def rescale(self, qt=True):
from calibre.utils.magick.draw import Image
is_image_collection = getattr(self.opts, 'is_image_collection', False)
if is_image_collection:
page_width, page_height = self.opts.dest.comic_screen_size
else:
page_width, page_height = self.opts.dest.width, self.opts.dest.height
page_width -= (self.opts.margin_left + self.opts.margin_right) * self.opts.dest.dpi/72.
page_height -= (self.opts.margin_top + self.opts.margin_bottom) * self.opts.dest.dpi/72.
for item in self.oeb.manifest:
if item.media_type.startswith('image'):
ext = item.media_type.split('/')[-1].upper()
if ext == 'JPG':
ext = 'JPEG'
if ext not in ('PNG', 'JPEG', 'GIF'):
ext = 'JPEG'
raw = item.data
if hasattr(raw, 'xpath') or not raw:
# Probably an svg image
continue
try:
img = Image()
img.load(raw)
except:
continue
width, height = img.size
try:
if self.check_colorspaces and img.colorspace == 'CMYKColorspace':
# We cannot do an automatic conversion of CMYK to RGB as
# ImageMagick inverts colors if you just set the colorspace
# to rgb. See for example: https://bugs.launchpad.net/bugs/1246710
self.log.warn(
'The image %s is in the CMYK colorspace, you should convert'
' it to sRGB as Adobe Digital Editions cannot render CMYK' % item.href)
except Exception:
pass
scaled, new_width, new_height = fit_image(width, height,
page_width, page_height)
if scaled:
new_width = max(1, new_width)
new_height = max(1, new_height)
self.log('Rescaling image from %dx%d to %dx%d'%(
width, height, new_width, new_height), item.href)
try:
img.size = (new_width, new_height)
data = img.export(ext.lower())
except KeyboardInterrupt:
raise
except:
self.log.exception('Failed to rescale image')
else:
item.data = data
item.unload_data_from_memory()
def icon(ctx, rd, which):
sz = rd.query.get('sz')
if sz != 'full':
try:
sz = int(rd.query.get('sz', 48))
except Exception:
sz = 48
if which in {'', '_'}:
raise HTTPNotFound()
if which.startswith('_'):
base = os.path.join(config_dir, 'tb_icons')
path = os.path.abspath(os.path.join(base, *which[1:].split('/')))
if not path.startswith(base) or ':' in which:
raise HTTPNotFound('Naughty, naughty!')
else:
base = P('images', allow_user_override=False)
path = os.path.abspath(os.path.join(base, *which.split('/')))
if not path.startswith(base) or ':' in which:
raise HTTPNotFound('Naughty, naughty!')
path = os.path.relpath(path, base).replace(os.sep, '/')
path = P('images/' + path)
if sz == 'full':
try:
return share_open(path, 'rb')
except EnvironmentError:
raise HTTPNotFound()
with lock:
tdir = os.path.join(rd.tdir, 'icons')
cached = os.path.join(tdir, '%d-%s.png' % (sz, which))
try:
return share_open(cached, 'rb')
except EnvironmentError:
pass
try:
src = share_open(path, 'rb')
except EnvironmentError:
raise HTTPNotFound()
with src:
img = Image()
img.load(src.read())
width, height = img.size
scaled, width, height = fit_image(width, height, sz, sz)
if scaled:
img.size = (width, height)
try:
ans = share_open(cached, 'w+b')
except EnvironmentError:
try:
os.mkdir(tdir)
except EnvironmentError:
pass
ans = share_open(cached, 'w+b')
ans.write(img.export('png'))
ans.seek(0)
return ans
def icon(ctx, rd, which):
sz = rd.query.get("sz")
if sz != "full":
try:
sz = int(rd.query.get("sz", 48))
except Exception:
sz = 48
if which in {"", "_"}:
raise HTTPNotFound()
if which.startswith("_"):
base = os.path.join(config_dir, "tb_icons")
path = os.path.abspath(os.path.join(base, *which[1:].split("/")))
if not path.startswith(base) or ":" in which:
raise HTTPNotFound("Naughty, naughty!")
else:
base = P("images", allow_user_override=False)
path = os.path.abspath(os.path.join(base, *which.split("/")))
if not path.startswith(base) or ":" in which:
raise HTTPNotFound("Naughty, naughty!")
