├── LICENSE
├── README.md
└── packsim.py


/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2022 thom-jp
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/README.md:
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 1 | # tkinter_pack_simulator
 2 | This is python tkinter GUI pack method simulator
 3 | 
 4 | # How to Use
 5 | 1. Run script by python3
 6 | ```bash
 7 | python packsim.py
 8 | ```
 9 | (for my environment, "python" indicates python3)
10 | 
11 | 2. Configure items by bottom control panel
12 | 
13 | ![image](https://user-images.githubusercontent.com/11180273/152720220-4496b305-90c9-4b73-a8d9-b908f8757751.png)
14 | 
15 | |Control|Type|Explanation|
16 | |---|---|---|
17 | |pack|Checkbox|An item will be created on simulation window when checked it.<br>Every other configurations of an item are meaningless when it's unchecked.<br>By default, 4 items are selected.|
18 | |side|Combobox|An item will be packed on a selected side|
19 | |fill|Combobox|An item will try to be filled selected direction.<br>It's limited by occupied area.|
20 | |expand|Checkbox|An item will try to expand occupied area.|
21 | 
22 | That's all.
23 | It'll be nice if it helps someone confusing about "pack" layout method of tkinter.
24 | 
25 | # Note
26 | Packing order is always start from youngest number of items regardless your configuration operation.
27 | When you change something, actually all items are once deleted and re-packed again.
28 | 
29 | # About what I didn't implement
30 | Sorry I was lazy to implement configuration reset feature.
31 | I knwo that reset feature wll be quite helpful but I think this is not an application used repeatedly after user understand how pack works.
32 | So, instead of taking effort on this, I'd like to focus on something more effective.
33 | 


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/packsim.py:
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 1 | import tkinter as tk
 2 | from tkinter import ttk
 3 | 
 4 | class Application(tk.Frame):
 5 |     def __init__(self, master=None):
 6 |         super().__init__(master)
 7 |         master.geometry("800x600")
 8 |         master.title("tkinter pack layout simulator")
 9 |         self.item_colors = ['IndianRed1', 'SteelBlue1', 'SpringGreen1', 'Goldenrod1', 'LightPink1','LightSteelBlue1', 'DarkSeaGreen1', 'Khaki1']
10 |         self.item_count = len(self.item_colors)
11 |         self.default_item_count = 4
12 | 
13 |         self.master = master
14 |         self.pack(fill=tk.BOTH, expand=True)
15 |         self.layout_panels()
16 |         self.layout_control_panel()
17 |         self.layout_items()
18 | 
19 |     def layout_panels(self):
20 |         self.simulation_panel = tk.Frame(self, bg = "white")
21 |         self.control_panel = tk.Frame(self)
22 |         self.control_panel.pack(side=tk.BOTTOM)
23 |         self.simulation_panel.pack(side=tk.TOP,expand=True, fill=tk.BOTH)
24 |         self.contents_frame = tk.Frame(self.simulation_panel, bg="gray31")
25 |         self.contents_frame.pack(side="top", fill="both",expand=True)
26 | 
27 |     def layout_control_panel(self):
28 |         tk.Label(self.control_panel, text="pack").grid(column=0, row=1,sticky="news")
29 |         tk.Label(self.control_panel, text="side").grid(column=0, row=2,sticky="news")
30 |         tk.Label(self.control_panel, text="fill").grid(column=0, row=3,sticky="news")
31 |         tk.Label(self.control_panel, text="expand").grid(column=0, row=4,sticky="news")
32 |         for x in range(1,self.item_count+1):
33 |             tk.Label(self.control_panel, text="Item " + str(x)).grid(column=x,row=0)
34 | 
35 |         self.sides = []
36 |         self.sides.append(tk.StringVar())
37 |         self.sides[0].set("top")
38 | 
39 |         self.fills = []
40 |         self.fills.append(tk.StringVar())
41 |         self.fills[0].set("none")
42 | 
43 |         self.creates = []
44 |         self.creates.append(tk.BooleanVar())
45 |         self.creates[0].set(False)
46 | 
47 |         self.expands = []
48 |         self.expands.append(tk.BooleanVar())
49 |         self.expands[0].set(False)
50 | 
51 |         for y in range(1,self.item_count+1):
52 |             self.sides.append(tk.StringVar())
53 |             self.sides[y].set("top")
54 |             cb1 = ttk.Combobox(self.control_panel,textvariable=self.sides[y],state="readonly",values=['top', 'bottom', 'left', 'right'], width=7)
55 |             cb1.bind("<<ComboboxSelected>>", self.layout_items)
56 |             cb1.grid(column=y,row=2)
57 | 
58 |             self.fills.append(tk.StringVar())
59 |             self.fills[y].set("none")
60 |             cb2 = ttk.Combobox(self.control_panel,textvariable=self.fills[y],state="readonly",values=['none', 'x', 'y', 'both'], width=7)
61 |             cb2.bind("<<ComboboxSelected>>", self.layout_items)
62 |             cb2.grid(column=y,row=3)
63 | 
64 |             self.creates.append(tk.BooleanVar())
65 |             self.creates[y].set(y <= self.default_item_count)
66 | 
67 | 
68 |             chk1 = ttk.Checkbutton(self.control_panel,variable=self.creates[y],command=self.layout_items)
69 |             chk1.grid(column=y,row=1)
70 | 
71 |             self.expands.append(tk.BooleanVar())
72 |             self.expands[y].set(False)
73 |             chk2 = ttk.Checkbutton(self.control_panel,variable=self.expands[y],command=self.layout_items)
74 |             chk2.grid(column=y,row=4)
75 | 
76 | 
77 |     def layout_items(self,*args):
78 |         self.contents_frame.pack_forget()
79 |         for child in self.contents_frame.winfo_children():
80 |             child.destroy()
81 |         self.contents_frame.pack(side="top", fill="both", expand=True)
82 |         self.items = []
83 |         self.items.append(tk.Label(self.contents_frame))
84 |         for x in range(1,self.item_count+1):
85 |             self.items.append(tk.Label(self.contents_frame))
86 |             self.items[x] = tk.Label(self.contents_frame)
87 |             self.items[x]["text"] = "Item " + str(x)
88 |             self.items[x]["bg"] = self.item_colors[x-1]
89 |             if self.creates[x].get():
90 |                 self.items[x].pack(side=self.sides[x].get(), fill=self.fills[x].get(), expand=self.expands[x].get())
91 | 
92 |     def say_hi(self):
93 |         print("hi there, everyone!")
94 | 
95 | root = tk.Tk()
96 | app = Application(master=root)
97 | app.mainloop()
98 | 


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