A Python library that embeds the Monaco Editor (the editor that powers VS Code) into Qt applications using PySide6/PyQt6.

• 🚀 Monaco Editor Integration - Full Monaco Editor with syntax highlighting, tab-completion, and more
• 🔌 Language Server Protocol Support - Built-in LSP client for advanced language features
• 🌍 Cross-Platform - Works on macOS and Linux.
• 🎨 Qt Integration - Seamless integration with Qt applications
• 📦 Easy Installation - Available on PyPI with minimal dependencies

pip install qtmonaco

from qtpy.QtWidgets import QApplication
from qtmonaco import Monaco

qapp = QApplication([])
widget = Monaco()
# set the default size
widget.resize(800, 600)
widget.set_language("python")
widget.set_theme("vs-dark")
widget.editor.set_minimap_enabled(False)
widget.set_text(
    """
import numpy as np
from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from bec_lib.devicemanager import DeviceContainer
    from bec_lib.scans import Scans
    dev: DeviceContainer
    scans: Scans

#######################################
########## User Script #####################
#######################################

# This is a comment
def hello_world():
    print("Hello, world!")
            """
)

widget.show()
qapp.exec_()

• Syntax Highlighting - Support for 80+ programming languages
• Code Folding - Collapse and expand code sections
• Find & Replace - Advanced search and replace functionality
• Multiple Cursors - Edit multiple locations simultaneously
• Minimap - Overview of the entire file
• Command Palette - Quick access to editor commands

QTMonaco comes with a built-in LSP support for python (pylsp). Extended support is planned.

• Native Qt Widget - Works seamlessly with other Qt widgets
• Signal/Slot Support - Connect to text changes, cursor movements, etc.
• Theming - Integrates with Qt application themes
• Resource Management - Efficient handling of editor assets

# Text operations
monaco.set_text(content: str)
monaco.get_text() -> str
monaco.set_cursor(line: int, column: int)  # Set cursor position
monaco.current_cursor() -> tuple[int, int]  # Get current cursor position

# Language and syntax
monaco.set_language(language: str)
monaco.get_language() -> str

# Editor configuration
monaco.set_theme(theme: str)  # "vs", "vs-dark", "hc-black"
monaco.get_theme() -> str
monaco.set_read_only(read_only: bool)
monaco.set_minimap_enabled(enabled: bool)

This project is licensed under the BSD 3-Clause License - see the LICENSE file for details.

• Monaco Editor: Licensed under the MIT License
• Other dependencies retain their respective licenses

• monaco-qt - The original project that inspired QTMonaco
• Monaco Editor - The amazing editor that powers VS Code
• Language Server Protocol - Microsoft's LSP for consistent language support
• PySide6/PyQt - Qt bindings for Python
• Vite - Fast build tool for modern web development