gtkui: refactor resize_pixbuf_keep_ratio #1107
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Other than that, it LGTM, I just need to test it. |
Other than what? :) Sounds like a review comment was not submitted yet? |
auouymous
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Jul 24, 2021
Do all image size calculation before calling scale_simple, so it only needs to be called once. Add a debug log message, since scaling cover images actually takes some time and it's good to know the target resolution. (On my PinePhone, scaling these cover images delays startup significantly and thumbnails are too small when the program is scaled in the Phosh UI). While at it, return early if no resize is needed so the changed and result variables can be removed. Calling scale_simple twice happens with the previous code, if the height of the source image is greater than max_image_side and greater than the width. In that case, the resulting image has less quality since the second scale_simple already works with a scaled down image and scaling takes twice as long. In practice most podcasts have square artwork so I assume this didn't have much of a practical effect. But I care about the log message and figured this would be the most elegant way to add it.
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Thanks for the patch, it will improve the performance of a feature I'm working on. |
auouymous
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elelay
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Aug 18, 2021
Move scale_pixbuf to util.py and apply #1107 refactoring.
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Do all image size calculation before calling scale_simple, so it only
needs to be called once.
Add a debug log message, since scaling cover images actually takes some
time and it's good to know the target resolution. (On my PinePhone,
scaling these cover images delays startup significantly and thumbnails
are too small when the program is scaled in the Phosh UI).
While at it, return early if no resize is needed so the changed and
result variables can be removed.
Calling scale_simple twice happens with the previous code, if the height
of the source image is greater than max_image_side and greater than the
width. In that case, the resulting image has less quality since the
second scale_simple already works with a scaled down image and scaling
takes twice as long. In practice most podcasts have square artwork so
I assume this didn't have much of a practical effect. But I care about
the log message and figured this would be the most elegant way to add it.