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Code Issues Projects Releases Wiki Activity

Moved PS script into separate file.

This commit is contained in:
Tomas Groth 2014-01-06 10:51:53 +00:00
parent b242343d59
commit d02377f74f
2 changed files with 14 additions and 19 deletions
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10
openlp/plugins/presentations/lib/ghostscript_get_resolution.ps Normal file
View File

@ -0,0 +1,10 @@
%!PS
() =
File dup (r) file runpdfbegin
1 pdfgetpage dup
/MediaBox pget {
aload pop exch 4 1 roll exch sub 3 1 roll sub
( Size: x: ) print =print (, y: ) print =print (\n) print
} if
flush
quit

23
openlp/plugins/presentations/lib/pdfcontroller.py
View File

@ -187,37 +187,22 @@ class PdfDocument(PresentationDocument):
:return: The resolution dpi to be used.
"""
# Use a postscript script to get size of the pdf. It is assumed that all pages have same size
postscript = '%!PS \n\
() = \n\
File dup (r) file runpdfbegin \n\
1 pdfgetpage dup \n\
/MediaBox pget { \n\
aload pop exch 4 1 roll exch sub 3 1 roll sub \n\
( Size: x: ) print =print (, y: ) print =print (\n) print \n\
} if \n\
flush \n\
quit \n\
'
# Put postscript into tempfile
tmp_file = NamedTemporaryFile(delete=False)
tmp_file.write(postscript)
tmp_file.close()
gs_resolution_script = AppLocation.get_directory(AppLocation.PluginsDir) + '/presentations/lib/ghostscript_get_resolution.ps'
# Run the script on the pdf to get the size
runlog = []
try:
runlog = check_output([self.controller.gsbin, '-dNOPAUSE', '-dNODISPLAY', '-dBATCH',
'-sFile=' + self.filepath, tmp_file.name])
'-sFile=' + self.filepath, gs_resolution_script])
except CalledProcessError as e:
log.debug(' '.join(e.cmd))
log.debug(e.output)
os.unlink(tmp_file.name)
# Extract the pdf resolution from output, the format is " Size: x: <width>, y: <height>"
width = 0
height = 0
for line in runlog.splitlines():
try:
width = re.search('.*Size: x: (\d+\.?\d*), y: \d+.*', line).group(1)
height = re.search('.*Size: x: \d+\.?\d*, y: (\d+\.?\d*).*', line).group(1)
width = int(re.search('.*Size: x: (\d+\.?\d*), y: \d+.*', line.decode()).group(1))
height = int(re.search('.*Size: x: \d+\.?\d*, y: (\d+\.?\d*).*', line.decode()).group(1))
break
except AttributeError:
pass