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gui.py
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gui.py
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# file: gui.py
# vim:fileencoding=utf-8:fdm=marker:ft=python
# lamprop GUI - main program.
#
# Copyright © 2018 R.F. Smith <[email protected]>. All rights reserved.
# Created: 2018-01-21 17:55:29 +0100
# Last modified: 2022-01-29T01:43:13+0100
#
# SPDX-License-Identifier: BSD-2-Clause
from functools import partial
import os
import sys
import tkinter as tk
from tkinter import ttk
from tkinter.font import nametofont
from tkinter.scrolledtext import ScrolledText
from tkinter import filedialog
import lp
class LampropUI(tk.Tk):
def __init__(self, parent):
tk.Tk.__init__(self, parent)
self.parent = parent
if os.name == "posix":
self.directory = os.getcwd()
else:
self.directory = ""
self.lamfile = tk.StringVar()
self.lamfile.set("no file selected")
self.laminates = None
self.engprop = tk.IntVar()
self.engprop.set(1)
self.result = None
self.matrices = tk.IntVar()
self.fea = tk.IntVar()
# Don't show hidden files in the file dialog
# https://stackoverflow.com/questions/53220711
try:
# call a dummy dialog with an impossible option to initialize the file
# dialog without really getting a dialog window; this will throw a
# TclError, so we need a try...except :
try:
self.tk.call("tk_getOpenFile", "-foobarbaz")
except tk.TclError:
pass
# now set the magic variables accordingly
self.tk.call("set", "::tk::dialog::file::showHiddenBtn", "1")
self.tk.call("set", "::tk::dialog::file::showHiddenVar", "0")
except Exception:
pass
self.initialize()
def initialize(self):
"""Create the GUI."""
# Set the font
default_font = nametofont("TkDefaultFont")
default_font["size"] = 12
self.option_add("*Font", default_font)
self.option_add("*tearOff", False)
# General commands and bindings
self.rowconfigure(5, weight=1)
self.columnconfigure(4, weight=1)
# Create menu.
menubar = tk.Menu(self)
self["menu"] = menubar
file_menu = tk.Menu(menubar)
file_menu.add_command(label="Open", underline=0, command=self.do_fileopen)
file_menu.add_command(label="Reload", underline=0, command=self.do_reload)
file_menu.add_command(
label="Info",
underline=0,
command=self.show_info,
state="disabled",
)
file_menu.add_command(
label="Warnings",
underline=0,
command=self.show_warnings,
state="disabled",
)
file_menu.add_separator()
file_menu.add_command(
label="Text export",
underline=0,
command=self.do_export_txt,
state="disabled",
)
file_menu.add_command(
label="HTML export",
underline=0,
command=self.do_export_html,
state="disabled",
)
file_menu.add_separator()
file_menu.add_command(label="Quit", underline=0, command=self.quit)
menubar.add_cascade(label="File", underline=0, menu=file_menu)
self.file_menu = file_menu
helpmenu = tk.Menu(menubar)
helpmenu.add_command(label="About", underline=0, command=self.show_about)
helpmenu.add_command(label="License", underline=0, command=self.show_license)
menubar.add_cascade(label="Help", underline=0, menu=helpmenu)
# Create widgets.
# Row
prbut = ttk.Label(self, text="File:", anchor="w")
prbut.grid(row=0, column=0, sticky="w")
fnlabel = ttk.Label(self, anchor="w", textvariable=self.lamfile)
fnlabel.grid(row=0, column=1, columnspan=4, sticky="ew")
# Row
cb = partial(self.on_laminate, event=0)
chkengprop = ttk.Checkbutton(
self, text="Engineering properties", variable=self.engprop, command=cb
)
chkengprop.grid(row=1, column=0, columnspan=3, sticky="w")
# Row
chkmat = ttk.Checkbutton(
self,
text="ABD & H matrices, stiffness tensor",
variable=self.matrices,
command=cb,
)
chkmat.grid(row=2, column=0, columnspan=3, sticky="w")
# Row
chkmat = ttk.Checkbutton(
self, text="FEA material data", variable=self.fea, command=cb
)
chkmat.grid(row=3, column=0, columnspan=3, sticky="w")
# Row
cxlam = ttk.Combobox(self, state="readonly", justify="left")
cxlam.grid(row=4, column=0, columnspan=5, sticky="we")
cxlam.bind("<<ComboboxSelected>>", self.on_laminate)
self.cxlam = cxlam
# Row
fixed = nametofont("TkFixedFont")
fixed["size"] = 12
res = ScrolledText(self, state="disabled", font=fixed)
res.grid(row=5, column=0, columnspan=5, sticky="nsew")
self.result = res
# Callbacks
def do_fileopen(self):
"""Open a lamprop file."""