path = os.path.relpath(path, base).replace(os.sep, "/")
path = P("images/" + path)
if sz == "full":
try:
return share_open(path, "rb")
except EnvironmentError:
raise HTTPNotFound()
with lock:
tdir = os.path.join(rd.tdir, "icons")
cached = os.path.join(tdir, "%d-%s.png" % (sz, which))
try:
return share_open(cached, "rb")
except EnvironmentError:
pass
try:
src = share_open(path, "rb")
except EnvironmentError:
raise HTTPNotFound()
with src:
img = Image()
img.load(src.read())
width, height = img.size
scaled, width, height = fit_image(width, height, sz, sz)
if scaled:
img.size = (width, height)
try:
ans = share_open(cached, "w+b")
except EnvironmentError:
try:
os.mkdir(tdir)
except EnvironmentError:
pass
ans = share_open(cached, "w+b")
ans.write(img.export("png"))
ans.seek(0)
return ans
def icon(ctx, rd, which):
sz = rd.query.get('sz')
if sz != 'full':
try:
sz = int(rd.query.get('sz', 48))
except Exception:
sz = 48
if which in {'', '_'}:
raise HTTPNotFound()
if which.startswith('_'):
base = os.path.join(config_dir, 'tb_icons')
path = os.path.abspath(os.path.join(base, *which[1:].split('/')))
if not path.startswith(base) or ':' in which:
raise HTTPNotFound('Naughty, naughty!')
else:
base = P('images', allow_user_override=False)
path = os.path.abspath(os.path.join(base, *which.split('/')))
if not path.startswith(base) or ':' in which:
raise HTTPNotFound('Naughty, naughty!')
path = os.path.relpath(path, base).replace(os.sep, '/')
path = P('images/' + path)
if sz == 'full':
try:
return lopen(path, 'rb')
except EnvironmentError:
raise HTTPNotFound()
tdir = os.path.join(rd.tdir, 'icons')
cached = os.path.join(tdir, '%d-%s.png' % (sz, which))
try:
return lopen(cached, 'rb')
except EnvironmentError:
pass
try:
src = lopen(path, 'rb')
except EnvironmentError:
raise HTTPNotFound()
with src:
img = Image()
img.load(src.read())
width, height = img.size
scaled, width, height = fit_image(width, height, sz, sz)
if scaled:
img.size = (width, height)
try:
ans = lopen(cached, 'w+b')
except EnvironmentError:
try:
os.mkdir(tdir)
except EnvironmentError:
pass
ans = lopen(cached, 'w+b')
ans.write(img.export('png'))
ans.seek(0)
return ans
def rescale(self, qt=True):
from calibre.utils.magick.draw import Image
is_image_collection = getattr(self.opts, 'is_image_collection', False)
if is_image_collection:
page_width, page_height = self.opts.dest.comic_screen_size
else:
page_width, page_height = self.opts.dest.width, self.opts.dest.height
page_width -= (self.opts.margin_left +
self.opts.margin_right) * self.opts.dest.dpi / 72.
page_height -= (self.opts.margin_top +
self.opts.margin_bottom) * self.opts.dest.dpi / 72.
for item in self.oeb.manifest:
if item.media_type.startswith('image'):
ext = item.media_type.split('/')[-1].upper()
if ext == 'JPG': ext = 'JPEG'
if ext not in ('PNG', 'JPEG', 'GIF'):
ext = 'JPEG'
raw = item.data
if hasattr(raw, 'xpath') or not raw:
# Probably an svg image
continue
try:
img = Image()
img.load(raw)
except:
continue
width, height = img.size
scaled, new_width, new_height = fit_image(
width, height, page_width, page_height)
if scaled:
new_width = max(1, new_width)
new_height = max(1, new_height)
self.log(
'Rescaling image from %dx%d to %dx%d' %
(width, height, new_width, new_height), item.href)
try:
img.size = (new_width, new_height)
data = img.export(ext.lower())
except KeyboardInterrupt:
raise
except:
self.log.exception('Failed to rescale image')
else:
item.data = data
item.unload_data_from_memory()
def rescale_image(data, maxsizeb=IMAGE_MAX_SIZE, dimen=None):
'''
Convert image setting all transparent pixels to white and changing format
to JPEG. Ensure the resultant image has a byte size less than
maxsizeb.
