https://bugs.kde.org/show_bug.cgi?id=357312
Bug ID: 357312
Summary: Gwenview 4.14.3 loses PNG DPI information when
rotating images
Product: gwenview
Version: Other (add details in bug description)
Platform: Gentoo Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: gwenview-bugs-n...@kde.org
Reporter: mr.pastafarian...@gmail.com
CC: myr...@kde.org
See the original image at
https://drive.google.com/file/d/0B0Jnpz9ldbuHN29mM3NJdUlWUU0/view?usp=sharing
and the flipped version at
https://drive.google.com/file/d/0B0Jnpz9ldbuHaUdjMkFsV3dncjQ/view?usp=sharing .
Both are PNG images. The first one is scanned. Then I copied it, opened the
copy in Gwenview and rotated it twice, obtaining the second image.
I called `identify -verbose` from Imagemagick on both images. The (abbreviated)
diff between the two calls is below:
1c1
< Image: image_original.png
---
> Image: image_flipped.png
6,7c6,7
< Resolution: 118.11x118.11
< Print size: 21.59x29.7011
---
> Resolution: 31.89x31.5
> Print size: 79.9624x111.365
(...)
80c80
< png:pHYs: x_res=11811, y_res=11811, units=1
---
> png:pHYs: x_res=3189, y_res=3150, units=1
(...)
The metadata has changed. This shouldn't have happened.
Reproducible: Always
Steps to Reproduce:
1. Open the attached image in Gwenview
2. Rotate it twice (to flip it upside-down)
3. Save the rotated copy
4. Call `identify -verbose` on both images
5. Observe the difference
Actual Results:
The metadata has changed.
Expected Results:
Metadata should have stayed the same.
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