def enhance(self, pixbuf):
"""
Return an "enhanced" version of <pixbuf>
"""
if (self.brightness != 1.0 or self.contrast != 1.0 or
self.saturation != 1.0 or self.sharpness != 1.0 or
self.autocontrast):
return ImageTools.enhance(pixbuf, self.brightness, self.contrast,
self.saturation, self.sharpness, self.autocontrast)
return pixbuf
def _draw_image(self, scroll_to: int):
# hides old images before showing new ones
# also if in double page mode and only a single
# image is going to be shown, prevents a ghost second image
for i in self.__images:
i.clear()
if not self.__file_handler.get_file_loaded():
self.__thumbnailsidebar.hide()
self.__waiting_for_redraw = False
return
self.__thumbnailsidebar.show()
if not self.__image_handler.page_is_available():
# Save scroll destination for when the page becomes available.
self.__last_scroll_destination = scroll_to
self.__waiting_for_redraw = False
return
distribution_axis = ZoomAxis.DISTRIBUTION.value
alignment_axis = ZoomAxis.ALIGNMENT.value
# XXX limited to at most 2 pages
pixbuf_count = 2 if ViewState.is_displaying_double else 1
pixbuf_count_iter = range(pixbuf_count)
pixbuf_list = list(self.__image_handler.get_pixbufs(pixbuf_count))
do_not_transform = [ImageTools.disable_transform(x) for x in pixbuf_list]
size_list = [[pixbuf.get_width(), pixbuf.get_height()] for pixbuf in pixbuf_list]
# Rotation handling:
# - apply Exif rotation on individual images
# - apply manual rotation on whole page
orientation = self.__page_orientation
if config['AUTO_ROTATE_FROM_EXIF']:
rotation_list = [ImageTools.get_implied_rotation(pixbuf) for pixbuf in pixbuf_list]
for i in pixbuf_count_iter:
if rotation_list[i] in (90, 270):
size_list[i].reverse()
else:
# no auto rotation
rotation_list = [0] * len(pixbuf_list)
rotation = config['ROTATION'] % 360
match rotation:
case (90 | 270):
distribution_axis, alignment_axis = alignment_axis, distribution_axis
orientation.reverse()
for i in pixbuf_count_iter:
size_list[i].reverse()
case 180:
orientation.reverse()
# Recompute the visible area size
viewport_size = self.get_visible_area_size()
zoom_dummy_size = list(viewport_size)
scaled_sizes = self.__zoom.get_zoomed_size(size_list, zoom_dummy_size, distribution_axis, do_not_transform)
self.__layout = FiniteLayout(scaled_sizes, viewport_size, orientation, distribution_axis, alignment_axis)
self.__main_layout.set_size(*self.__layout.get_union_box().get_size())
content_boxes = self.__layout.get_content_boxes()
for i in pixbuf_count_iter:
rotation_list[i] = (rotation_list[i] + rotation) % 360
pixbuf_list[i] = ImageTools.fit_pixbuf_to_rectangle(pixbuf_list[i], scaled_sizes[i], rotation_list[i])
pixbuf_list[i] = ImageTools.enhance(pixbuf_list[i])
ImageTools.set_from_pixbuf(self.__images[i], pixbuf_list[i])
self.__main_layout.move(self.__images[i], *content_boxes[i].get_position())
self.__images[i].show()
# Reset orientation so scrolling behaviour is sane.
self.__layout.set_orientation(self.__page_orientation)
if scroll_to is not None:
destination = (scroll_to,) * 2
self.scroll_to_predefined(destination)
# update statusbar
resolutions = [(*size, scaled_size[0] / size[0]) for scaled_size, size in zip(scaled_sizes, size_list, strict=True)]
if ViewState.is_manga_mode:
resolutions.reverse()
self.__statusbar.set_resolution(resolutions)
self.__statusbar.update()
self.__waiting_for_redraw = False
def _add_subpixbuf(self, canvas, x: int, y: int, image_size: tuple, source_pixbuf):
"""
Copy a subpixbuf from <source_pixbuf> to <canvas> as it should
be in the lens if the coordinates <x>, <y> are the mouse pointer
position on the main window layout area.
The displayed image (scaled from the <source_pixbuf>) must have
size <image_size>
"""
# Prevent division by zero exceptions further down
if not image_size[0]:
return
# FIXME This merely prevents Errors being raised if source_pixbuf is an
# animation. The result might be broken, though, since animation,
# rotation etc. might not match or will be ignored:
source_pixbuf = ImageTools.static_image(source_pixbuf)
rotation = config['ROTATION']
if config['AUTO_ROTATE_FROM_EXIF']:
rotation += ImageTools.get_implied_rotation(source_pixbuf)
rotation %= 360
if rotation in (90, 270):
scale = source_pixbuf.get_height() / image_size[0]
else:
scale = source_pixbuf.get_width() / image_size[0]
x *= scale
y *= scale
source_mag = config['LENS_MAGNIFICATION'] / scale
width = height = config['LENS_SIZE'] / source_mag
paste_left = x > width / 2
paste_top = y > height / 2
dest_x = max(0, int(math.ceil((width / 2 - x) * source_mag)))
dest_y = max(0, int(math.ceil((height / 2 - y) * source_mag)))
match rotation:
case 90:
x, y = y, source_pixbuf.get_height() - x
case 180:
x = source_pixbuf.get_width() - x
y = source_pixbuf.get_height() - y
case 270:
x, y = source_pixbuf.get_width() - y, x
src_x = x - width / 2
src_y = y - height / 2
if src_x < 0:
width += src_x
src_x = 0
if src_y < 0:
height += src_y
src_y = 0
width = max(0, min(source_pixbuf.get_width() - src_x, width))
height = max(0, min(source_pixbuf.get_height() - src_y, height))
if width < 1 or height < 1:
return
subpixbuf = source_pixbuf.new_subpixbuf(int(src_x), int(src_y), int(width), int(height))
subpixbuf = subpixbuf.scale_simple(
int(math.ceil(source_mag * subpixbuf.get_width())),
int(math.ceil(source_mag * subpixbuf.get_height())),
config['GDK_SCALING_FILTER'])
subpixbuf = ImageTools.rotate_pixbuf(subpixbuf, rotation)
subpixbuf = ImageTools.enhance(subpixbuf)
if paste_left:
dest_x = 0
else:
dest_x = min(canvas.get_width() - subpixbuf.get_width(), dest_x)
if paste_top:
dest_y = 0
else:
dest_y = min(canvas.get_height() - subpixbuf.get_height(), dest_y)
if subpixbuf.get_has_alpha():
subpixbuf = ImageTools.add_alpha_background(subpixbuf, subpixbuf.get_width(), subpixbuf.get_height())
subpixbuf.copy_area(0, 0, subpixbuf.get_width(), subpixbuf.get_height(), canvas, dest_x, dest_y)
