python - 如何在 wxPython 中制作网格？

Question

我想做一个这样的网格：

不是 wx.Grid。有谁知道如何做到这一点，并可以提供一个例子？

这将用于 GridSizer 或 GridBagSizer 来分隔小部件。

Answer 1

使用框架wxWindow 子类的绘图上下文（框架/面板/等...几乎任何 wxObject）。

一种方法是这样

import wx
class MyCustomFrame(wx.Frame):
    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id)
        self.Bind(wx.EVT_PAINT,self.OnPaint)
    def OnPaint(self,evt):
        self.dc = dc = wx.PaintDC(self)
        p1 = [0,0]
        p2 = [500,0]
        for i in range(100):
            dc.DrawLine(p1[0],p1[1],p2[0],p2[1])
            p1 = [p1[0],p1[1]+5]
            p2 = [p2[0],p2[1]+5]
        p1=[0,0]
        p2 = [0,500]
        for i in range(100):
            dc.DrawLine(p1[0],p1[1],p2[0],p2[1])
            p1 = [p1[0]+5,p1[1]]
            p2 = [p2[0]+5,p2[1]]
if __name__ == "__main__":
    a = wx.App(redirect=False)
    f = MyCustomFrame(None,-1)
    #f.OnPaint(None) --- dont do this!!!
    f.Show()
    a.MainLDop()

您可以改用画线来加快速度

    def OnPaint(self,evt):
        self.dc = dc = wx.PaintDC(self)
        verticle_lines = [(i*5,0,i*5,500) for i in range(100)]
        horizontal_lines = [(0,i*5,500,i*5) for i in range(100)]
        dc.DrawLineList(horizontal_lines+verticle_lines)

为了用网格尺寸器做你想做的事，你可以这样做

import  wx
class   MyCustomPanel(wx.Panel):
    def __init__(self,parent,id):
        wx.Panel.__init__(self,parent,id)
        self.sz =   wx.GridSizer(5,5,0,0)
        for i   in  range(25):
            self.sz.Add(wx.StaticText(self,-1,str(i)))
        self.SetSizer(self.sz)
        self.Bind(wx.EVT_PAINT,self.OnPaint)
    def OnPaint(self,evt):
        self.dc =   dc  =   wx.PaintDC(self)
        w,h = self.sz.GetSize()
        nr = self.sz.GetRows()
        nc = self.sz.GetCols()
        cell_w = float(w)/nc
        cell_h = float(h)/nr
        hlines = [(0,i*cell_h,w,i*cell_h)for i in range(nr+1)]
        vlines = [(i*cell_w,0,i*cell_w,h)for i in range(nc+1)]
        self.dc.DrawLineList(hlines+vlines)

if  __name__    ==  "__main__":
    a   =   wx.App(redirect=False)
    f1 = wx.Frame(None,-1)
    f   =   MyCustomPanel(f1,-1)
    #f.OnPaint(None)
    f1.Show()
    a.MainLoop()

你也可以用这样的风格来完成这个

import  wx
class SimplePanel(wx.Panel):
    def __init__(self,parent,id,str_val):
        wx.Panel.__init__(self,parent,id,style=wx.SIMPLE_BORDER)
        self.sz = wx.BoxSizer()
        self.sz.Add(wx.StaticText(self,-1,str_val),0,wx.ALIGN_CENTER)
        self.SetSizer(self.sz)
class   MyCustomPanel(wx.Panel):
    def __init__(self,parent,id):

        wx.Panel.__init__(self,parent,id)
        self.sz =   wx.GridSizer(5,5,0,0)
        for i   in  range(25):
            self.sz.Add(SimplePanel(self,-1,str(i)),0,wx.GROW)
        self.SetSizer(self.sz)

if  __name__    ==  "__main__":
    a   =   wx.App(redirect=False)
    f1 = wx.Frame(None,-1)
    f   =   MyCustomPanel(f1,-1)
    #f.OnPaint(None)
    f1.Show()
    a.MainLoop()