added ttk theme based on opensource dark theme with minor tweaks for button presses and menu coloring

coretk/coretk/theme.py

@@ -0,0 +1,162 @@
+import tkinter as tk
+from tkinter import ttk
+
+
+class Colors:
+    disabledfg = "DarkGrey"
+    frame = "#424242"
+    dark = "#222222"
+    darker = "#121212"
+    darkest = "black"
+    lighter = "#626262"
+    lightest = "#ffffff"
+    selectbg = "#4a6984"
+    selectfg = "#ffffff"
+    white = "white"
+    black = "black"
+
+
+style = ttk.Style()
+style.theme_create(
+    "black",
+    "clam",
+    {
+        ".": {
+            "configure": {
+                "background": Colors.frame,
+                "foreground": Colors.white,
+                "bordercolor": Colors.darkest,
+                "darkcolor": Colors.dark,
+                "lightcolor": Colors.lighter,
+                "troughcolor": Colors.darker,
+                "selectbackground": Colors.selectbg,
+                "selectforeground": Colors.selectfg,
+                "selectborderwidth": 0,
+                "font": "TkDefaultFont",
+            },
+            "map": {
+                "background": [("disabled", Colors.frame), ("active", Colors.lighter)],
+                "foreground": [("disabled", Colors.disabledfg)],
+                "selectbackground": [("!focus", Colors.darkest)],
+                "selectforeground": [("!focus", Colors.white)],
+            },
+        },
+        "TButton": {
+            "configure": {"width": 8, "padding": (5, 1), "relief": tk.RAISED},
+            "map": {
+                "relief": [("pressed", tk.SUNKEN)],
+                "shiftrelief": [("pressed", 1)],
+            },
+        },
+        "TMenubutton": {
+            "configure": {"width": 11, "padding": (5, 1), "relief": tk.RAISED}
+        },
+        "TCheckbutton": {
+            "configure": {
+                "indicatorbackground": Colors.white,
+                "indicatormargin": (1, 1, 4, 1),
+            }
+        },
+        "TRadiobutton": {
+            "configure": {
+                "indicatorbackground": Colors.white,
+                "indicatormargin": (1, 1, 4, 1),
+            }
+        },
+        "TEntry": {
+            "configure": {
+                "fieldbackground": Colors.white,
+                "foreground": Colors.black,
+                "padding": (2, 0),
+            }
+        },
+        "TCombobox": {
+            "configure": {
+                "fieldbackground": Colors.white,
+                "foreground": Colors.black,
+                "padding": (2, 0),
+            }
+        },
+        "TNotebook.Tab": {
+            "configure": {"padding": (6, 2, 6, 2)},
+            "map": {"background": [("selected", Colors.lighter)]},
+        },
+        "Treeview": {
+            "configure": {
+                "fieldbackground": Colors.white,
+                "background": Colors.white,
+                "foreground": Colors.black,
+            },
+            "map": {
+                "background": [("selected", Colors.selectbg)],
+                "foreground": [("selected", Colors.selectfg)],
+            },
+        },
+    },
+)
+style.theme_use("black")
+
+
+def update_menu(event):
+    bg = style.lookup(".", "background")
+    fg = style.lookup(".", "foreground")
+    abg = style.lookup(".", "lightcolor")
+    event.widget.config(
+        background=bg, foreground=fg, activebackground=abg, activeforeground=fg
+    )
+
+
+class Application(ttk.Frame):
+    def __init__(self, master=None):
+        super().__init__(master)
+        self.master.bind_class("Menu", "<<ThemeChanged>>", update_menu)
+        self.master.geometry("800x600")
+        menu = tk.Menu(self.master)
+        menu.add_command(label="Command1")
+        menu.add_command(label="Command2")
+        submenu = tk.Menu(menu, tearoff=False)
+        submenu.add_command(label="Command1")
+        submenu.add_command(label="Command2")
+        menu.add_cascade(label="Submenu", menu=submenu)
+        self.master.config(menu=menu)
+        self.master.columnconfigure(0, weight=1)
+        self.master.rowconfigure(0, weight=1)
+        notebook = ttk.Notebook(self.master)
+        notebook.grid(sticky="nsew")
+        frame = ttk.Frame(notebook)
+        frame.grid(sticky="nsew")
+        ttk.Label(frame, text="Label").grid()
+        ttk.Entry(frame).grid()
+        ttk.Button(frame, text="Button").grid()
+        ttk.Combobox(frame, values=("one", "two", "three")).grid()
+        menubutton = ttk.Menubutton(frame, text="MenuButton")
+        menubutton.grid()
+        mbmenu = tk.Menu(menubutton, tearoff=False)
+        menubutton.config(menu=mbmenu)
+        mbmenu.add_command(label="Menu1")
+        mbmenu.add_command(label="Menu2")
+        submenu = tk.Menu(mbmenu, tearoff=False)
+        submenu.add_command(label="Command1")
+        submenu.add_command(label="Command2")
+        mbmenu.add_cascade(label="Submenu", menu=submenu)
+        ttk.Radiobutton(frame, text="Radio Button").grid()
+        ttk.Checkbutton(frame, text="Check Button").grid()
+        tv = ttk.Treeview(frame, columns=("one", "two", "three"), show="headings")
+        tv.grid()
+        tv.column("one", stretch=tk.YES)
+        tv.heading("one", text="ID")
+        tv.column("two", stretch=tk.YES)
+        tv.heading("two", text="State")
+        tv.column("three", stretch=tk.YES)
+        tv.heading("three", text="Node Count")
+        tv.insert("", tk.END, text="1", values=("v1", "v2", "v3"))
+        tv.insert("", tk.END, text="2", values=("v1", "v2", "v3"))
+        notebook.add(frame, text="Tab1")
+        frame = ttk.Frame(notebook)
+        frame.grid(sticky="nsew")
+        notebook.add(frame, text="Tab2")
+
+
+if __name__ == "__main__":
+    app = Application()
+    app.mainloop()