def extract_raster_image(wmf_data):
try:
wmf, wmf_err = plugins['wmf']
except KeyError:
raise Unavailable('libwmf not available on this platform')
if wmf_err:
raise Unavailable(wmf_err)
if iswindows:
import sys, os
appdir = sys.app_dir
if isinstance(appdir, unicode):
appdir = appdir.encode(filesystem_encoding)
fdir = os.path.join(appdir, 'wmffonts')
wmf.set_font_dir(fdir)
data = ''
with TemporaryDirectory('wmf2png') as tdir:
with CurrentDir(tdir):
wmf.render(wmf_data)
images = list(sorted(glob.glob('*.png')))
if not images:
raise NoRaster('No raster images in WMF')
data = open(images[0], 'rb').read()
im = Image()
im.load(data)
pw = PixelWand()
pw.color = '#ffffff'
im.rotate(pw, 180)
return im.export('png')
def extract_raster_image(wmf_data):
try:
wmf, wmf_err = plugins['wmf']
except KeyError:
raise Unavailable('libwmf not available on this platform')
if wmf_err:
raise Unavailable(wmf_err)
if iswindows:
import sys, os
appdir = sys.app_dir
if isinstance(appdir, unicode):
appdir = appdir.encode(filesystem_encoding)
fdir = os.path.join(appdir, 'wmffonts')
wmf.set_font_dir(fdir)
data = ''
with TemporaryDirectory('wmf2png') as tdir:
with CurrentDir(tdir):
wmf.render(wmf_data)
images = list(sorted(glob.glob('*.png')))
if not images:
raise NoRaster('No raster images in WMF')
data = open(images[0], 'rb').read()
im = Image()
im.load(data)
pw = PixelWand()
pw.color = '#ffffff'
im.rotate(pw, 180)
return im.export('png')
def process_pages(self):
from calibre.utils.magick import PixelWand
for i, wand in enumerate(self.pages):
pw = PixelWand()
pw.color = '#ffffff'
wand.set_border_color(pw)
if self.rotate:
wand.rotate(pw, -90)
if not self.opts.disable_trim:
wand.trim(25 * 65535 / 100)
wand.set_page(0, 0, 0,
0) # Clear page after trim, like a "+repage"
# Do the Photoshop "Auto Levels" equivalent
if not self.opts.dont_normalize:
wand.normalize()
sizex, sizey = wand.size
SCRWIDTH, SCRHEIGHT = self.opts.output_profile.comic_screen_size
try:
if self.opts.comic_image_size:
SCRWIDTH, SCRHEIGHT = map(int, [
x.strip()
for x in self.opts.comic_image_size.split('x')
])
except:
pass # Ignore
if self.opts.keep_aspect_ratio:
# Preserve the aspect ratio by adding border
aspect = float(sizex) / float(sizey)
if aspect <= (float(SCRWIDTH) / float(SCRHEIGHT)):
newsizey = SCRHEIGHT
newsizex = int(newsizey * aspect)
deltax = (SCRWIDTH - newsizex) / 2
deltay = 0
else:
newsizex = SCRWIDTH
newsizey = int(newsizex / aspect)
deltax = 0
deltay = (SCRHEIGHT - newsizey) / 2
if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
# Too large and resizing fails, so better
# to leave it as original size
wand.size = (newsizex, newsizey)
wand.set_border_color(pw)
wand.add_border(pw, deltax, deltay)
elif self.opts.wide:
# Keep aspect and Use device height as scaled image width so landscape mode is clean
aspect = float(sizex) / float(sizey)
screen_aspect = float(SCRWIDTH) / float(SCRHEIGHT)
