Files
emacs/lisp/emacs-application-framework/app/image-viewer/buffer.py
2021-01-30 14:52:51 +01:00

110 lines
3.7 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2018 Andy Stewart
#
# Author: Andy Stewart <lazycat.manatee@gmail.com>
# Maintainer: Andy Stewart <lazycat.manatee@gmail.com>
#
# 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 3 of the License, or
# 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, see <http://www.gnu.org/licenses/>.
from PyQt5.QtCore import QUrl
from PyQt5.QtGui import QColor
from core.browser import BrowserBuffer
from core.utils import interactive
from pathlib import Path
import os
class AppBuffer(BrowserBuffer):
def __init__(self, buffer_id, url, config_dir, arguments, emacs_var_dict, module_path):
BrowserBuffer.__init__(self, buffer_id, url, config_dir, arguments, emacs_var_dict, module_path, False)
self.index_file = os.path.join(os.path.dirname(__file__), "index.html")
self.load_image(url)
def load_image(self, url):
self.url = url
self.parent_dir = os.path.abspath(os.path.join(url, os.pardir))
self.image_name = os.path.basename(url)
with open(self.index_file, "r") as f:
html = f.read().replace("%1", os.path.join(os.path.dirname(__file__))).replace("%2", os.path.join("file://", url))
self.buffer_widget.setHtml(html, QUrl("file://"))
def is_image_file(self, f):
return Path(f).suffix[1:].lower() in ["jpg", "jpeg", "png", "bmp", "gif", "svg", "webp"]
def get_same_dir_images(self):
files = [f for f in os.listdir(self.parent_dir) if os.path.isfile(os.path.join(self.parent_dir, f))]
return list(filter(self.is_image_file, files))
def load_next_image(self):
images = self.get_same_dir_images()
if self.image_name in images:
image_index = images.index(self.image_name)
if image_index == len(images) - 1:
image_index = 0
else:
image_index += 1
self.image_name = images[image_index]
self.load_image(os.path.join(self.parent_dir, self.image_name))
self.change_title(self.image_name)
def load_prev_image(self):
images = self.get_same_dir_images()
if self.image_name in images:
image_index = images.index(self.image_name)
if image_index == 0:
image_index = len(images) - 1
else:
image_index -= 1
self.image_name = images[image_index]
self.load_image(os.path.join(self.parent_dir, self.image_name))
self.change_title(self.image_name)
@interactive
def rotate_left(self):
self.buffer_widget.eval_js("rotate_left();")
@interactive
def rotate_right(self):
self.buffer_widget.eval_js("rotate_right();")
@interactive
def zoom_out(self):
self.buffer_widget.eval_js("zoom_out();")
@interactive
def zoom_in(self):
self.buffer_widget.eval_js("zoom_in();")
@interactive
def zoom_reset(self):
self.buffer_widget.eval_js("zoom_reset();")
@interactive
def zoom_toggle(self):
self.buffer_widget.eval_js("zoom_toggle();")
@interactive
def flip_horizontal(self):
self.buffer_widget.eval_js("flip_horizontal();")
@interactive
def flip_vertical(self):
self.buffer_widget.eval_js("flip_vertical();")