If dimen is not None, generate a thumbnail of
width=dimen, height=dimen or width, height = dimen (depending on the type
of dimen)
Returns the image as a bytestring
'''
if dimen is not None:
if hasattr(dimen, '__len__'):
width, height = dimen
else:
width = height = dimen
data = thumbnail(data,
width=width,
height=height,
compression_quality=90)[-1]
else:
# Replace transparent pixels with white pixels and convert to JPEG
data = save_cover_data_to(data, 'img.jpg', return_data=True)
if len(data) <= maxsizeb:
return data
orig_data = data
img = Image()
quality = 95
img.load(data)
while len(data) >= maxsizeb and quality >= 10:
quality -= 5
img.set_compression_quality(quality)
data = img.export('jpg')
if len(data) <= maxsizeb:
return data
orig_data = data
scale = 0.9
while len(data) >= maxsizeb and scale >= 0.05:
img = Image()
img.load(orig_data)
w, h = img.size
img.size = (int(scale * w), int(scale * h))
img.set_compression_quality(quality)
data = img.export('jpg')
scale -= 0.05
return data
def rescale(self, qt=True):
from calibre.utils.magick.draw import Image
is_image_collection = getattr(self.opts, 'is_image_collection', False)
if is_image_collection:
page_width, page_height = self.opts.dest.comic_screen_size
else:
page_width, page_height = self.opts.dest.width, self.opts.dest.height
page_width -= (self.opts.margin_left + self.opts.margin_right) * self.opts.dest.dpi/72.
page_height -= (self.opts.margin_top + self.opts.margin_bottom) * self.opts.dest.dpi/72.
for item in self.oeb.manifest:
if item.media_type.startswith('image'):
ext = item.media_type.split('/')[-1].upper()
if ext == 'JPG': ext = 'JPEG'
if ext not in ('PNG', 'JPEG', 'GIF'):
ext = 'JPEG'
raw = item.data
if hasattr(raw, 'xpath') or not raw:
# Probably an svg image
continue
try:
img = Image()
img.load(raw)
except:
continue
width, height = img.size
scaled, new_width, new_height = fit_image(width, height,
page_width, page_height)
if scaled:
new_width = max(1, new_width)
new_height = max(1, new_height)
self.log('Rescaling image from %dx%d to %dx%d'%(
width, height, new_width, new_height), item.href)
try:
img.size = (new_width, new_height)
data = img.export(ext.lower())
except KeyboardInterrupt:
raise
except:
self.log.exception('Failed to rescale image')
else:
item.data = data
item.unload_data_from_memory()
def rescale_image(data, maxsizeb=IMAGE_MAX_SIZE, dimen=None):
'''
Convert image setting all transparent pixels to white and changing format
to JPEG. Ensure the resultant image has a byte size less than
maxsizeb.
If dimen is not None, generate a thumbnail of
width=dimen, height=dimen or width, height = dimen (depending on the type
of dimen)
Returns the image as a bytestring
'''
if dimen is not None:
if hasattr(dimen, '__len__'):
width, height = dimen
else:
width = height = dimen
data = thumbnail(data, width=width, height=height,
compression_quality=90)[-1]
else:
# Replace transparent pixels with white pixels and convert to JPEG
data = save_cover_data_to(data, 'img.jpg', return_data=True)
if len(data) <= maxsizeb:
return data
orig_data = data
img = Image()
quality = 95
img.load(data)
while len(data) >= maxsizeb and quality >= 10:
quality -= 5
img.set_compression_quality(quality)
data = img.export('jpg')
if len(data) <= maxsizeb:
return data
orig_data = data
scale = 0.9
while len(data) >= maxsizeb and scale >= 0.05:
img = Image()
img.load(orig_data)
w, h = img.size
img.size = (int(scale*w), int(scale*h))
img.set_compression_quality(quality)
data = img.export('jpg')
scale -= 0.05
return data
def rescale(self, qt=True):
from calibre.utils.magick.draw import Image
is_image_collection = getattr(self.opts, 'is_image_collection', False)
if is_image_collection:
page_width, page_height = self.opts.dest.comic_screen_size
else:
page_width, page_height = self.opts.dest.width, self.opts.dest.height
page_width -= (self.opts.margin_left + self.opts.margin_right) * self.opts.dest.dpi/72.
