140 lines
4.2 KiB
Python
140 lines
4.2 KiB
Python
import praw
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import textwrap
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import curses
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from content_generators import SubredditGenerator
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from utils import curses_session
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from viewer import BaseViewer
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class SubredditViewer(BaseViewer):
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def __init__(self, stdscr, subreddit_content):
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self.stdscr = stdscr
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self._n_rows = None
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self._n_cols = None
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self._title_window = None
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self._content_window = None
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super(SubredditViewer, self).__init__(subreddit_content)
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self.draw()
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def loop(self):
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while True:
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cmd = self.stdscr.getch()
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if cmd == curses.KEY_UP:
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self.move_cursor_up()
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elif cmd == curses.KEY_DOWN:
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self.move_cursor_down()
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# View submission
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elif cmd in (curses.KEY_RIGHT, ord(' ')):
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pass
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# Enter edit mode to change subreddit
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elif cmd == ord('/'):
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pass
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# Refresh page
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elif cmd in (curses.KEY_F5, ord('r')):
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self.content.reset()
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self.stdscr.clear()
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self.draw()
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# Quit
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elif cmd == ord('q'):
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break
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else:
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curses.beep()
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def draw(self):
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# Refresh window bounds incase the screen has been resized
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self._n_rows, self._n_cols = self.stdscr.getmaxyx()
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self._title_window = self.stdscr.derwin(1, self._n_cols, 0, 0)
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self._content_window = self.stdscr.derwin(1, 0)
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self.draw_header()
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self.draw_content()
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self.add_cursor()
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def draw_content(self):
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"""
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Loop through submissions and fill up the content page.
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"""
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n_rows, n_cols = self._content_window.getmaxyx()
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self._content_window.erase()
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self._subwindows = []
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page_index, cursor_index, inverted = self.nav.position
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step = self.nav.step
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# If not inverted, align the first submission with the top and draw
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# downwards. If inverted, align the first submission with the bottom
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# and draw upwards.
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current_row = n_rows if inverted else 0
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available_rows = n_rows
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for data in self.content.iterate(page_index, step, n_cols-1):
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window_rows = min(available_rows, data['n_rows'])
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start = current_row - window_rows if inverted else current_row
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window = self._content_window.derwin(window_rows, n_cols, start, 0)
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self.draw_submission(window, data, inverted)
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self._subwindows.append(window)
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available_rows -= (window_rows + 1) # Add one for the blank line
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current_row += step * (window_rows + 1)
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if available_rows <= 0:
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break
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self._content_window.refresh()
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def draw_header(self):
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sub_name = self.content.display_name
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self._title_window.erase()
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self._title_window.addnstr(0, 0, sub_name, self._n_cols)
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self._title_window.refresh()
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@staticmethod
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def draw_submission(win, data, inverted=False):
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n_rows, n_cols = win.getmaxyx()
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n_cols -= 1 # Leave space for the cursor in the first column
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# Handle the case where the window is not large enough to fit the data.
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valid_rows = range(0, n_rows)
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offset = 0 if not inverted else -(data['n_rows'] - n_rows)
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n_title = len(data['split_title'])
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for row, text in enumerate(data['split_title'], start=offset):
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if row in valid_rows:
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win.addstr(row, 1, text)
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row = n_title + offset
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if row in valid_rows:
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win.addnstr(row, 1, '{url}'.format(**data), n_cols-1)
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row = n_title + offset + 1
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if row in valid_rows:
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win.addnstr(row, 1, '{created} {comments} {score}'.format(**data), n_cols-1)
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row = n_title + offset + 2
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if row in valid_rows:
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win.addnstr(row, 1, '{author} {subreddit}'.format(**data), n_cols-1)
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def main():
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with curses_session() as stdscr:
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r = praw.Reddit(user_agent='reddit terminal viewer (rtv) v0.0')
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generator = SubredditGenerator(r)
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viewer = SubredditViewer(stdscr, generator)
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viewer.loop()
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if __name__ == '__main__':
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main()
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