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from wand.image import Image as WandImage
from wand.color import Color
import os
# save all pages in a temporary directory to load and plot later
def save_pages(ffout, pages,tmp_dir, # ffout is the modified .tex file
pdffigures_dpi = 72, # default
fac_dpi = 4, # how much larger to make jpeg to avoid any antialiasing
check_exist=False, # , check if exist
save_fmt = 'jpeg',
fac_down_dpi = 1,
beginner='',
return_error = False):
if ffout[-4:] != '.pdf':
pdfout = ffout.replace('.tex','.pdf')
split_ffout = ffout.split('/')[-1].split('.tex')[0]
else:
pdfout = ffout
split_ffout = ffout.split('/')[-1].split('.pdf')[0]
if fac_down_dpi == None:
fac_down_dpi = 1.0/fac_dpi
page_errors = []
for page in pages:
outimgname = tmp_dir+ beginner + \
split_ffout + \
'_p'+str(page) + '.'+save_fmt
# check if it exists
err = False
if (not os.path.exists(outimgname)) or (not check_exist):
try:
wimgPDF = WandImage(filename=pdfout +'[' + str(int(page)) + ']',
resolution=pdffigures_dpi*fac_dpi, format='pdf') #2x DPI which shrinks later
except:
err = True
print('error in DPI')
print(pdfout)
if not err:
thisSeq = wimgPDF.sequence
imPDF = thisSeq[0] # load PDF page into memory
# make sure we do our best to capture accurate text/images
imPDF.resize(width=int(round(fac_down_dpi*imPDF.width)),
height=int(round(fac_down_dpi*imPDF.height)))
imPDF.background_color = Color("white")
imPDF.alpha_channel = 'remove'
#WandImage(imPDF).save(filename=outimgname)
#imPDF.background_color = Color("white")
#imPDF.alpha_channel = 'remove'
imPDFout = WandImage(imPDF)
imPDFout.resolution=int(round(pdffigures_dpi*fac_down_dpi*fac_dpi))
imPDFout.units = 'pixelsperinch'
imPDFout.save(filename=outimgname)
del imPDF
del imPDFout
page_errors.append(err)
if return_error:
return page_errors |