350 lines
11 KiB
Python
350 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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import webbrowser
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from textwrap import wrap
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from toot.exceptions import ConsoleError
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from toot.ui.utils import draw_horizontal_divider, draw_lines
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from toot.utils import format_content, trunc
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# Attempt to load curses, which is not available on windows
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try:
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import curses
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except ImportError as e:
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raise ConsoleError("Curses is not available on this platform")
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class Color:
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@classmethod
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def setup_palette(class_):
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curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLACK)
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curses.init_pair(2, curses.COLOR_BLUE, curses.COLOR_BLACK)
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curses.init_pair(3, curses.COLOR_GREEN, curses.COLOR_BLACK)
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curses.init_pair(4, curses.COLOR_YELLOW, curses.COLOR_BLACK)
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curses.init_pair(5, curses.COLOR_RED, curses.COLOR_BLACK)
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curses.init_pair(6, curses.COLOR_WHITE, curses.COLOR_BLUE)
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class_.WHITE = curses.color_pair(1)
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class_.BLUE = curses.color_pair(2)
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class_.GREEN = curses.color_pair(3)
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class_.YELLOW = curses.color_pair(4)
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class_.RED = curses.color_pair(5)
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class_.WHITE_ON_BLUE = curses.color_pair(6)
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class HeaderWindow:
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def __init__(self, height, width, y, x):
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self.window = curses.newwin(height, width, y, x)
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self.height = height
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self.width = width
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def draw(self):
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self.window.erase()
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self.window.addstr(0, 1, "toot - your Mastodon command line interface", Color.YELLOW)
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self.window.addstr(1, 1, "https://github.com/ihabunek/toot")
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self.window.refresh()
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class FooterWindow:
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def __init__(self, height, width, y, x):
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self.window = curses.newwin(height, width, y, x)
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self.height = height
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self.width = width
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def draw_status(self, selected, count):
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text = "Showing toot {} of {}".format(selected + 1, count)
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text = trunc(text, self.width - 1).ljust(self.width - 1)
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self.window.addstr(0, 0, text, Color.WHITE_ON_BLUE | curses.A_BOLD)
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self.window.refresh()
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def draw_message(self, text, color):
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text = trunc(text, self.width - 1).ljust(self.width - 1)
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self.window.addstr(1, 0, text, color)
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self.window.refresh()
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def clear_message(self):
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self.window.addstr(0, 0, " " * self.width)
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self.window.refresh()
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class StatusDetailWindow:
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"""Window which shows details of a status (right side)"""
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def __init__(self, height, width, y, x):
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self.window = curses.newwin(height, width, y, x)
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self.height = height
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self.width = width
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def content_lines(self, status):
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acct = status['account']['acct']
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name = status['account']['display_name']
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yield name, Color.YELLOW
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yield "@" + acct, Color.GREEN
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yield
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text_width = self.width - 4
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for line in status['lines']:
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wrapped_lines = wrap(line, text_width) if line else ['']
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for wrapped_line in wrapped_lines:
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yield wrapped_line.ljust(text_width)
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if status['media_attachments']:
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yield
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yield "Media:"
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for attachment in status['media_attachments']:
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url = attachment['text_url'] or attachment['url']
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for line in wrap(url, text_width):
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yield line
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def footer_lines(self, status):
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if status['url'] is not None:
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yield status['url']
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if status['boosted_by']:
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acct = status['boosted_by']['acct']
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yield "Boosted by @{}".format(acct), Color.BLUE
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def draw(self, status):
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self.window.erase()
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self.window.box()
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content = self.content_lines(status)
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footer = self.footer_lines(status)
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y = draw_lines(self.window, content, 2, 1, Color.WHITE)
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draw_horizontal_divider(self.window, y)
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draw_lines(self.window, footer, 2, y + 1, Color.WHITE)
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self.window.refresh()
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class TimelineApp:
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def __init__(self, status_generator):
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self.status_generator = status_generator
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self.statuses = []
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self.selected = None
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self.stdscr = None
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self.scroll_pos = 0
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def run(self):
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curses.wrapper(self._wrapped_run)
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def _wrapped_run(self, stdscr):
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self.stdscr = stdscr
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self.setup_windows()
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Color.setup_palette()
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# Load some data and redraw
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self.fetch_next()
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self.selected = 0
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self.full_redraw()
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self.loop()
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def setup_windows(self):
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screen_height, screen_width = self.stdscr.getmaxyx()
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if screen_width < 60:
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raise ConsoleError("Terminal screen is too narrow, toot curses requires at least 60 columns to display properly.")
