apostrophe/apostrophe/inline_preview.py

308 lines
12 KiB
Python

# -*- Mode: Python; coding: utf-8; indent-tabs-mode: nil; tab-width: 4 -*-
# BEGIN LICENSE
# Copyright (C) 2019, Wolf Vollprecht <w.vollprecht@gmail.com>
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
# END LICENSE
import re
import os
import telnetlib
from gettext import gettext as _
from urllib.parse import unquote
import gi
gi.require_version("Gtk", "3.0")
gi.require_version("WebKit2", "4.0")
from gi.repository import Gtk, Gdk, GdkPixbuf, GLib
from gi.repository import WebKit2
from apostrophe import latex_to_PNG, markup_regex
from apostrophe.settings import Settings
class DictAccessor:
reEndResponse = re.compile(br"^[2-5][0-58][0-9] .*\r\n$", re.DOTALL + re.MULTILINE)
reDefinition = re.compile(br"^151(.*?)^\.", re.DOTALL + re.MULTILINE)
def __init__(self, host="pan.alephnull.com", port=2628, timeout=60):
self.telnet = telnetlib.Telnet(host, port)
self.timeout = timeout
self.login_response = self.telnet.expect([self.reEndResponse], self.timeout)[2]
def run_command(self, cmd):
self.telnet.write(cmd.encode("utf-8") + b"\r\n")
return self.telnet.expect([self.reEndResponse], self.timeout)[2]
def get_matches(self, database, strategy, word):
if database in ["", "all"]:
d = "*"
else:
d = database
if strategy in ["", "default"]:
s = "."
else:
s = strategy
w = word.replace("\"", r"\\\"")
tsplit = self.run_command("MATCH {} {} \"{}\"".format(d, s, w)).splitlines()
mlist = list()
if tsplit[-1].startswith(b"250 ok") and tsplit[0].startswith(b"1"):
mlines = tsplit[1:-2]
for line in mlines:
lsplit = line.strip().split()
db = lsplit[0]
word = unquote(" ".join(lsplit[1:]))
mlist.append((db, word))
return mlist
def get_definition(self, database, word):
if database in ["", "all"]:
d = "*"
else:
d = database
w = word.replace("\"", r"\\\"")
dsplit = self.run_command("DEFINE {} \"{}\"".format(d, w)).splitlines(True)
dlist = list()
if dsplit[-1].startswith(b"250 ok") and dsplit[0].startswith(b"1"):
dlines = dsplit[1:-1]
dtext = b"".join(dlines)
dlist = [dtext]
return dlist
def close(self):
t = self.run_command("QUIT")
self.telnet.close()
return t
def parse_wordnet(self, response):
# consisting of group (n,v,adj,adv)
# number, description, examples, synonyms, antonyms
lines = response.splitlines()
lines = lines[2:]
lines = " ".join(lines)
lines = re.sub(r"\s+", " ", lines).strip()
lines = re.split(r"( adv | adj | n | v |^adv |^adj |^n |^v )", lines)
res = []
act_res = {"defs": [], "class": "none", "num": "None"}
for l in lines:
l = l.strip()
if not l:
continue
if l in ["adv", "adj", "n", "v"]:
if act_res:
res.append(act_res.copy())
act_res = {"defs": [], "class": l}
else:
ll = re.split(r"(?: |^)(\d): ", l)
act_def = {}
for lll in ll:
if lll.strip().isdigit() or not lll.strip():
if "description" in act_def and act_def["description"]:
act_res["defs"].append(act_def.copy())
act_def = {"num": lll}
continue
a = re.findall(r"(\[(syn|ant): (.+?)\] ??)+", lll)
for n in a:
if n[1] == "syn":
act_def["syn"] = re.findall(r"{(.*?)}.*?", n[2])
else:
act_def["ant"] = re.findall(r"{(.*?)}.*?", n[2])
tbr = re.search(r"\[.+\]", lll)
if tbr:
lll = lll[:tbr.start()]
lll = lll.split(";")
act_def["examples"] = []
act_def["description"] = []
for llll in lll:
llll = llll.strip()
if llll.strip().startswith("\""):
act_def["examples"].append(llll)
else:
act_def["description"].append(llll)
if act_def and "description" in act_def:
act_res["defs"].append(act_def.copy())
res.append(act_res.copy())
return res
def get_dictionary(term):
da = DictAccessor()
output = da.get_definition("wn", term)
if output:
output = output[0]
else:
return None
return da.parse_wordnet(output.decode(encoding="UTF-8"))
class InlinePreview:
WIDTH = 400
HEIGHT = 300
def __init__(self, text_view):
self.settings = Settings.new()
self.text_view = text_view
self.text_view.connect("button-press-event", self.on_button_press_event)
self.text_buffer = text_view.get_buffer()
self.cursor_mark = self.text_buffer.create_mark(
"click", self.text_buffer.get_iter_at_mark(self.text_buffer.get_insert()))
self.latex_converter = latex_to_PNG.LatexToPNG()
self.characters_per_line = self.settings.get_int("characters-per-line")
self.popover = Gtk.Popover.new(self.text_view)
self.popover.get_style_context().add_class("quick-preview-popup")
self.popover.set_modal(True)
self.preview_fns = {
markup_regex.MATH: self.get_view_for_math,
