Kill gobject (Replace poppler with pymupdf) #3
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Tested with Python3.8.1
__cmp__ is not respected in Python 3, therefore a TypeError is raised in L215 in read_layers.py when it is attempted to sort the layers. This was fixed by renaming the __cmp__ method to __lt__.
We now use python:3.8.1-buster as baseimage. Without the gobject dependency we can use the latest python version, without running into trouble to not find the gobject bindings for that version. This also allows us, to use the latest version of pymupdf, as the only available wheel for buster default python 3.7.3 was 1.16.6. Now: 1.16.11
cfra
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Feb 28, 2020
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cfra
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Thank you very much for this contribution towards cleaning up the requirements. 🙂
I have tested out this branch and discovered a few shortcomings with it which need to be fixed before it can go in:
- to ensure fonts remain readable, PDFs need to be rendered at the scale applicable for each tile,
just rendering the PDF once and resizing it for other zoom levels is unfortunately not an option - the new renderer doesn't seem to take inverted rendering and scaling/translation into account, at least some test layers which make use of these features yielded highly different results in the new renderer compared to the old renderer
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I removed the gobject dependency. I feel like this removes a lot of pain, as PyMuPDF is self-contained, and we now only have dependencies that are installable via pip.
Now the latest version of Python is used in the Dockerfile (3.8.1-buster).