rvalues1=QInputBox(values=values)
 print(rvalues1)
 #>>>OrderedDict([('c', 1), (2, 2), ('a', 3)])
 #----------------------------------------------------------------------------------------
 #示例3
 values={'String':'This is String','float':-3.5,'int':-15}
 GroupBoxTitle='Please set values'
 title='QInputBox'
 rvalues2=QInputBox(values=values,GroupBoxTitle=GroupBoxTitle,title=title)
 print(rvalues2)
 #>>>{'int': -15, 'float': -3.5, 'String': 'This is String'}
 #----------------------------------------------------------------------------------------
 sys.exit(app.exec_())

来源：https://blog.csdn.net/rumswell/article/details/8878322