33d035aac7
Currently when zooming text with something selected, only the selected text is zoomed. There doesn't seem to be any real use for this behavior. Instead just zoom the full document regardless of selection. This also simplifies the plugin a good bit. Closes: https://github.com/linuxmint/xed/issues/327
120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# documenthelper.py - Document helper
|
|
#
|
|
# Copyright (C) 2010 - Jesse van den Kieboom
|
|
# Copyright (C) 2017 - Linux Mint team
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY 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, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
# Boston, MA 02110-1301, USA.
|
|
|
|
|
|
from .signals import Signals
|
|
from gi.repository import Gtk, Gdk, Pango
|
|
|
|
MAX_FONT_SIZE = 30
|
|
MIN_FONT_SIZE = 5
|
|
|
|
class DocumentHelper(Signals):
|
|
def __init__(self, view):
|
|
Signals.__init__(self)
|
|
|
|
self._view = view
|
|
|
|
self.connect_signal(self._view, 'scroll-event', self.on_scroll_event)
|
|
self.connect_signal(self._view, 'button-press-event', self.on_button_press_event)
|
|
|
|
self._view.textsize_document_helper = self
|
|
|
|
self._default_font = None
|
|
self._last_font = None
|
|
|
|
def stop(self):
|
|
if self._default_font:
|
|
self._view.override_font(self._default_font)
|
|
|
|
self.disconnect_signals(self._view)
|
|
|
|
self._view.textsize_document_helper = None
|
|
|
|
def update_default_font(self):
|
|
context = self._view.get_style_context()
|
|
description = context.get_font(context.get_state()).copy()
|
|
|
|
if not self._last_font or description.hash() != self._last_font.hash():
|
|
self._default_font = description
|
|
|
|
def set_font_size(self, amount):
|
|
self.update_default_font()
|
|
|
|
context = self._view.get_style_context()
|
|
description = context.get_font(context.get_state()).copy()
|
|
|
|
buf = self._view.get_buffer()
|
|
size = description.get_size() / Pango.SCALE
|
|
|
|
if size >= MAX_FONT_SIZE and amount == 1:
|
|
return;
|
|
if size <= MIN_FONT_SIZE and amount == -1:
|
|
return;
|
|
|
|
description.set_size(max(1, (size + amount)) * Pango.SCALE)
|
|
|
|
self._view.override_font(description)
|
|
self._last_font = description
|
|
|
|
def larger_text(self):
|
|
self.set_font_size(1)
|
|
|
|
def smaller_text(self):
|
|
self.set_font_size(-1)
|
|
|
|
def normal_size(self):
|
|
self.update_default_font()
|
|
|
|
buf = self._view.get_buffer()
|
|
|
|
self._view.override_font(self._default_font)
|
|
self._last_font = self._default_font
|
|
|
|
def on_scroll_event(self, view, event):
|
|
state = event.state & Gtk.accelerator_get_default_mod_mask()
|
|
|
|
if state != Gdk.ModifierType.CONTROL_MASK:
|
|
return False
|
|
|
|
if event.direction == Gdk.ScrollDirection.UP:
|
|
self.larger_text()
|
|
return True
|
|
elif event.direction == Gdk.ScrollDirection.DOWN:
|
|
self.smaller_text()
|
|
return True
|
|
elif event.direction == Gdk.ScrollDirection.SMOOTH:
|
|
if event.delta_y > 0:
|
|
self.smaller_text()
|
|
elif event.delta_y < 0:
|
|
self.larger_text()
|
|
|
|
return False
|
|
|
|
def on_button_press_event(self, view, event):
|
|
state = event.state & Gtk.accelerator_get_default_mod_mask()
|
|
|
|
if state == Gdk.ModifierType.CONTROL_MASK and event.button == 2:
|
|
self.normal_size()
|
|
return True
|
|
else:
|
|
return False
|