def __init__(self, window: MainWindow):
super().__init__(title='About')
self.__window = window
self.set_modal(True)
self.set_transient_for(self.__window)
self.set_titlebar(Gtk.HeaderBar(title='About'))
logo = Path(__file__).parent / 'images' / 'mcomix.png'
self.set_logo(ImageTools.pil_to_pixbuf(Image.open(logo)))
self.set_name(Mcomix.APP_NAME.value)
self.set_program_name(Mcomix.APP_NAME.value)
self.set_version(f'Version {Mcomix.VERSION.value}')
self.set_copyright('Copyright (C) 2005-2021')
self.set_license_type(Gtk.License.GPL_2_0)
link = f'https://github.com/thermitegod/{Mcomix.PROG_NAME.value}'
self.set_website(link)
self.set_website_label(link)
self.set_comments(f'{Mcomix.APP_NAME.value} is an image viewer specifically designed '
f'to handle manga, comics, and image files.')
self.show_all()
def draw_histogram(self, height: int = 170, fill: int = 170):
"""
Draw a histogram (RGB) from self.__pixbuf and return it as another pixbuf.
:param height: height of the returned pixbuf
:param fill: determines the color intensity of the filled graphs,
valid values are between 0 and 255.
:returns: modified pixbuf, the returned prixbuf will be 262x<height> px.
"""
self.__pixbuf = ImageTools.static_image(self.__pixbuf)
im = Image.new('RGB', (258, height - 4), (30, 30, 30))
hist_data = ImageTools.pixbuf_to_pil(self.__pixbuf).histogram()
maximum = max(hist_data[:768] + [1])
y_scale = (height - 6) / maximum
r = [int(hist_data[n] * y_scale) for n in range(256)]
g = [int(hist_data[n] * y_scale) for n in range(256, 512)]
b = [int(hist_data[n] * y_scale) for n in range(512, 768)]
im_data = im.getdata()
# Draw the filling colors
for x in range(256):
for y in range(1, max(r[x], g[x], b[x]) + 1):
r_px = fill if y <= r[x] else 0
g_px = fill if y <= g[x] else 0
b_px = fill if y <= b[x] else 0
im_data.putpixel((x + 1, height - 5 - y), (r_px, g_px, b_px))
# Draw the outlines
for x in range(1, 256):
self._im_putpixel(x=x, channel=r, height=height, im_data=im_data)
self._im_putpixel(x=x, channel=g, height=height, im_data=im_data)
self._im_putpixel(x=x, channel=b, height=height, im_data=im_data)
if config['ENHANCE_EXTRA']:
# if True a label with the maximum pixel value will be added to one corner
maxstr = f'max pixel value: {maximum}'
draw = ImageDraw.Draw(im)
draw.rectangle((0, 0, len(maxstr) * 6 + 2, 10), fill=(30, 30, 30))
draw.text((2, 0), maxstr, fill=(255, 255, 255))
im = ImageOps.expand(im, 1, (80, 80, 80))
im = ImageOps.expand(im, 1, (0, 0, 0))
self.__hist_image.set_from_pixbuf(ImageTools.pil_to_pixbuf(im))
def __call__(self, size: tuple, filepath: Path):
"""
Returns a thumbnail pixbuf for <filepath>, transparently handling
both normal image files and archives. Returns None if thumbnail creation
failed, or if the thumbnail creation is run asynchrounosly
:param size: The dimensions for the created thumbnails (width, height).
:param filepath: Path to the image that the thumbnail is generated from.
"""
try:
with LockedFileIO(filepath) as fio:
with Image.open(fio) as im:
im.thumbnail(size, resample=Image.BOX)
pixbuf = ImageTools.pil_to_pixbuf(im)
if ImageTools.pil_has_alpha(im):
pixbuf = ImageTools.add_alpha_background(pixbuf, pixbuf.get_width(), pixbuf.get_height())
except Exception as ex:
logger.error(f'Failed to create thumbnail for image: \'{filepath}\'')
logger.error(f'Exception: {ex}')
pixbuf = None
return pixbuf
