quick-brown-foxxx/setting-up-shortcuts

Setting Up Keyboard Shortcuts

Reusable keyboard shortcuts system for PySide6 applications. Provides platform-specific defaults, TOML configuration, and Qt integration.

Copy reusable code from coding_rules_python/reusable/shortcuts/ and tests from coding_rules_python/reusable_tests/.

See also: reusable/shortcuts/README.md for full API reference.

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When to Use

• PySide6 desktop apps that need customizable keyboard shortcuts
• Apps targeting multiple platforms (Linux, Windows, macOS)
• Apps where users should be able to edit shortcuts via config file

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Quick Start

1. Define Shortcuts

# src/myapp/config.py
from shared.shortcuts import ActionShortcut

DEFAULT_SHORTCUTS = (
    ActionShortcut("new_file", "New File", "Ctrl+N", "Ctrl+N", "Cmd+N"),
    ActionShortcut("save", "Save", "Ctrl+S", "Ctrl+S", "Cmd+S"),
    ActionShortcut("quit", "Quit", "Ctrl+Q", "Ctrl+Q", "Cmd+Q"),
    ActionShortcut("search", "Search", "Ctrl+F"),  # Same on all platforms
)

2. Initialize Manager

from shared.shortcuts import ShortcutManager
from pathlib import Path
import platformdirs

manager = ShortcutManager(
    config_dir=Path(platformdirs.user_config_dir("myapp")),
    app_name="myapp",
    default_shortcuts=DEFAULT_SHORTCUTS,
)

3. Use in Qt

from PySide6.QtGui import QAction, QKeySequence
from PySide6.QtWidgets import QMainWindow

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.shortcut_manager = manager
        self.shortcut_manager.load()
        self._setup_menu()

    def _setup_menu(self):
        file_menu = self.menuBar().addMenu("&File")

        save_action = QAction("&Save", self)
        save_action.setShortcut(QKeySequence(self.shortcut_manager.get_shortcut("save")))
        save_action.triggered.connect(self._save)
        file_menu.addAction(save_action)

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Key Concepts

ActionShortcut

Immutable definition of a keyboard shortcut with platform-specific defaults:

ActionShortcut(
    action_id="save",           # Unique ID (snake_case)
    display_name="Save",        # Human-readable name for UI
    default_linux="Ctrl+S",     # Linux default
    default_windows="Ctrl+S",   # Windows default (falls back to Linux if empty)
    default_macos="Cmd+S",      # macOS default (falls back to Linux if empty)
)

Key Sequence Format

Uses Qt's QKeySequence string format:

• Modifiers: Ctrl, Shift, Alt, Meta
• Special keys: Return (NOT Enter), Backspace, Delete, Tab, Escape, Space, F1-F35
• Navigation: Left, Right, Up, Down, Home, End, PageUp, PageDown
• Combine with +: Ctrl+Shift+S, Alt+Left

Important: Always use "Return" for the Enter key, NOT "Enter" (which maps to numpad Enter on some platforms).

TOML Config File

Auto-created at <config_dir>/<app_name>_shortcuts.toml:

# Edit keyboard shortcuts using Qt QKeySequence string format.
# MODIFIERS: Ctrl, Shift, Alt, Meta (use '+' to combine)
# SPECIAL KEYS: Return (Enter key), Backspace, Delete, Tab, Escape, Space, F1-F35

[shortcuts]
new_file = "Ctrl+N"
save = "Ctrl+S"
quit = "Ctrl+Q"
search = ""        # Empty string disables the shortcut

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Dependencies

[project]
dependencies = [
    "pyside6>=6.10.1",
    "rusty-results>=1.1.1",
    "tomli>=2.2.1",
    "tomli-w>=1.2.0",
]

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Files to Copy

From coding_rules_python/reusable/:

• shortcuts/__init__.py — public API exports
• shortcuts/shortcuts.py — ActionShortcut, ShortcutConfig, ShortcutManager
• shortcuts/README.md — full API reference

From coding_rules_python/reusable_tests/ → copy into your tests/:

• test_shortcuts_base.py — generic tests for ActionShortcut, ShortcutConfig, validation
• test_shortcuts_manager.py — generic tests for ShortcutManager

Update import paths after copying (e.g., reusable.shortcuts → shared.shortcuts, reusable.shortcuts.shortcuts → shared.shortcuts.shortcuts in monkeypatch paths).

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Testing

The reusable tests cover all generic behavior. For app-specific tests:

# tests/test_my_shortcuts.py
from reusable_tests.test_shortcuts_base import (
    TestActionShortcut,
    TestShortcutConfig,
    TestShortcutConfigSave,
    TestValidateKeySequence,
)

# Inherit generic tests — they run automatically
class TestMyActionShortcut(TestActionShortcut):
    pass

# Add app-specific tests
class TestMyAppShortcuts:
    def test_default_shortcuts_are_valid(self):
        from myapp.config import DEFAULT_SHORTCUTS
        for shortcut in DEFAULT_SHORTCUTS:
            assert shortcut.action_id
            assert shortcut.display_name