Cyclone-Team/gramps
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image magic: add bmp and tiff + Readme

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SNoiraud 2021-02-09 12:54:44 +01:00 committed by Nick Hall
parent 4cd968daa6
commit ace772812a
2 changed files with 25 additions and 1 deletions
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18
README.md
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@ -120,6 +120,24 @@ The following packages are optional:
Python bindings of fontconfig are required for displaying Python bindings of fontconfig are required for displaying
genealogical symbols genealogical symbols
* **magic**
Python magic bindings required to have better performances with image
processing.
If this module is not available, we continue to use Gdk.
This avoid to load the image in memory. This is a real improvement
when we have many big images.
Used in odfdoc, rtfdoc and webreport and tested with png, gif, jpeg, bmp, tiff
#
# file size with magic without (Gdk) ratio
# example 1 : 256k 0.00080 0.00575 7
# example 2 : 21M 0.00171 0.55860 326
Debian, Ubuntu, ... : python3-magic
Fedora, Redhat, ... : python3-magic
openSUSE : python-magic
ArchLinux : python-magic
Optional packages required by Third-party Addons Optional packages required by Third-party Addons
------------------------------------------------ ------------------------------------------------

8
gramps/gen/utils/image.py
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@ -168,12 +168,18 @@ def image_size(source):
# For performance reasons, we'll try to get image size from magic. # For performance reasons, we'll try to get image size from magic.
# This avoid to load the image in memory. This is a real improvement # This avoid to load the image in memory. This is a real improvement
# when we have many big images. # when we have many big images.
# Used in odfdoc, rtfdoc and webreport and tested with png, gif, jpeg # Used in odfdoc, rtfdoc and webreport and tested with png, gif, jpeg,
# bmp, tiff
# #
# file size with magic without (Gdk) ratio # file size with magic without (Gdk) ratio
# example 1 : 256k 0.00080 0.00575 7 # example 1 : 256k 0.00080 0.00575 7
# example 2 : 21M 0.00171 0.55860 326 # example 2 : 21M 0.00171 0.55860 326
img = magic.from_file(source) img = magic.from_file(source)
found = img.find("TIFF")
if found == 0:
width = re.search('width=(\d+)', img).groups()
height = re.search('height=(\d+)', img).groups()
return (int(width[0]), int(height[0]))
found = img.find("precision") found = img.find("precision")
if found > 0: if found > 0:
img = img[found:] img = img[found:]