markup_regex.IMAGE: self.get_view_for_image,
markup_regex.LINK: self.get_view_for_link,
markup_regex.LINK_ALT: self.get_view_for_link,
markup_regex.FOOTNOTE_ID: self.get_view_for_footnote,
re.compile(r"(?P<text>\w+)"): self.get_view_for_lexikon
}
def on_button_press_event(self, _text_view, event):
if event.button == 1 and event.state & Gdk.ModifierType.CONTROL_MASK:
x, y = self.text_view.window_to_buffer_coords(2, int(event.x), int(event.y))
self.text_buffer.move_mark(
self.cursor_mark, self.text_view.get_iter_at_location(x, y).iter)
self.open_popover(self.text_view)
def get_view_for_math(self, match):
success, result = self.latex_converter.generatepng(match.group("text"))
if success:
return Gtk.Image.new_from_file(result)
else:
error = _("Formula looks incorrect:")
error += "\n\n{}".format(result)
return Gtk.Label(label=error)
def get_view_for_image(self, match):
path = match.group("url")
if path.startswith(("https://", "http://", "www.")):
return self.get_view_for_link(match)
if path.startswith(("file://")):
path = path[7:]
if not path.startswith(("/", "file://")):
path = os.path.join(self.settings.get_string("open-file-path"), path)
path = unquote(path)
return Gtk.Image.new_from_pixbuf(
GdkPixbuf.Pixbuf.new_from_file_at_size(path, self.WIDTH, self.HEIGHT))
def get_view_for_link(self, match):
url = match.group("url")
web_view = WebKit2.WebView(zoom_level=0.3125) # ~1280x960
web_view.set_size_request(self.WIDTH, self.HEIGHT)
if GLib.uri_parse_scheme(url) is None:
url = "http://{}".format(url)
web_view.load_uri(url)
return web_view
def get_view_for_footnote(self, match):
footnote_id = match.group("id")
fn_matches = re.finditer(markup_regex.FOOTNOTE, self.text_buffer.props.text)
for fn_match in fn_matches:
if fn_match.group("id") == footnote_id:
if fn_match:
footnote = re.sub("\n[\t ]+", "\n", fn_match.group("text"))
else:
footnote = _("No matching footnote found")
label = Gtk.Label(label=footnote)
label.set_max_width_chars(self.characters_per_line)
label.set_line_wrap(True)
return label
return None
def get_view_for_lexikon(self, match):
term = match.group("text")
lexikon_dict = get_dictionary(term)
if lexikon_dict:
grid = Gtk.Grid.new()
grid.get_style_context().add_class("lexikon")
grid.set_row_spacing(2)
grid.set_column_spacing(4)
i = 0
for entry in lexikon_dict:
if not entry["defs"]:
continue
elif entry["class"].startswith("n"):
word_type = _("noun")
elif entry["class"].startswith("v"):
word_type = _("verb")
elif entry["class"].startswith("adj"):
word_type = _("adjective")
elif entry["class"].startswith("adv"):
word_type = _("adverb")
else:
continue
vocab_label = Gtk.Label.new(term + " ~ " + word_type)
vocab_label.get_style_context().add_class("header")
if i == 0:
vocab_label.get_style_context().add_class("first")
vocab_label.set_halign(Gtk.Align.START)
vocab_label.set_justify(Gtk.Justification.LEFT)
grid.attach(vocab_label, 0, i, 3, 1)
for definition in entry["defs"]:
i = i + 1
num_label = Gtk.Label.new(definition["num"] + ".")
num_label.get_style_context().add_class("number")
num_label.set_valign(Gtk.Align.START)
grid.attach(num_label, 0, i, 1, 1)
def_label = Gtk.Label(label=" ".join(definition["description"]))
def_label.get_style_context().add_class("description")
def_label.set_halign(Gtk.Align.START)
def_label.set_max_width_chars(self.characters_per_line)
def_label.set_line_wrap(True)
def_label.set_justify(Gtk.Justification.FILL)
grid.attach(def_label, 1, i, 1, 1)
i = i + 1
if i > 0:
return grid
return None
def open_popover(self, _editor, _data=None):
start_iter = self.text_buffer.get_iter_at_mark(self.cursor_mark)
line_offset = start_iter.get_line_offset()
end_iter = start_iter.copy()
start_iter.set_line_offset(0)
end_iter.forward_to_line_end()
text = self.text_buffer.get_text(start_iter, end_iter, False)
for regex, get_view_fn in self.preview_fns.items():
matches = re.finditer(regex, text)
for match in matches:
if match.start() <= line_offset <= match.end():
prev_view = self.popover.get_child()
if prev_view:
prev_view.destroy()
view = get_view_fn(match)
view.show_all()
self.popover.add(view)
rect = self.text_view.get_iter_location(
self.text_buffer.get_iter_at_mark(self.cursor_mark))
rect.x, rect.y = self.text_view.buffer_to_window_coords(
Gtk.TextWindowType.TEXT, rect.x, rect.y)
self.popover.set_pointing_to(rect)
GLib.idle_add(self.popover.popup) # TODO: It doesn't popup without idle_add.
return