128 lines
4.7 KiB
Markdown
128 lines
4.7 KiB
Markdown
# wxPython:如何创建通用向导
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> 原文：<https://www.blog.pythonlibrary.org/2012/07/12/wxpython-how-to-create-a-generic-wizard/>
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前几天在 StackOverflow 上，我看到有人正在努力使用 wxPython 的向导小部件。当涉及到按钮时，向导不允许太多的定制，所以我决定看看编写自己的向导有多难。这段代码非常有限，但这是我的第一个测试版本:
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```py
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import wx
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########################################################################
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class WizardPage(wx.Panel):
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""""""
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#----------------------------------------------------------------------
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def __init__(self, parent, title=None):
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"""Constructor"""
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wx.Panel.__init__(self, parent)
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sizer = wx.BoxSizer(wx.VERTICAL)
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self.SetSizer(sizer)
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if title:
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title = wx.StaticText(self, -1, title)
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title.SetFont(wx.Font(18, wx.SWISS, wx.NORMAL, wx.BOLD))
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sizer.Add(title, 0, wx.ALIGN_CENTRE|wx.ALL, 5)
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sizer.Add(wx.StaticLine(self, -1), 0, wx.EXPAND|wx.ALL, 5)
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########################################################################
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class WizardPanel(wx.Panel):
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""""""
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#----------------------------------------------------------------------
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def __init__(self, parent):
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"""Constructor"""
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wx.Panel.__init__(self, parent=parent)
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self.pages = []
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self.page_num = 0
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self.mainSizer = wx.BoxSizer(wx.VERTICAL)
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self.panelSizer = wx.BoxSizer(wx.VERTICAL)
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btnSizer = wx.BoxSizer(wx.HORIZONTAL)
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# add prev/next buttons
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self.prevBtn = wx.Button(self, label="Previous")
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self.prevBtn.Bind(wx.EVT_BUTTON, self.onPrev)
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btnSizer.Add(self.prevBtn, 0, wx.ALL|wx.ALIGN_RIGHT, 5)
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self.nextBtn = wx.Button(self, label="Next")
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self.nextBtn.Bind(wx.EVT_BUTTON, self.onNext)
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btnSizer.Add(self.nextBtn, 0, wx.ALL|wx.ALIGN_RIGHT, 5)
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# finish layout
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self.mainSizer.Add(self.panelSizer, 1, wx.EXPAND)
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self.mainSizer.Add(btnSizer, 0, wx.ALIGN_RIGHT)
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self.SetSizer(self.mainSizer)
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#----------------------------------------------------------------------
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def addPage(self, title=None):
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""""""
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panel = WizardPage(self, title)
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self.panelSizer.Add(panel, 2, wx.EXPAND)
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self.pages.append(panel)
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if len(self.pages) > 1:
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# hide all panels after the first one
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panel.Hide()
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self.Layout()
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#----------------------------------------------------------------------
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def onNext(self, event):
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""""""
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pageCount = len(self.pages)
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if pageCount-1 != self.page_num:
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self.pages[self.page_num].Hide()
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self.page_num += 1
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self.pages[self.page_num].Show()
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self.panelSizer.Layout()
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else:
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print "End of pages!"
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if self.nextBtn.GetLabel() == "Finish":
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# close the app
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self.GetParent().Close()
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if pageCount == self.page_num+1:
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# change label
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self.nextBtn.SetLabel("Finish")
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#----------------------------------------------------------------------
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def onPrev(self, event):
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""""""
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pageCount = len(self.pages)
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if self.page_num-1 != -1:
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self.pages[self.page_num].Hide()
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self.page_num -= 1
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self.pages[self.page_num].Show()
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self.panelSizer.Layout()
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else:
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print "You're already on the first page!"
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########################################################################
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class MainFrame(wx.Frame):
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""""""
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#----------------------------------------------------------------------
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def __init__(self):
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"""Constructor"""
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wx.Frame.__init__(self, None, title="Generic Wizard", size=(800,600))
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self.panel = WizardPanel(self)
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self.panel.addPage("Page 1")
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self.panel.addPage("Page 2")
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self.panel.addPage("Page 3")
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self.Show()
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if __name__ == "__main__":
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app = wx.App(False)
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frame = MainFrame()
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app.MainLoop()
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```
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主框架实例化了我们的主面板(WizardPanel)。这里是我们大部分代码的位置。它毕竟控制着向导页面的来回分页。您可以随意定义向导页面。事实上，我在第二个版本中可能会做的是这样做，这样我就可以传入一个我自己制作的面板类，因为只使用我想出的简单页面真的很有限。总之，我添加了 3 页，然后我有一些检查来遍历它们。我希望其他人也会对此感兴趣。玩得开心！
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### 进一步阅读
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* wxPython: [一个向导教程](https://www.blog.pythonlibrary.org/2011/01/27/wxpython-a-wizard-tutorial/) |