| | from __future__ import annotations |
| |
|
| | import os |
| | import shlex |
| | from typing import Iterable |
| |
|
| | from textual.app import App |
| | from textual._import_app import import_app |
| |
|
| |
|
| | |
| | |
| | def format_svg(source, language, css_class, options, md, attrs, **kwargs) -> str: |
| | """A superfences formatter to insert an SVG screenshot.""" |
| |
|
| | try: |
| | cmd: list[str] = shlex.split(attrs["path"]) |
| | path = cmd[0] |
| |
|
| | _press = attrs.get("press", None) |
| | press = [*_press.split(",")] if _press else ["_"] |
| | title = attrs.get("title") |
| |
|
| | print(f"screenshotting {path!r}") |
| |
|
| | cwd = os.getcwd() |
| | try: |
| | rows = int(attrs.get("lines", 24)) |
| | columns = int(attrs.get("columns", 80)) |
| | svg = take_svg_screenshot( |
| | None, path, press, title, terminal_size=(rows, columns) |
| | ) |
| | finally: |
| | os.chdir(cwd) |
| |
|
| | assert svg is not None |
| | return svg |
| |
|
| | except Exception as error: |
| | import traceback |
| |
|
| | traceback.print_exception(error) |
| |
|
| |
|
| | def take_svg_screenshot( |
| | app: App | None = None, |
| | app_path: str | None = None, |
| | press: Iterable[str] = ("_",), |
| | title: str | None = None, |
| | terminal_size: tuple[int, int] = (24, 80), |
| | ) -> str: |
| | """ |
| | |
| | Args: |
| | app: An app instance. Must be supplied if app_path is not. |
| | app_path: A path to an app. Must be supplied if app is not. |
| | press: Key presses to run before taking screenshot. "_" is a short pause. |
| | title: The terminal title in the output image. |
| | terminal_size: A pair of integers (rows, columns), representing terminal size. |
| | |
| | Returns: |
| | str: An SVG string, showing the content of the terminal window at the time |
| | the screenshot was taken. |
| | |
| | """ |
| | rows, columns = terminal_size |
| |
|
| | os.environ["COLUMNS"] = str(columns) |
| | os.environ["LINES"] = str(rows) |
| |
|
| | if app is None: |
| | app = import_app(app_path) |
| |
|
| | if title is None: |
| | title = app.title |
| |
|
| | app.run( |
| | quit_after=5, |
| | press=press or ["ctrl+c"], |
| | headless=True, |
| | screenshot=True, |
| | screenshot_title=title, |
| | ) |
| | svg = app._screenshot |
| | return svg |
| |
|
| |
|
| | def rich(source, language, css_class, options, md, attrs, **kwargs) -> str: |
| | """A superfences formatter to insert an SVG screenshot.""" |
| |
|
| | import io |
| |
|
| | from rich.console import Console |
| |
|
| | title = attrs.get("title", "Rich") |
| |
|
| | console = Console( |
| | file=io.StringIO(), |
| | record=True, |
| | force_terminal=True, |
| | color_system="truecolor", |
| | ) |
| | error_console = Console(stderr=True) |
| |
|
| | globals: dict = {} |
| | try: |
| | exec(source, globals) |
| | except Exception: |
| | error_console.print_exception() |
| | |
| |
|
| | if "output" in globals: |
| | console.print(globals["output"]) |
| | output_svg = console.export_svg(title=title) |
| | return output_svg |
| |
|
