#!/usr/bin/python
import wx
import wx.html as html
import os
def help():
"""
Provide general online help text
Future work: extend this function to allow topic selection
"""
info_txt = "The inversion approach is based on Moore, J. Appl. Cryst. (1980) 13, 168-175.\n\n"
info_txt += "P(r) is set to be equal to an expansion of base functions of the type "
info_txt += "phi_n(r) = 2*r*sin(pi*n*r/D_max). The coefficient of each base functions "
info_txt += "in the expansion is found by performing a least square fit with the "
info_txt += "following fit function:\n\n"
info_txt += "chi**2 = sum_i[ I_meas(q_i) - I_th(q_i) ]**2/error**2 + Reg_term\n\n"
info_txt += "where I_meas(q) is the measured scattering intensity and I_th(q) is "
info_txt += "the prediction from the Fourier transform of the P(r) expansion. "
info_txt += "The Reg_term term is a regularization term set to the second derivative "
info_txt += "d**2P(r)/dr**2 integrated over r. It is used to produce a smooth P(r) output.\n\n"
info_txt += "The following are user inputs:\n\n"
info_txt += " - Number of terms: the number of base functions in the P(r) expansion.\n\n"
info_txt += " - Regularization constant: a multiplicative constant to set the size of "
info_txt += "the regularization term.\n\n"
info_txt += " - Maximum distance: the maximum distance between any two points in the system.\n"
return info_txt
class HelpDialog(wx.Dialog):
def __init__(self, parent, id):
wx.Dialog.__init__(self, parent, id, size=(400, 420))
self.SetTitle("P(r) help")
vbox = wx.BoxSizer(wx.VERTICAL)
explanation = help()
label_explain = wx.StaticText(self, -1, explanation, size=(350,320))
vbox.Add(label_explain, 0, wx.ALL|wx.EXPAND, 15)
static_line = wx.StaticLine(self, -1)
vbox.Add(static_line, 0, wx.EXPAND, 0)
button_OK = wx.Button(self, wx.ID_OK, "OK")
sizer_button = wx.BoxSizer(wx.HORIZONTAL)
sizer_button.Add((20, 20), 1, wx.EXPAND|wx.ADJUST_MINSIZE, 0)
sizer_button.Add(button_OK, 0, wx.LEFT|wx.RIGHT|wx.ADJUST_MINSIZE, 10)
vbox.Add(sizer_button, 0, wx.EXPAND|wx.BOTTOM|wx.TOP, 10)
self.SetSizer(vbox)
self.SetAutoLayout(True)
self.Layout()
self.Centre()
class HelpWindow(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, size=(600, 450))
"""
contains help info
"""
vbox1 = wx.BoxSizer(wx.HORIZONTAL)
lpanel = wx.Panel(self, -1, style=wx.BORDER_SUNKEN)
rpanel = wx.Panel(self, -1)
vbox1.Add(lpanel, -1, wx.EXPAND|wx.ADJUST_MINSIZE, 0)
vbox1.Add(rpanel, -1, wx.EXPAND|wx.ADJUST_MINSIZE, 0)
vbox = wx.BoxSizer(wx.VERTICAL)
header = wx.Panel(rpanel, -1, size=(-1, 20))
header.SetBackgroundColour('#6666FF')
header.SetForegroundColour('WHITE')
hbox = wx.BoxSizer(wx.HORIZONTAL)
st = wx.StaticText(header, -1, 'Contents', (5, 5))
font = st.GetFont()
font.SetPointSize(10)
st.SetFont(font)
hbox.Add(st, 1, wx.TOP | wx.BOTTOM | wx.LEFT, 5)
header.SetSizer(hbox)
vbox.Add(header, 0, wx.EXPAND)
vboxl= wx.BoxSizer(wx.VERTICAL)
headerl = wx.Panel(lpanel, -1, size=(-1, 20))
headerl.SetBackgroundColour('#6666FF')
headerl.SetForegroundColour('WHITE')
hboxl = wx.BoxSizer(wx.HORIZONTAL)
lst = wx.StaticText(headerl, -1, 'Menu', (5, 5))
fontl = lst.GetFont()
fontl.SetPointSize(10)
lst.SetFont(fontl)
hboxl.Add(lst, 1, wx.TOP | wx.BOTTOM | wx.LEFT, 5)
headerl.SetSizer(hboxl)
vboxl.Add(headerl, 0, wx.EXPAND)
self.lhelp = html.HtmlWindow(lpanel, -1, style=wx.NO_BORDER)
self.rhelp = html.HtmlWindow(rpanel, -1, style=wx.NO_BORDER)
page1="""
Select topic on Menu
"""
page="""
"""
self.rhelp.SetPage(page1)
self.lhelp.SetPage(page)
self.lhelp.Bind(wx.html.EVT_HTML_LINK_CLICKED,self.OnLinkClicked )
vbox.Add(self.rhelp, 1, wx.EXPAND)
vboxl.Add(self.lhelp, 1, wx.EXPAND)
rpanel.SetSizer(vbox)
lpanel.SetSizer(vboxl)
lpanel.SetFocus()
self.SetSizer(vbox1)
self.Centre()
self.Show(True)
def OnLinkClicked(self, event):
"""
Function to diplay html page related to the hyperlinktext selected
"""
link= event.GetLinkInfo().GetHref()
self.rhelp.LoadPage(link)
class ViewApp(wx.App):
def OnInit(self):
frame = HelpWindow(None, -1, 'HelpWindow')
frame.Show(True)
self.SetTopWindow(frame)
return True
if __name__ == "__main__":
app = ViewApp(0)
app.MainLoop()