# Get dimensions of the landscape mode screen
# Add 25px back to height for the battery bar.
wscreenx = SCRHEIGHT + 25
wscreeny = int(wscreenx / screen_aspect)
if aspect <= screen_aspect:
newsizey = wscreeny
newsizex = int(newsizey * aspect)
deltax = (wscreenx - newsizex) / 2
deltay = 0
else:
newsizex = wscreenx
newsizey = int(newsizex / aspect)
deltax = 0
deltay = (wscreeny - newsizey) / 2
if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
# Too large and resizing fails, so better
# to leave it as original size
wand.size = (newsizex, newsizey)
wand.set_border_color(pw)
wand.add_border(pw, deltax, deltay)
else:
if SCRWIDTH < MAX_SCREEN_SIZE and SCRHEIGHT < MAX_SCREEN_SIZE:
wand.size = (SCRWIDTH, SCRHEIGHT)
if not self.opts.dont_sharpen:
wand.sharpen(0.0, 1.0)
if not self.opts.dont_grayscale:
wand.type = 'GrayscaleType'
if self.opts.despeckle:
wand.despeckle()
wand.quantize(self.opts.colors)
dest = '%d_%d.%s' % (self.num, i, self.opts.output_format)
dest = os.path.join(self.dest, dest)
if dest.lower().endswith('.png'):
dest += '8'
wand.save(dest)
if dest.endswith('8'):
dest = dest[:-1]
os.rename(dest + '8', dest)
self.append(dest)
def process_pages(self):
from calibre.utils.magick import PixelWand
for i, wand in enumerate(self.pages):
pw = PixelWand()
pw.color = '#ffffff'
wand.set_border_color(pw)
if self.rotate:
wand.rotate(pw, -90)
if not self.opts.disable_trim:
wand.trim(25*65535/100)
wand.set_page(0, 0, 0, 0) # Clear page after trim, like a "+repage"
# Do the Photoshop "Auto Levels" equivalent
if not self.opts.dont_normalize:
wand.normalize()
sizex, sizey = wand.size
SCRWIDTH, SCRHEIGHT = self.opts.output_profile.comic_screen_size
try:
if self.opts.comic_image_size:
SCRWIDTH, SCRHEIGHT = map(int, [x.strip() for x in
self.opts.comic_image_size.split('x')])
except:
pass # Ignore
if self.opts.keep_aspect_ratio:
# Preserve the aspect ratio by adding border
aspect = float(sizex) / float(sizey)
if aspect <= (float(SCRWIDTH) / float(SCRHEIGHT)):
newsizey = SCRHEIGHT
newsizex = int(newsizey * aspect)
deltax = (SCRWIDTH - newsizex) / 2
deltay = 0
else:
newsizex = SCRWIDTH
newsizey = int(newsizex / aspect)
deltax = 0
deltay = (SCRHEIGHT - newsizey) / 2
if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
# Too large and resizing fails, so better
# to leave it as original size
wand.size = (newsizex, newsizey)
wand.set_border_color(pw)
wand.add_border(pw, deltax, deltay)
elif self.opts.wide:
# Keep aspect and Use device height as scaled image width so landscape mode is clean
aspect = float(sizex) / float(sizey)
screen_aspect = float(SCRWIDTH) / float(SCRHEIGHT)
# Get dimensions of the landscape mode screen
# Add 25px back to height for the battery bar.
wscreenx = SCRHEIGHT + 25
wscreeny = int(wscreenx / screen_aspect)
if aspect <= screen_aspect:
newsizey = wscreeny
newsizex = int(newsizey * aspect)
deltax = (wscreenx - newsizex) / 2
deltay = 0
else:
newsizex = wscreenx
newsizey = int(newsizex / aspect)
deltax = 0
deltay = (wscreeny - newsizey) / 2
if newsizex < MAX_SCREEN_SIZE and newsizey < MAX_SCREEN_SIZE:
# Too large and resizing fails, so better
# to leave it as original size
wand.size = (newsizex, newsizey)
wand.set_border_color(pw)
wand.add_border(pw, deltax, deltay)
else:
if SCRWIDTH < MAX_SCREEN_SIZE and SCRHEIGHT < MAX_SCREEN_SIZE:
wand.size = (SCRWIDTH, SCRHEIGHT)
if not self.opts.dont_sharpen:
wand.sharpen(0.0, 1.0)
if not self.opts.dont_grayscale:
wand.type = 'GrayscaleType'
if self.opts.despeckle:
wand.despeckle()
wand.quantize(self.opts.colors)
dest = '%d_%d.%s'%(self.num, i, self.opts.output_format)
dest = os.path.join(self.dest, dest)
if dest.lower().endswith('.png'):
dest += '8'
wand.save(dest)
if dest.endswith('8'):
dest = dest[:-1]
os.rename(dest+'8', dest)
self.append(dest)