page_height -= (self.opts.margin_top + self.opts.margin_bottom) * self.opts.dest.dpi/72.
for item in self.oeb.manifest:
if item.media_type.startswith('image'):
ext = item.media_type.split('/')[-1].upper()
if ext == 'JPG':
ext = 'JPEG'
if ext not in ('PNG', 'JPEG', 'GIF'):
ext = 'JPEG'
raw = item.data
if hasattr(raw, 'xpath') or not raw:
# Probably an svg image
continue
try:
img = Image()
img.load(raw)
except:
continue
width, height = img.size
try:
if self.check_colorspaces and img.colorspace == 'CMYKColorspace':
# We cannot do an imagemagick conversion of CMYK to RGB as
# ImageMagick inverts colors if you just set the colorspace
# to rgb. See for example: https://bugs.launchpad.net/bugs/1246710
from PyQt4.Qt import QImage
from calibre.gui2 import pixmap_to_data
qimg = QImage()
qimg.loadFromData(raw)
if not qimg.isNull():
raw = item.data = pixmap_to_data(qimg, format=ext, quality=95)
img = Image()
img.load(raw)
self.log.warn(
'The image %s is in the CMYK colorspace, converting it '
'to RGB as Adobe Digital Editions cannot display CMYK' % item.href)
else:
self.log.warn(
'The image %s is in the CMYK colorspace, you should convert'
' it to sRGB as Adobe Digital Editions cannot render CMYK' % item.href)
except Exception:
pass
scaled, new_width, new_height = fit_image(width, height,
page_width, page_height)
if scaled:
new_width = max(1, new_width)
new_height = max(1, new_height)
self.log('Rescaling image from %dx%d to %dx%d'%(
width, height, new_width, new_height), item.href)
try:
img.size = (new_width, new_height)
data = img.export(ext.lower())
except KeyboardInterrupt:
raise
except:
self.log.exception('Failed to rescale image')
else:
item.data = data
item.unload_data_from_memory()
def rescale(self):
from calibre.utils.magick.draw import Image
is_image_collection = getattr(self.opts, "is_image_collection", False)
if is_image_collection:
page_width, page_height = self.opts.dest.comic_screen_size
else:
page_width, page_height = self.opts.dest.width, self.opts.dest.height
page_width -= (self.opts.margin_left + self.opts.margin_right) * self.opts.dest.dpi / 72.0
page_height -= (self.opts.margin_top + self.opts.margin_bottom) * self.opts.dest.dpi / 72.0
for item in self.oeb.manifest:
if item.media_type.startswith("image"):
ext = item.media_type.split("/")[-1].upper()
if ext == "JPG":
ext = "JPEG"
if ext not in ("PNG", "JPEG", "GIF"):
ext = "JPEG"
raw = item.data
if hasattr(raw, "xpath") or not raw:
# Probably an svg image
continue
try:
img = Image()
img.load(raw)
except:
continue
width, height = img.size
try:
if self.check_colorspaces and img.colorspace == "CMYKColorspace":
# We cannot do an imagemagick conversion of CMYK to RGB as
# ImageMagick inverts colors if you just set the colorspace
# to rgb. See for example: https://bugs.launchpad.net/bugs/1246710
from PyQt5.Qt import QImage
from calibre.gui2 import pixmap_to_data
qimg = QImage()
qimg.loadFromData(raw)
if not qimg.isNull():
raw = item.data = pixmap_to_data(qimg, format=ext, quality=95)
img = Image()
img.load(raw)
self.log.warn(
"The image %s is in the CMYK colorspace, converting it "
"to RGB as Adobe Digital Editions cannot display CMYK" % item.href
)
else:
self.log.warn(
"The image %s is in the CMYK colorspace, you should convert"
" it to sRGB as Adobe Digital Editions cannot render CMYK" % item.href
)
except Exception:
pass
scaled, new_width, new_height = fit_image(width, height, page_width, page_height)
if scaled:
new_width = max(1, new_width)
new_height = max(1, new_height)
self.log("Rescaling image from %dx%d to %dx%d" % (width, height, new_width, new_height), item.href)
try:
img.size = (new_width, new_height)
data = img.export(ext.lower())
except KeyboardInterrupt:
raise
except:
self.log.exception("Failed to rescale image")
else:
item.data = data
item.unload_data_from_memory()