if not self.directory:
available = [
os.environ[k] for k in ("HOME", "HOMEDRIVE") if k in os.environ
]
if available:
self.directory = available[0]
fn = filedialog.askopenfile(
title="Lamprop file to open",
parent=self,
defaultextension=".lam",
filetypes=(("lamprop files", "*.lam"), ("all files", "*.*")),
initialdir=self.directory,
)
if not fn:
return
self.directory = os.path.dirname(fn.name)
self.lamfile.set(fn.name)
self.do_reload()
def do_reload(self):
"""Reload the laminates."""
laminates = lp.parse(self.lamfile.get())
if not laminates:
return
self.file_menu.entryconfigure("Text export", state="disabled")
self.file_menu.entryconfigure("HTML export", state="disabled")
self.file_menu.entryconfigure("Info", state="disabled")
self.file_menu.entryconfigure("Warnings", state="disabled")
self.laminates = {lam.name: lam for lam in laminates}
self.cxlam["values"] = list(self.laminates.keys())
self.cxlam.current(0)
self.on_laminate(0)
self.file_menu.entryconfigure("Text export", state="normal")
self.file_menu.entryconfigure("HTML export", state="normal")
self.file_menu.entryconfigure("Info", state="normal")
if lp.warn:
self.file_menu.entryconfigure("Warnings", state="normal")
self.show_warnings()
def gentxt(self):
"""Generate text output."""
name = self.cxlam.get()
text = "\n".join(
lp.text.out(
self.laminates[name],
bool(self.engprop.get()),
bool(self.matrices.get()),
bool(self.fea.get()),
)
)
return text
def on_laminate(self, event):
"""Laminate choice has changed."""
text = self.gentxt()
self.result["state"] = "normal"
self.result.replace("1.0", "end", text)
self.result["state"] = "disabled"
def do_export_txt(self):
"""Export current laminate as text."""
res = filedialog.asksaveasfile(
title="Save as text",
parent=self,
defaultextension=".txt",
filetypes=(("text files", "*.txt"), ("all files", "*.*")),
initialdir=self.directory,
initialfile=self.cxlam.get() + ".txt",
)
if not res:
return
text = self.gentxt()
with open(res.name, "w") as tf:
tf.write(text)
def do_export_html(self):
"""Export current laminate as HTML."""
res = filedialog.asksaveasfile(
title="Save as HTML",
parent=self,
defaultextension=".html",
filetypes=(("HTML files", "*.html"), ("all files", "*.*")),
initialdir=self.directory,
initialfile=self.cxlam.get() + ".html",
)
if not res:
return
name = self.cxlam.get()
html = "\n".join(
lp.html.out(
self.laminates[name],
bool(self.engprop.get()),
bool(self.matrices.get()),
bool(self.fea.get()),
)
)
with open(res.name, "w") as hf:
hf.write(html)
def show_about(self):
message(
self,
"Lamprop is a program to calculate physical and mechanical properties\n"
"of continuous fiber reinforced composite laminates.\n\n"
"The latest version can be found online at:"
"https://github.com/rsmith-nl/lamprop\n"
"Look under “Releases”.\n\n"
"For more in-depth information, see “lamprop-manual.pdf” in the doc subdirectory.",
title="About",
)
def show_license(self):
"""Display license"""
message(self, lp.__license__, title="License", height=25)
def show_info(self):
"""Display parser information"""
text = "\n".join(lp.info)
message(self, text, f"Information for {self.lamfile.get()}")
def show_warnings(self):
"""Display parser warnings"""
text = "\n".join(lp.warn)
message(self, text, f"Warnings for {self.lamfile.get()}")
def message(parent, msg, title="Message", width=80, height=10):
"""Create a toplevel window to display a long message."""
tl = tk.Toplevel(parent)
tl.title(title)
tl.rowconfigure(0, weight=1)
tl.columnconfigure(0, weight=1)
txt = tk.Text(tl, width=width, height=height)
txt["bg"] = "lightgrey"
txt.insert("1.0", msg)
txt["state"] = "disabled"
txt.grid(row=0, column=0, sticky="nesw")
ok = ttk.Button(tl, text="Close", command=tl.destroy)
ok.grid(row=1, column=0)
if __name__ == "__main__":
if os.name == "posix":
if os.fork():
sys.exit()
else:
sys.stdout = open(os.devnull, "w")
sys.stderr = open(
os.path.join(os.getenv("TEMP"), "stderr-" + os.path.basename(sys.argv[0])),
"w",
)
root = LampropUI(None)
root.wm_title("Lamprop GUI v" + lp.__version__)
root.mainloop()