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self.left_width = max(min(screen_width // 3, 60), 30)
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self.right_width = screen_width - self.left_width
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self.header = HeaderWindow(2, screen_width, 0, 0)
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self.footer = FooterWindow(2, screen_width, screen_height - 2, 0)
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self.left = curses.newpad(screen_height - 4, self.left_width)
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self.right = StatusDetailWindow(screen_height - 4, self.right_width, 2, self.left_width)
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def loop(self):
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while True:
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key = self.left.getkey()
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if key.lower() == 'q':
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return
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elif key.lower() == 'v':
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status = self.get_selected_status()
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if status:
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webbrowser.open(status['url'])
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elif key.lower() == 'j' or key == 'B':
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self.select_next()
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elif key.lower() == 'k' or key == 'A':
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self.select_previous()
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elif key == 'KEY_RESIZE':
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self.setup_windows()
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self.full_redraw()
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def scroll_to(self, index):
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self.scroll_pos = index
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height, width = self.stdscr.getmaxyx()
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self.left.refresh(3 * index, 0, 2, 0, height - 4, self.left_width)
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def scroll_up(self):
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if self.scroll_pos > 0:
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self.scroll_to(self.scroll_pos - 1)
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def scroll_down(self):
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self.scroll_to(self.scroll_pos + 1)
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def scroll_refresh(self):
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self.scroll_to(self.scroll_pos)
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def select_previous(self):
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"""Move to the previous status in the timeline."""
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self.footer.clear_message()
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if self.selected == 0:
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self.footer.draw_message("Cannot move beyond first toot.", Color.GREEN)
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return
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old_index = self.selected
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new_index = self.selected - 1
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self.selected = new_index
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self.redraw_after_selection_change(old_index, new_index)
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# Scroll if required
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if new_index < self.scroll_pos:
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self.scroll_up()
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else:
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self.scroll_refresh()
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def select_next(self):
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"""Move to the next status in the timeline."""
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self.footer.clear_message()
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# Load more statuses if no more are available
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if self.selected + 1 >= len(self.statuses):
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self.fetch_next()
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self.draw_statuses(self.left, self.selected + 1)
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self.draw_footer_status()
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old_index = self.selected
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new_index = self.selected + 1
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self.selected = new_index
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self.redraw_after_selection_change(old_index, new_index)
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# Scroll if required
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if new_index >= self.scroll_pos + self.get_page_size():
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self.scroll_down()
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else:
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self.scroll_refresh()
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def get_page_size(self):
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"""Calculate how many statuses fit on one page (3 lines per status)"""
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height = self.right.window.getmaxyx()[0] - 2 # window height - borders
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return height // 3
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def redraw_after_selection_change(self, old_index, new_index):
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old_status = self.statuses[old_index]
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new_status = self.statuses[new_index]
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# Perform a partial redraw
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self.draw_status_row(self.left, old_status, old_index, False)
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self.draw_status_row(self.left, new_status, new_index, True)
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self.right.draw(new_status)
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self.draw_footer_status()
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def fetch_next(self):
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try:
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self.footer.draw_message("Loading toots...", Color.BLUE)
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statuses = next(self.status_generator)
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except StopIteration:
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return None
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for status in statuses:
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self.statuses.append(parse_status(status))
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self.footer.draw_message("Loaded {} toots".format(len(statuses)), Color.GREEN)
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return len(statuses)
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def full_redraw(self):
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"""Perform a full redraw of the UI."""
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self.header.draw()
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self.draw_footer_status()
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self.left.clear()
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self.left.box()
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self.draw_statuses(self.left)
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self.right.draw(self.get_selected_status())
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self.header.draw()
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self.scroll_refresh()
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def get_selected_status(self):
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if len(self.statuses) > self.selected:
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return self.statuses[self.selected]
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def draw_status_row(self, window, status, index, highlight=False):
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offset = 3 * index
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height, width = window.getmaxyx()
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color = Color.BLUE if highlight else 0
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date, time = status['created_at']
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window.addstr(offset + 1, 2, date, color)
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window.addstr(offset + 2, 2, time, color)
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trunc_width = width - 16
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acct = trunc(status['account']['acct'], trunc_width).ljust(trunc_width)
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display_name = trunc(status['account']['display_name'], trunc_width).ljust(trunc_width)
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window.addstr(offset + 1, 14, acct, color)
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window.addstr(offset + 2, 14, display_name, color)
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window.addstr(offset + 3, 1, '─' * (width - 2))
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screen_height, screen_width = self.stdscr.getmaxyx()
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window.refresh(0, 0, 2, 0, screen_height - 4, self.left_width)
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def draw_statuses(self, window, starting=0):
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# Resize window to accomodate statuses if required
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height, width = window.getmaxyx()
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new_height = len(self.statuses) * 3 + 1
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if new_height > height:
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window.resize(new_height, width)
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window.box()
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for index, status in enumerate(self.statuses):
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if index >= starting:
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highlight = self.selected == index
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self.draw_status_row(window, status, index, highlight)
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def draw_footer_status(self):
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self.footer.draw_status(self.selected, len(self.statuses))
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def parse_status(status):
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_status = status.get('reblog') or status
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account = parse_account(_status['account'])
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lines = list(format_content(_status['content']))
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created_at = status['created_at'][:19].split('T')
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boosted_by = parse_account(status['account']) if status['reblog'] else None
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return {
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'account': account,
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'boosted_by': boosted_by,
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'created_at': created_at,
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'lines': lines,
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'media_attachments': _status['media_attachments'],
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'url': _status['url'],
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}
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def parse_account(account):
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return {
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'id': account['id'],
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'acct': account['acct'],
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'display_name': account['display_name'],
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}
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