https://bugs.kde.org/show_bug.cgi?id=405684
Bug ID: 405684
Summary: Flatten image with canvas background color gives
non-transparent background in result
Product: krita
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Layer Stack
Assignee: krita-bugs-n...@kde.org
Reporter: tamtamy.tym...@gmail.com
Target Milestone: ---
Created attachment 118935
--> https://bugs.kde.org/attachment.cgi?id=118935&action=edit
Example test file
SUMMARY
Background color is not saved in the image while flattening. This results in a
wrong results if the background color is not purely transparent.
STEPS TO REPRODUCE
1. Open file with opaque background color. Example file attached.
2. Flatten using Layer -> Flatten Image.
OBSERVED RESULT
3a. The result looks the same as expected, however if you hide the only layer,
you'll see transparency grid... which means parts that were transparent before
were changed to the color of the previously selected background color.
4a. If you go to Image -> Properties, you'll see Background color set as black,
0% opacity, no matter what was the previous background color.
EXPECTED RESULT
3b. The result looks the same, but the previously transparent parts are still
transparent; transparency just look like a solid color, according to the
settings chosen in Image -> Properties.
4b. The same color is set in Image -> Properties before and after flattening.
NOTES:
- if you undo flattening while having the new layer visible, the undo will be
correct, including the correct background color. If you however undo flattening
when the layer is hidden, you'll get all of your previous layers correct, but
the background color will be set to transparent.
- if you flatten image with transparent background color, but the value of the
color will be different from black, after flattening the result will be
correct, but the background color will be set to black, 0% opacity.
- test file was taken from bug 405366 , just renamed.
SOFTWARE/OS VERSIONS
Krita
Version: 4.2.0-pre-alpha (git fbba406)
Languages: pl
Hidpi: false
Qt
Version (compiled): 5.11.3
Version (loaded): 5.11.3
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 4.15.0-45-generic
Pretty Productname: Linux Mint 19.1
Product Type: linuxmint
Product Version: 19.1
Hardware Information
GPU Acceleration: auto
Memory: 7771 Mb
Number of Cores: 4
Swap Location: /tmp
ADDITIONAL INFORMATION
Git hash: fbba406b15d7f6b066fd40
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